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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.bulk;
import org.elasticsearch.action.DocWriteRequest;
import org.elasticsearch.action.delete.DeleteRequest;
import org.elasticsearch.action.index.IndexRequest;
import org.elasticsearch.action.update.UpdateRequest;
import org.elasticsearch.common.Nullable;
import org.elasticsearch.common.ParseField;
import org.elasticsearch.common.bytes.BytesArray;
import org.elasticsearch.common.bytes.BytesReference;
import org.elasticsearch.common.logging.DeprecationLogger;
import org.elasticsearch.common.lucene.uid.Versions;
import org.elasticsearch.common.xcontent.LoggingDeprecationHandler;
import org.elasticsearch.common.xcontent.NamedXContentRegistry;
import org.elasticsearch.common.xcontent.XContent;
import org.elasticsearch.common.xcontent.XContentParser;
import org.elasticsearch.common.xcontent.XContentType;
import org.elasticsearch.index.VersionType;
import org.elasticsearch.index.seqno.SequenceNumbers;
import org.elasticsearch.rest.action.document.RestBulkAction;
import org.elasticsearch.search.fetch.subphase.FetchSourceContext;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
import java.util.function.Consumer;
import java.util.function.Function;
import static org.elasticsearch.index.seqno.SequenceNumbers.UNASSIGNED_PRIMARY_TERM;
/**
* Helper to parse bulk requests. This should be considered an internal class.
*/
public final class BulkRequestParser {
private static final DeprecationLogger deprecationLogger = DeprecationLogger.getLogger(BulkRequestParser.class);
private static final ParseField INDEX = new ParseField("_index");
private static final ParseField TYPE = new ParseField("_type");
private static final ParseField ID = new ParseField("_id");
private static final ParseField ROUTING = new ParseField("routing");
private static final ParseField OP_TYPE = new ParseField("op_type");
private static final ParseField VERSION = new ParseField("version");
private static final ParseField VERSION_TYPE = new ParseField("version_type");
private static final ParseField RETRY_ON_CONFLICT = new ParseField("retry_on_conflict");
private static final ParseField PIPELINE = new ParseField("pipeline");
private static final ParseField SOURCE = new ParseField("_source");
private static final ParseField IF_SEQ_NO = new ParseField("if_seq_no");
private static final ParseField IF_PRIMARY_TERM = new ParseField("if_primary_term");
private static final ParseField REQUIRE_ALIAS = new ParseField(DocWriteRequest.REQUIRE_ALIAS);
private final boolean warnOnTypeUsage;
/**
* Create a new parser.
* @param warnOnTypeUsage whether it warns upon types being explicitly specified
*/
public BulkRequestParser(boolean warnOnTypeUsage) {
this.warnOnTypeUsage = warnOnTypeUsage;
}
private static int findNextMarker(byte marker, int from, BytesReference data) {
final int res = data.indexOf(marker, from);
if (res != -1) {
assert res >= 0;
return res;
}
if (from != data.length()) {
throw new IllegalArgumentException("The bulk request must be terminated by a newline [\\n]");
}
return res;
}
/**
* Returns the sliced {@link BytesReference}. If the {@link XContentType} is JSON, the byte preceding the marker is checked to see
* if it is a carriage return and if so, the BytesReference is sliced so that the carriage return is ignored
*/
private static BytesReference sliceTrimmingCarriageReturn(BytesReference bytesReference, int from, int nextMarker,
XContentType xContentType) {
final int length;
if (XContentType.JSON == xContentType && bytesReference.get(nextMarker - 1) == (byte) '\r') {
length = nextMarker - from - 1;
} else {
length = nextMarker - from;
}
return bytesReference.slice(from, length);
}
/**
* Parse the provided {@code data} assuming the provided default values. Index requests
* will be passed to the {@code indexRequestConsumer}, update requests to the
* {@code updateRequestConsumer} and delete requests to the {@code deleteRequestConsumer}.
*/
public void parse(
BytesReference data, @Nullable String defaultIndex,
@Nullable String defaultRouting, @Nullable FetchSourceContext defaultFetchSourceContext,
@Nullable String defaultPipeline, @Nullable Boolean defaultRequireAlias, boolean allowExplicitIndex,
XContentType xContentType,
Consumer indexRequestConsumer,
Consumer updateRequestConsumer,
Consumer deleteRequestConsumer) throws IOException {
parse(data, defaultIndex, null, defaultRouting, defaultFetchSourceContext, defaultPipeline,
defaultRequireAlias, allowExplicitIndex, xContentType, indexRequestConsumer, updateRequestConsumer, deleteRequestConsumer);
}
/**
* Parse the provided {@code data} assuming the provided default values. Index requests
* will be passed to the {@code indexRequestConsumer}, update requests to the
* {@code updateRequestConsumer} and delete requests to the {@code deleteRequestConsumer}.
* @deprecated Use {@link #parse(BytesReference, String, String, FetchSourceContext, String, Boolean, boolean, XContentType,
* Consumer, Consumer, Consumer)} instead.
*/
@Deprecated
public void parse(
BytesReference data, @Nullable String defaultIndex, @Nullable String defaultType,
@Nullable String defaultRouting, @Nullable FetchSourceContext defaultFetchSourceContext,
@Nullable String defaultPipeline, @Nullable Boolean defaultRequireAlias, boolean allowExplicitIndex,
XContentType xContentType,
Consumer indexRequestConsumer,
Consumer updateRequestConsumer,
Consumer deleteRequestConsumer) throws IOException {
XContent xContent = xContentType.xContent();
int line = 0;
int from = 0;
byte marker = xContent.streamSeparator();
boolean typesDeprecationLogged = false;
// Bulk requests can contain a lot of repeated strings for the index, pipeline and routing parameters. This map is used to
// deduplicate duplicate strings parsed for these parameters. While it does not prevent instantiating the duplicate strings, it
// reduces their lifetime to the lifetime of this parse call instead of the lifetime of the full bulk request.
final Map stringDeduplicator = new HashMap<>();
while (true) {
int nextMarker = findNextMarker(marker, from, data);
if (nextMarker == -1) {
break;
}
line++;
// now parse the action
try (XContentParser parser = createParser(data, xContent, from, nextMarker)) {
// move pointers
from = nextMarker + 1;
// Move to START_OBJECT
XContentParser.Token token = parser.nextToken();
if (token == null) {
continue;
}
if (token != XContentParser.Token.START_OBJECT) {
throw new IllegalArgumentException("Malformed action/metadata line [" + line + "], expected "
+ XContentParser.Token.START_OBJECT + " but found [" + token + "]");
}
// Move to FIELD_NAME, that's the action
token = parser.nextToken();
if (token != XContentParser.Token.FIELD_NAME) {
throw new IllegalArgumentException("Malformed action/metadata line [" + line + "], expected "
+ XContentParser.Token.FIELD_NAME + " but found [" + token + "]");
}
String action = parser.currentName();
String index = defaultIndex;
String type = defaultType;
String id = null;
String routing = defaultRouting;
FetchSourceContext fetchSourceContext = defaultFetchSourceContext;
String opType = null;
long version = Versions.MATCH_ANY;
VersionType versionType = VersionType.INTERNAL;
long ifSeqNo = SequenceNumbers.UNASSIGNED_SEQ_NO;
long ifPrimaryTerm = UNASSIGNED_PRIMARY_TERM;
int retryOnConflict = 0;
String pipeline = defaultPipeline;
boolean requireAlias = defaultRequireAlias != null && defaultRequireAlias;
// at this stage, next token can either be END_OBJECT (and use default index and type, with auto generated id)
// or START_OBJECT which will have another set of parameters
token = parser.nextToken();
if (token == XContentParser.Token.START_OBJECT) {
String currentFieldName = null;
while ((token = parser.nextToken()) != XContentParser.Token.END_OBJECT) {
if (token == XContentParser.Token.FIELD_NAME) {
currentFieldName = parser.currentName();
} else if (token.isValue()) {
if (INDEX.match(currentFieldName, parser.getDeprecationHandler())) {
if (!allowExplicitIndex) {
throw new IllegalArgumentException("explicit index in bulk is not allowed");
}
index = stringDeduplicator.computeIfAbsent(parser.text(), Function.identity());
} else if (TYPE.match(currentFieldName, parser.getDeprecationHandler())) {
if (warnOnTypeUsage && typesDeprecationLogged == false) {
deprecationLogger.deprecate("bulk_with_types", RestBulkAction.TYPES_DEPRECATION_MESSAGE);
typesDeprecationLogged = true;
}
type = stringDeduplicator.computeIfAbsent(parser.text(), Function.identity());
} else if (ID.match(currentFieldName, parser.getDeprecationHandler())) {
id = parser.text();
} else if (ROUTING.match(currentFieldName, parser.getDeprecationHandler())) {
routing = stringDeduplicator.computeIfAbsent(parser.text(), Function.identity());
} else if (OP_TYPE.match(currentFieldName, parser.getDeprecationHandler())) {
opType = parser.text();
} else if (VERSION.match(currentFieldName, parser.getDeprecationHandler())) {
version = parser.longValue();
} else if (VERSION_TYPE.match(currentFieldName, parser.getDeprecationHandler())) {
versionType = VersionType.fromString(parser.text());
} else if (IF_SEQ_NO.match(currentFieldName, parser.getDeprecationHandler())) {
ifSeqNo = parser.longValue();
} else if (IF_PRIMARY_TERM.match(currentFieldName, parser.getDeprecationHandler())) {
ifPrimaryTerm = parser.longValue();
} else if (RETRY_ON_CONFLICT.match(currentFieldName, parser.getDeprecationHandler())) {
retryOnConflict = parser.intValue();
} else if (PIPELINE.match(currentFieldName, parser.getDeprecationHandler())) {
pipeline = stringDeduplicator.computeIfAbsent(parser.text(), Function.identity());
} else if (SOURCE.match(currentFieldName, parser.getDeprecationHandler())) {
fetchSourceContext = FetchSourceContext.fromXContent(parser);
} else if (REQUIRE_ALIAS.match(currentFieldName, parser.getDeprecationHandler())) {
requireAlias = parser.booleanValue();
} else {
throw new IllegalArgumentException("Action/metadata line [" + line + "] contains an unknown parameter ["
+ currentFieldName + "]");
}
} else if (token == XContentParser.Token.START_ARRAY) {
throw new IllegalArgumentException("Malformed action/metadata line [" + line +
"], expected a simple value for field [" + currentFieldName + "] but found [" + token + "]");
} else if (token == XContentParser.Token.START_OBJECT && SOURCE.match(currentFieldName,
parser.getDeprecationHandler())) {
fetchSourceContext = FetchSourceContext.fromXContent(parser);
} else if (token != XContentParser.Token.VALUE_NULL) {
throw new IllegalArgumentException("Malformed action/metadata line [" + line
+ "], expected a simple value for field [" + currentFieldName + "] but found [" + token + "]");
}
}
} else if (token != XContentParser.Token.END_OBJECT) {
throw new IllegalArgumentException("Malformed action/metadata line [" + line + "], expected "
+ XContentParser.Token.START_OBJECT + " or " + XContentParser.Token.END_OBJECT + " but found [" + token + "]");
}
if ("delete".equals(action)) {
deleteRequestConsumer.accept(new DeleteRequest(index, type, id).routing(routing)
.version(version).versionType(versionType).setIfSeqNo(ifSeqNo).setIfPrimaryTerm(ifPrimaryTerm));
} else {
nextMarker = findNextMarker(marker, from, data);
if (nextMarker == -1) {
break;
}
line++;
// we use internalAdd so we don't fork here, this allows us not to copy over the big byte array to small chunks
// of index request.
if ("index".equals(action)) {
if (opType == null) {
indexRequestConsumer.accept(new IndexRequest(index, type, id).routing(routing)
.version(version).versionType(versionType)
.setPipeline(pipeline).setIfSeqNo(ifSeqNo).setIfPrimaryTerm(ifPrimaryTerm)
.source(sliceTrimmingCarriageReturn(data, from, nextMarker,xContentType), xContentType)
.setRequireAlias(requireAlias));
} else {
indexRequestConsumer.accept(new IndexRequest(index, type, id).routing(routing)
.version(version).versionType(versionType)
.create("create".equals(opType)).setPipeline(pipeline)
.setIfSeqNo(ifSeqNo).setIfPrimaryTerm(ifPrimaryTerm)
.source(sliceTrimmingCarriageReturn(data, from, nextMarker, xContentType), xContentType)
.setRequireAlias(requireAlias));
}
} else if ("create".equals(action)) {
indexRequestConsumer.accept(new IndexRequest(index, type, id).routing(routing)
.version(version).versionType(versionType)
.create(true).setPipeline(pipeline).setIfSeqNo(ifSeqNo).setIfPrimaryTerm(ifPrimaryTerm)
.source(sliceTrimmingCarriageReturn(data, from, nextMarker, xContentType), xContentType)
.setRequireAlias(requireAlias));
} else if ("update".equals(action)) {
if (version != Versions.MATCH_ANY || versionType != VersionType.INTERNAL) {
throw new IllegalArgumentException("Update requests do not support versioning. " +
"Please use `if_seq_no` and `if_primary_term` instead");
}
UpdateRequest updateRequest = new UpdateRequest(index, type, id).routing(routing).retryOnConflict(retryOnConflict)
.setIfSeqNo(ifSeqNo).setIfPrimaryTerm(ifPrimaryTerm)
.setRequireAlias(requireAlias)
.routing(routing);
try (XContentParser sliceParser = createParser(
sliceTrimmingCarriageReturn(data, from, nextMarker, xContentType), xContent)) {
updateRequest.fromXContent(sliceParser);
}
if (fetchSourceContext != null) {
updateRequest.fetchSource(fetchSourceContext);
}
IndexRequest upsertRequest = updateRequest.upsertRequest();
if (upsertRequest != null) {
upsertRequest.setPipeline(defaultPipeline);
}
updateRequestConsumer.accept(updateRequest);
}
// move pointers
from = nextMarker + 1;
}
}
}
}
private static XContentParser createParser(BytesReference data, XContent xContent) throws IOException {
if (data instanceof BytesArray) {
return parseBytesArray(xContent, (BytesArray) data, 0, data.length());
} else {
return xContent.createParser(NamedXContentRegistry.EMPTY, LoggingDeprecationHandler.INSTANCE, data.streamInput());
}
}
// Create an efficient parser of the given bytes, trying to directly parse a byte array if possible and falling back to stream wrapping
// otherwise.
private static XContentParser createParser(BytesReference data, XContent xContent, int from, int nextMarker) throws IOException {
if (data instanceof BytesArray) {
return parseBytesArray(xContent, (BytesArray) data, from, nextMarker);
} else {
final int length = nextMarker - from;
final BytesReference slice = data.slice(from, length);
if (slice instanceof BytesArray) {
return parseBytesArray(xContent, (BytesArray) slice, 0, length);
} else {
// EMPTY is safe here because we never call namedObject
return xContent.createParser(NamedXContentRegistry.EMPTY, LoggingDeprecationHandler.INSTANCE, slice.streamInput());
}
}
}
private static XContentParser parseBytesArray(XContent xContent, BytesArray array, int from, int nextMarker) throws IOException {
final int offset = array.offset();
// EMPTY is safe here because we never call namedObject
return xContent.createParser(NamedXContentRegistry.EMPTY, LoggingDeprecationHandler.INSTANCE, array.array(),
offset + from, nextMarker - from);
}
}
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