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AlternC
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Improving the script with new checks, debug prints and gestion of failed scripts

This commit is contained in:
Steven Mondji-Lerider 2013-04-23 13:32:37 +00:00
parent 5a3559a1fa
commit c06c1cf344
1 changed files with 62 additions and 15 deletions
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75
src/do_actions.php
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@ -34,6 +34,16 @@
* @copyright AlternC-Team 2002-2013 http://alternc.org/
*/
// Put this var to 1 if you want to enable debug prints
$debug=1;
// Debug function that print infos
function d($mess){
global $debug;
if ($debug == 1)
echo "$mess\n";
}
require_once("/usr/share/alternc/panel/class/config_nochk.php");
$LOCK_FILE='/var/run/alternc/do_actions_cron.lock';
@ -42,23 +52,50 @@ $MY_PID=getmypid();
// Check if script isn't already running
if (file_exists($LOCK_FILE) !== false){
d("Lock file already exists. ");
// Check if file is in process list
$PID=file_get_contents($LOCK_FILE);
if ($PID == exec("pidof $SCRIPT | grep -v $MY_PID")){
d("My PID is $MY_PID, PID in the lock file is $PID");
if ($PID == exec("pidof $SCRIPT | tr ' ' '\n' | grep -v $MY_PID")){
// Previous cron is not finished yet, just exit
echo "Previous cron is not finished yet, just exit\n";
d("Previous cron is already running, we just exit and let it finish :-)");
exit(0);
}else{
// Previous cron failed!
echo "Previous cron failed!\n";
d("No process with PID $PID found! Previous cron failed...\nRemoving lock file and trying to process the failed action...");
// Delete the lock and continue to the next action
unlink($LOCK_FILE);
}
}
// We lock the script
if (file_put_contents($LOCK_FILE,$MY_PID) === false){
// Lock with the current script's PID
d("Lock the script...");
if (file_put_contents($LOCK_FILE,$MY_PID) === false){
die("Cannot open/write $LOCK_FILE");
}
// Get the action that was processing when previous script failed
while($cc=$action->get_job()){
$c=$cc[0];
// We can resume these types of action, so we reset the job to process it later
d("Previous job was the n°".$c["id"]." : '".$c["type"]."'");
if($c["type"] == "CREATE_FILE" || $c["type"] == "CREATE_DIR" || $c["type"] == "DELETE"){
d("Reset of the job! So it will be resumed...");
$action->reset_job($c["id"]);
}else{
// We can't resume the others types, notify the fail and finish this action
d("Can't resume the job, finishing it with a fail status.");
if(!$action->finish($c["id"],"Fail: Previous script crashed while processing this action, cannot resume it.")){
d("FINISH FAILED!");
break; // Else we go into an infinite loop... AAAAHHHHHH
}
}
}
}
}else{
// Lock with the current script's PID
d("Lock the script...");
if (file_put_contents($LOCK_FILE,$MY_PID) === false){
die("Cannot open/write $LOCK_FILE");
}
}
//We get the next action to do
@ -66,21 +103,24 @@ while ($rr=$action->get_action()){
$r=$rr[0];
$return="OK";
// We lock the action
echo "-----------\nBeginning action n°".$r["id"]."\n";
d("-----------\nBeginning action n°".$r["id"]);
$action->begin($r["id"]);
// We process it
$params=unserialize($r["parameters"]);
// Remove all previous error message...
@trigger_error("");
// We exec with the specified user
echo "Executing action '".$r["type"]."' with user '".$r["user"]."'\n";
d("Executing action '".$r["type"]."' with user '".$r["user"]."'");
// For now, this script only work for user 'root'
if($r["user"] != "root"){
if(exec("su ".$r["user"])){ // TODO
echo "Login successfull, now processing the action...\n";
d("Login successfull, now processing the action...");
}else{
echo "Error: can't login as ".$r["user"]."\n";
$action->finish($r["id"],"Can't login as user ".$r["user"]);
d("Error: cannot login as ".$r["user"]);
if(!$action->finish($r["id"],"Fail: Cannot login as user ".$r["user"])){
d("FINISH FAILED!");
break; // Else we go into an infinite loop... AAAAHHHHHH
}
continue;
}
}
@ -89,9 +129,11 @@ while ($rr=$action->get_action()){
@file_put_contents($params["file"],$params["content"]);
break;
case "CREATE_DIR" :
// Create the directory and make parent directories as needed
@mkdir($params["dir"],0777,true);
break;
case "DELETE" :
// Delete file/directory and its contents recursively
@exec("rm -rf ".$params["dir"]." 2>&1", $output);
break;
case "MOVE" :
@ -104,6 +146,7 @@ while ($rr=$action->get_action()){
// TODO
break;
default :
$output=array("Fail: Sorry dude, i don't know this type of action");
break;
}
// Get the last error if exists.
@ -113,12 +156,16 @@ while ($rr=$action->get_action()){
if($error=error_get_last())
if($error["message"]!="")
$return=$error["message"];
echo "Finishing... return value is : $return\n\n";
// We finished the action, notify the DB.
$action->finish($r["id"],$return);
d("Finishing... return value is : $return\n");
if(!$action->finish($r["id"],addslashes($return))){
d("FINISH FAILED!");
break; // Else we go into an infinite loop... AAAAHHHHHH
}
}
// Unlock the script
d("Unlock the script...");
unlink($LOCK_FILE);
// Exit this script