Add gauge metric for NCMP "cmhandle states"

Issue-ID: CPS-2456
Change-Id: I1aebcc68dfdc9c48c230c74376742d67b05c0615
Signed-off-by: emaclee <lee.anjella.macabuhay@est.tech>

1 files changed, 86 insertions, 3 deletions

diff --git a/cps-application/src/main/java/org/onap/cps/config/MicroMeterConfig.java b/cps-application/src/main/java/org/onap/cps/config/MicroMeterConfig.java
index 22194f3ad8..39ed6ef5a7 100644
--- a/cps-application/src/main/java/org/onap/cps/config/MicroMeterConfig.java
+++ b/cps-application/src/main/java/org/onap/cps/config/MicroMeterConfig.java
@@ -1,6 +1,6 @@
 /*
  * ============LICENSE_START=======================================================
- * Copyright (C) 2023 Nordix Foundation.
+ * Copyright (C) 2023-2025 Nordix Foundation.
  * ================================================================================
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -20,17 +20,100 @@
 
 package org.onap.cps.config;
 
+import com.hazelcast.map.IMap;
 import io.micrometer.core.aop.TimedAspect;
+import io.micrometer.core.instrument.Gauge;
 import io.micrometer.core.instrument.MeterRegistry;
+import lombok.RequiredArgsConstructor;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 
 @Configuration
+@RequiredArgsConstructor
 public class MicroMeterConfig {
 
+    private static final String TAG = "state";
+    private static final String CMHANDLE_STATE_GAUGE = "cmHandlesByState";
+    final IMap<String, Integer> cmHandlesByState;
+
+    @Bean
+    public TimedAspect timedAspect(final MeterRegistry meterRegistry) {
+        return new TimedAspect(meterRegistry);
+    }
+
+    /**
+     * Register gauge metric for cm handles with state 'advised'.
+     *
+     * @param meterRegistry meter registry
+     * @return cm handle state gauge
+     */
+    @Bean
+    public Gauge advisedCmHandles(final MeterRegistry meterRegistry) {
+        return Gauge.builder(CMHANDLE_STATE_GAUGE, cmHandlesByState,
+                        value -> cmHandlesByState.get("advisedCmHandlesCount"))
+                .tag(TAG, "ADVISED")
+                .description("Current number of cmhandles in advised state")
+                .register(meterRegistry);
+    }
+
+    /**
+     * Register gauge metric for cm handles with state 'ready'.
+     *
+     * @param meterRegistry meter registry
+     * @return cm handle state gauge
+     */
+    @Bean
+    public Gauge readyCmHandles(final MeterRegistry meterRegistry) {
+        return Gauge.builder(CMHANDLE_STATE_GAUGE, cmHandlesByState,
+                        value -> cmHandlesByState.get("readyCmHandlesCount"))
+                .tag(TAG, "READY")
+                .description("Current number of cmhandles in ready state")
+                .register(meterRegistry);
+    }
+
+    /**
+     * Register gauge metric for cm handles with state 'locked'.
+     *
+     * @param meterRegistry meter registry
+     * @return cm handle state gauge
+     */
+    @Bean
+    public Gauge lockedCmHandles(final MeterRegistry meterRegistry) {
+        return Gauge.builder(CMHANDLE_STATE_GAUGE, cmHandlesByState,
+                value -> cmHandlesByState.get("lockedCmHandlesCount"))
+                .tag(TAG, "LOCKED")
+                .description("Current number of cmhandles in locked state")
+                .register(meterRegistry);
+    }
+
+    /**
+     * Register gauge metric for cm handles with state 'deleting'.
+     *
+     * @param meterRegistry meter registry
+     * @return cm handle state gauge
+     */
+    @Bean
+    public Gauge deletingCmHandles(final MeterRegistry meterRegistry) {
+        return Gauge.builder(CMHANDLE_STATE_GAUGE, cmHandlesByState,
+                        value -> cmHandlesByState.get("deletingCmHandlesCount"))
+                .tag(TAG, "DELETING")
+                .description("Current number of cmhandles in deleting state")
+                .register(meterRegistry);
+    }
+
+    /**
+     * Register gauge metric for cm handles with state 'deleted'.
+     *
+     * @param meterRegistry meter registry
+     * @return cm handle state gauge
+     */
     @Bean
-    public TimedAspect timedAspect(final MeterRegistry registry) {
-        return new TimedAspect(registry);
+    public Gauge deletedCmHandles(final MeterRegistry meterRegistry) {
+        return Gauge.builder(CMHANDLE_STATE_GAUGE, cmHandlesByState,
+                        value -> cmHandlesByState.get("deletedCmHandlesCount"))
+                .tag(TAG, "DELETED")
+                .description("Current number of cmhandles in deleted state")
+                .register(meterRegistry);
     }
 
 }