HBASE-25842 move regionserver http-related code into o.a.h.h.regionserver.http

Signed-off-by: Duo Zhang <zhangduo@apache.org>

hbase-server/src/main/java/org/apache/hadoop/hbase/master/MasterDumpServlet.java

@@ -33,7 +33,7 @@ import org.apache.hadoop.hbase.master.assignment.AssignmentManager;
 import org.apache.hadoop.hbase.master.assignment.RegionStateNode;
 import org.apache.hadoop.hbase.monitoring.StateDumpServlet;
 import org.apache.hadoop.hbase.monitoring.TaskMonitor;
-import org.apache.hadoop.hbase.regionserver.RSDumpServlet;
+import org.apache.hadoop.hbase.regionserver.http.RSDumpServlet;
 import org.apache.hadoop.hbase.util.LogMonitoring;
 import org.apache.hadoop.hbase.util.Threads;
 import org.apache.yetus.audience.InterfaceAudience;

hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HRegionServer.java

@@ -24,6 +24,7 @@ import static org.apache.hadoop.hbase.HConstants.HBASE_SPLIT_WAL_MAX_SPLITTER;
 import static org.apache.hadoop.hbase.util.DNS.UNSAFE_RS_HOSTNAME_KEY;
 
 import java.io.IOException;
+import java.io.PrintWriter;
 import java.lang.management.MemoryType;
 import java.lang.management.MemoryUsage;
 import java.lang.reflect.Constructor;
@@ -141,6 +142,8 @@ import org.apache.hadoop.hbase.regionserver.handler.CloseMetaHandler;
 import org.apache.hadoop.hbase.regionserver.handler.CloseRegionHandler;
 import org.apache.hadoop.hbase.regionserver.handler.RSProcedureHandler;
 import org.apache.hadoop.hbase.regionserver.handler.RegionReplicaFlushHandler;
+import org.apache.hadoop.hbase.regionserver.http.RSDumpServlet;
+import org.apache.hadoop.hbase.regionserver.http.RSStatusServlet;
 import org.apache.hadoop.hbase.regionserver.throttle.FlushThroughputControllerFactory;
 import org.apache.hadoop.hbase.regionserver.throttle.ThroughputController;
 import org.apache.hadoop.hbase.replication.regionserver.ReplicationLoad;
@@ -818,6 +821,24 @@ public class HRegionServer extends Thread implements
     return RSDumpServlet.class;
   }
 
+  /**
+   * Used by {@link RSDumpServlet} to generate debugging information.
+   */
+  public void dumpRowLocks(final PrintWriter out) {
+    StringBuilder sb = new StringBuilder();
+    for (HRegion region : getRegions()) {
+      if (region.getLockedRows().size() > 0) {
+        for (HRegion.RowLockContext rowLockContext : region.getLockedRows().values()) {
+          sb.setLength(0);
+          sb.append(region.getTableDescriptor().getTableName()).append(",")
+            .append(region.getRegionInfo().getEncodedName()).append(",");
+          sb.append(rowLockContext.toString());
+          out.println(sb);
+        }
+      }
+    }
+  }
+
   @Override
   public boolean registerService(Service instance) {
     // No stacking of instances is allowed for a single executorService name
@@ -3746,7 +3767,7 @@ public class HRegionServer extends Thread implements
     return hMemManager;
   }
 
-  MemStoreFlusher getMemStoreFlusher() {
+  public MemStoreFlusher getMemStoreFlusher() {
     return cacheFlusher;
   }
 

hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/MemStoreFlusher.java

@@ -67,7 +67,7 @@ import org.apache.hbase.thirdparty.com.google.common.util.concurrent.ThreadFacto
  * @see FlushRequester
  */
 @InterfaceAudience.Private
-class MemStoreFlusher implements FlushRequester {
+public class MemStoreFlusher implements FlushRequester {
   private static final Logger LOG = LoggerFactory.getLogger(MemStoreFlusher.class);
 
   private Configuration conf;

hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/http/RSDumpServlet.java

@@ -16,7 +16,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package org.apache.hadoop.hbase.regionserver;
+package org.apache.hadoop.hbase.regionserver.http;
 
 import java.io.IOException;
 import java.io.OutputStream;
@@ -29,6 +29,9 @@ import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.hbase.ipc.CallQueueInfo;
 import org.apache.hadoop.hbase.monitoring.StateDumpServlet;
 import org.apache.hadoop.hbase.monitoring.TaskMonitor;
+import org.apache.hadoop.hbase.regionserver.CompactSplit;
+import org.apache.hadoop.hbase.regionserver.HRegionServer;
+import org.apache.hadoop.hbase.regionserver.MemStoreFlusher;
 import org.apache.hadoop.hbase.util.LogMonitoring;
 import org.apache.hadoop.hbase.util.Threads;
 import org.apache.yetus.audience.InterfaceAudience;
@@ -70,7 +73,7 @@ public class RSDumpServlet extends StateDumpServlet {
 
       out.println("\n\nRowLocks:");
       out.println(LINE);
-      dumpRowLock(hrs, out);
+      hrs.dumpRowLocks(out);
 
       out.println("\n\nExecutors:");
       out.println(LINE);
@@ -108,22 +111,6 @@ public class RSDumpServlet extends StateDumpServlet {
     }
   }
 
-  public static void dumpRowLock(HRegionServer hrs, PrintWriter out) {
-    StringBuilder sb = new StringBuilder();
-    for (Region region : hrs.getRegions()) {
-      HRegion hRegion = (HRegion)region;
-      if (hRegion.getLockedRows().size() > 0) {
-        for (HRegion.RowLockContext rowLockContext : hRegion.getLockedRows().values()) {
-          sb.setLength(0);
-          sb.append(hRegion.getTableDescriptor().getTableName()).append(",")
-            .append(hRegion.getRegionInfo().getEncodedName()).append(",");
-          sb.append(rowLockContext.toString());
-          out.println(sb.toString());
-        }
-      }
-    }
-  }
-
   public static void dumpQueue(HRegionServer hrs, PrintWriter out) {
     final CompactSplit compactSplit = hrs.getCompactSplitThread();
     if (compactSplit != null) {
@@ -143,7 +130,7 @@ public class RSDumpServlet extends StateDumpServlet {
 
 
   public static void dumpCallQueues(HRegionServer hrs, PrintWriter out) {
-    CallQueueInfo callQueueInfo = hrs.rpcServices.rpcServer.getScheduler().getCallQueueInfo();
+    CallQueueInfo callQueueInfo = hrs.getRpcServer().getScheduler().getCallQueueInfo();
 
     for(String queueName: callQueueInfo.getCallQueueNames()) {
 
@@ -165,7 +152,5 @@ public class RSDumpServlet extends StateDumpServlet {
       out.println("Total call count for queue: "+totalCallCount);
       out.println("Total call size for queue (bytes): "+totalCallSize);
     }
-
   }
-
 }

hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/http/RSStatusServlet.java

@@ -16,7 +16,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package org.apache.hadoop.hbase.regionserver;
+package org.apache.hadoop.hbase.regionserver.http;
 
 import java.io.IOException;
 
@@ -24,6 +24,7 @@ import javax.servlet.ServletException;
 import javax.servlet.http.HttpServlet;
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
+import org.apache.hadoop.hbase.regionserver.HRegionServer;
 import org.apache.yetus.audience.InterfaceAudience;
 
 import org.apache.hadoop.hbase.tmpl.regionserver.RSStatusTmpl;

hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/http/TestRSStatusServlet.java

@@ -15,7 +15,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package org.apache.hadoop.hbase.regionserver;
+package org.apache.hadoop.hbase.regionserver.http;
 
 import java.io.IOException;
 import java.io.StringWriter;
@@ -34,6 +34,10 @@ import org.apache.hadoop.hbase.io.ByteBuffAllocator;
 import org.apache.hadoop.hbase.ipc.MetricsHBaseServer;
 import org.apache.hadoop.hbase.ipc.MetricsHBaseServerWrapperStub;
 import org.apache.hadoop.hbase.ipc.RpcServerInterface;
+import org.apache.hadoop.hbase.regionserver.HRegionServer;
+import org.apache.hadoop.hbase.regionserver.MetricsRegionServer;
+import org.apache.hadoop.hbase.regionserver.MetricsRegionServerWrapperStub;
+import org.apache.hadoop.hbase.regionserver.RSRpcServices;
 import org.apache.hadoop.hbase.testclassification.RegionServerTests;
 import org.apache.hadoop.hbase.testclassification.SmallTests;
 import org.apache.hadoop.hbase.tmpl.regionserver.RSStatusTmpl;