c9582a0468
The problem this solves is that yum really isn't designed to be part of\ a long running daemon. So when repodata changes upstream, even when you force it to download the new metadata, it doesn't change in memory so you end up with lorax-composer depsolving against old versions, and anaconda depsolving against new versions (because it sets up its own YumBase and cache) and then the kickstart is no longer valid. To solve this I have - Added a 6h timeout to the metadata check (because yum's doesn't work in this situation). - Added a metadata check to the YumLock .lock property, but only when the timeout expires. - Added a new .lock_check property to YumLock that always checks the metadata and resets the timeout. If it has changed it does its best to tear down the existing YumBase, deleting as much as it can in hopes it doesn't leak memory. And then it sets up a totally new YumBase with the new repodata. Resolves: rhbz#1632962
83 lines
2.5 KiB
Python
83 lines
2.5 KiB
Python
#
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# Copyright (C) 2017 Red Hat, Inc.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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import logging
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log = logging.getLogger("lorax-composer")
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from collections import namedtuple
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from flask import Flask, jsonify, redirect, send_from_directory
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from glob import glob
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import os
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from pylorax.api import vernum
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from pylorax.api.crossdomain import crossdomain
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from pylorax.api.v0 import v0_api
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from pylorax.sysutils import joinpaths
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GitLock = namedtuple("GitLock", ["repo", "lock", "dir"])
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server = Flask(__name__)
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__all__ = ["server", "GitLock"]
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@server.route('/')
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def server_root():
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redirect("/api/docs/")
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@server.route("/api/docs/")
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@server.route("/api/docs/<path:path>")
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def api_docs(path=None):
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# Find the html docs
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try:
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# This assumes it is running from the source tree
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docs_path = os.path.abspath(joinpaths(os.path.dirname(__file__), "../../../docs/html"))
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except IndexError:
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docs_path = glob("/usr/share/doc/lorax-*/html/")[0]
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if not path:
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path="index.html"
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return send_from_directory(docs_path, path)
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@server.route("/api/status")
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@crossdomain(origin="*")
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def v0_status():
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"""
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`/api/v0/status`
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^^^^^^^^^^^^^^^^
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Return the status of the API Server::
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{ "api": "0",
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"build": "devel",
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"db_supported": true,
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"db_version": "0",
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"schema_version": "0",
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"backend": "lorax-composer",
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"msgs": []}
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The 'msgs' field can be a list of strings describing startup problems or status that
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should be displayed to the user. eg. if the compose templates are not depsolving properly
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the errors will be in 'msgs'.
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"""
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return jsonify(backend="lorax-composer",
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build=vernum,
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api="0",
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db_version="0",
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schema_version="0",
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db_supported=True,
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msgs=server.config["TEMPLATE_ERRORS"])
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v0_api(server)
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