Ccd 5483 enable caffeine cache stats (#2478)

* To get Caffeine specific stats, changes addedx to monitor thosecaches

* To get Caffeine specific stats

* registering custom cache

* registering custom cache recordstats

* added /metrics to app insights

* added /metrics to app insights

* empty commit to trigger build

* empty commit to trigger build

* empty commit to trigger build

* empty commit to trigger build

* empty commit to trigger build

* empty commit to trigger build

---------

Co-authored-by: RebeccaBaker <[email protected]>
Co-authored-by: ankita-srivastava009 <[email protected]>

Author: 3 people

build.gradle

@@ -226,7 +226,7 @@ dependencies {
     implementation('org.springframework.boot:spring-boot-starter-web')
     implementation('org.springframework.retry:spring-retry')
     implementation('org.springframework.boot:spring-boot-starter-cache')
-    implementation 'com.github.ben-manes.caffeine:caffeine:3.1.6'
+    implementation 'com.github.ben-manes.caffeine:caffeine:3.1.8'
 
     implementation group: 'javax.inject', name: 'javax.inject', version: '1'
     implementation group: 'org.apache.commons', name: 'commons-lang3', version: '3.7'
@@ -370,7 +370,7 @@ dependencies {
     contractTestImplementation 'com.github.hmcts:ccd-case-document-am-client:1.7.1'
     contractTestAnnotationProcessor group: 'org.projectlombok', name: 'lombok', version: '1.18.34'
     contractTestImplementation 'org.springframework.boot:spring-boot-starter-cache'
-    contractTestImplementation 'com.github.ben-manes.caffeine:caffeine:3.1.6'
+    contractTestImplementation 'com.github.ben-manes.caffeine:caffeine:3.1.8'
     aatImplementation group: 'commons-lang', name: 'commons-lang', version: '2.6'
     aatImplementation group: 'io.rest-assured', name: 'rest-assured', version: '4.3.0'
     aatImplementation group: 'org.projectlombok', name: 'lombok', version: '1.18.34'

lib/applicationinsights.json

@@ -13,6 +13,11 @@
               "key": "http.url",
               "value": "https?://[^/]+/health.*",
               "matchType": "regexp"
+            },
+            {
+              "key": "http.url",
+              "value": "https?://[^/]+/metrics.*",
+              "matchType": "regexp"
             }
           ],
           "percentage": 1

src/main/java/uk/gov/hmcts/ccd/config/CacheConfiguration.java

@@ -3,8 +3,10 @@
 import com.github.benmanes.caffeine.cache.Caffeine;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.cache.CacheManager;
+import org.springframework.cache.annotation.CachingConfigurerSupport;
 import org.springframework.cache.annotation.EnableCaching;
 import org.springframework.cache.caffeine.CaffeineCache;
+import org.springframework.cache.caffeine.CaffeineCacheManager;
 import org.springframework.cache.support.SimpleCacheManager;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
@@ -21,11 +23,14 @@
 @EnableCaching
 @EnableScheduling
 @Slf4j
-public class CacheConfiguration {
+public class CacheConfiguration extends CachingConfigurerSupport {
 
     private static final int TTL_ZERO = 0;
     private final ApplicationParams applicationParams;
 
+    // create a Caffeine Cache manager
+    private final CaffeineCacheManager caffeineCacheManager = new CaffeineCacheManager();
+
     public CacheConfiguration(ApplicationParams applicationParams) {
         this.applicationParams = applicationParams;
     }
@@ -77,7 +82,9 @@ public CacheManager cacheManager() {
             newMapConfigWithTtl(SERVICES_CACHE, applicationParams.getRefDataCacheTtlInSec())
         ));
 
-        return cacheManager;
+        caffeineCacheManager.setCaffeine(Caffeine.newBuilder().recordStats());
+        caffeineCacheManager.setCacheNames(cacheManager.getCacheNames());
+        return caffeineCacheManager;
     }
 
     private CaffeineCache newMapConfigWithMaxIdle(final String cacheName, final Integer maxIdle) {
@@ -99,6 +106,12 @@ private CaffeineCache buildCache(String cacheName, int ttl, int maxIdle) {
         }
 
         cacheBuilder.maximumSize(applicationParams.getDefaultCacheMaxSize());
-        return new CaffeineCache(cacheName, cacheBuilder.build());
+        log.debug("creating custom cache: name='{}'", cacheName);
+        CaffeineCache caffeineCache = new CaffeineCache(cacheName, cacheBuilder.recordStats().build());
+        caffeineCacheManager.registerCustomCache(cacheName, cacheBuilder.build());
+        log.debug("registering custom cache: name='{}'", cacheName);
+
+        return caffeineCache;
+
     }
 }