Basic groundwork for s3 module.
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library/s3
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library/s3
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#!/usr/bin/python -tt
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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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DOCUMENTATION = '''
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---
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module: s3
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short_description: idempotent s3 module putting a file into S3.
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description:
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- This module allows the user to dictate the presence of a given file in an S3 bucket. If or once the key (file) exists in the bucket, it returns a time-expired download url. This module has a dependency on python-boto.
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version_added: "1.1"
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options:
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bucket:
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description:
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- bucket you wish to present/absent for the key (file in path).
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required: true
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default: null
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aliases: []
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state:
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description:
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- desired state for both bucket and file.
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default: null
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aliases: []
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path:
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description:
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- path to the key (file) which you wish to be present/absent in the bucket.
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required: false
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default: null
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aliases: []
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expiry:
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description:
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- expiry period (in seconds) for returned download URL.
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required: false
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default: 600
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aliases: []
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examples:
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- code: 's3 bucket=mybucket path=/path/to/file state=present'
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description: "Simple playbook example"
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requirements: [ "boto" ]
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author: Lester Wade
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'''
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import sys
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import os
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import urlparse
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try:
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import boto
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except ImportError:
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print "failed=True msg='boto required for this module'"
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sys.exit(1)
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def main():
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module = AnsibleModule(
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argument_spec = dict(
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bucket = dict(),
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path = dict(),
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state = dict(choices=['present', 'absent']),
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expiry = dict(default=600),
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s3_url = dict(aliases=['S3_URL']),
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ec2_secret_key = dict(aliases=['EC2_SECRET_KEY']),
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ec2_access_key = dict(aliases=['EC2_ACCESS_KEY']),
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),
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required_together=[ ['bucket', 'path', 'state'] ],
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)
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bucket_name = module.params.get('bucket')
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path = os.path.expanduser(module.params['path'])
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state = module.params.get('state')
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expiry = int(module.params['expiry'])
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s3_url = module.params.get('s3_url')
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ec2_secret_key = module.params.get('ec2_secret_key')
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ec2_access_key = module.params.get('ec2_access_key')
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# allow eucarc environment variables to be used if ansible vars aren't set
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if not s3_url and 'S3_URL' in os.environ:
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s3_url = os.environ['S3_URL']
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if not ec2_secret_key and 'EC2_SECRET_KEY' in os.environ:
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ec2_secret_key = os.environ['EC2_SECRET_KEY']
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if not ec2_access_key and 'EC2_ACCESS_KEY' in os.environ:
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ec2_access_key = os.environ['EC2_ACCESS_KEY']
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# If we have an S3_URL env var set, this is likely to be Walrus, so change connection method
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if 'S3_URL' in os.environ:
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try:
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walrus = urlparse.urlparse(s3_url).hostname
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s3 = boto.connect_walrus(walrus, ec2_access_key, ec2_secret_key)
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except boto.exception.NoAuthHandlerFound, e:
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module.fail_json(msg = str(e))
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else:
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try:
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s3 = boto.connect_s3(ec2_access_key, ec2_secret_key)
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except boto.exception.NoAuthHandlerFound, e:
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module.fail_json(msg = str(e))
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# README - Future features this module should have:
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# enhanced path (contents of a directory)
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# md5sum check of file vs. key in bucket
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# a user-friendly way to fetch the key (maybe a "fetch" parameter option)
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# persistent download URL if desired
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# Lets get some information from the s3 connection, including bucket check ...
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bucket = s3.lookup(bucket_name)
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if bucket:
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bucket_exists = True
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else:
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bucket_exists = False
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# Lets list the contents
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if bucket_exists is True:
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bucket_contents = bucket.list()
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# Check filename is valid, if not downloading
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if path:
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if not os.path.exists(path):
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failed = True
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module.fail_json(msg="Source %s cannot be found" % (path), failed=failed)
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sys.exit(0)
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# Default to setting the key to the same as the filename if not downloading. Adding custom key would be trivial.
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key_name = os.path.basename(path)
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# Check to see if the key already exists
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if bucket_exists is True:
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try:
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key_check = bucket.get_key(key_name)
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if key_check:
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key_exists = True
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else:
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key_exists = False
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except s3.provider.storage_response_error, e:
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module.fail_json(msg= str(e))
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if state == 'present':
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if bucket_exists is True and key_exists is True:
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exists = True
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changed = False
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module.exit_json(msg="Bucket and key already exist", changed=changed)
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sys.exit(0)
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# If bucket exists, there cannot be a key within, lets create it ...
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if state == 'present':
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if bucket_exists is False:
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try:
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bucket = s3.create_bucket(bucket_name)
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bucket_exists = True
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key_exists = False
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changed = True
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except s3.provider.storage_create_error, e:
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module.fail_json(msg = str(e))
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# TO-DO, md5sum of key and local file to be confident that its valid.
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# If bucket now exists but key doesn't, create the key
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if state == 'present':
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if bucket_exists is True and key_exists is False:
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try:
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key = bucket.new_key(key_name)
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key.set_contents_from_filename(path)
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url = key.generate_url(expiry)
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module.exit_json(msg="Put operation complete", url=url, changed=True)
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sys.exit(0)
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except s3.provider.storage_copy_error, e:
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module.fail_json(msg= str(e))
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# If state is absent and the bucket exists (doesn't matter about key since the bucket is the container), delete it.
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if state == 'absent':
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if bucket_exists is True:
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try:
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for contents in bucket.list():
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bucket.delete_key(contents)
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s3.delete_bucket(bucket)
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changed = True
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module.exit_json(msg="Bucket and key removed.", changed=changed)
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sys.exit(0)
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except s3.provider.storage_response_error, e:
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module.fail_json(msg= str(e))
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else:
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changed = False
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module.exit_json(msg="Bucket and key do not exist", changed=changed)
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# TO DO - ADD BUCKET DOWNLOAD OPTION
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# # If download is specified, fetch it
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# if download:
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# if bucket_exists is True and key_exists is True:
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# try:
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# getkey = bucket.lookup(key_name)
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# getkey.get_contents_to_filename(path)
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# url = getkey.generate_url(expiry)
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# module.exit_json(msg="GET operation complete", url=url, changed=True)
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# sys.exit(0)
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# except s3.provider.storage_copy_error, e:
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# module.fail_json(msg= str(e))
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sys.exit(0)
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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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