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Filename : _ec2_snapshot_facts.py
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#!/usr/bin/python
# Copyright: Ansible Project
# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)

from __future__ import absolute_import, division, print_function
__metaclass__ = type


ANSIBLE_METADATA = {'metadata_version': '1.1',
                    'status': ['preview'],
                    'supported_by': 'community'}


DOCUMENTATION = '''
---
module: ec2_snapshot_info
short_description: Gather information about ec2 volume snapshots in AWS
description:
    - Gather information about ec2 volume snapshots in AWS
    - This module was called C(ec2_snapshot_facts) before Ansible 2.9. The usage did not change.
version_added: "2.1"
requirements: [ boto3 ]
author: "Rob White (@wimnat)"
options:
  snapshot_ids:
    description:
      - If you specify one or more snapshot IDs, only snapshots that have the specified IDs are returned.
    required: false
    default: []
  owner_ids:
    description:
      - If you specify one or more snapshot owners, only snapshots from the specified owners and for which you have \
      access are returned.
    required: false
    default: []
  restorable_by_user_ids:
    description:
      - If you specify a list of restorable users, only snapshots with create snapshot permissions for those users are \
      returned.
    required: false
    default: []
  filters:
    description:
      - A dict of filters to apply. Each dict item consists of a filter key and a filter value. See \
      U(https://docs.aws.amazon.com/AWSEC2/latest/APIReference/API_DescribeSnapshots.html) for possible filters. Filter \
      names and values are case sensitive.
    required: false
    default: {}
notes:
  - By default, the module will return all snapshots, including public ones. To limit results to snapshots owned by \
  the account use the filter 'owner-id'.

extends_documentation_fragment:
    - aws
    - ec2
'''

EXAMPLES = '''
# Note: These examples do not set authentication details, see the AWS Guide for details.

# Gather information about all snapshots, including public ones
- ec2_snapshot_info:

# Gather information about all snapshots owned by the account 0123456789
- ec2_snapshot_info:
    filters:
      owner-id: 0123456789

# Or alternatively...
- ec2_snapshot_info:
    owner_ids:
      - 0123456789

# Gather information about a particular snapshot using ID
- ec2_snapshot_info:
    filters:
      snapshot-id: snap-00112233

# Or alternatively...
- ec2_snapshot_info:
    snapshot_ids:
      - snap-00112233

# Gather information about any snapshot with a tag key Name and value Example
- ec2_snapshot_info:
    filters:
      "tag:Name": Example

# Gather information about any snapshot with an error status
- ec2_snapshot_info:
    filters:
      status: error

'''

RETURN = '''
snapshot_id:
    description: The ID of the snapshot. Each snapshot receives a unique identifier when it is created.
    type: str
    returned: always
    sample: snap-01234567
volume_id:
    description: The ID of the volume that was used to create the snapshot.
    type: str
    returned: always
    sample: vol-01234567
state:
    description: The snapshot state (completed, pending or error).
    type: str
    returned: always
    sample: completed
state_message:
    description: Encrypted Amazon EBS snapshots are copied asynchronously. If a snapshot copy operation fails (for example, if the proper
                 AWS Key Management Service (AWS KMS) permissions are not obtained) this field displays error state details to help you diagnose why the
                 error occurred.
    type: str
    returned: always
    sample:
start_time:
    description: The time stamp when the snapshot was initiated.
    type: str
    returned: always
    sample: "2015-02-12T02:14:02+00:00"
progress:
    description: The progress of the snapshot, as a percentage.
    type: str
    returned: always
    sample: "100%"
owner_id:
    description: The AWS account ID of the EBS snapshot owner.
    type: str
    returned: always
    sample: "099720109477"
description:
    description: The description for the snapshot.
    type: str
    returned: always
    sample: "My important backup"
volume_size:
    description: The size of the volume, in GiB.
    type: int
    returned: always
    sample: 8
owner_alias:
    description: The AWS account alias (for example, amazon, self) or AWS account ID that owns the snapshot.
    type: str
    returned: always
    sample: "033440102211"
tags:
    description: Any tags assigned to the snapshot.
    type: dict
    returned: always
    sample: "{ 'my_tag_key': 'my_tag_value' }"
encrypted:
    description: Indicates whether the snapshot is encrypted.
    type: bool
    returned: always
    sample: "True"
kms_key_id:
    description: The full ARN of the AWS Key Management Service (AWS KMS) customer master key (CMK) that was used to \
    protect the volume encryption key for the parent volume.
    type: str
    returned: always
    sample: "74c9742a-a1b2-45cb-b3fe-abcdef123456"
data_encryption_key_id:
    description: The data encryption key identifier for the snapshot. This value is a unique identifier that \
    corresponds to the data encryption key that was used to encrypt the original volume or snapshot copy.
    type: str
    returned: always
    sample: "arn:aws:kms:ap-southeast-2:012345678900:key/74c9742a-a1b2-45cb-b3fe-abcdef123456"

'''

try:
    import boto3
    from botocore.exceptions import ClientError
    HAS_BOTO3 = True
except ImportError:
    HAS_BOTO3 = False

from ansible.module_utils.basic import AnsibleModule
from ansible.module_utils.ec2 import (ansible_dict_to_boto3_filter_list,
                                      boto3_conn, boto3_tag_list_to_ansible_dict, camel_dict_to_snake_dict,
                                      ec2_argument_spec, get_aws_connection_info)


def list_ec2_snapshots(connection, module):

    snapshot_ids = module.params.get("snapshot_ids")
    owner_ids = [str(owner_id) for owner_id in module.params.get("owner_ids")]
    restorable_by_user_ids = [str(user_id) for user_id in module.params.get("restorable_by_user_ids")]
    filters = ansible_dict_to_boto3_filter_list(module.params.get("filters"))

    try:
        snapshots = connection.describe_snapshots(SnapshotIds=snapshot_ids, OwnerIds=owner_ids, RestorableByUserIds=restorable_by_user_ids, Filters=filters)
    except ClientError as e:
        if e.response['Error']['Code'] == "InvalidSnapshot.NotFound":
            if len(snapshot_ids) > 1:
                module.warn("Some of your snapshots may exist, but %s" % str(e))
            snapshots = {'Snapshots': []}
        else:
            module.fail_json(msg="Failed to describe snapshots: %s" % str(e))

    # Turn the boto3 result in to ansible_friendly_snaked_names
    snaked_snapshots = []
    for snapshot in snapshots['Snapshots']:
        snaked_snapshots.append(camel_dict_to_snake_dict(snapshot))

    # Turn the boto3 result in to ansible friendly tag dictionary
    for snapshot in snaked_snapshots:
        if 'tags' in snapshot:
            snapshot['tags'] = boto3_tag_list_to_ansible_dict(snapshot['tags'], 'key', 'value')

    module.exit_json(snapshots=snaked_snapshots)


def main():

    argument_spec = ec2_argument_spec()
    argument_spec.update(
        dict(
            snapshot_ids=dict(default=[], type='list'),
            owner_ids=dict(default=[], type='list'),
            restorable_by_user_ids=dict(default=[], type='list'),
            filters=dict(default={}, type='dict')
        )
    )

    module = AnsibleModule(argument_spec=argument_spec,
                           mutually_exclusive=[
                               ['snapshot_ids', 'owner_ids', 'restorable_by_user_ids', 'filters']
                           ]
                           )
    if module._name == 'ec2_snapshot_facts':
        module.deprecate("The 'ec2_snapshot_facts' module has been renamed to 'ec2_snapshot_info'", version='2.13')

    if not HAS_BOTO3:
        module.fail_json(msg='boto3 required for this module')

    region, ec2_url, aws_connect_params = get_aws_connection_info(module, boto3=True)

    if region:
        connection = boto3_conn(module, conn_type='client', resource='ec2', region=region, endpoint=ec2_url, **aws_connect_params)
    else:
        module.fail_json(msg="region must be specified")

    list_ec2_snapshots(connection, module)


if __name__ == '__main__':
    main()