fixed various issues with testnode and make it even more robust

Here the list of changes:
- close all timers when quitting, this makes stopping an erp5tetsnode
  much faster
- remove hack on slapos/testnode after fix of slapos.cookbook
- remove old tmp files left by buildout (buildout has te bo fixed too)
- remove logging handlers where the are not needed any more
- fixed the kill command, it was not able to kill properly childs

erp5/tests/testERP5TestNode.py

@@ -31,10 +31,12 @@ class ERP5TestNode(TestCase):
     self.remote_repository0 = os.path.join(self._temp_dir, 'rep0')
     self.remote_repository1 = os.path.join(self._temp_dir, 'rep1')
     self.remote_repository2 = os.path.join(self._temp_dir, 'rep2')
+    self.system_temp_folder = os.path.join(self._temp_dir,'tmp')
     os.mkdir(self.working_directory)
     os.mkdir(self.slapos_directory)
     os.mkdir(self.test_suite_directory)
     os.mkdir(self.environment)
+    os.mkdir(self.system_temp_folder)
     os.makedirs(self.log_directory)
     os.close(os.open(self.log_file,os.O_CREAT))
     os.mkdir(self.remote_repository0)
@@ -60,6 +62,7 @@ class ERP5TestNode(TestCase):
     config["log_file"] = self.log_file
     config["test_suite_master_url"] = None
     config["test_node_title"] = "Foo-Test-Node"
+    config["system_temp_folder"] = self.system_temp_folder
     return TestNode(self.log, config)
 
   def getTestSuiteData(self, add_third_repository=False, reference="foo"):
@@ -584,4 +587,26 @@ branch = foo
     # then we set keep time to 0, folder will be deleted
     test_node.max_log_time = 0
     test_node._cleanupLog()
-    check(set(['a_file']))
\ No newline at end of file
+    check(set(['a_file']))
+
+  def test_17_cleanupLogDirectory(self):
+    # Make sure that we are able to cleanup old temp folders
+    test_node = self.getTestNode()
+    temp_directory = self.system_temp_folder
+    def check(file_list):
+      directory_dir = os.listdir(temp_directory)
+      self.assertTrue(set(file_list).issubset(
+           set(directory_dir)),
+           "%r not contained by %r" % (file_list, directory_dir))
+    check([])
+    os.mkdir(os.path.join(temp_directory, 'buildoutA'))
+    os.mkdir(os.path.join(temp_directory, 'something'))
+    os.mkdir(os.path.join(temp_directory, 'tmpC'))
+    check(set(['buildoutA', 'something', 'tmpC']))
+    # default log file time is 15 days, so nothing is going to be deleted
+    test_node._cleanupTemporaryFiles()
+    check(set(['buildoutA', 'something', 'tmpC']))
+    # then we set keep time to 0, folder will be deleted
+    test_node.max_temp_time = 0
+    test_node._cleanupLog()
+    check(set(['something']))
\ No newline at end of file

erp5/util/testnode/ProcessManager.py

@@ -99,21 +99,26 @@ def subprocess_capture(p, log, log_prefix, get_output=True):
   return (p.stdout and ''.join(stdout),
           p.stderr and ''.join(stderr))
 
-def killCommand(pid):
+def killCommand(pid, log):
   """
   To avoid letting orphaned childs, we stop the process and all it's
   child (until childs does not change) and then we brutally kill
   everyone at the same time
   """
   process = psutil.Process(pid)
-  child_set = set([x.pid for x in process.get_children(recursive=True)])
-  new_child_set = None
+  new_child_set = set([x.pid for x in process.get_children(recursive=True)])
+  child_set = None
   os.kill(pid, signal.SIGSTOP)
   while new_child_set != child_set:
+    child_set = new_child_set
+    log("killCommand, new_child_set : %r, child_set: %r" % (
+        new_child_set, child_set))
     for child_pid in child_set:
       os.kill(child_pid, signal.SIGSTOP)
     time.sleep(1)
+    child_set = new_child_set
     new_child_set = set([x.pid for x in process.get_children(recursive=True)])
+  log("killCommand, finishing, child_set : %r" % (child_set,))
   for child_pid in child_set:
     os.kill(child_pid, signal.SIGKILL)
   os.kill(pid, signal.SIGKILL)
@@ -130,12 +135,13 @@ class ProcessManager(object):
     self.p = None
     self.result = None
     self.max_timeout = kw.get("max_timeout") or MAX_TIMEOUT
+    self.timer_set = set()
 
   def spawn(self, *args, **kw):
     def timeoutExpired(p, log):
       if p.poll() is None:
         log('PROCESS TOO LONG OR DEAD, GOING TO BE TERMINATED')
-        killCommand(p.pid)
+        killCommand(p.pid, log)
 
     if self.under_cancellation:
       raise CancellationError("Test Result was cancelled")
@@ -161,10 +167,12 @@ class ProcessManager(object):
                          stderr=subprocess.PIPE, env=env, **subprocess_kw)
     self.process_pid_set.add(p.pid)
     timer = threading.Timer(self.max_timeout, timeoutExpired, args=(p, log))
+    self.timer_set.add(timer)
     timer.start()
     stdout, stderr = subprocess_capture(p, log, log_prefix,
                                         get_output=get_output)
     timer.cancel()
+    self.timer_set.discard(timer)
     result = dict(status_code=p.returncode, command=command,
                   stdout=stdout, stderr=stderr)
     self.process_pid_set.discard(p.pid)
@@ -184,9 +192,11 @@ class ProcessManager(object):
     self.log('ProcessManager killPreviousRun, going to kill %r' % (self.process_pid_set,))
     if cancellation:
       self.under_cancellation = True
+    for timer in self.timer_set:
+      timer.cancel()
     for pgpid in self.process_pid_set:
       try:
-        killCommand(pgpid)
+        killCommand(pgpid, self.log)
       except:
         pass
     try:

erp5/util/testnode/__init__.py

@@ -27,6 +27,7 @@
 import ConfigParser
 import argparse
 import logging
+import logging.handlers
 import os
 import pkg_resources
 
@@ -58,7 +59,9 @@ def main(*args):
       logger.addHandler(logging.StreamHandler())
       logger.info('Activated console output.')
     if parsed_argument.logfile:
-      file_handler = logging.FileHandler(filename=parsed_argument.logfile)
+      file_handler = logging.handlers.RotatingFileHandler(
+        filename=parsed_argument.logfile,
+        maxBytes=20000000, backupCount=4)
       file_handler.setFormatter(formatter)
       logger.addHandler(file_handler)
       logger.info('Activated logfile %r output' % parsed_argument.logfile)
@@ -87,6 +90,7 @@ def main(*args):
         CONFIG['proxy_port'])
   CONFIG['httpd_url'] = 'https://[%s]:%s' % (CONFIG['httpd_ip'],
         CONFIG['httpd_port'])
+  CONFIG['system_temp_folder'] = "/tmp"
 
   # generate vcs_repository_list
   if 'bot_environment' in config.sections():

erp5/util/testnode/testnode.py

@@ -45,6 +45,7 @@ from erp5.util import taskdistribution
 DEFAULT_SLEEP_TIMEOUT = 120 # time in seconds to sleep
 MAX_LOG_TIME = 15 # time in days we should keep logs that we can see through
                   # httd
+MAX_TEMP_TIME = 5 # time in days we should keep temp files
 supervisord_pid_file = None
 
 PROFILE_PATH_KEY = 'profile_path'
@@ -88,6 +89,7 @@ class NodeTestSuite(SlapOSInstance):
   def __init__(self, reference):
     super(NodeTestSuite, self).__init__()
     self.reference = reference
+    self.file_handler = None
 
   def edit(self, **kw):
     super(NodeTestSuite, self).edit(**kw)
@@ -131,29 +133,31 @@ class NodeTestSuite(SlapOSInstance):
     return getattr(self, "suite_log", None)
 
   def _initializeSuiteLog(self):
+    # remove previous handlers
+    logger = logging.getLogger('testsuite')
+    if self.file_handler is not None:
+      logger.removeHandler(self.file_handler)
+    # and replace it with new handler
     logger_format = '%(asctime)s %(name)-13s: %(levelname)-8s %(message)s'
     formatter = logging.Formatter(logger_format)
     logging.basicConfig(level=logging.INFO, format=logger_format)
-    logger = logging.getLogger('testsuite')
-    file_handler = logging.FileHandler(filename=self.suite_log_path)
-    file_handler.setFormatter(formatter)
-    logger.addHandler(file_handler)
+    self.file_handler = logging.FileHandler(filename=self.suite_log_path)
+    self.file_handler.setFormatter(formatter)
+    logger.addHandler(self.file_handler)
     logger.info('Activated logfile %r output' % self.suite_log_path)
     self.suite_log = logger.info
 
 class TestNode(object):
 
-  def __init__(self, log, config, max_log_time=MAX_LOG_TIME):
+  def __init__(self, log, config, max_log_time=MAX_LOG_TIME,
+               max_temp_time=MAX_TEMP_TIME):
     self.testnode_log = log
     self.log = log
     self.config = config or {}
     self.process_manager = ProcessManager(log)
     self.node_test_suite_dict = {}
-    # hack until slapos.cookbook is updated
-    if self.config.get('working_directory', '').endswith("slapos"):
-      self.config['working_directory'] = self.config[
-        'working_directory'][:-(len("slapos"))] + "testnode"
     self.max_log_time = max_log_time
+    self.max_temp_time = max_temp_time
 
   def checkOldTestSuite(self,test_suite_data):
     config = self.config
@@ -392,11 +396,33 @@ branch = %(branch)s
           self.log("deleting log directory %r" % (folder_path,))
           shutil.rmtree(folder_path)
 
+  def _cleanupTemporaryFiles(self):
+    """
+    buildout seems letting files under /tmp. To avoid regular error of
+    missing disk space, remove old logs
+    """
+    temp_directory = self.config["system_temp_folder"]
+    now = time.time()
+    user_id = os.geteuid()
+    for temp_folder in os.listdir(temp_directory):
+      folder_path = os.path.join(temp_directory, temp_folder)
+      if (temp_folder.startswith("tmp") or
+          temp_folder.startswith("buildout")):
+        stat = os.stat(folder_path)
+        if stat.st_uid == user_id and \
+            (now - stat.st_mtime)/86400 > self.max_temp_time:
+          self.log("deleting temp directory %r" % (folder_path,))
+          if os.path.isdir(folder_path):
+            shutil.rmtree(folder_path)
+          else:
+            os.remove(folder_path)
+
   def cleanUp(self,test_result):
     log = self.log
     log('Testnode.cleanUp')
     self.process_manager.killPreviousRun()
     self._cleanupLog()
+    self._cleanupTemporaryFiles()
 
   def run(self):
     log = self.log
@@ -494,3 +520,4 @@ branch = %(branch)s
       # Exceptions are swallowed during cleanup phas
       log("GENERAL EXCEPTION, QUITING")
       self.cleanUp(test_result)
+      log("GENERAL EXCEPTION, QUITING, cleanup finished")