void _installHost( const string& host , const ShardPtr& s ) {
_lookup[host] = s;
const ConnectionString& cs = s->getAddress();
if ( cs.type() == ConnectionString::SET ) {
if ( cs.getSetName().size() ) {
scoped_lock lk( _rsMutex);
_rsLookup[ cs.getSetName() ] = s;
}
vector<HostAndPort> servers = cs.getServers();
for ( unsigned i=0; i<servers.size(); i++ ) {
_lookup[ servers[i].toString() ] = s;
}
}
}
bool run( const string& dbname,
BSONObj& cmdObj,
int,
string& errmsg,
BSONObjBuilder& result,
bool ) {
string ns;
if ( !FieldParser::extract( cmdObj, nsField, &ns, &errmsg ) ) {
return false;
}
if ( ns.size() == 0 ) {
errmsg = "no namespace specified";
return false;
}
vector<BSONObj> bounds;
if ( !FieldParser::extract( cmdObj, boundsField, &bounds, &errmsg ) ) {
return false;
}
if ( bounds.size() == 0 ) {
errmsg = "no bounds were specified";
return false;
}
if ( bounds.size() != 2 ) {
errmsg = "only a min and max bound may be specified";
return false;
}
BSONObj minKey = bounds[0];
BSONObj maxKey = bounds[1];
if ( minKey.isEmpty() ) {
errmsg = "no min key specified";
return false;
}
if ( maxKey.isEmpty() ) {
errmsg = "no max key specified";
return false;
}
ShardPtr mergeShard = guessMergeShard( NamespaceString( ns ), minKey );
if ( !mergeShard ) {
errmsg = (string)"could not find shard for merge range starting at "
+ minKey.toString();
return false;
}
BSONObjBuilder remoteCmdObjB;
remoteCmdObjB.append( cmdObj[ MergeChunksPassCommand::nsField() ] );
remoteCmdObjB.append( cmdObj[ MergeChunksPassCommand::boundsField() ] );
remoteCmdObjB.append( MergeChunksPassCommand::configField(),
configServer.getPrimary().getAddress().toString() );
remoteCmdObjB.append( MergeChunksPassCommand::shardNameField(),
mergeShard->getName() );
BSONObj remoteResult;
// Throws, but handled at level above. Don't want to rewrap to preserve exception
// formatting.
ScopedDbConnection conn( mergeShard->getAddress() );
bool ok = conn->runCommand( "admin", remoteCmdObjB.obj(), remoteResult );
conn.done();
// Always refresh our chunks afterwards
refreshChunkCache( NamespaceString( ns ) );
result.appendElements( remoteResult );
return ok;
}