/** Creates an input gate and all of its input channels. */
public static SingleInputGate create(
String owningTaskName,
JobID jobId,
ExecutionAttemptID executionId,
InputGateDeploymentDescriptor igdd,
NetworkEnvironment networkEnvironment) {
final IntermediateDataSetID consumedResultId = checkNotNull(igdd.getConsumedResultId());
final int consumedSubpartitionIndex = igdd.getConsumedSubpartitionIndex();
checkArgument(consumedSubpartitionIndex >= 0);
final InputChannelDeploymentDescriptor[] icdd =
checkNotNull(igdd.getInputChannelDeploymentDescriptors());
final SingleInputGate inputGate =
new SingleInputGate(
owningTaskName,
jobId,
executionId,
consumedResultId,
consumedSubpartitionIndex,
icdd.length,
networkEnvironment.getPartitionStateChecker());
// Create the input channels. There is one input channel for each consumed partition.
final InputChannel[] inputChannels = new InputChannel[icdd.length];
for (int i = 0; i < inputChannels.length; i++) {
final ResultPartitionID partitionId = icdd[i].getConsumedPartitionId();
final ResultPartitionLocation partitionLocation = icdd[i].getConsumedPartitionLocation();
if (partitionLocation.isLocal()) {
inputChannels[i] =
new LocalInputChannel(
inputGate,
i,
partitionId,
networkEnvironment.getPartitionManager(),
networkEnvironment.getTaskEventDispatcher(),
networkEnvironment.getPartitionRequestInitialAndMaxBackoff());
} else if (partitionLocation.isRemote()) {
inputChannels[i] =
new RemoteInputChannel(
inputGate,
i,
partitionId,
partitionLocation.getConnectionId(),
networkEnvironment.getConnectionManager(),
networkEnvironment.getPartitionRequestInitialAndMaxBackoff());
} else if (partitionLocation.isUnknown()) {
inputChannels[i] =
new UnknownInputChannel(
inputGate,
i,
partitionId,
networkEnvironment.getPartitionManager(),
networkEnvironment.getTaskEventDispatcher(),
networkEnvironment.getConnectionManager(),
networkEnvironment.getPartitionRequestInitialAndMaxBackoff());
} else {
throw new IllegalStateException("Unexpected partition location.");
}
inputGate.setInputChannel(partitionId.getPartitionId(), inputChannels[i]);
}
LOG.debug("Created input channels {} from {}.", Arrays.toString(inputChannels), igdd);
return inputGate;
}
