From 249e9f792c4c6e52058570e83b550ec8310f621e Mon Sep 17 00:00:00 2001 From: Jose Ricardo Ziviani Date: Mon, 29 May 2017 13:30:04 -0300 Subject: simpletrace: Improve the error message if event is not declared MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Today, if we use a trace-event file which does not declare an event existing in the log file we'll get the following error: $ scripts/simpletrace.py trace-events trace-68508 Traceback (most recent call last): File "scripts/simpletrace.py", line 242, in run(Formatter()) File "scripts/simpletrace.py", line 217, in run process(events, sys.argv[2], analyzer, read_header=read_header) File "scripts/simpletrace.py", line 192, in process for rec in read_trace_records(edict, log): File "scripts/simpletrace.py", line 107, in read_trace_records rec = read_record(edict, idtoname, fobj) File "scripts/simpletrace.py", line 71, in read_record return get_record(edict, idtoname, rechdr, fobj) File "scripts/simpletrace.py", line 45, in get_record event = edict[name] KeyError: 'qemu_mutex_locked' This patch improves this error by adding a hint instead of just that KeyError log: $ scripts/simpletrace.py trace-events trace-68508 'qemu_mutex_locked' event is logged but is not declared in the trace events file, try using trace-events-all instead. Signed-off-by: Jose Ricardo Ziviani Reviewed-by: Philippe Mathieu-Daudé Message-id: 1496075404-8845-1-git-send-email-joserz@linux.vnet.ibm.com Signed-off-by: Stefan Hajnoczi --- scripts/simpletrace.py | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) (limited to 'scripts') diff --git a/scripts/simpletrace.py b/scripts/simpletrace.py index d60b3a0..f1be6e4 100755 --- a/scripts/simpletrace.py +++ b/scripts/simpletrace.py @@ -42,7 +42,15 @@ def get_record(edict, idtoname, rechdr, fobj): event_id = rechdr[0] name = idtoname[event_id] rec = (name, rechdr[1], rechdr[3]) - event = edict[name] + try: + event = edict[name] + except KeyError, e: + import sys + sys.stderr.write('%s event is logged but is not declared ' \ + 'in the trace events file, try using ' \ + 'trace-events-all instead.\n' % str(e)) + sys.exit(1) + for type, name in event.args: if is_string(type): l = fobj.read(4) -- cgit v1.1