From 7897da4be4ca6d6be9831fc5734707f156fa46cf Mon Sep 17 00:00:00 2001
From: yipeng1030 <58055769+yipeng1030@users.noreply.github.com>
Date: Wed, 8 Jan 2025 11:27:38 +0800
Subject: [PATCH] fix: fix explain-config cmd  (#532)

---
 pkg/cmd/cluster/config_observer.go | 5 +++++
 pkg/cmd/cluster/errors.go          | 1 +
 2 files changed, 6 insertions(+)

diff --git a/pkg/cmd/cluster/config_observer.go b/pkg/cmd/cluster/config_observer.go
index 4a3c71502..145214152 100644
--- a/pkg/cmd/cluster/config_observer.go
+++ b/pkg/cmd/cluster/config_observer.go
@@ -168,6 +168,11 @@ func (r *configObserverOptions) printExplainConfigure(configSpecs configSpecsTyp
 		return nil
 	}
 
+	if tpl.ConfigConstraint == nil {
+		fmt.Printf("\n%s\n", fmt.Sprintf(noConfigConstraintPrompt, printer.BoldYellow(tplName)))
+		return nil
+	}
+
 	confSpec := tpl.ConfigConstraint.Spec
 	if confSpec.ParametersSchema == nil {
 		fmt.Printf("\n%s\n", fmt.Sprintf(notConfigSchemaPrompt, printer.BoldYellow(tplName)))
diff --git a/pkg/cmd/cluster/errors.go b/pkg/cmd/cluster/errors.go
index 4459d652b..2688b4949 100644
--- a/pkg/cmd/cluster/errors.go
+++ b/pkg/cmd/cluster/errors.go
@@ -41,6 +41,7 @@ var (
 	notFoundConfigFileErrorMessage   = "cannot find config file[name=%s] in the configspec[name=%s], all configfiles: %v"
 	notSupportFileUpdateErrorMessage = "not supported file[%s] for updating, current supported files: %v"
 
+	noConfigConstraintPrompt      = "cannot find configConstraint for template[%s]"
 	notConfigSchemaPrompt         = "The config template[%s] is not defined in schema and parameter explanation info cannot be generated."
 	cue2openAPISchemaFailedPrompt = "The cue schema may not satisfy the conversion constraints of openAPISchema and parameter explanation info cannot be generated."
 	restartConfirmPrompt          = "The parameter change incurs a cluster restart, which brings the cluster down for a while. Enter to continue...\n, "