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Add the slack notification binary in the scripts/ folder
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‎scripts/slack_notification_action.go

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// Code taken from https://github.com/rtCamp/action-slack-notify
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// at revision c753c784. MIT Licensed, Copyright 2019
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package main
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import (
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"bytes"
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"encoding/json"
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"fmt"
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"net/http"
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"os"
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"strings"
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)
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const (
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EnvSlackWebhook = "SLACK_WEBHOOK"
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EnvSlackIcon = "SLACK_ICON"
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EnvSlackIconEmoji = "SLACK_ICON_EMOJI"
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EnvSlackChannel = "SLACK_CHANNEL"
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EnvSlackTitle = "SLACK_TITLE"
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EnvSlackMessage = "SLACK_MESSAGE"
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EnvSlackColor = "SLACK_COLOR"
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EnvSlackUserName = "SLACK_USERNAME"
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EnvSlackFooter = "SLACK_FOOTER"
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EnvGithubActor = "GITHUB_ACTOR"
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EnvSiteName = "SITE_NAME"
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EnvHostName = "HOST_NAME"
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EnvMinimal = "MSG_MINIMAL"
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EnvSlackLinkNames = "SLACK_LINK_NAMES"
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)
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type Webhook struct {
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Text string `json:"text,omitempty"`
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UserName string `json:"username,omitempty"`
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IconURL string `json:"icon_url,omitempty"`
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IconEmoji string `json:"icon_emoji,omitempty"`
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Channel string `json:"channel,omitempty"`
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LinkNames string `json:"link_names,omitempty"`
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UnfurlLinks bool `json:"unfurl_links"`
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Attachments []Attachment `json:"attachments,omitempty"`
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}
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type Attachment struct {
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Fallback string `json:"fallback"`
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Pretext string `json:"pretext,omitempty"`
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Color string `json:"color,omitempty"`
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AuthorName string `json:"author_name,omitempty"`
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AuthorLink string `json:"author_link,omitempty"`
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AuthorIcon string `json:"author_icon,omitempty"`
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Footer string `json:"footer,omitempty"`
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Fields []Field `json:"fields,omitempty"`
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}
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type Field struct {
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Title string `json:"title,omitempty"`
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Value string `json:"value,omitempty"`
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Short bool `json:"short,omitempty"`
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}
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func main() {
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endpoint := os.Getenv(EnvSlackWebhook)
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if endpoint == "" {
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fmt.Fprintln(os.Stderr, "URL is required")
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os.Exit(1)
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}
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text := os.Getenv(EnvSlackMessage)
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if text == "" {
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fmt.Fprintln(os.Stderr, "Message is required")
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os.Exit(1)
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}
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if strings.HasPrefix(os.Getenv("GITHUB_WORKFLOW"), ".github") {
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os.Setenv("GITHUB_WORKFLOW", "Link to action run")
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}
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long_sha := os.Getenv("GITHUB_SHA")
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commit_sha := long_sha[0:6]
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minimal := os.Getenv(EnvMinimal)
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fields := []Field{}
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if minimal == "true" {
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mainFields := []Field{
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{
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Title: os.Getenv(EnvSlackTitle),
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Value: envOr(EnvSlackMessage, "EOM"),
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Short: false,
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},
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}
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fields = append(mainFields, fields...)
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} else if minimal != "" {
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requiredFields := strings.Split(minimal, ",")
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mainFields := []Field{
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{
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Title: os.Getenv(EnvSlackTitle),
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Value: envOr(EnvSlackMessage, "EOM"),
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Short: false,
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},
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}
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for _, requiredField := range requiredFields {
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switch strings.ToLower(requiredField) {
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case "ref":
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field := []Field{
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{
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Title: "Ref",
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Value: os.Getenv("GITHUB_REF"),
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Short: true,
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},
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}
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mainFields = append(field, mainFields...)
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case "event":
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field := []Field{
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{
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Title: "Event",
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Value: os.Getenv("GITHUB_EVENT_NAME"),
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Short: true,
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},
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}
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mainFields = append(field, mainFields...)
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case "actions url":
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field := []Field{
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{
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Title: "Actions URL",
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Value: "<" + os.Getenv("GITHUB_SERVER_URL") + "/" + os.Getenv("GITHUB_REPOSITORY") + "/commit/" + os.Getenv("GITHUB_SHA") + "/checks|" + os.Getenv("GITHUB_WORKFLOW") + ">",
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Short: true,
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},
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}
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mainFields = append(field, mainFields...)
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case "commit":
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field := []Field{
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{
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Title: "Commit",
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Value: "<" + os.Getenv("GITHUB_SERVER_URL") + "/" + os.Getenv("GITHUB_REPOSITORY") + "/commit/" + os.Getenv("GITHUB_SHA") + "|" + commit_sha + ">",
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Short: true,
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},
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}
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mainFields = append(field, mainFields...)
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}
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}
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fields = append(mainFields, fields...)
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} else {
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mainFields := []Field{
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{
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Title: "Ref",
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Value: os.Getenv("GITHUB_REF"),
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Short: true,
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}, {
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Title: "Event",
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Value: os.Getenv("GITHUB_EVENT_NAME"),
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Short: true,
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},
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{
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Title: "Actions URL",
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Value: "<" + os.Getenv("GITHUB_SERVER_URL") + "/" + os.Getenv("GITHUB_REPOSITORY") + "/commit/" + os.Getenv("GITHUB_SHA") + "/checks|" + os.Getenv("GITHUB_WORKFLOW") + ">",
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Short: true,
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},
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{
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Title: "Commit",
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Value: "<" + os.Getenv("GITHUB_SERVER_URL") + "/" + os.Getenv("GITHUB_REPOSITORY") + "/commit/" + os.Getenv("GITHUB_SHA") + "|" + commit_sha + ">",
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Short: true,
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},
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{
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Title: os.Getenv(EnvSlackTitle),
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Value: envOr(EnvSlackMessage, "EOM"),
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Short: false,
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},
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}
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fields = append(mainFields, fields...)
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}
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hostName := os.Getenv(EnvHostName)
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if hostName != "" {
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newfields := []Field{
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{
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Title: os.Getenv("SITE_TITLE"),
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Value: os.Getenv(EnvSiteName),
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Short: true,
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},
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{
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Title: os.Getenv("HOST_TITLE"),
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Value: os.Getenv(EnvHostName),
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Short: true,
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},
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}
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fields = append(newfields, fields...)
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}
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color := ""
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switch os.Getenv(EnvSlackColor) {
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case "success":
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color = "good"
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case "cancelled":
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color = "#808080"
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case "failure":
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color = "danger"
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default:
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color = envOr(EnvSlackColor, "good")
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}
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msg := Webhook{
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UserName: os.Getenv(EnvSlackUserName),
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IconURL: os.Getenv(EnvSlackIcon),
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IconEmoji: os.Getenv(EnvSlackIconEmoji),
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Channel: os.Getenv(EnvSlackChannel),
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LinkNames: os.Getenv(EnvSlackLinkNames),
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Attachments: []Attachment{
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{
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Fallback: envOr(EnvSlackMessage, "GITHUB_ACTION="+os.Getenv("GITHUB_ACTION")+" \n GITHUB_ACTOR="+os.Getenv("GITHUB_ACTOR")+" \n GITHUB_EVENT_NAME="+os.Getenv("GITHUB_EVENT_NAME")+" \n GITHUB_REF="+os.Getenv("GITHUB_REF")+" \n GITHUB_REPOSITORY="+os.Getenv("GITHUB_REPOSITORY")+" \n GITHUB_WORKFLOW="+os.Getenv("GITHUB_WORKFLOW")),
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Color: color,
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AuthorName: envOr(EnvGithubActor, ""),
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AuthorLink: os.Getenv("GITHUB_SERVER_URL") + "/" + os.Getenv(EnvGithubActor),
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AuthorIcon: os.Getenv("GITHUB_SERVER_URL") + "/" + os.Getenv(EnvGithubActor) + ".png?size=32",
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Footer: envOr(EnvSlackFooter, "<https://github.com/rtCamp/github-actions-library|Powered By rtCamp's GitHub Actions Library>"),
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Fields: fields,
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},
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},
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}
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if err := send(endpoint, msg); err != nil {
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fmt.Fprintf(os.Stderr, "Error sending message: %s\n", err)
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os.Exit(2)
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}
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}
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func envOr(name, def string) string {
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if d, ok := os.LookupEnv(name); ok {
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return d
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}
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return def
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}
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func send(endpoint string, msg Webhook) error {
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enc, err := json.Marshal(msg)
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if err != nil {
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return err
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}
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b := bytes.NewBuffer(enc)
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res, err := http.Post(endpoint, "application/json", b)
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if err != nil {
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return err
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}
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if res.StatusCode >= 299 {
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return fmt.Errorf("Error on message: %s\n", res.Status)
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}
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fmt.Println(res.Status)
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return nil
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}

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