chore: add get release tag commit sha

utils/utils.go

@@ -240,6 +240,39 @@ func GetLatestReleaseTagsSorted(org string, repo string) ([]string, error) {
 	return versions, nil
 }
 
+// Gets release tag from github for a given org name, repo name(in that org) and tag 
+func GetLatestReleaseTagCommitSHA(org string, repo string) (string, error) {
+    url := fmt.Sprintf("https://github.com/%s/%s/tags", org, repo)
+
+    resp, err := http.Get(url)
+    if err != nil {
+        return "", errors.New("cannot get list of tags from Github")
+    }
+    defer safeClose(resp.Body)
+
+	if (resp.StatusCode == 404) {
+		return "", errors.New("repository is not found")
+	}
+
+	body, err := io.ReadAll(resp.Body)
+	if err != nil {
+		return "", err
+	}
+	re := regexp.MustCompile("/commit/(.*?)\"")
+	releases := re.FindAllString(string(body), -1)
+	if len(releases) == 0 {
+		return "", errors.New("no commit found in this repository")
+	}
+	var commits []string
+	for _, rel := range releases {
+		latest := strings.ReplaceAll(rel, "/commit/", "")
+		latest = strings.ReplaceAll(latest, "\"", "")
+		commits = append(commits, latest)
+	}
+
+	return commits[0], nil
+}
+
 // SafeClose is a helper function help to close the io
 func safeClose(co io.Closer) {
 	if cerr := co.Close(); cerr != nil {

utils/utils_test.go

@@ -78,3 +78,49 @@ func TestTransformMapKeys(t *testing.T) {
 		})
 	}
 }
+
+func TestGetLatestReleaseTagCommitSHAInvalid(t *testing.T) {
+	cases := []struct{
+        description string
+        org string
+        repo string
+        expectedErr string
+    }{
+		{
+            description: "Test cases negative not existed repository",
+            org:  "layer5labs",
+            repo: "meshery-extensions-package",
+            expectedErr: "repository is not found",
+        },
+		{
+            description: "Test cases negative not existed repository",
+            org:  "layer5io",
+            repo: "docs",
+            expectedErr: "no commit found in this repository",
+        },
+    }
+    for _, tt := range cases {
+        t.Run(tt.description, func(t *testing.T){
+            commitSHA, err := GetLatestReleaseTagCommitSHA(tt.org, tt.repo)
+			if err.Error() != tt.expectedErr {
+				t.Errorf("expected error %s, but got error %s", err, err.Error())
+			}
+
+			if commitSHA != "" {
+				t.Errorf("expected commitSHA string empty, but got %s", commitSHA)
+			}
+        })
+    }
+}
+
+func TestGetLatestReleaseTagCommitSHA(t *testing.T)  {
+	commitSHA, err := GetLatestReleaseTagCommitSHA("kelseyhightower", "nocode")
+	if err != nil {
+		t.Errorf("expected no error, but got error %s", err)
+	}
+
+	expectedSHA := "ed6c73fc16578ec53ea374585df2b965ce9f4a31"
+	if commitSHA != "ed6c73fc16578ec53ea374585df2b965ce9f4a31" {
+		t.Errorf("expected commitSHA %s, but got %s", commitSHA, expectedSHA)
+	}
+}