ansible/library/yum

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#!/usr/bin/python -tt
# -*- coding: utf-8 -*-
# (c) 2012, Red Hat, Inc
# Written by Seth Vidal <skvidal at fedoraproject.org>
#
# This file is part of Ansible
#
# Ansible 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, either version 3 of the License, or
# (at your option) any later version.
#
# Ansible 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 Ansible. If not, see <http://www.gnu.org/licenses/>.
#
import traceback
import os
def_qf = "%{name}-%{version}-%{release}.%{arch}"
repoquery='/usr/bin/repoquery'
yumbin='/usr/bin/yum'
def is_installed(repoq, pkgspec, qf=def_qf):
cmd = repoq + "--disablerepo=\* --pkgnarrow=installed --qf '%s' %s " % (qf, pkgspec)
rc,out,err = run(cmd)
if rc == 0:
return [ p for p in out.split('\n') if p.strip() ]
return []
def is_available(repoq, pkgspec, qf=def_qf):
cmd = repoq + "--qf '%s' %s " % (qf, pkgspec)
rc,out,err = run(cmd)
if rc == 0:
return [ p for p in out.split('\n') if p.strip() ]
return []
def is_update(repoq, pkgspec, qf=def_qf):
cmd = repoq + "--pkgnarrow=updates --qf '%s' %s " % (qf, pkgspec)
rc,out,err = run(cmd)
if rc == 0:
return set([ p for p in out.split('\n') if p.strip() ])
return []
def what_provides(repoq, req_spec, qf=def_qf):
cmd = repoq + "--qf '%s' --whatprovides %s" % (qf, req_spec)
rc,out,err = run(cmd)
ret = []
if rc == 0:
ret = set([ p for p in out.split('\n') if p.strip() ])
return ret
def local_nvra(path):
"""return nvra of a local rpm passed in"""
cmd = "/bin/rpm -qp --qf='%%{name}-%%{version}-%%{release}.%%{arch}\n' %s'" % path
rc, out, err = run(cmd)
if rc != 0:
return None
nvra = out.split('\n')[0]
return nvra
def pkg_to_dict(pkgstr):
if pkgstr.strip():
n,e,v,r,a,repo = pkgstr.split('|')
else:
return {'error_parsing': pkgstr}
d = {
'name':n,
'arch':a,
'epoch':e,
'release':r,
'version':v,
'repo':repo,
'nevra': '%s:%s-%s-%s.%s' % (e,n,v,r,a)
}
if repo == 'installed':
d['yumstate'] = 'installed'
else:
d['yumstate'] = 'available'
return d
def repolist(repoq, qf="%{repoid}"):
cmd = repoq + "--qf '%s' -a" % (qf)
rc,out,err = run(cmd)
ret = []
if rc == 0:
ret = set([ p for p in out.split('\n') if p.strip() ])
return ret
def list_stuff(conf_file, stuff):
qf = "%{name}|%{epoch}|%{version}|%{release}|%{arch}|%{repoid}"
repoq = '%s --plugins --quiet -q ' % repoquery
if conf_file and os.path.exists(conf_file):
repoq = '%s -c %s --plugins --quiet -q ' % (repoquery,conf_file)
if stuff == 'installed':
return [ pkg_to_dict(p) for p in is_installed(repoq, '-a', qf=qf) if p.strip() ]
elif stuff == 'updates':
return [ pkg_to_dict(p) for p in is_update(repoq, '-a', qf=qf) if p.strip() ]
elif stuff == 'available':
return [ pkg_to_dict(p) for p in is_available(repoq, '-a', qf=qf) if p.strip() ]
elif stuff == 'repos':
return [ dict(repoid=name, state='enabled') for name in repolist(repoq) if name.strip() ]
else:
return [ pkg_to_dict(p) for p in is_installed(repoq, stuff, qf=qf) + is_available(repoq, stuff, qf=qf) if p.strip() ]
def run(command):
try:
cmd = subprocess.Popen(command, shell=True,
stdout=subprocess.PIPE, stderr=subprocess.PIPE)
out, err = cmd.communicate()
except (OSError, IOError), e:
rc = 1
err = str(e)
out = ''
except:
rc = 1
err = traceback.format_exc()
out = ''
if out is None:
out = ''
if err is None:
err = ''
else:
rc = cmd.returncode
return rc, out, err
def install(module, items, repoq, yum_basecmd):
res = {}
res['results'] = []
res['msg'] = ''
res['rc'] = 0
res['changed'] = False
for spec in items:
pkg = None
# check if pkgspec is installed (if possible for idempotence)
# localpkg
if spec.endswith('.rpm'):
# get the pkg name-v-r.arch
nvra = local_nvra(spec)
# look for them in the rpmdb
if is_installed(repoq, nvra):
# if they are there, skip it
continue
pkg = spec
#groups :(
elif spec.startswith('@'):
# complete wild ass guess b/c it's a group
pkg = spec
# range requires or file-requires or pkgname :(
else:
# look up what pkgs provide this
pkglist = what_provides(repoq, spec)
if not pkglist:
res['msg'] += "No Package matching '%s' found available, installed or updated" % spec
res['failed'] = True
module.exit_json(**res)
# if any of them are installed
# then nothing to do
found = False
for this in pkglist:
if is_installed(repoq, this):
found = True
res['results'].append('%s providing %s is already installed' % (this, spec))
if found:
continue
# if not - then pass in the spec as what to install
# we could get here if nothing provides it but that's not
# the error we're catching here
pkg = spec
cmd = "%s install '%s'" % (yum_basecmd, pkg)
rc, out, err = run(cmd)
# FIXME - if we did an install - go and check the rpmdb to see if it actually installed
# look for the pkg in rpmdb
# look for the pkg via obsoletes
if rc:
res['changed'] = False
res['rc'] = rc
res['results'].append(out)
res['msg'] += err
else:
res['changed'] = True
res['rc'] = 0
res['results'].append(out)
res['msg'] += err
module.exit_json(**res)
def remove(module, items, repoq, yum_basecmd):
res = {}
res['results'] = []
res['msg'] = ''
res['changed'] = False
res['rc'] = 0
for spec in items:
pkg = None
# group remove - hope you like things dying!
if spec.startswith('@'):
pkg = spec
# req or pkgname remove
else:
pkglist = what_provides(repoq, spec)
if not pkglist:
res['msg'] += "No Package matching '%s' found available, installed or updated" % spec
res['failed']=True
module.exit_json(**res)
found = False
for this in pkglist:
if is_installed(repoq, this):
found = True
if not found:
res['results'].append('%s is not installed' % spec)
continue
pkg = spec
cmd = "%s remove '%s'" % (yum_basecmd, pkg)
rc, out, err = run(cmd)
# FIXME if we ran the remove - check to make sure it actually removed :(
# look for the pkg in the rpmdb - this is notoriously hard for groups :(
if rc != 0:
res['changed'] = False
res['failed'] = True
res['rc'] = rc
res['results'].append(out)
res['msg'] += err
else:
res['changed'] = True
res['rc'] = 0
res['results'].append(out)
res['msg'] += err
module.exit_json(**res)
def latest(module, items, repoq, yum_basecmd):
res = {}
res['results'] = []
res['msg'] = ''
res['changed'] = False
res['rc'] = 0
for spec in items:
pkg = None
# groups, again
if spec.startswith('@'):
pkg = spec
# dep/pkgname - find it
else:
pkglist = what_provides(repoq, spec)
if not pkglist:
res['msg'] += "No Package matching '%s' found available, installed or updated" % spec
res['failed']=True
module.exit_json(**res)
found = False
nothing_to_do = False
can_be_installed = True
for this in pkglist:
if is_installed(repoq, this):
if is_update(repoq, this):
found = True
else:
nothing_to_do = True
if nothing_to_do:
res['results'].append("All packages providing %s are up to date" % spec)
continue
if not found:
basecmd = 'install'
else:
basecmd = 'update'
pkg = spec
cmd = "%s %s '%s'" % (yum_basecmd, basecmd, pkg)
rc, out, err = run(cmd)
# FIXME if it is - update it and check to see if it applied
# check to see if there is no longer an update available for the pkgspec
if rc:
changed = False
failed = True
else:
changed = True
failed = False
if rc:
res['changed'] = False
res['failed'] = True
res['rc'] = rc
res['results'].append(out)
res['msg'] += err
else:
res['changed'] = True
res['rc'] = 0
res['results'].append(out)
res['msg'] += err
module.exit_json(**res)
def ensure(module, state, pkgspec, conf_file):
res = {}
stdout = ""
stderr = ""
# take multiple args comma separated
items = [pkgspec]
if pkgspec.find(',') != -1:
items = pkgspec.split(',')
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yum_basecmd = '%s -d 1 -y ' % yumbin
repoq = '%s --plugins --quiet -q ' % repoquery
if conf_file and os.path.exists(conf_file):
yum_basecmd = '%s -c %s -d 1 -y' % (yumbin, conf_file)
repoq = '%s -c %s --plugins --quiet -q ' % (repoquery,conf_file)
if state in ['installed', 'present']:
install(module, items, repoq, yum_basecmd)
elif state in ['removed', 'absent']:
remove(module, items, repoq, yum_basecmd)
elif state == 'latest':
latest(module, items, repoq, yum_basecmd)
# should be caught by AnsibleModule argument_spec
return dict(changed=False, failed=True, results='', errors='unexpected state')
def remove_only(pkgspec):
# remove this pkg and only this pkg - fail if it will require more to remove
pass
def main():
# state=installed pkg=pkgspec
# state=removed pkg=pkgspec
# state=latest pkg=pkgspec
#
# informational commands:
# list=installed
# list=updates
# list=available
# list=repos
# list=pkgspec
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module = AnsibleModule(
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argument_spec = dict(
pkg=dict(aliases=['name']),
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# removed==absent, installed==present, these are accepted as aliases
state=dict(default='installed', choices=['absent','present','installed','removed','latest']),
list=dict(choices=['installed','updates','available','repos','pkgspec']),
conf_file=dict(default=None),
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)
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)
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params = module.params
if params['list'] and params['pkg']:
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module.fail_json(msg="expected 'list=' or 'name=', but not both")
if not os.path.exists(repoquery):
module.fail_json(msg="%s is required to run this module. Please install the yum-utils package." % repoquery)
if params['list']:
results = dict(results=list_stuff(params['conf_file'], params['list']))
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module.exit_json(**results)
else:
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pkg = params['pkg']
if 'pkg' is None:
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module.fail_json(msg="expected 'list=' or 'name='")
else:
state = params['state']
res = ensure(module, state, pkg, params['conf_file'])
module.fail_json(msg="we should never get here unless this all failed", **res)
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# this is magic, see lib/ansible/module_common.py
#<<INCLUDE_ANSIBLE_MODULE_COMMON>>
main()