124 lines
2.9 KiB
Python
Executable file
124 lines
2.9 KiB
Python
Executable file
#!/usr/bin/python
|
|
|
|
# I wanted to keep this simple at first, so for now this checks out
|
|
# from the MASTER branch of a repo at a particular SHA or
|
|
# tag. Latest is not supported, you should not be doing
|
|
# that. Branch checkouts are not supported. Contribs
|
|
# welcome! -- MPD
|
|
|
|
try:
|
|
import json
|
|
except ImportError:
|
|
import simplejson as json
|
|
import os
|
|
import sys
|
|
import shlex
|
|
import subprocess
|
|
|
|
# ===========================================
|
|
# convert arguments of form ensure=running name=foo
|
|
# to a dictionary
|
|
# FIXME: make more idiomatic
|
|
|
|
args = " ".join(sys.argv[1:])
|
|
items = shlex.split(args)
|
|
params = {}
|
|
for x in items:
|
|
(k, v) = x.split("=")
|
|
params[k] = v
|
|
|
|
dest = params['dest']
|
|
repo = params['repo']
|
|
version = params['version']
|
|
|
|
# ===========================================
|
|
|
|
def get_version(dest):
|
|
''' samples the version of the git repo '''
|
|
os.chdir(dest)
|
|
cmd = "git show --abbrev-commit"
|
|
sha = os.popen(cmd).read().split("\n")
|
|
sha = sha[0].split()[1]
|
|
return sha
|
|
|
|
def clone(repo, dest):
|
|
''' makes a new git repo if it does not already exist '''
|
|
try:
|
|
os.makedirs(dest)
|
|
except:
|
|
pass
|
|
cmd = "git clone %s %s" % (repo, dest)
|
|
cmd = subprocess.Popen(cmd, shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
|
|
return cmd.communicate()
|
|
|
|
def pull(repo, dest):
|
|
''' updates repo from remote sources '''
|
|
os.chdir(dest)
|
|
cmd = "git pull -u origin"
|
|
cmd = subprocess.Popen(cmd, shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
|
|
return cmd.communicate()
|
|
|
|
def switchver(version, dest):
|
|
''' once pulled, switch to a particular SHA or tag '''
|
|
os.chdir(dest)
|
|
if version != 'HEAD':
|
|
cmd = "git checkout %s --force" % version
|
|
else:
|
|
# is there a better way to do this?
|
|
cmd = "git rebase origin"
|
|
cmd = subprocess.Popen(cmd, shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
|
|
(out, err) = cmd.communicate()
|
|
return (out, err)
|
|
|
|
|
|
gitconfig = os.path.join(dest, '.git', 'config')
|
|
|
|
out, err, status = (None, None, None)
|
|
|
|
# if there is no git configuration, do a clone operation
|
|
# else pull and switch the version
|
|
|
|
before = None
|
|
if not os.path.exists(gitconfig):
|
|
(out, err) = clone(repo, dest)
|
|
else:
|
|
# else do a pull
|
|
before = get_version(dest)
|
|
(out, err) = pull(repo, dest)
|
|
|
|
# handle errors from clone or pull
|
|
|
|
if out.find('error') != -1:
|
|
print json.dumps({
|
|
"failed" : True,
|
|
"out" : out,
|
|
"err" : err
|
|
})
|
|
sys.exit(1)
|
|
|
|
# switch to version specified regardless of whether
|
|
# we cloned or pulled
|
|
|
|
(out, err) = switchver(version, dest)
|
|
if err.find('error') != -1:
|
|
print json.dumps({
|
|
"failed" : True,
|
|
"out" : out,
|
|
"err" : err
|
|
})
|
|
sys.exit(1)
|
|
|
|
# determine if we changed anything
|
|
|
|
after = get_version(dest)
|
|
changed = False
|
|
|
|
if before != after:
|
|
changed = True
|
|
|
|
print json.dumps({
|
|
"changed" : changed,
|
|
"before" : before,
|
|
"after" : after
|
|
})
|
|
|