+date_width = 24
+def log_exc(msg="", name=None):
+ """Log traceback resulting from an exception."""
+ printout = ""
+ if name:
+ printout += "%s: "%name
+ printout += "EXCEPTION caught <%s> \n" % msg
+ for frame in traceback.format_exc().split("\n"):
+ printout += (date_width+2)*" " + "%s\n" % frame
+ log(printout)
+
+def log_trace(msg="", name=None):
+ """Log current stack"""
+ printout = ""
+ if name:
+ printout += "%s: " % name
+ printout += "LOGTRACE\n"
+ for frame in traceback.format_stack():
+ printout += "..." + frame
+ log(printout)
+
+
+########## snapshot data to a file
+# for some reason the various modules are still triggered even when the
+# data from PLC cannot be reached
+# we show this message instead of the exception stack instead in this case
+def log_missing_data(msg, key):
+ log("%s: could not find the %s key in data (PLC connection down?) - IGNORED"%(msg, key))
+
+def log_data_in_file(data, file, message="", level=LOG_NODE):
+ if level > LOG_LEVEL:
+ return
+ import pprint, time
+ try:
+ with open(file, 'w') as f:
+ now=time.strftime("Last update: %Y.%m.%d at %H:%M:%S %Z", time.localtime())
+ f.write(now+'\n')
+ if message: f.write('Message:'+message+'\n')
+ pp=pprint.PrettyPrinter(stream=f, indent=2)
+ pp.pprint(data)
+ f.close()
+ verbose("logger:.log_data_in_file Owerwrote %s"%file)
+ except:
+ log_exc('logger.log_data_in_file failed - file=%s - message=%r'%(file, message))
+
+def log_slivers(data):
+ log_data_in_file(data, LOG_SLIVERS, "raw GetSlivers")
+def log_database(db):
+ log_data_in_file(db, LOG_DATABASE, "raw database")
+