HBASE-15571 Make MasterProcedureManagerHost accessible through MasterServices

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

@@ -326,7 +326,7 @@ public class HMaster extends HRegionServer implements MasterServices, Server {
   // monitor for snapshot of hbase tables
   SnapshotManager snapshotManager;
   // monitor for distributed procedures
-  MasterProcedureManagerHost mpmHost;
+  private MasterProcedureManagerHost mpmHost;
 
   // it is assigned after 'initialized' guard set to true, so should be volatile
   private volatile MasterQuotaManager quotaManager;
@@ -2484,6 +2484,13 @@ public class HMaster extends HRegionServer implements MasterServices, Server {
     return this.snapshotManager;
   }
 
+  /**
+   * @return the underlying MasterProcedureManagerHost
+   */
+  public MasterProcedureManagerHost getMasterProcedureManagerHost() {
+    return mpmHost;
+  }
+
   @Override
   public void createNamespace(
       final NamespaceDescriptor descriptor,

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

@@ -725,7 +725,7 @@ public class MasterRpcServices extends RSRpcServices
     try {
       master.checkInitialized();
       ProcedureDescription desc = request.getProcedure();
-      MasterProcedureManager mpm = master.mpmHost.getProcedureManager(
+      MasterProcedureManager mpm = master.getMasterProcedureManagerHost().getProcedureManager(
         desc.getSignature());
       if (mpm == null) {
         throw new ServiceException("The procedure is not registered: "
@@ -760,7 +760,7 @@ public class MasterRpcServices extends RSRpcServices
     try {
       master.checkInitialized();
       ProcedureDescription desc = request.getProcedure();
-      MasterProcedureManager mpm = master.mpmHost.getProcedureManager(
+      MasterProcedureManager mpm = master.getMasterProcedureManagerHost().getProcedureManager(
         desc.getSignature());
       if (mpm == null) {
         throw new ServiceException("The procedure is not registered: "
@@ -963,7 +963,7 @@ public class MasterRpcServices extends RSRpcServices
     try {
       master.checkInitialized();
       ProcedureDescription desc = request.getProcedure();
-      MasterProcedureManager mpm = master.mpmHost.getProcedureManager(
+      MasterProcedureManager mpm = master.getMasterProcedureManagerHost().getProcedureManager(
         desc.getSignature());
       if (mpm == null) {
         throw new ServiceException("The procedure is not registered: "

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

@@ -34,6 +34,7 @@ import org.apache.hadoop.hbase.TableNotDisabledException;
 import org.apache.hadoop.hbase.TableNotFoundException;
 import org.apache.hadoop.hbase.master.procedure.MasterProcedureEnv;
 import org.apache.hadoop.hbase.master.snapshot.SnapshotManager;
+import org.apache.hadoop.hbase.procedure.MasterProcedureManagerHost;
 import org.apache.hadoop.hbase.procedure2.ProcedureExecutor;
 import org.apache.hadoop.hbase.executor.ExecutorService;
 import org.apache.hadoop.hbase.quotas.MasterQuotaManager;
@@ -51,6 +52,11 @@ public interface MasterServices extends Server {
    */
   SnapshotManager getSnapshotManager();
 
+  /**
+   * @return the underlying MasterProcedureManagerHost
+   */
+  MasterProcedureManagerHost getMasterProcedureManagerHost();
+
   /**
    * @return Master's instance of the {@link AssignmentManager}
    */

hbase-server/src/test/java/org/apache/hadoop/hbase/master/TestCatalogJanitor.java

@@ -65,6 +65,7 @@ import org.apache.hadoop.hbase.io.Reference;
 import org.apache.hadoop.hbase.master.CatalogJanitor.SplitParentFirstComparator;
 import org.apache.hadoop.hbase.master.procedure.MasterProcedureEnv;
 import org.apache.hadoop.hbase.master.snapshot.SnapshotManager;
+import org.apache.hadoop.hbase.procedure.MasterProcedureManagerHost;
 import org.apache.hadoop.hbase.procedure2.ProcedureExecutor;
 import org.apache.hadoop.hbase.protobuf.ProtobufUtil;
 import org.apache.hadoop.hbase.protobuf.generated.AdminProtos;
@@ -241,6 +242,11 @@ public class TestCatalogJanitor {
       return null;
     }
 
+    @Override
+    public MasterProcedureManagerHost getMasterProcedureManagerHost() {
+      return null;
+    }
+
     @Override
     public AssignmentManager getAssignmentManager() {
       return this.asm;