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#!/usr/bin/env python
#
# Copyright (C) 2012 Codethink Limited
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; version 2 of the License.
#
# 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
import cliapp
import logging
import os
import urllib
import shutil
from bottle import Bottle, request, response, run, static_file
from morphcacheserver.repocache import RepoCache
defaults = {
'repo-dir': '/var/cache/morph-cache-server/gits',
'bundle-dir': '/var/cache/morph-cache-server/bundles',
'artifact-dir': '/var/cache/morph-cache-server/artifacts',
'port': 8080,
}
class MorphCacheServer(cliapp.Application):
def add_settings(self):
self.settings.integer(['port'],
'port to listen on',
metavar='PORTNUM',
default=defaults['port'])
self.settings.string(['repo-dir'],
'path to the repository cache directory',
metavar='PATH',
default=defaults['repo-dir'])
self.settings.string(['bundle-dir'],
'path to the bundle cache directory',
metavar='PATH',
default=defaults['bundle-dir'])
self.settings.string(['artifact-dir'],
'path to the artifact cache directory',
metavar='PATH',
default=defaults['artifact-dir'])
self.settings.boolean(['direct-mode'],
'cache directories are directly managed')
self.settings.boolean(['enable-writes'],
'enable the write methods (fetch and delete)')
def process_args(self, args):
app = Bottle()
repo_cache = RepoCache(self,
self.settings['repo-dir'],
self.settings['bundle-dir'],
self.settings['direct-mode'])
def writable(prefix):
"""Selectively enable bottle prefixes.
prefix -- The path prefix we are enabling
If the runtime configuration setting --enable-writes is provided
then we return the app.get() decorator for the given path prefix
otherwise we return a lambda which passes the function through
undecorated.
This has the effect of being a runtime-enablable @app.get(...)
"""
if self.settings['enable-writes']:
return app.get(prefix)
return lambda fn: fn
@writable('/list')
def list():
response.set_header('Cache-Control', 'no-cache')
results = {}
files = {}
results["files"] = files
for artifactdir, __, filenames in \
os.walk(self.settings['artifact-dir']):
fsstinfo = os.statvfs(artifactdir)
results["freespace"] = fsstinfo.f_bsize * fsstinfo.f_bavail
for fname in filenames:
if not fname.startswith(".dl."):
try:
stinfo = os.stat("%s/%s" % (artifactdir, fname))
files[fname] = {
"atime": stinfo.st_atime,
"size": stinfo.st_size,
"used": stinfo.st_blocks * 512,
}
except Exception, e:
print(e)
return results
@writable('/fetch')
def fetch():
host = self._unescape_parameter(request.query.host)
artifact = self._unescape_parameter(request.query.artifact)
try:
response.set_header('Cache-Control', 'no-cache')
in_fh = urllib.urlopen("http://%s/artifacts?basename=%s" %
(host, urllib.quote(artifact)))
tmpname = "%s/.dl.%s" % (
self.settings['artifact-dir'],
artifact)
localtmp = open(tmpname, "w")
shutil.copyfileobj(in_fh, localtmp)
localtmp.close()
in_fh.close()
artifilename = "%s/%s" % (self.settings['artifact-dir'],
artifact)
os.rename(tmpname, artifilename)
stinfo = os.stat(artifilename)
ret = {}
ret[artifact] = {
"size": stinfo.st_size,
"used": stinfo.st_blocks * 512
}
return ret
except Exception, e:
response.status = 500
logging.debug('%s' % e)
@writable('/delete')
def delete():
artifact = self._unescape_parameter(request.query.artifact)
try:
os.unlink('%s/%s' % (self.settings['artifact-dir'],
artifact))
return { "status": 0, "reason": "success" }
except OSError, ose:
return { "status": ose.errno, "reason": ose.strerror }
except Exception, e:
response.status = 500
logging.debug('%s' % e)
@app.get('/sha1s')
def sha1():
repo = self._unescape_parameter(request.query.repo)
ref = self._unescape_parameter(request.query.ref)
try:
response.set_header('Cache-Control', 'no-cache')
sha1, tree = repo_cache.resolve_ref(repo, ref)
return {
'repo': '%s' % repo,
'ref': '%s' % ref,
'sha1': '%s' % sha1,
'tree': '%s' % tree
}
except Exception, e:
response.status = 404
logging.debug('%s' % e)
@app.get('/files')
def file():
repo = self._unescape_parameter(request.query.repo)
ref = self._unescape_parameter(request.query.ref)
filename = self._unescape_parameter(request.query.filename)
try:
content = repo_cache.cat_file(repo, ref, filename)
response.set_header('Content-Type', 'application/octet-stream')
return content
except Exception, e:
response.status = 404
logging.debug('%s' % e)
@app.get('/trees')
def tree():
repo = self._unescape_parameter(request.query.repo)
ref = self._unescape_parameter(request.query.ref)
path = self._unescape_parameter(request.query.path)
try:
tree = repo_cache.ls_tree(repo, ref, path)
return {
'repo': '%s' % repo,
'ref': '%s' % ref,
'tree': tree,
}
except Exception, e:
response.status = 404
logging.debug('%s' % e)
@app.get('/bundles')
def bundle():
repo = self._unescape_parameter(request.query.repo)
filename = repo_cache.get_bundle_filename(repo)
dirname = os.path.dirname(filename)
basename = os.path.basename(filename)
return static_file(basename, root=dirname, download=True)
@app.get('/artifacts')
def artifact():
basename = self._unescape_parameter(request.query.filename)
filename = os.path.join(self.settings['artifact-dir'], basename)
if os.path.exists(filename):
return static_file(basename,
root=self.settings['artifact-dir'],
download=True)
else:
response.status = 404
logging.debug('artifact %s does not exist' % basename)
root = Bottle()
root.mount(app, '/1.0')
run(root, host='0.0.0.0', port=self.settings['port'], reloader=True)
def _unescape_parameter(self, param):
return urllib.unquote(param)
if __name__ == '__main__':
MorphCacheServer().run()
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