[fix] Fixed git var extraction. [add] using short hash for commit reference

.github/workflows/build.yaml

@@ -23,5 +23,7 @@ jobs:
         uses: actions/setup-go@v2
         with:
           go-version: ${{ matrix.go-version }}
+      - name: Make test
+        run: make test
       - name: Make all
         run: make all

Makefile

@@ -21,6 +21,9 @@ all: dist hash
 gofmt:
 	@test -z $(shell gofmt -l -s $(SOURCE_DIRS) ./ | tee /dev/stderr) || (echo "[WARN] Fix formatting issues with 'make fmt'" && exit 1)
 
+test:
+	$(GOCMD) test -count=1 -v ./cmd/.
+
 build:
 	$(GOCMD) build .
 

cmd/root.go

@@ -71,14 +71,14 @@ func init() {
 	} else {
 		ref, _ := r.Head()
 		refHash := ref.Hash().String()
+		defaultGitCommit = getShortHash(refHash, 7)
 		remotes, _ := r.Remotes()
-		remoteUsed := remotes[0].Config().URLs[0]
-		toOrg := remoteUsed[:strings.LastIndex(remoteUsed, "/")]
-		defaultGitOrg = toOrg[strings.LastIndexAny(toOrg, "/:")+1:]
-		repoStartPos := strings.LastIndex(remoteUsed, "/") + 1
-		defaultGitRepo = remoteUsed[repoStartPos : len(remoteUsed)-4]
-		defaultGitCommit = refHash
-		log.Printf("Detected the following git vars org=%s repo=%s hash=%s\n", defaultGitOrg, defaultGitRepo, defaultGitCommit)
+		if len(remotes) > 0 {
+			remoteUsed := remotes[0].Config().URLs[0]
+			log.Printf("Detected a total of %d remotes. Using the 1st remote url %s to retrieve git info", len(remotes), remoteUsed)
+			defaultGitOrg, defaultGitRepo = fromRemoteToOrgRepo(remoteUsed)
+			log.Printf("Detected the following git vars org=%s repo=%s hash=%s\n", defaultGitOrg, defaultGitRepo, defaultGitCommit)
+		}
 	}
 
 	// Here you will define your flags and configuration settings.
@@ -97,6 +97,29 @@ func init() {
 	rootCmd.MarkPersistentFlagRequired("bench")
 }
 
+// Abbreviate the long hash to a short hash (7 digits)
+func getShortHash(hash string, ndigits int) (short string) {
+	if len(hash) < ndigits {
+		short = hash
+	} else {
+		short = hash[:ndigits]
+	}
+	return
+}
+
+func fromRemoteToOrgRepo(remoteUsed string) (defaultGitOrg string, defaultGitRepo string) {
+	toOrg := remoteUsed[:strings.LastIndex(remoteUsed, "/")]
+	defaultGitOrg = toOrg[strings.LastIndexAny(toOrg, "/:")+1:]
+	repoStartPos := strings.LastIndex(remoteUsed, "/") + 1
+	repoEndPos := strings.LastIndex(remoteUsed[repoStartPos:], ".")
+	if repoEndPos < 0 {
+		defaultGitRepo = remoteUsed[repoStartPos:]
+	} else {
+		defaultGitRepo = remoteUsed[repoStartPos : repoStartPos+repoEndPos]
+	}
+	return
+}
+
 // initConfig reads in config file and ENV variables if set.
 func initConfig() {
 	if cfgFile != "" {

cmd/root_test.go

@@ -0,0 +1,56 @@
+package cmd
+
+import "testing"
+
+func Test_fromRemoteToOrgRepo(t *testing.T) {
+	type args struct {
+		remoteUsed string
+	}
+	tests := []struct {
+		name               string
+		args               args
+		wantDefaultGitOrg  string
+		wantDefaultGitRepo string
+	}{
+		{"git", args{"[email protected]:codeperfio/pprof-exporter.git"}, "codeperfio", "pprof-exporter"},
+		{"git-neg", args{"[email protected]:codeperfio/pprof-exporter"}, "codeperfio", "pprof-exporter"},
+		{"git-neg2", args{"github.com:codeperfio/pprof-exporter"}, "codeperfio", "pprof-exporter"},
+		{"codeperfio/example-go", args{"[email protected]:codeperfio/example-go.git"}, "codeperfio", "example-go"},
+		{"codeperfio/example-go-https", args{"https://github.com/codeperfio/example-go.git"}, "codeperfio", "example-go"},
+		{"codeperfio/example-go-https-neg", args{"https://github.com/codeperfio/example-go"}, "codeperfio", "example-go"},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			gotDefaultGitOrg, gotDefaultGitRepo := fromRemoteToOrgRepo(tt.args.remoteUsed)
+			if gotDefaultGitOrg != tt.wantDefaultGitOrg {
+				t.Errorf("fromRemoteToOrgRepo() gotDefaultGitOrg = %v, want %v", gotDefaultGitOrg, tt.wantDefaultGitOrg)
+			}
+			if gotDefaultGitRepo != tt.wantDefaultGitRepo {
+				t.Errorf("fromRemoteToOrgRepo() gotDefaultGitRepo = %v, want %v", gotDefaultGitRepo, tt.wantDefaultGitRepo)
+			}
+		})
+	}
+}
+
+func Test_getShortHash(t *testing.T) {
+	type args struct {
+		hash    string
+		ndigits int
+	}
+	tests := []struct {
+		name      string
+		args      args
+		wantShort string
+	}{
+		{"small", args{"a", 10}, "a"},
+		{"7dig", args{"1e872b59013425b7c404a91d16119e8452b983f2", 7}, "1e872b5"},
+		{"4dig", args{"1e872b59013425b7c404a91d16119e8452b983f2", 4}, "1e87"},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if gotShort := getShortHash(tt.args.hash, tt.args.ndigits); gotShort != tt.wantShort {
+				t.Errorf("getShortHash() = %v, want %v", gotShort, tt.wantShort)
+			}
+		})
+	}
+}