/*
* 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.OpTime;
import com.eightkdata.mongowp.bson.BsonDateTime;
import com.eightkdata.mongowp.bson.BsonDocument;
import com.eightkdata.mongowp.bson.BsonTimestamp;
import com.eightkdata.mongowp.bson.utils.DefaultBsonValues;
import com.eightkdata.mongowp.bson.utils.TimestampToDateTime;
import com.eightkdata.mongowp.exceptions.BadValueException;
import com.eightkdata.mongowp.exceptions.NoSuchKeyException;
import com.eightkdata.mongowp.exceptions.TypesMismatchException;
import com.eightkdata.mongowp.fields.BooleanField;
import com.eightkdata.mongowp.fields.DateTimeField;
import com.eightkdata.mongowp.fields.HostAndPortField;
import com.eightkdata.mongowp.fields.IntField;
import com.eightkdata.mongowp.fields.LongField;
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.ReplSetFreshCommand.ReplSetFreshArgument;
import com.torodb.mongodb.commands.signatures.internal.ReplSetFreshCommand.ReplSetFreshReply;
import javax.annotation.Nonnull;
import javax.annotation.Nullable;
/**
*
*/
public class ReplSetFreshCommand
extends AbstractNotAliasableCommand<ReplSetFreshArgument, ReplSetFreshReply> {
private static final IntField COMMAND_FIELD = new IntField("replSetFresh");
public static final ReplSetFreshCommand INSTANCE = new ReplSetFreshCommand();
private ReplSetFreshCommand() {
super(COMMAND_FIELD.getFieldName());
}
@Override
public Class<? extends ReplSetFreshArgument> getArgClass() {
return ReplSetFreshArgument.class;
}
@Override
public ReplSetFreshArgument unmarshallArg(BsonDocument requestDoc)
throws TypesMismatchException, NoSuchKeyException, BadValueException {
return ReplSetFreshArgument.unmarshall(requestDoc);
}
@Override
public BsonDocument marshallArg(ReplSetFreshArgument request) {
return request.marshall();
}
@Override
public Class<? extends ReplSetFreshReply> getResultClass() {
return ReplSetFreshReply.class;
}
@Override
public BsonDocument marshallResult(ReplSetFreshReply reply) {
return reply.marshall();
}
@Override
public ReplSetFreshReply unmarshallResult(BsonDocument resultDoc) {
throw new UnsupportedOperationException("Not implemented yet!"); //TODO
}
public static class ReplSetFreshArgument {
private static final StringField SET_NAME_FIELD = new StringField("set");
private static final HostAndPortField WHO_FIELD = new HostAndPortField("who");
private static final IntField ID_FIELD = new IntField("id");
private static final LongField CFG_VER_FIELD = new LongField("cfgver");
private static final DateTimeField OPTIME_FIELD = new DateTimeField("opTime");
private final String setName;
private final HostAndPort who;
private final int clientId;
private final long cfgVersion;
private final BsonTimestamp opTime;
public ReplSetFreshArgument(
String setName,
HostAndPort who,
int clientId,
long cfgVersion,
BsonTimestamp opTime) {
this.setName = setName;
this.who = who;
this.clientId = clientId;
this.cfgVersion = cfgVersion;
this.opTime = opTime;
}
/**
*
* @return the name of the set
*/
public String getSetName() {
return setName;
}
/**
*
* @return the host and port of the member that sent the request
*/
public HostAndPort getWho() {
return who;
}
/**
*
* @return the repl set of the member that sent the request
*/
public int getClientId() {
return clientId;
}
/**
*
* @return replSet config version that the member who sent the request
*/
public long getCfgVersion() {
return cfgVersion;
}
/**
*
* @return last optime seen by the member who sent the request
*/
public BsonTimestamp getOpTime() {
return opTime;
}
private BsonDocument marshall() {
BsonDocumentBuilder builder = new BsonDocumentBuilder();
builder.append(COMMAND_FIELD, 1);
builder.append(SET_NAME_FIELD, setName);
BsonDateTime dateTimeOpTime = TimestampToDateTime.toDateTime(
opTime, DefaultBsonValues::newDateTime);
builder.append(OPTIME_FIELD, dateTimeOpTime.getValue());
builder.append(WHO_FIELD, who);
builder.append(CFG_VER_FIELD, cfgVersion);
builder.append(ID_FIELD, clientId);
return builder.build();
}
private static ReplSetFreshArgument unmarshall(BsonDocument bson) throws
TypesMismatchException, NoSuchKeyException {
int clientId = BsonReaderTool.getInteger(bson, ID_FIELD);
String setName = BsonReaderTool.getString(bson, SET_NAME_FIELD);
HostAndPort who = BsonReaderTool.getHostAndPort(bson, WHO_FIELD);
long cfgver = BsonReaderTool.getNumeric(bson, CFG_VER_FIELD).longValue();
BsonTimestamp optime = BsonReaderTool.getTimestampFromDateTime(bson, OPTIME_FIELD);
return new ReplSetFreshArgument(setName, who, clientId, cfgver, optime);
}
}
public static class ReplSetFreshReply {
private static final BooleanField FRESHER_FIELD = new BooleanField("fresher");
private static final StringField INFO_FIELD = new StringField("info");
private static final StringField ERRMSG_FIELD = new StringField("errmsg");
//Note: MongoDB usually stores and send optimes as datetimes
private static final DateTimeField OPTIME_FIELD = new DateTimeField("optime");
private static final BooleanField VETO_FIELD = new BooleanField("veto");
private final String info;
private final String vetoMessage;
private final OpTime opTime;
private final boolean weAreFresher;
private final boolean doVeto;
/**
*
* @param info
* @param vetoMessage the reason why the votation is vetoed. If null, then this node is not
* vetoing.
* @param opTime
* @param weAreFresher
*/
public ReplSetFreshReply(
@Nullable String info,
@Nullable String vetoMessage,
@Nonnull OpTime opTime,
boolean weAreFresher) {
this.info = info;
this.vetoMessage = vetoMessage;
this.opTime = opTime;
this.weAreFresher = weAreFresher;
this.doVeto = vetoMessage != null;
}
@Nullable
public String getInfo() {
return info;
}
@Nullable
public String getVetoMessage() {
return vetoMessage;
}
@Nonnull
public OpTime getOpTime() {
return opTime;
}
public boolean isWeAreFresher() {
return weAreFresher;
}
public boolean isDoVeto() {
return doVeto;
}
private BsonDocument marshall() {
BsonDocumentBuilder result = new BsonDocumentBuilder();
result.append(FRESHER_FIELD, weAreFresher);
if (getInfo() != null) {
result.append(INFO_FIELD, info);
}
if (getVetoMessage() != null) {
result.append(ERRMSG_FIELD, vetoMessage);
}
result.append(OPTIME_FIELD, DefaultBsonValues.newDateTime(
opTime.getTimestamp()).getValue());
result.append(VETO_FIELD, isDoVeto());
return result.build();
}
}
}