Add logsettings to CMS

cms/envs/logsettings.py

+import os
+import os.path
+import platform
+import sys
+
+def get_logger_config(log_dir, 
+                      logging_env="no_env", 
+                      tracking_filename=None,
+                      syslog_addr=None,
+                      debug=False):
+    """Return the appropriate logging config dictionary. You should assign the
+    result of this to the LOGGING var in your settings. The reason it's done 
+    this way instead of registering directly is because I didn't want to worry
+    about resetting the logging state if this is called multiple times when 
+    settings are extended."""
+
+    # If we're given an explicit place to put tracking logs, we do that (say for
+    # debugging). However, logging is not safe for multiple processes hitting 
+    # the same file. So if it's left blank, we dynamically create the filename
+    # based on the PID of this worker process.
+    if tracking_filename:
+        tracking_file_loc = os.path.join(log_dir, tracking_filename)
+    else:
+        pid = os.getpid() # So we can log which process is creating the log
+        tracking_file_loc = os.path.join(log_dir, "tracking_{0}.log".format(pid))
+
+    hostname = platform.node().split(".")[0]
+    syslog_format = ("[%(name)s][env:{logging_env}] %(levelname)s [{hostname} " +
+                     " %(process)d] [%(filename)s:%(lineno)d] - %(message)s").format(
+                        logging_env=logging_env, hostname=hostname)
+
+    handlers = ['console'] if debug else ['console', 'syslogger', 'newrelic']
+
+    return {
+        'version': 1,
+        'disable_existing_loggers': True,
+        'formatters' : {
+            'standard' : {
+                'format' : '%(asctime)s %(levelname)s %(process)d [%(name)s] %(filename)s:%(lineno)d - %(message)s',
+            },
+            'syslog_format' : { 'format' : syslog_format },
+            'raw' : { 'format' : '%(message)s' },
+        },
+        'handlers' : {
+            'console' : {
+                'level' : 'DEBUG' if debug else 'INFO',
+                'class' : 'logging.StreamHandler',
+                'formatter' : 'standard',
+                'stream' : sys.stdout,
+            },
+            'syslogger' : {
+                'level' : 'INFO',
+                'class' : 'logging.handlers.SysLogHandler',
+                'address' : syslog_addr,
+                'formatter' : 'syslog_format',
+            },
+            'tracking' : {
+                'level' : 'DEBUG',
+                'class' : 'logging.handlers.WatchedFileHandler',
+                'filename' : tracking_file_loc,
+                'formatter' : 'raw',
+            },
+            'newrelic' : {
+                'level': 'ERROR',
+                'class': 'newrelic_logging.NewRelicHandler',
+                'formatter': 'raw',
+            }
+        },
+        'loggers' : {
+            'django' : {
+                'handlers' : handlers,
+                'propagate' : True,
+                'level' : 'INFO'
+            },
+            'tracking' : {
+                'handlers' : ['tracking'],
+                'level' : 'DEBUG',
+                'propagate' : False,
+            },
+            '' : {
+                'handlers' : handlers,
+                'level' : 'DEBUG',
+                'propagate' : False
+            },
+            'mitx' : {
+                'handlers' : handlers,
+                'level' : 'DEBUG',
+                'propagate' : False
+            },
+            'keyedcache' : {
+                'handlers' : handlers,
+                'level' : 'DEBUG',
+                'propagate' : False
+            },
+        }
+    }