Examples of org.apache.hadoop.hbase.client.Table.coprocessorService()

Class org.apache.hadoop.hbase.client.Table

Examples of org.apache.hadoop.hbase.client.Table.coprocessorService()

org.apache.hadoop.hbase.client.Table.coprocessorService()
Creates and returns a {@link com.google.protobuf.RpcChannel} instance connected to thetable region containing the specified row. The row given does not actually have to exist. Whichever region would contain the row based on start and end keys will be used. Note that the {@code row} parameter is also not passed to thecoprocessor handler registered for this protocol, unless the {@code row}is separately passed as an argument in the service request. The parameter here is only used to locate the region used to handle the call.
The obtained {@link com.google.protobuf.RpcChannel} instance can be used to access a publishedcoprocessor {@link com.google.protobuf.Service} using standard protobuf service invocations:
```
 CoprocessorRpcChannel channel = myTable.coprocessorService(rowkey); MyService.BlockingInterface service = MyService.newBlockingStub(channel); MyCallRequest request = MyCallRequest.newBuilder() ... .build(); MyCallResponse response = service.myCall(null, request); 
```
@param row The row key used to identify the remote region location @return A CoprocessorRpcChannel instance

    SecureTestUtil.updateACLs(util, new Callable<Void>() {
      @Override
      public Void call() throws Exception {
        Table acl = new HTable(util.getConfiguration(), AccessControlLists.ACL_TABLE_NAME);
        try {
          BlockingRpcChannel service = acl.coprocessorService(HConstants.EMPTY_START_ROW);
          AccessControlService.BlockingInterface protocol =
              AccessControlService.newBlockingStub(service);
          ProtobufUtil.revoke(protocol, user, namespace, actions);
        } finally {
          acl.close();

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    SecureTestUtil.updateACLs(util, new Callable<Void>() {
      @Override
      public Void call() throws Exception {
        Table acl = new HTable(util.getConfiguration(), AccessControlLists.ACL_TABLE_NAME);
        try {
          BlockingRpcChannel service = acl.coprocessorService(HConstants.EMPTY_START_ROW);
          AccessControlService.BlockingInterface protocol =
              AccessControlService.newBlockingStub(service);
          ProtobufUtil.grant(protocol, user, table, family, qualifier, actions);
        } finally {
          acl.close();

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    SecureTestUtil.updateACLs(util, new Callable<Void>() {
      @Override
      public Void call() throws Exception {
        Table acl = new HTable(util.getConfiguration(), AccessControlLists.ACL_TABLE_NAME);
        try {
          BlockingRpcChannel service = acl.coprocessorService(HConstants.EMPTY_START_ROW);
          AccessControlService.BlockingInterface protocol =
              AccessControlService.newBlockingStub(service);
          ProtobufUtil.revoke(protocol, user, table, family, qualifier, actions);
        } finally {
          acl.close();

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    LOG.info("Did george");
    hello(table, null, "Who are you?");
    LOG.info("Who are you");
    hello(table, NOBODY, null);
    LOG.info(NOBODY);
    Map<byte [], Integer> intResults = table.coprocessorService(PingProtos.PingService.class,
      null, null,
      new Batch.Call<PingProtos.PingService, Integer>() {
        @Override
        public Integer call(PingProtos.PingService instance) throws IOException {
          BlockingRpcCallback<PingProtos.CountResponse> rpcCallback =

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    for (Map.Entry<byte [], Integer> e: intResults.entrySet()) {
      assertTrue(e.getValue() > 0);
      count = e.getValue();
    }
    final int diff = 5;
    intResults = table.coprocessorService(PingProtos.PingService.class,
      null, null,
      new Batch.Call<PingProtos.PingService, Integer>() {
        @Override
        public Integer call(PingProtos.PingService instance) throws IOException {
          BlockingRpcCallback<PingProtos.IncrementCountResponse> rpcCallback =

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    // Make it not retry forever
    configuration.setInt(HConstants.HBASE_CLIENT_RETRIES_NUMBER, 1);
    Table table = new HTable(configuration, TEST_TABLE);


    try {
      CoprocessorRpcChannel protocol = table.coprocessorService(ROWS[0]);


      TestRpcServiceProtos.TestProtobufRpcProto.BlockingInterface service =
          TestRpcServiceProtos.TestProtobufRpcProto.newBlockingStub(protocol);


      service.error(null, TestProtos.EmptyRequestProto.getDefaultInstance());

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    AccessTestAction grantAction = new AccessTestAction() {
      public Object run() throws Exception {
        Table acl = new HTable(conf, AccessControlLists.ACL_TABLE_NAME);
        try {
          BlockingRpcChannel service =
              acl.coprocessorService(HConstants.EMPTY_START_ROW);
          AccessControlService.BlockingInterface protocol =
            AccessControlService.newBlockingStub(service);
          ProtobufUtil.grant(protocol, testUser, TestNamespace, Action.WRITE);
        } finally {
          acl.close();

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    AccessTestAction revokeAction = new AccessTestAction() {
      public Object run() throws Exception {
        Table acl = new HTable(conf, AccessControlLists.ACL_TABLE_NAME);
        try {
          BlockingRpcChannel service =
              acl.coprocessorService(HConstants.EMPTY_START_ROW);
          AccessControlService.BlockingInterface protocol =
            AccessControlService.newBlockingStub(service);
          ProtobufUtil.revoke(protocol, testUser, TestNamespace, Action.WRITE);
        } finally {
          acl.close();

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  public static Token<AuthenticationTokenIdentifier> obtainToken(
      Configuration conf) throws IOException {
    Table meta = null;
    try {
      meta = new HTable(conf, TableName.META_TABLE_NAME);
      CoprocessorRpcChannel rpcChannel = meta.coprocessorService(HConstants.EMPTY_START_ROW);
      AuthenticationProtos.AuthenticationService.BlockingInterface service =
          AuthenticationProtos.AuthenticationService.newBlockingStub(rpcChannel);
      AuthenticationProtos.GetAuthenticationTokenResponse response = service.getAuthenticationToken(null,
          AuthenticationProtos.GetAuthenticationTokenRequest.getDefaultInstance());

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      request.addPermission(ProtobufUtil.toPermission(p));
    }
    Table acl = new HTable(conf, table);
    try {
      AccessControlService.BlockingInterface protocol =
        AccessControlService.newBlockingStub(acl.coprocessorService(new byte[0]));
      try {
        protocol.checkPermissions(null, request.build());
      } catch (ServiceException se) {
        ProtobufUtil.toIOException(se);
      }

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