Deployment script
Factor some bits out of redeploy.py, so that they can be used in a deployment script suitable for riot.im/app.
This commit is contained in:
Richard van der Hoff
parent
641a5c244c
commit
5206410f21
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@ -0,0 +1,158 @@
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#!/usr/bin/env python
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#
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# download and unpack a riot-web tarball.
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#
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# Allows `bundles` to be extracted to a common directory, and a link to
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# config.json to be added.
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from __future__ import print_function
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import argparse
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import os
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import os.path
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import tarfile
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import urllib
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class DeployException(Exception):
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pass
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def create_relative_symlink(linkname, target):
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relpath = os.path.relpath(target, os.path.dirname(linkname))
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print ("Symlink %s -> %s" % (linkname, relpath))
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os.symlink(relpath, linkname)
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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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class Deployer:
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def __init__(self):
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self.packages_path = "."
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self.bundles_path = None
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self.should_clean = False
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self.config_location = None
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def deploy(self, tarball, extract_path):
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"""Download a tarball if necessary, and unpack it
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Returns:
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(str) the path to the unpacked deployment
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"""
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print("Deploying %s to %s" % (tarball, extract_path))
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downloaded = False
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if tarball.startswith("http://") or tarball.startswith("https://"):
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tarball = self.download_file(tarball)
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print("Downloaded file: %s" % tarball)
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downloaded = True
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try:
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with tarfile.open(tarball) as tar:
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tar.extractall(extract_path)
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finally:
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if self.should_clean and downloaded:
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os.remove(tarball)
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name_str = os.path.basename(tarball).replace(".tar.gz", "")
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extracted_dir = os.path.join(extract_path, name_str)
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print ("Extracted into: %s" % extracted_dir)
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if self.config_location:
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create_relative_symlink(
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target=self.config_location,
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linkname=os.path.join(extracted_dir, 'config.json')
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)
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if self.bundles_path:
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extracted_bundles = os.path.join(extracted_dir, 'bundles')
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move_bundles(source=extracted_bundles, dest=self.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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os.rmdir(extracted_bundles)
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create_relative_symlink(
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target=self.bundles_path,
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linkname=extracted_bundles,
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)
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return extracted_dir
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def download_file(self, url):
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if not os.path.isdir(self.packages_path):
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os.mkdir(self.packages_path)
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local_filename = os.path.join(self.packages_path,
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url.split('/')[-1])
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urllib.urlretrieve(url, local_filename)
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return local_filename
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if __name__ == "__main__":
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parser = argparse.ArgumentParser("Deploy a Riot build on a web server.")
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parser.add_argument(
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"-p", "--packages-dir", default="./packages", help=(
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"The directory to download the tarball into. (Default: '%(default)s')"
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)
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)
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parser.add_argument(
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"-e", "--extract-path", default="./deploys", help=(
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"The location to extract .tar.gz files to. (Default: '%(default)s')"
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)
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)
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parser.add_argument(
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"-b", "--bundles-dir", nargs='?', default="./bundles", 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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(Default: '%(default)s')"
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)
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)
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parser.add_argument(
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"-c", "--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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(Default: %(default)s)"
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)
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)
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parser.add_argument(
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"--config", nargs='?', default='./config.json', help=(
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"Write a symlink at config.json in the extracted tarball to this \
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location. (Default: '%(default)s')"
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)
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)
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parser.add_argument(
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"tarball", help=(
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"filename of tarball, or URL to download."
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),
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)
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args = parser.parse_args()
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deployer = Deployer()
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deployer.packages_path = args.packages_dir
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deployer.bundles_path = args.bundles_dir
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deployer.should_clean = args.clean
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deployer.config_location = args.config
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deployer.deploy(args.tarball, args.extract_path)
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@ -14,32 +14,17 @@ 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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from deploy import Deployer, DeployException
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app = Flask(__name__)
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arg_jenkins_url = None
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deployer = 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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r = requests.get(url, stream=True)
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with open(local_filename, 'wb') as f:
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for chunk in r.iter_content(chunk_size=1024):
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if chunk: # filter out keep-alive new chunks
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f.write(chunk)
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return local_filename
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def untar_to(tarball, dest):
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with tarfile.open(tarball) as tar:
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tar.extractall(dest)
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def create_symlink(source, linkname):
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try:
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@ -137,17 +122,20 @@ def fetch_jenkins_build(job_name, build_num):
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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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extracted_dir = 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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create_symlink(source=extracted_dir, linkname=arg_symlink)
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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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"""Download a tarball from jenkins and unpack it
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Returns:
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(str) the path to the unpacked deployment
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"""
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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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@ -156,62 +144,8 @@ def deploy_tarball(tar_gz_url, 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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filename = download_file(tar_gz_url)
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print("Downloaded file: %s" % filename)
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try:
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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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if arg_should_clean:
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os.remove(filename)
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name_str = filename.replace(".tar.gz", "")
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extracted_dir = os.path.join(build_dir, name_str)
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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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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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return deployer.deploy(tar_gz_url, build_dir)
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if __name__ == "__main__":
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@ -270,21 +204,28 @@ if __name__ == "__main__":
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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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if not os.path.isdir(arg_extract_path):
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os.mkdir(arg_extract_path)
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deployer = Deployer()
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deployer.bundles_path = args.bundles_dir
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deployer.should_clean = args.clean
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deployer.config_location = args.config
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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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(args.port,
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arg_extract_path,
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" (clean after)" if deployer.should_clean else "",
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arg_symlink,
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arg_jenkins_url,
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deployer.config_location,
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)
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)
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app.run(host="0.0.0.0", port=args.port, debug=True)
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