Examples of org.apache.hadoop.hbase.client.coprocessor.Exec

Package org.apache.hadoop.hbase.client.coprocessor

Examples of org.apache.hadoop.hbase.client.coprocessor.Exec

org.apache.hadoop.hbase.client.coprocessor.Exec
Represents an arbitrary method invocation against a Coprocessor instance. In order for a coprocessor implementation to be remotely callable by clients, it must define and implement a {@link CoprocessorProtocol}subclass. Only methods defined in the {@code CoprocessorProtocol} interfacewill be callable by clients.
This class is used internally by {@link org.apache.hadoop.hbase.client.HTable#coprocessorExec(Class,byte[],byte[],org.apache.hadoop.hbase.client.coprocessor.Batch.Call,org.apache.hadoop.hbase.client.coprocessor.Batch.Callback)}to wrap the {@code CoprocessorProtocol} method invocations requested inRPC calls. It should not be used directly by HBase clients.
@see ExecResult @see org.apache.hadoop.hbase.client.HTable#coprocessorExec(Class,byte[],byte[],org.apache.hadoop.hbase.client.coprocessor.Batch.Call) @see org.apache.hadoop.hbase.client.HTable#coprocessorExec(Class,byte[],byte[],org.apache.hadoop.hbase.client.coprocessor.Batch.Call,org.apache.hadoop.hbase.client.coprocessor.Batch.Callback)

    dob.writeUTF(protocolName);


    DataInputBuffer dib = new DataInputBuffer();
    dib.reset(dob.getData(), dob.getLength());


    Exec after = new Exec();
    after.setConf(HBaseConfiguration.create());
    after.readFields(dib);
    // no error thrown
    assertEquals(after.getProtocolName(), protocolName);
    assertEquals(after.getMethodName(), methodName);
  }

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  public Object invoke(Object instance, final Method method, final Object[] args)
      throws Throwable {
    if (LOG.isDebugEnabled()) {
      LOG.debug("Call: "+method.getName()+", "+(args != null ? args.length : 0));
    }
    Exec exec = new Exec(conf, protocol, method, args);
    ExecResult result = connection.getMaster().execCoprocessor(exec);
    LOG.debug("Master Result is value="+result.getValue());
    return result.getValue();
  }

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    if (LOG.isDebugEnabled()) {
      LOG.debug("Call: "+method.getName()+", "+(args != null ? args.length : 0));
    }


    if (row != null) {
      final Exec exec = new Exec(conf, row, protocol, method, args);
      ServerCallable<ExecResult> callable =
          new ServerCallable<ExecResult>(connection, table, row) {
            public ExecResult call() throws Exception {
              return server.execCoprocessor(location.getRegionInfo().getRegionName(),
                  exec);

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    dob.writeUTF(protocolName);


    DataInputBuffer dib = new DataInputBuffer();
    dib.reset(dob.getData(), dob.getLength());


    Exec after = new Exec();
    after.readFields(dib);
    // no error thrown
    assertEquals(after.getProtocolName(), protocolName);
    assertEquals(after.getMethodName(), methodName);
  }

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    if (LOG.isDebugEnabled()) {
      LOG.debug("Call: "+method.getName()+", "+(args != null ? args.length : 0));
    }


    if (row != null) {
      final Exec exec = new Exec(conf, row, protocol, method, args);
      ServerCallable<ExecResult> callable =
          new ServerCallable<ExecResult>(connection, table, row) {
            public ExecResult call() throws Exception {
              return server.execCoprocessor(location.getRegionInfo().getRegionName(),
                  exec);

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    dob.writeUTF(protocolName);


    DataInputBuffer dib = new DataInputBuffer();
    dib.reset(dob.getData(), dob.getLength());


    Exec after = new Exec();
    after.setConf(HBaseConfiguration.create());
    after.readFields(dib);
    // no error thrown
    assertEquals(after.getProtocolName(), protocolName);
    assertEquals(after.getMethodName(), methodName);
  }

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    dob.writeUTF(protocolName);


    DataInputBuffer dib = new DataInputBuffer();
    dib.reset(dob.getData(), dob.getLength());


    Exec after = new Exec();
    after.setConf(HBaseConfiguration.create());
    after.readFields(dib);
    // no error thrown
    assertEquals(after.getProtocolName(), protocolName);
    assertEquals(after.getMethodName(), methodName);
  }

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Related Classes of org.apache.hadoop.hbase.client.coprocessor.Exec

org.apache.hadoop.hbase.coprocessor.TestCoprocessorEndpoint

org.apache.hadoop.hbase.io.HbaseObjectWritable

org.apache.hadoop.hbase.ipc.ExecRPCInvoker

org.apache.hadoop.hbase.ipc.MasterExecRPCInvoker

java.io.IOException

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