//a program for polling the status of a WU in the BOINC
//system this is needed for integration with GRID.
//
//the states have  to be the of the type the GRAM framework supplies:
//Globus::GRAM::JobState
//
//Pending: 1
//Active: 2
//Done: 3
//Failed: 4
//Suspended: 5
//Unsubmitted: 6
//
//
// Author: Christian Soettrup

#include "boinc_db.h"
#include <iostream>
#include <string>
#include "sched_config.h"

#define VERSION 0.3

using namespace std;

DB_WORKUNIT wu;
DB_RESULT result;
SCHED_CONFIG config;


void usage(int status){
	if (status !=0){
	}else{
	cout << "pollWU v." << VERSION << endl;
	cout << "usage:" << endl;
	cout << "   pollWU [-h] [-c config_dir] wuname\n";
	cout << "\t-h\tprints this help\n";
	cout << "\t-c config_dir\tread the database configuration from this file\n";
	}
	exit(status);
}

int main(int argc, char** argv){
	int retval,final;
	string wuname;
	string database;
	char buf[256];
	MYSQL_ROW row;
	MYSQL_RES* rp;
	string config_dir = ".";
	//parse the input 
	if (argc<2){
		usage(0);
		return -1;
	}
	for (int i=1;i<argc-1;i++){
	   if (!strcmp(argv[i],"-h")){
	   	usage(0);
		return -1;
	   }
	   if (!strcmp(argv[i],"-c")){
	   	config_dir = argv[i++];
		return -1;
	   }
	   	   
	}
	final=0;
	wuname = argv[argc-1]; 
	retval = config.parse_file((char *) config_dir.c_str());
    if (retval) {
        fprintf(stderr,"can't read config file\n");
        return -1;
    }
	retval = boinc_db.open(config.db_name, config.db_host,config.db_user, config.db_passwd);
	
	if (retval) {
        	cout << "boinc_db.open failed: " << retval<<endl;;
        	return -1;
    	}
	sprintf(buf,"where name='%s'",wuname.c_str());
	retval = wu.lookup(buf);
	if (retval){
		cout << "no workunit with name: " << wuname << endl;
		final= -1;
	}else{
	
		if (!(wu.canonical_resultid==0)){ // a canonical result has been chosen
			cout << "Status:\tDONE\n";
			final= 3;
		}else if(wu.error_mask){ // an error mask has been set
			cout << "Status:\tFAILED\n";
			final= 4;
		}else {
			//now we need to check the results belonging to this workunit to figure out its state.
			
			sprintf(buf,"select * from result where workunitid='%d'",wu.id);
			retval = boinc_db.do_query(buf);
			if (retval){ //there was no results yet
				cout << "Status:\tUNSUBMITTED\n";
				boinc_db.close();
				return 6;	
			}
			rp = mysql_store_result(boinc_db.mysql);
			if (!rp) {
				boinc_db.close();
				return -1;
			}
			while ((row = mysql_fetch_row(rp))&&(final!=2)){
				result.db_parse(row);
				if (result.server_state==RESULT_SERVER_STATE_IN_PROGRESS){ 
					cout << "Status:\tACTIVE\n";
					final=2;
				}	
			}
			mysql_free_result(rp);
			if (final==0){
				cout << "Status:\tPENDING\n";
				final=1;
			}		
		}
	}
	boinc_db.close();
	return final;
}
const char *BOINC_RCSID_6d019426c9="$Id$";