[ROCKETMQ-209]Remove duplicated code in class MQClientAPIImpl

Author: Ritabrata Moitra <rmoitra@thoughtworks.com>

Closes #134 from Ritabrata-TW/master.

store/src/main/java/org/apache/rocketmq/store/DefaultMessageStore.java

@@ -413,7 +413,8 @@ public class DefaultMessageStore implements MessageStore {
         return commitLog;
     }
 
-    public GetMessageResult getMessage(final String group, final String topic, final int queueId, final long offset, final int maxMsgNums,
+    public GetMessageResult getMessage(final String group, final String topic, final int queueId, final long offset,
+        final int maxMsgNums,
         final MessageFilter messageFilter) {
         if (this.shutdown) {
             log.warn("message store has shutdown, so getMessage is forbidden");
@@ -717,6 +718,13 @@ public class DefaultMessageStore implements MessageStore {
             long minLogicOffset = logicQueue.getMinLogicOffset();
 
             SelectMappedBufferResult result = logicQueue.getIndexBuffer(minLogicOffset / ConsumeQueue.CQ_STORE_UNIT_SIZE);
+            return getStoreTime(result);
+        }
+
+        return -1;
+    }
+
+    private long getStoreTime(SelectMappedBufferResult result) {
         if (result != null) {
             try {
                 final long phyOffset = result.getByteBuffer().getLong();
@@ -728,8 +736,6 @@ public class DefaultMessageStore implements MessageStore {
                 result.release();
             }
         }
-        }
-
         return -1;
     }
 
@@ -745,17 +751,7 @@ public class DefaultMessageStore implements MessageStore {
         ConsumeQueue logicQueue = this.findConsumeQueue(topic, queueId);
         if (logicQueue != null) {
             SelectMappedBufferResult result = logicQueue.getIndexBuffer(consumeQueueOffset);
-            if (result != null) {
-                try {
-                    final long phyOffset = result.getByteBuffer().getLong();
-                    final int size = result.getByteBuffer().getInt();
-                    long storeTime = this.getCommitLog().pickupStoreTimestamp(phyOffset, size);
-                    return storeTime;
-                } catch (Exception ignored) {
-                } finally {
-                    result.release();
-                }
-            }
+            return getStoreTime(result);
         }
 
         return -1;
@@ -955,7 +951,8 @@ public class DefaultMessageStore implements MessageStore {
         }
     }
 
-    public Map<String, Long> getMessageIds(final String topic, final int queueId, long minOffset, long maxOffset, SocketAddress storeHost) {
+    public Map<String, Long> getMessageIds(final String topic, final int queueId, long minOffset, long maxOffset,
+        SocketAddress storeHost) {
         Map<String, Long> messageIds = new HashMap<String, Long>();
         if (this.shutdown) {
             return messageIds;

store/src/test/java/org/apache/rocketmq/store/DefaultMessageStoreTest.java

@@ -77,20 +77,7 @@ public class DefaultMessageStoreTest {
         assertTrue(load);
 
         master.start();
-        try {
-            for (long i = 0; i < totalMsgs; i++) {
-                master.putMessage(buildMessage());
-            }
-
-            for (long i = 0; i < totalMsgs; i++) {
-                GetMessageResult result = master.getMessage("GROUP_A", "TOPIC_A", 0, i, 1024 * 1024, null);
-                assertThat(result).isNotNull();
-                result.release();
-            }
-        } finally {
-            master.shutdown();
-            master.destroy();
-        }
+        verifyThatMasterIsFunctional(totalMsgs, master);
     }
 
     public MessageExtBrokerInner buildMessage() {
@@ -121,6 +108,10 @@ public class DefaultMessageStoreTest {
         assertTrue(load);
 
         master.start();
+        verifyThatMasterIsFunctional(totalMsgs, master);
+    }
+
+    private void verifyThatMasterIsFunctional(long totalMsgs, MessageStore master) {
         try {
             for (long i = 0; i < totalMsgs; i++) {
                 master.putMessage(buildMessage());