org.elasticsearch.search.warmer.IndexWarmersMetaData Maven / Gradle / Ivy
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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.search.warmer;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.Lists;
import org.elasticsearch.cluster.metadata.IndexMetaData;
import org.elasticsearch.common.Nullable;
import org.elasticsearch.common.Strings;
import org.elasticsearch.common.bytes.BytesArray;
import org.elasticsearch.common.bytes.BytesReference;
import org.elasticsearch.common.io.stream.StreamInput;
import org.elasticsearch.common.io.stream.StreamOutput;
import org.elasticsearch.common.xcontent.*;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
/**
*/
public class IndexWarmersMetaData implements IndexMetaData.Custom {
public static final String TYPE = "warmers";
public static final Factory FACTORY = new Factory();
public static class Entry {
private final String name;
private final String[] types;
private final BytesReference source;
public Entry(String name, String[] types, BytesReference source) {
this.name = name;
this.types = types == null ? Strings.EMPTY_ARRAY : types;
this.source = source;
}
public String name() {
return this.name;
}
public String[] types() {
return this.types;
}
@Nullable
public BytesReference source() {
return this.source;
}
}
private final ImmutableList entries;
public IndexWarmersMetaData(Entry... entries) {
this.entries = ImmutableList.copyOf(entries);
}
public ImmutableList entries() {
return this.entries;
}
@Override
public String type() {
return TYPE;
}
public static class Factory implements IndexMetaData.Custom.Factory {
@Override
public String type() {
return TYPE;
}
@Override
public IndexWarmersMetaData readFrom(StreamInput in) throws IOException {
Entry[] entries = new Entry[in.readVInt()];
for (int i = 0; i < entries.length; i++) {
entries[i] = new Entry(in.readString(), in.readStringArray(), in.readBoolean() ? in.readBytesReference() : null);
}
return new IndexWarmersMetaData(entries);
}
@Override
public void writeTo(IndexWarmersMetaData warmers, StreamOutput out) throws IOException {
out.writeVInt(warmers.entries().size());
for (Entry entry : warmers.entries()) {
out.writeString(entry.name());
out.writeStringArray(entry.types());
if (entry.source() == null) {
out.writeBoolean(false);
} else {
out.writeBoolean(true);
out.writeBytesReference(entry.source());
}
}
}
@Override
public IndexWarmersMetaData fromMap(Map map) throws IOException {
// if it starts with the type, remove it
if (map.size() == 1 && map.containsKey(TYPE)) {
map = (Map) map.values().iterator().next();
}
XContentBuilder builder = XContentFactory.smileBuilder().map(map);
try (XContentParser parser = XContentFactory.xContent(XContentType.SMILE).createParser(builder.bytes())) {
// move to START_OBJECT
parser.nextToken();
return fromXContent(parser);
}
}
@Override
public IndexWarmersMetaData fromXContent(XContentParser parser) throws IOException {
// we get here after we are at warmers token
String currentFieldName = null;
XContentParser.Token token;
List entries = new ArrayList<>();
while ((token = parser.nextToken()) != XContentParser.Token.END_OBJECT) {
if (token == XContentParser.Token.FIELD_NAME) {
currentFieldName = parser.currentName();
} else if (token == XContentParser.Token.START_OBJECT) {
String name = currentFieldName;
List types = new ArrayList<>(2);
BytesReference source = null;
while ((token = parser.nextToken()) != XContentParser.Token.END_OBJECT) {
if (token == XContentParser.Token.FIELD_NAME) {
currentFieldName = parser.currentName();
} else if (token == XContentParser.Token.START_ARRAY) {
if ("types".equals(currentFieldName)) {
while ((token = parser.nextToken()) != XContentParser.Token.END_ARRAY) {
types.add(parser.text());
}
}
} else if (token == XContentParser.Token.START_OBJECT) {
if ("source".equals(currentFieldName)) {
XContentBuilder builder = XContentFactory.jsonBuilder().map(parser.mapOrdered());
source = builder.bytes();
}
} else if (token == XContentParser.Token.VALUE_EMBEDDED_OBJECT) {
if ("source".equals(currentFieldName)) {
source = new BytesArray(parser.binaryValue());
}
}
}
entries.add(new Entry(name, types.size() == 0 ? Strings.EMPTY_ARRAY : types.toArray(new String[types.size()]), source));
}
}
return new IndexWarmersMetaData(entries.toArray(new Entry[entries.size()]));
}
@Override
public void toXContent(IndexWarmersMetaData warmers, XContentBuilder builder, ToXContent.Params params) throws IOException {
//No need, IndexMetaData already writes it
//builder.startObject(TYPE, XContentBuilder.FieldCaseConversion.NONE);
for (Entry entry : warmers.entries()) {
toXContent(entry, builder, params);
}
//No need, IndexMetaData already writes it
//builder.endObject();
}
public void toXContent(Entry entry, XContentBuilder builder, ToXContent.Params params) throws IOException {
boolean binary = params.paramAsBoolean("binary", false);
builder.startObject(entry.name(), XContentBuilder.FieldCaseConversion.NONE);
builder.field("types", entry.types());
builder.field("source");
if (binary) {
builder.value(entry.source());
} else {
Map mapping = XContentFactory.xContent(entry.source()).createParser(entry.source()).mapOrderedAndClose();
builder.map(mapping);
}
builder.endObject();
}
@Override
public IndexWarmersMetaData merge(IndexWarmersMetaData first, IndexWarmersMetaData second) {
List entries = Lists.newArrayList();
entries.addAll(first.entries());
for (Entry secondEntry : second.entries()) {
boolean found = false;
for (Entry firstEntry : first.entries()) {
if (firstEntry.name().equals(secondEntry.name())) {
found = true;
break;
}
}
if (!found) {
entries.add(secondEntry);
}
}
return new IndexWarmersMetaData(entries.toArray(new Entry[entries.size()]));
}
}
}