├── .dockerignore ├── .github ├── dependabot.yml └── workflows │ ├── build.yml │ └── release.yaml ├── .gitignore ├── Cargo.lock ├── Cargo.toml ├── LICENSE ├── README.md ├── build.sh ├── docker └── Dockerfile ├── docs ├── screenshot-1.png ├── screenshot-2.png └── svg-demo │ ├── example.svg │ ├── screen-1.png │ ├── screen-2.png │ ├── screen-3.png │ ├── screen-4.png │ └── screen-5.png ├── examples ├── dynamic │ ├── config.yaml │ ├── monitor.d │ │ ├── router │ │ │ ├── config.yaml │ │ │ └── test.sh │ │ ├── server │ │ │ ├── config.yaml │ │ │ └── test.sh │ │ └── timeout │ │ │ ├── config.yaml │ │ │ └── test.sh │ └── static │ │ └── index.html ├── group │ ├── config.yaml │ ├── monitor.d │ │ └── group │ │ │ ├── config.yaml │ │ │ └── test.sh │ └── static │ │ └── index.html ├── metadata │ ├── config.yaml │ ├── monitor.d │ │ ├── metadata1 │ │ │ ├── config.yaml │ │ │ └── test.sh │ │ ├── metadata2 │ │ │ ├── config.yaml │ │ │ └── test.sh │ │ └── metadata3 │ │ │ ├── config.yaml │ │ │ └── test.sh │ └── static │ │ └── index.html └── simple_network │ ├── config.yaml │ ├── monitor.d │ ├── router │ │ ├── config.yaml │ │ └── test.sh │ ├── server │ │ ├── config.yaml │ │ └── test.sh │ └── timeout │ │ ├── config.yaml │ │ └── test.sh │ └── static │ └── index.html └── src ├── config ├── args.rs ├── mod.rs └── structs.rs ├── css.rs ├── http.rs ├── interpolate.rs ├── main.rs ├── monitor.rs ├── status.rs ├── testcases ├── group_complete │ ├── config.yaml │ └── test.sh ├── group_fail │ ├── config.yaml │ └── test.sh ├── group_incomplete │ ├── config.yaml │ └── test.sh ├── metadata_fail │ ├── config.yaml │ └── test.sh ├── metadata_success │ ├── config.yaml │ └── test.sh └── v1.yaml └── worker ├── linebuf.rs └── mod.rs /.dockerignore: -------------------------------------------------------------------------------- 1 | * 2 | -------------------------------------------------------------------------------- /.github/dependabot.yml: -------------------------------------------------------------------------------- 1 | version: 2 2 | updates: 3 | - package-ecosystem: cargo 4 | directory: "/" 5 | schedule: 6 | interval: daily 7 | open-pull-requests-limit: 10 8 | ignore: 9 | - dependency-name: tokio 10 | versions: 11 | - ">= 0.3.a, < 0.4" 12 | - dependency-name: serde 13 | versions: 14 | - 1.0.124 15 | - dependency-name: tokio 16 | versions: 17 | - 1.3.0 18 | - dependency-name: serde_yaml 19 | versions: 20 | - 0.8.16 21 | -------------------------------------------------------------------------------- /.github/workflows/build.yml: -------------------------------------------------------------------------------- 1 | # This is a basic workflow to help you get started with Actions 2 | 3 | name: CI 4 | 5 | # Controls when the action will run. Triggers the workflow on push or pull request 6 | # events but only for the master branch 7 | on: 8 | push: 9 | branches: [ master ] 10 | pull_request: 11 | branches: [ master ] 12 | 13 | # A workflow run is made up of one or more jobs that can run sequentially or in parallel 14 | jobs: 15 | # This workflow contains a single job called "build" 16 | build: 17 | # The type of runner that the job will run on 18 | runs-on: ubuntu-latest 19 | 20 | # Steps represent a sequence of tasks that will be executed as part of the job 21 | steps: 22 | # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it 23 | - uses: actions/checkout@v2 24 | - uses: actions-rs/toolchain@v1 25 | with: 26 | profile: minimal 27 | toolchain: stable 28 | override: true 29 | - uses: actions-rs/cargo@v1 30 | with: 31 | command: test 32 | 33 | -------------------------------------------------------------------------------- /.github/workflows/release.yaml: -------------------------------------------------------------------------------- 1 | on: 2 | push: 3 | # Sequence of patterns matched against refs/tags 4 | tags: 5 | - 'v*' # Push events to matching v*, i.e. v1.0, v20.15.10 6 | 7 | name: Upload Release Asset 8 | 9 | jobs: 10 | build: 11 | name: Upload Release Asset 12 | runs-on: ubuntu-latest 13 | steps: 14 | - name: Checkout code 15 | uses: actions/checkout@v2 16 | - name: Build project # This would actually build your project, using zip for an example artifact 17 | run: | 18 | cargo install cross 19 | cross build --release --target arm-unknown-linux-musleabi 20 | cross build --release --target arm-unknown-linux-musleabihf 21 | cross build --release --target aarch64-unknown-linux-musl 22 | cross build --release --target x86_64-unknown-linux-musl 23 | - name: Create Release 24 | id: create_release 25 | uses: actions/create-release@v1 26 | env: 27 | GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }} 28 | with: 29 | tag_name: ${{ github.ref }} 30 | release_name: Release ${{ github.ref }} 31 | draft: false 32 | prerelease: false 33 | - name: Upload Release Asset 34 | id: upload-release-asset-musleabi 35 | uses: actions/upload-release-asset@v1 36 | env: 37 | GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }} 38 | with: 39 | upload_url: ${{ steps.create_release.outputs.upload_url }} # This pulls from the CREATE RELEASE step above, referencing it's ID to get its outputs object, which include a `upload_url`. See this blog post for more info: https://jasonet.co/posts/new-features-of-github-actions/#passing-data-to-future-steps 40 | asset_path: ./target/arm-unknown-linux-musleabi/release/stylus 41 | asset_name: stylus_linux_arm 42 | asset_content_type: application/binary 43 | - name: Upload Release Asset 44 | id: upload-release-asset-musleabihf 45 | uses: actions/upload-release-asset@v1 46 | env: 47 | GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }} 48 | with: 49 | upload_url: ${{ steps.create_release.outputs.upload_url }} # This pulls from the CREATE RELEASE step above, referencing it's ID to get its outputs object, which include a `upload_url`. See this blog post for more info: https://jasonet.co/posts/new-features-of-github-actions/#passing-data-to-future-steps 50 | asset_path: ./target/arm-unknown-linux-musleabihf/release/stylus 51 | asset_name: stylus_linux_armhf 52 | asset_content_type: application/binary 53 | - name: Upload Release Asset 54 | id: upload-release-asset-aarch64 55 | uses: actions/upload-release-asset@v1 56 | env: 57 | GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }} 58 | with: 59 | upload_url: ${{ steps.create_release.outputs.upload_url }} # This pulls from the CREATE RELEASE step above, referencing it's ID to get its outputs object, which include a `upload_url`. See this blog post for more info: https://jasonet.co/posts/new-features-of-github-actions/#passing-data-to-future-steps 60 | asset_path: ./target/aarch64-unknown-linux-musl/release/stylus 61 | asset_name: stylus_linux_arm64 62 | asset_content_type: application/binary 63 | - name: Upload Release Asset 64 | id: upload-release-asset-x86_64 65 | uses: actions/upload-release-asset@v1 66 | env: 67 | GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }} 68 | with: 69 | upload_url: ${{ steps.create_release.outputs.upload_url }} # This pulls from the CREATE RELEASE step above, referencing it's ID to get its outputs object, which include a `upload_url`. 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description = "Stylus (style + status) is a lightweight status page for home infrastructure." 7 | license = "MIT" 8 | repository = "https://github.com/mmastrac/stylus" 9 | readme = "README.md" 10 | 11 | [dependencies] 12 | tokio = { version = "1.6", features = ["macros", "rt-multi-thread"] } 13 | warp = "0.3" 14 | derive_more = "0.99" 15 | serde = { version = "1", features = ["derive", "rc"] } 16 | serde_yaml = "0.9" 17 | serde_json = { version = "1", features = ["raw_value"] } 18 | serde-aux = "4" 19 | humantime-serde = "1.1.1" 20 | walkdir = "2.3.2" 21 | handlebars = "4.2.2" 22 | subprocess = "0.2.8" 23 | log = "0.4.17" 24 | env_logger = "0.10" 25 | itertools = "0.10" 26 | structopt = "0.3" 27 | structopt-flags = "0.3" 28 | keepcalm = { version = "0.3.5", features = ["serde"] } 29 | 30 | [profile.release] 31 | codegen-units = 1 32 | incremental = false 33 | -------------------------------------------------------------------------------- /LICENSE: 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We also recommend that a 185 | file or class name and description of purpose be included on the 186 | same "printed page" as the copyright notice for easier 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 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # stylus ![CI](https://github.com/mmastrac/stylus/workflows/CI/badge.svg?branch=master) [![crates.io](https://img.shields.io/crates/v/stylus.svg)](https://crates.io/crates/stylus) 2 | 3 | **Stylus** (_style + status_) is a lightweight status page for home infrastructure. Configure a set of bash scripts that test 4 | the various parts of your infrastructure, set up HTML/SVG with a diagram of your network, and stylus will 5 | generate you a dynamic stylesheet to give you a visual overview of the current state. 6 | 7 | Note that this project was originally written using deno, but was rewritten in Rust to support Raspberry Pis. The 8 | original deno source is available in the `deno` branch. 9 | 10 | ## Running 11 | 12 | [See the wiki page on running Stylus here](https://github.com/mmastrac/stylus/wiki/Running-Stylus). 13 | 14 | ## Theory of operation 15 | 16 | **Stylus** acts as a webserver with special endpoints and a status monitoring tool. 17 | 18 | The status monitoring portion is based around scripts, written in any shell scripting language you like. Each 19 | script is run on an interval, and if the script returns `0` that is considered "up" for a given service. If the 20 | service times out, or returns a non-zero error this is considered a soft ("yellow") or hard ("red") failure. 21 | 22 | The special endpoints available on the webserver are: 23 | 24 | * `/style.css`: A dynamically generated CSS file based on the current 25 | * `/status.json`: A JSON representation of the current state 26 | 27 | The `style.css` endpoint may be linked by a HTML or SVG file served from the `static` directory that is configured. If 28 | desired, the HTML page can dynamically refresh the CSS periodically using Javascript. See the included example for a 29 | sample of how this might work. 30 | 31 | ## Getting started 32 | 33 | The first step to get started is copying the example to a location you'd like to use to run your status monitoring 34 | scripts. For each of the servers you'd like to monitor, create a new subdirectory under `monitor.d` with the name of 35 | that server. 36 | 37 | Using a tool like [diagrams.net], create an SVG diagram of your network. Attach an SVG DOM attribute to the elements 38 | you'd like to style with status changes. If you're using [diagrams.net], this can be done using the `svgdata` plugin. 39 | Alternatively, you can use the automatic identifiers generated by your SVG editor as your monitoring identifiers. 40 | 41 | From the SVG you've generated, create CSS selectors and rules that will apply styles to the appropriate elements as 42 | statuses change. The SVG `fill` attribute is a good candidate to change, but ensure that you're using `!important` on 43 | all your rules to override the fill colors created by your SVG editor. 44 | 45 | ## Configuration 46 | 47 | Example `config.yaml` for a **Stylus** install. This configuration attaches metadata to the various states and has 48 | selectors that apply to both and HTML (for a status table) and CSS (for a status SVG image). 49 | 50 | ```yaml 51 | version: 1 52 | server: 53 | port: 8000 54 | static: static/ 55 | 56 | monitor: 57 | dir: monitor.d/ 58 | 59 | css: 60 | # Arbitrary metadata can be associated with the four states 61 | metadata: 62 | blank: 63 | color: "white" 64 | red: 65 | color: "#fa897b" 66 | yellow: 67 | color: "#ffdd94" 68 | green: 69 | color: "#d0e6a5" 70 | rules: 71 | # Multiple CSS rules with handlebars replacements are supported 72 | - selectors: "#{{monitor.id}}" 73 | declarations: " 74 | background-color: {{monitor.status.css.metadata.color}} !important; 75 | " 76 | ``` 77 | 78 | The monitors are configured by creating a subdirectory in the monitor directory (default `monitor.d/`) and 79 | placing a `config.yaml` in that monitor subdirectory. 80 | 81 | ```yaml 82 | # ID is optional and will be inferred from the directory 83 | id: router-1 84 | test: 85 | interval: 60s 86 | timeout: 30s 87 | command: test.sh 88 | ``` 89 | 90 | ## Test scripts 91 | 92 | The test scripts are usually pretty simple. Note that the docker container ships with a number of useful utilities, 93 | but you can consider manually installing additional packages (either creating an additional docker container or manually 94 | running alpine's `apk` tool inside the container) to handle your specific cases. 95 | 96 | ### Ping 97 | 98 | Unless you have a particularly lossy connection, a single ping should be enough to test whether a host is up: 99 | 100 | ```bash 101 | #!/bin/bash 102 | set -xeuf -o pipefail 103 | ping -c 1 8.8.8.8 104 | ``` 105 | 106 | ### cURL 107 | 108 | For hosts with services that may be up or down, you may want to use cURL to test whether the service itself 109 | is reachable. 110 | 111 | ```bash 112 | #!/bin/bash 113 | set -xeuf -o pipefail 114 | curl --retry 2 --max-time 5 --connect-timeout 5 http://192.168.1.1:9000 115 | ``` 116 | 117 | ### Advanced techniques 118 | 119 | Tools such as `jq`, `sed`, or `awk` can be used for more advanced tests (ie: APIs). If needed, ssh can be used to 120 | connect to hosts and remote tests can be executed. `snmpwalk` and `snmpget` can also be used to construct tests for 121 | devices that speak SNMP. 122 | 123 | ## Performance 124 | 125 | **Stylus** is very lightweight, both from a processing and memory perspective. 126 | 127 | On a Raspberry Pi 1B, **Stylus** uses less than 1% of CPU while refreshing CSS at a rate of 1/s. On a 2015 MacBook Pro, 128 | Stylus uses approximately 0.1% of a single core while actively refreshing. 129 | 130 | **Stylus** uses approxmately 2MB to monitor 15 services on a Raspberry Pi (according to [ps_mem](https://raw.githubusercontent.com/pixelb/ps_mem/master/ps_mem.py)). 131 | 132 | When not actively monitored, **Stylus** uses a nearly unmeasurable amount of CPU and is pretty much limited by how 133 | heavyweight your test scripts are. 134 | 135 | ## Screenshots 136 | 137 | ### Included example 138 | 139 | ![Screenshot](docs/screenshot-1.png) 140 | 141 | ### My personal network 142 | 143 | ![Screenshot](docs/screenshot-2.png) 144 | 145 | [diagrams.net]: https://app.diagrams.net/?splash=0&p=svgdata 146 | -------------------------------------------------------------------------------- /build.sh: -------------------------------------------------------------------------------- 1 | #!/bin/bash 2 | set -xeuf -o pipefail 3 | if [ "$#" != "1" ]; then 4 | echo "Usage: $0 " 5 | exit 1 6 | fi 7 | 8 | VERSION="$1" 9 | echo "Building Docker container for $VERSION..." 10 | 11 | docker build --no-cache --platform linux/arm/v6 \ 12 | --build-arg VERSION=$VERSION \ 13 | --build-arg BINARYPLATFORM=linux_arm \ 14 | --build-arg BUILDPLATFORM=arm32v6 \ 15 | --build-arg RUSTPLATFORM=arm-unknown-linux-musleabi \ 16 | -t mmastrac/stylus:latest-arm -f docker/Dockerfile . 17 | docker build --no-cache --platform linux/arm64 \ 18 | --build-arg VERSION=$VERSION \ 19 | --build-arg BINARYPLATFORM=linux_arm64 \ 20 | --build-arg BUILDPLATFORM=arm64v8 \ 21 | --build-arg RUSTPLATFORM=aarch64-unknown-linux-musl \ 22 | -t mmastrac/stylus:latest-arm64 -f docker/Dockerfile . 23 | docker build --no-cache --platform linux/amd64 \ 24 | --build-arg VERSION=$VERSION \ 25 | --build-arg BINARYPLATFORM=linux_amd64 \ 26 | --build-arg BUILDPLATFORM=amd64 \ 27 | --build-arg RUSTPLATFORM=x86_64-unknown-linux-musl \ 28 | -t mmastrac/stylus:latest-x86_64 -f docker/Dockerfile . 29 | 30 | docker push mmastrac/stylus:latest-arm 31 | docker push mmastrac/stylus:latest-arm64 32 | docker push mmastrac/stylus:latest-x86_64 33 | 34 | # TBH I don't fully understand manifests, but this seems to work 35 | rm -rf ~/.docker/manifests/docker.io_mmastrac_stylus-latest 36 | docker manifest create mmastrac/stylus:latest \ 37 | mmastrac/stylus:latest-arm \ 38 | mmastrac/stylus:latest-arm64 \ 39 | mmastrac/stylus:latest-x86_64 40 | 41 | docker manifest annotate --os linux --arch arm --variant v6 mmastrac/stylus:latest mmastrac/stylus:latest-arm 42 | docker manifest annotate --os linux --arch arm64 --variant v8 mmastrac/stylus:latest mmastrac/stylus:latest-arm64 43 | docker manifest annotate --os linux --arch amd64 mmastrac/stylus:latest mmastrac/stylus:latest-x86_64 44 | 45 | docker manifest push mmastrac/stylus:latest 46 | 47 | rm -rf ~/.docker/manifests/docker.io_mmastrac_stylus-$VERSION 48 | docker manifest create mmastrac/stylus:$VERSION \ 49 | mmastrac/stylus:latest-arm \ 50 | mmastrac/stylus:latest-arm64 \ 51 | mmastrac/stylus:latest-x86_64 52 | 53 | docker manifest annotate --os linux --arch arm --variant v6 mmastrac/stylus:$VERSION mmastrac/stylus:latest-arm 54 | docker manifest annotate --os linux --arch arm64 --variant v8 mmastrac/stylus:$VERSION mmastrac/stylus:latest-arm64 55 | docker manifest annotate --os linux --arch amd64 mmastrac/stylus:$VERSION mmastrac/stylus:latest-x86_64 56 | 57 | docker manifest push mmastrac/stylus:$VERSION 58 | -------------------------------------------------------------------------------- /docker/Dockerfile: -------------------------------------------------------------------------------- 1 | ARG BUILDPLATFORM 2 | FROM ${BUILDPLATFORM}/alpine:latest 3 | ARG VERSION 4 | ARG RUSTPLATFORM 5 | ARG BINARYPLATFORM 6 | ARG PUPVERSION=0.4.0 7 | VOLUME /srv 8 | EXPOSE 8000/tcp 9 | 10 | # Our useful set of tools from the Alpine repository 11 | RUN apk update && \ 12 | apk upgrade && \ 13 | apk add jq curl netcat-openbsd bash openssh-client net-snmp-tools tini openssl stunnel 14 | 15 | # Install pup via curl 16 | RUN curl -fL https://github.com/ericchiang/pup/releases/download/v${PUPVERSION}/pup_v${PUPVERSION}_${BINARYPLATFORM}.zip \ 17 | | unzip -p - > /usr/local/bin/pup \ 18 | && chmod a+x /usr/local/bin/pup 19 | 20 | # Install stylus via curl 21 | RUN curl -fL https://github.com/mmastrac/stylus/releases/download/${VERSION}/stylus_${BINARYPLATFORM} > /usr/local/bin/stylus \ 22 | && chmod a+x /usr/local/bin/stylus 23 | 24 | ENV FORCE_CONTAINER_LISTEN_ADDR=0.0.0.0 FORCE_CONTAINER_PATH=/srv/config.yaml FORCE_CONTAINER_PORT=8000 25 | CMD [] 26 | 27 | # Use tini for proper signal handling 28 | ENV TINI_VERBOSITY=0 29 | ENTRYPOINT [ "tini", "--", "/usr/local/bin/stylus" ] 30 | -------------------------------------------------------------------------------- /docs/screenshot-1.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/mmastrac/stylus/f43531ac4d05a682788a93afe0a412813354c832/docs/screenshot-1.png -------------------------------------------------------------------------------- /docs/screenshot-2.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/mmastrac/stylus/f43531ac4d05a682788a93afe0a412813354c832/docs/screenshot-2.png -------------------------------------------------------------------------------- /docs/svg-demo/example.svg: -------------------------------------------------------------------------------- 1 | 2 | 3 | -------------------------------------------------------------------------------- /docs/svg-demo/screen-1.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/mmastrac/stylus/f43531ac4d05a682788a93afe0a412813354c832/docs/svg-demo/screen-1.png -------------------------------------------------------------------------------- /docs/svg-demo/screen-2.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/mmastrac/stylus/f43531ac4d05a682788a93afe0a412813354c832/docs/svg-demo/screen-2.png -------------------------------------------------------------------------------- /docs/svg-demo/screen-3.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/mmastrac/stylus/f43531ac4d05a682788a93afe0a412813354c832/docs/svg-demo/screen-3.png -------------------------------------------------------------------------------- /docs/svg-demo/screen-4.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/mmastrac/stylus/f43531ac4d05a682788a93afe0a412813354c832/docs/svg-demo/screen-4.png -------------------------------------------------------------------------------- /docs/svg-demo/screen-5.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/mmastrac/stylus/f43531ac4d05a682788a93afe0a412813354c832/docs/svg-demo/screen-5.png -------------------------------------------------------------------------------- /examples/dynamic/config.yaml: -------------------------------------------------------------------------------- 1 | version: 1 2 | server: 3 | port: 8000 4 | static: static 5 | 6 | monitor: 7 | dir: monitor.d 8 | 9 | css: 10 | # Use metadata to get prettier colors - note that we can add arbitrary string keys and values here 11 | metadata: 12 | red: 13 | color: "#fa897b" 14 | yellow: 15 | color: "#ffdd94" 16 | green: 17 | color: "#d0e6a5" 18 | rules: 19 | # Style the HTML/SVG with the appropriate status color 20 | - selectors: " 21 | #{{monitor.id}}, 22 | [data-monitor-id=\"{{monitor.id}}\"] > * 23 | " 24 | declarations: " 25 | background-color: {{monitor.status.css.metadata.color}} !important; 26 | fill: {{monitor.status.css.metadata.color}} !important; 27 | " 28 | # Add some text for the status/return value of the script 29 | - selectors: " 30 | #{{monitor.id}} td:nth-child(2)::after 31 | " 32 | declarations: " 33 | content: \"status={{monitor.status.status}} retval={{monitor.status.code}}\" 34 | " 35 | # Add the full description to the table 36 | - selectors: " 37 | #{{monitor.id}} td:nth-child(3)::after 38 | " 39 | declarations: " 40 | content: \"{{monitor.status.description}}\" 41 | " -------------------------------------------------------------------------------- /examples/dynamic/monitor.d/router/config.yaml: -------------------------------------------------------------------------------- 1 | test: 2 | interval: 60s 3 | timeout: 30s 4 | command: test.sh 5 | -------------------------------------------------------------------------------- /examples/dynamic/monitor.d/router/test.sh: -------------------------------------------------------------------------------- 1 | #!/bin/bash 2 | set -xeuf -o pipefail 3 | ping -c 1 8.8.8.8 4 | -------------------------------------------------------------------------------- /examples/dynamic/monitor.d/server/config.yaml: -------------------------------------------------------------------------------- 1 | test: 2 | interval: 60s 3 | timeout: 30s 4 | command: test.sh 5 | -------------------------------------------------------------------------------- /examples/dynamic/monitor.d/server/test.sh: -------------------------------------------------------------------------------- 1 | #!/bin/bash 2 | set -xeuf -o pipefail 3 | echo Curling 4 | curl --retry 2 --max-time 5 --connect-timeout 5 http://192.168.1.1:9000 5 | -------------------------------------------------------------------------------- /examples/dynamic/monitor.d/timeout/config.yaml: -------------------------------------------------------------------------------- 1 | test: 2 | interval: 60s 3 | timeout: 2s 4 | command: test.sh 5 | -------------------------------------------------------------------------------- /examples/dynamic/monitor.d/timeout/test.sh: -------------------------------------------------------------------------------- 1 | #!/bin/sh 2 | set -xeuf -o pipefail 3 | echo "Sleeping..." 4 | sleep 10 5 | echo "Done!" 6 | -------------------------------------------------------------------------------- /examples/dynamic/static/index.html: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 19 | 52 | 53 | 54 |

Dynamic Scripting Example

55 |

This example uses hand-rolled React.js code to create a dynamic status page.

56 | 57 |
58 |
59 | 60 | 61 | -------------------------------------------------------------------------------- /examples/group/config.yaml: -------------------------------------------------------------------------------- 1 | version: 1 2 | server: 3 | port: 8000 4 | static: static 5 | 6 | monitor: 7 | dir: monitor.d 8 | 9 | css: 10 | # Use metadata to get prettier colors - note that we can add arbitrary string keys and values here 11 | metadata: 12 | red: 13 | color: "#fa897b" 14 | yellow: 15 | color: "#ffdd94" 16 | green: 17 | color: "#d0e6a5" 18 | rules: 19 | # Style the HTML/SVG with the appropriate status color 20 | - selectors: " 21 | #{{monitor.id}}, 22 | [data-monitor-id=\"{{monitor.id}}\"] > * 23 | " 24 | declarations: " 25 | background-color: {{monitor.status.css.metadata.color}} !important; 26 | " 27 | - selectors: " 28 | #{{monitor.id}}::after 29 | " 30 | declarations: " 31 | content: \"status={{monitor.status.status}} retval={{monitor.status.code}}\" 32 | " 33 | -------------------------------------------------------------------------------- /examples/group/monitor.d/group/config.yaml: -------------------------------------------------------------------------------- 1 | group: 2 | id: port-{{ index }} 3 | axes: 4 | - name: index 5 | values: [0, 1, 2, 3, 4, 5, 6, 7] 6 | test: 7 | interval: 60s 8 | timeout: 30s 9 | command: test.sh 10 | -------------------------------------------------------------------------------- /examples/group/monitor.d/group/test.sh: -------------------------------------------------------------------------------- 1 | #!/bin/bash 2 | set -xeuf -o pipefail 3 | echo '@@STYLUS@@ group.port-0.status.status="yellow"' 4 | echo '@@STYLUS@@ group.port-1.status.status="green"' 5 | echo '@@STYLUS@@ group.port-2.status.status="yellow"' 6 | echo '@@STYLUS@@ group.port-3.status.status="green"' 7 | echo '@@STYLUS@@ group.port-4.status.status="green"' 8 | echo '@@STYLUS@@ group.port-5.status.status="yellow"' 9 | echo '@@STYLUS@@ group.port-6.status.status="yellow"' 10 | echo '@@STYLUS@@ group.port-7.status.status="red"' 11 | -------------------------------------------------------------------------------- /examples/group/static/index.html: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | Status page 5 | 6 | 22 | 23 | 47 | 48 | 49 |

Group Test

50 | 51 |

Status Table

52 | 53 | 54 | 55 | 56 | 57 | 58 | 59 | 60 | 61 | 62 | 63 | 64 | 65 | 66 |
67 | 68 | 69 | -------------------------------------------------------------------------------- /examples/metadata/config.yaml: -------------------------------------------------------------------------------- 1 | version: 1 2 | server: 3 | port: 8000 4 | static: static 5 | 6 | monitor: 7 | dir: monitor.d 8 | 9 | css: 10 | # Use metadata to get prettier colors - note that we can add arbitrary string keys and values here 11 | metadata: 12 | red: 13 | color: "#fa897b" 14 | yellow: 15 | color: "#ffdd94" 16 | green: 17 | color: "#d0e6a5" 18 | rules: 19 | # Style the HTML/SVG with the appropriate status color 20 | - selectors: " 21 | #{{monitor.id}}, 22 | [data-monitor-id=\"{{monitor.id}}\"] > * 23 | " 24 | declarations: " 25 | background-color: {{monitor.status.css.metadata.color}} !important; 26 | fill: {{monitor.status.css.metadata.color}} !important; 27 | " 28 | # Add some text for the status/return value of the script 29 | - selectors: " 30 | #{{monitor.id}} td:nth-child(2)::after 31 | " 32 | declarations: " 33 | content: \"status={{monitor.status.status}} retval={{monitor.status.code}}\" 34 | " 35 | # Add the full description to the table 36 | - selectors: " 37 | #{{monitor.id}} td:nth-child(3)::after 38 | " 39 | declarations: " 40 | content: \"{{monitor.status.description}}\" 41 | " 42 | # Add the metadata to the table 43 | - selectors: " 44 | #{{monitor.id}} td:nth-child(4)::after 45 | " 46 | declarations: " 47 | content: \"{{monitor.status.metadata.key}}\" 48 | " 49 | -------------------------------------------------------------------------------- /examples/metadata/monitor.d/metadata1/config.yaml: -------------------------------------------------------------------------------- 1 | test: 2 | interval: 60s 3 | timeout: 30s 4 | command: test.sh 5 | -------------------------------------------------------------------------------- /examples/metadata/monitor.d/metadata1/test.sh: -------------------------------------------------------------------------------- 1 | #!/bin/bash 2 | set -xeuf -o pipefail 3 | echo '@@STYLUS@@ status.description="Custom (yellow)"' 4 | echo '@@STYLUS@@ status.status="yellow"' 5 | echo '@@STYLUS@@ status.metadata.key="value1"' 6 | -------------------------------------------------------------------------------- /examples/metadata/monitor.d/metadata2/config.yaml: -------------------------------------------------------------------------------- 1 | test: 2 | interval: 60s 3 | timeout: 30s 4 | command: test.sh 5 | -------------------------------------------------------------------------------- /examples/metadata/monitor.d/metadata2/test.sh: -------------------------------------------------------------------------------- 1 | #!/bin/bash 2 | set -xeuf -o pipefail 3 | echo '@@STYLUS@@ status.description="Custom (red)"' 4 | echo '@@STYLUS@@ status.status="red"' 5 | echo '@@STYLUS@@ status.metadata.key="value2"' 6 | -------------------------------------------------------------------------------- /examples/metadata/monitor.d/metadata3/config.yaml: -------------------------------------------------------------------------------- 1 | test: 2 | interval: 60s 3 | timeout: 30s 4 | command: test.sh 5 | -------------------------------------------------------------------------------- /examples/metadata/monitor.d/metadata3/test.sh: -------------------------------------------------------------------------------- 1 | #!/bin/bash 2 | set -xeuf -o pipefail 3 | echo '@@STYLUS@@ status.description="Custom (blank)"' 4 | echo '@@STYLUS@@ status.status="blank"' 5 | echo '@@STYLUS@@ status.metadata.key="value3"' 6 | -------------------------------------------------------------------------------- /examples/metadata/static/index.html: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | Status page 5 | 6 | 18 | 19 | 43 | 44 | 45 |

Providing Metadata

46 | 47 |

Status Table

48 | 49 | 50 | 51 | 52 | 53 | 54 | 55 | 56 | 57 | 58 | 59 | 60 | 61 | 62 | 63 | 64 | 65 | 66 | 67 | 68 | 69 | 70 | 71 | 72 | 73 | 74 |
NameStatusDescriptionCustom Metadata
metadata1
metadata2
metadata3
75 | 76 | 77 | -------------------------------------------------------------------------------- /examples/simple_network/config.yaml: -------------------------------------------------------------------------------- 1 | version: 1 2 | server: 3 | port: 8000 4 | static: static 5 | 6 | monitor: 7 | dir: monitor.d 8 | 9 | css: 10 | # Use metadata to get prettier colors - note that we can add arbitrary string keys and values here 11 | metadata: 12 | red: 13 | color: "#fa897b" 14 | yellow: 15 | color: "#ffdd94" 16 | green: 17 | color: "#d0e6a5" 18 | rules: 19 | # Style the HTML/SVG with the appropriate status color 20 | - selectors: " 21 | #{{monitor.id}}, 22 | [data-monitor-id=\"{{monitor.id}}\"] > * 23 | " 24 | declarations: " 25 | background-color: {{monitor.status.css.metadata.color}} !important; 26 | fill: {{monitor.status.css.metadata.color}} !important; 27 | " 28 | # Add some text for the status/return value of the script 29 | - selectors: " 30 | #{{monitor.id}} td:nth-child(2)::after 31 | " 32 | declarations: " 33 | content: \"status={{monitor.status.status}} retval={{monitor.status.code}}\" 34 | " 35 | # Add the full description to the table 36 | - selectors: " 37 | #{{monitor.id}} td:nth-child(3)::after 38 | " 39 | declarations: " 40 | content: \"{{monitor.status.description}}\" 41 | " 42 | -------------------------------------------------------------------------------- /examples/simple_network/monitor.d/router/config.yaml: -------------------------------------------------------------------------------- 1 | # Explicitly set the id here 2 | id: router 3 | test: 4 | interval: 60s 5 | timeout: 30s 6 | command: test.sh 7 | -------------------------------------------------------------------------------- /examples/simple_network/monitor.d/router/test.sh: -------------------------------------------------------------------------------- 1 | #!/bin/bash 2 | set -xeuf -o pipefail 3 | ping -c 1 8.8.8.8 4 | -------------------------------------------------------------------------------- /examples/simple_network/monitor.d/server/config.yaml: -------------------------------------------------------------------------------- 1 | test: 2 | interval: 60s 3 | timeout: 30s 4 | command: test.sh 5 | -------------------------------------------------------------------------------- /examples/simple_network/monitor.d/server/test.sh: -------------------------------------------------------------------------------- 1 | #!/bin/bash 2 | set -xeuf -o pipefail 3 | echo Curling 4 | curl --retry 2 --max-time 5 --connect-timeout 5 http://192.168.1.1:9000 5 | -------------------------------------------------------------------------------- /examples/simple_network/monitor.d/timeout/config.yaml: -------------------------------------------------------------------------------- 1 | test: 2 | interval: 60s 3 | timeout: 2s 4 | command: test.sh 5 | -------------------------------------------------------------------------------- /examples/simple_network/monitor.d/timeout/test.sh: -------------------------------------------------------------------------------- 1 | #!/bin/sh 2 | set -xeuf -o pipefail 3 | echo "Sleeping..." 4 | sleep 10 5 | echo "Done!" 6 | -------------------------------------------------------------------------------- /examples/simple_network/static/index.html: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | Status page 5 | 6 | 18 | 19 | 43 | 44 | 45 |

Example Status Page

46 | 47 |

Status Table

48 | 49 | 50 | 51 | 52 | 53 | 54 | 55 | 56 | 57 | 58 | 59 | 60 | 61 | 62 | 63 | 64 | 65 | 66 | 67 | 68 | 69 | 70 |
NameStatusDescription
router
server
timeout
71 | 72 |

Status Diagram

73 | 74 | 75 |
Wifi
Wifi
Internet
Internet
Firewall
FirewallViewer does not support full SVG 1.1 76 | 77 | 78 | 79 | -------------------------------------------------------------------------------- /src/config/args.rs: -------------------------------------------------------------------------------- 1 | use std::path::PathBuf; 2 | use structopt::{clap::ArgGroup, StructOpt}; 3 | 4 | #[derive(Debug, StructOpt)] 5 | #[structopt(group = ArgGroup::with_name("path").required(true))] 6 | pub struct Args { 7 | // TODO 8 | // /// Daemonize stylus and detact from the tty 9 | // #[structopt(long, short, parse(from_flag))] 10 | // pub daemonize: bool, 11 | /// Pass multiple times to increase the level of verbosity (overwritten by STYLUS_LOG) 12 | #[structopt( 13 | name = "verbose", 14 | long = "verbose", 15 | short = "v", 16 | parse(from_occurrences), 17 | global = true 18 | )] 19 | verbose: u8, 20 | 21 | /// Dumps the effective configuration without running 22 | #[structopt(long, parse(from_flag))] 23 | pub dump: bool, 24 | 25 | /// If specified, runs the given test immediately and displays the status of the given monitor after it completes 26 | #[structopt(long, conflicts_with = "dump")] 27 | pub test: Option, 28 | 29 | /// The configuration file 30 | #[structopt(name = "FILE", parse(from_os_str), group = "path")] 31 | pub config: Option, 32 | 33 | /// Advanced: if running in a container, allows the container to override any port specified in config.yaml 34 | #[structopt(long, env = "FORCE_CONTAINER_PORT")] 35 | pub force_container_port: Option, 36 | 37 | /// Advanced: if running in a container, allows the container to specify that stylus should listen on the wildcard address 38 | #[structopt(long, env = "FORCE_CONTAINER_LISTEN_ADDR")] 39 | pub force_container_listen_addr: Option, 40 | 41 | /// Advanced: if running a container, allows the container to override any path specified on the command line 42 | #[structopt(long, env = "FORCE_CONTAINER_PATH", group = "path")] 43 | pub force_container_path: Option, 44 | } 45 | -------------------------------------------------------------------------------- /src/config/mod.rs: -------------------------------------------------------------------------------- 1 | use std::collections::BTreeMap; 2 | use std::error::Error; 3 | use std::path::{Path, PathBuf}; 4 | 5 | use itertools::Itertools; 6 | use structopt::StructOpt; 7 | use walkdir::WalkDir; 8 | 9 | use self::args::Args; 10 | pub use self::structs::*; 11 | use crate::interpolate::*; 12 | 13 | mod args; 14 | mod structs; 15 | 16 | pub fn parse_config_from_args() -> Result> { 17 | let args = Args::from_args(); 18 | let config_path = if let Some(path) = args.force_container_path { 19 | path 20 | } else { 21 | args.config.unwrap() 22 | }; 23 | let mut config = parse_config(&config_path)?; 24 | if let Some(port) = args.force_container_port { 25 | config.server.port = port 26 | }; 27 | if let Some(addr) = args.force_container_listen_addr { 28 | config.server.listen_addr = addr 29 | } 30 | debug!("{:?}", config); 31 | 32 | if args.dump { 33 | Ok(OperationMode::Dump(config)) 34 | } else if let Some(test) = args.test { 35 | Ok(OperationMode::Test(config, test)) 36 | } else { 37 | Ok(OperationMode::Run(config)) 38 | } 39 | } 40 | 41 | pub fn parse_config(file: &Path) -> Result> { 42 | let curr = std::env::current_dir()?; 43 | let mut path = Path::new(&file).into(); 44 | canonicalize("configuration", Some(&curr), &mut path)?; 45 | if path.is_dir() { 46 | warn!("Passed configuration location {:?} was a directory -- inferring 'config.yaml' in that directory", file); 47 | path = path.join("config.yaml"); 48 | } 49 | let s = std::fs::read_to_string(&path)?; 50 | parse_config_string(&path, s) 51 | } 52 | 53 | /// Given a base path and a relative path, gets the full path (or errors out if it doesn't exist). 54 | fn canonicalize( 55 | what: &str, 56 | base_path: Option<&Path>, 57 | path: &mut PathBuf, 58 | ) -> Result<(), Box> { 59 | let new = match base_path { 60 | None => path.clone(), 61 | Some(base_path) => base_path.join(&path), 62 | }; 63 | 64 | if !new.exists() { 65 | Err(if let Some(base_path) = base_path { 66 | format!( 67 | "{} does not exist ({}, base path was {})", 68 | what, 69 | path.to_string_lossy(), 70 | base_path.to_string_lossy() 71 | ) 72 | } else { 73 | format!("{} does not exist ({})", what, path.to_string_lossy()) 74 | } 75 | .into()) 76 | } else { 77 | *path = new.canonicalize()?; 78 | Ok(()) 79 | } 80 | } 81 | 82 | pub fn parse_config_string(file: &Path, s: String) -> Result> { 83 | let mut config: Config = serde_yaml::from_str(&s)?; 84 | if Iterator::count(config.base_path.components()) == 0 { 85 | config.base_path = Path::parent(Path::new(&file)) 86 | .ok_or("Failed to get base path")? 87 | .into(); 88 | } 89 | 90 | for mut css in config.css.rules.iter_mut() { 91 | if css.declarations.contains("monitor.config.id") 92 | || css.selectors.contains("monitor.config.id") 93 | { 94 | let msg = "Found deprecated 'monitor.config.id' in template. Please use 'monitor.id'"; 95 | warn!("{}", msg); 96 | return Err(msg.into()); 97 | } 98 | 99 | css.declarations = css.declarations.trim().to_string(); 100 | css.selectors = css.selectors.trim().to_string(); 101 | } 102 | 103 | // Canonical paths 104 | canonicalize("base path", None, &mut config.base_path)?; 105 | canonicalize( 106 | "static file path", 107 | Some(&config.base_path), 108 | &mut config.server.r#static, 109 | )?; 110 | canonicalize( 111 | "monitor directory path", 112 | Some(&config.base_path), 113 | &mut config.monitor.dir, 114 | )?; 115 | 116 | Ok(config) 117 | } 118 | 119 | pub fn parse_monitor_configs(root: &Path) -> Result, Box> { 120 | let mut monitor_configs = vec![]; 121 | for e in WalkDir::new(root) 122 | .min_depth(1) 123 | .max_depth(1) 124 | .follow_links(true) 125 | .into_iter() 126 | { 127 | let e = e?; 128 | if e.file_type().is_dir() { 129 | let mut p = e.into_path(); 130 | p.push("config.yaml"); 131 | if p.exists() { 132 | monitor_configs.push(parse_monitor_config(&p)?); 133 | info!("Found monitor in {:?}", p); 134 | } else { 135 | debug!("Ignoring {:?} as there was no config.yaml", p); 136 | } 137 | } else { 138 | debug!("Ignoring {:?} as it was not a directory", e.path()); 139 | } 140 | } 141 | 142 | if monitor_configs.is_empty() { 143 | Err(format!( 144 | "Unable to locate any valid configurations in {}", 145 | root.to_string_lossy() 146 | ) 147 | .into()) 148 | } else { 149 | Ok(monitor_configs) 150 | } 151 | } 152 | 153 | pub fn parse_monitor_config(file: &Path) -> Result> { 154 | let s = std::fs::read_to_string(&file)?; 155 | parse_monitor_config_string(file, s) 156 | } 157 | 158 | pub fn parse_monitor_config_string( 159 | file: &Path, 160 | s: String, 161 | ) -> Result> { 162 | let mut config: MonitorDirConfig = serde_yaml::from_str(&s)?; 163 | if Iterator::count(config.base_path.components()) == 0 { 164 | config.base_path = Path::parent(file).ok_or("Failed to get base path")?.into(); 165 | } 166 | 167 | // Canonical paths 168 | canonicalize("base path", None, &mut config.base_path)?; 169 | 170 | if config.id.is_empty() { 171 | config.id = file 172 | .parent() 173 | .ok_or("Invalid parent")? 174 | .file_name() 175 | .ok_or("Invalid file name")? 176 | .to_string_lossy() 177 | .to_string(); 178 | } 179 | 180 | let test = config.root.test_mut(); 181 | test.command = Path::canonicalize(&config.base_path.join(&test.command))?; 182 | 183 | let mut children = BTreeMap::new(); 184 | if let MonitorDirRootConfig::Group(ref mut group) = config.root { 185 | for values in group 186 | .axes 187 | .iter() 188 | .map(|axis| axis.values.iter().map(move |v| (v, &axis.name))) 189 | .multi_cartesian_product() 190 | { 191 | let mut axes = BTreeMap::new(); 192 | for val in values { 193 | axes.insert(val.1.to_owned(), val.0.to_owned()); 194 | } 195 | 196 | let id = interpolate_id(&axes, &group.id)?; 197 | let child = MonitorDirChildConfig { 198 | axes, 199 | test: group.test.clone(), 200 | }; 201 | children.insert(id, child); 202 | } 203 | group.children = children; 204 | } 205 | 206 | Ok(config) 207 | } 208 | 209 | #[cfg(test)] 210 | mod test { 211 | use super::*; 212 | 213 | #[test] 214 | fn deserialize_config_test() -> Result<(), Box> { 215 | let config = parse_config(Path::new("src/testcases/v1.yaml"))?; 216 | assert_eq!(config.base_path, Path::new("src/testcases").canonicalize()?); 217 | Ok(()) 218 | } 219 | 220 | #[test] 221 | fn deserialize_monitor_test() -> Result<(), Box> { 222 | let config = parse_monitor_config_string( 223 | &Path::new("/tmp/test.yaml"), 224 | r#" 225 | # Explicitly set the id here 226 | id: router 227 | test: 228 | interval: 60s 229 | timeout: 30s 230 | command: /bin/sleep 231 | "# 232 | .into(), 233 | )?; 234 | 235 | match config.root { 236 | MonitorDirRootConfig::Test(test) => { 237 | assert_eq!(test.command, Path::new("/bin/sleep").canonicalize()?) 238 | } 239 | _ => panic!(""), 240 | } 241 | 242 | Ok(()) 243 | } 244 | 245 | #[test] 246 | fn deserialize_monitor_group() -> Result<(), Box> { 247 | let config = parse_monitor_config_string( 248 | &Path::new("/tmp/test.yaml"), 249 | r#" 250 | # Explicitly set the id here 251 | id: router 252 | group: 253 | id: group-{{ index }} 254 | axes: 255 | - values: [1, 2, 3] 256 | name: index 257 | test: 258 | interval: 60s 259 | timeout: 30s 260 | command: /bin/sleep 261 | "# 262 | .into(), 263 | )?; 264 | 265 | match config.root { 266 | MonitorDirRootConfig::Group(group) => { 267 | assert_eq!(group.test.command, Path::new("/bin/sleep").canonicalize()?) 268 | } 269 | _ => panic!(""), 270 | } 271 | 272 | Ok(()) 273 | } 274 | } 275 | -------------------------------------------------------------------------------- /src/config/structs.rs: -------------------------------------------------------------------------------- 1 | use std::collections::BTreeMap; 2 | use std::path::PathBuf; 3 | use std::sync::Arc; 4 | use std::time::Duration; 5 | 6 | use serde::{Deserialize, Serialize}; 7 | 8 | pub enum OperationMode { 9 | Run(Config), 10 | Dump(Config), 11 | Test(Config, String), 12 | } 13 | 14 | fn default_server_port() -> u16 { 15 | 80 16 | } 17 | 18 | fn default_listen_addr() -> String { 19 | "0.0.0.0".into() 20 | } 21 | 22 | fn default_server_static() -> PathBuf { 23 | "static".into() 24 | } 25 | 26 | #[derive(Clone, Debug, Serialize, Deserialize)] 27 | #[serde(deny_unknown_fields)] 28 | pub struct Config { 29 | pub version: u32, 30 | pub server: ServerConfig, 31 | pub monitor: MonitorConfig, 32 | pub css: CssConfig, 33 | #[serde(default)] 34 | pub base_path: PathBuf, 35 | } 36 | 37 | #[derive(Clone, Debug, Serialize, Deserialize)] 38 | #[serde(deny_unknown_fields)] 39 | pub struct ServerConfig { 40 | #[serde(default = "default_server_port")] 41 | pub port: u16, 42 | #[serde(default = "default_listen_addr")] 43 | pub listen_addr: String, 44 | #[serde(default = "default_server_static")] 45 | pub r#static: PathBuf, 46 | } 47 | 48 | #[derive(Clone, Debug, Serialize, Deserialize)] 49 | #[serde(deny_unknown_fields)] 50 | pub struct MonitorConfig { 51 | pub dir: PathBuf, 52 | } 53 | 54 | #[derive(Clone, Debug, Serialize, Deserialize)] 55 | #[serde(deny_unknown_fields)] 56 | pub struct CssConfig { 57 | pub metadata: CssMetadataConfig, 58 | pub rules: Vec, 59 | } 60 | 61 | #[derive(Clone, Debug, Serialize, Deserialize)] 62 | #[serde(deny_unknown_fields)] 63 | pub struct CssRule { 64 | pub selectors: String, 65 | pub declarations: String, 66 | } 67 | 68 | #[derive(Clone, Debug, Serialize, Deserialize)] 69 | #[serde(deny_unknown_fields)] 70 | pub struct CssMetadataConfig { 71 | #[serde(default)] 72 | pub blank: Arc>, 73 | #[serde(default)] 74 | pub red: Arc>, 75 | #[serde(default)] 76 | pub yellow: Arc>, 77 | #[serde(default)] 78 | pub green: Arc>, 79 | } 80 | 81 | #[cfg(test)] 82 | impl Default for CssMetadataConfig { 83 | fn default() -> Self { 84 | Self { 85 | blank: Arc::new(Default::default()), 86 | red: Arc::new(Default::default()), 87 | yellow: Arc::new(Default::default()), 88 | green: Arc::new(Default::default()), 89 | } 90 | } 91 | } 92 | 93 | #[derive(Clone, Debug, Serialize, Deserialize)] 94 | #[serde(deny_unknown_fields)] 95 | pub struct MonitorDirConfig { 96 | #[serde(flatten)] 97 | pub root: MonitorDirRootConfig, 98 | #[serde(default)] 99 | pub base_path: PathBuf, 100 | #[serde(default)] 101 | pub id: String, 102 | } 103 | 104 | #[derive(Clone, Debug, Serialize, Deserialize)] 105 | #[serde(rename_all = "snake_case")] 106 | #[serde(deny_unknown_fields)] 107 | pub enum MonitorDirRootConfig { 108 | Test(MonitorDirTestConfig), 109 | Group(MonitorDirGroupConfig), 110 | } 111 | 112 | impl MonitorDirRootConfig { 113 | /// Get the MonitorDirTestConfig for this. 114 | pub fn test(&self) -> &MonitorDirTestConfig { 115 | match self { 116 | MonitorDirRootConfig::Test(ref test) => test, 117 | MonitorDirRootConfig::Group(ref group) => &group.test, 118 | } 119 | } 120 | 121 | /// Get the MonitorDirTestConfig for this. 122 | pub fn test_mut(&mut self) -> &mut MonitorDirTestConfig { 123 | match self { 124 | MonitorDirRootConfig::Test(ref mut test) => test, 125 | MonitorDirRootConfig::Group(ref mut group) => &mut group.test, 126 | } 127 | } 128 | } 129 | 130 | #[derive(Clone, Debug, Serialize, Deserialize)] 131 | #[serde(deny_unknown_fields)] 132 | pub struct MonitorDirGroupConfig { 133 | pub id: String, 134 | pub test: MonitorDirTestConfig, 135 | pub axes: Vec, 136 | #[serde(skip_deserializing)] 137 | pub children: BTreeMap, 138 | } 139 | 140 | #[derive(Clone, Debug, Serialize, Deserialize)] 141 | #[serde(deny_unknown_fields)] 142 | pub struct MonitorDirChildConfig { 143 | pub axes: BTreeMap, 144 | pub test: MonitorDirTestConfig, 145 | } 146 | 147 | #[derive(Clone, Debug, Serialize, Deserialize, Eq, PartialEq, Ord, PartialOrd, Hash)] 148 | #[serde(untagged)] 149 | #[serde(deny_unknown_fields)] 150 | pub enum MonitorDirAxisValue { 151 | String(String), 152 | Number(i64), 153 | } 154 | 155 | #[derive(Clone, Debug, Serialize, Deserialize)] 156 | #[serde(deny_unknown_fields)] 157 | pub struct MonitorDirAxisConfig { 158 | pub values: Vec, 159 | pub name: String, 160 | } 161 | 162 | #[derive(Clone, Debug, Default, Serialize, Deserialize)] 163 | #[serde(deny_unknown_fields)] 164 | pub struct MonitorDirTestConfig { 165 | #[serde(with = "humantime_serde")] 166 | pub interval: Duration, 167 | #[serde(with = "humantime_serde")] 168 | pub timeout: Duration, 169 | pub command: PathBuf, 170 | } 171 | -------------------------------------------------------------------------------- /src/css.rs: -------------------------------------------------------------------------------- 1 | use crate::config::*; 2 | use crate::interpolate::*; 3 | use crate::status::*; 4 | 5 | pub fn generate_css_for_state(config: &CssConfig, status: &Status) -> String { 6 | let mut css = format!("/* Generated at {:?} */\n", std::time::Instant::now()); 7 | for monitor in &status.monitors { 8 | css += "\n"; 9 | let mut monitor = monitor.write(); 10 | 11 | // Build the css from cache 12 | let mut cache = monitor.css.take(); 13 | css += cache.get_or_insert_with(|| generate_css_for_monitor(&config, &monitor)); 14 | monitor.css = cache; 15 | } 16 | css 17 | } 18 | 19 | pub fn generate_css_for_monitor(config: &CssConfig, monitor: &MonitorState) -> String { 20 | let mut css = format!("/* {} */\n", monitor.id); 21 | for rule in &config.rules { 22 | css += &interpolate_monitor( 23 | &monitor.id, 24 | &monitor.config, 25 | &monitor.status, 26 | &rule.selectors, 27 | ) 28 | .unwrap_or_else(|_| "/* failed */".into()); 29 | css += " {\n"; 30 | css += &interpolate_monitor( 31 | &monitor.id, 32 | &monitor.config, 33 | &monitor.status, 34 | &rule.declarations, 35 | ) 36 | .unwrap_or_else(|_| "/* failed */".into()); 37 | css += "\n}\n\n"; 38 | } 39 | for child in monitor.children.iter() { 40 | for rule in &config.rules { 41 | css += &interpolate_monitor(child.0, &monitor.config, &child.1.status, &rule.selectors) 42 | .unwrap_or_else(|_| "/* failed */".into()); 43 | css += " {\n"; 44 | css += &interpolate_monitor( 45 | child.0, 46 | &monitor.config, 47 | &child.1.status, 48 | &rule.declarations, 49 | ) 50 | .unwrap_or_else(|_| "/* failed */".into()); 51 | css += "\n}\n\n"; 52 | } 53 | } 54 | css 55 | } 56 | -------------------------------------------------------------------------------- /src/http.rs: -------------------------------------------------------------------------------- 1 | use std::convert::Infallible; 2 | use std::net::{IpAddr, SocketAddr}; 3 | use std::sync::Arc; 4 | 5 | use warp::path; 6 | use warp::Filter; 7 | 8 | use crate::config::Config; 9 | use crate::css::generate_css_for_state; 10 | use crate::monitor::Monitor; 11 | use crate::status::Status; 12 | 13 | const VERSION: &str = env!("CARGO_PKG_VERSION"); 14 | 15 | async fn css_request(monitor: Arc) -> Result { 16 | Ok(generate_css_for_state( 17 | &monitor.config.css, 18 | &monitor.status(), 19 | )) 20 | } 21 | 22 | async fn status_request(monitor: Arc) -> Result { 23 | Ok(monitor.status()) 24 | } 25 | 26 | async fn log_request(monitor: Arc, s: String) -> Result { 27 | for monitor in monitor.status().monitors { 28 | let monitor = monitor.read(); 29 | if monitor.id == s { 30 | let mut logs = String::new(); 31 | for log in &monitor.status.log { 32 | logs += &log; 33 | logs += "\n"; 34 | } 35 | return Ok(logs); 36 | } 37 | } 38 | Ok("Not found".to_owned()) 39 | } 40 | 41 | pub async fn run(config: Config) { 42 | let monitor = Arc::new(Monitor::new(&config).expect("Unable to create monitor")); 43 | let with_monitor = warp::any().map(move || monitor.clone()); 44 | 45 | // style.css for formatting 46 | let style = path!("style.css") 47 | .and(with_monitor.clone()) 48 | .and_then(css_request) 49 | .with(warp::reply::with::header("Content-Type", "text/css")); 50 | 51 | // status.json for advanced integrations 52 | let status = path!("status.json") 53 | .and(with_monitor.clone()) 54 | .and_then(status_request) 55 | .map(|s| warp::reply::json(&s)) 56 | .with(warp::reply::with::header( 57 | "Content-Type", 58 | "application/json", 59 | )); 60 | 61 | // logging endpoint 62 | let log = path!("log" / String) 63 | .and(with_monitor.clone()) 64 | .and_then(|s, m| log_request(m, s)) 65 | .with(warp::reply::with::header("Content-Type", "text/plain")); 66 | 67 | // static pages 68 | let r#static = warp::fs::dir(config.server.r#static); 69 | 70 | let routes = warp::get().and(style.or(status).or(log).or(r#static)); 71 | 72 | let ip_addr = config 73 | .server 74 | .listen_addr 75 | .parse::() 76 | .expect("Failed to parse listen address"); 77 | let addr = SocketAddr::new(ip_addr, config.server.port); 78 | 79 | // We print one and only one message 80 | eprintln!("Stylus {} is listening on {}!", VERSION, addr); 81 | 82 | warp::serve(routes).run(addr).await; 83 | } 84 | -------------------------------------------------------------------------------- /src/interpolate.rs: -------------------------------------------------------------------------------- 1 | use std::collections::BTreeMap; 2 | use std::error::Error; 3 | 4 | use handlebars::*; 5 | use itertools::Itertools; 6 | use serde::Serialize; 7 | use serde_json::value::*; 8 | 9 | use crate::config::{MonitorDirAxisValue, MonitorDirTestConfig}; 10 | use crate::status::*; 11 | 12 | pub fn interpolate_monitor( 13 | id: &str, 14 | config: &MonitorDirTestConfig, 15 | status: &MonitorStatus, 16 | s: &str, 17 | ) -> Result> { 18 | // TODO: avoid creating this handlebars registry every time 19 | let mut handlebars = Handlebars::new(); 20 | handlebars.register_template_string("t", s)?; 21 | 22 | let mut map = BTreeMap::new(); 23 | #[derive(Clone, Debug, Serialize)] 24 | struct Monitor<'a> { 25 | id: &'a str, 26 | config: &'a MonitorDirTestConfig, 27 | status: &'a MonitorStatus, 28 | } 29 | map.insert("monitor", Monitor { id, config, status }); 30 | Ok(handlebars.render("t", &map)?.trim().to_owned()) 31 | } 32 | 33 | pub fn interpolate_id( 34 | values: &BTreeMap, 35 | s: &str, 36 | ) -> Result> { 37 | // TODO: avoid creating this handlebars registry every time 38 | let mut handlebars = Handlebars::new(); 39 | handlebars.set_strict_mode(true); 40 | handlebars.register_template_string("t", s)?; 41 | 42 | Ok(handlebars.render("t", values)?.trim().to_owned()) 43 | } 44 | 45 | pub fn interpolate_modify<'a>( 46 | mut status: &'a mut MonitorStatus, 47 | children: &'a mut BTreeMap, 48 | s: &str, 49 | ) -> Result<(), Box> { 50 | let (raw_path, value) = s.splitn(2, '=').next_tuple().ok_or("Invalid expression")?; 51 | let value: Value = serde_json::from_str(value)?; 52 | let mut path = raw_path.split('.'); 53 | 54 | match path.next() { 55 | Some("status") => {} 56 | Some("group") => { 57 | let part = path.next().ok_or("Missing group child")?; 58 | status = &mut children 59 | .get_mut(part) 60 | .ok_or(format!("Could not find child '{}'", part))? 61 | .status; 62 | if path.next() != Some("status") { 63 | return Err(format!("Invalid path: {}", raw_path).into()); 64 | } 65 | } 66 | _ => return Err(format!("Invalid path: {}", raw_path).into()), 67 | }; 68 | 69 | let pending = status 70 | .pending 71 | .get_or_insert_with(MonitorPendingStatus::default); 72 | 73 | match path.next() { 74 | Some("status") => { 75 | pending.status = Some(serde_json::from_value(value)?); 76 | } 77 | Some("description") => { 78 | pending.description = Some(serde_json::from_value(value)?); 79 | } 80 | Some("metadata") => match path.next() { 81 | Some(s) => { 82 | let metadata = pending.metadata.get_or_insert_with(BTreeMap::new); 83 | drop(metadata.insert(s.to_owned(), serde_json::from_value(value)?)) 84 | } 85 | _ => return Err(format!("Invalid path: {}", raw_path).into()), 86 | }, 87 | _ => return Err(format!("Invalid path: {}", raw_path).into()), 88 | } 89 | 90 | Ok(()) 91 | } 92 | 93 | #[cfg(test)] 94 | mod tests { 95 | use super::*; 96 | use std::iter::FromIterator; 97 | use std::sync::Arc; 98 | 99 | fn update(s: &'static str) -> Result> { 100 | let mut status = Default::default(); 101 | 102 | interpolate_modify(&mut status, &mut BTreeMap::new(), s)?; 103 | Ok(status) 104 | } 105 | 106 | #[test] 107 | fn test_interpolate_id() -> Result<(), Box> { 108 | let mut values = BTreeMap::new(); 109 | values.insert("index".to_owned(), MonitorDirAxisValue::Number(2)); 110 | assert_eq!(interpolate_id(&values, "port-{{ index }}")?, "port-2"); 111 | Ok(()) 112 | } 113 | 114 | #[test] 115 | fn test_interpolate_error() -> Result<(), Box> { 116 | let mut values = BTreeMap::new(); 117 | values.insert("index".to_owned(), MonitorDirAxisValue::Number(2)); 118 | assert!(interpolate_id(&values, "port-{{ ondex }}").is_err()); 119 | Ok(()) 120 | } 121 | 122 | #[test] 123 | fn test_replace() -> Result<(), Box> { 124 | let config = Default::default(); 125 | let mut status = MonitorStatus::default(); 126 | status.css.metadata = Arc::new(BTreeMap::from_iter(vec![( 127 | "color".to_owned(), 128 | "blue".to_owned(), 129 | )])); 130 | assert_eq!( 131 | interpolate_monitor( 132 | "id", 133 | &config, 134 | &status, 135 | "{{monitor.status.css.metadata.color}}" 136 | )?, 137 | "blue" 138 | ); 139 | Ok(()) 140 | } 141 | 142 | #[test] 143 | fn test_modify() -> Result<(), Box> { 144 | let status = update("status.status=\"red\"")?; 145 | assert_eq!(status.pending.unwrap().status.unwrap(), StatusState::Red); 146 | let status = update("status.description=\"foo\"")?; 147 | assert_eq!(status.pending.unwrap().description.unwrap(), "foo"); 148 | let status = update("status.metadata.foo=\"bar\"")?; 149 | let mut map = BTreeMap::new(); 150 | map.insert("foo".to_owned(), "bar".to_owned()); 151 | assert_eq!(status.pending.unwrap().metadata.unwrap(), map); 152 | Ok(()) 153 | } 154 | } 155 | -------------------------------------------------------------------------------- /src/main.rs: -------------------------------------------------------------------------------- 1 | #![warn(clippy::all)] 2 | use env_logger::Env; 3 | use keepcalm::SharedMut; 4 | 5 | mod config; 6 | mod css; 7 | mod http; 8 | mod interpolate; 9 | mod monitor; 10 | mod status; 11 | mod worker; 12 | 13 | #[macro_use] 14 | extern crate log; 15 | #[macro_use] 16 | extern crate derive_more; 17 | 18 | use crate::config::{parse_config_from_args, parse_monitor_configs, OperationMode}; 19 | use crate::status::{MonitorState, Status}; 20 | use crate::worker::monitor_run; 21 | 22 | #[tokio::main] 23 | async fn main() -> () { 24 | run().await 25 | } 26 | 27 | async fn run() { 28 | // Manually bootstrap logging from args 29 | let default = match std::env::args().filter(|s| s == "-v").count() { 30 | 0 => "stylus=warn", 31 | 1 => "stylus=info", 32 | 2 => "stylus=debug", 33 | _ => "debug", 34 | }; 35 | env_logger::init_from_env(Env::new().filter_or("STYLUS_LOG", default)); 36 | 37 | match parse_config_from_args().expect("Unable to parse configuration") { 38 | OperationMode::Run(config) => crate::http::run(config).await, 39 | OperationMode::Dump(config) => { 40 | let monitors = parse_monitor_configs(&config.monitor.dir) 41 | .expect("Unable to parse monitor configurations"); 42 | let status = Status { 43 | config, 44 | monitors: monitors 45 | .iter() 46 | .map(|m| SharedMut::new(m.into())) 47 | .collect(), 48 | }; 49 | println!( 50 | "{}", 51 | serde_json::to_string_pretty(&status) 52 | .expect("Unable to pretty-print configuration") 53 | ); 54 | } 55 | OperationMode::Test(config, id) => { 56 | let monitors = parse_monitor_configs(&config.monitor.dir) 57 | .expect("Unable to parse monitor configurations"); 58 | for monitor in monitors.iter() { 59 | if monitor.id == id { 60 | let mut state: MonitorState = monitor.into(); 61 | println!("Monitor Log"); 62 | println!("-----------"); 63 | println!(); 64 | 65 | monitor_run(&monitor, &mut |_, msg| { 66 | state 67 | .process_message(&monitor.id, msg, &config.css.metadata, &mut |m| { 68 | eprintln!("{}", m); 69 | }) 70 | .expect("Failed to process message"); 71 | Ok(()) 72 | }) 73 | .1 74 | .expect("Failed to run the monitor"); 75 | 76 | println!(); 77 | println!("State"); 78 | println!("-----"); 79 | println!(); 80 | println!( 81 | "{}", 82 | serde_json::to_string_pretty(&state) 83 | .expect("Unable to pretty-print configuration") 84 | ); 85 | 86 | println!(); 87 | println!("CSS"); 88 | println!("---"); 89 | println!(); 90 | 91 | println!( 92 | "{}", 93 | crate::css::generate_css_for_monitor(&config.css, &state) 94 | ); 95 | return; 96 | } 97 | } 98 | 99 | panic!("Unable to locate monitor with id '{}'", id) 100 | } 101 | } 102 | } 103 | -------------------------------------------------------------------------------- /src/monitor.rs: -------------------------------------------------------------------------------- 1 | use std::error::Error; 2 | use std::thread; 3 | 4 | use keepcalm::SharedMut; 5 | 6 | use crate::config::*; 7 | use crate::status::*; 8 | use crate::worker::{monitor_thread, ShuttingDown}; 9 | 10 | /// We don't want to store the actual sender in the MonitorThread, just a boxed version of it that 11 | /// will correctly drop to trigger the thread to shut down. 12 | trait OpaqueSender: std::fmt::Debug + Send + Sync {} 13 | 14 | impl OpaqueSender for T where T: std::fmt::Debug + Send + Sync {} 15 | 16 | #[derive(Debug)] 17 | struct MonitorThread { 18 | /// This is solely used to detect when [`MonitorThread`] is dropped. 19 | #[allow(unused)] 20 | drop_detect: SharedMut<()>, 21 | state: SharedMut, 22 | } 23 | 24 | #[derive(Debug)] 25 | pub struct Monitor { 26 | pub config: Config, 27 | monitors: Vec, 28 | } 29 | 30 | impl MonitorThread { 31 | /// Create a new monitor thread and release it 32 | fn create( 33 | monitor: MonitorDirConfig, 34 | mut state: MonitorState, 35 | css_config: CssMetadataConfig, 36 | ) -> Result> { 37 | state.status.initialize(&css_config); 38 | for state in &mut state.children { 39 | state.1.status.initialize(&css_config); 40 | } 41 | let state = SharedMut::new(state); 42 | 43 | let monitor_state = state.clone(); 44 | let drop_detect = SharedMut::new(()); 45 | let mut drop_detect_clone = Some(drop_detect.clone()); 46 | let _thread = thread::spawn(move || { 47 | monitor_thread(monitor, move |id, m| { 48 | drop_detect_clone = if let Some(drop_detect) = drop_detect_clone.take() { 49 | match drop_detect.try_unwrap() { 50 | Ok(_) => None, 51 | Err(drop_detect) => Some(drop_detect), 52 | } 53 | } else { 54 | None 55 | }; 56 | 57 | if drop_detect_clone.is_none() { 58 | return Err(ShuttingDown::default().into()); 59 | } 60 | monitor_state.write().process_message( 61 | id, 62 | m, 63 | &css_config, 64 | &mut |_| {}, 65 | ) 66 | }); 67 | }); 68 | 69 | let thread = MonitorThread { 70 | state, 71 | drop_detect 72 | }; 73 | 74 | Ok(thread) 75 | } 76 | } 77 | 78 | impl Monitor { 79 | pub fn new(config: &Config) -> Result> { 80 | let config = config.clone(); 81 | let mut monitors = Vec::new(); 82 | for monitor_config in &parse_monitor_configs(&config.monitor.dir)? { 83 | monitors.push(MonitorThread::create( 84 | monitor_config.clone(), 85 | monitor_config.into(), 86 | config.css.metadata.clone(), 87 | )?); 88 | } 89 | Ok(Monitor { config, monitors }) 90 | } 91 | 92 | pub fn status(&self) -> Status { 93 | Status { 94 | config: self.config.clone(), 95 | monitors: self.monitors.iter().map(|m| m.state.clone()).collect(), 96 | } 97 | } 98 | } 99 | 100 | #[cfg(test)] 101 | mod test { 102 | use super::*; 103 | use crate::worker::monitor_run; 104 | use std::path::Path; 105 | 106 | fn extract_status(status: &MonitorStatus) -> (StatusState, String, i64) { 107 | ( 108 | status.status.unwrap(), 109 | status.description.clone(), 110 | status.code, 111 | ) 112 | } 113 | 114 | fn extract_child_results(state: MonitorState) -> Vec<(StatusState, String, i64)> { 115 | state 116 | .children 117 | .iter() 118 | .map(|c| extract_status(&c.1.status)) 119 | .collect() 120 | } 121 | 122 | fn run_test(test: &str) -> Result> { 123 | let config = 124 | parse_monitor_config(Path::new(&format!("src/testcases/{}/config.yaml", test)))?; 125 | let mut state: MonitorState = (&config).into(); 126 | let metadata = CssMetadataConfig::default(); 127 | monitor_run(&config, &mut |id, m| { 128 | state.process_message(id, m, &metadata, &mut |_| {}) 129 | }) 130 | .1?; 131 | Ok(state) 132 | } 133 | 134 | /// Test if metadata is set correctly when a script succeeds. 135 | #[test] 136 | fn metadata_success_test() -> Result<(), Box> { 137 | use StatusState::*; 138 | let state = run_test("metadata_success")?; 139 | assert_eq!( 140 | extract_status(&state.status), 141 | (Yellow, "Custom (yellow)".into(), 0) 142 | ); 143 | Ok(()) 144 | } 145 | 146 | /// Test if metadata is not set when the script fails. 147 | #[test] 148 | fn metadata_fail_test() -> Result<(), Box> { 149 | use StatusState::*; 150 | let state = run_test("metadata_fail")?; 151 | assert_eq!(extract_status(&state.status), (Red, "Failed".into(), 1)); 152 | Ok(()) 153 | } 154 | 155 | /// Tests if a complete group is correctly represented in the output. 156 | #[test] 157 | fn group_complete_test() -> Result<(), Box> { 158 | use StatusState::*; 159 | let state = run_test("group_complete")?; 160 | assert_eq!(extract_status(&state.status), (Green, "Success".into(), 0)); 161 | assert_eq!( 162 | extract_child_results(state), 163 | vec![ 164 | (Yellow, "Success".into(), 0), 165 | (Green, "Success".into(), 0), 166 | (Yellow, "Success".into(), 0), 167 | (Red, "Success".into(), 0) 168 | ] 169 | ); 170 | Ok(()) 171 | } 172 | 173 | /// Test whether the group adopts the parent script's results when the script failed. 174 | #[test] 175 | fn group_fail_test() -> Result<(), Box> { 176 | use StatusState::*; 177 | let state = run_test("group_fail")?; 178 | assert_eq!(extract_status(&state.status), (Red, "Failed".into(), 1)); 179 | assert_eq!( 180 | extract_child_results(state), 181 | vec![ 182 | (Red, "Failed".into(), 1), 183 | (Red, "Failed".into(), 1), 184 | (Red, "Failed".into(), 1), 185 | (Red, "Failed".into(), 1) 186 | ] 187 | ); 188 | Ok(()) 189 | } 190 | 191 | /// Tests whether the incomplete members of a group are correctly blanked out. 192 | #[test] 193 | fn group_incomplete_test() -> Result<(), Box> { 194 | use StatusState::*; 195 | let state = run_test("group_incomplete")?; 196 | assert_eq!(extract_status(&state.status), (Green, "Success".into(), 0)); 197 | assert_eq!( 198 | extract_child_results(state), 199 | vec![ 200 | (Yellow, "Success".into(), 0), 201 | (Green, "Success".into(), 0), 202 | (Yellow, "Success".into(), 0), 203 | (Blank, "".into(), 0) 204 | ] 205 | ); 206 | Ok(()) 207 | } 208 | } 209 | -------------------------------------------------------------------------------- /src/status.rs: -------------------------------------------------------------------------------- 1 | use std::collections::{BTreeMap, VecDeque}; 2 | use std::error::Error; 3 | use std::sync::Arc; 4 | 5 | use keepcalm::SharedMut; 6 | use serde::{Deserialize, Serialize}; 7 | 8 | use crate::config::*; 9 | use crate::interpolate::interpolate_modify; 10 | use crate::worker::LogStream; 11 | use crate::worker::WorkerMessage; 12 | 13 | #[derive(Clone, Copy, Debug, Serialize, Deserialize, PartialEq, PartialOrd)] 14 | #[serde(rename_all(serialize = "lowercase", deserialize = "lowercase"))] 15 | pub enum StatusState { 16 | Blank, 17 | Green, 18 | Yellow, 19 | Red, 20 | } 21 | 22 | #[derive(Clone, Debug, Serialize)] 23 | pub struct Status { 24 | pub config: Config, 25 | pub monitors: Vec>, 26 | } 27 | 28 | #[derive(Clone, Debug, Serialize, Deserialize)] 29 | pub struct MonitorState { 30 | pub id: String, 31 | pub config: MonitorDirTestConfig, 32 | #[serde(skip_serializing_if = "MonitorStatus::is_uninitialized")] 33 | pub status: MonitorStatus, 34 | #[serde(skip)] 35 | pub css: Option, 36 | pub children: BTreeMap, 37 | } 38 | 39 | #[derive(Clone, Debug, Serialize, Deserialize)] 40 | pub struct MonitorChildStatus { 41 | pub axes: BTreeMap, 42 | 43 | #[serde(skip_serializing_if = "MonitorStatus::is_uninitialized")] 44 | pub status: MonitorStatus, 45 | } 46 | 47 | #[derive(Clone, Debug, Default, Serialize, Deserialize)] 48 | pub struct MonitorStatus { 49 | pub status: Option, 50 | pub code: i64, 51 | pub description: String, 52 | pub css: MonitorCssStatus, 53 | pub metadata: BTreeMap, 54 | pub log: VecDeque, 55 | #[serde(skip)] 56 | pub pending: Option, 57 | } 58 | 59 | #[derive(Clone, Debug, Default, Serialize, Deserialize)] 60 | pub struct MonitorPendingStatus { 61 | pub status: Option, 62 | pub description: Option, 63 | pub metadata: Option>, 64 | } 65 | 66 | #[derive(Clone, Debug, Serialize, Deserialize)] 67 | pub struct MonitorCssStatus { 68 | pub metadata: Arc>, 69 | } 70 | 71 | impl Default for MonitorCssStatus { 72 | fn default() -> Self { 73 | Self { 74 | metadata: Arc::new(Default::default()), 75 | } 76 | } 77 | } 78 | 79 | impl MonitorState { 80 | /// Internal use only 81 | fn new_internal(id: String, config: MonitorDirTestConfig) -> Self { 82 | MonitorState { 83 | id, 84 | config, 85 | status: Default::default(), 86 | css: None, 87 | children: Default::default(), 88 | } 89 | } 90 | 91 | fn process_log_message ()>( 92 | &mut self, 93 | stream: &str, 94 | message: &str, 95 | direct_logger: &mut T, 96 | ) { 97 | let msg = format!("[{}] {}", stream, message); 98 | direct_logger(&msg); 99 | self.status.log.push_back(msg); 100 | } 101 | 102 | pub fn process_message ()>( 103 | &mut self, 104 | id: &str, 105 | msg: WorkerMessage, 106 | config: &CssMetadataConfig, 107 | direct_logger: &mut T, 108 | ) -> Result<(), Box> { 109 | debug!("[{}] Worker message {:?}", id, msg); 110 | match msg { 111 | WorkerMessage::Starting => { 112 | // Note that we don't update the state here 113 | self.status.pending = None; 114 | self.status.log.clear(); 115 | } 116 | WorkerMessage::LogMessage(stream, m) => { 117 | let stream = match stream { 118 | LogStream::StdOut => "stdout", 119 | LogStream::StdErr => "stderr", 120 | }; 121 | // TODO: Long lines without \n at the end should have some sort of other delimiter inserted 122 | self.process_log_message(stream, m.trim_end(), direct_logger); 123 | } 124 | WorkerMessage::Metadata(expr) => { 125 | // Make borrow checker happy 126 | let status = &mut self.status; 127 | let children = &mut self.children; 128 | if let Err(err) = interpolate_modify(status, children, &expr) { 129 | self.process_log_message("error ", &expr, direct_logger); 130 | self.process_log_message("error ", &err.to_string(), direct_logger); 131 | error!("Metadata update error: {}", err); 132 | } else { 133 | self.process_log_message("meta ", &expr.to_string(), direct_logger); 134 | } 135 | } 136 | WorkerMessage::AbnormalTermination(s) => { 137 | self.finish(StatusState::Yellow, -1, s, &config); 138 | } 139 | WorkerMessage::Termination(code) => { 140 | if code == 0 { 141 | self.finish(StatusState::Green, code, "Success".into(), &config); 142 | } else { 143 | self.finish(StatusState::Red, code, "Failed".into(), &config); 144 | } 145 | } 146 | } 147 | Ok(()) 148 | } 149 | 150 | fn finish( 151 | &mut self, 152 | status: StatusState, 153 | code: i64, 154 | description: String, 155 | config: &CssMetadataConfig, 156 | ) { 157 | self.css = None; 158 | 159 | for child in self.children.iter_mut() { 160 | let child_status = &mut child.1.status; 161 | if child_status.is_pending_status_set() || status != StatusState::Green { 162 | child_status.finish(status, code, description.clone(), &config); 163 | } else { 164 | child_status.finish(StatusState::Blank, code, "".into(), &config); 165 | } 166 | } 167 | 168 | self.status.finish(status, code, description, config); 169 | } 170 | } 171 | 172 | impl From<&MonitorDirConfig> for MonitorState { 173 | fn from(other: &MonitorDirConfig) -> Self { 174 | let mut state = MonitorState::new_internal(other.id.clone(), other.root.test().clone()); 175 | if let MonitorDirRootConfig::Group(ref group) = other.root { 176 | for child in group.children.iter() { 177 | state.children.insert( 178 | child.0.clone(), 179 | MonitorChildStatus { 180 | axes: child.1.axes.clone(), 181 | status: MonitorStatus::default(), 182 | }, 183 | ); 184 | } 185 | } 186 | state 187 | } 188 | } 189 | 190 | impl MonitorStatus { 191 | pub fn initialize(&mut self, config: &CssMetadataConfig) { 192 | self.description = "Unknown (initializing)".into(); 193 | self.status = Some(StatusState::Blank); 194 | self.css.metadata = config.blank.clone(); 195 | } 196 | 197 | pub fn is_pending_status_set(&self) -> bool { 198 | if let Some(ref pending) = self.pending { 199 | if pending.status.is_none() { 200 | return false; 201 | } 202 | } else { 203 | return false; 204 | } 205 | 206 | true 207 | } 208 | 209 | pub fn is_uninitialized(&self) -> bool { 210 | self.status.is_none() 211 | } 212 | 213 | fn finish( 214 | &mut self, 215 | status: StatusState, 216 | code: i64, 217 | description: String, 218 | config: &CssMetadataConfig, 219 | ) { 220 | let (pending_status, pending_description, pending_metadata) = self 221 | .pending 222 | .take() 223 | .map(|pending| (pending.status, pending.description, pending.metadata)) 224 | .unwrap_or_default(); 225 | self.code = code; 226 | 227 | // Start with the regular update 228 | self.status = Some(status); 229 | self.description = description; 230 | self.metadata.clear(); 231 | 232 | // Metadata/status can only be overwritten if the process terminated normally 233 | if status == StatusState::Green { 234 | if let Some(metadata) = pending_metadata { 235 | self.metadata = metadata; 236 | } 237 | if let Some(status) = pending_status { 238 | self.status = Some(status); 239 | } 240 | if let Some(description) = pending_description { 241 | self.description = description; 242 | } 243 | } 244 | 245 | // Update the CSS metadata with the final status 246 | if let Some(status) = self.status { 247 | self.css.metadata = match status { 248 | StatusState::Blank => config.blank.clone(), 249 | StatusState::Green => config.green.clone(), 250 | StatusState::Yellow => config.yellow.clone(), 251 | StatusState::Red => config.red.clone(), 252 | }; 253 | } 254 | } 255 | } 256 | -------------------------------------------------------------------------------- /src/testcases/group_complete/config.yaml: -------------------------------------------------------------------------------- 1 | group: 2 | id: port-{{ index }} 3 | axes: 4 | - name: index 5 | values: [0, 1, 2, 3] 6 | test: 7 | interval: 60s 8 | timeout: 30s 9 | command: test.sh 10 | -------------------------------------------------------------------------------- /src/testcases/group_complete/test.sh: -------------------------------------------------------------------------------- 1 | #!/bin/bash 2 | set -xeuf -o pipefail 3 | echo '@@STYLUS@@ group.port-0.status.status="yellow"' 4 | echo '@@STYLUS@@ group.port-1.status.status="green"' 5 | echo '@@STYLUS@@ group.port-2.status.status="yellow"' 6 | echo '@@STYLUS@@ group.port-3.status.status="red"' 7 | -------------------------------------------------------------------------------- /src/testcases/group_fail/config.yaml: -------------------------------------------------------------------------------- 1 | group: 2 | id: port-{{ index }} 3 | axes: 4 | - name: index 5 | values: [0, 1, 2, 3] 6 | test: 7 | interval: 60s 8 | timeout: 30s 9 | command: test.sh 10 | -------------------------------------------------------------------------------- /src/testcases/group_fail/test.sh: -------------------------------------------------------------------------------- 1 | #!/bin/bash 2 | set -xeuf -o pipefail 3 | echo '@@STYLUS@@ group.port-0.status.status="yellow"' 4 | echo '@@STYLUS@@ group.port-1.status.status="green"' 5 | echo '@@STYLUS@@ group.port-2.status.status="yellow"' 6 | exit 1 7 | -------------------------------------------------------------------------------- /src/testcases/group_incomplete/config.yaml: -------------------------------------------------------------------------------- 1 | group: 2 | id: port-{{ index }} 3 | axes: 4 | - name: index 5 | values: [0, 1, 2, 3] 6 | test: 7 | interval: 60s 8 | timeout: 30s 9 | command: test.sh 10 | -------------------------------------------------------------------------------- /src/testcases/group_incomplete/test.sh: -------------------------------------------------------------------------------- 1 | #!/bin/bash 2 | set -xeuf -o pipefail 3 | echo '@@STYLUS@@ group.port-0.status.status="yellow"' 4 | echo '@@STYLUS@@ group.port-1.status.status="green"' 5 | echo '@@STYLUS@@ group.port-2.status.status="yellow"' 6 | # Missing port-3! -------------------------------------------------------------------------------- /src/testcases/metadata_fail/config.yaml: -------------------------------------------------------------------------------- 1 | test: 2 | interval: 60s 3 | timeout: 30s 4 | command: test.sh 5 | -------------------------------------------------------------------------------- /src/testcases/metadata_fail/test.sh: -------------------------------------------------------------------------------- 1 | #!/bin/bash 2 | set -xeuf -o pipefail 3 | echo '@@STYLUS@@ status.description="Custom (yellow)"' 4 | echo '@@STYLUS@@ status.status="yellow"' 5 | echo '@@STYLUS@@ status.metadata.key="value1"' 6 | exit 1 -------------------------------------------------------------------------------- /src/testcases/metadata_success/config.yaml: -------------------------------------------------------------------------------- 1 | test: 2 | interval: 60s 3 | timeout: 30s 4 | command: test.sh 5 | -------------------------------------------------------------------------------- /src/testcases/metadata_success/test.sh: -------------------------------------------------------------------------------- 1 | #!/bin/bash 2 | set -xeuf -o pipefail 3 | echo '@@STYLUS@@ status.description="Custom (yellow)"' 4 | echo '@@STYLUS@@ status.status="yellow"' 5 | echo '@@STYLUS@@ status.metadata.key="value1"' 6 | -------------------------------------------------------------------------------- /src/testcases/v1.yaml: -------------------------------------------------------------------------------- 1 | version: 1 2 | server: 3 | port: 8000 4 | static: /tmp/ 5 | 6 | monitor: 7 | dir: /tmp/ 8 | 9 | css: 10 | # Use metadata to get prettier colors - note that we can add arbitrary string keys and values here 11 | metadata: 12 | red: 13 | color: "#fa897b" 14 | yellow: 15 | color: "#ffdd94" 16 | green: 17 | color: "#d0e6a5" 18 | rules: 19 | # Style the HTML/SVG with the appropriate status color 20 | - selectors: " 21 | #{{monitor.id}}, 22 | [data-monitor-id=\"{{monitor.id}}\"] > * 23 | " 24 | declarations: " 25 | background-color: {{monitor.status.css.metadata.color}} !important; 26 | fill: {{monitor.status.css.metadata.color}} !important; 27 | " 28 | # Add some text for the status/return value of the script 29 | - selectors: " 30 | #{{monitor.id}} td:nth-child(2)::after 31 | " 32 | declarations: " 33 | content: \"status={{monitor.status.status}} retval={{monitor.status.code}}\" 34 | " 35 | # Add the full description to the table 36 | - selectors: " 37 | #{{monitor.id}} td:nth-child(3)::after 38 | " 39 | declarations: " 40 | content: \"{{monitor.status.description}}\" 41 | " -------------------------------------------------------------------------------- /src/worker/linebuf.rs: -------------------------------------------------------------------------------- 1 | pub struct LineBuf { 2 | buf: Vec, 3 | buffer_size: usize, 4 | pending_cr: bool, 5 | } 6 | 7 | const LF: u8 = b'\n'; 8 | const CR: u8 = b'\r'; 9 | 10 | impl LineBuf { 11 | pub fn new(buffer_size: usize) -> Self { 12 | let buf = Vec::with_capacity(buffer_size); 13 | LineBuf { 14 | buf, 15 | buffer_size, 16 | pending_cr: false, 17 | } 18 | } 19 | 20 | pub fn accept(&mut self, bytes: &[u8], accept_lines: &mut T) { 21 | debug_assert!(self.buf.capacity() == self.buffer_size); 22 | for b in bytes.iter() { 23 | if *b == CR { 24 | self.pending_cr = true; 25 | } else if *b == LF { 26 | if self.pending_cr { 27 | // Ignore CR+LF 28 | self.pending_cr = false; 29 | } 30 | let mut out = self.buf.split_off(0); 31 | out.push(LF); 32 | (accept_lines)(String::from_utf8_lossy(&out).into()); 33 | } else { 34 | if self.pending_cr { 35 | self.buf.clear(); 36 | self.pending_cr = false; 37 | } 38 | if self.buf.len() == self.buf.capacity() { 39 | (accept_lines)(String::from_utf8_lossy(&self.buf).into()); 40 | self.buf.clear(); 41 | } 42 | self.buf.push(*b); 43 | } 44 | } 45 | debug_assert!(self.buf.capacity() == self.buffer_size); 46 | } 47 | 48 | pub fn close(self, accept_lines: &mut T) { 49 | if self.pending_cr { 50 | return; 51 | } 52 | if !self.buf.is_empty() { 53 | (accept_lines)(String::from_utf8_lossy(&self.buf).into()); 54 | } 55 | } 56 | } 57 | 58 | #[cfg(test)] 59 | pub mod tests { 60 | use super::*; 61 | 62 | fn test(s: &str, expected: Vec<&str>) { 63 | let mut lines = Vec::new(); 64 | let mut buf = LineBuf::new(40); 65 | buf.accept(&s.bytes().collect::>(), &mut |line| lines.push(line)); 66 | buf.close(&mut |line| lines.push(line)); 67 | assert_eq!(lines, expected); 68 | } 69 | 70 | #[test] 71 | fn test_short_lines() { 72 | test( 73 | "hello world\nbye world\n", 74 | vec!["hello world\n", "bye world\n"], 75 | ); 76 | } 77 | 78 | #[test] 79 | fn test_long_lines() { 80 | test( 81 | "01234567890123456789012345678901234567890123456789012345678901234567890123456789", 82 | vec![ 83 | "0123456789012345678901234567890123456789", 84 | "0123456789012345678901234567890123456789", 85 | ], 86 | ); 87 | test( 88 | "012345678901234567890123456789012345678901234567890123456789012345678901234567890", 89 | vec![ 90 | "0123456789012345678901234567890123456789", 91 | "0123456789012345678901234567890123456789", 92 | "0", 93 | ], 94 | ); 95 | test( 96 | "0123456789012345678901234567890123456789\n0123456789012345678901234567890123456789", 97 | vec![ 98 | "0123456789012345678901234567890123456789\n", 99 | "0123456789012345678901234567890123456789", 100 | ], 101 | ); 102 | test( 103 | "0123456789012345678901234567890123456789\n0123456789012345678901234567890123456789\n", 104 | vec![ 105 | "0123456789012345678901234567890123456789\n", 106 | "0123456789012345678901234567890123456789\n", 107 | ], 108 | ); 109 | test( 110 | "01234567890123456789012345678901234567890123456789012345678901234567890123456789\n", 111 | vec![ 112 | "0123456789012345678901234567890123456789", 113 | "0123456789012345678901234567890123456789\n", 114 | ], 115 | ); 116 | } 117 | 118 | #[test] 119 | fn test_empty() { 120 | test("", vec![]); 121 | } 122 | 123 | #[test] 124 | fn test_no_lf() { 125 | test("hello world", vec!["hello world"]); 126 | } 127 | 128 | #[test] 129 | fn test_cr_lf() { 130 | // DOS-style CR+LF 131 | test("hello world\r\n", vec!["hello world\n"]); 132 | test( 133 | "hello world\r\nbye world", 134 | vec!["hello world\n", "bye world"], 135 | ); 136 | test( 137 | "hello world\r\nbye world\r\n", 138 | vec!["hello world\n", "bye world\n"], 139 | ); 140 | } 141 | 142 | #[test] 143 | fn test_cr() { 144 | // cURL-style CR 145 | test("test1\rtest2\rtest3\n", vec!["test3\n"]); 146 | test("test1\rtest2\rtest3", vec!["test3"]); 147 | test("test1\rtest2\rtest3\r", vec![]); 148 | } 149 | } 150 | -------------------------------------------------------------------------------- /src/worker/mod.rs: -------------------------------------------------------------------------------- 1 | use std::error::Error; 2 | use std::ffi::{OsStr, OsString}; 3 | use std::path::Path; 4 | use std::sync::atomic::{AtomicBool, Ordering}; 5 | use std::thread; 6 | use std::time::{Duration, Instant}; 7 | 8 | use subprocess::{Exec, ExitStatus, Popen, Redirection}; 9 | 10 | use self::linebuf::LineBuf; 11 | use crate::config::*; 12 | 13 | mod linebuf; 14 | 15 | #[derive(Debug, Default, Display, Error)] 16 | pub struct ShuttingDown {} 17 | 18 | #[derive(Debug)] 19 | pub enum LogStream { 20 | StdOut, 21 | StdErr, 22 | } 23 | 24 | #[derive(Debug)] 25 | pub enum WorkerMessage { 26 | Starting, 27 | LogMessage(LogStream, String), 28 | Metadata(String), 29 | Termination(i64), 30 | AbnormalTermination(String), 31 | } 32 | 33 | pub fn monitor_thread Result<(), Box>>( 34 | monitor: MonitorDirConfig, 35 | mut sender: T, 36 | ) { 37 | loop { 38 | let (interval, res) = monitor_run(&monitor, &mut sender); 39 | if let Err(err) = res { 40 | // Break the loop on a task failure (but don't log ShuttingDown errors) 41 | if err.downcast_ref::().is_none() { 42 | error!("[{}] Task failure: {}", monitor.id, err); 43 | } 44 | if sender( 45 | &monitor.id, 46 | WorkerMessage::AbnormalTermination(err.to_string()), 47 | ) 48 | .is_err() 49 | { 50 | return; 51 | } 52 | } 53 | 54 | trace!("[{}] Sleeping {}ms", monitor.id, interval.as_millis()); 55 | thread::sleep(interval); 56 | } 57 | } 58 | 59 | pub fn monitor_run Result<(), Box>>( 60 | monitor: &MonitorDirConfig, 61 | sender: &mut T, 62 | ) -> (Duration, Result<(), Box>) { 63 | let args: Option<&[OsString]> = None; 64 | let test = monitor.root.test(); 65 | ( 66 | test.interval, 67 | monitor_thread_impl( 68 | &monitor.id, 69 | &test.command, 70 | &monitor.base_path, 71 | args, 72 | test.timeout, 73 | sender, 74 | ), 75 | ) 76 | } 77 | 78 | fn append( 79 | id: &str, 80 | f: &mut T, 81 | out: &mut Option>, 82 | stdout: &mut LineBuf, 83 | err: &mut Option>, 84 | stderr: &mut LineBuf, 85 | ) -> bool { 86 | if let (Some(out), Some(err)) = (out, err) { 87 | // Termination condition: "until read() returns all-empty data, which marks EOF." 88 | let done = out.is_empty() && err.is_empty(); 89 | if !done { 90 | // This is pretty noisy, so only trace if we have data 91 | trace!("[{}] read out={} err={}", id, out.len(), err.len()); 92 | } 93 | stdout.accept(out, &mut |s| f(LogStream::StdOut, s)); 94 | stderr.accept(err, &mut |s| f(LogStream::StdErr, s)); 95 | done 96 | } else { 97 | error!("[{}] null reader?", id); 98 | debug_assert!(false, "Unexpectedly null reads"); 99 | false 100 | } 101 | } 102 | 103 | enum DeathResult { 104 | ExitStatus(ExitStatus), 105 | Wedged(Popen), 106 | } 107 | 108 | fn aggressively_wait_for_death(id: &str, mut popen: Popen, duration: Duration) -> DeathResult { 109 | let r = popen.wait_timeout(duration); 110 | if let Ok(Some(status)) = r { 111 | // Easy, status was available right await 112 | debug!("[{}] Normal exit: {:?}", id, status); 113 | return DeathResult::ExitStatus(status); 114 | } 115 | 116 | // If we didn't get a result OR there was an error, let's try to terminate the process, ignoring any errors 117 | info!("[{}] Terminating process...", id); 118 | let _ = popen.terminate(); 119 | 120 | // Now give it 5 seconds to exit for good 121 | let r = popen.wait_timeout(Duration::from_millis(5000)); 122 | if let Ok(Some(_)) = r { 123 | // Always return the signal 124 | return DeathResult::ExitStatus(ExitStatus::Signaled(1)); 125 | } 126 | 127 | // Kill with prejudice 128 | info!("[{}] Killing process...", id); 129 | let _ = popen.kill(); 130 | 131 | // Give it another 5 seconds 132 | let r = popen.wait_timeout(Duration::from_millis(5000)); 133 | if let Ok(Some(_)) = r { 134 | // Always return the signal 135 | return DeathResult::ExitStatus(ExitStatus::Signaled(9)); 136 | } 137 | 138 | // This process is probably wedged and will become a zombie 139 | error!("[{}] Process wedged, bad things may happen", id); 140 | DeathResult::Wedged(popen) 141 | } 142 | 143 | fn process_log_message Result<(), Box>>( 144 | id: &str, 145 | failed: &AtomicBool, 146 | stream: LogStream, 147 | s: String, 148 | sender: &mut T, 149 | ) { 150 | const META_PREFIX: &str = "@@STYLUS@@"; 151 | 152 | let msg = if s.starts_with(META_PREFIX) { 153 | let s = s.split_at(META_PREFIX.len()).1; 154 | WorkerMessage::Metadata(s.trim().to_owned()) 155 | } else { 156 | WorkerMessage::LogMessage(stream, s) 157 | }; 158 | 159 | if sender(id, msg).is_err() { 160 | failed.store(true, Ordering::SeqCst) 161 | } 162 | } 163 | 164 | fn monitor_thread_impl Result<(), Box>>( 165 | id: &str, 166 | cmd: &Path, 167 | base_path: &Path, 168 | args: Option<&[impl AsRef]>, 169 | timeout: Duration, 170 | sender: &mut T, 171 | ) -> Result<(), Box> { 172 | // This will fail if we're supposed to shut down 173 | sender(id, WorkerMessage::Starting)?; 174 | 175 | debug!("[{}] Starting {:?}", id, cmd); 176 | 177 | let mut exec = Exec::cmd(cmd) 178 | .cwd(base_path) 179 | .env("STYLUS_MONITOR_ID", id) 180 | .stdout(Redirection::Pipe) 181 | .stderr(Redirection::Pipe); 182 | if let Some(args) = args { 183 | exec = exec.args(args); 184 | } 185 | let mut popen = exec.popen()?; 186 | 187 | let failed = AtomicBool::new(false); 188 | let mut f = |stream, s| { 189 | process_log_message(id, &failed, stream, s, sender); 190 | }; 191 | let mut stdout = LineBuf::new(80); 192 | let mut stderr = LineBuf::new(80); 193 | 194 | let start = Instant::now(); 195 | let mut comms = popen 196 | .communicate_start(None) 197 | .limit_time(Duration::from_millis(250)); 198 | 199 | while start.elapsed() < timeout { 200 | let mut r = comms.read(); 201 | if let Err(ref mut err) = r { 202 | if err.error.kind() == std::io::ErrorKind::TimedOut { 203 | if append( 204 | id, 205 | &mut f, 206 | &mut err.capture.0, 207 | &mut stdout, 208 | &mut err.capture.1, 209 | &mut stderr, 210 | ) { 211 | // We *might* have a completed process: need to check whether the return value is available or not 212 | if popen.poll().is_some() { 213 | debug!("[{}] Early completion", id); 214 | break; 215 | } 216 | } 217 | continue; 218 | } 219 | } 220 | let mut r = r?; 221 | if append(id, &mut f, &mut r.0, &mut stdout, &mut r.1, &mut stderr) { 222 | break; 223 | } 224 | } 225 | 226 | stdout.close(&mut |s| f(LogStream::StdOut, s)); 227 | stderr.close(&mut |s| f(LogStream::StdErr, s)); 228 | 229 | debug!("[{}] Finished read, waiting for status...", id); 230 | 231 | // Give the process reaper at least 250ms to get the exit code (or longer if the test timeout is still not elapsed) 232 | let timeout = Duration::max( 233 | Duration::from_millis(250), 234 | timeout 235 | .checked_sub(start.elapsed()) 236 | .unwrap_or(Duration::from_secs(0)), 237 | ); 238 | match aggressively_wait_for_death(id, popen, timeout) { 239 | DeathResult::ExitStatus(ExitStatus::Exited(code)) => { 240 | sender(id, WorkerMessage::Termination(code as i64))?; 241 | } 242 | DeathResult::ExitStatus(ExitStatus::Signaled(code)) => { 243 | sender( 244 | id, 245 | WorkerMessage::AbnormalTermination(format!("Process exited with signal {}", code)), 246 | )?; 247 | } 248 | DeathResult::ExitStatus(ExitStatus::Other(code)) => { 249 | sender( 250 | id, 251 | WorkerMessage::AbnormalTermination(format!( 252 | "Process exited for unknown reason {:x}", 253 | code 254 | )), 255 | )?; 256 | } 257 | DeathResult::ExitStatus(ExitStatus::Undetermined) => { 258 | sender( 259 | id, 260 | WorkerMessage::AbnormalTermination("Process exited for unknown reason".into()), 261 | )?; 262 | } 263 | DeathResult::Wedged(mut popen) => { 264 | sender( 265 | id, 266 | WorkerMessage::AbnormalTermination("Process timed out".into()), 267 | )?; 268 | // We can wait here after we notify the monitor system 269 | let _ = popen.wait(); 270 | } 271 | } 272 | 273 | Ok(()) 274 | } 275 | 276 | #[cfg(test)] 277 | mod tests { 278 | use super::*; 279 | use std::sync::mpsc::*; 280 | 281 | #[test] 282 | fn test_timeout() { 283 | let (tx, rx) = channel(); 284 | monitor_thread_impl( 285 | &"test".to_owned(), 286 | Path::new("/bin/sleep"), 287 | Path::new("/tmp"), 288 | Some(&["10"]), 289 | Duration::from_millis(250), 290 | &mut |_, m| { 291 | tx.send(m)?; 292 | Ok(()) 293 | }, 294 | ) 295 | .expect("Failed to monitor"); 296 | drop(tx); 297 | loop { 298 | if let Ok(msg) = rx.recv() { 299 | if let WorkerMessage::AbnormalTermination(_) = msg { 300 | return; 301 | } 302 | } else { 303 | panic!("Never got the abnormal termination error") 304 | } 305 | } 306 | } 307 | } 308 | --------------------------------------------------------------------------------