Updated main to add the env var and send a post request

cmd/git-sync/main.go

@@ -33,6 +33,7 @@ import (
 	"strconv"
 	"strings"
 	"time"
+	"http"
 
 	"github.com/thockin/glogr"
 	"github.com/thockin/logr"
@@ -61,6 +62,8 @@ var flMaxSyncFailures = flag.Int("max-sync-failures", envInt("GIT_SYNC_MAX_SYNC_
 	"the number of consecutive failures allowed before aborting (the first pull must succeed, -1 disables aborting for any number of failures after the initial sync)")
 var flChmod = flag.Int("change-permissions", envInt("GIT_SYNC_PERMISSIONS", 0),
 	"the file permissions to apply to the checked-out files")
+var flSymlinkUpdatePostUrl = flag.String("symlink-update-post-url", envString("GIT_SYNC_SYMLINK_UPDATE_POST_URL", ""),
+	"a command to run when the symlink is updated")
 
 var flUsername = flag.String("username", envString("GIT_SYNC_USERNAME", ""),
 	"the username to use")
@@ -290,6 +293,15 @@ func updateSymlink(ctx context.Context, gitRoot, link, newDir string) error {
 		log.V(1).Infof("pruned old worktrees")
 	}
 	
+	// If there is a symlink update callback, call it
+	if len(*flSymlinkUpdateCallback) > 0 {
+		// Send the post request
+		resp, err := http.NewRequest("POST", url, nil)
+		if err != nil {
+			return fmt.Errorf("error sending symlink update callback post request: %v", err)
+		}
+	}
+
 	return nil
 }