first commit

cmd/chkmqhealthy/main.go

@@ -0,0 +1,77 @@
+/*
+© Copyright IBM Corporation 2017, 2024
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// chkmqhealthy checks that MQ is healthy, by checking the output of the "dspmq" command
+package main
+
+import (
+	"context"
+	"fmt"
+	"os"
+	"os/exec"
+	"os/signal"
+	"strings"
+
+	"github.com/ibm-messaging/mq-container/pkg/name"
+)
+
+func queueManagerHealthy(ctx context.Context) (bool, error) {
+	name, err := name.GetQueueManagerName()
+	if err != nil {
+		return false, err
+	}
+	// Specify the queue manager name, just in case someone's created a second queue manager
+	// #nosec G204
+	cmd := exec.CommandContext(ctx, "dspmq", "-n", "-m", name)
+	// Run the command and wait for completion
+	out, err := cmd.CombinedOutput()
+	fmt.Printf("%s", out)
+	if err != nil {
+		fmt.Println(err)
+		return false, err
+	}
+	readyStrings := []string{
+		"(RUNNING)",
+		"(RUNNING AS STANDBY)",
+		"(RECOVERY GROUP LEADER)",
+		"(STARTING)",
+		"(REPLICA)",
+	}
+	for _, checkString := range readyStrings {
+		if strings.Contains(string(out), checkString) {
+			return true, nil
+		}
+	}
+	return false, nil
+}
+
+func doMain() int {
+	ctx, cancel := signal.NotifyContext(context.Background(), os.Interrupt, os.Kill)
+	defer cancel()
+
+	healthy, err := queueManagerHealthy(ctx)
+	if err != nil {
+		return 2
+	}
+	if !healthy {
+		return 1
+	}
+	return 0
+}
+
+func main() {
+	os.Exit(doMain())
+}