com.mongodb.internal.connection.KillCursorsMessage Maven / Gradle / Ivy
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/*
* Copyright 2008-present MongoDB, Inc.
*
* Licensed 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 com.mongodb.internal.connection;
import org.bson.io.BsonOutput;
import java.util.List;
import static com.mongodb.assertions.Assertions.notNull;
/**
* An OP_KILL_CURSOR message.
*
* @mongodb.driver.manual ../meta-driver/latest/legacy/mongodb-wire-protocol/#op-kill-cursors OP_KILL_CURSOR
*/
class KillCursorsMessage extends LegacyMessage {
private final List cursors;
KillCursorsMessage(final List cursors) {
super(OpCode.OP_KILL_CURSORS, MessageSettings.builder().build());
this.cursors = notNull("cursors", cursors);
}
@Override
protected EncodingMetadata encodeMessageBodyWithMetadata(final BsonOutput bsonOutput) {
writeKillCursorsPrologue(cursors.size(), bsonOutput);
for (final Long cur : cursors) {
bsonOutput.writeInt64(cur);
}
return new EncodingMetadata(bsonOutput.getPosition());
}
private void writeKillCursorsPrologue(final int numCursors, final BsonOutput bsonOutput) {
bsonOutput.writeInt32(0); // reserved
bsonOutput.writeInt32(numCursors);
}
}