Package org.elasticsearch.action.index

Source Code of org.elasticsearch.action.index.IndexRequest

/*
* Licensed to Elastic Search and Shay Banon under one
* or more contributor license agreements.  See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. Elastic Search 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.action.index;

import org.apache.lucene.util.UnicodeUtil;
import org.elasticsearch.ElasticSearchException;
import org.elasticsearch.ElasticSearchGenerationException;
import org.elasticsearch.ElasticSearchIllegalArgumentException;
import org.elasticsearch.ElasticSearchParseException;
import org.elasticsearch.action.ActionRequestValidationException;
import org.elasticsearch.action.RoutingMissingException;
import org.elasticsearch.action.WriteConsistencyLevel;
import org.elasticsearch.action.support.replication.ReplicationType;
import org.elasticsearch.action.support.replication.ShardReplicationOperationRequest;
import org.elasticsearch.client.Requests;
import org.elasticsearch.cluster.metadata.MappingMetaData;
import org.elasticsearch.common.Nullable;
import org.elasticsearch.common.Required;
import org.elasticsearch.common.Unicode;
import org.elasticsearch.common.io.stream.StreamInput;
import org.elasticsearch.common.io.stream.StreamOutput;
import org.elasticsearch.common.unit.TimeValue;
import org.elasticsearch.common.xcontent.XContentBuilder;
import org.elasticsearch.common.xcontent.XContentFactory;
import org.elasticsearch.common.xcontent.XContentParser;
import org.elasticsearch.common.xcontent.XContentType;
import org.elasticsearch.index.VersionType;

import java.io.IOException;
import java.util.Arrays;
import java.util.Map;

import static org.elasticsearch.action.Actions.*;

/**
* Index request to index a typed JSON document into a specific index and make it searchable. Best
* created using {@link org.elasticsearch.client.Requests#indexRequest(String)}.
*
* <p>The index requires the {@link #index()}, {@link #type(String)}, {@link #id(String)} and
* {@link #source(byte[])} to be set.
*
* <p>The source (content to index) can be set in its bytes form using ({@link #source(byte[])}),
* its string form ({@link #source(String)}) or using a {@link org.elasticsearch.common.xcontent.XContentBuilder}
* ({@link #source(org.elasticsearch.common.xcontent.XContentBuilder)}).
*
* <p>If the {@link #id(String)} is not set, it will be automatically generated.
*
* @author kimchy (shay.banon)
* @see IndexResponse
* @see org.elasticsearch.client.Requests#indexRequest(String)
* @see org.elasticsearch.client.Client#index(IndexRequest)
*/
public class IndexRequest extends ShardReplicationOperationRequest {

    /**
     * Operation type controls if the type of the index operation.
     */
    public static enum OpType {
        /**
         * Index the source. If there an existing document with the id, it will
         * be replaced.
         */
        INDEX((byte) 0),
        /**
         * Creates the resource. Simply adds it to the index, if there is an existing
         * document with the id, then it won't be removed.
         */
        CREATE((byte) 1);

        private byte id;

        OpType(byte id) {
            this.id = id;
        }

        /**
         * The internal representation of the operation type.
         */
        public byte id() {
            return id;
        }

        /**
         * Constructs the operation type from its internal representation.
         */
        public static OpType fromId(byte id) {
            if (id == 0) {
                return INDEX;
            } else if (id == 1) {
                return CREATE;
            } else {
                throw new ElasticSearchIllegalArgumentException("No type match for [" + id + "]");
            }
        }
    }

    private String type;
    private String id;
    @Nullable private String routing;
    @Nullable private String parent;

    private byte[] source;
    private int sourceOffset;
    private int sourceLength;
    private boolean sourceUnsafe;
    private boolean sourceFromBuilder;

    private OpType opType = OpType.INDEX;

    private boolean refresh = false;
    private long version = 0;
    private VersionType versionType = VersionType.INTERNAL;
    private String percolate;

    private XContentType contentType = Requests.INDEX_CONTENT_TYPE;

    public IndexRequest() {
    }

    /**
     * Constructs a new index request against the specific index. The {@link #type(String)},
     * {@link #id(String)} and {@link #source(byte[])} must be set.
     */
    public IndexRequest(String index) {
        this.index = index;
    }

    /**
     * Constructs a new index request against the index, type, id and using the source.
     *
     * @param index The index to index into
     * @param type  The type to index into
     * @param id    The id of document
     */
    public IndexRequest(String index, String type, String id) {
        this.index = index;
        this.type = type;
        this.id = id;
    }

    @Override public ActionRequestValidationException validate() {
        ActionRequestValidationException validationException = super.validate();
        if (type == null) {
            validationException = addValidationError("type is missing", validationException);
        }
        if (source == null) {
            validationException = addValidationError("source is missing", validationException);
        }
        return validationException;
    }

    /**
     * Before we fork on a local thread, make sure we copy over the bytes if they are unsafe
     */
    @Override public void beforeLocalFork() {
        source();
    }

    /**
     * Need this in case builders are used, we need to copy after adding...
     */
    public boolean sourceFromBuilder() {
        return sourceFromBuilder;
    }

    /**
     * Sets the index the index operation will happen on.
     */
    @Override public IndexRequest index(String index) {
        super.index(index);
        return this;
    }

    /**
     * Sets the content type that will be used when generating a document from user provided objects (like Map).
     */
    public IndexRequest contentType(XContentType contentType) {
        this.contentType = contentType;
        return this;
    }

    /**
     * Should the listener be called on a separate thread if needed.
     */
    @Override public IndexRequest listenerThreaded(boolean threadedListener) {
        super.listenerThreaded(threadedListener);
        return this;
    }

    /**
     * Controls if the operation will be executed on a separate thread when executed locally. Defaults
     * to <tt>true</tt> when running in embedded mode.
     */
    @Override public IndexRequest operationThreaded(boolean threadedOperation) {
        super.operationThreaded(threadedOperation);
        return this;
    }

    /**
     * The type of the indexed document.
     */
    public String type() {
        return type;
    }

    /**
     * Sets the type of the indexed document.
     */
    @Required public IndexRequest type(String type) {
        this.type = type;
        return this;
    }

    /**
     * The id of the indexed document. If not set, will be automatically generated.
     */
    public String id() {
        return id;
    }

    /**
     * Sets the id of the indexed document. If not set, will be automatically generated.
     */
    public IndexRequest id(String id) {
        this.id = id;
        return this;
    }

    /**
     * Controls the shard routing of the request. Using this value to hash the shard
     * and not the id.
     */
    public IndexRequest routing(String routing) {
        this.routing = routing;
        return this;
    }

    /**
     * Controls the shard routing of the request. Using this value to hash the shard
     * and not the id.
     */
    public String routing() {
        return this.routing;
    }

    /**
     * Sets the parent id of this document. If routing is not set, automatically set it as the
     * routing as well.
     */
    public IndexRequest parent(String parent) {
        this.parent = parent;
        if (routing == null) {
            routing = parent;
        }
        return this;
    }

    public String parent() {
        return this.parent;
    }

    /**
     * The source of the document to index, recopied to a new array if it has an offset or unsafe.
     */
    public byte[] source() {
        if (sourceUnsafe || sourceOffset > 0) {
            source = Arrays.copyOfRange(source, sourceOffset, sourceOffset + sourceLength);
            sourceOffset = 0;
            sourceUnsafe = false;
        }
        return source;
    }

    public byte[] unsafeSource() {
        return this.source;
    }

    public int unsafeSourceOffset() {
        return this.sourceOffset;
    }

    public int unsafeSourceLength() {
        return this.sourceLength;
    }

    /**
     * Index the Map as a {@link org.elasticsearch.client.Requests#INDEX_CONTENT_TYPE}.
     *
     * @param source The map to index
     */
    @Required public IndexRequest source(Map source) throws ElasticSearchGenerationException {
        return source(source, contentType);
    }

    /**
     * Index the Map as the provided content type.
     *
     * @param source The map to index
     */
    @Required public IndexRequest source(Map source, XContentType contentType) throws ElasticSearchGenerationException {
        try {
            XContentBuilder builder = XContentFactory.contentBuilder(contentType);
            builder.map(source);
            return source(builder);
        } catch (IOException e) {
            throw new ElasticSearchGenerationException("Failed to generate [" + source + "]", e);
        }
    }

    /**
     * Sets the document source to index.
     *
     * <p>Note, its preferable to either set it using {@link #source(org.elasticsearch.common.xcontent.XContentBuilder)}
     * or using the {@link #source(byte[])}.
     */
    @Required public IndexRequest source(String source) {
        UnicodeUtil.UTF8Result result = Unicode.fromStringAsUtf8(source);
        this.source = result.result;
        this.sourceOffset = 0;
        this.sourceLength = result.length;
        this.sourceUnsafe = true;
        return this;
    }

    /**
     * Sets the content source to index.
     */
    @Required public IndexRequest source(XContentBuilder sourceBuilder) {
        try {
            source = sourceBuilder.unsafeBytes();
            sourceOffset = 0;
            sourceLength = sourceBuilder.unsafeBytesLength();
            sourceUnsafe = true;
            this.sourceFromBuilder = true;
        } catch (IOException e) {
            throw new ElasticSearchGenerationException("Failed to generate [" + sourceBuilder + "]", e);
        }
        return this;
    }

    @Required public IndexRequest source(String field1, Object value1) {
        try {
            XContentBuilder builder = XContentFactory.contentBuilder(contentType);
            builder.startObject().field(field1, value1).endObject();
            return source(builder);
        } catch (IOException e) {
            throw new ElasticSearchGenerationException("Failed to generate", e);
        }
    }

    @Required public IndexRequest source(String field1, Object value1, String field2, Object value2) {
        try {
            XContentBuilder builder = XContentFactory.contentBuilder(contentType);
            builder.startObject().field(field1, value1).field(field2, value2).endObject();
            return source(builder);
        } catch (IOException e) {
            throw new ElasticSearchGenerationException("Failed to generate", e);
        }
    }

    @Required public IndexRequest source(String field1, Object value1, String field2, Object value2, String field3, Object value3) {
        try {
            XContentBuilder builder = XContentFactory.contentBuilder(contentType);
            builder.startObject().field(field1, value1).field(field2, value2).field(field3, value3).endObject();
            return source(builder);
        } catch (IOException e) {
            throw new ElasticSearchGenerationException("Failed to generate", e);
        }
    }

    @Required public IndexRequest source(String field1, Object value1, String field2, Object value2, String field3, Object value3, String field4, Object value4) {
        try {
            XContentBuilder builder = XContentFactory.contentBuilder(contentType);
            builder.startObject().field(field1, value1).field(field2, value2).field(field3, value3).field(field4, value4).endObject();
            return source(builder);
        } catch (IOException e) {
            throw new ElasticSearchGenerationException("Failed to generate", e);
        }
    }

    /**
     * Sets the document to index in bytes form.
     */
    public IndexRequest source(byte[] source) {
        return source(source, 0, source.length);
    }

    /**
     * Sets the document to index in bytes form (assumed to be safe to be used from different
     * threads).
     *
     * @param source The source to index
     * @param offset The offset in the byte array
     * @param length The length of the data
     */
    @Required public IndexRequest source(byte[] source, int offset, int length) {
        return source(source, offset, length, false);
    }

    /**
     * Sets the document to index in bytes form.
     *
     * @param source The source to index
     * @param offset The offset in the byte array
     * @param length The length of the data
     * @param unsafe Is the byte array safe to be used form a different thread
     */
    @Required public IndexRequest source(byte[] source, int offset, int length, boolean unsafe) {
        this.source = source;
        this.sourceOffset = offset;
        this.sourceLength = length;
        this.sourceUnsafe = unsafe;
        return this;
    }

    /**
     * A timeout to wait if the index operation can't be performed immediately. Defaults to <tt>1m</tt>.
     */
    public IndexRequest timeout(TimeValue timeout) {
        this.timeout = timeout;
        return this;
    }

    /**
     * A timeout to wait if the index operation can't be performed immediately. Defaults to <tt>1m</tt>.
     */
    public IndexRequest timeout(String timeout) {
        return timeout(TimeValue.parseTimeValue(timeout, null));
    }

    /**
     * Sets the type of operation to perform.
     */
    public IndexRequest opType(OpType opType) {
        this.opType = opType;
        return this;
    }

    /**
     * Sets a string representation of the {@link #opType(org.elasticsearch.action.index.IndexRequest.OpType)}. Can
     * be either "index" or "create".
     */
    public IndexRequest opType(String opType) throws ElasticSearchIllegalArgumentException {
        if ("create".equals(opType)) {
            return opType(OpType.CREATE);
        } else if ("index".equals(opType)) {
            return opType(OpType.INDEX);
        } else {
            throw new ElasticSearchIllegalArgumentException("No index opType matching [" + opType + "]");
        }
    }

    /**
     * Set the replication type for this operation.
     */
    @Override public IndexRequest replicationType(ReplicationType replicationType) {
        super.replicationType(replicationType);
        return this;
    }

    /**
     * Sets the consistency level of write. Defaults to {@link org.elasticsearch.action.WriteConsistencyLevel#DEFAULT}
     */
    @Override public IndexRequest consistencyLevel(WriteConsistencyLevel consistencyLevel) {
        super.consistencyLevel(consistencyLevel);
        return this;
    }

    /**
     * Set the replication type for this operation.
     */
    public IndexRequest replicationType(String replicationType) {
        super.replicationType(ReplicationType.fromString(replicationType));
        return this;
    }

    /**
     * Set to <tt>true</tt> to force this index to use {@link OpType#CREATE}.
     */
    public IndexRequest create(boolean create) {
        if (create) {
            return opType(OpType.CREATE);
        } else {
            return opType(OpType.INDEX);
        }
    }

    /**
     * The type of operation to perform.
     */
    public OpType opType() {
        return this.opType;
    }

    /**
     * Should a refresh be executed post this index operation causing the operation to
     * be searchable. Note, heavy indexing should not set this to <tt>true</tt>. Defaults
     * to <tt>false</tt>.
     */
    public IndexRequest refresh(boolean refresh) {
        this.refresh = refresh;
        return this;
    }

    public boolean refresh() {
        return this.refresh;
    }

    /**
     * Sets the version, which will cause the index operation to only be performed if a matching
     * version exists and no changes happened on the doc since then.
     */
    public IndexRequest version(long version) {
        this.version = version;
        return this;
    }

    public long version() {
        return this.version;
    }

    /**
     * Sets the versioning type. Defaults to {@link VersionType#INTERNAL}.
     */
    public IndexRequest versionType(VersionType versionType) {
        this.versionType = versionType;
        return this;
    }

    public VersionType versionType() {
        return this.versionType;
    }

    /**
     * Causes the index request document to be percolated. The parameter is the percolate query
     * to use to reduce the percolated queries that are going to run against this doc. Can be
     * set to <tt>*</tt> to indicate that all percolate queries should be run.
     */
    public IndexRequest percolate(String percolate) {
        this.percolate = percolate;
        return this;
    }

    public String percolate() {
        return this.percolate;
    }

    public void processRouting(MappingMetaData mappingMd) throws ElasticSearchException {
        if (routing == null && mappingMd.routing().hasPath()) {
            XContentParser parser = null;
            try {
                parser = XContentFactory.xContent(source, sourceOffset, sourceLength)
                        .createParser(source, sourceOffset, sourceLength);
                routing = mappingMd.parseRouting(parser);
            } catch (Exception e) {
                throw new ElasticSearchParseException("failed to parse doc to extract routing", e);
            } finally {
                if (parser != null) {
                    parser.close();
                }
            }
        }
        // might as well check for routing here
        if (mappingMd.routing().required() && routing == null) {
            throw new RoutingMissingException(index, type, id);
        }
    }

    @Override public void readFrom(StreamInput in) throws IOException {
        super.readFrom(in);
        type = in.readUTF();
        if (in.readBoolean()) {
            id = in.readUTF();
        }
        if (in.readBoolean()) {
            routing = in.readUTF();
        }
        if (in.readBoolean()) {
            parent = in.readUTF();
        }

        sourceUnsafe = false;
        sourceOffset = 0;
        sourceLength = in.readVInt();
        source = new byte[sourceLength];
        in.readFully(source);

        opType = OpType.fromId(in.readByte());
        refresh = in.readBoolean();
        version = in.readLong();
        if (in.readBoolean()) {
            percolate = in.readUTF();
        }
        versionType = VersionType.fromValue(in.readByte());
    }

    @Override public void writeTo(StreamOutput out) throws IOException {
        super.writeTo(out);
        out.writeUTF(type);
        if (id == null) {
            out.writeBoolean(false);
        } else {
            out.writeBoolean(true);
            out.writeUTF(id);
        }
        if (routing == null) {
            out.writeBoolean(false);
        } else {
            out.writeBoolean(true);
            out.writeUTF(routing);
        }
        if (parent == null) {
            out.writeBoolean(false);
        } else {
            out.writeBoolean(true);
            out.writeUTF(parent);
        }
        out.writeVInt(sourceLength);
        out.writeBytes(source, sourceOffset, sourceLength);
        out.writeByte(opType.id());
        out.writeBoolean(refresh);
        out.writeLong(version);
        if (percolate == null) {
            out.writeBoolean(false);
        } else {
            out.writeBoolean(true);
            out.writeUTF(percolate);
        }
        out.writeByte(versionType.getValue());
    }

    @Override public String toString() {
        String sSource = "_na_";
        try {
            sSource = Unicode.fromBytes(source, sourceOffset, sourceLength);
        } catch (Exception e) {
            // ignore
        }
        return "index {[" + index + "][" + type + "][" + id + "], source[" + sSource + "]}";
    }
}
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