Replace sticky tasklist metrics scope with the same value (#601)

* Replace sticky tasklist metrics scope with the same value

Author: yux0

src/main/java/com/uber/cadence/worker/WorkerFactory.java

@@ -76,6 +76,7 @@ public static WorkerFactory newInstance(
       "attempted to %s while in %s state. Acceptable States: %s";
   private static final Logger log = LoggerFactory.getLogger(WorkerFactory.class);
   private static final String STICKY_TASK_LIST_PREFIX = "sticky";
+  private static final String STICKY_TASK_LIST_METRIC_TAG = "__" + STICKY_TASK_LIST_PREFIX + "__";
   private static final String POLL_THREAD_NAME = "Sticky Task Poller";
 
   /**
@@ -113,7 +114,7 @@ public WorkerFactory(WorkflowClient workflowClient, WorkerFactoryOptions factory
                     MetricsTag.DOMAIN,
                     workflowClient.getOptions().getDomain(),
                     MetricsTag.TASK_LIST,
-                    getStickyTaskListName()));
+                    STICKY_TASK_LIST_METRIC_TAG));
 
     this.cache = new DeciderCache(this.factoryOptions.getCacheMaximumSize(), stickyScope);
     dispatcher = new PollDecisionTaskDispatcher(workflowClient.getService());

src/test/java/com/uber/cadence/worker/StickyWorkerTest.java

@@ -74,6 +74,7 @@ public class StickyWorkerTest {
 
   private static final boolean useDockerService =
       Boolean.parseBoolean(System.getenv("USE_DOCKER_SERVICE"));
+  private static final String STICKY_TASK_LIST_METRIC_TAG = "__sticky__";
 
   @Parameterized.Parameter public boolean useExternalService;
 
@@ -151,7 +152,7 @@ public void whenStickyIsEnabledThenTheWorkflowIsCachedSignals() throws Exception
     Map<String, String> tags =
         new ImmutableMap.Builder<String, String>(2)
             .put(MetricsTag.DOMAIN, DOMAIN)
-            .put(MetricsTag.TASK_LIST, factory.getStickyTaskListName())
+            .put(MetricsTag.TASK_LIST, STICKY_TASK_LIST_METRIC_TAG)
             .build();
     Thread.sleep(600);
     verify(reporter, atLeastOnce())
@@ -265,7 +266,7 @@ public void whenStickyIsEnabledThenTheWorkflowIsCachedActivities() throws Except
     Map<String, String> tags =
         new ImmutableMap.Builder<String, String>(2)
             .put(MetricsTag.DOMAIN, DOMAIN)
-            .put(MetricsTag.TASK_LIST, factory.getStickyTaskListName())
+            .put(MetricsTag.TASK_LIST, STICKY_TASK_LIST_METRIC_TAG)
             .build();
     verify(reporter, atLeastOnce())
         .reportCounter(eq(MetricsType.STICKY_CACHE_HIT), eq(tags), anyInt());
@@ -314,7 +315,7 @@ public void whenStickyIsEnabledThenTheWorkflowIsCachedChildWorkflows() throws Ex
     Map<String, String> tags =
         new ImmutableMap.Builder<String, String>(2)
             .put(MetricsTag.DOMAIN, DOMAIN)
-            .put(MetricsTag.TASK_LIST, factory.getStickyTaskListName())
+            .put(MetricsTag.TASK_LIST, STICKY_TASK_LIST_METRIC_TAG)
             .build();
     verify(reporter, atLeastOnce())
         .reportCounter(eq(MetricsType.STICKY_CACHE_HIT), eq(tags), anyInt());
@@ -370,7 +371,7 @@ public void whenStickyIsEnabledThenTheWorkflowIsCachedMutableSideEffect() throws
     Map<String, String> tags =
         new ImmutableMap.Builder<String, String>(2)
             .put(MetricsTag.DOMAIN, DOMAIN)
-            .put(MetricsTag.TASK_LIST, factory.getStickyTaskListName())
+            .put(MetricsTag.TASK_LIST, STICKY_TASK_LIST_METRIC_TAG)
             .build();
     verify(reporter, atLeastOnce())
         .reportCounter(eq(MetricsType.STICKY_CACHE_HIT), eq(tags), anyInt());