io.druid.segment.realtime.appenderator.Committed.java Source code

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Here is the source code for io.druid.segment.realtime.appenderator.Committed.java

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/*
 * Licensed to Metamarkets Group Inc. (Metamarkets) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. Metamarkets 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 io.druid.segment.realtime.appenderator;

import com.fasterxml.jackson.annotation.JsonCreator;
import com.fasterxml.jackson.annotation.JsonProperty;
import com.google.common.collect.ImmutableMap;
import com.google.common.collect.Maps;

import java.util.Map;
import java.util.Objects;

public class Committed {
    private static final Committed NIL = new Committed(ImmutableMap.<String, Integer>of(), null);

    // Map of segment identifierAsString -> number of committed hydrants
    private final ImmutableMap<String, Integer> hydrants;
    private final Object metadata;

    @JsonCreator
    public Committed(@JsonProperty("hydrants") Map<String, Integer> hydrants,
            @JsonProperty("metadata") Object metadata) {
        this.hydrants = ImmutableMap.copyOf(hydrants);
        this.metadata = metadata;
    }

    public static Committed create(Map<SegmentIdentifier, Integer> hydrants0, Object metadata) {
        final ImmutableMap.Builder<String, Integer> hydrants = ImmutableMap.builder();
        for (Map.Entry<SegmentIdentifier, Integer> entry : hydrants0.entrySet()) {
            hydrants.put(entry.getKey().getIdentifierAsString(), entry.getValue());
        }
        return new Committed(hydrants.build(), metadata);
    }

    @JsonProperty
    public ImmutableMap<String, Integer> getHydrants() {
        return hydrants;
    }

    @JsonProperty
    public Object getMetadata() {
        return metadata;
    }

    public int getCommittedHydrants(final String identifierAsString) {
        final Integer committedHydrant = hydrants.get(identifierAsString);
        return committedHydrant == null ? 0 : committedHydrant;
    }

    public Committed without(final String identifierAsString) {
        final Map<String, Integer> newHydrants = Maps.newHashMap();
        newHydrants.putAll(hydrants);
        newHydrants.remove(identifierAsString);
        return new Committed(newHydrants, metadata);
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) {
            return true;
        }
        if (o == null || getClass() != o.getClass()) {
            return false;
        }
        Committed committed = (Committed) o;
        return Objects.equals(hydrants, committed.hydrants) && Objects.equals(metadata, committed.metadata);
    }

    @Override
    public int hashCode() {
        return Objects.hash(hydrants, metadata);
    }

    @Override
    public String toString() {
        return "Committed{" + "hydrants=" + hydrants + ", metadata=" + metadata + '}';
    }

    public static Committed nil() {
        return NIL;
    }
}