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Merge pull request #5496 from angstwad/cf-module

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Module support for Rackspace Cloud Files
pull/5745/head
jctanner 11 years ago
parent df8ecdeded a85e021640
commit a807e3b9c8
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library/cloud/rax_files_objects
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#!/usr/bin/python -tt
# (c) 2013, Paul Durivage <paul.durivage@rackspace.com>
#
# 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/>.
DOCUMENTATION = '''
---
module:
short_description: create, fetch, and delete objects in Rackspace Cloud Files
description:
- Upload, download, and delete objects in Rackspace Cloud Files
version_added: "1.5"
options:
api_key:
description:
- Rackspace API key (overrides I(credentials))requirements: [ "pyrax" ]
clear_meta:
description:
- Optionally clear existing metadata when applying metadata to existing objects.
- Selecting this option is only appropriate when setting typ=meta
choices: ["yes", "no"]
default: "no"
container:
description:
- The container to use for file object operations.
required: true
credentials:
description:
- File to find the Rackspace credentials in (ignored if I(api_key) and
I(username) are provided)
default: null
aliases: ['creds_file']
dest:
description:
- The destination of a "get" operation; i.e. a local directory, "/home/user/myfolder"
- Used to specify the destination of an operation on a remote object; i.e. a file name,
"file1", or a comma-separated list of remote objects, "file1,file2,file17"
expires:
description:
- Used to set an expiration on a file or folder uploaded to Cloud Files
- Requires an integer, specifying expiration in seconds
meta:
description:
- A hash of items to set as metadata values on an uploaded file or folder
method:
description:
- The method of operation to be performed: put, get, delete
- Put to upload files to Cloud Files
- Get to download files from Cloud Files
- Delete to delete remote objects in Cloud Files
choices: ["get", "put", "delete"]
default: "get"
region:
description:
- Region to create an instance in
default: DFW
src:
description:
- Source from which to upload files
- Used to specify a remote object as a source for an operation, i.e. a file name,
"file1", or a comma-separated list of remote objects, "file1,file2,file17"
- src and dest are mutually exclusive on remote-only object operations
structure:
description:
- Used to specify whether to maintain nested directory structure when downloading objects from Cloud Files
- Setting to false downloads the contents of a container to a single, flat directory
choices: ["yes", "no"]
default: "yes"
typ:
description:
- Type of object to do work on: metadata object or a file object
choices: ["file", "meta"]
default: "file"
username:
description:
- Rackspace username (overrides I(credentials))
requirements: [ "pyrax" ]
author: Paul Durivage
notes:
- The following environment variables can be used, C(RAX_USERNAME),
C(RAX_API_KEY), C(RAX_CREDS_FILE), C(RAX_CREDENTIALS), C(RAX_REGION).
- C(RAX_CREDENTIALS) and C(RAX_CREDS_FILE) points to a credentials file
appropriate for pyrax. See U(https://github.com/rackspace/pyrax/blob/master/docs/getting_started.md#authenticating)
- C(RAX_USERNAME) and C(RAX_API_KEY) obviate the use of a credentials file
- C(RAX_REGION) defines a Rackspace Public Cloud region (DFW, ORD, LON, ...)
'''
EXAMPLES = '''
---
- name: "Test Cloud Files Objects"
hosts: local
gather_facts: False
tasks:
- name: "Get objects from test container"
rax_files_objects: container=testcont dest=~/Downloads/testcont
- name: "Get single object from test container"
rax_files_objects: container=testcont src=file1 dest=~/Downloads/testcont
- name: "Get several objects from test container"
rax_files_objects: container=testcont src=file1,file2,file3 dest=~/Downloads/testcont
- name: "Delete one object in test container"
rax_files_objects: container=testcont method=delete dest=file1
- name: "Delete several objects in test container"
rax_files_objects: container=testcont method=delete dest=file2,file3,file4
- name: "Delete all objects in test container"
rax_files_objects: container=testcont method=delete
- name: "Upload all files to test container"
rax_files_objects: container=testcont method=put src=~/Downloads/onehundred
- name: "Upload one file to test container"
rax_files_objects: container=testcont method=put src=~/Downloads/testcont/file1
- name: "Upload one file to test container with metadata"
rax_files_objects:
container: testcont
src: ~/Downloads/testcont/file2
method: put
meta:
testkey: testdata
who_uploaded_this: paul.durivage@rackspace.com
- name: "Upload one file to test container with TTL of 60 seconds"
rax_files_objects: container=testcont method=put src=~/Downloads/testcont/file3 expires=60
- name: "Attempt to get remote object that does not exist"
rax_files_objects: container=testcont method=get src=FileThatDoesNotExist.jpg dest=~/Downloads/testcont
ignore_errors: yes
- name: "Attempt to delete remote object that does not exist"
rax_files_objects: container=testcont method=delete dest=FileThatDoesNotExist.jpg
ignore_errors: yes
- name: "Test Cloud Files Objects Metadata"
hosts: local
gather_facts: false
tasks:
- name: "Get metadata on one object"
rax_files_objects: container=testcont type=meta dest=file2
- name: "Get metadata on several objects"
rax_files_objects: container=testcont type=meta src=file2,file1
- name: "Set metadata on an object"
rax_files_objects:
container: testcont
type: meta
dest: file17
meta:
key1: value1
key2: value2
clear_meta: true
- name: "Verify metadata is set"
rax_files_objects: container=testcont type=meta src=file17
- name: "Delete metadata"
rax_files_objects:
container: testcont
type: meta
dest: file17
method: delete
meta:
key1: ''
key2: ''
- name: "Get metadata on all objects"
rax_files_objects: container=testcont type=meta
'''
import os
try:
import pyrax
except ImportError, e:
print("failed=True msg='pyrax is required for this module'")
sys.exit(1)
EXIT_DICT = {'success': False}
META_PREFIX = 'x-object-meta-'
def _get_container(module, cf, container):
try:
return cf.get_container(container)
except pyrax.exc.NoSuchContainer, e:
module.fail_json(msg=e.message)
def upload(module, cf, container, src, dest, meta, expires):
""" Uploads a single object or a folder to Cloud Files Optionally sets an
metadata, TTL value (expires), or Content-Disposition and Content-Encoding
headers.
"""
c = _get_container(module, cf, container)
num_objs_before = len(c.get_object_names())
if not src:
module.fail_json(msg='src must be specified when uploading')
src = os.path.abspath(os.path.expanduser(src))
is_dir = os.path.isdir(src)
if not is_dir and not os.path.isfile(src) or not os.path.exists(src):
module.fail_json(msg='src must be a file or a directory')
if dest and is_dir:
module.fail_json(msg='dest cannot be set when whole '
'directories are uploaded')
cont_obj = None
if dest and not is_dir:
try:
cont_obj = c.upload_file(src, obj_name=dest, ttl=expires)
except Exception, e:
module.fail_json(msg=e.message)
elif is_dir:
try:
id, total_bytes = cf.upload_folder(src, container=c.name, ttl=expires)
except Exception, e:
module.fail_json(msg=e.message)
while True:
bytes = cf.get_uploaded(id)
if bytes == total_bytes:
break
time.sleep(1)
else:
try:
cont_obj = c.upload_file(src, ttl=expires)
except Exception, e:
module.fail_json(msg=e.message)
num_objs_after = len(c.get_object_names())
if not meta:
meta = {}
meta_result = {}
if meta:
if cont_obj:
meta_result = cont_obj.set_metadata(meta)
else:
def _set_meta(objs, meta):
""" Sets metadata on a list of objects specified by name """
for obj in objs:
try:
result = c.get_object(obj).set_metadata(meta)
except Exception, e:
module.fail_json(msg=e.message)
else:
meta_result[obj] = result
return meta_result
def _walker(objs, path, filenames):
""" Callback func for os.path.walk """
prefix = ''
if path != src:
prefix = path.split(src)[-1].lstrip('/')
filenames = [os.path.join(prefix, name) for name in filenames
if not os.path.isdir(name)]
objs += filenames
_objs = []
os.path.walk(src, _walker, _objs)
meta_result = _set_meta(_objs, meta)
EXIT_DICT['success'] = True
EXIT_DICT['container'] = c.name
EXIT_DICT['msg'] = "Uploaded %s to container: %s" % (src, c.name)
if cont_obj or locals().get('bytes'):
EXIT_DICT['changed'] = True
if meta_result:
EXIT_DICT['meta'] = {
'updated': True
}
if cont_obj:
EXIT_DICT['bytes'] = cont_obj.total_bytes
EXIT_DICT['etag'] = cont_obj.etag
else:
EXIT_DICT['bytes'] = total_bytes
module.exit_json(**EXIT_DICT)
def download(module, cf, container, src, dest, structure):
""" Download objects from Cloud Files to a local path specified by "dest".
Optionally disable maintaining a directory structure by by passing a
false value to "structure".
"""
# Looking for an explicit destination
if not dest:
module.fail_json(msg='dest is a required argument when '
'downloading from Cloud Files')
# Attempt to fetch the container by name
c = _get_container(module, cf, container)
# Accept a single object name or a comma-separated list of objs
# If not specified, get the entire container
if src:
objs = src.split(',')
objs = map(str.strip, objs)
else:
objs = c.get_object_names()
dest = os.path.abspath(os.path.expanduser(dest))
is_dir = os.path.isdir(dest)
if not is_dir:
module.fail_json(msg='dest must be a directory')
results = []
for obj in objs:
try:
c.download_object(obj, dest, structure=structure)
except Exception, e:
module.fail_json(msg=e.message)
else:
results.append(obj)
len_results = len(results)
len_objs = len(objs)
EXIT_DICT['container'] = c.name
EXIT_DICT['requested_downloaded'] = results
if results:
EXIT_DICT['changed'] = True
if len_results == len_objs:
EXIT_DICT['success'] = True
EXIT_DICT['msg'] = "%s objects downloaded to %s" % (len_results, dest)
else:
EXIT_DICT['msg'] = "Error: only %s of %s objects were " \
"downloaded" % (len_results, len_objs)
module.exit_json(**EXIT_DICT)
def delete(module, cf, container, src, dest):
""" Delete specific objects by proving a single file name or a
comma-separated list to src OR dest (but not both). Ommitting file name(s)
assumes the entire container is to be deleted.
"""
objs = None
if src and dest:
module.fail_json(msg="Error: ambiguous instructions; files to be deleted "
"have been specified on both src and dest args")
elif dest:
objs = dest
else:
objs = src
c = _get_container(module, cf, container)
if objs:
objs = objs.split(',')
objs = map(str.strip, objs)
else:
objs = c.get_object_names()
num_objs = len(objs)
results = []
for obj in objs:
try:
result = c.delete_object(obj)
except Exception, e:
module.fail_json(msg=e.message)
else:
results.append(result)
num_deleted = results.count(True)
EXIT_DICT['container'] = c.name
EXIT_DICT['deleted'] = num_deleted
EXIT_DICT['requested_deleted'] = objs
if num_deleted:
EXIT_DICT['changed'] = True
if num_objs == num_deleted:
EXIT_DICT['success'] = True
EXIT_DICT['msg'] = "%s objects deleted" % num_deleted
else:
EXIT_DICT['msg'] = ("Error: only %s of %s objects "
"deleted" % (num_deleted, num_objs))
module.exit_json(**EXIT_DICT)
def get_meta(module, cf, container, src, dest):
""" Get metadata for a single file, comma-separated list, or entire
container
"""
c = _get_container(module, cf, container)
objs = None
if src and dest:
module.fail_json(msg="Error: ambiguous instructions; files to be deleted "
"have been specified on both src and dest args")
elif dest:
objs = dest
else:
objs = src
if objs:
objs = objs.split(',')
objs = map(str.strip, objs)
else:
objs = c.get_object_names()
results = {}
for obj in objs:
try:
meta = c.get_object(obj).get_metadata()
except Exception, e:
module.fail_json(msg=e.message)
else:
results[obj] = {k.split(META_PREFIX)[-1]: v for k, v in meta.iteritems()}
EXIT_DICT['container'] = c.name
if results:
EXIT_DICT['meta_results'] = results
EXIT_DICT['success'] = True
module.exit_json(**EXIT_DICT)
def put_meta(module, cf, container, src, dest, meta, clear_meta):
""" Set metadata on a container, single file, or comma-separated list.
Passing a true value to clear_meta clears the metadata stored in Cloud
Files before setting the new metadata to the value of "meta".
"""
objs = None
if src and dest:
module.fail_json(msg="Error: ambiguous instructions; files to set meta"
" have been specified on both src and dest args")
elif dest:
objs = dest
else:
objs = src
objs = objs.split(',')
objs = map(str.strip, objs)
c = _get_container(module, cf, container)
results = []
for obj in objs:
try:
result = c.get_object(obj).set_metadata(meta, clear=clear_meta)
except Exception, e:
module.fail_json(msg=e.message)
else:
results.append(result)
EXIT_DICT['container'] = c.name
EXIT_DICT['success'] = True
if results:
EXIT_DICT['changed'] = True
EXIT_DICT['num_changed'] = True
module.exit_json(**EXIT_DICT)
def delete_meta(module, cf, container, src, dest, meta):
""" Removes metadata keys and values specified in meta, if any. Deletes on
all objects specified by src or dest (but not both), if any; otherwise it
deletes keys on all objects in the container
"""
objs = None
if src and dest:
module.fail_json(msg="Error: ambiguous instructions; meta keys to be "
"deleted have been specified on both src and dest"
" args")
elif dest:
objs = dest
else:
objs = src
objs = objs.split(',')
objs = map(str.strip, objs)
c = _get_container(module, cf, container)
results = [] # Num of metadata keys removed, not objects affected
for obj in objs:
if meta:
for k, v in meta.items():
try:
result = c.get_object(obj).remove_metadata_key(k)
except Exception, e:
module.fail_json(msg=e.message)
else:
results.append(result)
else:
try:
o = c.get_object(obj)
except pyrax.exc.NoSuchObject, e:
module.fail_json(msg=e.message)
for k, v in o.get_metadata().items():
try:
result = o.remove_metadata_key(k)
except Exception, e:
module.fail_json(msg=e.message)
results.append(result)
EXIT_DICT['container'] = c.name
EXIT_DICT['success'] = True
if results:
EXIT_DICT['changed'] = True
EXIT_DICT['num_deleted'] = len(results)
module.exit_json(**EXIT_DICT)
def cloudfiles(module, container, src, dest, method, typ, meta, clear_meta,
structure, expires):
""" Dispatch from here to work with metadata or file objects """
cf = pyrax.cloudfiles
if typ == "file":
if method == 'put':
upload(module, cf, container, src, dest, meta, expires)
elif method == 'get':
download(module, cf, container, src, dest, structure)
elif method == 'delete':
delete(module, cf, container, src, dest)
else:
if method == 'get':
get_meta(module, cf, container, src, dest)
if method == 'put':
put_meta(module, cf, container, src, dest, meta, clear_meta)
if method == 'delete':
delete_meta(module, cf, container, src, dest, meta)
def main():
argument_spec = rax_argument_spec()
argument_spec.update(
dict(
container=dict(required=True),
src=dict(),
dest=dict(),
method=dict(default='get', choices=['put', 'get', 'delete']),
type=dict(default='file', choices=['file', 'meta']),
meta=dict(type='dict', default={}),
clear_meta=dict(choices=BOOLEANS, default=False, type='bool'),
structure=dict(choices=BOOLEANS, default=True, type='bool'),
expires=dict(type='int'),
)
)
module = AnsibleModule(
argument_spec=argument_spec,
required_together=rax_required_together()
)
container = module.params.get('container')
src = module.params.get('src')
dest = module.params.get('dest')
method = module.params.get('method')
typ = module.params.get('type')
meta = module.params.get('meta')
clear_meta = module.params.get('clear_meta')
structure = module.params.get('structure')
expires = module.params.get('expires')
if clear_meta and not typ == 'meta':
module.fail_json(msg='clear_meta can only be used when setting metadata')
setup_rax_module(module, pyrax)
cloudfiles(module, container, src, dest, method, typ, meta, clear_meta, structure, expires)
from ansible.module_utils.basic import *
from ansible.module_utils.rax import *
main()
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