Mercurial > public > mercurial-scm > hg-stable
diff mercurial/commandserver.py @ 28511:ff5f923fca3c
cmdserver: write early exception to 'e' channel in 'unix' mode
In 'unix' mode, the server is typically detached from the console. Therefore
a client couldn't see the exception that occurred while instantiating the
server object.
This patch tries to catch the early error and send it to 'e' channel even if
the server isn't instantiated yet. This means the error may be sent before the
initial hello message. So it's up to the client implementation whether to
handle the early error message or error out as protocol violation.
The error handling code is also copied to chgserver.py. I'll factor out them
later if we manage to get chg passes the test suite.
| author | Yuya Nishihara <yuya@tcha.org> |
|---|---|
| date | Sat, 12 Mar 2016 22:03:30 +0900 |
| parents | e7c9b59dbbcf |
| children | d269e7db2f55 |
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--- a/mercurial/commandserver.py Sun Mar 13 01:32:42 2016 +0530 +++ b/mercurial/commandserver.py Sat Mar 12 22:03:30 2016 +0900 @@ -338,8 +338,9 @@ def handle(self): ui = self.server.ui repo = self.server.repo - sv = server(ui, repo, self.rfile, self.wfile) + sv = None try: + sv = server(ui, repo, self.rfile, self.wfile) try: sv.serve() # handle exceptions that may be raised by command server. most of @@ -354,7 +355,11 @@ except: # re-raises # also write traceback to error channel. otherwise client cannot # see it because it is written to server's stderr by default. - traceback.print_exc(file=sv.cerr) + if sv: + cerr = sv.cerr + else: + cerr = channeledoutput(self.wfile, 'e') + traceback.print_exc(file=cerr) raise class unixservice(object):