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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.common.ParseField;
import org.elasticsearch.common.bytes.BytesReference;
import org.elasticsearch.common.io.stream.StreamInput;
import org.elasticsearch.common.io.stream.StreamOutput;
import org.elasticsearch.common.io.stream.Writeable;
import org.elasticsearch.common.xcontent.ObjectParser;
import org.elasticsearch.common.xcontent.ToXContent;
import org.elasticsearch.common.xcontent.XContentBuilder;
import org.elasticsearch.common.xcontent.XContentHelper;
import org.elasticsearch.common.xcontent.XContentParser;
import java.io.IOException;
import java.util.Map;
import java.util.function.BiFunction;
/**
* Encapsulates a pipeline's id and configuration as a blob
*/
public final class PipelineConfiguration implements Writeable<PipelineConfiguration>, ToXContent {
private final static PipelineConfiguration PROTOTYPE = new PipelineConfiguration(null, null);
public static PipelineConfiguration readPipelineConfiguration(StreamInput in) throws IOException {
return PROTOTYPE.readFrom(in);
}
private final static ObjectParser<Builder, Void> PARSER = new ObjectParser<>("pipeline_config", Builder::new);
static {
PARSER.declareString(Builder::setId, new ParseField("id"));
PARSER.declareField((parser, builder, aVoid) -> {
XContentBuilder contentBuilder = XContentBuilder.builder(parser.contentType().xContent());
XContentHelper.copyCurrentStructure(contentBuilder.generator(), parser);
builder.setConfig(contentBuilder.bytes());
}, new ParseField("config"), ObjectParser.ValueType.OBJECT);
}
public static BiFunction<XContentParser, Void,PipelineConfiguration> getParser() {
return (p, c) -> PARSER.apply(p ,c).build();
}
private static class Builder {
private String id;
private BytesReference config;
void setId(String id) {
this.id = id;
}
void setConfig(BytesReference config) {
this.config = config;
}
PipelineConfiguration build() {
return new PipelineConfiguration(id, config);
}
}
private final String id;
// Store config as bytes reference, because the config is only used when the pipeline store reads the cluster state
// and the way the map of maps config is read requires a deep copy (it removes instead of gets entries to check for unused options)
// also the get pipeline api just directly returns this to the caller
private final BytesReference config;
public PipelineConfiguration(String id, BytesReference config) {
this.id = id;
this.config = config;
}
public String getId() {
return id;
}
public Map<String, Object> getConfigAsMap() {
return XContentHelper.convertToMap(config, true).v2();
}
@Override
public XContentBuilder toXContent(XContentBuilder builder, Params params) throws IOException {
builder.startObject();
builder.field("id", id);
builder.field("config", getConfigAsMap());
builder.endObject();
return builder;
}
@Override
public PipelineConfiguration readFrom(StreamInput in) throws IOException {
return new PipelineConfiguration(in.readString(), in.readBytesReference());
}
public void writeTo(StreamOutput out) throws IOException {
out.writeString(id);
out.writeBytesReference(config);
}
}
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