cleaned up apt module style
This commit is contained in:
Matthew Williams
parent
71b503b0c3
commit
b4604b2525
1 changed files with 77 additions and 79 deletions
138
apt
138
apt
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@ -17,20 +17,34 @@
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# along with this software. If not, see <http://www.gnu.org/licenses/>.
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#
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try:
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import json
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except ImportError:
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import simplejson as json
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import os
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import sys
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import apt
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import shlex
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import subprocess
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import traceback
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APT = "/usr/bin/apt-get"
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try:
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import json
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except ImportError:
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import simplejson as json
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def debug(msg):
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# ansible ignores stderr, so it's safe to use for debug
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print >>sys.stderr, msg
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#pass
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def exit_json(rc=0, **kwargs):
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print json.dumps(kwargs)
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sys.exit(rc)
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def fail_json(**kwargs):
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kwargs['failed'] = True
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exit_json(rc=1, **kwargs)
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def run_apt(command):
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debug(command)
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try:
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cmd = subprocess.Popen(command, shell=True,
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stdout=subprocess.PIPE, stderr=subprocess.PIPE)
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@ -51,102 +65,86 @@ def run_apt(command):
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else:
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rc = cmd.returncode
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debug(err)
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return rc, out, err
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def ensure(state, pkgspec):
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def get_cache():
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# TODO: Only update the cache if it's old.
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cache = apt.Cache()
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cache.update()
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cache.open(None)
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return cache
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def package_installed(pkgspec):
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cache = get_cache()
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try:
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pkg = cache[pkgspec]
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except:
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msg = "No package matching '%s' is available" % pkgsepc
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return {'changed': False, 'failed': True, 'msg': msg}
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if state == 'installed':
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#check if package is installed
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if pkg.is_installed:
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return {'changed': False, 'failed': False}
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cmd = "apt-get -q -y install '%s'" % pkgspec
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rc, out, err = run_apt(cmd)
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#pkg.mark_install()
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#cache.commit(apt.progress.base.OpProgress())
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fail_json(msg="No package matching '%s' is available" % pkgspec)
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return bool(pkg.is_installed)
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elif state == 'removed':
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#check if package is installed
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if not pkg.is_installed:
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return {'changed': False, 'failed': False}
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cmd = "apt-get -q -y remove '%s'" % pkgspec
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rc, out, err = run_apt(cmd)
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#pkg.mark_delete()
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#cache.commit(apt.progress.base.OpProgress())
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def install(pkgspec):
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installed = package_installed(pkgspec)
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debug("installed: %d" % installed)
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if installed:
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return False
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else:
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return {'failed': True, 'msg': "Unknown state: %s" % state }
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cmd = "%s -q -y install '%s'" % (APT, pkgspec)
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rc, out, err = run_apt(cmd)
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# TODO: Ensure the package was really installed.
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return True
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return {'changed': True, 'failed': False}
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def remove(pkgspec):
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installed = package_installed(pkgspec)
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debug("installed: %d" % installed)
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if not installed:
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return False
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else:
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cmd = "%s -q -y remove '%s'" % (APT, pkgspec)
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rc, out, err = run_apt(cmd)
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# TODO: Ensure the package was really removed.
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return True
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def update(args):
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#generic update routine
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# TODO: generic update routine
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pass
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def remove_only(pkgspec):
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# remove this pkg and only this pkg - fail if it will require more to remove
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# TODO: remove this pkg and only this pkg - fail if it will require more to remove
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pass
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def main():
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# state=installed pkg=pkgspec
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# state=removed pkg=pkgspec
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# ===========================================
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if len(sys.argv) == 1:
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msg = "the apt module requires arguments (-a)"
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return 1, msg
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if not os.path.exists(APT):
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fail_json(msg="Cannot find apt-get")
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argfile = sys.argv[1]
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if not os.path.exists(argfile):
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msg = "Argument file not found"
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return 1, msg
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args = open(argfile, 'r').read()
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items = shlex.split(args)
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if not len(items):
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msg = "the apt module requires arguments (-a)"
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return 1, msg
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fail_json(msg='the module requires arguments -a')
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sys.exit(1)
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# if nothing else changes - it fails
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results = { 'changed':False,
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'failed':True,
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'results':'',
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'errors':'',
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'msg':"; ".join(items) }
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params = {}
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for x in items:
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try:
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(k, v) = x.split("=", 1)
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except ValueError:
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msg = "invalid arguments: %s" % args
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return 1, msg
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(k, v) = x.split("=")
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params[k] = v
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if 'state' in params:
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if 'pkg' not in params:
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results['msg'] = "No pkg specified"
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else:
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state = params['state']
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pkgspec = params['pkg']
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state = params.get('state','installed')
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package = params.get('pkg', None)
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devnull = open(os.devnull, 'w')
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results = ensure(state, pkgspec)
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print json.dumps(results)
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return 0, None
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if state not in ['installed', 'removed']:
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fail_json(msg='invalid state')
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if package is None:
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fail_json(msg='pkg is required')
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if __name__ == "__main__":
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rc, msg = main()
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if rc != 0: # something went wrong emit the msg
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print json.dumps({
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"failed" : bool(rc),
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"msg" : msg
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})
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sys.exit(rc)
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if state == 'installed':
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changed = install(package)
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elif state == 'removed':
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changed = remove(package)
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exit_json(changed=changed)
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fail_json(name=name, msg='Unexpected position reached')
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sys.exit(0)
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