fix #2206 add http handler to display version string (#2207)

Signed-off-by: nitram509 <[email protected]>

cmd/guacgql/cmd/server.go

@@ -19,6 +19,7 @@ import (
  "context"
  "errors"
  "fmt"
+ "github.com/guacsec/guac/pkg/version"
  "net/http"
  "os"
  "os/signal"
@@ -101,6 +102,7 @@ func startServer(cmd *cobra.Command) {
  }
 
  http.HandleFunc("/healthz", healthHandler)
+ http.HandleFunc("/version", versionHandler)
 
  http.Handle("/query", srvHandler)
  proto := "http"
@@ -191,6 +193,12 @@ func healthHandler(w http.ResponseWriter, r *http.Request) {
  _, _ = fmt.Fprint(w, "Server is healthy")
 }
 
+func versionHandler(w http.ResponseWriter, r *http.Request) {
+ w.Header().Add("Content-Type", "text/plain")
+ w.WriteHeader(http.StatusOK)
+ _, _ = fmt.Fprint(w, version.Version)
+}
+
 func getArango(_ context.Context) backends.BackendArgs {
  return &arangodb.ArangoConfig{
  User: flags.arangoUser,

cmd/guacgql/cmd/server_test.go

@@ -0,0 +1,27 @@
+package cmd
+
+import (
+ "github.com/guacsec/guac/pkg/version"
+ "github.com/stretchr/testify/assert"
+ "io"
+ "net/http"
+ "net/http/httptest"
+ "testing"
+)
+
+func Test_versionHandler(t *testing.T) {
+ ts := httptest.NewServer(http.HandlerFunc(versionHandler))
+ defer ts.Close()
+
+ res, err := http.Get(ts.URL)
+ assert.NoError(t, err)
+
+ actualData, err := io.ReadAll(res.Body)
+ assert.NoError(t, err)
+
+ err = res.Body.Close()
+ assert.NoError(t, err)
+
+ actualStr := string(actualData)
+ assert.Equal(t, version.Version, actualStr)
+}