08c1f96e4b
operations in the correct order, so the file module results overlay the original module results, not the other way around (which keeps any failure msg's intact)
194 lines
6.1 KiB
Python
Executable file
194 lines
6.1 KiB
Python
Executable file
#!/usr/bin/python
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# -*- coding: utf-8 -*-
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# (c) 2012, Jan-Piet Mens <jpmens () gmail.com>
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#
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# This file is part of Ansible
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#
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# Ansible is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# Ansible is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with Ansible. If not, see <http://www.gnu.org/licenses/>.
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#
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# see examples/playbooks/get_url.yml
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import shutil
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import datetime
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import tempfile
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HAS_URLLIB2=True
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try:
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import urllib2
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except ImportError:
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HAS_URLLIB2=False
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HAS_URLPARSE=True
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try:
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import urlparse
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import socket
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except ImportError:
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HAS_URLPARSE=False
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# ==============================================================
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# url handling
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def url_filename(url):
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fn = os.path.basename(urlparse.urlsplit(url)[2])
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if fn == '':
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return 'index.html'
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return fn
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def url_do_get(module, url, dest):
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"""
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Get url and return request and info
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Credits: http://stackoverflow.com/questions/7006574/how-to-download-file-from-ftp
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"""
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USERAGENT = 'ansible-httpget'
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info = dict(url=url)
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r = None
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actualdest = None
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if os.path.isdir(dest):
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urlfilename = url_filename(url)
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actualdest = "%s/%s" % (dest, urlfilename)
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module.params['path'] = actualdest
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else:
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actualdest = dest
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info['daisychain_args'] = module.params
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info['daisychain_args']['state'] = 'file'
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info['daisychain_args']['dest'] = actualdest
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info['actualdest'] = actualdest
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request = urllib2.Request(url)
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request.add_header('User-agent', USERAGENT)
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if os.path.exists(actualdest):
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t = datetime.datetime.utcfromtimestamp(os.path.getmtime(actualdest))
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tstamp = t.strftime('%a, %d %b %Y %H:%M:%S +0000')
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request.add_header('If-Modified-Since', tstamp)
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try:
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r = urllib2.urlopen(request)
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info.update(r.info())
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info.update(dict(msg="OK (%s bytes)" % r.headers.get('Content-Length', 'unknown'), status=200))
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except urllib2.HTTPError, e:
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# Must not fail_json() here so caller can handle HTTP 304 unmodified
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info.update(dict(msg=str(e), status=e.code))
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return r, info
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except urllib2.URLError, e:
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code = getattr(e, 'code', -1)
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module.fail_json(msg="Request failed: %s" % str(e), status_code=code)
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return r, info
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def url_get(module, url, dest):
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"""
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Download url and store at dest.
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If dest is a directory, determine filename from url.
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Return (tempfile, info about the request)
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"""
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req, info = url_do_get(module, url, dest)
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# TODO: should really handle 304, but how? src file could exist (and be newer) but empty
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if info['status'] == 304:
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module.exit_json(url=url, dest=info.get('actualdest', dest), changed=False, msg=info.get('msg', ''))
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# create a temporary file and copy content to do md5-based replacement
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if info['status'] != 200:
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module.fail_json(msg="Request failed", status_code=info['status'], response=info['msg'], url=url)
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actualdest = info['actualdest']
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fd, tempname = tempfile.mkstemp()
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f = os.fdopen(fd, 'wb')
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try:
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shutil.copyfileobj(req, f)
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except Exception, err:
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os.remove(tempname)
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module.fail_json(msg="failed to create temporary content file: %s" % str(err))
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f.close()
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req.close()
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return tempname, info
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# ==============================================================
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# main
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def main():
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# does this really happen on non-ancient python?
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if not HAS_URLLIB2:
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module.fail_json(msg="urllib2 is not installed")
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if not HAS_URLPARSE:
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module.fail_json(msg="urlparse is not installed")
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module = AnsibleModule(
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# not checking because of daisy chain to file module
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check_invalid_arguments = False,
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argument_spec = dict(
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url = dict(required=True),
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dest = dict(required=True),
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)
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)
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url = module.params['url']
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dest = os.path.expanduser(module.params['dest'])
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# download to tmpsrc
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tmpsrc, info = url_get(module, url, dest)
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md5sum_src = None
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md5sum_dest = None
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dest = info['actualdest']
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# raise an error if there is no tmpsrc file
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if not os.path.exists(tmpsrc):
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os.remove(tmpsrc)
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module.fail_json(msg="Request failed", status_code=info['status'], response=info['msg'])
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if not os.access(tmpsrc, os.R_OK):
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os.remove(tmpsrc)
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module.fail_json( msg="Source %s not readable" % (tmpsrc))
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md5sum_src = module.md5(tmpsrc)
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# check if there is no dest file
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if os.path.exists(dest):
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# raise an error if copy has no permission on dest
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if not os.access(dest, os.W_OK):
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os.remove(tmpsrc)
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module.fail_json( msg="Destination %s not writable" % (dest))
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if not os.access(dest, os.R_OK):
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os.remove(tmpsrc)
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module.fail_json( msg="Destination %s not readable" % (dest))
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md5sum_dest = module.md5(dest)
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else:
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if not os.access(os.path.dirname(dest), os.W_OK):
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os.remove(tmpsrc)
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module.fail_json( msg="Destination %s not writable" % (os.path.dirname(dest)))
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if md5sum_src != md5sum_dest:
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try:
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shutil.copyfile(tmpsrc, dest)
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except Exception, err:
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os.remove(tmpsrc)
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module.fail_json(msg="failed to copy %s to %s: %s" % (tmpsrc, dest, str(err)))
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changed = True
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else:
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changed = False
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os.remove(tmpsrc)
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# Mission complete
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module.exit_json(url=url, dest=dest, src=tmpsrc, md5sum=md5sum_src,
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changed=changed, msg=info.get('msg',''),
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daisychain="file", daisychain_args=info.get('daisychain_args',''))
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# this is magic, see lib/ansible/module_common.py
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#<<INCLUDE_ANSIBLE_MODULE_COMMON>>
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main()
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