Welcome to world

git-svn-id: https://redmine.imt-atlantique.fr/svn/xaal/code/Python/trunk@2068 b32b6428-25c9-4566-ad07-03861ab6144f

libs/lib/xaal/lib/helpers.py

+""" 
+This file contains some helpers functions. This functions aren't used in the lib itself
+but can be usefull for xaal packages developpers
+"""
+
+import logging
+import logging.handlers
+import os
+
+from . import config,Engine
+
+def singleton(class_):
+  instances = {}
+  def getinstance(*args, **kwargs):
+    if class_ not in instances:
+        instances[class_] = class_(*args, **kwargs)
+    return instances[class_]
+  return getinstance
+
+def setup_console_logger(name,level=config.log_level):
+    formatter = logging.Formatter('%(asctime)s [%(name)s] %(levelname)s: %(message)s',datefmt='%Y-%m-%d %H:%M:%S')
+    handler = logging.StreamHandler()
+    handler.setLevel(level)
+    handler.setFormatter(formatter)
+    # register the new handler
+    logger = logging.getLogger(name)
+    logger.root.addHandler(handler)
+
+def setup_file_logger(name,level=config.log_level,filename = None):
+    filename = filename or os.path.join(config.log_path,'%s.log' % name)
+    formatter = logging.Formatter('%(asctime)s - %(levelname)s - %(name)s - %(message)s')
+    handler = handler = logging.handlers.RotatingFileHandler(filename, 'a', 10000, 1, 'utf8')
+    handler.setLevel(level)
+    handler.setFormatter(formatter)
+    # register the new handler
+    logger = logging.getLogger(name)
+    logger.root.addHandler(handler)
+
+def run_package(pkg_name,pkg_setup,console_log = True,file_log=False):
+    if console_log:
+        logger = logging.getLogger(pkg_name).root.setLevel('DEBUG')
+        setup_console_logger(pkg_name,'DEBUG')
+    if file_log:
+        setup_file_logger(pkg_name)
+    eng = Engine()
+    logger = logging.getLogger(pkg_name)
+    logger.info('starting xaal package: %s'% pkg_name )
+    result = pkg_setup(eng)
+    try:
+        eng.run()
+    except KeyboardInterrupt:
+        logger.info("exit")