Mercurial > libervia-backend
view libervia/backend/plugins/plugin_merge_req_mercurial.py @ 4306:94e0968987cd
plugin XEP-0033: code modernisation, improve delivery, data validation:
- Code has been rewritten using Pydantic models and `async` coroutines for data validation
and cleaner element parsing/generation.
- Delivery has been completely rewritten. It now works even if server doesn't support
multicast, and send to local multicast service first. Delivering to local multicast
service first is due to bad support of XEP-0033 in server (notably Prosody which has an
incomplete implementation), and the current impossibility to detect if a sub-domain
service handles fully multicast or only for local domains. This is a workaround to have
a good balance between backward compatilibity and use of bandwith, and to make it work
with the incoming email gateway implementation (the gateway will only deliver to
entities of its own domain).
- disco feature checking now uses `async` corountines. `host` implementation still use
Deferred return values for compatibility with legacy code.
rel 450
author | Goffi <goffi@goffi.org> |
---|---|
date | Thu, 26 Sep 2024 16:12:01 +0200 |
parents | 0d7bb4df2343 |
children |
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#!/usr/bin/env python3 # SàT plugin managing Mercurial VCS # Copyright (C) 2009-2021 Jérôme Poisson (goffi@goffi.org) # This program is free software: you can redistribute it and/or modify # it under the terms of the GNU Affero General Public License as published by # the Free Software Foundation, either version 3 of the License, or # (at your option) any later version. # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU Affero General Public License for more details. # You should have received a copy of the GNU Affero General Public License # along with this program. If not, see <http://www.gnu.org/licenses/>. import re from twisted.python.procutils import which from libervia.backend.tools.common import async_process from libervia.backend.tools import utils from libervia.backend.core.i18n import _, D_ from libervia.backend.core.constants import Const as C from libervia.backend.core import exceptions from libervia.backend.core.log import getLogger log = getLogger(__name__) PLUGIN_INFO = { C.PI_NAME: "Mercurial Merge Request handler", C.PI_IMPORT_NAME: "MERGE_REQUEST_MERCURIAL", C.PI_TYPE: C.PLUG_TYPE_MISC, C.PI_DEPENDENCIES: ["MERGE_REQUESTS"], C.PI_MAIN: "MercurialHandler", C.PI_HANDLER: "no", C.PI_DESCRIPTION: _("""Merge request handler for Mercurial"""), } SHORT_DESC = D_("handle Mercurial repository") CLEAN_RE = re.compile(r"[^\w -._]", flags=re.UNICODE) class MercurialProtocol(async_process.CommandProtocol): """handle hg commands""" name = "Mercurial" command = None @classmethod def run(cls, path, command, *args, **kwargs): """Create a new MercurialRegisterProtocol and execute the given mercurial command. @param path(unicode): path to the repository @param command(unicode): hg command to run @return D(bytes): stdout of the command """ assert "path" not in kwargs kwargs["path"] = path # FIXME: we have to use this workaround because Twisted's protocol.ProcessProtocol # is not using new style classes. This can be removed once moved to # Python 3 (super can be used normally then). d = async_process.CommandProtocol.run.__func__(cls, command, *args, **kwargs) d.addErrback(utils.logError) return d class MercurialHandler(object): data_types = ("mercurial_changeset",) def __init__(self, host): log.info(_("Mercurial merge request handler initialization")) try: MercurialProtocol.command = which("hg")[0] except IndexError: raise exceptions.NotFound( _("Mercurial executable (hg) not found, " "can't use Mercurial handler") ) self.host = host self._m = host.plugins["MERGE_REQUESTS"] self._m.register("mercurial", self, self.data_types, SHORT_DESC) def check(self, repository): d = MercurialProtocol.run(repository, "identify") d.addCallback(lambda __: True) d.addErrback(lambda __: False) return d def export(self, repository): d = MercurialProtocol.run( repository, "export", "-g", "-r", "outgoing() and ancestors(.)", "--encoding=utf-8", ) d.addCallback(lambda data: data.decode("utf-8")) return d def import_(self, repository, data, data_type, item_id, service, node, extra): parsed_data = self.parse(data) try: parsed_name = parsed_data[0]["commit_msg"].split("\n")[0] parsed_name = CLEAN_RE.sub("", parsed_name)[:40] except Exception: parsed_name = "" name = "mr_{item_id}_{parsed_name}".format( item_id=CLEAN_RE.sub("", item_id), parsed_name=parsed_name ) return MercurialProtocol.run( repository, "qimport", "-g", "--name", name, "--encoding=utf-8", "-", stdin=data, ) def parse(self, data, data_type=None): lines = data.splitlines() total_lines = len(lines) patches = [] while lines: patch = {} commit_msg = [] diff = [] state = "init" if lines[0] != "# HG changeset patch": raise exceptions.DataError(_("invalid changeset signature")) # line index of this patch in the whole data patch_idx = total_lines - len(lines) del lines[0] for idx, line in enumerate(lines): if state == "init": if line.startswith("# "): if line.startswith("# User "): elems = line[7:].split() if not elems: continue last = elems[-1] if ( last.startswith("<") and last.endswith(">") and "@" in last ): patch[self._m.META_EMAIL] = elems.pop()[1:-1] patch[self._m.META_AUTHOR] = " ".join(elems) elif line.startswith("# Date "): time_data = line[7:].split() if len(time_data) != 2: log.warning( _("unexpected time data: {data}").format( data=line[7:] ) ) continue patch[self._m.META_TIMESTAMP] = int(time_data[0]) + int( time_data[1] ) elif line.startswith("# Node ID "): patch[self._m.META_HASH] = line[10:] elif line.startswith("# Parent "): patch[self._m.META_PARENT_HASH] = line[10:] else: state = "commit_msg" if state == "commit_msg": if line.startswith("diff --git a/"): state = "diff" patch[self._m.META_DIFF_IDX] = patch_idx + idx + 1 else: commit_msg.append(line) if state == "diff": if line.startswith("# ") or idx == len(lines) - 1: # a new patch is starting or we have reached end of patches if idx == len(lines) - 1: # end of patches, we need to keep the line diff.append(line) patch[self._m.META_COMMIT_MSG] = "\n".join(commit_msg) patch[self._m.META_DIFF] = "\n".join(diff) patches.append(patch) if idx == len(lines) - 1: del lines[:] else: del lines[:idx] break else: diff.append(line) return patches