feat: support Google Cloud Build

go.mod

@@ -15,7 +15,7 @@ require (
 	github.com/sirupsen/logrus v1.9.0
 	github.com/stretchr/testify v1.7.5
 	github.com/suzuki-shunsuke/github-comment-metadata v0.1.0
-	github.com/suzuki-shunsuke/go-ci-env v1.1.0
+	github.com/suzuki-shunsuke/go-ci-env/v3 v3.0.0
 	github.com/suzuki-shunsuke/go-error-with-exit-code v1.0.0
 	github.com/suzuki-shunsuke/go-httpclient v1.0.0
 	github.com/suzuki-shunsuke/go-timeout v1.0.0

go.sum

@@ -189,8 +189,8 @@ github.com/suzuki-shunsuke/flute/v2 v2.0.0 h1:cDpi+h9wceJuOEjOxTvZNQXsIS+lv2Ism4
 github.com/suzuki-shunsuke/flute/v2 v2.0.0/go.mod h1:wsUAUZbz+DSjv+XDv/gZeEX/mMu1y9kzIXCN5Slu6NY=
 github.com/suzuki-shunsuke/github-comment-metadata v0.1.0 h1:89uGvBINoWZ4p2dGj7S695bm/L1H175eMp/D47ltSPs=
 github.com/suzuki-shunsuke/github-comment-metadata v0.1.0/go.mod h1:GNDhEmWAJ6Bbk9rIds0mAMF4noyPV3EqwqLetnEoNLg=
-github.com/suzuki-shunsuke/go-ci-env v1.1.0 h1:eGpItM2bEDtHFXYYEm8zz+kDGxWlhOtwNK58cREa1QU=
-github.com/suzuki-shunsuke/go-ci-env v1.1.0/go.mod h1:kO9UgcQIAH4Pu4ESkUJHPuQEtesxHPKkpQqeJHJzzdk=
+github.com/suzuki-shunsuke/go-ci-env/v3 v3.0.0 h1:DoYPwXHqvWDcU4zB4d81ed1q1MsYrsknTco5qP3+ivM=
+github.com/suzuki-shunsuke/go-ci-env/v3 v3.0.0/go.mod h1:VmLj5u0w7Yf/IJIzZ+TWiB7mVT3pRKPMeb0Jssk7YsA=
 github.com/suzuki-shunsuke/go-cliutil v0.0.0-20181211154308-176f852d9bca/go.mod h1:Vq3NkhgmA9DT/2UZ08x/3A34xxvzQ/vTMABnTWKoMbY=
 github.com/suzuki-shunsuke/go-error-with-exit-code v1.0.0 h1:oVXrrYNGBq4POyITQNWKzwsYz7B2nUcqtDbeX4BfeEc=
 github.com/suzuki-shunsuke/go-error-with-exit-code v1.0.0/go.mod h1:kDFtLeftDiIUUHXGI3xq5eJ+uAOi50FPrxPENTHktJ0=

pkg/platform/google_cloud_build.go

@@ -0,0 +1,89 @@
+package platform
+
+import (
+	"fmt"
+	"os"
+	"strconv"
+
+	"github.com/suzuki-shunsuke/go-ci-env/v3/cienv"
+)
+
+type GoogleCloudBuild struct {
+	getenv func(string) string
+}
+
+func NewGoogleCloudBuild(param *cienv.Param) *GoogleCloudBuild {
+	if param == nil || param.Getenv == nil {
+		return &GoogleCloudBuild{
+			getenv: os.Getenv,
+		}
+	}
+	return &GoogleCloudBuild{
+		getenv: param.Getenv,
+	}
+}
+
+func (cb *GoogleCloudBuild) ID() string {
+	return "google-cloud-build"
+}
+
+func (cb *GoogleCloudBuild) Match() bool {
+	return cb.getenv("GOOGLE_CLOUD_BUILD") != ""
+}
+
+func (cb *GoogleCloudBuild) RepoOwner() string {
+	return ""
+}
+
+func (cb *GoogleCloudBuild) RepoName() string {
+	return ""
+}
+
+func (cb *GoogleCloudBuild) Ref() string {
+	return ""
+}
+
+func (cb *GoogleCloudBuild) Tag() string {
+	return ""
+}
+
+func (cb *GoogleCloudBuild) Branch() string {
+	return ""
+}
+
+func (cb *GoogleCloudBuild) PRBaseBranch() string {
+	return ""
+}
+
+func (cb *GoogleCloudBuild) SHA() string {
+	return cb.getenv("COMMIT_SHA")
+}
+
+func (cb *GoogleCloudBuild) IsPR() bool {
+	return cb.getenv("_PR_NUMBER") != ""
+}
+
+func (cb *GoogleCloudBuild) PRNumber() (int, error) {
+	pr := cb.getenv("_PR_NUMBER")
+	if pr == "" {
+		return 0, nil
+	}
+	b, err := strconv.Atoi(pr)
+	if err == nil {
+		return b, nil
+	}
+	return 0, fmt.Errorf("_PR_NUMBER is invalid. It failed to parse _PR_NUMBER as an integer: %w", err)
+}
+
+func (cb *GoogleCloudBuild) JobURL() string {
+	region := cb.getenv("_REGION")
+	if region == "" {
+		region = "global"
+	}
+	return fmt.Sprintf(
+		"https://console.cloud.google.com/cloud-build/builds;region=%s/%s?project=%s",
+		region,
+		cb.getenv("BUILD_ID"),
+		cb.getenv("PROJECT_ID"),
+	)
+}

pkg/platform/platform.go

@@ -6,7 +6,7 @@ import (
 	"strconv"
 
 	"github.com/suzuki-shunsuke/github-comment/pkg/option"
-	"github.com/suzuki-shunsuke/go-ci-env/cienv"
+	"github.com/suzuki-shunsuke/go-ci-env/v3/cienv"
 )
 
 type Platform struct {
@@ -116,16 +116,19 @@ func (pt *Platform) CI() string {
 	if pt.platform == nil {
 		return ""
 	}
-	return pt.platform.CI()
+	return pt.platform.ID()
 }
 
 func (pt *Platform) ComplementExec(opts *option.ExecOptions) error {
 	return pt.complement(&opts.Options)
 }
 
 func Get(param *Param) *Platform {
+	cienv.Add(func(param *cienv.Param) cienv.Platform {
+		return NewGoogleCloudBuild(param)
+	})
 	return &Platform{
-		platform: cienv.Get(),
+		platform: cienv.Get(nil),
 		generic: &generic{
 			param: param,
 		},

pkg/template/template.go

@@ -4,6 +4,7 @@ import (
 	"bytes"
 	"fmt"
 	"html/template"
+	"os"
 	"strings"
 
 	"github.com/Masterminds/sprig/v3"
@@ -17,11 +18,21 @@ type ParamGetTemplates struct {
 }
 
 func GetTemplates(param *ParamGetTemplates) map[string]string {
+	cloudBuildRegion := os.Getenv("_REGION")
+	if cloudBuildRegion == "" {
+		cloudBuildRegion = "global"
+	}
 	buildLinks := map[string]string{
 		"circleci":       `[workflow](https://circleci.com/workflow-run/{{env "CIRCLE_WORKFLOW_ID" }}) [job]({{env "CIRCLE_BUILD_URL"}}) (job: {{env "CIRCLE_JOB"}})`,
 		"codebuild":      `[Build link]({{env "CODEBUILD_BUILD_URL"}})`,
 		"drone":          `[build]({{env "DRONE_BUILD_LINK"}}) [step]({{env "DRONE_BUILD_LINK"}}/{{env "DRONE_STAGE_NUMBER"}}/{{env "DRONE_STEP_NUMBER"}})`,
 		"github-actions": `[Build link](https://github.com/{{env "GITHUB_REPOSITORY"}}/actions/runs/{{env "GITHUB_RUN_ID"}})`,
+		"google-cloud-build": fmt.Sprintf(
+			"[Build link](https://console.cloud.google.com/cloud-build/builds;region=%s/%s?project=%s)",
+			cloudBuildRegion,
+			os.Getenv("BUILD_ID"),
+			os.Getenv("PROJECT_ID"),
+		),
 	}
 
 	builtinTemplates := map[string]string{