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SavepointTaskStateManager.java
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SavepointTaskStateManager.java
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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.flink.state.api.runtime;
import org.apache.flink.runtime.checkpoint.CheckpointMetaData;
import org.apache.flink.runtime.checkpoint.CheckpointMetrics;
import org.apache.flink.runtime.checkpoint.PrioritizedOperatorSubtaskState;
import org.apache.flink.runtime.checkpoint.TaskStateSnapshot;
import org.apache.flink.runtime.checkpoint.channel.SequentialChannelStateReader;
import org.apache.flink.runtime.jobgraph.OperatorID;
import org.apache.flink.runtime.state.LocalRecoveryConfig;
import org.apache.flink.runtime.state.LocalRecoveryDirectoryProvider;
import org.apache.flink.runtime.state.TaskStateManager;
import org.apache.flink.util.Preconditions;
import javax.annotation.Nonnull;
import javax.annotation.Nullable;
/**
* A minimally implemented {@link TaskStateManager} that provides the functionality required to run
* the {@code state-processor-api}.
*/
final class SavepointTaskStateManager implements TaskStateManager {
private static final String MSG = "This method should never be called";
@Nonnull private final PrioritizedOperatorSubtaskState prioritizedOperatorSubtaskState;
SavepointTaskStateManager(PrioritizedOperatorSubtaskState prioritizedOperatorSubtaskState) {
Preconditions.checkNotNull(
prioritizedOperatorSubtaskState, "Operator subtask state must not be null");
this.prioritizedOperatorSubtaskState = prioritizedOperatorSubtaskState;
}
@Override
public void reportTaskStateSnapshots(
@Nonnull CheckpointMetaData checkpointMetaData,
@Nonnull CheckpointMetrics checkpointMetrics,
@Nullable TaskStateSnapshot acknowledgedState,
@Nullable TaskStateSnapshot localState) {}
@Override
public void reportIncompleteTaskStateSnapshots(
CheckpointMetaData checkpointMetaData, CheckpointMetrics checkpointMetrics) {}
@Nonnull
@Override
public PrioritizedOperatorSubtaskState prioritizedOperatorState(OperatorID operatorID) {
return prioritizedOperatorSubtaskState;
}
@Nonnull
@Override
public LocalRecoveryConfig createLocalRecoveryConfig() {
LocalRecoveryDirectoryProvider provider = new SavepointLocalRecoveryProvider();
return new LocalRecoveryConfig(false, provider);
}
@Override
public SequentialChannelStateReader getSequentialChannelStateReader() {
return SequentialChannelStateReader.NO_OP;
}
@Override
public void notifyCheckpointComplete(long checkpointId) {
throw new UnsupportedOperationException(MSG);
}
@Override
public void notifyCheckpointAborted(long checkpointId) {
throw new UnsupportedOperationException(MSG);
}
@Override
public void close() {}
}