/*
* ToroDB
* Copyright © 2014 8Kdata Technology (www.8kdata.com)
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package com.torodb.mongodb.commands.signatures.internal;
import com.eightkdata.mongowp.bson.BsonDocument;
import com.eightkdata.mongowp.bson.BsonObjectId;
import com.eightkdata.mongowp.exceptions.BadValueException;
import com.eightkdata.mongowp.exceptions.NoSuchKeyException;
import com.eightkdata.mongowp.exceptions.TypesMismatchException;
import com.eightkdata.mongowp.fields.HostAndPortField;
import com.eightkdata.mongowp.fields.IntField;
import com.eightkdata.mongowp.fields.ObjectIdField;
import com.eightkdata.mongowp.fields.StringField;
import com.eightkdata.mongowp.server.api.impl.AbstractNotAliasableCommand;
import com.eightkdata.mongowp.utils.BsonDocumentBuilder;
import com.eightkdata.mongowp.utils.BsonReaderTool;
import com.google.common.net.HostAndPort;
import com.torodb.mongodb.commands.signatures.internal.ReplSetElectCommand.ReplSetElectArgument;
import com.torodb.mongodb.commands.signatures.internal.ReplSetElectCommand.ReplSetElectReply;
import javax.annotation.Nonnull;
import javax.annotation.Nullable;
public class ReplSetElectCommand
extends AbstractNotAliasableCommand<ReplSetElectArgument, ReplSetElectReply> {
public static final IntField COMMAND_FIELD = new IntField("replSetElect");
public static final ReplSetElectCommand INSTANCE = new ReplSetElectCommand();
private ReplSetElectCommand() {
super(COMMAND_FIELD.getFieldName());
}
@Override
public Class<? extends ReplSetElectArgument> getArgClass() {
return ReplSetElectArgument.class;
}
@Override
public ReplSetElectArgument unmarshallArg(BsonDocument requestDoc)
throws TypesMismatchException, NoSuchKeyException, BadValueException {
return ReplSetElectArgument.unmarshall(requestDoc);
}
@Override
public BsonDocument marshallArg(ReplSetElectArgument request) {
return request.marshall();
}
@Override
public Class<? extends ReplSetElectReply> getResultClass() {
return ReplSetElectReply.class;
}
@Override
public BsonDocument marshallResult(ReplSetElectReply reply) {
return new BsonDocumentBuilder(2)
.append(ReplSetElectReply.VOTE_FIELD, reply.getVote())
.append(ReplSetElectReply.ROUND_FIELD, reply.getRound())
.build();
}
@Override
public ReplSetElectReply unmarshallResult(BsonDocument resultDoc)
throws BadValueException, TypesMismatchException, NoSuchKeyException {
return ReplSetElectReply.unmarshall(resultDoc);
}
public static class ReplSetElectArgument {
private static final StringField SET_NAME_FIELD = new StringField("set");
private static final HostAndPortField WHO_FIELD = new HostAndPortField("who");
private static final IntField CLIENT_ID_FIELD = new IntField("whoid");
private static final IntField CFG_VER_FIELD = new IntField("cfgver");
private static final ObjectIdField ROUND_FIELD = new ObjectIdField("round");
@Nonnull
private final String replSetName;
@Nullable
private final HostAndPort who;
private final int clientId;
private final int cfgVersion;
@Nonnull
private final BsonObjectId round;
public ReplSetElectArgument(
@Nonnull String setName,
int clientId,
int cfgVersion,
@Nonnull BsonObjectId round) {
this.replSetName = setName;
this.who = null;
this.clientId = clientId;
this.cfgVersion = cfgVersion;
this.round = round;
}
public ReplSetElectArgument(
@Nonnull String setName,
@Nonnull HostAndPort who,
int clientId,
int cfgVersion,
@Nonnull BsonObjectId round) {
this.replSetName = setName;
this.who = who;
this.clientId = clientId;
this.cfgVersion = cfgVersion;
this.round = round;
}
/**
* The name of the set
*
* @return
*/
@Nonnull
public String getReplSetName() {
return replSetName;
}
/**
* @return replSet id of the member that sent the replSetFresh command
*/
public int getClientId() {
return clientId;
}
/**
*
* @return replSet config version that the member who sent the command thinks it has
*/
public int getCfgVersion() {
return cfgVersion;
}
/**
*
* @return unique ID for this election
*/
@Nonnull
public BsonObjectId getRound() {
return round;
}
private BsonDocument marshall() {
BsonDocumentBuilder builder = new BsonDocumentBuilder();
builder.append(COMMAND_FIELD, 1);
builder.append(SET_NAME_FIELD, replSetName);
if (who != null) {
builder.append(WHO_FIELD, who);
}
builder.append(CLIENT_ID_FIELD, clientId);
builder.append(CFG_VER_FIELD, cfgVersion);
builder.append(ROUND_FIELD, round);
return builder.build();
}
public static ReplSetElectArgument unmarshall(
BsonDocument bson) throws TypesMismatchException, NoSuchKeyException {
String setName = BsonReaderTool.getString(bson, SET_NAME_FIELD);
int cliendId = BsonReaderTool.getInteger(bson, CLIENT_ID_FIELD);
int cfgversion = BsonReaderTool.getNumeric(bson, CFG_VER_FIELD).intValue();
BsonObjectId round = BsonReaderTool.getObjectId(bson, ROUND_FIELD);
return new ReplSetElectArgument(setName, cliendId, cfgversion, round);
}
}
public static class ReplSetElectReply {
private static final IntField VOTE_FIELD = new IntField("vote");
private static final ObjectIdField ROUND_FIELD = new ObjectIdField("round");
private final int vote;
private final BsonObjectId round;
public ReplSetElectReply(int vote, BsonObjectId round) {
this.vote = vote;
this.round = round;
}
public int getVote() {
return vote;
}
public BsonObjectId getRound() {
return round;
}
private static ReplSetElectReply unmarshall(BsonDocument doc)
throws BadValueException, TypesMismatchException, NoSuchKeyException {
if (!doc.get(VOTE_FIELD.getFieldName()).isInt32()) {
throw new BadValueException("wrong type vote argument in replSetElect command: " + doc.get(
VOTE_FIELD.getFieldName()).getType());
}
int vote = BsonReaderTool.getInteger(doc, VOTE_FIELD);
BsonObjectId round = BsonReaderTool.getObjectId(doc, ROUND_FIELD);
return new ReplSetElectReply(vote, round);
}
}
}