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/*
* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch 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.elasticsearch.ingest;
import org.elasticsearch.cluster.AbstractDiffable;
import org.elasticsearch.cluster.metadata.MetaData;
import org.elasticsearch.common.ParseField;
import org.elasticsearch.common.io.stream.StreamInput;
import org.elasticsearch.common.io.stream.StreamOutput;
import org.elasticsearch.common.xcontent.ObjectParser;
import org.elasticsearch.common.xcontent.XContentBuilder;
import org.elasticsearch.common.xcontent.XContentParser;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.EnumSet;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
/**
* Holds the ingest pipelines that are available in the cluster
*/
public final class IngestMetadata extends AbstractDiffable<MetaData.Custom> implements MetaData.Custom {
public final static String TYPE = "ingest";
public final static IngestMetadata PROTO = new IngestMetadata();
private static final ParseField PIPELINES_FIELD = new ParseField("pipeline");
private static final ObjectParser<List<PipelineConfiguration>, Void> INGEST_METADATA_PARSER = new ObjectParser<>("ingest_metadata", ArrayList::new);
static {
INGEST_METADATA_PARSER.declareObjectArray(List::addAll , PipelineConfiguration.getParser(), PIPELINES_FIELD);
}
// We can't use Pipeline class directly in cluster state, because we don't have the processor factories around when
// IngestMetadata is registered as custom metadata.
private final Map<String, PipelineConfiguration> pipelines;
private IngestMetadata() {
this.pipelines = Collections.emptyMap();
}
public IngestMetadata(Map<String, PipelineConfiguration> pipelines) {
this.pipelines = Collections.unmodifiableMap(pipelines);
}
@Override
public String type() {
return TYPE;
}
public Map<String, PipelineConfiguration> getPipelines() {
return pipelines;
}
@Override
public MetaData.Custom readFrom(StreamInput in) throws IOException {
int size = in.readVInt();
Map<String, PipelineConfiguration> pipelines = new HashMap<>(size);
for (int i = 0; i < size; i++) {
PipelineConfiguration pipeline = PipelineConfiguration.readPipelineConfiguration(in);
pipelines.put(pipeline.getId(), pipeline);
}
return new IngestMetadata(pipelines);
}
@Override
public void writeTo(StreamOutput out) throws IOException {
out.writeVInt(pipelines.size());
for (PipelineConfiguration pipeline : pipelines.values()) {
pipeline.writeTo(out);
}
}
@Override
public MetaData.Custom fromXContent(XContentParser parser) throws IOException {
Map<String, PipelineConfiguration> pipelines = new HashMap<>();
List<PipelineConfiguration> configs = INGEST_METADATA_PARSER.parse(parser);
for (PipelineConfiguration pipeline : configs) {
pipelines.put(pipeline.getId(), pipeline);
}
return new IngestMetadata(pipelines);
}
@Override
public XContentBuilder toXContent(XContentBuilder builder, Params params) throws IOException {
builder.startArray(PIPELINES_FIELD.getPreferredName());
for (PipelineConfiguration pipeline : pipelines.values()) {
pipeline.toXContent(builder, params);
}
builder.endArray();
return builder;
}
@Override
public EnumSet<MetaData.XContentContext> context() {
return MetaData.API_AND_GATEWAY;
}
}
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