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https://github.com/SchildiChat/element-web.git
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Merge pull request #2969 from vector-im/rav/keep_old_bundles
Update redeploy script to keep old bundles
This commit is contained in:
commit
641a5c244c
@ -1,13 +1,32 @@
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#!/usr/bin/env python
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#
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# auto-deploy script for https://riot.im/develop
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#
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# Listens for HTTP hits. When it gets one, downloads the artifact from jenkins
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# and deploys it as the new version.
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#
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# Requires the following python packages:
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#
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# - requests
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# - flask
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#
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from __future__ import print_function
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import json, requests, tarfile, argparse, os, errno
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import time
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from urlparse import urljoin
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from flask import Flask, jsonify, request, abort
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app = Flask(__name__)
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arg_jenkins_url, arg_extract_path, arg_should_clean, arg_symlink, arg_config_location = (
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None, None, None, None, None
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)
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arg_jenkins_url = None
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arg_extract_path = None
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arg_bundles_path = None
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arg_should_clean = None
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arg_symlink = None
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arg_config_location = None
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class DeployException(Exception):
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pass
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def download_file(url):
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local_filename = url.split('/')[-1]
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@ -57,6 +76,9 @@ def on_receive_jenkins_poke():
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abort(400, "Missing or bad build number")
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return
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return fetch_jenkins_build(job_name, build_num)
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def fetch_jenkins_build(job_name, build_num):
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artifact_url = urljoin(
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arg_jenkins_url, "job/%s/%s/api/json" % (job_name, build_num)
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)
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@ -106,7 +128,31 @@ def on_receive_jenkins_poke():
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arg_jenkins_url, "job/%s/%s/artifact/%s" % (job_name, build_num, tar_gz_path)
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)
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print("Retrieving .tar.gz file: %s" % tar_gz_url)
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# we extract into a directory based on the build number. This avoids the
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# problem of multiple builds building the same git version and thus having
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# the same tarball name. That would lead to two potential problems:
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# (a) sometimes jenkins serves corrupted artifacts; we would replace
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# a good deploy with a bad one
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# (b) we'll be overwriting the live deployment, which means people might
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# see half-written files.
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build_dir = os.path.join(arg_extract_path, "%s-#%s" % (job_name, build_num))
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try:
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deploy_tarball(tar_gz_url, build_dir)
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except DeployException as e:
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abort(400, e.message)
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return jsonify({})
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def deploy_tarball(tar_gz_url, build_dir):
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"""Download a tarball from jenkins and deploy it as the new version
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"""
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print("Deploying %s to %s" % (tar_gz_url, build_dir))
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if os.path.exists(build_dir):
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raise DeployException(
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"Not deploying. We have previously deployed this build."
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)
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os.mkdir(build_dir)
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# we rely on the fact that flask only serves one request at a time to
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# ensure that we do not overwrite a tarball from a concurrent request.
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@ -114,19 +160,6 @@ def on_receive_jenkins_poke():
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print("Downloaded file: %s" % filename)
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try:
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# we extract into a directory based on the build number. This avoids the
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# problem of multiple builds building the same git version and thus having
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# the same tarball name. That would lead to two potential problems:
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# (a) sometimes jenkins serves corrupted artifacts; we would replace
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# a good deploy with a bad one
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# (b) we'll be overwriting the live deployment, which means people might
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# see half-written files.
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build_dir = os.path.join(arg_extract_path, "%s-#%s" % (job_name, build_num))
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if os.path.exists(build_dir):
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abort(400, "Not deploying. We have previously deployed this build.")
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return
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os.mkdir(build_dir)
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untar_to(filename, build_dir)
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print("Extracted to: %s" % build_dir)
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finally:
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@ -139,9 +172,47 @@ def on_receive_jenkins_poke():
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if arg_config_location:
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create_symlink(source=arg_config_location, linkname=os.path.join(extracted_dir, 'config.json'))
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if arg_bundles_path:
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extracted_bundles = os.path.join(extracted_dir, 'bundles')
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move_bundles(source=extracted_bundles, dest=arg_bundles_path)
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# replace the (hopefully now empty) extracted_bundles dir with a
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# symlink to the common dir.
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relpath = os.path.relpath(arg_bundles_path, extracted_dir)
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os.rmdir(extracted_bundles)
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print ("Symlink %s -> %s" % (extracted_bundles, relpath))
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os.symlink(relpath, extracted_bundles)
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create_symlink(source=extracted_dir, linkname=arg_symlink)
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return jsonify({})
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def move_bundles(source, dest):
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"""Move the contents of the 'bundles' directory to a common dir
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We check that we will not be overwriting anything before we proceed.
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Args:
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source (str): path to 'bundles' within the extracted tarball
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dest (str): target common directory
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"""
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if not os.path.isdir(dest):
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os.mkdir(dest)
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# build a map from source to destination, checking for non-existence as we go.
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renames = {}
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for f in os.listdir(source):
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dst = os.path.join(dest, f)
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if os.path.exists(dst):
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raise DeployException(
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"Not deploying. The bundle includes '%s' which we have previously deployed."
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% f
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)
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renames[os.path.join(source, f)] = dst
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for (src, dst) in renames.iteritems():
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print ("Move %s -> %s" % (src, dst))
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os.rename(src, dst)
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if __name__ == "__main__":
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parser = argparse.ArgumentParser("Runs a Vector redeployment server.")
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@ -161,6 +232,13 @@ if __name__ == "__main__":
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"The location to extract .tar.gz files to."
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)
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)
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parser.add_argument(
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"-b", "--bundles-dir", dest="bundles_dir", help=(
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"A directory to move the contents of the 'bundles' directory to. A \
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symlink to the bundles directory will also be written inside the \
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extracted tarball. Example: './bundles'."
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)
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)
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parser.add_argument(
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"-c", "--clean", dest="clean", action="store_true", default=False, help=(
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"Remove .tar.gz files after they have been downloaded and extracted."
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@ -179,18 +257,34 @@ if __name__ == "__main__":
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To this location."
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)
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)
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parser.add_argument(
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"--test", dest="tarball_uri", help=(
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"Don't start an HTTP listener. Instead download a build from Jenkins \
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immediately."
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),
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)
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args = parser.parse_args()
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if args.jenkins.endswith("/"): # important for urljoin
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arg_jenkins_url = args.jenkins
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else:
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arg_jenkins_url = args.jenkins + "/"
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arg_extract_path = args.extract
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arg_bundles_path = args.bundles_dir
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arg_should_clean = args.clean
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arg_symlink = args.symlink
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arg_config_location = args.config
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print(
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"Listening on port %s. Extracting to %s%s. Symlinking to %s. Jenkins URL: %s. Config location: %s" %
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(args.port, arg_extract_path,
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" (clean after)" if arg_should_clean else "", arg_symlink, arg_jenkins_url, arg_config_location)
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)
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app.run(host="0.0.0.0", port=args.port, debug=True)
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if not os.path.isdir(arg_extract_path):
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os.mkdir(arg_extract_path)
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if args.tarball_uri is not None:
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build_dir = os.path.join(arg_extract_path, "test-%i" % (time.time()))
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deploy_tarball(args.tarball_uri, build_dir)
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else:
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print(
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"Listening on port %s. Extracting to %s%s. Symlinking to %s. Jenkins URL: %s. Config location: %s" %
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(args.port, arg_extract_path,
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" (clean after)" if arg_should_clean else "", arg_symlink, arg_jenkins_url, arg_config_location)
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)
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app.run(host="0.0.0.0", port=args.port, debug=True)
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