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From aengin...@apache.org
Subject hadoop git commit: HDFS-12086. Ozone: Add the unit test for KSMMetrics. Contributed by Yiqun Lin.
Date Wed, 05 Jul 2017 22:55:58 GMT
Repository: hadoop
Updated Branches:
  refs/heads/HDFS-7240 62c0cc767 -> 2959102b1


HDFS-12086. Ozone: Add the unit test for KSMMetrics. Contributed by Yiqun Lin.


Project: http://git-wip-us.apache.org/repos/asf/hadoop/repo
Commit: http://git-wip-us.apache.org/repos/asf/hadoop/commit/2959102b
Tree: http://git-wip-us.apache.org/repos/asf/hadoop/tree/2959102b
Diff: http://git-wip-us.apache.org/repos/asf/hadoop/diff/2959102b

Branch: refs/heads/HDFS-7240
Commit: 2959102b1fbe6ee97a1661885eab660289856e57
Parents: 62c0cc7
Author: Anu Engineer <aengineer@apache.org>
Authored: Wed Jul 5 15:23:11 2017 -0700
Committer: Anu Engineer <aengineer@apache.org>
Committed: Wed Jul 5 15:23:11 2017 -0700

----------------------------------------------------------------------
 .../org/apache/hadoop/ozone/ksm/KSMMetrics.java |  65 ++--
 .../hadoop/ozone/ksm/KeySpaceManager.java       |  12 +-
 .../apache/hadoop/ozone/ksm/TestKSMMetrcis.java | 306 +++++++++++++++++++
 3 files changed, 357 insertions(+), 26 deletions(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/hadoop/blob/2959102b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/ozone/ksm/KSMMetrics.java
----------------------------------------------------------------------
diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/ozone/ksm/KSMMetrics.java
b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/ozone/ksm/KSMMetrics.java
index 1023a17..35a4c43 100644
--- a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/ozone/ksm/KSMMetrics.java
+++ b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/ozone/ksm/KSMMetrics.java
@@ -18,24 +18,34 @@
 package org.apache.hadoop.ozone.ksm;
 
 import com.google.common.annotations.VisibleForTesting;
+
+import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.metrics2.MetricsSystem;
 import org.apache.hadoop.metrics2.annotation.Metric;
+import org.apache.hadoop.metrics2.annotation.Metrics;
 import org.apache.hadoop.metrics2.lib.DefaultMetricsSystem;
 import org.apache.hadoop.metrics2.lib.MutableCounterLong;
 
 /**
  * This class is for maintaining KeySpaceManager statistics.
  */
+@InterfaceAudience.Private
+@Metrics(about="Key Space Manager Metrics", context="dfs")
 public class KSMMetrics {
+  // KSM request type op metrics
+  private @Metric MutableCounterLong numVolumeOps;
+  private @Metric MutableCounterLong numBucketOps;
+  private @Metric MutableCounterLong numKeyOps;
+
   // KSM op metrics
   private @Metric MutableCounterLong numVolumeCreates;
-  private @Metric MutableCounterLong numVolumeModifies;
+  private @Metric MutableCounterLong numVolumeUpdates;
   private @Metric MutableCounterLong numVolumeInfos;
   private @Metric MutableCounterLong numVolumeCheckAccesses;
   private @Metric MutableCounterLong numBucketCreates;
   private @Metric MutableCounterLong numVolumeDeletes;
   private @Metric MutableCounterLong numBucketInfos;
-  private @Metric MutableCounterLong numBucketModifies;
+  private @Metric MutableCounterLong numBucketUpdates;
   private @Metric MutableCounterLong numBucketDeletes;
   private @Metric MutableCounterLong numKeyAllocate;
   private @Metric MutableCounterLong numKeyLookup;
@@ -46,13 +56,13 @@ public class KSMMetrics {
 
   // Failure Metrics
   private @Metric MutableCounterLong numVolumeCreateFails;
-  private @Metric MutableCounterLong numVolumeModifyFails;
+  private @Metric MutableCounterLong numVolumeUpdateFails;
   private @Metric MutableCounterLong numVolumeInfoFails;
   private @Metric MutableCounterLong numVolumeDeleteFails;
   private @Metric MutableCounterLong numBucketCreateFails;
   private @Metric MutableCounterLong numVolumeCheckAccessFails;
   private @Metric MutableCounterLong numBucketInfoFails;
-  private @Metric MutableCounterLong numBucketModifyFails;
+  private @Metric MutableCounterLong numBucketUpdateFails;
   private @Metric MutableCounterLong numBucketDeleteFails;
   private @Metric MutableCounterLong numKeyAllocateFails;
   private @Metric MutableCounterLong numKeyLookupFails;
@@ -72,50 +82,62 @@ public class KSMMetrics {
   }
 
   public void incNumVolumeCreates() {
+    numVolumeOps.incr();
     numVolumeCreates.incr();
   }
 
-  public void incNumVolumeModifies() {
-    numVolumeModifies.incr();
+  public void incNumVolumeUpdates() {
+    numVolumeOps.incr();
+    numVolumeUpdates.incr();
   }
 
   public void incNumVolumeInfos() {
+    numVolumeOps.incr();
     numVolumeInfos.incr();
   }
 
   public void incNumVolumeDeletes() {
+    numVolumeOps.incr();
     numVolumeDeletes.incr();
   }
 
   public void incNumVolumeCheckAccesses() {
+    numVolumeOps.incr();
     numVolumeCheckAccesses.incr();
   }
 
   public void incNumBucketCreates() {
+    numBucketOps.incr();
     numBucketCreates.incr();
   }
 
   public void incNumBucketInfos() {
+    numBucketOps.incr();
     numBucketInfos.incr();
   }
 
-  public void incNumBucketModifies() {
-    numBucketModifies.incr();
+  public void incNumBucketUpdates() {
+    numBucketOps.incr();
+    numBucketUpdates.incr();
   }
 
   public void incNumBucketDeletes() {
+    numBucketOps.incr();
     numBucketDeletes.incr();
   }
 
   public void incNumBucketLists() {
+    numBucketOps.incr();
     numBucketLists.incr();
   }
 
   public void incNumKeyLists() {
+    numKeyOps.incr();
     numKeyLists.incr();
   }
 
   public void incNumVolumeLists() {
+    numVolumeOps.incr();
     numVolumeLists.incr();
   }
 
@@ -123,8 +145,8 @@ public class KSMMetrics {
     numVolumeCreateFails.incr();
   }
 
-  public void incNumVolumeModifyFails() {
-    numVolumeModifyFails.incr();
+  public void incNumVolumeUpdateFails() {
+    numVolumeUpdateFails.incr();
   }
 
   public void incNumVolumeInfoFails() {
@@ -147,8 +169,8 @@ public class KSMMetrics {
     numBucketInfoFails.incr();
   }
 
-  public void incNumBucketModifyFails() {
-    numBucketModifyFails.incr();
+  public void incNumBucketUpdateFails() {
+    numBucketUpdateFails.incr();
   }
 
   public void incNumBucketDeleteFails() {
@@ -156,6 +178,7 @@ public class KSMMetrics {
   }
 
   public void incNumKeyAllocates() {
+    numKeyOps.incr();
     numKeyAllocate.incr();
   }
 
@@ -164,6 +187,7 @@ public class KSMMetrics {
   }
 
   public void incNumKeyLookups() {
+    numKeyOps.incr();
     numKeyLookup.incr();
   }
 
@@ -176,6 +200,7 @@ public class KSMMetrics {
   }
 
   public void incNumKeyDeletes() {
+    numKeyOps.incr();
     numKeyDeletes.incr();
   }
 
@@ -197,8 +222,8 @@ public class KSMMetrics {
   }
 
   @VisibleForTesting
-  public long getNumVolumeModifies() {
-    return numVolumeModifies.value();
+  public long getNumVolumeUpdates() {
+    return numVolumeUpdates.value();
   }
 
   @VisibleForTesting
@@ -227,8 +252,8 @@ public class KSMMetrics {
   }
 
   @VisibleForTesting
-  public long getNumBucketModifies() {
-    return numBucketModifies.value();
+  public long getNumBucketUpdates() {
+    return numBucketUpdates.value();
   }
 
   @VisibleForTesting
@@ -257,8 +282,8 @@ public class KSMMetrics {
   }
 
   @VisibleForTesting
-  public long getNumVolumeModifyFails() {
-    return numVolumeModifyFails.value();
+  public long getNumVolumeUpdateFails() {
+    return numVolumeUpdateFails.value();
   }
 
   @VisibleForTesting
@@ -287,8 +312,8 @@ public class KSMMetrics {
   }
 
   @VisibleForTesting
-  public long getNumBucketModifyFails() {
-    return numBucketModifyFails.value();
+  public long getNumBucketUpdateFails() {
+    return numBucketUpdateFails.value();
   }
 
   @VisibleForTesting

http://git-wip-us.apache.org/repos/asf/hadoop/blob/2959102b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/ozone/ksm/KeySpaceManager.java
----------------------------------------------------------------------
diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/ozone/ksm/KeySpaceManager.java
b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/ozone/ksm/KeySpaceManager.java
index 591d8bf..7cf349c 100644
--- a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/ozone/ksm/KeySpaceManager.java
+++ b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/ozone/ksm/KeySpaceManager.java
@@ -255,10 +255,10 @@ public class KeySpaceManager implements KeySpaceManagerProtocol {
   @Override
   public void setOwner(String volume, String owner) throws IOException {
     try {
-      metrics.incNumVolumeModifies();
+      metrics.incNumVolumeUpdates();
       volumeManager.setOwner(volume, owner);
     } catch (Exception ex) {
-      metrics.incNumVolumeModifyFails();
+      metrics.incNumVolumeUpdateFails();
       throw ex;
     }
   }
@@ -273,10 +273,10 @@ public class KeySpaceManager implements KeySpaceManagerProtocol {
   @Override
   public void setQuota(String volume, long quota) throws IOException {
     try {
-      metrics.incNumVolumeModifies();
+      metrics.incNumVolumeUpdates();
       volumeManager.setQuota(volume, quota);
     } catch (Exception ex) {
-      metrics.incNumVolumeModifyFails();
+      metrics.incNumVolumeUpdateFails();
       throw ex;
     }
   }
@@ -511,10 +511,10 @@ public class KeySpaceManager implements KeySpaceManagerProtocol {
   public void setBucketProperty(KsmBucketArgs args)
       throws IOException {
     try {
-      metrics.incNumBucketModifies();
+      metrics.incNumBucketUpdates();
       bucketManager.setBucketProperty(args);
     } catch (Exception ex) {
-      metrics.incNumBucketModifyFails();
+      metrics.incNumBucketUpdateFails();
       throw ex;
     }
   }

http://git-wip-us.apache.org/repos/asf/hadoop/blob/2959102b/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/ozone/ksm/TestKSMMetrcis.java
----------------------------------------------------------------------
diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/ozone/ksm/TestKSMMetrcis.java
b/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/ozone/ksm/TestKSMMetrcis.java
new file mode 100644
index 0000000..f23d779
--- /dev/null
+++ b/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/ozone/ksm/TestKSMMetrcis.java
@@ -0,0 +1,306 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with this
+ * work for additional information regarding copyright ownership.  The ASF
+ * licenses this file to you 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
+ * <p>
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * <p>
+ * 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.
+ */
+package org.apache.hadoop.ozone.ksm;
+
+import static org.apache.hadoop.test.MetricsAsserts.assertCounter;
+import static org.apache.hadoop.test.MetricsAsserts.getMetrics;
+
+import java.io.IOException;
+
+import org.apache.hadoop.metrics2.MetricsRecordBuilder;
+import org.apache.hadoop.ozone.MiniOzoneCluster;
+import org.apache.hadoop.ozone.OzoneConfigKeys;
+import org.apache.hadoop.ozone.OzoneConfiguration;
+import org.apache.hadoop.ozone.OzoneConsts;
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+import org.mockito.Mockito;
+import org.mockito.internal.util.reflection.Whitebox;
+
+/**
+ * Test for KSM metrics.
+ */
+public class TestKSMMetrcis {
+  private MiniOzoneCluster cluster;
+  private KeySpaceManager ksmManager;
+
+  /**
+   * The exception used for testing failure metrics.
+   */
+  private IOException exception = new IOException();
+
+  /**
+   * Create a MiniDFSCluster for testing.
+   *
+   * @throws IOException
+   */
+  @Before
+  public void setup() throws Exception {
+    OzoneConfiguration conf = new OzoneConfiguration();
+    conf.set(OzoneConfigKeys.OZONE_HANDLER_TYPE_KEY,
+        OzoneConsts.OZONE_HANDLER_DISTRIBUTED);
+    cluster = new MiniOzoneCluster.Builder(conf)
+        .setHandlerType(OzoneConsts.OZONE_HANDLER_DISTRIBUTED).build();
+    ksmManager = cluster.getKeySpaceManager();
+  }
+
+  /**
+   * Shutdown MiniDFSCluster.
+   */
+  @After
+  public void shutdown() {
+    if (cluster != null) {
+      cluster.shutdown();
+    }
+  }
+
+  @Test
+  public void testVolumeOps() throws IOException {
+    VolumeManager volumeManager = (VolumeManager) Whitebox
+        .getInternalState(ksmManager, "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);
+
+    Whitebox.setInternalState(ksmManager, "volumeManager", mockVm);
+    doVolumeOps();
+
+    MetricsRecordBuilder ksmMetrics = getMetrics("KSMMetrics");
+    assertCounter("NumVolumeOps", 6L, ksmMetrics);
+    assertCounter("NumVolumeCreates", 1L, ksmMetrics);
+    assertCounter("NumVolumeUpdates", 1L, ksmMetrics);
+    assertCounter("NumVolumeInfos", 1L, ksmMetrics);
+    assertCounter("NumVolumeCheckAccesses", 1L, ksmMetrics);
+    assertCounter("NumVolumeDeletes", 1L, ksmMetrics);
+    assertCounter("NumVolumeLists", 1L, ksmMetrics);
+
+    // 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);
+
+    Whitebox.setInternalState(ksmManager, "volumeManager", mockVm);
+    doVolumeOps();
+
+    ksmMetrics = getMetrics("KSMMetrics");
+    assertCounter("NumVolumeOps", 12L, ksmMetrics);
+    assertCounter("NumVolumeCreates", 2L, ksmMetrics);
+    assertCounter("NumVolumeUpdates", 2L, ksmMetrics);
+    assertCounter("NumVolumeInfos", 2L, ksmMetrics);
+    assertCounter("NumVolumeCheckAccesses", 2L, ksmMetrics);
+    assertCounter("NumVolumeDeletes", 2L, ksmMetrics);
+    assertCounter("NumVolumeLists", 2L, ksmMetrics);
+
+    assertCounter("NumVolumeCreateFails", 1L, ksmMetrics);
+    assertCounter("NumVolumeUpdateFails", 1L, ksmMetrics);
+    assertCounter("NumVolumeInfoFails", 1L, ksmMetrics);
+    assertCounter("NumVolumeCheckAccessFails", 1L, ksmMetrics);
+    assertCounter("NumVolumeDeleteFails", 1L, ksmMetrics);
+    assertCounter("NumVolumeListFails", 1L, ksmMetrics);
+  }
+
+  @Test
+  public void testBucketOps() throws IOException {
+    BucketManager bucketManager = (BucketManager) Whitebox
+        .getInternalState(ksmManager, "bucketManager");
+    BucketManager mockBm = Mockito.spy(bucketManager);
+
+    Mockito.doNothing().when(mockBm).createBucket(null);
+    Mockito.doNothing().when(mockBm).deleteBucket(null, null);
+    Mockito.doReturn(null).when(mockBm).getBucketInfo(null, null);
+    Mockito.doNothing().when(mockBm).setBucketProperty(null);
+    Mockito.doReturn(null).when(mockBm).listBuckets(null, null, null, 0);
+
+    Whitebox.setInternalState(ksmManager, "bucketManager", mockBm);
+    doBucketOps();
+
+    MetricsRecordBuilder ksmMetrics = getMetrics("KSMMetrics");
+    assertCounter("NumBucketOps", 5L, ksmMetrics);
+    assertCounter("NumBucketCreates", 1L, ksmMetrics);
+    assertCounter("NumBucketUpdates", 1L, ksmMetrics);
+    assertCounter("NumBucketInfos", 1L, ksmMetrics);
+    assertCounter("NumBucketDeletes", 1L, ksmMetrics);
+    assertCounter("NumBucketLists", 1L, ksmMetrics);
+
+    // inject exception to test for Failure Metrics
+    Mockito.doThrow(exception).when(mockBm).createBucket(null);
+    Mockito.doThrow(exception).when(mockBm).deleteBucket(null, null);
+    Mockito.doThrow(exception).when(mockBm).getBucketInfo(null, null);
+    Mockito.doThrow(exception).when(mockBm).setBucketProperty(null);
+    Mockito.doThrow(exception).when(mockBm).listBuckets(null, null, null, 0);
+
+    Whitebox.setInternalState(ksmManager, "bucketManager", mockBm);
+    doBucketOps();
+
+    ksmMetrics = getMetrics("KSMMetrics");
+    assertCounter("NumBucketOps", 10L, ksmMetrics);
+    assertCounter("NumBucketCreates", 2L, ksmMetrics);
+    assertCounter("NumBucketUpdates", 2L, ksmMetrics);
+    assertCounter("NumBucketInfos", 2L, ksmMetrics);
+    assertCounter("NumBucketDeletes", 2L, ksmMetrics);
+    assertCounter("NumBucketLists", 2L, ksmMetrics);
+
+    assertCounter("NumBucketCreateFails", 1L, ksmMetrics);
+    assertCounter("NumBucketUpdateFails", 1L, ksmMetrics);
+    assertCounter("NumBucketInfoFails", 1L, ksmMetrics);
+    assertCounter("NumBucketDeleteFails", 1L, ksmMetrics);
+    assertCounter("NumBucketListFails", 1L, ksmMetrics);
+  }
+
+  @Test
+  public void testKeyOps() throws IOException {
+    KeyManager bucketManager = (KeyManager) Whitebox
+        .getInternalState(ksmManager, "keyManager");
+    KeyManager mockKm = Mockito.spy(bucketManager);
+
+    Mockito.doReturn(null).when(mockKm).allocateKey(null);
+    Mockito.doNothing().when(mockKm).deleteKey(null);
+    Mockito.doReturn(null).when(mockKm).lookupKey(null);
+    Mockito.doReturn(null).when(mockKm).listKeys(null, null, null, null, 0);
+
+    Whitebox.setInternalState(ksmManager, "keyManager", mockKm);
+    doKeyOps();
+
+    MetricsRecordBuilder ksmMetrics = getMetrics("KSMMetrics");
+    assertCounter("NumKeyOps", 4L, ksmMetrics);
+    assertCounter("NumKeyAllocate", 1L, ksmMetrics);
+    assertCounter("NumKeyLookup", 1L, ksmMetrics);
+    assertCounter("NumKeyDeletes", 1L, ksmMetrics);
+    assertCounter("NumKeyLists", 1L, ksmMetrics);
+
+    // inject exception to test for Failure Metrics
+    Mockito.doThrow(exception).when(mockKm).allocateKey(null);
+    Mockito.doThrow(exception).when(mockKm).deleteKey(null);
+    Mockito.doThrow(exception).when(mockKm).lookupKey(null);
+    Mockito.doThrow(exception).when(mockKm).listKeys(
+        null, null, null, null, 0);
+
+    Whitebox.setInternalState(ksmManager, "keyManager", mockKm);
+    doKeyOps();
+
+    ksmMetrics = getMetrics("KSMMetrics");
+    assertCounter("NumKeyOps", 8L, ksmMetrics);
+    assertCounter("NumKeyAllocate", 2L, ksmMetrics);
+    assertCounter("NumKeyLookup", 2L, ksmMetrics);
+    assertCounter("NumKeyDeletes", 2L, ksmMetrics);
+    assertCounter("NumKeyLists", 2L, ksmMetrics);
+
+    assertCounter("NumKeyAllocateFails", 1L, ksmMetrics);
+    assertCounter("NumKeyLookupFails", 1L, ksmMetrics);
+    assertCounter("NumKeyDeleteFails", 1L, ksmMetrics);
+    assertCounter("NumKeyListFails", 1L, ksmMetrics);
+  }
+
+  /**
+   * Test volume operations with ignoring thrown exception.
+   */
+  private void doVolumeOps() {
+    try {
+      ksmManager.createVolume(null);
+    } catch (IOException ignored) {
+    }
+
+    try {
+      ksmManager.deleteVolume(null);
+    } catch (IOException ignored) {
+    }
+
+    try {
+      ksmManager.getVolumeInfo(null);
+    } catch (IOException ignored) {
+    }
+
+    try {
+      ksmManager.checkVolumeAccess(null, null);
+    } catch (IOException ignored) {
+    }
+
+    try {
+      ksmManager.setOwner(null, null);
+    } catch (IOException ignored) {
+    }
+
+    try {
+      ksmManager.listAllVolumes(null, null, 0);
+    } catch (IOException ignored) {
+    }
+  }
+
+  /**
+   * Test bucket operations with ignoring thrown exception.
+   */
+  private void doBucketOps() {
+    try {
+      ksmManager.createBucket(null);
+    } catch (IOException ignored) {
+    }
+
+    try {
+      ksmManager.deleteBucket(null, null);
+    } catch (IOException ignored) {
+    }
+
+    try {
+      ksmManager.getBucketInfo(null, null);
+    } catch (IOException ignored) {
+    }
+
+    try {
+      ksmManager.setBucketProperty(null);
+    } catch (IOException ignored) {
+    }
+
+    try {
+      ksmManager.listBuckets(null, null, null, 0);
+    } catch (IOException ignored) {
+    }
+  }
+
+  /**
+   * Test key operations with ignoring thrown exception.
+   */
+  private void doKeyOps() {
+    try {
+      ksmManager.allocateKey(null);
+    } catch (IOException ignored) {
+    }
+
+    try {
+      ksmManager.deleteKey(null);
+    } catch (IOException ignored) {
+    }
+
+    try {
+      ksmManager.lookupKey(null);
+    } catch (IOException ignored) {
+    }
+
+    try {
+      ksmManager.listKeys(null, null, null, null, 0);
+    } catch (IOException ignored) {
+    }
+  }
+}


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