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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.action.percolate;
import org.elasticsearch.ElasticsearchParseException;
import org.elasticsearch.action.ActionRequest;
import org.elasticsearch.action.ActionRequestValidationException;
import org.elasticsearch.action.CompositeIndicesRequest;
import org.elasticsearch.action.IndicesRequest;
import org.elasticsearch.action.get.GetRequest;
import org.elasticsearch.action.support.IndicesOptions;
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.XContent;
import org.elasticsearch.common.xcontent.XContentFactory;
import org.elasticsearch.common.xcontent.XContentParser;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import static org.elasticsearch.action.ValidateActions.addValidationError;
import static org.elasticsearch.common.xcontent.support.XContentMapValues.nodeStringArrayValue;
import static org.elasticsearch.common.xcontent.support.XContentMapValues.nodeStringValue;
/**
* A multi percolate request that encapsulates multiple {@link PercolateRequest} instances in a single api call.
*/
public class MultiPercolateRequest extends ActionRequest<MultiPercolateRequest> implements CompositeIndicesRequest {
private String[] indices;
private String documentType;
private IndicesOptions indicesOptions = IndicesOptions.strictExpandOpenAndForbidClosed();
private List<PercolateRequest> requests = new ArrayList<>();
/**
* Embeds a percolate request to this multi percolate request
*/
public MultiPercolateRequest add(PercolateRequestBuilder requestBuilder) {
return add(requestBuilder.request());
}
/**
* Embeds a percolate request to this multi percolate request
*/
public MultiPercolateRequest add(PercolateRequest request) {
if (request.indices() == null && indices != null) {
request.indices(indices);
}
if (request.documentType() == null && documentType != null) {
request.documentType(documentType);
}
if (request.indicesOptions() == IndicesOptions.strictExpandOpenAndForbidClosed() && indicesOptions != IndicesOptions.strictExpandOpenAndForbidClosed()) {
request.indicesOptions(indicesOptions);
}
requests.add(request);
return this;
}
/**
* Embeds a percolate request which request body is defined as raw bytes to this multi percolate request
*/
public MultiPercolateRequest add(byte[] data, int from, int length) throws Exception {
return add(new BytesArray(data, from, length), true);
}
/**
* Embeds a percolate request which request body is defined as raw bytes to this multi percolate request
*/
public MultiPercolateRequest add(BytesReference data, boolean allowExplicitIndex) throws Exception {
XContent xContent = XContentFactory.xContent(data);
int from = 0;
int length = data.length();
byte marker = xContent.streamSeparator();
while (true) {
int nextMarker = findNextMarker(marker, from, data, length);
if (nextMarker == -1) {
break;
}
// support first line with \n
if (nextMarker == 0) {
from = nextMarker + 1;
continue;
}
PercolateRequest percolateRequest = new PercolateRequest();
if (indices != null) {
percolateRequest.indices(indices);
}
if (documentType != null) {
percolateRequest.documentType(documentType);
}
if (indicesOptions != IndicesOptions.strictExpandOpenAndForbidClosed()) {
percolateRequest.indicesOptions(indicesOptions);
}
// now parse the action
if (nextMarker - from > 0) {
try (XContentParser parser = xContent.createParser(data.slice(from, nextMarker - from))) {
// Move to START_OBJECT, if token is null, its an empty data
XContentParser.Token token = parser.nextToken();
if (token != null) {
// Top level json object
assert token == XContentParser.Token.START_OBJECT;
token = parser.nextToken();
if (token != XContentParser.Token.FIELD_NAME) {
throw new ElasticsearchParseException("Expected field");
}
token = parser.nextToken();
if (token != XContentParser.Token.START_OBJECT) {
throw new ElasticsearchParseException("expected start object");
}
String percolateAction = parser.currentName();
if ("percolate".equals(percolateAction)) {
parsePercolateAction(parser, percolateRequest, allowExplicitIndex);
} else if ("count".equals(percolateAction)) {
percolateRequest.onlyCount(true);
parsePercolateAction(parser, percolateRequest, allowExplicitIndex);
} else {
throw new ElasticsearchParseException("[{}] isn't a supported percolate operation", percolateAction);
}
}
}
}
// move pointers
from = nextMarker + 1;
// now for the body
nextMarker = findNextMarker(marker, from, data, length);
if (nextMarker == -1) {
break;
}
percolateRequest.source(data.slice(from, nextMarker - from));
// move pointers
from = nextMarker + 1;
add(percolateRequest);
}
return this;
}
@Override
public List<? extends IndicesRequest> subRequests() {
List<IndicesRequest> indicesRequests = new ArrayList<>();
for (PercolateRequest percolateRequest : this.requests) {
indicesRequests.addAll(percolateRequest.subRequests());
}
return indicesRequests;
}
private void parsePercolateAction(XContentParser parser, PercolateRequest percolateRequest, boolean allowExplicitIndex) throws IOException {
String globalIndex = indices != null && indices.length > 0 ? indices[0] : null;
Map<String, Object> header = parser.map();
if (header.containsKey("id")) {
GetRequest getRequest = new GetRequest(globalIndex);
percolateRequest.getRequest(getRequest);
for (Map.Entry<String, Object> entry : header.entrySet()) {
Object value = entry.getValue();
if ("id".equals(entry.getKey())) {
getRequest.id(nodeStringValue(value, null));
header.put("id", entry.getValue());
} else if ("index".equals(entry.getKey()) || "indices".equals(entry.getKey())) {
if (!allowExplicitIndex) {
throw new IllegalArgumentException("explicit index in multi percolate is not allowed");
}
getRequest.index(nodeStringValue(value, null));
} else if ("type".equals(entry.getKey())) {
getRequest.type(nodeStringValue(value, null));
} else if ("preference".equals(entry.getKey())) {
getRequest.preference(nodeStringValue(value, null));
} else if ("routing".equals(entry.getKey())) {
getRequest.routing(nodeStringValue(value, null));
} else if ("percolate_index".equals(entry.getKey()) || "percolate_indices".equals(entry.getKey()) || "percolateIndex".equals(entry.getKey()) || "percolateIndices".equals(entry.getKey())) {
percolateRequest.indices(nodeStringArrayValue(value));
} else if ("percolate_type".equals(entry.getKey()) || "percolateType".equals(entry.getKey())) {
percolateRequest.documentType(nodeStringValue(value, null));
} else if ("percolate_preference".equals(entry.getKey()) || "percolatePreference".equals(entry.getKey())) {
percolateRequest.preference(nodeStringValue(value, null));
} else if ("percolate_routing".equals(entry.getKey()) || "percolateRouting".equals(entry.getKey())) {
percolateRequest.routing(nodeStringValue(value, null));
}
}
// Setting values based on get request, if needed...
if ((percolateRequest.indices() == null || percolateRequest.indices().length == 0) && getRequest.index() != null) {
percolateRequest.indices(getRequest.index());
}
if (percolateRequest.documentType() == null && getRequest.type() != null) {
percolateRequest.documentType(getRequest.type());
}
if (percolateRequest.routing() == null && getRequest.routing() != null) {
percolateRequest.routing(getRequest.routing());
}
if (percolateRequest.preference() == null && getRequest.preference() != null) {
percolateRequest.preference(getRequest.preference());
}
} else {
for (Map.Entry<String, Object> entry : header.entrySet()) {
Object value = entry.getValue();
if ("index".equals(entry.getKey()) || "indices".equals(entry.getKey())) {
if (!allowExplicitIndex) {
throw new IllegalArgumentException("explicit index in multi percolate is not allowed");
}
percolateRequest.indices(nodeStringArrayValue(value));
} else if ("type".equals(entry.getKey())) {
percolateRequest.documentType(nodeStringValue(value, null));
} else if ("preference".equals(entry.getKey())) {
percolateRequest.preference(nodeStringValue(value, null));
} else if ("routing".equals(entry.getKey())) {
percolateRequest.routing(nodeStringValue(value, null));
}
}
}
percolateRequest.indicesOptions(IndicesOptions.fromMap(header, indicesOptions));
}
private int findNextMarker(byte marker, int from, BytesReference data, int length) {
for (int i = from; i < length; i++) {
if (data.get(i) == marker) {
return i;
}
}
return -1;
}
/**
* @return The list of already set percolate requests.
*/
public List<PercolateRequest> requests() {
return this.requests;
}
/**
* @return Returns the {@link IndicesOptions} that is used as default for all percolate requests.
*/
public IndicesOptions indicesOptions() {
return indicesOptions;
}
/**
* Sets the {@link IndicesOptions} for all percolate request that don't have this set.
*
* Warning: This should be set before adding any percolate requests. Setting this after adding percolate requests
* will have no effect on any percolate requests already added.
*/
public MultiPercolateRequest indicesOptions(IndicesOptions indicesOptions) {
this.indicesOptions = indicesOptions;
return this;
}
/**
* @return The default indices for all percolate request.
*/
public String[] indices() {
return indices;
}
/**
* Sets the default indices for any percolate request that doesn't have indices defined.
*
* Warning: This should be set before adding any percolate requests. Setting this after adding percolate requests
* will have no effect on any percolate requests already added.
*/
public MultiPercolateRequest indices(String... indices) {
this.indices = indices;
return this;
}
/**
* @return Sets the default type for all percolate requests
*/
public String documentType() {
return documentType;
}
/**
* Sets the default document type for any percolate request that doesn't have a document type set.
*
* Warning: This should be set before adding any percolate requests. Setting this after adding percolate requests
* will have no effect on any percolate requests already added.
*/
public MultiPercolateRequest documentType(String type) {
this.documentType = type;
return this;
}
@Override
public ActionRequestValidationException validate() {
ActionRequestValidationException validationException = null;
if (requests.isEmpty()) {
validationException = addValidationError("no requests added", validationException);
}
for (int i = 0; i < requests.size(); i++) {
ActionRequestValidationException ex = requests.get(i).validate();
if (ex != null) {
if (validationException == null) {
validationException = new ActionRequestValidationException();
}
validationException.addValidationErrors(ex.validationErrors());
}
}
return validationException;
}
@Override
public void readFrom(StreamInput in) throws IOException {
super.readFrom(in);
indices = in.readStringArray();
documentType = in.readOptionalString();
indicesOptions = IndicesOptions.readIndicesOptions(in);
int size = in.readVInt();
for (int i = 0; i < size; i++) {
PercolateRequest request = new PercolateRequest();
request.readFrom(in);
requests.add(request);
}
}
@Override
public void writeTo(StreamOutput out) throws IOException {
super.writeTo(out);
out.writeStringArrayNullable(indices);
out.writeOptionalString(documentType);
indicesOptions.writeIndicesOptions(out);
out.writeVInt(requests.size());
for (PercolateRequest request : requests) {
request.writeTo(out);
}
}
}