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This repository was archived by the owner on Jan 6, 2023. It is now read-only.

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Thomas Poignant
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Init repo
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‎.gitignore

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# Binaries for programs and plugins
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*.exe
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*.exe~
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*.dll
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*.so
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*.dylib
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# Test binary, built with `go test -c`
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*.test
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# Output of the go coverage tool, specifically when used with LiteIDE
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*.out
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# Dependency directories
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vendor/
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# IDE
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.DS_Store
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.vscode
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.idea
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*.iml
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.run
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# reporting stuff
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*-report.xml
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*.cov
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coverage.xml
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bin/
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out/
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tmp/

‎LICENSE

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MIT License
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Copyright (c) 2022 Thomas Poignant
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.

‎README.md

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# GO Feature Flag demo
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This repository contains a demo app which display a webapp containing a grid of users.
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Each square is a different user.
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With this demo app you can modify your flag and visually see which users are impacted by the change.
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‎css/style.css

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*{
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margin:0;
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padding:0;
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border:0;
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}
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table{
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height:100%;
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position:absolute;
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}
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.red{
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background-color: red;
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border: 1px black solid;
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}
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.green{
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background-color: lawngreen;
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border: 1px black solid;
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}
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.grey{
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background-color: lightgrey;
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border: 1px black solid;
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}

‎docs/demo.mp4

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‎flags.yaml

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color-box:
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percentage: 100
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true: green
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false: red
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default: grey
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disable: false

‎go-feature-flag-demo

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‎go.mod

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module go-feature-flag-demo
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go 1.17
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require github.com/thomaspoignant/go-feature-flag v0.22.2
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require (
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cloud.google.com/go v0.100.2 // indirect
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cloud.google.com/go/compute v1.6.0 // indirect
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cloud.google.com/go/iam v0.3.0 // indirect
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cloud.google.com/go/storage v1.22.0 // indirect
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github.com/antlr/antlr4 v0.0.0-20201206235148-c87e55b61113 // indirect
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github.com/aws/aws-sdk-go v1.44.5 // indirect
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github.com/blang/semver v3.5.1+incompatible // indirect
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github.com/golang/groupcache v0.0.0-20200121045136-8c9f03a8e57e // indirect
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github.com/golang/protobuf v1.5.2 // indirect
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github.com/google/go-cmp v0.5.8 // indirect
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github.com/google/uuid v1.3.0 // indirect
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github.com/googleapis/gax-go/v2 v2.3.0 // indirect
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github.com/googleapis/go-type-adapters v1.0.0 // indirect
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github.com/jmespath/go-jmespath v0.4.0 // indirect
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github.com/labstack/echo/v4 v4.7.2 // indirect
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github.com/labstack/gommon v0.3.1 // indirect
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github.com/mattn/go-colorable v0.1.11 // indirect
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github.com/mattn/go-isatty v0.0.14 // indirect
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github.com/nikunjy/rules v0.0.0-20200120082459-0b7c4dc9dc86 // indirect
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github.com/pelletier/go-toml v1.9.5 // indirect
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github.com/valyala/bytebufferpool v1.0.0 // indirect
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github.com/valyala/fasttemplate v1.2.1 // indirect
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go.opencensus.io v0.23.0 // indirect
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golang.org/x/crypto v0.0.0-20210817164053-32db794688a5 // indirect
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golang.org/x/net v0.0.0-20220412020605-290c469a71a5 // indirect
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golang.org/x/oauth2 v0.0.0-20220411215720-9780585627b5 // indirect
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golang.org/x/sys v0.0.0-20220412211240-33da011f77ad // indirect
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golang.org/x/text v0.3.7 // indirect
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golang.org/x/xerrors v0.0.0-20220411194840-2f41105eb62f // indirect
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google.golang.org/api v0.77.0 // indirect
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google.golang.org/appengine v1.6.7 // indirect
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google.golang.org/genproto v0.0.0-20220414192740-2d67ff6cf2b4 // indirect
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google.golang.org/grpc v1.45.0 // indirect
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google.golang.org/protobuf v1.28.0 // indirect
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gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b // indirect
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)

‎go.sum

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‎js/script.js

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setTimeout(function () { location.reload(1); }, 500)

‎main.go

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package main
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import (
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"context"
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"flag"
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"fmt"
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"github.com/google/uuid"
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"github.com/labstack/echo/v4"
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"github.com/thomaspoignant/go-feature-flag"
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"github.com/thomaspoignant/go-feature-flag/ffuser"
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"html/template"
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"io"
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"net/http"
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"time"
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)
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var users = make(map[string]ffuser.User, 2500)
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func main() {
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configFile := flag.String("configFile", "./flags.yaml", "flags.yaml")
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flag.Parse()
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_ = ffclient.Init(ffclient.Config{
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PollingInterval: 1 * time.Second,
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Context: context.Background(),
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Retriever: &ffclient.FileRetriever{
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Path: *configFile,
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},
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})
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// Instantiate a template registry and register all html files inside the view folder
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e := echo.New()
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e.HideBanner = true
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e.Static("/js", "js")
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e.Static("/css", "css")
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e.Renderer = &TemplateRegistry{templates: template.Must(template.ParseGlob("view/*.html"))}
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// init ids
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for i := 0; i < 2500; i++ {
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id := uuid.New()
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u := ffuser.NewUser(id.String())
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users[fmt.Sprintf("user%d", i)] = u
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}
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e.GET("/", apiHandler)
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e.Logger.Fatal(e.Start(":8080"))
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}
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type TemplateRegistry struct {
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templates *template.Template
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}
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func (t *TemplateRegistry) Render(w io.Writer, name string, data interface{}, c echo.Context) error {
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return t.templates.ExecuteTemplate(w, name, data)
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}
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func apiHandler(c echo.Context) error {
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mapToRender := make(map[string]string, 2500)
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for k, user := range users {
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color, _ := ffclient.StringVariation("color-box", user, "grey")
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mapToRender[k] = color
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}
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return c.Render(http.StatusOK, "template.html", mapToRender)
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}

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