view sat/plugins/plugin_misc_uri_finder.py @ 3153:2c7b42f53e9a

core (xmpp): avoid starting several clients at the same time: a check is done to avoid running startConnection several times at once, which would lead to the creation of several SatXMPPEntity instances at the same time, resulting in many issues. If startConnection is called while a previous one is not finished yet, a CancelError is now raised.
author Goffi <goffi@goffi.org>
date Mon, 03 Feb 2020 13:46:24 +0100
parents 559a625a236b
children be6d91572633
line wrap: on
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#!/usr/bin/env python3


# SAT plugin to find URIs
# Copyright (C) 2009-2020 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/>.

from sat.core.i18n import _
from sat.core.constants import Const as C
from sat.core.log import getLogger
from twisted.internet import defer
import textwrap
log = getLogger(__name__)
import json
import os.path
import os
import re

PLUGIN_INFO = {
    C.PI_NAME: _("URI finder"),
    C.PI_IMPORT_NAME: "uri_finder",
    C.PI_TYPE: "EXP",
    C.PI_PROTOCOLS: [],
    C.PI_DEPENDENCIES: [],
    C.PI_MAIN: "URIFinder",
    C.PI_HANDLER: "no",
    C.PI_DESCRIPTION: textwrap.dedent(_("""\
    Plugin to find URIs in well know location.
    This allows to retrieve settings to work with a project (e.g. pubsub node used for merge-requests).
    """))
}


SEARCH_FILES = ('readme', 'contributing')


class URIFinder(object):

    def __init__(self, host):
        log.info(_("URI finder plugin initialization"))
        self.host = host
        host.bridge.addMethod("URIFind", ".plugin",
                              in_sign='sas', out_sign='a{sa{ss}}',
                              method=self.find,
                              async_=True)

    def find(self, path, keys):
        """Look for URI in well known locations

        @param path(unicode): path to start with
        @param keys(list[unicode]): keys lookeds after
            e.g.: "tickets", "merge-requests"
        @return (dict[unicode, unicode]): map from key to found uri
        """
        keys_re = '|'.join(keys)
        label_re = r'"(?P<label>[^"]+)"'
        uri_re = re.compile(r'(?P<key>{keys_re})[ :]? +(?P<uri>xmpp:\S+)(?:.*use {label_re} label)?'.format(
            keys_re=keys_re, label_re = label_re))
        path = os.path.normpath(path)
        if not os.path.isdir(path) or not os.path.isabs(path):
            raise ValueError('path must be an absolute path to a directory')

        found_uris = {}
        while path != '/':
            for filename in os.listdir(path):
                name, __ = os.path.splitext(filename)
                if name.lower() in SEARCH_FILES:
                    file_path = os.path.join(path, filename)
                    with open(file_path) as f:
                        for m in uri_re.finditer(f.read()):
                            key = m.group('key')
                            uri = m.group('uri')
                            label = m.group('label')
                            if key in found_uris:
                                log.warning(_("Ignoring already found uri for key \"{key}\"").format(key=key))
                            else:
                                uri_data = found_uris[key] = {'uri': uri}
                                if label is not None:
                                    uri_data['labels'] = json.dumps([label])
            if found_uris:
                break
            path = os.path.dirname(path)

        return defer.succeed(found_uris)