HDDS-2072. Make StorageContainerLocationProtocolService message based

Contributed by Elek, Marton.

Author: anuengineer

hadoop-hdds/common/src/main/java/org/apache/hadoop/hdds/scm/protocolPB/StorageContainerLocationProtocolClientSideTranslatorPB.java

@@ -26,7 +26,7 @@ option java_package = "org.apache.hadoop.hdds.protocol.proto";
 option java_outer_classname = "ScmBlockLocationProtocolProtos";
 option java_generic_services = true;
 option java_generate_equals_and_hash = true;
-package hadoop.hdds;
+package hadoop.hdds.block;
 
 import "hdds.proto";
 

hadoop-hdds/common/src/main/proto/ScmBlockLocationProtocol.proto

@@ -26,10 +26,100 @@ option java_package = "org.apache.hadoop.hdds.protocol.proto";
 option java_outer_classname = "StorageContainerLocationProtocolProtos";
 option java_generic_services = true;
 option java_generate_equals_and_hash = true;
-package hadoop.hdds;
+package hadoop.hdds.container;
 
 import "hdds.proto";
 
+/**
+  All functions are dispatched as Request/Response under Ozone.
+  if you add newe functions, please add them using same pattern.
+*/
+message ScmContainerLocationRequest {
+  required Type cmdType = 1; // Type of the command
+
+  // A string that identifies this command, we generate  Trace ID in Ozone
+  // frontend and this allows us to trace that command all over ozone.
+  optional string traceID = 2;
+
+  optional ContainerRequestProto containerRequest = 6;
+  optional GetContainerRequestProto getContainerRequest = 7;
+  optional GetContainerWithPipelineRequestProto getContainerWithPipelineRequest = 8;
+  optional SCMListContainerRequestProto scmListContainerRequest = 9;
+  optional SCMDeleteContainerRequestProto scmDeleteContainerRequest = 10;
+  optional NodeQueryRequestProto nodeQueryRequest = 11;
+  optional ObjectStageChangeRequestProto objectStageChangeRequest = 12;
+  optional PipelineRequestProto pipelineRequest = 13;
+  optional ListPipelineRequestProto listPipelineRequest = 14;
+  optional ActivatePipelineRequestProto activatePipelineRequest = 15;
+  optional DeactivatePipelineRequestProto deactivatePipelineRequest = 16;
+  optional ClosePipelineRequestProto closePipelineRequest = 17;
+  optional GetScmInfoRequestProto getScmInfoRequest = 18;
+  optional InSafeModeRequestProto inSafeModeRequest = 19;
+  optional ForceExitSafeModeRequestProto forceExitSafeModeRequest = 20;
+  optional StartReplicationManagerRequestProto startReplicationManagerRequest = 21;
+  optional StopReplicationManagerRequestProto stopReplicationManagerRequest = 22;
+  optional ReplicationManagerStatusRequestProto seplicationManagerStatusRequest = 23;
+
+}
+
+message ScmContainerLocationResponse {
+  required Type cmdType = 1; // Type of the command
+
+  optional string traceID = 2;
+
+  optional bool success = 3 [default = true];
+
+  optional string message = 4;
+
+  required Status status = 5;
+
+  optional ContainerResponseProto containerResponse = 6;
+  optional GetContainerResponseProto getContainerResponse = 7;
+  optional GetContainerWithPipelineResponseProto getContainerWithPipelineResponse = 8;
+  optional SCMListContainerResponseProto scmListContainerResponse = 9;
+  optional SCMDeleteContainerResponseProto scmDeleteContainerResponse = 10;
+  optional NodeQueryResponseProto nodeQueryResponse = 11;
+  optional ObjectStageChangeResponseProto objectStageChangeResponse = 12;
+  optional PipelineResponseProto pipelineResponse = 13;
+  optional ListPipelineResponseProto listPipelineResponse = 14;
+  optional ActivatePipelineResponseProto activatePipelineResponse = 15;
+  optional DeactivatePipelineResponseProto deactivatePipelineResponse = 16;
+  optional ClosePipelineResponseProto closePipelineResponse = 17;
+  optional GetScmInfoResponseProto getScmInfoResponse = 18;
+  optional InSafeModeResponseProto inSafeModeResponse = 19;
+  optional ForceExitSafeModeResponseProto forceExitSafeModeResponse = 20;
+  optional StartReplicationManagerResponseProto startReplicationManagerResponse = 21;
+  optional StopReplicationManagerResponseProto stopReplicationManagerResponse = 22;
+  optional ReplicationManagerStatusResponseProto replicationManagerStatusResponse = 23;
+  enum Status {
+    OK = 1;
+    CONTAINER_ALREADY_EXISTS = 2;
+    CONTAINER_IS_MISSING = 3;
+  }
+}
+
+enum Type {
+
+  AllocateContainer = 1;
+  GetContainer = 2;
+  GetContainerWithPipeline = 3;
+  ListContainer = 4;
+  DeleteContainer = 5;
+  QueryNode = 6;
+  NotifyObjectStageChange = 7;
+  AllocatePipeline = 8;
+  ListPipelines = 9;
+  ActivatePipeline = 10;
+  DeactivatePipeline = 11;
+  ClosePipeline = 12;
+  GetScmInfo = 13;
+  InSafeMode = 14;
+  ForceExitSafeMode = 15;
+  StartReplicationManager = 16;
+  StopReplicationManager = 17;
+  GetReplicationManagerStatus = 18;
+}
+
 /**
 * Request send to SCM asking where the container should be created.
 */
@@ -235,97 +325,6 @@ message ReplicationManagerStatusResponseProto {
  * and response messages for details of the RPC calls.
  */
 service StorageContainerLocationProtocolService {
+  rpc submitRequest (ScmContainerLocationRequest) returns (ScmContainerLocationResponse);
 
-  /**
-   * Creates a container entry in SCM.
-   */
-  rpc allocateContainer(ContainerRequestProto) returns (ContainerResponseProto);
-
-  /**
-   * Returns the pipeline for a given container.
-   */
-  rpc getContainer(GetContainerRequestProto) returns (GetContainerResponseProto);
-
-  /**
-   * Returns the pipeline for a given container.
-   */
-  rpc getContainerWithPipeline(GetContainerWithPipelineRequestProto) returns (GetContainerWithPipelineResponseProto);
-
-  rpc listContainer(SCMListContainerRequestProto) returns (SCMListContainerResponseProto);
-
-  /**
-   * Deletes a container in SCM.
-   */
-  rpc deleteContainer(SCMDeleteContainerRequestProto) returns (SCMDeleteContainerResponseProto);
-
-  /**
-  * Returns a set of Nodes that meet a criteria.
-  */
-  rpc queryNode(NodeQueryRequestProto) returns (NodeQueryResponseProto);
-
-  /**
-  * Notify from client when begin or finish container or pipeline operations on datanodes.
-  */
-  rpc notifyObjectStageChange(ObjectStageChangeRequestProto) returns (ObjectStageChangeResponseProto);
-
-  /*
-  *  Apis that Manage Pipelines.
-  *
-  * Pipelines are abstractions offered by SCM and Datanode that allows users
-  * to create a replication pipeline.
-  *
-  *  These following APIs allow command line programs like SCM CLI to list
-  * and manage pipelines.
-  */
-
-  /**
-  *  Creates a replication pipeline.
-  */
-  rpc allocatePipeline(PipelineRequestProto)
-      returns (PipelineResponseProto);
-
-  /**
-   * Returns the list of Pipelines managed by SCM.
-   */
-  rpc listPipelines(ListPipelineRequestProto)
-      returns (ListPipelineResponseProto);
-
-  rpc activatePipeline(ActivatePipelineRequestProto)
-      returns (ActivatePipelineResponseProto);
-
-  rpc deactivatePipeline(DeactivatePipelineRequestProto)
-      returns (DeactivatePipelineResponseProto);
-
-  /**
-   * Closes a pipeline.
-   */
-  rpc closePipeline(ClosePipelineRequestProto)
-      returns (ClosePipelineResponseProto);
-
-  /**
-  *  Returns information about SCM.
-  */
-  rpc getScmInfo(GetScmInfoRequestProto)
-      returns (GetScmInfoResponseProto);
-
-  /**
-  *  Checks if SCM is in SafeMode.
-  */
-  rpc inSafeMode(InSafeModeRequestProto)
-  returns (InSafeModeResponseProto);
-
-  /**
-  *  Returns information about SCM.
-  */
-  rpc forceExitSafeMode(ForceExitSafeModeRequestProto)
-  returns (ForceExitSafeModeResponseProto);
-
-  rpc startReplicationManager(StartReplicationManagerRequestProto)
-  returns (StartReplicationManagerResponseProto);
-
-  rpc stopReplicationManager(StopReplicationManagerRequestProto)
-  returns (StopReplicationManagerResponseProto);
-
-  rpc getReplicationManagerStatus(ReplicationManagerStatusRequestProto)
-  returns (ReplicationManagerStatusResponseProto);
 }