mirror of
https://github.com/facebook/sapling.git
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a3f1d6ae64
Summary: Right now, if the client establishes connection to more than one peer, the last one to proces `clienttelemetry` wireproto command gets the honor to set `server_realhostname`. This is not desirable. Specifically, when we have `fallbackpath` set up for remotefilelog/treemanifest and the prefetch happens after pulling a commit, we get the hostname of the fallbackpath server, while losing the hostname of the original `getbundle` server. Reviewed By: DurhamG Differential Revision: D19837570 fbshipit-source-id: fdc41565a5dfe670df3caf3b034196c4b7bdf6d9
127 lines
3.7 KiB
Python
127 lines
3.7 KiB
Python
# Copyright (c) Facebook, Inc. and its affiliates.
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#
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# This software may be used and distributed according to the terms of the
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# GNU General Public License version 2.
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# clienttelemetry: provide information about the client in server telemetry
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"""provide information about the client in server telemetry
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[clienttelemetry]
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# whether or not to announce the remote hostname when connecting
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announceremotehostname = False
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"""
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from __future__ import absolute_import
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import socket
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import string
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from edenscm.mercurial import (
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blackbox,
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dispatch,
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extensions,
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hg,
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perftrace,
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util,
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wireproto,
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)
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from edenscm.mercurial.i18n import _
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from edenscm.mercurial.pycompat import decodeutf8
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# Client telemetry functions generate client telemetry data at connection time.
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_clienttelemetryfuncs = {}
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def clienttelemetryfunc(f):
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"""Decorator for registering client telemetry functions."""
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_clienttelemetryfuncs[f.__name__] = f
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return f
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@clienttelemetryfunc
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def hostname(ui):
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return socket.gethostname()
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_correlator = None
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@clienttelemetryfunc
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def correlator(ui):
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"""
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The correlator is a random string that is logged on both the client and
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server. This can be used to correlate the client logging to the server
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logging.
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"""
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global _correlator
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if _correlator is None:
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_correlator = util.makerandomidentifier()
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ui.log("clienttelemetry", client_correlator=_correlator)
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return _correlator
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# Client telemetry data is generated before connection and stored here.
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_clienttelemetrydata = {}
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def _clienttelemetry(repo, proto, args):
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"""Handle received client telemetry"""
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logargs = {"client_%s" % key: value for key, value in args.items()}
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repo.ui.log("clienttelemetry", **logargs)
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# Make them available to other extensions
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repo.clienttelemetry = logargs
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return socket.gethostname()
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def getclienttelemetry(repo):
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kwargs = {}
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if util.safehasattr(repo, "clienttelemetry"):
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clienttelemetry = repo.clienttelemetry
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fields = ["client_fullcommand", "client_hostname"]
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for f in fields:
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if f in clienttelemetry:
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kwargs[f] = clienttelemetry[f]
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return kwargs
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def _capabilities(orig, repo, proto):
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result = orig(repo, proto)
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result.append("clienttelemetry")
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return result
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def _runcommand(orig, lui, repo, cmd, fullargs, ui, options, d, cmdpats, cmdoptions):
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# Record the command that is running in the client telemetry data.
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_clienttelemetrydata["command"] = cmd
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fullcommand = dispatch._formatargs(fullargs)
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# Long invocations can occupy a lot of space in the logs.
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if len(fullcommand) > 256:
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fullcommand = fullcommand[:256] + " (truncated)"
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_clienttelemetrydata["fullcommand"] = fullcommand
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return orig(lui, repo, cmd, fullargs, ui, options, d, cmdpats, cmdoptions)
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def _peersetup(ui, peer):
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if peer.capable("clienttelemetry"):
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logargs = {name: f(ui) for name, f in _clienttelemetryfuncs.items()}
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logargs.update(_clienttelemetrydata)
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peername = decodeutf8(peer._call("clienttelemetry", **logargs))
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peer._realhostname = peername
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blackbox.log({"clienttelemetry": {"peername": peername}})
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ann = ui.configbool("clienttelemetry", "announceremotehostname", None)
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if ann is None:
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ann = not ui.plain() and ui._isatty(ui.ferr)
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if ann and not ui.quiet:
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ui.warn(_("connected to %s\n") % peername)
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perftrace.tracevalue("Server", peername)
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def uisetup(ui):
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wireproto.wireprotocommand("clienttelemetry", "*")(_clienttelemetry)
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extensions.wrapfunction(wireproto, "_capabilities", _capabilities)
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hg.wirepeersetupfuncs.append(_peersetup)
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extensions.wrapfunction(dispatch, "runcommand", _runcommand)
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