GeorgeJahad commented on a change in pull request #2703:
URL: https://github.com/apache/ozone/pull/2703#discussion_r720868956



##########
File path: 
hadoop-ozone/integration-test/src/test/java/org/apache/hadoop/ozone/om/TestOmMetrics.java
##########
@@ -111,63 +123,54 @@ public void testVolumeOps() throws Exception {
             ozoneManager, "volumeManager");
     VolumeManager mockVm = Mockito.spy(volumeManager);
 
-    Mockito.doNothing().when(mockVm).createVolume(null);
-    Mockito.doNothing().when(mockVm).deleteVolume(null);
-    Mockito.doReturn(null).when(mockVm).getVolumeInfo(null);
-    Mockito.doReturn(true).when(mockVm).checkVolumeAccess(null, null);
-    Mockito.doNothing().when(mockVm).setOwner(null, null);
-    Mockito.doReturn(null).when(mockVm).listVolumes(null, null, null, 0);
-
-    HddsWhiteboxTestUtils.setInternalState(
-        ozoneManager, "volumeManager", mockVm);
-    doVolumeOps();
-
+    OmVolumeArgs volumeArgs = createVolumeArgs();
+    doVolumeOps(volumeArgs);
     MetricsRecordBuilder omMetrics = getMetrics("OMMetrics");
-    assertCounter("NumVolumeOps", 6L, omMetrics);
+    assertCounter("NumVolumeOps", 5L, omMetrics);
     assertCounter("NumVolumeCreates", 1L, omMetrics);

Review comment:
       decreased by 1 because of removal of checkVolumeAccess() op

##########
File path: 
hadoop-ozone/integration-test/src/test/java/org/apache/hadoop/ozone/om/TestOmMetrics.java
##########
@@ -111,63 +123,54 @@ public void testVolumeOps() throws Exception {
             ozoneManager, "volumeManager");
     VolumeManager mockVm = Mockito.spy(volumeManager);
 
-    Mockito.doNothing().when(mockVm).createVolume(null);
-    Mockito.doNothing().when(mockVm).deleteVolume(null);
-    Mockito.doReturn(null).when(mockVm).getVolumeInfo(null);
-    Mockito.doReturn(true).when(mockVm).checkVolumeAccess(null, null);
-    Mockito.doNothing().when(mockVm).setOwner(null, null);
-    Mockito.doReturn(null).when(mockVm).listVolumes(null, null, null, 0);
-
-    HddsWhiteboxTestUtils.setInternalState(
-        ozoneManager, "volumeManager", mockVm);
-    doVolumeOps();
-
+    OmVolumeArgs volumeArgs = createVolumeArgs();
+    doVolumeOps(volumeArgs);
     MetricsRecordBuilder omMetrics = getMetrics("OMMetrics");
-    assertCounter("NumVolumeOps", 6L, omMetrics);
+    assertCounter("NumVolumeOps", 5L, omMetrics);
     assertCounter("NumVolumeCreates", 1L, omMetrics);
     assertCounter("NumVolumeUpdates", 1L, omMetrics);
     assertCounter("NumVolumeInfos", 1L, omMetrics);
-    assertCounter("NumVolumeCheckAccesses", 1L, omMetrics);
     assertCounter("NumVolumeDeletes", 1L, omMetrics);
     assertCounter("NumVolumeLists", 1L, omMetrics);
     assertCounter("NumVolumes", 1L, omMetrics);
 
-    ozoneManager.createVolume(null);
-    ozoneManager.createVolume(null);
-    ozoneManager.createVolume(null);
-    ozoneManager.deleteVolume(null);
+    volumeArgs = createVolumeArgs();
+    writeClient.createVolume(volumeArgs);
+    volumeArgs = createVolumeArgs();
+    writeClient.createVolume(volumeArgs);
+    volumeArgs = createVolumeArgs();
+    writeClient.createVolume(volumeArgs);
+    writeClient.deleteVolume(volumeArgs.getVolume());
 
     omMetrics = getMetrics("OMMetrics");
 
     // Accounting 's3v' volume which is created by default.
     assertCounter("NumVolumes", 3L, omMetrics);
 
 
-    // inject exception to test for Failure Metrics
-    Mockito.doThrow(exception).when(mockVm).createVolume(null);
-    Mockito.doThrow(exception).when(mockVm).deleteVolume(null);
-    Mockito.doThrow(exception).when(mockVm).getVolumeInfo(null);
-    Mockito.doThrow(exception).when(mockVm).checkVolumeAccess(null, null);
-    Mockito.doThrow(exception).when(mockVm).setOwner(null, null);
-    Mockito.doThrow(exception).when(mockVm).listVolumes(null, null, null, 0);
+    // inject exception to test for Failure Metrics on the read path
+    Mockito.doThrow(exception).when(mockVm).getVolumeInfo(any());
+    Mockito.doThrow(exception).when(mockVm).listVolumes(any(), any(),
+        any(), anyInt());
 
     HddsWhiteboxTestUtils.setInternalState(ozoneManager,
         "volumeManager", mockVm);
-    doVolumeOps();
+    // inject exception to test for Failure Metrics on the write path
+    mockWritePathExceptions(OmVolumeArgs.class);
+    volumeArgs = createVolumeArgs();
+    doVolumeOps(volumeArgs);
 
     omMetrics = getMetrics("OMMetrics");
-    assertCounter("NumVolumeOps", 16L, omMetrics);
+    assertCounter("NumVolumeOps", 14L, omMetrics);

Review comment:
       decreased by 1 because of removal of checkVolumeAccess() op




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