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better help text, -n(--rowcount) and --noheaders for mongostat SERVER-784

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This commit is contained in:
Mike Dirolf 2010-03-18 17:56:19 -04:00
parent 2e38dbcc69
commit 443436bae3
1 changed files with 27 additions and 7 deletions
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34
tools/stat.cpp
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@ -37,14 +37,24 @@ namespace mongo {
Stat() : Tool( "stat" , false , "admin" ){
_sleep = 1;
_rowNum = 0;
_showHeaders = true;
add_hidden_options()
( "sleep" , po::value<int>() , "time to sleep between calls" )
;
add_options()
("noheaders", "don't output column names")
("rowcount,n", po::value<int>()->default_value(0), "number of stats lines to print (0 for indefinite)")
;
addPositionArg( "sleep" , 1 );
}
virtual void printExtraHelp( ostream & out ){
out << "usage: " << _name << " [options] [sleep time]" << endl;
out << "sleep time: time to wait (in seconds) between calls" << endl;
}
BSONObj stats(){
BSONObj out;
if ( ! conn().simpleCommand( _db , &out , "serverStatus" ) ){
@ -71,6 +81,9 @@ namespace mongo {
}
void cellstart( stringstream& ss , string name , unsigned& width ){
if ( ! _showHeaders ) {
return;
}
if ( name.size() > width )
width = name.size();
if ( _rowNum % 20 == 0 )
@ -115,8 +128,8 @@ namespace mongo {
cell( ss , "res" , 6 , bx["resident"].numberInt() );
}
cell( ss , "% locked" , 5 , percent( "globalLock.totalTime" , "globalLock.lockTime" , a , b ) );
cell( ss , "% idx miss" , 5 , percent( "indexCounters.btree.accesses" , "indexCounters.btree.misses" , a , b ) );
cell( ss , "% locked" , 8 , percent( "globalLock.totalTime" , "globalLock.lockTime" , a , b ) );
cell( ss , "% idx miss" , 8 , percent( "indexCounters.btree.accesses" , "indexCounters.btree.misses" , a , b ) );
cell( ss , "conn" , 5 , b.getFieldDotted( "connections.current" ).numberInt() );
@ -132,7 +145,7 @@ namespace mongo {
cell( ss , "time" , 8 , temp.str() );
}
if ( _rowNum % 20 == 0 ){
if ( _showHeaders && _rowNum % 20 == 0 ){
// this is the newline after the header line
cout << endl;
}
@ -143,11 +156,16 @@ namespace mongo {
int run(){
_sleep = getParam( "sleep" , _sleep );
if ( hasParam( "noheaders" ) ) {
_showHeaders = false;
}
_rowCount = getParam( "rowcount" , 0 );
BSONObj prev = stats();
if ( prev.isEmpty() )
return -1;
while ( 1 ){
while ( _rowCount == 0 || _rowNum < _rowCount ){
sleepsecs(_sleep);
BSONObj now = stats();
if ( now.isEmpty() )
@ -163,6 +181,8 @@ namespace mongo {
int _sleep;
int _rowNum;
int _rowCount;
bool _showHeaders;
};
}