weathermap

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<?php
// common code used by the poller, the manual-run from the Cacti UI, and from the command-line manual-run.
// this is the easiest way to keep it all consistent!

function weathermap_memory_check($note="MEM")
{
        if(function_exists("memory_get_usage"))
        {
                $mem_used = nice_bandwidth(memory_get_usage());
                $mem_allowed = ini_get("memory_limit");
                debug("$note: memory_get_usage() says ".$mem_used."Bytes used. Limit is ".$mem_allowed."\n");
        }
}

function weathermap_run_maps($mydir) {
        global $config;
        global $weathermap_debugging, $WEATHERMAP_VERSION;

        include_once($mydir.DIRECTORY_SEPARATOR."HTML_ImageMap.class.php");
        include_once($mydir.DIRECTORY_SEPARATOR."Weathermap.class.php");

        $outdir = $mydir.DIRECTORY_SEPARATOR.'output';
        $confdir = $mydir.DIRECTORY_SEPARATOR.'configs';

        $mapcount = 0;

        // take our debugging cue from the poller - turn on Poller debugging to get weathermap debugging
        if (read_config_option("log_verbosity") >= POLLER_VERBOSITY_DEBUG)
        {
                $weathermap_debugging = TRUE;
                $mode_message = "DEBUG mode is on";
        }
        else
        {
                $mode_message = "Normal logging mode. Turn on DEBUG in Cacti for more information";
        }
        $quietlogging = read_config_option("weathermap_quiet_logging");  
        // moved this outside the module_checks, so there should always be something in the logs!
        if($quietlogging==0) cacti_log("Weathermap $WEATHERMAP_VERSION starting - $mode_message",true,"WEATHERMAP");

        if(module_checks())
        {
                weathermap_memory_check("MEM Initial");
                // move to the weathermap folder so all those relatives paths don't *have* to be absolute
                $orig_cwd = getcwd();
                chdir($mydir);

                // first, see if the output directory even exists
                if(is_dir($outdir))
                {
                        // next, make sure that we stand a chance of writing files
                        //// $testfile = realpath($outdir."weathermap.permissions.test");
                        $testfile = $outdir.DIRECTORY_SEPARATOR."weathermap.permissions.test";
                        $testfd = fopen($testfile, 'w');
                        if($testfd)
                        { 
                                fclose($testfd); 
                                unlink($testfile);

                                $queryrows = db_fetch_assoc("select * from weathermap_maps where active='on' order by sortorder,id");

                                if( is_array($queryrows) )
                                {
                                        debug("Iterating all maps.");

                                        $imageformat = strtolower(read_config_option("weathermap_output_format"));

                                        foreach ($queryrows as $map) {
                                                $mapfile = $confdir.DIRECTORY_SEPARATOR.$map['configfile'];
                                                $htmlfile = $outdir.DIRECTORY_SEPARATOR."weathermap_".$map['id'].".html";
                                                $imagefile = $outdir.DIRECTORY_SEPARATOR."weathermap_".$map['id'].".".$imageformat;
                                                $thumbimagefile = $outdir.DIRECTORY_SEPARATOR."weathermap_thumb_".$map['id'].".".$imageformat;

                                                if(file_exists($mapfile))
                                                {
                                                        if($quietlogging==0) warn("Map: $mapfile -> $htmlfile & $imagefile");
                                                        weathermap_memory_check("MEM starting $mapcount");
                                                        $wmap = new Weathermap;
                                                        $wmap->context = "cacti";

                                                        // we can grab the rrdtool path from Cacti's config, in this case
                                                        $wmap->rrdtool  = read_config_option("path_rrdtool");

                                                        $wmap->ReadConfig($mapfile);
                                                        weathermap_memory_check("MEM postread $mapcount");
                                                        $wmap->ReadData();
                                                        weathermap_memory_check("MEM postdata $mapcount");

                                                        // $wmap->imageuri = $config['url_path'].'/plugins/weathermap/output/weathermap_'.$map['id'].".".$imageformat;
                                                        $wmap->imageuri = 'output/weathermap_'.$map['id'].".".$imageformat;

                                                        if($quietlogging==0) warn("About to write image file. If this is the last message in your log, increase memory_limit in php.ini");
                                                        weathermap_memory_check("MEM pre-render $mapcount");
                                                        
                                                        $wmap->DrawMap($imagefile,$thumbimagefile,read_config_option("weathermap_thumbsize"));
                                                        
                                                        if($quietlogging==0) warn("Wrote map to $imagefile and $thumbimagefile");
                                                        $fd = @fopen($htmlfile, 'w');
                                                        if($fd != FALSE)
                                                        {
                                                                fwrite($fd, $wmap->MakeHTML('weathermap_'.$map['id'].'_imap'));
                                                                fclose($fd);
                                                                debug("Wrote HTML to $htmlfile");
                                                        }
                                                        else
                                                        {
                                                                if(file_exists($htmlfile))
                                                                {
                                                                        warn("Failed to overwrite $htmlfile - permissions of existing file are wrong?\n");
                                                                }
                                                                else
                                                                {
                                                                        warn("Failed to create $htmlfile - permissions of output directory are wrong?\n");
                                                                }
                                                        }

                                                        db_execute("update weathermap_maps set titlecache='".mysql_real_escape_string($wmap->title)."' where id=".$map['id']);
                                                        
                                                        unset($wmap);
                                                        weathermap_memory_check("MEM after $mapcount");
                                                        $mapcount++;
                                                }
                                                else
                                                {
                                                        warn("Mapfile $mapfile is not readable or doesn't exist");
                                                }
                                        }
                                        debug("Iterated all $mapcount maps.");
                                }
                                else
                                {
                                        if($quietlogging==0) warn("No activated maps found.");
                                }
                        }
                        else
                        {
                                warn("Output directory ($outdir) isn't writable (tried to create '$testfile'). No maps created. You probably need to make it writable by the poller process (like you did with the RRA directory)");
                        }
                }
                else
                {
                        warn("Output directory ($outdir) doesn't exist!. No maps created. You probably need to create that directory, and make it writable by the poller process (like you did with the RRA directory)");
                }
                weathermap_memory_check("MEM Final");
                chdir($orig_cwd);
                if($quietlogging==0) warn("Weathermap $WEATHERMAP_VERSION run complete - $mapcount maps were run");
        }
        else
        {
                warn("Required modules for PHP Weathermap $WEATHERMAP_VERSION were not present. Not running.");
        }
}


// vim:ts=4:sw=4:
?>