com.hazelcast.jet.impl.pipeline.SinkImpl Maven / Gradle / Ivy
/*
* Copyright (c) 2008-2021, Hazelcast, Inc. All Rights Reserved.
*
* Licensed 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 com.hazelcast.jet.impl.pipeline;
import com.hazelcast.function.FunctionEx;
import com.hazelcast.jet.core.ProcessorMetaSupplier;
import com.hazelcast.jet.pipeline.Sink;
import javax.annotation.Nonnull;
import javax.annotation.Nullable;
public class SinkImpl implements Sink {
private static final long serialVersionUID = 1L;
private final String name;
private final ProcessorMetaSupplier metaSupplier;
private boolean assignedToStage;
private final Type type;
private final FunctionEx partitionKeyFunction;
public SinkImpl(
@Nonnull String name,
@Nonnull ProcessorMetaSupplier metaSupplier
) {
this(name, metaSupplier, Type.DEFAULT, null);
}
public SinkImpl(
@Nonnull String name,
@Nonnull ProcessorMetaSupplier metaSupplier,
@Nullable FunctionEx partitionKeyFn
) {
this(name, metaSupplier, Type.PARTITIONED, partitionKeyFn);
}
public SinkImpl(
@Nonnull String name,
@Nonnull ProcessorMetaSupplier metaSupplier,
@Nonnull Type type
) {
this(name, metaSupplier, type, null);
}
public SinkImpl(
@Nonnull String name,
@Nonnull ProcessorMetaSupplier metaSupplier,
@Nonnull Type type,
@Nullable FunctionEx partitionKeyFn
) {
if (type.isPartitioned() && partitionKeyFn == null) {
throw new IllegalArgumentException("Partitioned type " + type + " needs a partition key function");
}
if (!type.isPartitioned() && partitionKeyFn != null) {
throw new IllegalArgumentException("Non partitioned type " + type + " can't have a partition key function");
}
this.name = name;
this.metaSupplier = metaSupplier;
this.type = type;
this.partitionKeyFunction = partitionKeyFn;
}
@Nonnull
public ProcessorMetaSupplier metaSupplier() {
return metaSupplier;
}
@Override
public String name() {
return name;
}
public Type getType() {
return type;
}
public FunctionEx partitionKeyFunction() {
return partitionKeyFunction;
}
void onAssignToStage() {
if (assignedToStage) {
throw new IllegalStateException("Sink " + name + " was already assigned to a sink stage");
}
assignedToStage = true;
}
public enum Type {
DEFAULT(false, false),
PARTITIONED(true, false),
DISTRIBUTED_PARTITIONED(true, true),
TOTAL_PARALLELISM_ONE(false, true);
boolean partitioned;
boolean distributed;
Type(boolean partitioned, boolean distributed) {
this.partitioned = partitioned;
this.distributed = distributed;
}
public boolean isPartitioned() {
return partitioned;
}
public boolean isDistributed() {
return distributed;
}
}
}