本文整理汇总了C++中ShardingState::setVersion方法的典型用法代码示例。如果您正苦于以下问题：C++ ShardingState::setVersion方法的具体用法？C++ ShardingState::setVersion怎么用？C++ ShardingState::setVersion使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类ShardingState的用法示例。
在下文中一共展示了ShardingState::setVersion方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: run
bool run(const string& , BSONObj& cmdObj, string& errmsg, BSONObjBuilder& result, bool){
lastError.disableForCommand();
ShardedConnectionInfo* info = ShardedConnectionInfo::get( true );
bool authoritative = cmdObj.getBoolField( "authoritative" );
string configdb = cmdObj["configdb"].valuestrsafe();
{ // configdb checking
if ( configdb.size() == 0 ){
errmsg = "no configdb";
return false;
}
if ( shardingState.enabled() ){
if ( configdb != shardingState.getConfigServer() ){
errmsg = "specified a different configdb!";
return false;
}
}
else {
if ( ! authoritative ){
result.appendBool( "need_authoritative" , true );
errmsg = "first setShardVersion";
return false;
}
shardingState.enable( configdb );
configServer.init( configdb );
}
}
if ( cmdObj["shard"].type() == String ){
shardingState.gotShardName( cmdObj["shard"].String() );
shardingState.gotShardHost( cmdObj["shardHost"].String() );
}
{ // setting up ids
if ( cmdObj["serverID"].type() != jstOID ){
// TODO: fix this
//errmsg = "need serverID to be an OID";
//return 0;
}
else {
OID clientId = cmdObj["serverID"].__oid();
if ( ! info->hasID() ){
info->setID( clientId );
}
else if ( clientId != info->getID() ){
errmsg = "server id has changed!";
return 0;
}
}
}
unsigned long long version = extractVersion( cmdObj["version"] , errmsg );
if ( errmsg.size() ){
return false;
}
string ns = cmdObj["setShardVersion"].valuestrsafe();
if ( ns.size() == 0 ){
errmsg = "need to speciy fully namespace";
return false;
}
const ConfigVersion oldVersion = info->getVersion(ns);
const ConfigVersion globalVersion = shardingState.getVersion(ns);
if ( oldVersion > 0 && globalVersion == 0 ){
// this had been reset
info->setVersion( ns , 0 );
}
if ( version == 0 && globalVersion == 0 ){
// this connection is cleaning itself
info->setVersion( ns , 0 );
return true;
}
if ( version == 0 && globalVersion > 0 ){
if ( ! authoritative ){
result.appendBool( "need_authoritative" , true );
result.appendTimestamp( "globalVersion" , globalVersion );
result.appendTimestamp( "oldVersion" , oldVersion );
errmsg = "dropping needs to be authoritative";
return false;
}
log() << "wiping data for: " << ns << endl;
result.appendTimestamp( "beforeDrop" , globalVersion );
// only setting global version on purpose
// need clients to re-find meta-data
shardingState.setVersion( ns , 0 );
info->setVersion( ns , 0 );
return true;
}
if ( version < oldVersion ){
errmsg = "you already have a newer version";
result.appendTimestamp( "oldVersion" , oldVersion );
//.........这里部分代码省略.........