├── .circleci
    └── config.yml
├── .dockerignore
├── .editorconfig
├── .github
    ├── dependabot.yml
    └── workflows
    │   ├── codeql-analysis.yml
    │   ├── golangci-lint.yml
    │   └── lint-pull-request.yml
├── .gitignore
├── .golangci.yml
├── .promu.yml
├── .yamllint
├── CHANGELOG.md
├── Dockerfile
├── LICENSE
├── Makefile
├── Makefile.common
├── README.md
├── VERSION
├── cmd
    └── uwsgi_exporter
    │   ├── main.go
    │   ├── main_test.go
    │   └── testdata
    │       └── landing.html.golden
├── go.mod
├── go.sum
├── pkg
    └── collector
    │   ├── dialer_others.go
    │   ├── dialer_windows.go
    │   ├── exporter.go
    │   ├── exporter_test.go
    │   ├── mockserver_test.go
    │   ├── reader.go
    │   ├── reader_file.go
    │   ├── reader_file_test.go
    │   ├── reader_http.go
    │   ├── reader_http_test.go
    │   ├── reader_tcp.go
    │   ├── reader_tcp_test.go
    │   ├── reader_test.go
    │   ├── reader_unix.go
    │   ├── reader_unix_test.go
    │   ├── stats.go
    │   └── testdata
    │       ├── sample.json
    │       └── wrong.json
└── scripts
    └── errcheck_excludes.txt


/.circleci/config.yml:
--------------------------------------------------------------------------------
 1 | version: 2.1
 2 | 
 3 | orbs:
 4 |   prometheus: prometheus/prometheus@0.17.1
 5 |   go: circleci/go@1.7.0
 6 | 
 7 | executors:
 8 |   # Whenever the Go version is updated here, .promu.yml should also be updated.
 9 |   golang:
10 |     docker:
11 |       - image: cimg/go:1.20
12 | 
13 | jobs:
14 |   test:
15 |     executor: golang
16 |     steps:
17 |       - prometheus/setup_environment
18 |       - go/load-cache
19 |       - run:
20 |           command: make
21 |           environment:
22 |             # By default, Go uses GOMAXPROCS but a Circle CI executor has many
23 |             # cores (> 30) while the CPU and RAM resources are throttled. If we
24 |             # don't limit this to the number of allocated cores, the job is
25 |             # likely to get OOMed and killed.
26 |             GOOPTS: "-p 2"
27 |             GOMAXPROCS: "2"
28 |       - run: git diff --exit-code
29 |       - go/save-cache:
30 |           path: /go/pkg/mod
31 | 
32 | workflows:
33 |   version: 2
34 |   uwsgi_exporter:
35 |     jobs:
36 |       - test:
37 |           filters:
38 |             tags:
39 |               only: /.*/
40 |       - prometheus/build:
41 |           name: build
42 |           parallelism: 3
43 |           filters:
44 |             tags:
45 |               only: /^v[0-9]+(\.[0-9]+){2}(-.+|[^-.]*)$/
46 |       - prometheus/publish_master:
47 |           context: timonwong-context
48 |           requires:
49 |             - test
50 |             - build
51 |           filters:
52 |             branches:
53 |               only: master
54 |           quay_io_organization: ''
55 |           docker_hub_organization: timonwong
56 |       - prometheus/publish_release:
57 |           context: timonwong-context
58 |           requires:
59 |             - test
60 |             - build
61 |           filters:
62 |             tags:
63 |               only: /^v[0-9]+(\.[0-9]+){2}(-.+|[^-.]*)$/
64 |             branches:
65 |               ignore: /.*/
66 |           quay_io_organization: ''
67 |           docker_hub_organization: timonwong
68 | 


--------------------------------------------------------------------------------
/.dockerignore:
--------------------------------------------------------------------------------
1 | .build/
2 | .tarballs/
3 | 
4 | !.build/linux-amd64/
5 | !.build/linux-armv7/
6 | !.build/linux-arm64/
7 | !.build/linux-ppc64le/
8 | !.build/linux-s390x/
9 | 


--------------------------------------------------------------------------------
/.editorconfig:
--------------------------------------------------------------------------------
 1 | root = true
 2 | 
 3 | ###########################################################
 4 | ; common
 5 | ###########################################################
 6 | 
 7 | [*]
 8 | charset = utf-8
 9 | 
10 | end_of_line = LF
11 | insert_final_newline = true
12 | trim_trailing_whitespace = true
13 | 
14 | indent_style = space
15 | indent_size = 4
16 | 
17 | [Makefile]
18 | indent_style = tab
19 | 
20 | [Makefile.common]
21 | indent_style = tab
22 | 
23 | [*.{yml,yaml}]
24 | indent_size = 2
25 | 
26 | [*.go]
27 | indent_style = tab
28 | 
29 | [*.golden]
30 | trim_trailing_whitespace = false
31 | insert_final_newline = false
32 | 
33 | [VERSION]
34 | insert_final_newline = false
35 | 


--------------------------------------------------------------------------------
/.github/dependabot.yml:
--------------------------------------------------------------------------------
1 | version: 2
2 | updates:
3 |   - package-ecosystem: "gomod"
4 |     directory: "/"
5 |     schedule:
6 |       interval: "weekly"
7 | 


--------------------------------------------------------------------------------
/.github/workflows/codeql-analysis.yml:
--------------------------------------------------------------------------------
 1 | # For most projects, this workflow file will not need changing; you simply need
 2 | # to commit it to your repository.
 3 | #
 4 | # You may wish to alter this file to override the set of languages analyzed,
 5 | # or to provide custom queries or build logic.
 6 | #
 7 | # ******** NOTE ********
 8 | # We have attempted to detect the languages in your repository. Please check
 9 | # the `language` matrix defined below to confirm you have the correct set of
10 | # supported CodeQL languages.
11 | #
12 | name: "CodeQL"
13 | 
14 | on:
15 |   push:
16 |     branches: [ "master" ]
17 |   pull_request:
18 |     # The branches below must be a subset of the branches above
19 |     branches: [ "master" ]
20 |   schedule:
21 |     - cron: '31 17 * * 5'
22 | 
23 | jobs:
24 |   analyze:
25 |     name: Analyze
26 |     runs-on: ubuntu-latest
27 |     permissions:
28 |       actions: read
29 |       contents: read
30 |       security-events: write
31 | 
32 |     strategy:
33 |       fail-fast: false
34 |       matrix:
35 |         language: [ 'go' ]
36 |         # CodeQL supports [ 'cpp', 'csharp', 'go', 'java', 'javascript', 'python', 'ruby' ]
37 |         # Learn more about CodeQL language support at https://aka.ms/codeql-docs/language-support
38 | 
39 |     steps:
40 |     - name: Checkout repository
41 |       uses: actions/checkout@v3
42 | 
43 |     # Initializes the CodeQL tools for scanning.
44 |     - name: Initialize CodeQL
45 |       uses: github/codeql-action/init@v2
46 |       with:
47 |         languages: ${{ matrix.language }}
48 |         # If you wish to specify custom queries, you can do so here or in a config file.
49 |         # By default, queries listed here will override any specified in a config file.
50 |         # Prefix the list here with "+" to use these queries and those in the config file.
51 |         
52 |         # Details on CodeQL's query packs refer to : https://docs.github.com/en/code-security/code-scanning/automatically-scanning-your-code-for-vulnerabilities-and-errors/configuring-code-scanning#using-queries-in-ql-packs
53 |         # queries: security-extended,security-and-quality
54 | 
55 |         
56 |     # Autobuild attempts to build any compiled languages  (C/C++, C#, or Java).
57 |     # If this step fails, then you should remove it and run the build manually (see below)
58 |     - name: Autobuild
59 |       uses: github/codeql-action/autobuild@v2
60 | 
61 |     # ℹ️ Command-line programs to run using the OS shell.
62 |     # 📚 See https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#jobsjob_idstepsrun
63 | 
64 |     #   If the Autobuild fails above, remove it and uncomment the following three lines. 
65 |     #   modify them (or add more) to build your code if your project, please refer to the EXAMPLE below for guidance.
66 | 
67 |     # - run: |
68 |     #   echo "Run, Build Application using script"
69 |     #   ./location_of_script_within_repo/buildscript.sh
70 | 
71 |     - name: Perform CodeQL Analysis
72 |       uses: github/codeql-action/analyze@v2
73 | 


--------------------------------------------------------------------------------
/.github/workflows/golangci-lint.yml:
--------------------------------------------------------------------------------
 1 | name: golangci-lint
 2 | on:
 3 |   push:
 4 |     paths:
 5 |       - "go.sum"
 6 |       - "go.mod"
 7 |       - "**.go"
 8 |       - "scripts/errcheck_excludes.txt"
 9 |       - ".github/workflows/golangci-lint.yml"
10 |       - ".golangci.yml"
11 |   pull_request:
12 | 
13 | jobs:
14 |   golangci:
15 |     name: lint
16 |     runs-on: ubuntu-latest
17 |     steps:
18 |       - name: Checkout repository
19 |         uses: actions/checkout@v3
20 |       - name: install Go
21 |         uses: actions/setup-go@v2
22 |         with:
23 |           go-version: 1.20.x
24 |       - name: Install snmp_exporter/generator dependencies
25 |         run: sudo apt-get update && sudo apt-get -y install libsnmp-dev
26 |         if: github.repository == 'prometheus/snmp_exporter'
27 |       - name: Lint
28 |         uses: golangci/golangci-lint-action@v3.2.0
29 |         with:
30 |           version: v1.52.1
31 | 


--------------------------------------------------------------------------------
/.github/workflows/lint-pull-request.yml:
--------------------------------------------------------------------------------
 1 | name: Lint Pull Request
 2 | 
 3 | on:
 4 |   pull_request_target:
 5 |     types:
 6 |       - opened
 7 |       - edited
 8 |       - synchronize
 9 | 
10 | jobs:
11 |   lint-pr-title:
12 |     name: Lint PR Title
13 |     runs-on: ubuntu-latest
14 |     steps:
15 |       - uses: amannn/action-semantic-pull-request@v4
16 |         name: Semantic Pull Request
17 |         env:
18 |           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
19 | 


--------------------------------------------------------------------------------
/.gitignore:
--------------------------------------------------------------------------------
 1 | # Compiled Object files, Static and Dynamic libs (Shared Objects)
 2 | *.o
 3 | *.a
 4 | *.so
 5 | 
 6 | # Folders
 7 | _obj
 8 | _test
 9 | 
10 | # Architecture specific extensions/prefixes
11 | *.[568vq]
12 | [568vq].out
13 | 
14 | *.cgo1.go
15 | *.cgo2.c
16 | _cgo_defun.c
17 | _cgo_gotypes.go
18 | _cgo_export.*
19 | 
20 | _testmain.go
21 | 
22 | *.exe
23 | dependencies-stamp
24 | /uwsgi_exporter
25 | /.build
26 | /.deps
27 | /.release
28 | /.tarballs
29 | 
30 | coverage.txt
31 | 
32 | # VSCode
33 | /.vscode
34 | 
35 | # Intellij
36 | /.idea
37 | *.iml
38 | 
39 | /vendor
40 | 


--------------------------------------------------------------------------------
/.golangci.yml:
--------------------------------------------------------------------------------
 1 | ---
 2 | run:
 3 |   deadline: 5m
 4 | 
 5 | linters:
 6 |   enable:
 7 |     - depguard
 8 |     - errcheck
 9 |     - gocritic
10 |     - gofumpt
11 |     - goimports
12 |     - gosec
13 |     - loggercheck
14 |     - misspell
15 |     - revive
16 |     - staticcheck
17 |     - stylecheck
18 |     - unused
19 | 
20 | issues:
21 |   max-issues-per-linter: 0
22 |   max-same-issues: 0
23 |   exclude-rules:
24 |     - path: _test.go
25 |       linters:
26 |         - depguard
27 |         - errcheck
28 | 
29 | linters-settings:
30 |   depguard:
31 |     list-type: blacklist
32 |     include-go-root: true
33 |     packages:
34 |       - sync/atomic
35 |     packages-with-error-message:
36 |       - sync/atomic: "Use go.uber.org/atomic instead of sync/atomic"
37 |       - github.com/go-kit/kit/log: "Use github.com/go-kit/log instead of github.com/go-kit/kit/log"
38 |   errcheck:
39 |     exclude: scripts/errcheck_excludes.txt
40 | 


--------------------------------------------------------------------------------
/.promu.yml:
--------------------------------------------------------------------------------
 1 | ---
 2 | repository:
 3 |   path: github.com/timonwong/uwsgi_exporter
 4 | go:
 5 |   version: 1.20
 6 |   cgo: false
 7 | build:
 8 |   binaries:
 9 |     - name: uwsgi_exporter
10 |       path: ./cmd/uwsgi_exporter
11 |   flags: -a -tags 'netgo'
12 |   ldflags: |
13 |     -X github.com/prometheus/common/version.Version={{.Version}}
14 |     -X github.com/prometheus/common/version.Revision={{.Revision}}
15 |     -X github.com/prometheus/common/version.Branch={{.Branch}}
16 |     -X github.com/prometheus/common/version.BuildUser={{user}}@{{host}}
17 |     -X github.com/prometheus/common/version.BuildDate={{date "20060102-15:04:05"}}
18 | tarball:
19 |   files:
20 |     - LICENSE
21 | crossbuild:
22 |   platforms:
23 |     - darwin
24 |     - dragonfly
25 |     - freebsd
26 |     - illumos
27 |     - linux
28 |     - netbsd
29 |     - windows
30 | 


--------------------------------------------------------------------------------
/.yamllint:
--------------------------------------------------------------------------------
 1 | ---
 2 | extends: default
 3 | 
 4 | rules:
 5 |   braces:
 6 |     max-spaces-inside: 1
 7 |     level: error
 8 |   brackets:
 9 |     max-spaces-inside: 1
10 |     level: error
11 |   commas: disable
12 |   comments: disable
13 |   comments-indentation: disable
14 |   document-start: disable
15 |   indentation:
16 |     spaces: consistent
17 |     indent-sequences: consistent
18 |   line-length: disable
19 |   truthy:
20 |     ignore: |
21 |       .github/workflows/*.yml
22 | 


--------------------------------------------------------------------------------
/CHANGELOG.md:
--------------------------------------------------------------------------------
 1 | ## 1.3.0 / 2023-03-23
 2 | 
 3 | ### Major changes
 4 | 
 5 | Now `--stats.timeout` is deprecated and takes no effect. The exporter now honors `X-Prometheus-Scrape-Timeout-Seconds` header
 6 | from Prometheus to determine the timeout. If the header is not set, the exporter will use the default timeout value of 120 seconds.
 7 | 
 8 | ### Changes
 9 | 
10 | * chore: Update readme about web.config file by @timonwong in https://github.com/timonwong/uwsgi_exporter/pull/65
11 | * feat: Add support to multi-targets by @timonwong in https://github.com/timonwong/uwsgi_exporter/pull/66
12 | * docs: add missing changelog by @timonwong in https://github.com/timonwong/uwsgi_exporter/pull/67
13 | * chore: fail scrape if stats reader cannot be created by @timonwong in https://github.com/timonwong/uwsgi_exporter/pull/69
14 | * feat: reduce sockets in TIME-WAIT state by @timonwong in https://github.com/timonwong/uwsgi_exporter/pull/70
15 | 
16 | ## 1.2.0 / 2023-03-22
17 | 
18 | * build(deps): Bump github.com/prometheus/client_golang from 1.12.1 to 1.13.0 by @dependabot in https://github.com/timonwong/uwsgi_exporter/pull/47
19 | * build(deps): Bump github.com/prometheus/common from 0.34.0 to 0.37.0 by @dependabot in https://github.com/timonwong/uwsgi_exporter/pull/46
20 | * chore: bump github.com/prometheus/client_model from 0.2.0 to 0.3.0 by @dependabot in https://github.com/timonwong/uwsgi_exporter/pull/49
21 | * Bump github.com/stretchr/testify from 1.8.0 to 1.8.1 by @dependabot in https://github.com/timonwong/uwsgi_exporter/pull/50
22 | * feat: allow disable timeout by @timonwong in https://github.com/timonwong/uwsgi_exporter/pull/61
23 | * feat: Add support for "idle" and "cheap" status by @timonwong in https://github.com/timonwong/uwsgi_exporter/pull/62
24 | * ci: fix build by @timonwong in https://github.com/timonwong/uwsgi_exporter/pull/63
25 | * chore: Use exporter toolkit by @timonwong in https://github.com/timonwong/uwsgi_exporter/pull/64
26 | 
27 | ## 1.1.0 / 2022-08-11
28 | 
29 | * No other changes, just go version bump.
30 | 
31 | ## 1.0.0 / 2019-12-18
32 | 
33 | *[CHANGE] Change default value `--collect.cores` to `false` #35
34 | 


--------------------------------------------------------------------------------
/Dockerfile:
--------------------------------------------------------------------------------
 1 | ARG ARCH="amd64"
 2 | ARG OS="linux"
 3 | 
 4 | FROM quay.io/prometheus/busybox-${OS}-${ARCH}:latest
 5 | LABEL maintainer="Timon Wong <timon86.wang@gmail.com>"
 6 | 
 7 | ARG ARCH="amd64"
 8 | ARG OS="linux"
 9 | 
10 | COPY .build/${OS}-${ARCH}/uwsgi_exporter /bin/uwsgi_exporter
11 | 
12 | USER        nobody
13 | EXPOSE      9117
14 | ENTRYPOINT  [ "/bin/uwsgi_exporter" ]
15 | 


--------------------------------------------------------------------------------
/LICENSE:
--------------------------------------------------------------------------------
  1 |                                  Apache License
  2 |                            Version 2.0, January 2004
  3 |                         http://www.apache.org/licenses/
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158 |       incidental, or consequential damages of any character arising as a
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161 |       work stoppage, computer failure or malfunction, or any and all
162 |       other commercial damages or losses), even if such Contributor
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164 | 
165 |    9. Accepting Warranty or Additional Liability. While redistributing
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168 |       or other liability obligations and/or rights consistent with this
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173 |       incurred by, or claims asserted against, such Contributor by reason
174 |       of your accepting any such warranty or additional liability.
175 | 
176 |    END OF TERMS AND CONDITIONS
177 | 
178 |    APPENDIX: How to apply the Apache License to your work.
179 | 
180 |       To apply the Apache License to your work, attach the following
181 |       boilerplate notice, with the fields enclosed by brackets "[]"
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183 |       the brackets!)  The text should be enclosed in the appropriate
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185 |       file or class name and description of purpose be included on the
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187 |       identification within third-party archives.
188 | 
189 |    Copyright [yyyy] [name of copyright owner]
190 | 
191 |    Licensed under the Apache License, Version 2.0 (the "License");
192 |    you may not use this file except in compliance with the License.
193 |    You may obtain a copy of the License at
194 | 
195 |        http://www.apache.org/licenses/LICENSE-2.0
196 | 
197 |    Unless required by applicable law or agreed to in writing, software
198 |    distributed under the License is distributed on an "AS IS" BASIS,
199 |    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
200 |    See the License for the specific language governing permissions and
201 |    limitations under the License.
202 | 


--------------------------------------------------------------------------------
/Makefile:
--------------------------------------------------------------------------------
 1 | # Copyright 2015 The Prometheus Authors
 2 | # Licensed under the Apache License, Version 2.0 (the "License");
 3 | # you may not use this file except in compliance with the License.
 4 | # You may obtain a copy of the License at
 5 | #
 6 | # http://www.apache.org/licenses/LICENSE-2.0
 7 | #
 8 | # Unless required by applicable law or agreed to in writing, software
 9 | # distributed under the License is distributed on an "AS IS" BASIS,
10 | # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
11 | # See the License for the specific language governing permissions and
12 | # limitations under the License.
13 | 
14 | # Needs to be defined before including Makefile.common to auto-generate targets
15 | DOCKER_ARCHS ?= amd64 armv7 arm64
16 | DOCKER_REPO ?= timonwong
17 | 
18 | include Makefile.common
19 | 
20 | DOCKER_IMAGE_NAME       ?= uwsgi-exporter
21 | 
22 | STATICCHECK_IGNORE =
23 | 
24 | .PHONY: build
25 | build: common-build
26 | 
27 | .PHONY: test
28 | test: common-test
29 | 


--------------------------------------------------------------------------------
/Makefile.common:
--------------------------------------------------------------------------------
  1 | # Copyright 2018 The Prometheus Authors
  2 | # Licensed under the Apache License, Version 2.0 (the "License");
  3 | # you may not use this file except in compliance with the License.
  4 | # You may obtain a copy of the License at
  5 | #
  6 | # http://www.apache.org/licenses/LICENSE-2.0
  7 | #
  8 | # Unless required by applicable law or agreed to in writing, software
  9 | # distributed under the License is distributed on an "AS IS" BASIS,
 10 | # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 11 | # See the License for the specific language governing permissions and
 12 | # limitations under the License.
 13 | 
 14 | 
 15 | # A common Makefile that includes rules to be reused in different prometheus projects.
 16 | # !!! Open PRs only against the prometheus/prometheus/Makefile.common repository!
 17 | 
 18 | # Example usage :
 19 | # Create the main Makefile in the root project directory.
 20 | # include Makefile.common
 21 | # customTarget:
 22 | # 	@echo ">> Running customTarget"
 23 | #
 24 | 
 25 | # Ensure GOBIN is not set during build so that promu is installed to the correct path
 26 | unexport GOBIN
 27 | 
 28 | GO           ?= go
 29 | GOFMT        ?= $(GO)fmt
 30 | FIRST_GOPATH := $(firstword $(subst :, ,$(shell $(GO) env GOPATH)))
 31 | GOOPTS       ?=
 32 | GOHOSTOS     ?= $(shell $(GO) env GOHOSTOS)
 33 | GOHOSTARCH   ?= $(shell $(GO) env GOHOSTARCH)
 34 | 
 35 | GO_VERSION        ?= $(shell $(GO) version)
 36 | GO_VERSION_NUMBER ?= $(word 3, $(GO_VERSION))
 37 | PRE_GO_111        ?= $(shell echo $(GO_VERSION_NUMBER) | grep -E 'go1\.(10|[0-9])\.')
 38 | 
 39 | PROMU        := $(FIRST_GOPATH)/bin/promu
 40 | pkgs          = ./...
 41 | 
 42 | ifeq (arm, $(GOHOSTARCH))
 43 | 	GOHOSTARM ?= $(shell GOARM= $(GO) env GOARM)
 44 | 	GO_BUILD_PLATFORM ?= $(GOHOSTOS)-$(GOHOSTARCH)v$(GOHOSTARM)
 45 | else
 46 | 	GO_BUILD_PLATFORM ?= $(GOHOSTOS)-$(GOHOSTARCH)
 47 | endif
 48 | 
 49 | GOTEST := $(GO) test
 50 | GOTEST_DIR :=
 51 | ifneq ($(CIRCLE_JOB),)
 52 | ifneq ($(shell which gotestsum),)
 53 | 	GOTEST_DIR := test-results
 54 | 	GOTEST := gotestsum --junitfile $(GOTEST_DIR)/unit-tests.xml --
 55 | endif
 56 | endif
 57 | 
 58 | PROMU_VERSION ?= 0.14.0
 59 | PROMU_URL     := https://github.com/prometheus/promu/releases/download/v$(PROMU_VERSION)/promu-$(PROMU_VERSION).$(GO_BUILD_PLATFORM).tar.gz
 60 | 
 61 | SKIP_GOLANGCI_LINT :=
 62 | GOLANGCI_LINT :=
 63 | GOLANGCI_LINT_OPTS ?=
 64 | GOLANGCI_LINT_VERSION ?= v1.52.1
 65 | # golangci-lint only supports linux, darwin and windows platforms on i386/amd64.
 66 | # windows isn't included here because of the path separator being different.
 67 | ifeq ($(GOHOSTOS),$(filter $(GOHOSTOS),linux darwin))
 68 | 	ifeq ($(GOHOSTARCH),$(filter $(GOHOSTARCH),amd64 i386))
 69 | 		# If we're in CI and there is an Actions file, that means the linter
 70 | 		# is being run in Actions, so we don't need to run it here.
 71 | 		ifneq (,$(SKIP_GOLANGCI_LINT))
 72 | 			GOLANGCI_LINT :=
 73 | 		else ifeq (,$(CIRCLE_JOB))
 74 | 			GOLANGCI_LINT := $(FIRST_GOPATH)/bin/golangci-lint
 75 | 		else ifeq (,$(wildcard .github/workflows/golangci-lint.yml))
 76 | 			GOLANGCI_LINT := $(FIRST_GOPATH)/bin/golangci-lint
 77 | 		endif
 78 | 	endif
 79 | endif
 80 | 
 81 | PREFIX                  ?= $(shell pwd)
 82 | BIN_DIR                 ?= $(shell pwd)
 83 | DOCKER_IMAGE_TAG        ?= $(subst /,-,$(shell git rev-parse --abbrev-ref HEAD))
 84 | DOCKERFILE_PATH         ?= ./Dockerfile
 85 | DOCKERBUILD_CONTEXT     ?= ./
 86 | DOCKER_REPO             ?= prom
 87 | 
 88 | DOCKER_ARCHS            ?= amd64
 89 | 
 90 | BUILD_DOCKER_ARCHS = $(addprefix common-docker-,$(DOCKER_ARCHS))
 91 | PUBLISH_DOCKER_ARCHS = $(addprefix common-docker-publish-,$(DOCKER_ARCHS))
 92 | TAG_DOCKER_ARCHS = $(addprefix common-docker-tag-latest-,$(DOCKER_ARCHS))
 93 | 
 94 | SANITIZED_DOCKER_IMAGE_TAG := $(subst +,-,$(DOCKER_IMAGE_TAG))
 95 | 
 96 | ifeq ($(GOHOSTARCH),amd64)
 97 |         ifeq ($(GOHOSTOS),$(filter $(GOHOSTOS),linux freebsd darwin windows))
 98 |                 # Only supported on amd64
 99 |                 test-flags := -race
100 |         endif
101 | endif
102 | 
103 | # This rule is used to forward a target like "build" to "common-build".  This
104 | # allows a new "build" target to be defined in a Makefile which includes this
105 | # one and override "common-build" without override warnings.
106 | %: common-% ;
107 | 
108 | .PHONY: common-all
109 | common-all: precheck style lint yamllint unused build test
110 | 
111 | .PHONY: common-style
112 | common-style:
113 | 	@echo ">> checking code style"
114 | 	@fmtRes=$$($(GOFMT) -d $$(find . -path ./vendor -prune -o -name '*.go' -print)); \
115 | 	if [ -n "$${fmtRes}" ]; then \
116 | 		echo "gofmt checking failed!"; echo "$${fmtRes}"; echo; \
117 | 		echo "Please ensure you are using $$($(GO) version) for formatting code."; \
118 | 		exit 1; \
119 | 	fi
120 | 
121 | .PHONY: common-check_license
122 | common-check_license:
123 | 	@echo ">> checking license header"
124 | 	@licRes=$$(for file in $$(find . -type f -iname '*.go' ! -path './vendor/*') ; do \
125 |                awk 'NR<=3' $$file | grep -Eq "(Copyright|generated|GENERATED)" || echo $$file; \
126 |        done); \
127 |        if [ -n "$${licRes}" ]; then \
128 |                echo "license header checking failed:"; echo "$${licRes}"; \
129 |                exit 1; \
130 |        fi
131 | 
132 | .PHONY: common-deps
133 | common-deps:
134 | 	@echo ">> getting dependencies"
135 | 	$(GO) mod download
136 | 
137 | .PHONY: update-go-deps
138 | update-go-deps:
139 | 	@echo ">> updating Go dependencies"
140 | 	@for m in $$($(GO) list -mod=readonly -m -f '{{ if and (not .Indirect) (not .Main)}}{{.Path}}{{end}}' all); do \
141 | 		$(GO) get -d $$m; \
142 | 	done
143 | 	$(GO) mod tidy
144 | 
145 | .PHONY: common-test-short
146 | common-test-short: $(GOTEST_DIR)
147 | 	@echo ">> running short tests"
148 | 	$(GOTEST) -short $(GOOPTS) $(pkgs)
149 | 
150 | .PHONY: common-test
151 | common-test: $(GOTEST_DIR)
152 | 	@echo ">> running all tests"
153 | 	$(GOTEST) $(test-flags) $(GOOPTS) $(pkgs)
154 | 
155 | $(GOTEST_DIR):
156 | 	@mkdir -p $@
157 | 
158 | .PHONY: common-format
159 | common-format:
160 | 	@echo ">> formatting code"
161 | 	$(GO) fmt $(pkgs)
162 | 
163 | .PHONY: common-vet
164 | common-vet:
165 | 	@echo ">> vetting code"
166 | 	$(GO) vet $(GOOPTS) $(pkgs)
167 | 
168 | .PHONY: common-lint
169 | common-lint: $(GOLANGCI_LINT)
170 | ifdef GOLANGCI_LINT
171 | 	@echo ">> running golangci-lint"
172 | # 'go list' needs to be executed before staticcheck to prepopulate the modules cache.
173 | # Otherwise staticcheck might fail randomly for some reason not yet explained.
174 | 	$(GO) list -e -compiled -test=true -export=false -deps=true -find=false -tags= -- ./... > /dev/null
175 | 	$(GOLANGCI_LINT) run $(GOLANGCI_LINT_OPTS) $(pkgs)
176 | endif
177 | 
178 | .PHONY: common-yamllint
179 | common-yamllint:
180 | 	@echo ">> running yamllint on all YAML files in the repository"
181 | ifeq (, $(shell which yamllint))
182 | 	@echo "yamllint not installed so skipping"
183 | else
184 | 	yamllint .
185 | endif
186 | 
187 | # For backward-compatibility.
188 | .PHONY: common-staticcheck
189 | common-staticcheck: lint
190 | 
191 | .PHONY: common-unused
192 | common-unused:
193 | 	@echo ">> running check for unused/missing packages in go.mod"
194 | 	$(GO) mod tidy
195 | 	@git diff --exit-code -- go.sum go.mod
196 | 
197 | .PHONY: common-build
198 | common-build: promu
199 | 	@echo ">> building binaries"
200 | 	$(PROMU) build --prefix $(PREFIX) $(PROMU_BINARIES)
201 | 
202 | .PHONY: common-tarball
203 | common-tarball: promu
204 | 	@echo ">> building release tarball"
205 | 	$(PROMU) tarball --prefix $(PREFIX) $(BIN_DIR)
206 | 
207 | .PHONY: common-docker $(BUILD_DOCKER_ARCHS)
208 | common-docker: $(BUILD_DOCKER_ARCHS)
209 | $(BUILD_DOCKER_ARCHS): common-docker-%:
210 | 	docker build -t "$(DOCKER_REPO)/$(DOCKER_IMAGE_NAME)-linux-$*:$(SANITIZED_DOCKER_IMAGE_TAG)" \
211 | 		-f $(DOCKERFILE_PATH) \
212 | 		--build-arg ARCH="$*" \
213 | 		--build-arg OS="linux" \
214 | 		$(DOCKERBUILD_CONTEXT)
215 | 
216 | .PHONY: common-docker-publish $(PUBLISH_DOCKER_ARCHS)
217 | common-docker-publish: $(PUBLISH_DOCKER_ARCHS)
218 | $(PUBLISH_DOCKER_ARCHS): common-docker-publish-%:
219 | 	docker push "$(DOCKER_REPO)/$(DOCKER_IMAGE_NAME)-linux-$*:$(SANITIZED_DOCKER_IMAGE_TAG)"
220 | 
221 | DOCKER_MAJOR_VERSION_TAG = $(firstword $(subst ., ,$(shell cat VERSION)))
222 | .PHONY: common-docker-tag-latest $(TAG_DOCKER_ARCHS)
223 | common-docker-tag-latest: $(TAG_DOCKER_ARCHS)
224 | $(TAG_DOCKER_ARCHS): common-docker-tag-latest-%:
225 | 	docker tag "$(DOCKER_REPO)/$(DOCKER_IMAGE_NAME)-linux-$*:$(SANITIZED_DOCKER_IMAGE_TAG)" "$(DOCKER_REPO)/$(DOCKER_IMAGE_NAME)-linux-$*:latest"
226 | 	docker tag "$(DOCKER_REPO)/$(DOCKER_IMAGE_NAME)-linux-$*:$(SANITIZED_DOCKER_IMAGE_TAG)" "$(DOCKER_REPO)/$(DOCKER_IMAGE_NAME)-linux-$*:v$(DOCKER_MAJOR_VERSION_TAG)"
227 | 
228 | .PHONY: common-docker-manifest
229 | common-docker-manifest:
230 | 	DOCKER_CLI_EXPERIMENTAL=enabled docker manifest create -a "$(DOCKER_REPO)/$(DOCKER_IMAGE_NAME):$(SANITIZED_DOCKER_IMAGE_TAG)" $(foreach ARCH,$(DOCKER_ARCHS),$(DOCKER_REPO)/$(DOCKER_IMAGE_NAME)-linux-$(ARCH):$(SANITIZED_DOCKER_IMAGE_TAG))
231 | 	DOCKER_CLI_EXPERIMENTAL=enabled docker manifest push "$(DOCKER_REPO)/$(DOCKER_IMAGE_NAME):$(SANITIZED_DOCKER_IMAGE_TAG)"
232 | 
233 | .PHONY: promu
234 | promu: $(PROMU)
235 | 
236 | $(PROMU):
237 | 	$(eval PROMU_TMP := $(shell mktemp -d))
238 | 	curl -s -L $(PROMU_URL) | tar -xvzf - -C $(PROMU_TMP)
239 | 	mkdir -p $(FIRST_GOPATH)/bin
240 | 	cp $(PROMU_TMP)/promu-$(PROMU_VERSION).$(GO_BUILD_PLATFORM)/promu $(FIRST_GOPATH)/bin/promu
241 | 	rm -r $(PROMU_TMP)
242 | 
243 | .PHONY: proto
244 | proto:
245 | 	@echo ">> generating code from proto files"
246 | 	@./scripts/genproto.sh
247 | 
248 | ifdef GOLANGCI_LINT
249 | $(GOLANGCI_LINT):
250 | 	mkdir -p $(FIRST_GOPATH)/bin
251 | 	curl -sfL https://raw.githubusercontent.com/golangci/golangci-lint/$(GOLANGCI_LINT_VERSION)/install.sh \
252 | 		| sed -e '/install -d/d' \
253 | 		| sh -s -- -b $(FIRST_GOPATH)/bin $(GOLANGCI_LINT_VERSION)
254 | endif
255 | 
256 | .PHONY: precheck
257 | precheck::
258 | 
259 | define PRECHECK_COMMAND_template =
260 | precheck:: $(1)_precheck
261 | 
262 | PRECHECK_COMMAND_$(1) ?= $(1) $$(strip $$(PRECHECK_OPTIONS_$(1)))
263 | .PHONY: $(1)_precheck
264 | $(1)_precheck:
265 | 	@if ! $$(PRECHECK_COMMAND_$(1)) 1>/dev/null 2>&1; then \
266 | 		echo "Execution of '$$(PRECHECK_COMMAND_$(1))' command failed. Is $(1) installed?"; \
267 | 		exit 1; \
268 | 	fi
269 | endef
270 | 


--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
 1 | # uWSGI Exporter
 2 | 
 3 | [![CircleCI](https://circleci.com/gh/timonwong/uwsgi_exporter/tree/master.svg?style=shield)][circleci]
 4 | [![Docker Pulls](https://img.shields.io/docker/pulls/timonwong/uwsgi-exporter.svg?maxAge=604800)][hub]
 5 | [![Go Report Card](https://goreportcard.com/badge/github.com/timonwong/uwsgi_exporter)](https://goreportcard.com/report/github.com/timonwong/uwsgi_exporter)
 6 | 
 7 | Prometheus exporter for [uWSGI] metrics.
 8 | 
 9 | ## Building and running
10 | 
11 | ### Build
12 | 
13 | ```bash
14 | make
15 | ```
16 | 
17 | ### Running
18 | 
19 | #### Single exporter mode
20 | 
21 | ```bash
22 | ./uwsgi_exporter <flags>
23 | ```
24 | 
25 | #### Multi-target support (BETA)
26 | 
27 | This exporter supports the [multi-target pattern](https://prometheus.io/docs/guides/multi-target-exporter/). This allows running a single instance of this exporter for multiple uWSGI targets.
28 | 
29 | To use the multi-target functionality, send an http request to the endpoint /probe?target=http://uwsgi1.example.com:5432 where target is set to the URI of the uWSGI instance to scrape metrics from.
30 | 
31 | On the prometheus side you can set a scrape config as follows
32 | 
33 | Please note that only `http`, `https`, and `tcp` targets are supported (`file` and `unix` targets are disabled for security reasons).
34 | 
35 | ```yaml
36 | scrape_configs:
37 |   - job_name: uwsgi # To get metrics about the mysql exporter’s targets
38 |     static_configs:
39 |       - targets:
40 |         # All uwsgi hostnames to monitor.
41 |         - http://uwsgi1.example.com:5432
42 |         - http://uwsgi2.example.com:5432
43 |     relabel_configs:
44 |       - source_labels: [__address__]
45 |         target_label: __param_target
46 |       - source_labels: [__param_target]
47 |         target_label: instance
48 |       - target_label: __address__
49 |         # The uwsgi_exporter host:port
50 |         replacement: localhost:9117
51 | ```
52 | 
53 | ### Flags
54 | 
55 | | Name               | Description                                                                                                                                             |
56 | |--------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------|
57 | | stats.uri          | **required** URI for accessing uwsgi stats (currently supports: "http", "https", "unix", "tcp").                                                        |
58 | | stats.timeout      | Timeout for trying to get stats from uwsgi. (deprecated)                                                                                                |
59 | | timeout-offset     | Offset to subtract from timeout in seconds. (default 0.25)                                                                                              |
60 | | collect.cores      | Whether to collect cores information per uwsgi worker. **WARNING** may cause tremendous resource utilization when using gevent engine. (default: false) |
61 | | log.level          | Logging verbosity. (default: info)                                                                                                                      |
62 | | web.config.file    | Path to a [web configuration file](#tls-and-basic-authentication)                                                                                       |
63 | | web.listen-address | Address to listen on for web interface and telemetry. (default: ":9117")                                                                                |
64 | | web.telemetry-path | Path under which to expose metrics.                                                                                                                     |
65 | | version            | Print the version information.                                                                                                                          |
66 | 
67 | ## TLS and basic authentication
68 | 
69 | The uWSGI Exporter supports TLS and basic authentication.
70 | 
71 | To use TLS and/or basic authentication, you need to pass a configuration file
72 | using the `--web.config.file` parameter. The format of the file is described
73 | [in the exporter-toolkit repository](https://github.com/prometheus/exporter-toolkit/blob/master/docs/web-configuration.md).
74 | 
75 | ## Using Docker
76 | 
77 | You can deploy this exporter using the Docker image from following registry:
78 | 
79 | - [DockerHub]\: [timonwong/uwsgi-exporter](https://registry.hub.docker.com/u/timonwong/uwsgi-exporter/)
80 | 
81 | For example:
82 | 
83 | ```bash
84 | docker pull timonwong/uwsgi-exporter
85 | 
86 | docker run -d -p 9117:9117 timonwong/uwsgi-exporter --stats.uri localhost:8001
87 | ```
88 | 
89 | (uWSGI Stats Server port, 8001 in this example, is configured in `ini` uWSGI configuration files)
90 | 
91 | [uwsgi]: https://uwsgi-docs.readthedocs.io
92 | [circleci]: https://circleci.com/gh/timonwong/uwsgi_exporter
93 | [hub]: https://hub.docker.com/r/timonwong/uwsgi-exporter/
94 | [travis]: https://travis-ci.org/timonwong/uwsgi_exporter
95 | [dockerhub]: https://hub.docker.com
96 | 


--------------------------------------------------------------------------------
/VERSION:
--------------------------------------------------------------------------------
1 | 1.3.0
2 | 


--------------------------------------------------------------------------------
/cmd/uwsgi_exporter/main.go:
--------------------------------------------------------------------------------
  1 | package main
  2 | 
  3 | import (
  4 | 	"context"
  5 | 	"fmt"
  6 | 	"io"
  7 | 	"net/http"
  8 | 	_ "net/http/pprof" //#nosec
  9 | 	"os"
 10 | 	"strconv"
 11 | 	"time"
 12 | 
 13 | 	"github.com/alecthomas/kingpin/v2"
 14 | 	"github.com/go-kit/log"
 15 | 	"github.com/go-kit/log/level"
 16 | 	"github.com/prometheus/client_golang/prometheus"
 17 | 	"github.com/prometheus/client_golang/prometheus/promhttp"
 18 | 	"github.com/prometheus/common/promlog"
 19 | 	"github.com/prometheus/common/promlog/flag"
 20 | 	"github.com/prometheus/common/version"
 21 | 	"github.com/prometheus/exporter-toolkit/web"
 22 | 	webflag "github.com/prometheus/exporter-toolkit/web/kingpinflag"
 23 | 
 24 | 	"github.com/timonwong/uwsgi_exporter/pkg/collector"
 25 | )
 26 | 
 27 | var (
 28 | 	metricsPath   = kingpin.Flag("web.telemetry-path", "Path under which to expose metrics.").Default("/metrics").String()
 29 | 	statsURI      = kingpin.Flag("stats.uri", "URI for accessing uwsgi stats.").Default("").String()
 30 | 	timeoutOffset = kingpin.Flag("timeout-offset", "Offset to subtract from timeout in seconds.").Default("0.25").Float64()
 31 | 	_             = kingpin.Flag("stats.timeout", "Timeout for trying to get stats from uwsgi (deprecated).").Duration()
 32 | 	collectCores  = kingpin.Flag("collect.cores", "Collect cores information per uwsgi worker.").Default("false").Bool()
 33 | 	webConfig     = webflag.AddFlags(kingpin.CommandLine, ":9117")
 34 | )
 35 | 
 36 | func init() {
 37 | 	prometheus.MustRegister(version.NewCollector("uwsgi_exporter"))
 38 | }
 39 | 
 40 | func main() {
 41 | 	promlogConfig := &promlog.Config{}
 42 | 	flag.AddFlags(kingpin.CommandLine, promlogConfig)
 43 | 
 44 | 	kingpin.Version(version.Print("uwsgi_exporter"))
 45 | 	kingpin.HelpFlag.Short('h')
 46 | 	kingpin.Parse()
 47 | 
 48 | 	logger := promlog.New(promlogConfig)
 49 | 	level.Info(logger).Log("msg", "Starting uwsgi_exporter", "version", version.Info())
 50 | 	level.Info(logger).Log("msg", "Build context", "build", version.BuildContext())
 51 | 
 52 | 	handlerFunc := newHandler(collector.NewMetrics(), logger)
 53 | 	http.Handle(*metricsPath, promhttp.InstrumentMetricHandler(prometheus.DefaultRegisterer, handlerFunc))
 54 | 	if *metricsPath != "/" && *metricsPath != "" {
 55 | 		landingConfig := web.LandingConfig{
 56 | 			Name:        "uWSGI Exporter",
 57 | 			Description: "Prometheus Exporter for uWSGI.",
 58 | 			Version:     version.Info(),
 59 | 			Links: []web.LandingLinks{
 60 | 				{
 61 | 					Address: *metricsPath,
 62 | 					Text:    "Metrics",
 63 | 				},
 64 | 			},
 65 | 		}
 66 | 		landingPage, err := web.NewLandingPage(landingConfig)
 67 | 		if err != nil {
 68 | 			level.Error(logger).Log("error", err)
 69 | 			os.Exit(1)
 70 | 		}
 71 | 		http.Handle("/", landingPage)
 72 | 	}
 73 | 	http.HandleFunc("/probe", handleProbe(collector.NewMetrics(), logger))
 74 | 	http.HandleFunc("/-/healthy", func(w http.ResponseWriter, r *http.Request) {
 75 | 		w.WriteHeader(200)
 76 | 		io.WriteString(w, "ok")
 77 | 	})
 78 | 
 79 | 	srv := &http.Server{} //#nosec
 80 | 	err := web.ListenAndServe(srv, webConfig, logger)
 81 | 	if err != nil {
 82 | 		level.Error(logger).Log("msg", "Failed to listen address", "error", err)
 83 | 		os.Exit(1)
 84 | 	}
 85 | }
 86 | 
 87 | func newHandler(metrics collector.Metrics, logger log.Logger) http.HandlerFunc {
 88 | 	return func(w http.ResponseWriter, r *http.Request) {
 89 | 		// Use request context for cancellation when connection gets closed.
 90 | 		timeoutSeconds, err := getTimeout(r, *timeoutOffset, logger)
 91 | 		if err != nil {
 92 | 			http.Error(w, err.Error(), http.StatusInternalServerError)
 93 | 			return
 94 | 		}
 95 | 
 96 | 		ctx, cancel := context.WithTimeout(r.Context(), time.Duration(timeoutSeconds*float64(time.Second)))
 97 | 		defer cancel()
 98 | 		r = r.WithContext(ctx)
 99 | 
100 | 		registry := prometheus.NewRegistry()
101 | 
102 | 		if *statsURI != "" {
103 | 			statsReader, err := collector.NewStatsReader(*statsURI)
104 | 			if err != nil {
105 | 				level.Error(logger).Log("msg", "Failed to create stats reader", "error", err)
106 | 				http.Error(w, err.Error(), http.StatusBadRequest)
107 | 				return
108 | 			}
109 | 
110 | 			registry.MustRegister(collector.New(ctx, *statsURI, statsReader, metrics, collector.ExporterOptions{
111 | 				Logger:       logger,
112 | 				CollectCores: *collectCores,
113 | 			}))
114 | 		}
115 | 
116 | 		gatherers := prometheus.Gatherers{
117 | 			prometheus.DefaultGatherer,
118 | 			registry,
119 | 		}
120 | 		// Delegate http serving to Prometheus client library, which will call collector.Collect.
121 | 		h := promhttp.HandlerFor(gatherers, promhttp.HandlerOpts{})
122 | 		h.ServeHTTP(w, r)
123 | 	}
124 | }
125 | 
126 | func handleProbe(metrics collector.Metrics, logger log.Logger) http.HandlerFunc {
127 | 	return func(w http.ResponseWriter, r *http.Request) {
128 | 		params := r.URL.Query()
129 | 		target := params.Get("target")
130 | 		if target == "" {
131 | 			http.Error(w, "target is required", http.StatusBadRequest)
132 | 			return
133 | 		}
134 | 
135 | 		timeoutSeconds, err := getTimeout(r, *timeoutOffset, logger)
136 | 		if err != nil {
137 | 			http.Error(w, err.Error(), http.StatusInternalServerError)
138 | 			return
139 | 		}
140 | 
141 | 		ctx, cancel := context.WithTimeout(r.Context(), time.Duration(timeoutSeconds*float64(time.Second)))
142 | 		defer cancel()
143 | 		r = r.WithContext(ctx)
144 | 
145 | 		statsReader, err := collector.NewStatsReader(target, collector.WithRequireSafeScheme(true))
146 | 		if err != nil {
147 | 			level.Error(logger).Log("msg", "Failed to create stats reader", "error", err)
148 | 			http.Error(w, err.Error(), http.StatusBadRequest)
149 | 			return
150 | 		}
151 | 
152 | 		registry := prometheus.NewRegistry()
153 | 		registry.MustRegister(collector.New(ctx, target, statsReader, metrics, collector.ExporterOptions{
154 | 			Logger:       logger,
155 | 			CollectCores: *collectCores,
156 | 		}))
157 | 
158 | 		h := promhttp.HandlerFor(registry, promhttp.HandlerOpts{})
159 | 		h.ServeHTTP(w, r)
160 | 	}
161 | }
162 | 
163 | func getTimeout(r *http.Request, offset float64, logger log.Logger) (timeoutSeconds float64, err error) {
164 | 	// If a timeout is configured via the Prometheus header, add it to the request.
165 | 	if v := r.Header.Get("X-Prometheus-Scrape-Timeout-Seconds"); v != "" {
166 | 		var err error
167 | 		timeoutSeconds, err = strconv.ParseFloat(v, 64)
168 | 		if err != nil {
169 | 			return 0, fmt.Errorf("failed to parse timeout from Prometheus header: %w", err)
170 | 		}
171 | 	}
172 | 	if timeoutSeconds == 0 {
173 | 		timeoutSeconds = 120
174 | 	}
175 | 
176 | 	if offset >= timeoutSeconds {
177 | 		// Ignore timeout offset if it doesn't leave time to scrape.
178 | 		level.Error(logger).Log("msg", "Timeout offset should be lower than prometheus scrape timeout", "offset", offset, "prometheus_scrape_timeout", timeoutSeconds)
179 | 	} else {
180 | 		// Subtract timeout offset from timeout.
181 | 		timeoutSeconds -= offset
182 | 	}
183 | 
184 | 	return timeoutSeconds, nil
185 | }
186 | 


--------------------------------------------------------------------------------
/cmd/uwsgi_exporter/main_test.go:
--------------------------------------------------------------------------------
  1 | // Copyright 2018 The Prometheus Authors
  2 | // Licensed under the Apache License, Version 2.0 (the "License");
  3 | // you may not use this file except in compliance with the License.
  4 | // You may obtain a copy of the License at
  5 | //
  6 | // http://www.apache.org/licenses/LICENSE-2.0
  7 | //
  8 | // Unless required by applicable law or agreed to in writing, software
  9 | // distributed under the License is distributed on an "AS IS" BASIS,
 10 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 11 | // See the License for the specific language governing permissions and
 12 | // limitations under the License.
 13 | 
 14 | package main
 15 | 
 16 | import (
 17 | 	"context"
 18 | 	_ "embed"
 19 | 	"fmt"
 20 | 	"io"
 21 | 	"net"
 22 | 	"net/http"
 23 | 	"net/url"
 24 | 	"os"
 25 | 	"os/exec"
 26 | 	"reflect"
 27 | 	"runtime"
 28 | 	"strings"
 29 | 	"syscall"
 30 | 	"testing"
 31 | 	"time"
 32 | 
 33 | 	"github.com/alecthomas/assert/v2"
 34 | )
 35 | 
 36 | // bin stores information about path of executable and attached port
 37 | type bin struct {
 38 | 	path string
 39 | 	port int
 40 | }
 41 | 
 42 | // TestBin builds, runs and tests binary.
 43 | func TestBin(t *testing.T) {
 44 | 	var err error
 45 | 	binName := "uwsgi_exporter"
 46 | 	binDir := t.TempDir()
 47 | 	importpath := "github.com/prometheus/common"
 48 | 	path := binDir + "/" + binName
 49 | 	xVariables := map[string]string{
 50 | 		importpath + "/version.Version":  "gotest-version",
 51 | 		importpath + "/version.Branch":   "gotest-branch",
 52 | 		importpath + "/version.Revision": "gotest-revision",
 53 | 	}
 54 | 	var ldflags []string
 55 | 	for x, value := range xVariables {
 56 | 		ldflags = append(ldflags, fmt.Sprintf("-X %s=%s", x, value))
 57 | 	}
 58 | 	cmd := exec.Command(
 59 | 		"go",
 60 | 		"build",
 61 | 		"-o",
 62 | 		path,
 63 | 		"-ldflags",
 64 | 		strings.Join(ldflags, " "),
 65 | 	)
 66 | 	cmd.Stdout = os.Stdout
 67 | 	cmd.Stderr = os.Stderr
 68 | 	err = cmd.Run()
 69 | 	assert.NoError(t, err)
 70 | 
 71 | 	tests := []func(*testing.T, bin){
 72 | 		testLanding,
 73 | 		testProbe,
 74 | 	}
 75 | 
 76 | 	portStart := 56000
 77 | 	t.Run(binName, func(t *testing.T) {
 78 | 		for _, f := range tests {
 79 | 			f := f // capture range variable
 80 | 			fName := runtime.FuncForPC(reflect.ValueOf(f).Pointer()).Name()
 81 | 			portStart++
 82 | 			data := bin{
 83 | 				path: path,
 84 | 				port: portStart,
 85 | 			}
 86 | 			t.Run(fName, func(t *testing.T) {
 87 | 				t.Parallel()
 88 | 				f(t, data)
 89 | 			})
 90 | 		}
 91 | 	})
 92 | }
 93 | 
 94 | //go:embed testdata/landing.html.golden
 95 | var landingHTMLData string
 96 | 
 97 | func testLanding(t *testing.T, data bin) {
 98 | 	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
 99 | 	defer cancel()
100 | 
101 | 	// Run exporter.
102 | 	//#nosec
103 | 	cmd := exec.CommandContext(
104 | 		ctx,
105 | 		data.path,
106 | 		"--web.listen-address", fmt.Sprintf(":%d", data.port),
107 | 	)
108 | 	if err := cmd.Start(); err != nil {
109 | 		t.Fatal(err)
110 | 	}
111 | 	defer cmd.Wait()
112 | 	defer cmd.Process.Kill()
113 | 
114 | 	// Get the main page.
115 | 	urlToGet := fmt.Sprintf("http://127.0.0.1:%d", data.port)
116 | 	body, err := waitForBody(urlToGet)
117 | 	assert.NoError(t, err)
118 | 	got := string(body)
119 | 
120 | 	assert.Equal(t, landingHTMLData, got)
121 | }
122 | 
123 | func testProbe(t *testing.T, data bin) {
124 | 	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
125 | 	defer cancel()
126 | 
127 | 	// Run exporter.
128 | 	//#nosec
129 | 	cmd := exec.CommandContext(
130 | 		ctx,
131 | 		data.path,
132 | 		"--web.listen-address", fmt.Sprintf(":%d", data.port),
133 | 	)
134 | 	if err := cmd.Start(); err != nil {
135 | 		t.Fatal(err)
136 | 	}
137 | 	defer cmd.Wait()
138 | 	defer cmd.Process.Kill()
139 | 
140 | 	// Get the main page.
141 | 	urlToGet := fmt.Sprintf("http://127.0.0.1:%d/probe", data.port)
142 | 	body, err := waitForBody(urlToGet)
143 | 	assert.NoError(t, err)
144 | 	got := strings.TrimSpace(string(body))
145 | 
146 | 	expected := `target is required`
147 | 
148 | 	assert.Equal(t, expected, got)
149 | }
150 | 
151 | // waitForBody is a helper function which makes http calls until http server is up
152 | // and then returns body of the successful call.
153 | func waitForBody(urlToGet string) (body []byte, err error) {
154 | 	tries := 60
155 | 
156 | 	// Get data, but we need to wait a bit for http server.
157 | 	for i := 0; i <= tries; i++ {
158 | 		// Try to get web page.
159 | 		body, err = getBody(urlToGet)
160 | 		if err == nil {
161 | 			return body, err
162 | 		}
163 | 
164 | 		// If there is a syscall.ECONNREFUSED error (web server not available) then retry.
165 | 		if urlError, ok := err.(*url.Error); ok {
166 | 			if opError, ok := urlError.Err.(*net.OpError); ok {
167 | 				if osSyscallError, ok := opError.Err.(*os.SyscallError); ok {
168 | 					if osSyscallError.Err == syscall.ECONNREFUSED {
169 | 						time.Sleep(1 * time.Second)
170 | 						continue
171 | 					}
172 | 				}
173 | 			}
174 | 		}
175 | 
176 | 		// There was an error, and it wasn't syscall.ECONNREFUSED.
177 | 		return nil, err
178 | 	}
179 | 
180 | 	return nil, fmt.Errorf("failed to GET %s after %d tries: %w", urlToGet, tries, err)
181 | }
182 | 
183 | // getBody is a helper function which retrieves http body from given address.
184 | func getBody(urlToGet string) ([]byte, error) {
185 | 	resp, err := http.Get(urlToGet) //#nosec
186 | 	if err != nil {
187 | 		return nil, err
188 | 	}
189 | 	defer resp.Body.Close()
190 | 
191 | 	body, err := io.ReadAll(resp.Body)
192 | 	if err != nil {
193 | 		return nil, err
194 | 	}
195 | 
196 | 	return body, nil
197 | }
198 | 


--------------------------------------------------------------------------------
/cmd/uwsgi_exporter/testdata/landing.html.golden:
--------------------------------------------------------------------------------
 1 | <html lang="en">
 2 |   <head>
 3 |     <meta charset="UTF-8">
 4 |     <meta name="viewport" content="width=device-width, initial-scale=1.0">
 5 |     <title>uWSGI Exporter</title>
 6 |     <style>body {
 7 |   font-family: -apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,Noto Sans,Liberation Sans,sans-serif,Apple Color Emoji,Segoe UI Emoji,Segoe UI Symbol,Noto Color Emoji;
 8 |   margin: 0;
 9 | }
10 | header {
11 |   background-color: #e6522c;
12 |   color: #fff;
13 |   font-size: 2rem;
14 |   padding: 1rem;
15 | }
16 | main {
17 |   padding: 1rem;
18 | }
19 | </style>
20 |   </head>
21 |   <body>
22 |     <header>
23 |       <h1>uWSGI Exporter</h1>
24 |     </header>
25 |     <main>
26 |       <h2>Prometheus Exporter for uWSGI.</h2>
27 |       <div>Version: (version=gotest-version, branch=gotest-branch, revision=gotest-revision)</div>
28 |       <div>
29 |         <ul>
30 |           
31 |           <li><a href="/metrics">Metrics</a></li>
32 |           
33 |         </ul>
34 |       </div>
35 |     </main>
36 |   </body>
37 | </html>
38 | 


--------------------------------------------------------------------------------
/go.mod:
--------------------------------------------------------------------------------
 1 | module github.com/timonwong/uwsgi_exporter
 2 | 
 3 | go 1.18
 4 | 
 5 | require (
 6 | 	github.com/alecthomas/assert/v2 v2.2.2
 7 | 	github.com/alecthomas/kingpin/v2 v2.3.2
 8 | 	github.com/go-kit/log v0.2.1
 9 | 	github.com/prometheus/client_golang v1.15.0
10 | 	github.com/prometheus/client_model v0.3.0
11 | 	github.com/prometheus/common v0.42.0
12 | 	github.com/prometheus/exporter-toolkit v0.9.1
13 | 	github.com/samber/lo v1.38.1
14 | )
15 | 
16 | require (
17 | 	github.com/alecthomas/repr v0.2.0 // indirect
18 | 	github.com/alecthomas/units v0.0.0-20211218093645-b94a6e3cc137 // indirect
19 | 	github.com/beorn7/perks v1.0.1 // indirect
20 | 	github.com/cespare/xxhash/v2 v2.2.0 // indirect
21 | 	github.com/coreos/go-systemd/v22 v22.5.0 // indirect
22 | 	github.com/go-logfmt/logfmt v0.5.1 // indirect
23 | 	github.com/golang/protobuf v1.5.3 // indirect
24 | 	github.com/hexops/gotextdiff v1.0.3 // indirect
25 | 	github.com/jpillora/backoff v1.0.0 // indirect
26 | 	github.com/kr/text v0.2.0 // indirect
27 | 	github.com/matttproud/golang_protobuf_extensions v1.0.4 // indirect
28 | 	github.com/mwitkow/go-conntrack v0.0.0-20190716064945-2f068394615f // indirect
29 | 	github.com/prometheus/procfs v0.9.0 // indirect
30 | 	github.com/rogpeppe/go-internal v1.9.0 // indirect
31 | 	github.com/xhit/go-str2duration/v2 v2.1.0 // indirect
32 | 	golang.org/x/crypto v0.7.0 // indirect
33 | 	golang.org/x/exp v0.0.0-20220303212507-bbda1eaf7a17 // indirect
34 | 	golang.org/x/net v0.8.0 // indirect
35 | 	golang.org/x/oauth2 v0.6.0 // indirect
36 | 	golang.org/x/sync v0.1.0 // indirect
37 | 	golang.org/x/sys v0.6.0 // indirect
38 | 	golang.org/x/text v0.8.0 // indirect
39 | 	google.golang.org/appengine v1.6.7 // indirect
40 | 	google.golang.org/protobuf v1.30.0 // indirect
41 | 	gopkg.in/yaml.v2 v2.4.0 // indirect
42 | )
43 | 


--------------------------------------------------------------------------------
/go.sum:
--------------------------------------------------------------------------------
 1 | github.com/alecthomas/assert/v2 v2.2.2 h1:Z/iVC0xZfWTaFNE6bA3z07T86hd45Xe2eLt6WVy2bbk=
 2 | github.com/alecthomas/assert/v2 v2.2.2/go.mod h1:pXcQ2Asjp247dahGEmsZ6ru0UVwnkhktn7S0bBDLxvQ=
 3 | github.com/alecthomas/kingpin/v2 v2.3.2 h1:H0aULhgmSzN8xQ3nX1uxtdlTHYoPLu5AhHxWrKI6ocU=
 4 | github.com/alecthomas/kingpin/v2 v2.3.2/go.mod h1:0gyi0zQnjuFk8xrkNKamJoyUo382HRL7ATRpFZCw6tE=
 5 | github.com/alecthomas/repr v0.2.0 h1:HAzS41CIzNW5syS8Mf9UwXhNH1J9aix/BvDRf1Ml2Yk=
 6 | github.com/alecthomas/repr v0.2.0/go.mod h1:Fr0507jx4eOXV7AlPV6AVZLYrLIuIeSOWtW57eE/O/4=
 7 | github.com/alecthomas/units v0.0.0-20211218093645-b94a6e3cc137 h1:s6gZFSlWYmbqAuRjVTiNNhvNRfY2Wxp9nhfyel4rklc=
 8 | github.com/alecthomas/units v0.0.0-20211218093645-b94a6e3cc137/go.mod h1:OMCwj8VM1Kc9e19TLln2VL61YJF0x1XFtfdL4JdbSyE=
 9 | github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM=
10 | github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw=
11 | github.com/cespare/xxhash/v2 v2.2.0 h1:DC2CZ1Ep5Y4k3ZQ899DldepgrayRUGE6BBZ/cd9Cj44=
12 | github.com/cespare/xxhash/v2 v2.2.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
13 | github.com/coreos/go-systemd/v22 v22.5.0 h1:RrqgGjYQKalulkV8NGVIfkXQf6YYmOyiJKk8iXXhfZs=
14 | github.com/coreos/go-systemd/v22 v22.5.0/go.mod h1:Y58oyj3AT4RCenI/lSvhwexgC+NSVTIJ3seZv2GcEnc=
15 | github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
16 | github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
17 | github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
18 | github.com/go-kit/log v0.2.1 h1:MRVx0/zhvdseW+Gza6N9rVzU/IVzaeE1SFI4raAhmBU=
19 | github.com/go-kit/log v0.2.1/go.mod h1:NwTd00d/i8cPZ3xOwwiv2PO5MOcx78fFErGNcVmBjv0=
20 | github.com/go-logfmt/logfmt v0.5.1 h1:otpy5pqBCBZ1ng9RQ0dPu4PN7ba75Y/aA+UpowDyNVA=
21 | github.com/go-logfmt/logfmt v0.5.1/go.mod h1:WYhtIu8zTZfxdn5+rREduYbwxfcBr/Vr6KEVveWlfTs=
22 | github.com/godbus/dbus/v5 v5.0.4/go.mod h1:xhWf0FNVPg57R7Z0UbKHbJfkEywrmjJnf7w5xrFpKfA=
23 | github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
24 | github.com/golang/protobuf v1.3.1/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
25 | github.com/golang/protobuf v1.3.5/go.mod h1:6O5/vntMXwX2lRkT1hjjk0nAC1IDOTvTlVgjlRvqsdk=
26 | github.com/golang/protobuf v1.5.0/go.mod h1:FsONVRAS9T7sI+LIUmWTfcYkHO4aIWwzhcaSAoJOfIk=
27 | github.com/golang/protobuf v1.5.3 h1:KhyjKVUg7Usr/dYsdSqoFveMYd5ko72D+zANwlG1mmg=
28 | github.com/golang/protobuf v1.5.3/go.mod h1:XVQd3VNwM+JqD3oG2Ue2ip4fOMUkwXdXDdiuN0vRsmY=
29 | github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
30 | github.com/google/go-cmp v0.5.9 h1:O2Tfq5qg4qc4AmwVlvv0oLiVAGB7enBSJ2x2DqQFi38=
31 | github.com/hexops/gotextdiff v1.0.3 h1:gitA9+qJrrTCsiCl7+kh75nPqQt1cx4ZkudSTLoUqJM=
32 | github.com/hexops/gotextdiff v1.0.3/go.mod h1:pSWU5MAI3yDq+fZBTazCSJysOMbxWL1BSow5/V2vxeg=
33 | github.com/jpillora/backoff v1.0.0 h1:uvFg412JmmHBHw7iwprIxkPMI+sGQ4kzOWsMeHnm2EA=
34 | github.com/jpillora/backoff v1.0.0/go.mod h1:J/6gKK9jxlEcS3zixgDgUAsiuZ7yrSoa/FX5e0EB2j4=
35 | github.com/kr/pretty v0.3.1 h1:flRD4NNwYAUpkphVc1HcthR4KEIFJ65n8Mw5qdRn3LE=
36 | github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
37 | github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
38 | github.com/matttproud/golang_protobuf_extensions v1.0.4 h1:mmDVorXM7PCGKw94cs5zkfA9PSy5pEvNWRP0ET0TIVo=
39 | github.com/matttproud/golang_protobuf_extensions v1.0.4/go.mod h1:BSXmuO+STAnVfrANrmjBb36TMTDstsz7MSK+HVaYKv4=
40 | github.com/mwitkow/go-conntrack v0.0.0-20190716064945-2f068394615f h1:KUppIJq7/+SVif2QVs3tOP0zanoHgBEVAwHxUSIzRqU=
41 | github.com/mwitkow/go-conntrack v0.0.0-20190716064945-2f068394615f/go.mod h1:qRWi+5nqEBWmkhHvq77mSJWrCKwh8bxhgT7d/eI7P4U=
42 | github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
43 | github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
44 | github.com/prometheus/client_golang v1.15.0 h1:5fCgGYogn0hFdhyhLbw7hEsWxufKtY9klyvdNfFlFhM=
45 | github.com/prometheus/client_golang v1.15.0/go.mod h1:e9yaBhRPU2pPNsZwE+JdQl0KEt1N9XgF6zxWmaC0xOk=
46 | github.com/prometheus/client_model v0.3.0 h1:UBgGFHqYdG/TPFD1B1ogZywDqEkwp3fBMvqdiQ7Xew4=
47 | github.com/prometheus/client_model v0.3.0/go.mod h1:LDGWKZIo7rky3hgvBe+caln+Dr3dPggB5dvjtD7w9+w=
48 | github.com/prometheus/common v0.42.0 h1:EKsfXEYo4JpWMHH5cg+KOUWeuJSov1Id8zGR8eeI1YM=
49 | github.com/prometheus/common v0.42.0/go.mod h1:xBwqVerjNdUDjgODMpudtOMwlOwf2SaTr1yjz4b7Zbc=
50 | github.com/prometheus/exporter-toolkit v0.9.1 h1:cNkC01riqiOS+kh3zdnNwRsbe/Blh0WwK3ij5rPJ9Sw=
51 | github.com/prometheus/exporter-toolkit v0.9.1/go.mod h1:iFlTmFISCix0vyuyBmm0UqOUCTao9+RsAsKJP3YM9ec=
52 | github.com/prometheus/procfs v0.9.0 h1:wzCHvIvM5SxWqYvwgVL7yJY8Lz3PKn49KQtpgMYJfhI=
53 | github.com/prometheus/procfs v0.9.0/go.mod h1:+pB4zwohETzFnmlpe6yd2lSc+0/46IYZRB/chUwxUZY=
54 | github.com/rogpeppe/go-internal v1.9.0 h1:73kH8U+JUqXU8lRuOHeVHaa/SZPifC7BkcraZVejAe8=
55 | github.com/rogpeppe/go-internal v1.9.0/go.mod h1:WtVeX8xhTBvf0smdhujwtBcq4Qrzq/fJaraNFVN+nFs=
56 | github.com/samber/lo v1.38.1 h1:j2XEAqXKb09Am4ebOg31SpvzUTTs6EN3VfgeLUhPdXM=
57 | github.com/samber/lo v1.38.1/go.mod h1:+m/ZKRl6ClXCE2Lgf3MsQlWfh4bn1bz6CXEOxnEXnEA=
58 | github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
59 | github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
60 | github.com/stretchr/testify v1.8.2 h1:+h33VjcLVPDHtOdpUCuF+7gSuG3yGIftsP1YvFihtJ8=
61 | github.com/xhit/go-str2duration/v2 v2.1.0 h1:lxklc02Drh6ynqX+DdPyp5pCKLUQpRT8bp8Ydu2Bstc=
62 | github.com/xhit/go-str2duration/v2 v2.1.0/go.mod h1:ohY8p+0f07DiV6Em5LKB0s2YpLtXVyJfNt1+BlmyAsU=
63 | golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
64 | golang.org/x/crypto v0.7.0 h1:AvwMYaRytfdeVt3u6mLaxYtErKYjxA2OXjJ1HHq6t3A=
65 | golang.org/x/crypto v0.7.0/go.mod h1:pYwdfH91IfpZVANVyUOhSIPZaFoJGxTFbZhFTx+dXZU=
66 | golang.org/x/exp v0.0.0-20220303212507-bbda1eaf7a17 h1:3MTrJm4PyNL9NBqvYDSj3DHl46qQakyfqfWo4jgfaEM=
67 | golang.org/x/exp v0.0.0-20220303212507-bbda1eaf7a17/go.mod h1:lgLbSvA5ygNOMpwM/9anMpWVlVJ7Z+cHWq/eFuinpGE=
68 | golang.org/x/net v0.0.0-20190603091049-60506f45cf65/go.mod h1:HSz+uSET+XFnRR8LxR5pz3Of3rY3CfYBVs4xY44aLks=
69 | golang.org/x/net v0.8.0 h1:Zrh2ngAOFYneWTAIAPethzeaQLuHwhuBkuV6ZiRnUaQ=
70 | golang.org/x/net v0.8.0/go.mod h1:QVkue5JL9kW//ek3r6jTKnTFis1tRmNAW2P1shuFdJc=
71 | golang.org/x/oauth2 v0.6.0 h1:Lh8GPgSKBfWSwFvtuWOfeI3aAAnbXTSutYxJiOJFgIw=
72 | golang.org/x/oauth2 v0.6.0/go.mod h1:ycmewcwgD4Rpr3eZJLSB4Kyyljb3qDh40vJ8STE5HKw=
73 | golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
74 | golang.org/x/sync v0.1.0 h1:wsuoTGHzEhffawBOhz5CYhcrV4IdKZbEyZjBMuTp12o=
75 | golang.org/x/sync v0.1.0/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
76 | golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
77 | golang.org/x/sys v0.6.0 h1:MVltZSvRTcU2ljQOhs94SXPftV6DCNnZViHeQps87pQ=
78 | golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
79 | golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
80 | golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
81 | golang.org/x/text v0.8.0 h1:57P1ETyNKtuIjB4SRd15iJxuhj8Gc416Y78H3qgMh68=
82 | golang.org/x/text v0.8.0/go.mod h1:e1OnstbJyHTd6l/uOt8jFFHp6TRDWZR/bV3emEE/zU8=
83 | golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
84 | golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
85 | google.golang.org/appengine v1.6.7 h1:FZR1q0exgwxzPzp/aF+VccGrSfxfPpkBqjIIEq3ru6c=
86 | google.golang.org/appengine v1.6.7/go.mod h1:8WjMMxjGQR8xUklV/ARdw2HLXBOI7O7uCIDZVag1xfc=
87 | google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
88 | google.golang.org/protobuf v1.26.0/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
89 | google.golang.org/protobuf v1.30.0 h1:kPPoIgf3TsEvrm0PFe15JQ+570QVxYzEvvHqChK+cng=
90 | google.golang.org/protobuf v1.30.0/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I=
91 | gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
92 | gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c h1:Hei/4ADfdWqJk1ZMxUNpqntNwaWcugrBjAiHlqqRiVk=
93 | gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
94 | gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
95 | gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
96 | gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
97 | 


--------------------------------------------------------------------------------
/pkg/collector/dialer_others.go:
--------------------------------------------------------------------------------
 1 | //go:build !windows
 2 | // +build !windows
 3 | 
 4 | /*
 5 | Copyright 2023 The Kubernetes Authors.
 6 | 
 7 | Licensed under the Apache License, Version 2.0 (the "License");
 8 | you may not use this file except in compliance with the License.
 9 | You may obtain a copy of the License at
10 | 
11 |     http://www.apache.org/licenses/LICENSE-2.0
12 | 
13 | Unless required by applicable law or agreed to in writing, software
14 | distributed under the License is distributed on an "AS IS" BASIS,
15 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 | See the License for the specific language governing permissions and
17 | limitations under the License.
18 | */
19 | 
20 | package collector
21 | 
22 | import (
23 | 	"net"
24 | 	"syscall"
25 | )
26 | 
27 | // newDialer returns a dialer optimized for probes to avoid lingering sockets on TIME-WAIT state.
28 | // The dialer reduces the TIME-WAIT period to 1 seconds instead of the OS default of 60 seconds.
29 | // Using 1 second instead of 0 because SO_LINGER socket option to 0 causes pending data to be
30 | // discarded and the connection to be aborted with an RST rather than for the pending data to be
31 | // transmitted and the connection closed cleanly with a FIN.
32 | // Ref: https://issues.k8s.io/89898
33 | func newDialer() *net.Dialer {
34 | 	dialer := &net.Dialer{
35 | 		Control: func(network, address string, c syscall.RawConn) error {
36 | 			return c.Control(func(fd uintptr) {
37 | 				syscall.SetsockoptLinger(int(fd), syscall.SOL_SOCKET, syscall.SO_LINGER, &syscall.Linger{Onoff: 1, Linger: 1}) //nolint:errcheck
38 | 			})
39 | 		},
40 | 	}
41 | 	return dialer
42 | }
43 | 


--------------------------------------------------------------------------------
/pkg/collector/dialer_windows.go:
--------------------------------------------------------------------------------
 1 | //go:build windows
 2 | // +build windows
 3 | 
 4 | /*
 5 | Copyright 2023 The Kubernetes Authors.
 6 | 
 7 | Licensed under the Apache License, Version 2.0 (the "License");
 8 | you may not use this file except in compliance with the License.
 9 | You may obtain a copy of the License at
10 | 
11 |     http://www.apache.org/licenses/LICENSE-2.0
12 | 
13 | Unless required by applicable law or agreed to in writing, software
14 | distributed under the License is distributed on an "AS IS" BASIS,
15 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 | See the License for the specific language governing permissions and
17 | limitations under the License.
18 | */
19 | 
20 | package collector
21 | 
22 | import (
23 | 	"net"
24 | 	"syscall"
25 | )
26 | 
27 | // newDialer returns a dialer optimized for probes to avoid lingering sockets on TIME-WAIT state.
28 | // The dialer reduces the TIME-WAIT period to 1 seconds instead of the OS default of 60 seconds.
29 | // Using 1 second instead of 0 because SO_LINGER socket option to 0 causes pending data to be
30 | // discarded and the connection to be aborted with an RST rather than for the pending data to be
31 | // transmitted and the connection closed cleanly with a FIN.
32 | // Ref: https://issues.k8s.io/89898
33 | func newDialer() *net.Dialer {
34 | 	dialer := &net.Dialer{
35 | 		Control: func(network, address string, c syscall.RawConn) error {
36 | 			return c.Control(func(fd uintptr) {
37 | 				syscall.SetsockoptLinger(syscall.Handle(fd), syscall.SOL_SOCKET, syscall.SO_LINGER, &syscall.Linger{Onoff: 1, Linger: 1}) //nolint:errcheck
38 | 			})
39 | 		},
40 | 	}
41 | 	return dialer
42 | }
43 | 


--------------------------------------------------------------------------------
/pkg/collector/exporter.go:
--------------------------------------------------------------------------------
  1 | package collector
  2 | 
  3 | import (
  4 | 	"context"
  5 | 	"strconv"
  6 | 	"time"
  7 | 
  8 | 	"github.com/go-kit/log"
  9 | 	"github.com/go-kit/log/level"
 10 | 	"github.com/prometheus/client_golang/prometheus"
 11 | )
 12 | 
 13 | const (
 14 | 	namespace = "uwsgi"
 15 | 	exporter  = "exporter"
 16 | 
 17 | 	usDivider = float64(time.Second / time.Microsecond)
 18 | )
 19 | 
 20 | var subsystemDescriptors = SubsystemDescriptors{
 21 | 	MainSubsystem: initDescriptors("", map[string]string{
 22 | 		"listen_queue_length": "Length of listen queue.",
 23 | 		"listen_queue_errors": "Number of listen queue errors.",
 24 | 		"signal_queue_length": "Length of signal queue.",
 25 | 		"workers":             "Number of workers.",
 26 | 	}, nil),
 27 | 
 28 | 	SocketSubsystem: initDescriptors("socket", map[string]string{
 29 | 		"queue_length":     "Length of socket queue.",
 30 | 		"max_queue_length": "Max length of socket queue.",
 31 | 		"shared":           "Is shared socket?",
 32 | 		"can_offload":      "Can socket offload?",
 33 | 	}, []string{"name", "proto"}),
 34 | 
 35 | 	WorkerSubsystem: initDescriptors("worker", map[string]string{
 36 | 		"accepting":                     "Is this worker accepting requests?",
 37 | 		"delta_requests":                "Number of delta requests",
 38 | 		"signal_queue_length":           "Length of signal queue.",
 39 | 		"rss_bytes":                     "Worker RSS bytes.",
 40 | 		"vsz_bytes":                     "Worker VSZ bytes.",
 41 | 		"running_time_seconds":          "Worker running time in seconds.",
 42 | 		"last_spawn_time_seconds":       "Last spawn time in seconds since epoch.",
 43 | 		"average_response_time_seconds": "Average response time in seconds.",
 44 | 		"apps":                          "Number of apps.",
 45 | 		"cores":                         "Number of cores.",
 46 | 
 47 | 		"requests_total":          "Total number of requests.",
 48 | 		"exceptions_total":        "Total number of exceptions.",
 49 | 		"harakiri_count_total":    "Total number of harakiri count.",
 50 | 		"signals_total":           "Total number of signals.",
 51 | 		"respawn_count_total":     "Total number of respawn count.",
 52 | 		"transmitted_bytes_total": "Worker transmitted bytes.",
 53 | 
 54 | 		// worker statuses (gauges)
 55 | 		"busy":  "Is core in busy?",
 56 | 		"idle":  "Is core in idle?",
 57 | 		"cheap": "Is core in cheap mode?",
 58 | 	}, []string{"worker_id"}),
 59 | 
 60 | 	WorkerAppSubsystem: initDescriptors("worker_app", map[string]string{
 61 | 		"startup_time_seconds": "How long this app took to start.",
 62 | 
 63 | 		"requests_total":   "Total number of requests.",
 64 | 		"exceptions_total": "Total number of exceptions.",
 65 | 	}, []string{"worker_id", "app_id", "mountpoint", "chdir"}),
 66 | 
 67 | 	WorkerCoreSubsystem: initDescriptors("worker_core", map[string]string{
 68 | 		"busy": "Is core busy",
 69 | 
 70 | 		"requests_total":           "Total number of requests.",
 71 | 		"static_requests_total":    "Total number of static requests.",
 72 | 		"routed_requests_total":    "Total number of routed requests.",
 73 | 		"offloaded_requests_total": "Total number of offloaded requests.",
 74 | 		"write_errors_total":       "Total number of write errors.",
 75 | 		"read_errors_total":        "Total number of read errors.",
 76 | 	}, []string{"worker_id", "core_id"}),
 77 | 
 78 | 	CacheSubsystem: initDescriptors("cache", map[string]string{
 79 | 		"hits":      "Total number of hits.",
 80 | 		"misses":    "Total number of misses.",
 81 | 		"full":      "Total Number of times cache full was hit.",
 82 | 		"items":     "Items in cache.",
 83 | 		"max_items": "Max items for this cache.",
 84 | 	}, []string{"name"}),
 85 | }
 86 | 
 87 | func initDescriptors(subsystem string, nameToHelp map[string]string, labels []string) Descriptors {
 88 | 	descriptors := make(Descriptors, len(nameToHelp))
 89 | 	for name, help := range nameToHelp {
 90 | 		labels := append([]string{"stats_uri"}, labels...)
 91 | 		descriptors[name] = prometheus.NewDesc(
 92 | 			prometheus.BuildFQName(namespace, subsystem, name),
 93 | 			help, labels, nil)
 94 | 	}
 95 | 
 96 | 	return descriptors
 97 | }
 98 | 
 99 | // Descriptors is a map for `prometheus.Desc` pointer.
100 | type Descriptors map[string]*prometheus.Desc
101 | 
102 | type SubsystemDescriptors struct {
103 | 	MainSubsystem       Descriptors
104 | 	SocketSubsystem     Descriptors
105 | 	WorkerSubsystem     Descriptors
106 | 	WorkerAppSubsystem  Descriptors
107 | 	WorkerCoreSubsystem Descriptors
108 | 	CacheSubsystem      Descriptors
109 | }
110 | 
111 | func (v *SubsystemDescriptors) Describe(ch chan<- *prometheus.Desc) {
112 | 	for _, descs := range []Descriptors{
113 | 		v.MainSubsystem,
114 | 		v.SocketSubsystem,
115 | 		v.WorkerSubsystem,
116 | 		v.WorkerAppSubsystem,
117 | 		v.WorkerCoreSubsystem,
118 | 		v.CacheSubsystem,
119 | 	} {
120 | 		for _, desc := range descs {
121 | 			ch <- desc
122 | 		}
123 | 	}
124 | }
125 | 
126 | // Exporter collects uwsgi metrics for prometheus.
127 | type Exporter struct {
128 | 	ctx         context.Context
129 | 	uri         string
130 | 	statsReader StatsReader
131 | 	metrics     Metrics
132 | 	ExporterOptions
133 | }
134 | 
135 | type ExporterOptions struct {
136 | 	Logger       log.Logger
137 | 	CollectCores bool
138 | }
139 | 
140 | // New creates a new uwsgi collector.
141 | func New(ctx context.Context, uri string, statsReader StatsReader, metrics Metrics, options ExporterOptions) *Exporter {
142 | 	return &Exporter{
143 | 		ctx:             ctx,
144 | 		uri:             uri,
145 | 		statsReader:     statsReader,
146 | 		metrics:         metrics,
147 | 		ExporterOptions: options,
148 | 	}
149 | }
150 | 
151 | // Describe describes all the metrics ever exported by the exporter.
152 | // It implements prometheus.Collector.
153 | func (e *Exporter) Describe(ch chan<- *prometheus.Desc) {
154 | 	ch <- e.metrics.TotalScrapes.Desc()
155 | 	ch <- e.metrics.Error.Desc()
156 | 	ch <- e.metrics.ScrapeDurations.Desc()
157 | 	ch <- e.metrics.ScrapeErrors.Desc()
158 | 	ch <- e.metrics.Up.Desc()
159 | 
160 | 	subsystemDescriptors.Describe(ch)
161 | }
162 | 
163 | // Collect fetches the stats from configured uwsgi stats location and
164 | // delivers them as Prometheus metrics. It implements prometheus.Collector.
165 | func (e *Exporter) Collect(ch chan<- prometheus.Metric) {
166 | 	e.scrape(e.ctx, ch)
167 | 
168 | 	ch <- e.metrics.TotalScrapes
169 | 	ch <- e.metrics.Error
170 | 	ch <- e.metrics.ScrapeDurations
171 | 	ch <- e.metrics.ScrapeErrors
172 | 	ch <- e.metrics.Up
173 | }
174 | 
175 | func (e *Exporter) scrape(ctx context.Context, ch chan<- prometheus.Metric) {
176 | 	e.metrics.TotalScrapes.Inc()
177 | 
178 | 	scrapeTime := time.Now()
179 | 
180 | 	e.metrics.Up.Set(1)
181 | 	e.metrics.Error.Set(0)
182 | 
183 | 	uwsgiStats, err := e.statsReader.Read(ctx)
184 | 	if err != nil {
185 | 		level.Error(e.Logger).Log("msg", "Scrape failed", "error", err)
186 | 
187 | 		e.metrics.ScrapeErrors.Inc()
188 | 		e.metrics.Up.Set(0)
189 | 		e.metrics.Error.Set(1)
190 | 		return
191 | 	}
192 | 
193 | 	level.Debug(e.Logger).Log("msg", "Scrape successful")
194 | 	e.metrics.ScrapeDurations.Observe(time.Since(scrapeTime).Seconds())
195 | 
196 | 	// Collect metrics from stats
197 | 	e.collectMetrics(uwsgiStats, ch)
198 | }
199 | 
200 | func (e *Exporter) mustNewGaugeMetric(desc *prometheus.Desc, value float64, labelValues ...string) prometheus.Metric {
201 | 	labelValues = append([]string{e.uri}, labelValues...)
202 | 	return prometheus.MustNewConstMetric(desc, prometheus.GaugeValue, value, labelValues...)
203 | }
204 | 
205 | func (e *Exporter) mustNewCounterMetric(desc *prometheus.Desc, value float64, labelValues ...string) prometheus.Metric {
206 | 	labelValues = append([]string{e.uri}, labelValues...)
207 | 	return prometheus.MustNewConstMetric(desc, prometheus.CounterValue, value, labelValues...)
208 | }
209 | 
210 | var availableWorkerStatuses = []string{"busy", "idle", "cheap"}
211 | 
212 | func (e *Exporter) collectMetrics(stats *UwsgiStats, ch chan<- prometheus.Metric) {
213 | 	availableWorkers := make([]UwsgiWorker, 0, len(stats.Workers))
214 | 	// Filter workers (filter out "stand-by" workers, in uwsgi's adaptive process respawn mode)
215 | 	for _, workerStats := range stats.Workers {
216 | 		if workerStats.ID == 0 {
217 | 			continue
218 | 		}
219 | 
220 | 		availableWorkers = append(availableWorkers, workerStats)
221 | 	}
222 | 
223 | 	// Main
224 | 	mainDescs := subsystemDescriptors.MainSubsystem
225 | 	ch <- e.mustNewGaugeMetric(mainDescs["listen_queue_length"], float64(stats.ListenQueue))
226 | 	ch <- e.mustNewGaugeMetric(mainDescs["listen_queue_errors"], float64(stats.ListenQueueErrors))
227 | 	ch <- e.mustNewGaugeMetric(mainDescs["signal_queue_length"], float64(stats.SignalQueue))
228 | 	ch <- e.mustNewGaugeMetric(mainDescs["workers"], float64(len(availableWorkers)))
229 | 
230 | 	// Sockets
231 | 	// NOTE(timonwong): Workaround bug #22
232 | 	type socketStatKey struct {
233 | 		Name  string
234 | 		Proto string
235 | 	}
236 | 	sockets := make(map[socketStatKey]UwsgiSocket, len(stats.Sockets))
237 | 	for _, socket := range stats.Sockets {
238 | 		key := socketStatKey{Name: socket.Name, Proto: socket.Proto}
239 | 		if _, ok := sockets[key]; !ok {
240 | 			// First one with the same key take precedence.
241 | 			sockets[key] = socket
242 | 		}
243 | 	}
244 | 
245 | 	socketDescs := subsystemDescriptors.SocketSubsystem
246 | 	for key, socket := range sockets {
247 | 		labelValues := []string{key.Name, key.Proto}
248 | 
249 | 		ch <- e.mustNewGaugeMetric(socketDescs["queue_length"], float64(socket.Queue), labelValues...)
250 | 		ch <- e.mustNewGaugeMetric(socketDescs["max_queue_length"], float64(socket.MaxQueue), labelValues...)
251 | 		ch <- e.mustNewGaugeMetric(socketDescs["shared"], float64(socket.Shared), labelValues...)
252 | 		ch <- e.mustNewGaugeMetric(socketDescs["can_offload"], float64(socket.CanOffload), labelValues...)
253 | 	}
254 | 
255 | 	// Workers
256 | 	workerDescs := subsystemDescriptors.WorkerSubsystem
257 | 	workerAppDescs := subsystemDescriptors.WorkerAppSubsystem
258 | 	workerCoreDescs := subsystemDescriptors.WorkerCoreSubsystem
259 | 	cacheDescs := subsystemDescriptors.CacheSubsystem
260 | 
261 | 	for _, workerStats := range availableWorkers {
262 | 		labelValues := []string{strconv.Itoa(workerStats.ID)}
263 | 
264 | 		ch <- e.mustNewGaugeMetric(workerDescs["accepting"], float64(workerStats.Accepting), labelValues...)
265 | 		ch <- e.mustNewGaugeMetric(workerDescs["delta_requests"], float64(workerStats.DeltaRequests), labelValues...)
266 | 		ch <- e.mustNewGaugeMetric(workerDescs["signal_queue_length"], float64(workerStats.SignalQueue), labelValues...)
267 | 		ch <- e.mustNewGaugeMetric(workerDescs["rss_bytes"], float64(workerStats.RSS), labelValues...)
268 | 		ch <- e.mustNewGaugeMetric(workerDescs["vsz_bytes"], float64(workerStats.VSZ), labelValues...)
269 | 		ch <- e.mustNewGaugeMetric(workerDescs["running_time_seconds"], float64(workerStats.RunningTime)/usDivider, labelValues...)
270 | 		ch <- e.mustNewGaugeMetric(workerDescs["last_spawn_time_seconds"], float64(workerStats.LastSpawn), labelValues...)
271 | 		ch <- e.mustNewGaugeMetric(workerDescs["average_response_time_seconds"], float64(workerStats.AvgRt)/usDivider, labelValues...)
272 | 
273 | 		for _, st := range availableWorkerStatuses {
274 | 			v := float64(0)
275 | 			if workerStats.Status == st {
276 | 				v = 1.0
277 | 			}
278 | 			ch <- e.mustNewGaugeMetric(workerDescs[st], v, labelValues...)
279 | 		}
280 | 
281 | 		ch <- e.mustNewCounterMetric(workerDescs["requests_total"], float64(workerStats.Requests), labelValues...)
282 | 		ch <- e.mustNewCounterMetric(workerDescs["exceptions_total"], float64(workerStats.Exceptions), labelValues...)
283 | 		ch <- e.mustNewCounterMetric(workerDescs["harakiri_count_total"], float64(workerStats.HarakiriCount), labelValues...)
284 | 		ch <- e.mustNewCounterMetric(workerDescs["signals_total"], float64(workerStats.Signals), labelValues...)
285 | 		ch <- e.mustNewCounterMetric(workerDescs["respawn_count_total"], float64(workerStats.RespawnCount), labelValues...)
286 | 		ch <- e.mustNewCounterMetric(workerDescs["transmitted_bytes_total"], float64(workerStats.TX), labelValues...)
287 | 
288 | 		// Worker Apps
289 | 		ch <- e.mustNewGaugeMetric(workerDescs["apps"], float64(len(workerStats.Apps)), labelValues...)
290 | 		for _, appStats := range workerStats.Apps {
291 | 			labelValues := []string{strconv.Itoa(workerStats.ID), strconv.Itoa(appStats.ID), appStats.MountPoint, appStats.Chdir}
292 | 			ch <- e.mustNewGaugeMetric(workerAppDescs["startup_time_seconds"], float64(appStats.StartupTime), labelValues...)
293 | 
294 | 			ch <- e.mustNewCounterMetric(workerAppDescs["requests_total"], float64(appStats.Requests), labelValues...)
295 | 			ch <- e.mustNewCounterMetric(workerAppDescs["exceptions_total"], float64(appStats.Exceptions), labelValues...)
296 | 		}
297 | 
298 | 		// Worker Cores
299 | 		ch <- e.mustNewGaugeMetric(workerDescs["cores"], float64(len(workerStats.Cores)), labelValues...)
300 | 		if e.CollectCores {
301 | 			for _, coreStats := range workerStats.Cores {
302 | 				labelValues := []string{strconv.Itoa(workerStats.ID), strconv.Itoa(coreStats.ID)}
303 | 				ch <- e.mustNewGaugeMetric(workerCoreDescs["busy"], float64(coreStats.InRequest), labelValues...)
304 | 
305 | 				ch <- e.mustNewCounterMetric(workerCoreDescs["requests_total"], float64(coreStats.Requests), labelValues...)
306 | 				ch <- e.mustNewCounterMetric(workerCoreDescs["static_requests_total"], float64(coreStats.StaticRequests), labelValues...)
307 | 				ch <- e.mustNewCounterMetric(workerCoreDescs["routed_requests_total"], float64(coreStats.RoutedRequests), labelValues...)
308 | 				ch <- e.mustNewCounterMetric(workerCoreDescs["offloaded_requests_total"], float64(coreStats.OffloadedRequests), labelValues...)
309 | 				ch <- e.mustNewCounterMetric(workerCoreDescs["write_errors_total"], float64(coreStats.WriteErrors), labelValues...)
310 | 				ch <- e.mustNewCounterMetric(workerCoreDescs["read_errors_total"], float64(coreStats.ReadErrors), labelValues...)
311 | 			}
312 | 		}
313 | 	}
314 | 
315 | 	for _, cacheStats := range stats.Caches {
316 | 		labelValues := []string{cacheStats.Name}
317 | 		ch <- e.mustNewCounterMetric(cacheDescs["hits"], float64(cacheStats.Hits), labelValues...)
318 | 		ch <- e.mustNewCounterMetric(cacheDescs["misses"], float64(cacheStats.Misses), labelValues...)
319 | 		ch <- e.mustNewCounterMetric(cacheDescs["full"], float64(cacheStats.Full), labelValues...)
320 | 
321 | 		ch <- e.mustNewGaugeMetric(cacheDescs["items"], float64(cacheStats.Items), labelValues...)
322 | 		ch <- e.mustNewGaugeMetric(cacheDescs["max_items"], float64(cacheStats.MaxItems), labelValues...)
323 | 	}
324 | }
325 | 
326 | // Metrics represents exporter metrics which values can be carried between http requests.
327 | type Metrics struct {
328 | 	TotalScrapes    prometheus.Counter
329 | 	ScrapeErrors    prometheus.Counter
330 | 	ScrapeDurations prometheus.Summary
331 | 	Error           prometheus.Gauge
332 | 	Up              prometheus.Gauge
333 | }
334 | 
335 | // NewMetrics creates new Metrics instance.
336 | func NewMetrics() Metrics {
337 | 	subsystem := exporter
338 | 	return Metrics{
339 | 		TotalScrapes: prometheus.NewCounter(prometheus.CounterOpts{
340 | 			Namespace: namespace,
341 | 			Subsystem: subsystem,
342 | 			Name:      "scrapes_total",
343 | 			Help:      "Total number of times uWSGI was scraped for metrics.",
344 | 		}),
345 | 		ScrapeErrors: prometheus.NewCounter(prometheus.CounterOpts{
346 | 			Namespace: namespace,
347 | 			Subsystem: subsystem,
348 | 			Name:      "scrape_errors_total",
349 | 			Help:      "Total number of times an error occurred scraping a uWSGI.",
350 | 		}),
351 | 		ScrapeDurations: prometheus.NewSummary(prometheus.SummaryOpts{
352 | 			Namespace: namespace,
353 | 			Subsystem: subsystem,
354 | 			Name:      "scrape_duration_seconds",
355 | 			Help:      "Duration of uWSGI scrape job.",
356 | 		}),
357 | 		Error: prometheus.NewGauge(prometheus.GaugeOpts{
358 | 			Namespace: namespace,
359 | 			Subsystem: subsystem,
360 | 			Name:      "last_scrape_error",
361 | 			Help:      "Whether the last scrape of metrics from uWSGI resulted in an error (1 for error, 0 for success).",
362 | 		}),
363 | 		Up: prometheus.NewGauge(prometheus.GaugeOpts{
364 | 			Namespace: namespace,
365 | 			Name:      "up",
366 | 			Help:      "Whether the uWSGI server is up.",
367 | 		}),
368 | 	}
369 | }
370 | 


--------------------------------------------------------------------------------
/pkg/collector/exporter_test.go:
--------------------------------------------------------------------------------
  1 | package collector
  2 | 
  3 | import (
  4 | 	"context"
  5 | 	_ "embed"
  6 | 	"net/http"
  7 | 	"net/http/httptest"
  8 | 	"os"
  9 | 	"path/filepath"
 10 | 	"testing"
 11 | 
 12 | 	"github.com/alecthomas/assert/v2"
 13 | 	"github.com/go-kit/log"
 14 | 	"github.com/prometheus/client_golang/prometheus"
 15 | 	dto "github.com/prometheus/client_model/go"
 16 | 	"github.com/samber/lo"
 17 | )
 18 | 
 19 | var (
 20 | 	sampleUwsgiStatsFileName string
 21 | 	//go:embed testdata/sample.json
 22 | 	sampleUwsgiStatsJSON []byte
 23 | 	//go:embed testdata/wrong.json
 24 | 	wrongUwsgiStatsJSON []byte
 25 | )
 26 | 
 27 | func init() {
 28 | 	sampleUwsgiStatsFileName = lo.Must(filepath.Abs("testdata/sample.json"))
 29 | }
 30 | 
 31 | func newUwsgiStatsServer(response []byte) *httptest.Server {
 32 | 	handlerFunc := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 33 | 		header := w.Header()
 34 | 		header.Set("Content-Type", "application/json")
 35 | 		w.Write(response)
 36 | 	})
 37 | 	s := httptest.NewServer(handlerFunc)
 38 | 	return s
 39 | }
 40 | 
 41 | type labelMap map[string]string
 42 | 
 43 | type MetricResult struct {
 44 | 	labels     labelMap
 45 | 	value      float64
 46 | 	metricType dto.MetricType
 47 | }
 48 | 
 49 | func readMetric(m prometheus.Metric) MetricResult {
 50 | 	pb := &dto.Metric{}
 51 | 	m.Write(pb)
 52 | 	labels := make(labelMap, len(pb.Label))
 53 | 	for _, v := range pb.Label {
 54 | 		labels[v.GetName()] = v.GetValue()
 55 | 	}
 56 | 	if pb.Gauge != nil {
 57 | 		return MetricResult{labels: labels, value: pb.GetGauge().GetValue(), metricType: dto.MetricType_GAUGE}
 58 | 	}
 59 | 	if pb.Counter != nil {
 60 | 		return MetricResult{labels: labels, value: pb.GetCounter().GetValue(), metricType: dto.MetricType_COUNTER}
 61 | 	}
 62 | 	if pb.Summary != nil {
 63 | 		return MetricResult{labels: labels, value: 0, metricType: dto.MetricType_SUMMARY}
 64 | 	}
 65 | 
 66 | 	panic("Unsupported metric type")
 67 | }
 68 | 
 69 | func TestUwsgiExporter_CollectWrongJSON(t *testing.T) {
 70 | 	s := newUwsgiStatsServer(wrongUwsgiStatsJSON)
 71 | 	logger := log.NewLogfmtLogger(os.Stderr)
 72 | 	ctx, cancel := context.WithTimeout(context.Background(), someTimeout)
 73 | 	defer cancel()
 74 | 
 75 | 	statsReader, err := NewStatsReader(s.URL)
 76 | 	assert.NoError(t, err)
 77 | 
 78 | 	exporter := New(ctx, s.URL, statsReader, NewMetrics(), ExporterOptions{
 79 | 		Logger:       logger,
 80 | 		CollectCores: false,
 81 | 	})
 82 | 
 83 | 	ch := make(chan prometheus.Metric)
 84 | 
 85 | 	go func() {
 86 | 		defer close(ch)
 87 | 		defer s.Close()
 88 | 		exporter.Collect(ch)
 89 | 	}()
 90 | 
 91 | 	// total_scrapes
 92 | 	expected := MetricResult{labels: labelMap{}, value: 1, metricType: dto.MetricType_COUNTER}
 93 | 	got := readMetric(<-ch)
 94 | 	assert.Equal(t, expected, got)
 95 | 
 96 | 	// error
 97 | 	expected = MetricResult{labels: labelMap{}, value: 1, metricType: dto.MetricType_GAUGE}
 98 | 	got = readMetric(<-ch)
 99 | 	assert.Equal(t, expected, got)
100 | 
101 | 	// scrape duration
102 | 	expected = MetricResult{labels: labelMap{}, value: 0, metricType: dto.MetricType_SUMMARY}
103 | 	got = readMetric(<-ch)
104 | 	assert.Equal(t, expected, got)
105 | 
106 | 	// scrape_errors
107 | 	expected = MetricResult{labels: labelMap{}, value: 1, metricType: dto.MetricType_COUNTER}
108 | 	got = readMetric(<-ch)
109 | 	assert.Equal(t, expected, got)
110 | 
111 | 	// uwsgi_up
112 | 	expected = MetricResult{labels: labelMap{}, value: 0, metricType: dto.MetricType_GAUGE}
113 | 	got = readMetric(<-ch)
114 | 	assert.Equal(t, expected, got)
115 | }
116 | 
117 | func TestUwsgiExporter_Collect(t *testing.T) {
118 | 	s := newUwsgiStatsServer(sampleUwsgiStatsJSON)
119 | 	logger := log.NewLogfmtLogger(os.Stderr)
120 | 	ctx, cancel := context.WithTimeout(context.Background(), someTimeout)
121 | 	defer cancel()
122 | 
123 | 	statsReader, err := NewStatsReader(s.URL)
124 | 	assert.NoError(t, err)
125 | 
126 | 	exporter := New(ctx, s.URL, statsReader, NewMetrics(), ExporterOptions{
127 | 		Logger:       logger,
128 | 		CollectCores: true,
129 | 	})
130 | 
131 | 	ch := make(chan prometheus.Metric)
132 | 
133 | 	go func() {
134 | 		defer close(ch)
135 | 		defer s.Close()
136 | 		exporter.Collect(ch)
137 | 	}()
138 | 
139 | 	// main
140 | 	labels := labelMap{"stats_uri": s.URL}
141 | 	mainMetricResults := []MetricResult{
142 | 		// listen_queue_length
143 | 		{labels: labels, value: 0, metricType: dto.MetricType_GAUGE},
144 | 		// listen_queue_errors
145 | 		{labels: labels, value: 0, metricType: dto.MetricType_GAUGE},
146 | 		// signal_queue_length
147 | 		{labels: labels, value: 0, metricType: dto.MetricType_GAUGE},
148 | 		// workers
149 | 		{labels: labels, value: 2, metricType: dto.MetricType_GAUGE},
150 | 	}
151 | 	for id, expect := range mainMetricResults {
152 | 		got := readMetric(<-ch)
153 | 		assert.Equal(t, expect, got, "Wrong main stats at id: %d", id)
154 | 	}
155 | 
156 | 	// sockets
157 | 	labels = labelMap{"name": "127.0.0.1:36577", "proto": "uwsgi", "stats_uri": s.URL}
158 | 	socketMetricResults := []MetricResult{
159 | 		{labels: labels, value: 0, metricType: dto.MetricType_GAUGE},
160 | 		{labels: labels, value: 100, metricType: dto.MetricType_GAUGE},
161 | 		{labels: labels, value: 0, metricType: dto.MetricType_GAUGE},
162 | 		{labels: labels, value: 0, metricType: dto.MetricType_GAUGE},
163 | 	}
164 | 	for _, expect := range socketMetricResults {
165 | 		got := readMetric(<-ch)
166 | 		assert.Equal(t, expect, got, "Wrong socket stats")
167 | 	}
168 | 
169 | 	// worker
170 | 	workerLabels := labelMap{"stats_uri": s.URL, "worker_id": "1"}
171 | 	workerMetricResults := []MetricResult{
172 | 		{labels: workerLabels, value: 1, metricType: dto.MetricType_GAUGE},
173 | 		{labels: workerLabels, value: 0, metricType: dto.MetricType_GAUGE},
174 | 		{labels: workerLabels, value: 0, metricType: dto.MetricType_GAUGE},
175 | 		{labels: workerLabels, value: 0, metricType: dto.MetricType_GAUGE},
176 | 		{labels: workerLabels, value: 0, metricType: dto.MetricType_GAUGE},
177 | 		{labels: workerLabels, value: 0, metricType: dto.MetricType_GAUGE},
178 | 		{labels: workerLabels, value: 1457410597, metricType: dto.MetricType_GAUGE}, // last_spawn
179 | 		{labels: workerLabels, value: 0, metricType: dto.MetricType_GAUGE},
180 | 		{labels: workerLabels, value: 0, metricType: dto.MetricType_GAUGE}, // busy
181 | 		{labels: workerLabels, value: 1, metricType: dto.MetricType_GAUGE}, // idle
182 | 		{labels: workerLabels, value: 0, metricType: dto.MetricType_GAUGE}, // cheap
183 | 		{labels: workerLabels, value: 0, metricType: dto.MetricType_COUNTER},
184 | 		{labels: workerLabels, value: 0, metricType: dto.MetricType_COUNTER},
185 | 		{labels: workerLabels, value: 0, metricType: dto.MetricType_COUNTER},
186 | 		{labels: workerLabels, value: 0, metricType: dto.MetricType_COUNTER},
187 | 		{labels: workerLabels, value: 1, metricType: dto.MetricType_COUNTER},
188 | 		{labels: workerLabels, value: 0, metricType: dto.MetricType_COUNTER},
189 | 	}
190 | 	for idx, expect := range workerMetricResults {
191 | 		got := readMetric(<-ch)
192 | 		assert.Equal(t, expect, got, "Wrong worker stats at idx %d", idx)
193 | 	}
194 | 
195 | 	// worker apps
196 | 	labels = labelMap{"stats_uri": s.URL, "worker_id": "1", "chdir": "", "mountpoint": "", "app_id": "0"}
197 | 	workerAppMetricResults := []MetricResult{
198 | 		{labels: workerLabels, value: 1, metricType: dto.MetricType_GAUGE}, // app count
199 | 
200 | 		{labels: labels, value: 0, metricType: dto.MetricType_GAUGE},
201 | 
202 | 		{labels: labels, value: 0, metricType: dto.MetricType_COUNTER},
203 | 		{labels: labels, value: 0, metricType: dto.MetricType_COUNTER},
204 | 	}
205 | 	for _, expect := range workerAppMetricResults {
206 | 		got := readMetric(<-ch)
207 | 		assert.Equal(t, expect, got, "Wrong worker app stats")
208 | 	}
209 | 
210 | 	// worker cores
211 | 	labels = labelMap{"stats_uri": s.URL, "worker_id": "1", "core_id": "0"}
212 | 	workerCoreMetricResults := []MetricResult{
213 | 		{labels: workerLabels, value: 1, metricType: dto.MetricType_GAUGE}, // core count
214 | 
215 | 		{labels: labels, value: 0, metricType: dto.MetricType_GAUGE}, // in_requests
216 | 
217 | 		{labels: labels, value: 0, metricType: dto.MetricType_COUNTER}, // requests_total
218 | 		{labels: labels, value: 0, metricType: dto.MetricType_COUNTER},
219 | 		{labels: labels, value: 0, metricType: dto.MetricType_COUNTER},
220 | 		{labels: labels, value: 0, metricType: dto.MetricType_COUNTER},
221 | 		{labels: labels, value: 0, metricType: dto.MetricType_COUNTER},
222 | 		{labels: labels, value: 0, metricType: dto.MetricType_COUNTER},
223 | 	}
224 | 	for _, expect := range workerCoreMetricResults {
225 | 		got := readMetric(<-ch)
226 | 		assert.Equal(t, expect, got, "Wrong worker core stats: %d")
227 | 	}
228 | 
229 | 	// Drain
230 | 	for i := 0; i < len(workerMetricResults)+len(workerAppMetricResults)+len(workerCoreMetricResults); i++ {
231 | 		readMetric(<-ch)
232 | 	}
233 | 
234 | 	// caches
235 | 	labels = labelMap{"stats_uri": s.URL, "name": "cache_1"}
236 | 	cacheMetricResults := []MetricResult{
237 | 		{labels: labels, value: 56614, metricType: dto.MetricType_COUNTER},   // hits
238 | 		{labels: labels, value: 4931570, metricType: dto.MetricType_COUNTER}, // misses
239 | 		{labels: labels, value: 0, metricType: dto.MetricType_COUNTER},       // full
240 | 
241 | 		{labels: labels, value: 39, metricType: dto.MetricType_GAUGE},   // items
242 | 		{labels: labels, value: 2000, metricType: dto.MetricType_GAUGE}, // max_items
243 | 	}
244 | 	for _, expect := range cacheMetricResults {
245 | 		got := readMetric(<-ch)
246 | 		assert.Equal(t, expect, got, "Wrong cache stats: %d")
247 | 	}
248 | 
249 | 	// Drain
250 | 	for i := 0; i < len(cacheMetricResults); i++ {
251 | 		readMetric(<-ch)
252 | 	}
253 | 
254 | 	// total_scrapes
255 | 	expected := MetricResult{labels: labelMap{}, value: 1, metricType: dto.MetricType_COUNTER}
256 | 	got := readMetric(<-ch)
257 | 	assert.Equal(t, expected, got)
258 | 
259 | 	// error
260 | 	expected = MetricResult{labels: labelMap{}, value: 0, metricType: dto.MetricType_GAUGE}
261 | 	got = readMetric(<-ch)
262 | 	assert.Equal(t, expected, got)
263 | 
264 | 	// scrape duration
265 | 	expected = MetricResult{labels: labelMap{}, value: 0, metricType: dto.MetricType_SUMMARY}
266 | 	got = readMetric(<-ch)
267 | 	assert.Equal(t, expected, got)
268 | 
269 | 	// scrape_errors
270 | 	expected = MetricResult{labels: labelMap{}, value: 0, metricType: dto.MetricType_COUNTER}
271 | 	got = readMetric(<-ch)
272 | 	assert.Equal(t, expected, got)
273 | 
274 | 	// uwsgi_up
275 | 	expected = MetricResult{labels: labelMap{}, value: 1, metricType: dto.MetricType_GAUGE}
276 | 	got = readMetric(<-ch)
277 | 	assert.Equal(t, expected, got)
278 | }
279 | 


--------------------------------------------------------------------------------
/pkg/collector/mockserver_test.go:
--------------------------------------------------------------------------------
  1 | // Copyright 2013 The Go Authors. All rights reserved.
  2 | // Use of this source code is governed by a BSD-style
  3 | // license that can be found in the LICENSE file.
  4 | 
  5 | package collector
  6 | 
  7 | import (
  8 | 	"fmt"
  9 | 	"net"
 10 | 	"os"
 11 | 	"sync"
 12 | 	"testing"
 13 | 	"time"
 14 | )
 15 | 
 16 | // someTimeout is used just to test that net.Conn implementations
 17 | // don't explode when their SetFooDeadline methods are called.
 18 | // It isn't actually used for testing timeouts.
 19 | const someTimeout = 10 * time.Second
 20 | 
 21 | // testUnixAddr uses os.CreateTemp to get a name that is unique.
 22 | // It also uses /tmp directory in case it is prohibited to create UNIX
 23 | // sockets in TMPDIR.
 24 | func testUnixAddr() string {
 25 | 	f, err := os.CreateTemp("", "uwsgi-exporter-test")
 26 | 	if err != nil {
 27 | 		panic(err)
 28 | 	}
 29 | 	addr := f.Name()
 30 | 	f.Close()
 31 | 	os.Remove(addr)
 32 | 	return addr
 33 | }
 34 | 
 35 | func newLocalListener(network string) (net.Listener, error) {
 36 | 	switch network {
 37 | 	case "tcp":
 38 | 		return net.Listen("tcp4", "127.0.0.1:0")
 39 | 	case "unix":
 40 | 		return net.Listen(network, testUnixAddr())
 41 | 	default:
 42 | 		return nil, fmt.Errorf("%s is not supported", network)
 43 | 	}
 44 | }
 45 | 
 46 | type localServer struct {
 47 | 	mu sync.RWMutex
 48 | 	net.Listener
 49 | 
 50 | 	done chan struct{} // signal that indicates server stopped
 51 | }
 52 | 
 53 | func (ls *localServer) buildup(handler func(*localServer, net.Listener)) {
 54 | 	go func() {
 55 | 		handler(ls, ls.Listener)
 56 | 		close(ls.done)
 57 | 	}()
 58 | }
 59 | 
 60 | func (ls *localServer) teardown() error {
 61 | 	ls.mu.Lock()
 62 | 	defer ls.mu.Unlock()
 63 | 
 64 | 	if ls.Listener != nil {
 65 | 		network := ls.Listener.Addr().Network()
 66 | 		address := ls.Listener.Addr().String()
 67 | 		ls.Listener.Close()
 68 | 		<-ls.done
 69 | 		ls.Listener = nil
 70 | 		if network == "unix" {
 71 | 			os.Remove(address)
 72 | 		}
 73 | 	}
 74 | 	return nil
 75 | }
 76 | 
 77 | func newLocalServer(t *testing.T, network string) (*localServer, error) {
 78 | 	ln, err := newLocalListener(network)
 79 | 	if err != nil {
 80 | 		return nil, err
 81 | 	}
 82 | 
 83 | 	s := &localServer{Listener: ln, done: make(chan struct{})}
 84 | 	t.Cleanup(func() {
 85 | 		s.teardown()
 86 | 	})
 87 | 	return s, nil
 88 | }
 89 | 
 90 | func justWriteHandler(content []byte, ch chan<- error) func(*localServer, net.Listener) {
 91 | 	return func(ls *localServer, ln net.Listener) {
 92 | 		defer close(ch)
 93 | 
 94 | 		switch ln := ln.(type) {
 95 | 		case *net.UnixListener:
 96 | 			ln.SetDeadline(time.Now().Add(someTimeout))
 97 | 		case *net.TCPListener:
 98 | 			ln.SetDeadline(time.Now().Add(someTimeout))
 99 | 		}
100 | 		c, err := ln.Accept()
101 | 		if err != nil {
102 | 			ch <- err
103 | 			return
104 | 		}
105 | 		defer c.Close()
106 | 
107 | 		network := ln.Addr().Network()
108 | 		if c.LocalAddr().Network() != network || c.RemoteAddr().Network() != network {
109 | 			ch <- fmt.Errorf("got %v->%v; expected %v->%v", c.LocalAddr().Network(), c.RemoteAddr().Network(), network, network)
110 | 			return
111 | 		}
112 | 
113 | 		c.SetDeadline(time.Now().Add(someTimeout))
114 | 
115 | 		if _, err := c.Write(content); err != nil {
116 | 			ch <- err
117 | 			return
118 | 		}
119 | 	}
120 | }
121 | 


--------------------------------------------------------------------------------
/pkg/collector/reader.go:
--------------------------------------------------------------------------------
 1 | package collector
 2 | 
 3 | import (
 4 | 	"context"
 5 | 	"fmt"
 6 | 	"net"
 7 | 	"net/url"
 8 | 	"strings"
 9 | )
10 | 
11 | // StatsReader reads uwsgi stats from specified uri.
12 | type StatsReader interface {
13 | 	Read(ctx context.Context) (*UwsgiStats, error)
14 | }
15 | 
16 | // StatsReaderFunc is prototype for new stats reader
17 | type StatsReaderFunc func(u *url.URL) StatsReader
18 | 
19 | var statsReaderFuncRegistry = make(map[string]StatsReaderFunc)
20 | 
21 | func registerStatsReaderFunc(scheme string, creator StatsReaderFunc) {
22 | 	statsReaderFuncRegistry[scheme] = creator
23 | }
24 | 
25 | type statsReaderOptions struct {
26 | 	requireSafeScheme bool
27 | }
28 | 
29 | type StatsReaderOption func(*statsReaderOptions)
30 | 
31 | func WithRequireSafeScheme(safe bool) StatsReaderOption {
32 | 	return func(opts *statsReaderOptions) {
33 | 		opts.requireSafeScheme = safe
34 | 	}
35 | }
36 | 
37 | // NewStatsReader creates a StatsReader according to uri.
38 | func NewStatsReader(uri string, opts ...StatsReaderOption) (StatsReader, error) {
39 | 	options := &statsReaderOptions{}
40 | 	for _, opt := range opts {
41 | 		opt(options)
42 | 	}
43 | 
44 | 	u, err := url.Parse(uri)
45 | 	if err != nil {
46 | 		return nil, fmt.Errorf("failed to parse uri: %w", err)
47 | 	}
48 | 
49 | 	if !strings.Contains(uri, "://") && u.Host == "" {
50 | 		// Assume it's a http uri and parse again
51 | 		u, err = url.Parse("http://" + uri)
52 | 		if err != nil {
53 | 			return nil, fmt.Errorf("failed to parse uri (again): %w", err)
54 | 		}
55 | 	}
56 | 
57 | 	// If in safe mode, we only accept tcp, http, and https
58 | 	if options.requireSafeScheme {
59 | 		switch u.Scheme {
60 | 		case "tcp", "http", "https":
61 | 		default:
62 | 			return nil, fmt.Errorf("unsafe scheme: %s", u.Scheme)
63 | 		}
64 | 	}
65 | 
66 | 	fn := statsReaderFuncRegistry[u.Scheme]
67 | 	if fn == nil {
68 | 		return nil, fmt.Errorf("incompatible scheme: %s", u.Scheme)
69 | 	}
70 | 
71 | 	return fn(u), nil
72 | }
73 | 
74 | func setDeadLine(ctx context.Context, conn net.Conn) error {
75 | 	deadline, ok := ctx.Deadline()
76 | 	if !ok {
77 | 		return nil
78 | 	}
79 | 
80 | 	return conn.SetDeadline(deadline)
81 | }
82 | 


--------------------------------------------------------------------------------
/pkg/collector/reader_file.go:
--------------------------------------------------------------------------------
 1 | package collector
 2 | 
 3 | import (
 4 | 	"context"
 5 | 	"fmt"
 6 | 	"net/url"
 7 | 	"os"
 8 | )
 9 | 
10 | type fileStatsReader struct {
11 | 	filename string
12 | }
13 | 
14 | func init() {
15 | 	registerStatsReaderFunc("file", newFileStatsReader)
16 | }
17 | 
18 | func newFileStatsReader(u *url.URL) StatsReader {
19 | 	return &fileStatsReader{
20 | 		filename: u.Path,
21 | 	}
22 | }
23 | 
24 | func (r *fileStatsReader) Read(_ context.Context) (*UwsgiStats, error) {
25 | 	f, err := os.Open(r.filename)
26 | 	if err != nil {
27 | 		return nil, fmt.Errorf("unable to open file: %w", err)
28 | 	}
29 | 	defer f.Close()
30 | 
31 | 	uwsgiStats, err := parseUwsgiStatsFromIO(f)
32 | 	if err != nil {
33 | 		return nil, fmt.Errorf("unable to unmarshal JSON: %w", err)
34 | 	}
35 | 
36 | 	return uwsgiStats, nil
37 | }
38 | 


--------------------------------------------------------------------------------
/pkg/collector/reader_file_test.go:
--------------------------------------------------------------------------------
 1 | package collector
 2 | 
 3 | import (
 4 | 	"context"
 5 | 	"reflect"
 6 | 	"testing"
 7 | 
 8 | 	"github.com/alecthomas/assert/v2"
 9 | )
10 | 
11 | func TestFileStatsReader_Read(t *testing.T) {
12 | 	t.Parallel()
13 | 
14 | 	uri := "file://" + sampleUwsgiStatsFileName
15 | 
16 | 	reader, err := NewStatsReader(uri)
17 | 	assert.NoError(t, err)
18 | 
19 | 	assert.Equal(t, reflect.TypeOf(&fileStatsReader{}).String(), reflect.TypeOf(reader).String())
20 | 
21 | 	ctx, cancel := context.WithTimeout(context.Background(), someTimeout)
22 | 	defer cancel()
23 | 
24 | 	uwsgiStats, err := reader.Read(ctx)
25 | 	assert.NoError(t, err)
26 | 
27 | 	assert.Equal(t, uwsgiStats.Version, "2.0.12")
28 | }
29 | 


--------------------------------------------------------------------------------
/pkg/collector/reader_http.go:
--------------------------------------------------------------------------------
 1 | package collector
 2 | 
 3 | import (
 4 | 	"context"
 5 | 	"fmt"
 6 | 	"net/http"
 7 | 	"net/url"
 8 | )
 9 | 
10 | type httpStatsReader struct {
11 | 	uri string
12 | 
13 | 	client *http.Client
14 | }
15 | 
16 | func init() {
17 | 	registerStatsReaderFunc("http", newHTTPStatsReader)
18 | 	registerStatsReaderFunc("https", newHTTPStatsReader)
19 | }
20 | 
21 | func newHTTPStatsReader(u *url.URL) StatsReader {
22 | 	return &httpStatsReader{
23 | 		uri:    u.String(),
24 | 		client: &http.Client{},
25 | 	}
26 | }
27 | 
28 | func (r *httpStatsReader) Read(ctx context.Context) (*UwsgiStats, error) {
29 | 	req, err := http.NewRequestWithContext(ctx, http.MethodGet, r.uri, nil)
30 | 	if err != nil {
31 | 		return nil, fmt.Errorf("error creating request: %w", err)
32 | 	}
33 | 
34 | 	resp, err := r.client.Do(req)
35 | 	if err != nil {
36 | 		return nil, fmt.Errorf("error querying uwsgi stats: %w", err)
37 | 	}
38 | 	defer resp.Body.Close()
39 | 
40 | 	uwsgiStats, err := parseUwsgiStatsFromIO(resp.Body)
41 | 	if err != nil {
42 | 		return nil, fmt.Errorf("failed to parse uwsgi stats: %w", err)
43 | 	}
44 | 	return uwsgiStats, nil
45 | }
46 | 


--------------------------------------------------------------------------------
/pkg/collector/reader_http_test.go:
--------------------------------------------------------------------------------
 1 | package collector
 2 | 
 3 | import (
 4 | 	"context"
 5 | 	"reflect"
 6 | 	"testing"
 7 | 
 8 | 	"github.com/alecthomas/assert/v2"
 9 | )
10 | 
11 | func TestHTTPStatsReader_Read(t *testing.T) {
12 | 	t.Parallel()
13 | 
14 | 	s := newUwsgiStatsServer(sampleUwsgiStatsJSON)
15 | 	defer s.Close()
16 | 
17 | 	uri := s.URL
18 | 	reader, err := NewStatsReader(uri)
19 | 	assert.NoError(t, err)
20 | 
21 | 	assert.Equal(t, reflect.TypeOf(&httpStatsReader{}).String(), reflect.TypeOf(reader).String())
22 | 
23 | 	ctx, cancel := context.WithTimeout(context.Background(), someTimeout)
24 | 	defer cancel()
25 | 
26 | 	uwsgiStats, err := reader.Read(ctx)
27 | 	assert.NoError(t, err)
28 | 
29 | 	assert.Equal(t, "2.0.12", uwsgiStats.Version)
30 | }
31 | 


--------------------------------------------------------------------------------
/pkg/collector/reader_tcp.go:
--------------------------------------------------------------------------------
 1 | package collector
 2 | 
 3 | import (
 4 | 	"context"
 5 | 	"fmt"
 6 | 	"net/url"
 7 | )
 8 | 
 9 | type tcpStatsReader struct {
10 | 	host string
11 | }
12 | 
13 | func init() {
14 | 	registerStatsReaderFunc("tcp", newTCPStatsReader)
15 | }
16 | 
17 | func newTCPStatsReader(u *url.URL) StatsReader {
18 | 	return &tcpStatsReader{
19 | 		host: u.Host,
20 | 	}
21 | }
22 | 
23 | func (r *tcpStatsReader) Read(ctx context.Context) (*UwsgiStats, error) {
24 | 	d := newDialer()
25 | 	conn, err := d.DialContext(ctx, "tcp", r.host)
26 | 	if err != nil {
27 | 		return nil, fmt.Errorf("error reading stats from tcp: %w", err)
28 | 	}
29 | 	defer conn.Close()
30 | 
31 | 	err = setDeadLine(ctx, conn)
32 | 	if err != nil {
33 | 		return nil, fmt.Errorf("failed to set deadline: %w", err)
34 | 	}
35 | 
36 | 	uwsgiStats, err := parseUwsgiStatsFromIO(conn)
37 | 	if err != nil {
38 | 		return nil, fmt.Errorf("failed to unmarshal JSON: %w", err)
39 | 	}
40 | 	return uwsgiStats, nil
41 | }
42 | 


--------------------------------------------------------------------------------
/pkg/collector/reader_tcp_test.go:
--------------------------------------------------------------------------------
 1 | package collector
 2 | 
 3 | import (
 4 | 	"context"
 5 | 	"reflect"
 6 | 	"testing"
 7 | 
 8 | 	"github.com/alecthomas/assert/v2"
 9 | )
10 | 
11 | func TestTCPStatsReader_Read(t *testing.T) {
12 | 	t.Parallel()
13 | 
14 | 	// Setup a local TCP server for testing
15 | 	ls, err := newLocalServer(t, "tcp")
16 | 	assert.NoError(t, err)
17 | 
18 | 	ch := make(chan error, 1)
19 | 
20 | 	ls.buildup(justWriteHandler(sampleUwsgiStatsJSON, ch))
21 | 
22 | 	uri := "tcp://" + ls.Listener.Addr().String()
23 | 	reader, err := NewStatsReader(uri)
24 | 	assert.NoError(t, err)
25 | 
26 | 	assert.Equal(t, reflect.TypeOf(&tcpStatsReader{}).String(), reflect.TypeOf(reader).String())
27 | 
28 | 	ctx, cancel := context.WithTimeout(context.Background(), someTimeout)
29 | 	defer cancel()
30 | 
31 | 	uwsgiStats, err := reader.Read(ctx)
32 | 	assert.NoError(t, err)
33 | 
34 | 	assert.Equal(t, "2.0.12", uwsgiStats.Version)
35 | 
36 | 	for err := range ch {
37 | 		assert.NoError(t, err)
38 | 	}
39 | }
40 | 


--------------------------------------------------------------------------------
/pkg/collector/reader_test.go:
--------------------------------------------------------------------------------
 1 | package collector
 2 | 
 3 | import (
 4 | 	"testing"
 5 | 
 6 | 	"github.com/alecthomas/assert/v2"
 7 | )
 8 | 
 9 | func TestNewStatsReaderNil(t *testing.T) {
10 | 	t.Parallel()
11 | 
12 | 	unknownUris := []string{
13 | 		"abc://xxx",
14 | 		"def://yyy",
15 | 		"socks://vvvv",
16 | 	}
17 | 
18 | 	for _, uri := range unknownUris {
19 | 		reader, err := NewStatsReader(uri)
20 | 		assert.Equal(t, nil, reader)
21 | 		assert.Error(t, err)
22 | 	}
23 | }
24 | 
25 | func TestNewStatsReader_Safe(t *testing.T) {
26 | 	testCases := []struct {
27 | 		name    string
28 | 		uri     string
29 | 		wantErr bool
30 | 	}{
31 | 		{
32 | 			name: "tcp",
33 | 			uri:  "tcp://xxx:123",
34 | 		},
35 | 		{
36 | 			name: "http",
37 | 			uri:  "http://10.1.1.2:1234",
38 | 		},
39 | 		{
40 | 			name: "https",
41 | 			uri:  "https://example.com:8443",
42 | 		},
43 | 		{
44 | 			name:    "file",
45 | 			uri:     "file:///tmp/uwsgi.json",
46 | 			wantErr: true,
47 | 		},
48 | 		{
49 | 			name:    "unix",
50 | 			uri:     "unix:///tmp/uwsgi.sock",
51 | 			wantErr: true,
52 | 		},
53 | 	}
54 | 
55 | 	for _, tc := range testCases {
56 | 		tc := tc
57 | 		t.Run(tc.name, func(t *testing.T) {
58 | 			t.Parallel()
59 | 			_, err := NewStatsReader(tc.uri, WithRequireSafeScheme(true))
60 | 			if tc.wantErr {
61 | 				assert.Error(t, err)
62 | 			} else {
63 | 				assert.NoError(t, err)
64 | 			}
65 | 		})
66 | 	}
67 | }
68 | 


--------------------------------------------------------------------------------
/pkg/collector/reader_unix.go:
--------------------------------------------------------------------------------
 1 | package collector
 2 | 
 3 | import (
 4 | 	"context"
 5 | 	"fmt"
 6 | 	"net/url"
 7 | )
 8 | 
 9 | type unixStatsReader struct {
10 | 	filename string
11 | }
12 | 
13 | func init() {
14 | 	registerStatsReaderFunc("unix", newUnixStatsReader)
15 | }
16 | 
17 | func newUnixStatsReader(u *url.URL) StatsReader {
18 | 	return &unixStatsReader{
19 | 		filename: u.Path,
20 | 	}
21 | }
22 | 
23 | func (r *unixStatsReader) Read(ctx context.Context) (*UwsgiStats, error) {
24 | 	d := newDialer()
25 | 	conn, err := d.DialContext(ctx, "unix", r.filename)
26 | 	if err != nil {
27 | 		return nil, fmt.Errorf("error reading stats from unix socket %s: %w", r.filename, err)
28 | 	}
29 | 	defer conn.Close()
30 | 
31 | 	err = setDeadLine(ctx, conn)
32 | 	if err != nil {
33 | 		return nil, fmt.Errorf("failed to set deadline: %w", err)
34 | 	}
35 | 
36 | 	uwsgiStats, err := parseUwsgiStatsFromIO(conn)
37 | 	if err != nil {
38 | 		return nil, fmt.Errorf("failed to unmarshal JSON: %w", err)
39 | 	}
40 | 	return uwsgiStats, nil
41 | }
42 | 


--------------------------------------------------------------------------------
/pkg/collector/reader_unix_test.go:
--------------------------------------------------------------------------------
 1 | package collector
 2 | 
 3 | import (
 4 | 	"context"
 5 | 	"reflect"
 6 | 	"testing"
 7 | 
 8 | 	"github.com/alecthomas/assert/v2"
 9 | )
10 | 
11 | func TestUnixStatsReader_Read(t *testing.T) {
12 | 	t.Parallel()
13 | 
14 | 	// Setup a local UDS server for testing
15 | 	ls, err := newLocalServer(t, "unix")
16 | 	assert.NoError(t, err)
17 | 
18 | 	ch := make(chan error, 1)
19 | 
20 | 	ls.buildup(justWriteHandler(sampleUwsgiStatsJSON, ch))
21 | 
22 | 	uri := "unix://" + ls.Listener.Addr().String()
23 | 	reader, err := NewStatsReader(uri)
24 | 	assert.NoError(t, err)
25 | 
26 | 	assert.Equal(t, reflect.TypeOf(&unixStatsReader{}).String(), reflect.TypeOf(reader).String())
27 | 
28 | 	ctx, cancel := context.WithTimeout(context.Background(), someTimeout)
29 | 	defer cancel()
30 | 
31 | 	uwsgiStats, err := reader.Read(ctx)
32 | 	assert.NoError(t, err)
33 | 
34 | 	assert.Equal(t, "2.0.12", uwsgiStats.Version)
35 | 
36 | 	for err := range ch {
37 | 		assert.NoError(t, err)
38 | 	}
39 | }
40 | 


--------------------------------------------------------------------------------
/pkg/collector/stats.go:
--------------------------------------------------------------------------------
  1 | package collector
  2 | 
  3 | import (
  4 | 	"encoding/json"
  5 | 	"io"
  6 | )
  7 | 
  8 | type UwsgiSocket struct {
  9 | 	Name       string `json:"name"`
 10 | 	Proto      string `json:"proto"`
 11 | 	Queue      int    `json:"queue"`
 12 | 	MaxQueue   int    `json:"max_queue"`
 13 | 	Shared     int    `json:"shared"`
 14 | 	CanOffload int    `json:"can_offload"`
 15 | }
 16 | 
 17 | type UwsgiWorker struct {
 18 | 	ID            int         `json:"id"`
 19 | 	PID           int         `json:"pid"`
 20 | 	Accepting     int         `json:"accepting"`
 21 | 	Requests      int         `json:"requests"`
 22 | 	DeltaRequests int         `json:"delta_requests"`
 23 | 	Exceptions    int         `json:"exceptions"`
 24 | 	HarakiriCount int         `json:"harakiri_count"`
 25 | 	Signals       int         `json:"signals"`
 26 | 	SignalQueue   int         `json:"signal_queue"`
 27 | 	Status        string      `json:"status"`
 28 | 	RSS           int         `json:"rss"`
 29 | 	VSZ           int         `json:"vsz"`
 30 | 	RunningTime   int64       `json:"running_time"`
 31 | 	LastSpawn     int64       `json:"last_spawn"`
 32 | 	RespawnCount  int         `json:"respawn_count"`
 33 | 	TX            int         `json:"tx"`
 34 | 	AvgRt         int         `json:"avg_rt"`
 35 | 	Apps          []UwsgiApp  `json:"apps"`
 36 | 	Cores         []UwsgiCore `json:"cores"`
 37 | }
 38 | 
 39 | type UwsgiApp struct {
 40 | 	ID          int    `json:"id"`
 41 | 	Modifier1   int    `json:"modifier1"`
 42 | 	MountPoint  string `json:"mountpoint"`
 43 | 	StartupTime int    `json:"startup_time"`
 44 | 	Requests    int    `json:"requests"`
 45 | 	Exceptions  int    `json:"exceptions"`
 46 | 	Chdir       string `json:"chdir"`
 47 | }
 48 | 
 49 | type UwsgiCore struct {
 50 | 	ID                int      `json:"id"`
 51 | 	Requests          int      `json:"requests"`
 52 | 	StaticRequests    int      `json:"static_requests"`
 53 | 	RoutedRequests    int      `json:"routed_requests"`
 54 | 	OffloadedRequests int      `json:"offloaded_requests"`
 55 | 	WriteErrors       int      `json:"write_errors"`
 56 | 	ReadErrors        int      `json:"read_errors"`
 57 | 	InRequest         int      `json:"in_request"`
 58 | 	Vars              []string `json:"vars"`
 59 | }
 60 | 
 61 | type UwsgiCache struct {
 62 | 	Hits           int    `json:"hits"`
 63 | 	Misses         int    `json:"miss"`
 64 | 	Items          int    `json:"items"`
 65 | 	MaxItems       int    `json:"max_items"`
 66 | 	Full           int    `json:"full"`
 67 | 	Hash           string `json:"hash"`
 68 | 	HashSize       int    `json:"hashsize"`
 69 | 	KeySize        int    `json:"keysize"`
 70 | 	Blocks         int    `json:"blocks"`
 71 | 	BlockSize      int    `json:"blocksize"`
 72 | 	LastModifiedAt int    `json:"last_modified_at"`
 73 | 	Name           string `json:"name"`
 74 | }
 75 | 
 76 | type UwsgiStats struct {
 77 | 	Version           string        `json:"version"`
 78 | 	ListenQueue       int           `json:"listen_queue"`
 79 | 	ListenQueueErrors int           `json:"listen_queue_errors"`
 80 | 	SignalQueue       int           `json:"signal_queue"`
 81 | 	Load              int           `json:"load"`
 82 | 	PID               int           `json:"pid"`
 83 | 	UID               int           `json:"uid"`
 84 | 	GID               int           `json:"gid"`
 85 | 	CWD               string        `json:"cwd"`
 86 | 	Sockets           []UwsgiSocket `json:"sockets"`
 87 | 	Workers           []UwsgiWorker `json:"workers"`
 88 | 	Caches            []UwsgiCache  `json:"caches"`
 89 | }
 90 | 
 91 | func parseUwsgiStatsFromIO(r io.Reader) (*UwsgiStats, error) {
 92 | 	var uwsgiStats UwsgiStats
 93 | 	decoder := json.NewDecoder(r)
 94 | 	err := decoder.Decode(&uwsgiStats)
 95 | 	if err != nil {
 96 | 		return nil, err
 97 | 	}
 98 | 	return &uwsgiStats, nil
 99 | }
100 | 


--------------------------------------------------------------------------------
/pkg/collector/testdata/sample.json:
--------------------------------------------------------------------------------
  1 | {
  2 |   "version": "2.0.12",
  3 |   "listen_queue": 0,
  4 |   "listen_queue_errors": 0,
  5 |   "signal_queue": 0,
  6 |   "load": 0,
  7 |   "pid": 1,
  8 |   "uid": 1000,
  9 |   "gid": 0,
 10 |   "cwd": "/regent",
 11 |   "locks": [{
 12 |     "user 0": 0
 13 |   }, {
 14 |     "signal": 0
 15 |   }, {
 16 |     "filemon": 0
 17 |   }, {
 18 |     "timer": 0
 19 |   }, {
 20 |     "rbtimer": 0
 21 |   }, {
 22 |     "cron": 0
 23 |   }, {
 24 |     "rpc": 0
 25 |   }, {
 26 |     "snmp": 0
 27 |   }],
 28 |   "caches":[{
 29 |     "name":"cache_1",
 30 |     "hash":"djb33x",
 31 |     "hashsize":65536,
 32 |     "keysize":2048,
 33 |     "max_items":2000,
 34 |     "blocks":2000,
 35 |     "blocksize":65536,
 36 |     "items":39,
 37 |     "hits":56614,
 38 |     "miss":4931570,
 39 |     "full":0,
 40 |     "last_modified_at":0
 41 |   }, {
 42 |     "name":"cache_2",
 43 |     "hash":"djb33x",
 44 |     "hashsize":65536,
 45 |     "keysize":2048,
 46 |     "max_items":1000,
 47 |     "blocks":1000,
 48 |     "blocksize":65536,
 49 |     "items":0,
 50 |     "hits":5,
 51 |     "miss":9251,
 52 |     "full":0,
 53 |     "last_modified_at":0 }],
 54 |   "sockets": [{
 55 |     "name": "127.0.0.1:36577",
 56 |     "proto": "uwsgi",
 57 |     "queue": 0,
 58 |     "max_queue": 100,
 59 |     "shared": 0,
 60 |     "can_offload": 0
 61 |   }, {
 62 |     "name": "127.0.0.1:36577",
 63 |     "proto": "uwsgi",
 64 |     "queue": 0,
 65 |     "max_queue": 0,
 66 |     "shared": 0,
 67 |     "can_offload": 0}],
 68 |   "workers": [{
 69 |     "id": 1,
 70 |     "pid": 9,
 71 |     "accepting": 1,
 72 |     "requests": 0,
 73 |     "delta_requests": 0,
 74 |     "exceptions": 0,
 75 |     "harakiri_count": 0,
 76 |     "signals": 0,
 77 |     "signal_queue": 0,
 78 |     "status": "idle",
 79 |     "rss": 0,
 80 |     "vsz": 0,
 81 |     "running_time": 0,
 82 |     "last_spawn": 1457410597,
 83 |     "respawn_count": 1,
 84 |     "tx": 0,
 85 |     "avg_rt": 0,
 86 |     "apps": [{
 87 |       "id": 0,
 88 |       "modifier1": 0,
 89 |       "mountpoint": "",
 90 |       "startup_time": 0,
 91 |       "requests": 0,
 92 |       "exceptions": 0,
 93 |       "chdir": ""
 94 |     }],
 95 |     "cores": [{
 96 |       "id": 0,
 97 |       "requests": 0,
 98 |       "static_requests": 0,
 99 |       "routed_requests": 0,
100 |       "offloaded_requests": 0,
101 |       "write_errors": 0,
102 |       "read_errors": 0,
103 |       "in_request": 0,
104 |       "vars": []
105 |     }]
106 |   }, {
107 |     "id": 2,
108 |     "pid": 10,
109 |     "accepting": 1,
110 |     "requests": 0,
111 |     "delta_requests": 0,
112 |     "exceptions": 0,
113 |     "harakiri_count": 0,
114 |     "signals": 0,
115 |     "signal_queue": 0,
116 |     "status": "idle",
117 |     "rss": 0,
118 |     "vsz": 0,
119 |     "running_time": 0,
120 |     "last_spawn": 1457410597,
121 |     "respawn_count": 1,
122 |     "tx": 0,
123 |     "avg_rt": 0,
124 |     "apps": [{
125 |       "id": 0,
126 |       "modifier1": 0,
127 |       "mountpoint": "",
128 |       "startup_time": 0,
129 |       "requests": 0,
130 |       "exceptions": 0,
131 |       "chdir": ""
132 |     }],
133 |     "cores": [{
134 |       "id": 0,
135 |       "requests": 0,
136 |       "static_requests": 0,
137 |       "routed_requests": 0,
138 |       "offloaded_requests": 0,
139 |       "write_errors": 0,
140 |       "read_errors": 0,
141 |       "in_request": 0,
142 |       "vars": []
143 |     }]
144 |   }]
145 | }
146 | 


--------------------------------------------------------------------------------
/pkg/collector/testdata/wrong.json:
--------------------------------------------------------------------------------
1 | {
2 |   "version": "2.0.12",
3 |   "listen_queue": 0,
4 |   "listen_queue_errors": 0,
5 | 


--------------------------------------------------------------------------------
/scripts/errcheck_excludes.txt:
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 1 | // Don't flag lines such as "io.Copy(ioutil.Discard, resp.Body)".
 2 | io.Copy
 3 | // The next two are used in HTTP handlers, any error is handled by the server itself.
 4 | io.WriteString
 5 | (net/http.ResponseWriter).Write
 6 | // No need to check for errors on server's shutdown.
 7 | (*net/http.Server).Shutdown
 8 | 
 9 | // Never check for logger errors.
10 | (github.com/go-kit/log.Logger).Log
11 | 


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