├── .gitignore ├── Dockerfile ├── LICENSE ├── README.md ├── cmd └── promremotecli │ └── main.go ├── go.mod ├── go.sum └── promremote ├── client.go └── client_test.go /.gitignore: -------------------------------------------------------------------------------- 1 | *~ 2 | *.out 3 | *.test 4 | *.xml 5 | *.swp 6 | .idea/ 7 | .vscode/ 8 | *.iml 9 | *.ipr 10 | *.iws 11 | *.cov 12 | *.html 13 | *.tmp 14 | .DS_Store 15 | test.log 16 | 17 | # Vendoring 18 | vendor/ 19 | 20 | # Build binaries 21 | bin/ 22 | 23 | # Debug binaries 24 | debug 25 | debug.test 26 | 27 | # Test data 28 | test-data 29 | 30 | # Coverage imports 31 | coverage_imports.go 32 | coverage/ 33 | 34 | # Binaries 35 | promremotecli 36 | 37 | -------------------------------------------------------------------------------- /Dockerfile: -------------------------------------------------------------------------------- 1 | # Stage 1: build 2 | FROM golang:1.12-alpine AS builder 3 | LABEL maintainer="The M3DB Authors " 4 | 5 | # Install Glide 6 | RUN apk add --update git 7 | 8 | # Add source code 9 | RUN mkdir -p /src/prometheus_remote_client_golang 10 | ADD . /src/prometheus_remote_client_golang 11 | 12 | # Build cli tool binary 13 | RUN cd /src/prometheus_remote_client_golang && \ 14 | go build github.com/m3db/prometheus_remote_client_golang/cmd/promremotecli 15 | 16 | # Stage 2: lightweight "release" 17 | FROM alpine:latest 18 | LABEL maintainer="The M3DB Authors " 19 | 20 | COPY --from=builder /src/prometheus_remote_client_golang/promremotecli /bin/promremotecli 21 | 22 | ENTRYPOINT [ "/bin/promremotecli" ] 23 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | Apache License 2 | Version 2.0, January 2004 3 | http://www.apache.org/licenses/ 4 | 5 | TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 6 | 7 | 1. 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The text should be enclosed in the appropriate 184 | comment syntax for the file format. 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 | # promremote 2 | 3 | `promremote` is a Prometheus remote write client written in Go. 4 | 5 | ## Installation 6 | 7 | `go get -u github.com/m3db/prometheus_remote_client_golang` 8 | 9 | ## Use 10 | 11 | `promremote` is used to send metrics to a Prometheus remote write endpoint such as supported by 12 | [m3coordinator](http://m3db.github.io/m3/overview/components/#m3-coordinator). It can be pulled into 13 | an existing codebase as a client library or used as a cli tool (`cmd/main.go`) for ad hoc testing 14 | purposes. 15 | 16 | **IMPORTANT:** A running program or application that has a Prometheus remote write endpoint is required. 17 | 18 | ### Client library 19 | 20 | To use `promremote` as a client library, the client must be constructed manually using structs. 21 | 22 | ```golang 23 | // create config and client 24 | cfg := promremote.NewConfig( 25 | promremote.WriteURLOption(writeURLFlag), 26 | promremote.HTTPClientTimeoutOption(60 * time.Second), 27 | promremote.UserAgent(userAgent), 28 | ) 29 | 30 | client, err := promremote.NewClient(cfg) 31 | if err != nil { 32 | log.Fatal(fmt.Errorf("unable to construct client: %v", err)) 33 | } 34 | 35 | 36 | timeSeriesList := []promremote.TimeSeries{ 37 | promremote.TimeSeries{ 38 | Labels: []promremote.Label{ 39 | { 40 | Name: "__name__", 41 | Value: "foo_bar", 42 | }, 43 | { 44 | Name: "biz", 45 | Value: "baz", 46 | }, 47 | }, 48 | Datapoint: promremote.Datapoint{ 49 | Timestamp: time.Now(), 50 | Value: 1415.92, 51 | }, 52 | }, 53 | } 54 | 55 | if err := client.WriteTimeSeries(timeSeriesList); err != nil { 56 | log.Fatal(err) 57 | } 58 | ``` 59 | 60 | ### CLI 61 | 62 | If one wants to use `promremote` as a CLI, he or she can utilize the tool located in the `cmd/` 63 | directory. The tool takes in a series of labels and a datapoint then writes them to a Prometheus 64 | remote write endpoint. Below is an example showing a metric with two labels 65 | (`__name__:foo_bar` and `biz:baz`) and a datapoint (timestamp:`now` value:`1415.92`). 66 | 67 | **Note**: One can either specify a Unix timestamp (e.g. `1556026725`) or the keyword `now` as the 68 | first parameter in the `-d` flag. 69 | 70 | ```bash 71 | go run cmd/promremotecli/main.go -t=__name__:foo_bar -t=biz:baz -d=now,1415.92 72 | ``` 73 | -------------------------------------------------------------------------------- /cmd/promremotecli/main.go: -------------------------------------------------------------------------------- 1 | // Copyright (c) 2019 Uber Technologies, Inc. 2 | // 3 | // Permission is hereby granted, free of charge, to any person obtaining a copy 4 | // of this software and associated documentation files (the "Software"), to deal 5 | // in the Software without restriction, including without limitation the rights 6 | // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 7 | // copies of the Software, and to permit persons to whom the Software is 8 | // furnished to do so, subject to the following conditions: 9 | // 10 | // The above copyright notice and this permission notice shall be included in 11 | // all copies or substantial portions of the Software. 12 | // 13 | // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 14 | // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 15 | // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 16 | // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 17 | // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 18 | // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 19 | // THE SOFTWARE. 20 | 21 | package main 22 | 23 | import ( 24 | "context" 25 | "encoding/json" 26 | "flag" 27 | "fmt" 28 | stdlog "log" 29 | "os" 30 | "strconv" 31 | "strings" 32 | "time" 33 | 34 | "github.com/m3db/prometheus_remote_client_golang/promremote" 35 | ) 36 | 37 | type labelList []promremote.Label 38 | type headerList []header 39 | type dp promremote.Datapoint 40 | 41 | type header struct { 42 | name string 43 | value string 44 | } 45 | 46 | func main() { 47 | var ( 48 | log = stdlog.New(os.Stderr, "promremotecli_log ", stdlog.LstdFlags) 49 | writeURLFlag string 50 | labelsListFlag labelList 51 | headerListFlag headerList 52 | dpFlag dp 53 | ) 54 | 55 | flag.StringVar(&writeURLFlag, "u", promremote.DefaultRemoteWrite, "remote write endpoint") 56 | flag.Var(&labelsListFlag, "t", "label pair to include in metric. specify as key:value e.g. status_code:200") 57 | flag.Var(&headerListFlag, "h", "headers to set in the request, e.g. 'User-Agent: foo'") 58 | flag.Var(&dpFlag, "d", "datapoint to add. specify as unixTimestamp(int),value(float) e.g. 1556026059,14.23. use `now` instead of timestamp for current time") 59 | 60 | flag.Parse() 61 | 62 | tsList := promremote.TSList{ 63 | { 64 | Labels: []promremote.Label(labelsListFlag), 65 | Datapoint: promremote.Datapoint(dpFlag), 66 | }, 67 | } 68 | 69 | cfg := promremote.NewConfig( 70 | promremote.WriteURLOption(writeURLFlag), 71 | ) 72 | 73 | client, err := promremote.NewClient(cfg) 74 | if err != nil { 75 | log.Fatal(fmt.Errorf("unable to construct client: %v", err)) 76 | } 77 | 78 | var headers map[string]string 79 | log.Println("writing datapoint", dpFlag.String()) 80 | log.Println("labelled", labelsListFlag.String()) 81 | if len(headerListFlag) > 0 { 82 | log.Println("with headers", headerListFlag.String()) 83 | headers = make(map[string]string, len(headerListFlag)) 84 | for _, header := range headerListFlag { 85 | headers[header.name] = header.value 86 | } 87 | } 88 | log.Println("writing to", writeURLFlag) 89 | 90 | result, writeErr := client.WriteTimeSeries(context.Background(), tsList, 91 | promremote.WriteOptions{Headers: headers}) 92 | if err := error(writeErr); err != nil { 93 | json.NewEncoder(os.Stdout).Encode(struct { 94 | Success bool `json:"success"` 95 | Error string `json:"error"` 96 | StatusCode int `json:"statusCode"` 97 | }{ 98 | Success: false, 99 | Error: err.Error(), 100 | StatusCode: writeErr.StatusCode(), 101 | }) 102 | os.Stdout.Sync() 103 | 104 | log.Fatal("write error", err) 105 | } 106 | 107 | json.NewEncoder(os.Stdout).Encode(struct { 108 | Success bool `json:"success"` 109 | StatusCode int `json:"statusCode"` 110 | }{ 111 | Success: true, 112 | StatusCode: result.StatusCode, 113 | }) 114 | os.Stdout.Sync() 115 | 116 | log.Println("write success") 117 | } 118 | 119 | func (t *labelList) String() string { 120 | var labels [][]string 121 | for _, v := range []promremote.Label(*t) { 122 | labels = append(labels, []string{v.Name, v.Value}) 123 | } 124 | return fmt.Sprintf("%v", labels) 125 | } 126 | 127 | func (t *labelList) Set(value string) error { 128 | labelPair := strings.Split(value, ":") 129 | if len(labelPair) != 2 { 130 | return fmt.Errorf("incorrect number of arguments to '-t': %d", len(labelPair)) 131 | } 132 | 133 | label := promremote.Label{ 134 | Name: labelPair[0], 135 | Value: labelPair[1], 136 | } 137 | 138 | *t = append(*t, label) 139 | 140 | return nil 141 | } 142 | 143 | func (h *headerList) String() string { 144 | var headers [][]string 145 | for _, v := range []header(*h) { 146 | headers = append(headers, []string{v.name, v.value}) 147 | } 148 | return fmt.Sprintf("%v", headers) 149 | } 150 | 151 | func (h *headerList) Set(value string) error { 152 | firstSplit := strings.Index(value, ":") 153 | if firstSplit == -1 { 154 | return fmt.Errorf("header missing separating colon: '%v'", value) 155 | } 156 | 157 | *h = append(*h, header{ 158 | name: strings.TrimSpace(value[:firstSplit]), 159 | value: strings.TrimSpace(value[firstSplit+1:]), 160 | }) 161 | 162 | return nil 163 | } 164 | 165 | func (d *dp) String() string { 166 | return fmt.Sprintf("%v", []string{d.Timestamp.String(), fmt.Sprintf("%v", d.Value)}) 167 | } 168 | 169 | func (d *dp) Set(value string) error { 170 | dp := strings.Split(value, ",") 171 | if len(dp) != 2 { 172 | return fmt.Errorf("incorrect number of arguments to '-d': %d", len(dp)) 173 | } 174 | 175 | var ts time.Time 176 | if strings.ToLower(dp[0]) == "now" { 177 | ts = time.Now() 178 | } else { 179 | i, err := strconv.Atoi(dp[0]) 180 | if err != nil { 181 | return fmt.Errorf("unable to parse timestamp: %s", dp[1]) 182 | } 183 | ts = time.Unix(int64(i), 0) 184 | } 185 | 186 | val, err := strconv.ParseFloat(dp[1], 64) 187 | if err != nil { 188 | return fmt.Errorf("unable to parse value as float64: %s", dp[0]) 189 | } 190 | 191 | d.Timestamp = ts 192 | d.Value = val 193 | 194 | return nil 195 | } 196 | -------------------------------------------------------------------------------- /go.mod: -------------------------------------------------------------------------------- 1 | module github.com/m3db/prometheus_remote_client_golang 2 | 3 | require ( 4 | github.com/golang/protobuf v1.3.2 5 | github.com/golang/snappy v0.0.1 6 | github.com/prometheus/prometheus v0.0.0-20190818123050-43acd0e2e93f 7 | github.com/stretchr/testify v1.3.0 8 | ) 9 | -------------------------------------------------------------------------------- /go.sum: -------------------------------------------------------------------------------- 1 | cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw= 2 | cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw= 3 | cloud.google.com/go v0.38.0/go.mod h1:990N+gfupTy94rShfmMCWGDn0LpTmnzTp2qbd1dvSRU= 4 | cloud.google.com/go v0.44.1/go.mod h1:iSa0KzasP4Uvy3f1mN/7PiObzGgflwredwwASm/v6AU= 5 | contrib.go.opencensus.io/exporter/ocagent v0.6.0/go.mod h1:zmKjrJcdo0aYcVS7bmEeSEBLPA9YJp5bjrofdU3pIXs= 6 | github.com/Azure/azure-sdk-for-go v23.2.0+incompatible/go.mod h1:9XXNKU+eRnpl9moKnB4QOLf1HestfXbmab5FXxiDBjc= 7 | github.com/Azure/go-autorest v11.1.2+incompatible/go.mod h1:r+4oMnoxhatjLLJ6zxSWATqVooLgysK6ZNox3g/xq24= 8 | github.com/Azure/go-autorest v11.2.8+incompatible/go.mod h1:r+4oMnoxhatjLLJ6zxSWATqVooLgysK6ZNox3g/xq24= 9 | github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU= 10 | github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo= 11 | github.com/DataDog/datadog-go v2.2.0+incompatible/go.mod h1:LButxg5PwREeZtORoXG3tL4fMGNddJ+vMq1mwgfaqoQ= 12 | github.com/NYTimes/gziphandler v0.0.0-20170623195520-56545f4a5d46/go.mod h1:3wb06e3pkSAbeQ52E9H9iFoQsEEwGN64994WTCIhntQ= 13 | github.com/OneOfOne/xxhash v1.2.2/go.mod h1:HSdplMjZKSmBqAxg5vPj2TmRDmfkzw+cTzAElWljhcU= 14 | github.com/OneOfOne/xxhash v1.2.5/go.mod h1:eZbhyaAYD41SGSSsnmcpxVoRiQ/MPUTjUdIIOT9Um7Q= 15 | github.com/PuerkitoBio/purell v1.0.0/go.mod h1:c11w/QuzBsJSee3cPx9rAFu61PvFxuPbtSwDGJws/X0= 16 | github.com/PuerkitoBio/purell v1.1.0/go.mod h1:c11w/QuzBsJSee3cPx9rAFu61PvFxuPbtSwDGJws/X0= 17 | github.com/PuerkitoBio/purell v1.1.1/go.mod h1:c11w/QuzBsJSee3cPx9rAFu61PvFxuPbtSwDGJws/X0= 18 | github.com/PuerkitoBio/urlesc v0.0.0-20160726150825-5bd2802263f2/go.mod h1:uGdkoq3SwY9Y+13GIhn11/XLaGBb4BfwItxLd5jeuXE= 19 | github.com/PuerkitoBio/urlesc v0.0.0-20170810143723-de5bf2ad4578/go.mod h1:uGdkoq3SwY9Y+13GIhn11/XLaGBb4BfwItxLd5jeuXE= 20 | github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc= 21 | 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h1:zfwlbNMJ+OItoe0UupaVj+oy1omPYYDuagoSzA8v9mc= 153 | github.com/google/uuid v1.0.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo= 154 | github.com/google/uuid v1.1.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo= 155 | github.com/google/uuid v1.1.1/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo= 156 | github.com/googleapis/gax-go/v2 v2.0.4/go.mod h1:0Wqv26UfaUD9n4G6kQubkQ+KchISgw+vpHVxEJEs9eg= 157 | github.com/googleapis/gax-go/v2 v2.0.5/go.mod h1:DWXyrwAJ9X0FpwwEdw+IPEYBICEFu5mhpdKc/us6bOk= 158 | github.com/googleapis/gnostic v0.0.0-20170426233943-68f4ded48ba9/go.mod h1:sJBsCZ4ayReDTBIg8b9dl28c5xFWyhBTVRp3pOg5EKY= 159 | github.com/googleapis/gnostic v0.0.0-20170729233727-0c5108395e2d/go.mod h1:sJBsCZ4ayReDTBIg8b9dl28c5xFWyhBTVRp3pOg5EKY= 160 | github.com/googleapis/gnostic v0.3.0/go.mod h1:sJBsCZ4ayReDTBIg8b9dl28c5xFWyhBTVRp3pOg5EKY= 161 | github.com/gophercloud/gophercloud v0.0.0-20190126172459-c818fa66e4c8/go.mod 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google.golang.org/grpc v1.22.1 h1:/7cs52RnTJmD43s3uxzlq2U7nqVTd/37viQwMrMNlOM= 442 | google.golang.org/grpc v1.22.1/go.mod h1:Y5yQAOtifL1yxbo5wqy6BxZv8vAUGQwXBOALyacEbxg= 443 | gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLkstjWtayDeSgw= 444 | gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0= 445 | gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0= 446 | gopkg.in/fsnotify.v1 v1.4.7/go.mod h1:Tz8NjZHkW78fSQdbUxIjBTcgA1z1m8ZHf0WmKUhAMys= 447 | gopkg.in/fsnotify/fsnotify.v1 v1.4.7/go.mod h1:Fyux9zXlo4rWoMSIzpn9fDAYjalPqJ/K1qJ27s+7ltE= 448 | gopkg.in/inf.v0 v0.9.0/go.mod h1:cWUDdTG/fYaXco+Dcufb5Vnc6Gp2YChqWtbxRZE0mXw= 449 | gopkg.in/inf.v0 v0.9.1/go.mod h1:cWUDdTG/fYaXco+Dcufb5Vnc6Gp2YChqWtbxRZE0mXw= 450 | gopkg.in/resty.v1 v1.12.0/go.mod h1:mDo4pnntr5jdWRML875a/NmxYqAlA73dVijT2AXvQQo= 451 | gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw= 452 | gopkg.in/yaml.v2 v2.0.0-20170812160011-eb3733d160e7/go.mod h1:JAlM8MvJe8wmxCU4Bli9HhUf9+ttbYbLASfIpnQbh74= 453 | gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= 454 | gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= 455 | honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4= 456 | honnef.co/go/tools v0.0.0-20190106161140-3f1c8253044a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4= 457 | honnef.co/go/tools v0.0.0-20190418001031-e561f6794a2a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4= 458 | honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4= 459 | k8s.io/api v0.0.0-20190620084959-7cf5895f2711/go.mod h1:TBhBqb1AWbBQbW3XRusr7n7E4v2+5ZY8r8sAMnyFC5A= 460 | k8s.io/api v0.0.0-20190813020757-36bff7324fb7/go.mod h1:3Iy+myeAORNCLgjd/Xu9ebwN7Vh59Bw0vh9jhoX+V58= 461 | k8s.io/apimachinery v0.0.0-20190612205821-1799e75a0719/go.mod h1:I4A+glKBHiTgiEjQiCCQfCAIcIMFGt291SmsvcrFzJA= 462 | k8s.io/apimachinery v0.0.0-20190809020650-423f5d784010/go.mod h1:Waf/xTS2FGRrgXCkO5FP3XxTOWh0qLf2QhL1qFZZ/R8= 463 | k8s.io/client-go v12.0.0+incompatible/go.mod h1:E95RaSlHr79aHaX0aGSwcPNfygDiPKOVXdmivCIZT0k= 464 | k8s.io/gengo v0.0.0-20190128074634-0689ccc1d7d6/go.mod h1:ezvh/TsK7cY6rbqRK0oQQ8IAqLxYwwyPxAX1Pzy0ii0= 465 | k8s.io/klog v0.0.0-20181102134211-b9b56d5dfc92/go.mod h1:Gq+BEi5rUBO/HRz0bTSXDUcqjScdoY3a9IHpCEIOOfk= 466 | k8s.io/klog v0.3.0/go.mod h1:Gq+BEi5rUBO/HRz0bTSXDUcqjScdoY3a9IHpCEIOOfk= 467 | k8s.io/klog v0.3.1/go.mod h1:Gq+BEi5rUBO/HRz0bTSXDUcqjScdoY3a9IHpCEIOOfk= 468 | k8s.io/klog v0.4.0/go.mod h1:4Bi6QPql/J/LkTDqv7R/cd3hPo4k2DG6Ptcz060Ez5I= 469 | k8s.io/kube-openapi v0.0.0-20190228160746-b3a7cee44a30/go.mod h1:BXM9ceUBTj2QnfH2MK1odQs778ajze1RxcmP6S8RVVc= 470 | k8s.io/kube-openapi v0.0.0-20190709113604-33be087ad058/go.mod h1:nfDlWeOsu3pUf4yWGL+ERqohP4YsZcBJXWMK+gkzOA4= 471 | k8s.io/kube-openapi v0.0.0-20190722073852-5e22f3d471e6/go.mod h1:RZvgC8MSN6DjiMV6oIfEE9pDL9CYXokkfaCKZeHm3nc= 472 | k8s.io/utils v0.0.0-20190221042446-c2654d5206da/go.mod h1:8k8uAuAQ0rXslZKaEWd0c3oVhZz7sSzSiPnVZayjIX0= 473 | k8s.io/utils v0.0.0-20190809000727-6c36bc71fc4a/go.mod h1:sZAwmy6armz5eXlNoLmJcl4F1QuKu7sr+mFQ0byX7Ew= 474 | rsc.io/binaryregexp v0.2.0/go.mod h1:qTv7/COck+e2FymRvadv62gMdZztPaShugOCi3I+8D8= 475 | sigs.k8s.io/structured-merge-diff v0.0.0-20190525122527-15d366b2352e/go.mod h1:wWxsB5ozmmv/SG7nM11ayaAW51xMvak/t1r0CSlcokI= 476 | sigs.k8s.io/yaml v1.1.0/go.mod h1:UJmg0vDUVViEyp3mgSv9WPwZCDxu4rQW1olrI1uml+o= 477 | -------------------------------------------------------------------------------- /promremote/client.go: -------------------------------------------------------------------------------- 1 | // Copyright (c) 2019 Uber Technologies, Inc. 2 | // 3 | // Permission is hereby granted, free of charge, to any person obtaining a copy 4 | // of this software and associated documentation files (the "Software"), to deal 5 | // in the Software without restriction, including without limitation the rights 6 | // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 7 | // copies of the Software, and to permit persons to whom the Software is 8 | // furnished to do so, subject to the following conditions: 9 | // 10 | // The above copyright notice and this permission notice shall be included in 11 | // all copies or substantial portions of the Software. 12 | // 13 | // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 14 | // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 15 | // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 16 | // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 17 | // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 18 | // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 19 | // THE SOFTWARE. 20 | 21 | package promremote 22 | 23 | import ( 24 | "bytes" 25 | "context" 26 | "errors" 27 | "fmt" 28 | "io/ioutil" 29 | "net/http" 30 | "time" 31 | 32 | "github.com/golang/protobuf/proto" 33 | "github.com/golang/snappy" 34 | "github.com/prometheus/prometheus/prompb" 35 | ) 36 | 37 | const ( 38 | // DefaultRemoteWrite is the default Prom remote write endpoint in m3coordinator. 39 | DefaultRemoteWrite = "http://localhost:7201/api/v1/prom/remote/write" 40 | 41 | defaulHTTPClientTimeout = 30 * time.Second 42 | defaultUserAgent = "promremote-go/1.0.0" 43 | ) 44 | 45 | // DefaultConfig represents the default configuration used to construct a client. 46 | var DefaultConfig = Config{ 47 | WriteURL: DefaultRemoteWrite, 48 | HTTPClientTimeout: defaulHTTPClientTimeout, 49 | UserAgent: defaultUserAgent, 50 | } 51 | 52 | // Label is a metric label. 53 | type Label struct { 54 | Name string 55 | Value string 56 | } 57 | 58 | // TimeSeries are made of labels and a datapoint. 59 | type TimeSeries struct { 60 | Labels []Label 61 | Datapoint Datapoint 62 | } 63 | 64 | // TSList is a slice of TimeSeries. 65 | type TSList []TimeSeries 66 | 67 | // A Datapoint is a single data value reported at a given time. 68 | type Datapoint struct { 69 | Timestamp time.Time 70 | Value float64 71 | } 72 | 73 | // Client is used to write timeseries data to a Prom remote write endpoint 74 | // such as the one in m3coordinator. 75 | type Client interface { 76 | // WriteProto writes the Prom proto WriteRequest to the specified endpoint. 77 | WriteProto( 78 | ctx context.Context, 79 | req *prompb.WriteRequest, 80 | opts WriteOptions, 81 | ) (WriteResult, WriteError) 82 | 83 | // WriteTimeSeries converts the []TimeSeries to Protobuf then writes it to the specified endpoint. 84 | WriteTimeSeries( 85 | ctx context.Context, 86 | ts TSList, 87 | opts WriteOptions, 88 | ) (WriteResult, WriteError) 89 | } 90 | 91 | // WriteOptions specifies additional write options. 92 | type WriteOptions struct { 93 | // Headers to append or override the outgoing headers. 94 | Headers map[string]string 95 | } 96 | 97 | // WriteResult returns the successful HTTP status code. 98 | type WriteResult struct { 99 | StatusCode int 100 | } 101 | 102 | // WriteError is an error that can also return the HTTP status code 103 | // if the response is what caused an error. 104 | type WriteError interface { 105 | error 106 | StatusCode() int 107 | } 108 | 109 | // Config defines the configuration used to construct a client. 110 | type Config struct { 111 | // WriteURL is the URL which the client uses to write to m3coordinator. 112 | WriteURL string `yaml:"writeURL"` 113 | 114 | //HTTPClientTimeout is the timeout that is set for the client. 115 | HTTPClientTimeout time.Duration `yaml:"httpClientTimeout"` 116 | 117 | // If not nil, http client is used instead of constructing one. 118 | HTTPClient *http.Client 119 | 120 | // UserAgent is the `User-Agent` header in the request. 121 | UserAgent string `yaml:"userAgent"` 122 | } 123 | 124 | // ConfigOption defines a config option that can be used when constructing a client. 125 | type ConfigOption func(*Config) 126 | 127 | // NewConfig creates a new Config struct based on options passed to the function. 128 | func NewConfig(opts ...ConfigOption) Config { 129 | cfg := DefaultConfig 130 | for _, opt := range opts { 131 | opt(&cfg) 132 | } 133 | 134 | return cfg 135 | } 136 | 137 | func (c Config) validate() error { 138 | if c.HTTPClientTimeout <= 0 { 139 | return fmt.Errorf("http client timeout should be greater than 0: %d", c.HTTPClientTimeout) 140 | } 141 | 142 | if c.WriteURL == "" { 143 | return errors.New("remote write URL should not be blank") 144 | } 145 | 146 | if c.UserAgent == "" { 147 | return errors.New("User-Agent should not be blank") 148 | } 149 | 150 | return nil 151 | } 152 | 153 | // WriteURLOption sets the URL which the client uses to write to m3coordinator. 154 | func WriteURLOption(writeURL string) ConfigOption { 155 | return func(c *Config) { 156 | c.WriteURL = writeURL 157 | } 158 | } 159 | 160 | // HTTPClientTimeoutOption sets the timeout that is set for the client. 161 | func HTTPClientTimeoutOption(httpClientTimeout time.Duration) ConfigOption { 162 | return func(c *Config) { 163 | c.HTTPClientTimeout = httpClientTimeout 164 | } 165 | } 166 | 167 | // HTTPClientOption sets the HTTP client that is set for the client. 168 | func HTTPClientOption(httpClient *http.Client) ConfigOption { 169 | return func(c *Config) { 170 | c.HTTPClient = httpClient 171 | } 172 | } 173 | 174 | // UserAgent sets the `User-Agent` header in the request. 175 | func UserAgent(userAgent string) ConfigOption { 176 | return func(c *Config) { 177 | c.UserAgent = userAgent 178 | } 179 | } 180 | 181 | type client struct { 182 | writeURL string 183 | httpClient *http.Client 184 | userAgent string 185 | } 186 | 187 | // NewClient creates a new remote write coordinator client. 188 | func NewClient(c Config) (Client, error) { 189 | if err := c.validate(); err != nil { 190 | return nil, err 191 | } 192 | 193 | httpClient := &http.Client{ 194 | Timeout: c.HTTPClientTimeout, 195 | } 196 | 197 | if c.HTTPClient != nil { 198 | httpClient = c.HTTPClient 199 | } 200 | 201 | return &client{ 202 | writeURL: c.WriteURL, 203 | httpClient: httpClient, 204 | }, nil 205 | } 206 | 207 | func (c *client) WriteTimeSeries( 208 | ctx context.Context, 209 | seriesList TSList, 210 | opts WriteOptions, 211 | ) (WriteResult, WriteError) { 212 | return c.WriteProto(ctx, seriesList.toPromWriteRequest(), opts) 213 | } 214 | 215 | func (c *client) WriteProto( 216 | ctx context.Context, 217 | promWR *prompb.WriteRequest, 218 | opts WriteOptions, 219 | ) (WriteResult, WriteError) { 220 | var result WriteResult 221 | data, err := proto.Marshal(promWR) 222 | if err != nil { 223 | return result, writeError{err: fmt.Errorf("unable to marshal protobuf: %v", err)} 224 | } 225 | 226 | encoded := snappy.Encode(nil, data) 227 | 228 | body := bytes.NewReader(encoded) 229 | req, err := http.NewRequest("POST", c.writeURL, body) 230 | if err != nil { 231 | return result, writeError{err: err} 232 | } 233 | 234 | req.Header.Set("Content-Type", "application/x-protobuf") 235 | req.Header.Set("Content-Encoding", "snappy") 236 | req.Header.Set("User-Agent", c.userAgent) 237 | req.Header.Set("X-Prometheus-Remote-Write-Version", "0.1.0") 238 | if opts.Headers != nil { 239 | for k, v := range opts.Headers { 240 | req.Header.Set(k, v) 241 | } 242 | } 243 | 244 | resp, err := c.httpClient.Do(req.WithContext(ctx)) 245 | if err != nil { 246 | return result, writeError{err: err} 247 | } 248 | 249 | result.StatusCode = resp.StatusCode 250 | 251 | defer resp.Body.Close() 252 | 253 | if result.StatusCode/100 != 2 { 254 | writeErr := writeError{ 255 | err: fmt.Errorf("expected HTTP 200 status code: actual=%d", resp.StatusCode), 256 | code: result.StatusCode, 257 | } 258 | 259 | body, err := ioutil.ReadAll(resp.Body) 260 | if err != nil { 261 | writeErr.err = fmt.Errorf("%v, body_read_error=%s", writeErr.err, err) 262 | return result, writeErr 263 | } 264 | 265 | writeErr.err = fmt.Errorf("%v, body=%s", writeErr.err, body) 266 | return result, writeErr 267 | } 268 | 269 | return result, nil 270 | } 271 | 272 | // toPromWriteRequest converts a list of timeseries to a Prometheus proto write request. 273 | func (t TSList) toPromWriteRequest() *prompb.WriteRequest { 274 | promTS := make([]prompb.TimeSeries, len(t)) 275 | 276 | for i, ts := range t { 277 | labels := make([]prompb.Label, len(ts.Labels)) 278 | for j, label := range ts.Labels { 279 | labels[j] = prompb.Label{Name: label.Name, Value: label.Value} 280 | } 281 | 282 | sample := []prompb.Sample{prompb.Sample{ 283 | // Timestamp is int milliseconds for remote write. 284 | Timestamp: ts.Datapoint.Timestamp.UnixNano() / int64(time.Millisecond), 285 | Value: ts.Datapoint.Value, 286 | }} 287 | promTS[i] = prompb.TimeSeries{Labels: labels, Samples: sample} 288 | } 289 | 290 | return &prompb.WriteRequest{ 291 | Timeseries: promTS, 292 | } 293 | } 294 | 295 | type writeError struct { 296 | err error 297 | code int 298 | } 299 | 300 | func (e writeError) Error() string { 301 | return e.err.Error() 302 | } 303 | 304 | // StatusCode returns the HTTP status code of the error if error 305 | // was caused by the response, otherwise it will be just zero. 306 | func (e writeError) StatusCode() int { 307 | return e.code 308 | } 309 | -------------------------------------------------------------------------------- /promremote/client_test.go: -------------------------------------------------------------------------------- 1 | // Copyright (c) 2019 Uber Technologies, Inc. 2 | // 3 | // Permission is hereby granted, free of charge, to any person obtaining a copy 4 | // of this software and associated documentation files (the "Software"), to deal 5 | // in the Software without restriction, including without limitation the rights 6 | // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 7 | // copies of the Software, and to permit persons to whom the Software is 8 | // furnished to do so, subject to the following conditions: 9 | // 10 | // The above copyright notice and this permission notice shall be included in 11 | // all copies or substantial portions of the Software. 12 | // 13 | // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 14 | // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 15 | // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 16 | // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 17 | // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 18 | // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 19 | // THE SOFTWARE. 20 | 21 | package promremote 22 | 23 | import ( 24 | "context" 25 | "io/ioutil" 26 | "net/http" 27 | "net/http/httptest" 28 | "testing" 29 | "time" 30 | 31 | "github.com/golang/protobuf/proto" 32 | "github.com/golang/snappy" 33 | "github.com/prometheus/prometheus/prompb" 34 | "github.com/stretchr/testify/assert" 35 | "github.com/stretchr/testify/require" 36 | ) 37 | 38 | var ( 39 | now = time.Now() 40 | nowMillis = now.UnixNano() / int64(time.Millisecond) 41 | ) 42 | 43 | func TestPromRemoteClientWrite(t *testing.T) { 44 | overrideUserAgent := "overrideUserAgent" 45 | customHeaders := map[string]string{ 46 | "M3-Metrics-Type": "unaggregated", 47 | "User-Agent": overrideUserAgent, 48 | } 49 | 50 | testServer := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) { 51 | assert.Equal(t, "snappy", r.Header.Get("Content-Encoding")) 52 | assert.Equal(t, "application/x-protobuf", r.Header.Get("Content-Type")) 53 | assert.Equal(t, overrideUserAgent, r.Header.Get("User-Agent")) 54 | for k, v := range customHeaders { 55 | assert.Equal(t, v, r.Header.Get(k)) 56 | } 57 | 58 | defer r.Body.Close() 59 | 60 | bodyBytes, err := ioutil.ReadAll(r.Body) 61 | require.NoError(t, err) 62 | 63 | decoded, err := snappy.Decode(nil, bodyBytes) 64 | require.NoError(t, err) 65 | 66 | newWR := &prompb.WriteRequest{} 67 | err = proto.Unmarshal(decoded, newWR) 68 | require.NoError(t, err) 69 | 70 | assert.Len(t, newWR.Timeseries, 1) 71 | assert.Len(t, newWR.Timeseries[0].Labels, 2) 72 | assert.Len(t, newWR.Timeseries[0].Samples, 1) 73 | assert.Equal(t, "__name__", newWR.Timeseries[0].Labels[0].Name) 74 | assert.Equal(t, "foo_bar", newWR.Timeseries[0].Labels[0].Value) 75 | assert.Equal(t, "biz", newWR.Timeseries[0].Labels[1].Name) 76 | assert.Equal(t, "baz", newWR.Timeseries[0].Labels[1].Value) 77 | assert.Equal(t, 1415.92, newWR.Timeseries[0].Samples[0].Value) 78 | assert.Equal(t, nowMillis, newWR.Timeseries[0].Samples[0].Timestamp) 79 | })) 80 | 81 | defer testServer.Close() 82 | 83 | cfg := NewConfig( 84 | WriteURLOption(testServer.URL), 85 | ) 86 | 87 | c, err := NewClient(cfg) 88 | require.NoError(t, err) 89 | 90 | tsList := TSList{ 91 | { 92 | Labels: []Label{ 93 | { 94 | Name: "__name__", 95 | Value: "foo_bar", 96 | }, 97 | { 98 | Name: "biz", 99 | Value: "baz", 100 | }, 101 | }, 102 | Datapoint: Datapoint{ 103 | Timestamp: now, 104 | Value: 1415.92, 105 | }, 106 | }, 107 | } 108 | 109 | r, err := c.WriteTimeSeries(context.Background(), tsList, 110 | WriteOptions{Headers: customHeaders}) 111 | require.NoError(t, err) 112 | require.Equal(t, http.StatusOK, r.StatusCode) 113 | } 114 | 115 | func TestPromRemoteClientWriteNotHTTPOK(t *testing.T) { 116 | testServer := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) { 117 | w.WriteHeader(http.StatusBadRequest) 118 | })) 119 | 120 | defer testServer.Close() 121 | 122 | cfg := NewConfig( 123 | WriteURLOption(testServer.URL), 124 | ) 125 | 126 | c, err := NewClient(cfg) 127 | require.NoError(t, err) 128 | 129 | tsList := TSList{ 130 | { 131 | Labels: []Label{ 132 | { 133 | Name: "__name__", 134 | Value: "foo_bar", 135 | }, 136 | { 137 | Name: "biz", 138 | Value: "baz", 139 | }, 140 | }, 141 | Datapoint: Datapoint{ 142 | Timestamp: now, 143 | Value: 1415.92, 144 | }, 145 | }, 146 | } 147 | 148 | r, writeErr := c.WriteTimeSeries(context.Background(), tsList, 149 | WriteOptions{}) 150 | require.Error(t, writeErr) 151 | require.Equal(t, http.StatusBadRequest, writeErr.StatusCode()) 152 | require.Equal(t, http.StatusBadRequest, r.StatusCode) 153 | } 154 | 155 | func TestValidateConfig(t *testing.T) { 156 | cfg := NewConfig( 157 | HTTPClientTimeoutOption(-1 * time.Second), 158 | ) 159 | 160 | _, err := NewClient(cfg) 161 | require.Error(t, err) 162 | 163 | cfg = NewConfig( 164 | WriteURLOption(""), 165 | ) 166 | 167 | _, err = NewClient(cfg) 168 | require.Error(t, err) 169 | } 170 | 171 | func TestProvidedHTTPClient(t *testing.T) { 172 | cfg := NewConfig( 173 | HTTPClientOption(&http.Client{ 174 | Timeout: 10 * time.Second, 175 | }), 176 | ) 177 | 178 | _, err := NewClient(cfg) 179 | require.NoError(t, err) 180 | } 181 | --------------------------------------------------------------------------------