[Scaleway] Add module to manage functions (#5463)

* [Scaleway] Add module to manage function

Signed-off-by: Lunik <lunik@tiwabbit.fr>

* fix integration tests assertions

Signed-off-by: Lunik <lunik@tiwabbit.fr>

* Update plugins/modules/scaleway_function.py

Co-authored-by: Felix Fontein <felix@fontein.de>

Signed-off-by: Lunik <lunik@tiwabbit.fr>
Co-authored-by: Felix Fontein <felix@fontein.de>

plugins/modules/scaleway_function_info.py

@@ -0,0 +1,153 @@
+#!/usr/bin/python
+# -*- coding: utf-8 -*-
+#
+# Scaleway Serverless function info module
+#
+# Copyright (c) 2022, Guillaume MARTINEZ <lunik@tiwabbit.fr>
+# GNU General Public License v3.0+ (see LICENSES/GPL-3.0-or-later.txt or https://www.gnu.org/licenses/gpl-3.0.txt)
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+from __future__ import absolute_import, division, print_function
+
+__metaclass__ = type
+
+DOCUMENTATION = '''
+---
+module: scaleway_function_info
+short_description: Retrieve information on Scaleway Function
+version_added: 6.0.0
+author: Guillaume MARTINEZ (@Lunik)
+description:
+  - This module return information about a function on Scaleway account.
+extends_documentation_fragment:
+  - community.general.scaleway
+
+
+options:
+  namespace_id:
+    type: str
+    description:
+      - Container namespace identifier.
+    required: true
+
+  region:
+    type: str
+    description:
+      - Scaleway region to use (for example C(fr-par)).
+    required: true
+    choices:
+      - fr-par
+      - nl-ams
+      - pl-waw
+
+  name:
+    type: str
+    description:
+      - Name of the function.
+    required: true
+'''
+
+EXAMPLES = '''
+- name: Get a function info
+  community.general.scaleway_function_info:
+    namespace_id: '{{ scw_function_namespace }}'
+    region: fr-par
+    name: my-awesome-function
+  register: function_info_task
+'''
+
+RETURN = '''
+function:
+  description: The function information.
+  returned: always
+  type: dict
+  sample:
+    cpu_limit: 140
+    description: Function used for testing scaleway_function ansible module
+    domain_name: fnansibletestfxamabuc-fn-ansible-test.functions.fnc.fr-par.scw.cloud
+    environment_variables:
+      MY_VAR: my_value
+    error_message: null
+    handler: handler.handle
+    http_option: ""
+    id: ceb64dc4-4464-4196-8e20-ecef705475d3
+    max_scale: 5
+    memory_limit: 256
+    min_scale: 0
+    name: fn-ansible-test
+    namespace_id: 82737d8d-0ebb-4d89-b0ad-625876eca50d
+    privacy: public
+    region: fr-par
+    runtime: python310
+    runtime_message: ""
+    secret_environment_variables: SENSITIVE_VALUE
+    status: created
+    timeout: 300s
+'''
+
+from ansible_collections.community.general.plugins.module_utils.scaleway import (
+    SCALEWAY_ENDPOINT, SCALEWAY_REGIONS, scaleway_argument_spec, Scaleway,
+    filter_sensitive_attributes
+)
+from ansible.module_utils.basic import AnsibleModule
+
+SENSITIVE_ATTRIBUTES = (
+    "secret_environment_variables",
+)
+
+
+def info_strategy(api, wished_fn):
+    fn_list = api.fetch_all_resources("functions")
+    fn_lookup = dict((fn["name"], fn)
+                     for fn in fn_list)
+
+    if wished_fn["name"] not in fn_lookup:
+        msg = "Error during function lookup: Unable to find function named '%s' in namespace '%s'" % (wished_fn["name"],
+                                                                                                      wished_fn["namespace_id"])
+
+        api.module.fail_json(msg=msg)
+
+    target_fn = fn_lookup[wished_fn["name"]]
+
+    response = api.get(path=api.api_path + "/%s" % target_fn["id"])
+    if not response.ok:
+        msg = "Error during function lookup: %s: '%s' (%s)" % (response.info['msg'],
+                                                               response.json['message'],
+                                                               response.json)
+        api.module.fail_json(msg=msg)
+
+    return response.json
+
+
+def core(module):
+    region = module.params["region"]
+    wished_function = {
+        "namespace_id": module.params["namespace_id"],
+        "name": module.params["name"]
+    }
+
+    api = Scaleway(module=module)
+    api.api_path = "functions/v1beta1/regions/%s/functions" % region
+
+    summary = info_strategy(api=api, wished_fn=wished_function)
+
+    module.exit_json(changed=False, function=filter_sensitive_attributes(summary, SENSITIVE_ATTRIBUTES))
+
+
+def main():
+    argument_spec = scaleway_argument_spec()
+    argument_spec.update(dict(
+        namespace_id=dict(type='str', required=True),
+        region=dict(type='str', required=True, choices=SCALEWAY_REGIONS),
+        name=dict(type='str', required=True)
+    ))
+    module = AnsibleModule(
+        argument_spec=argument_spec,
+        supports_check_mode=True,
+    )
+
+    core(module)
+
+
+if __name__ == '__main__':
+    main()