Refactor DigitalOcean modules

Fix adds refactoring of DigitalOcean modules by adding
common functionality to module_utils.

Signed-off-by: Abhijeet Kasurde <akasurde@redhat.com>

lib/ansible/module_utils/digital_ocean.py

@@ -0,0 +1,102 @@
+# This code is part of Ansible, but is an independent component.
+# This particular file snippet, and this file snippet only, is BSD licensed.
+# Modules you write using this snippet, which is embedded dynamically by Ansible
+# still belong to the author of the module, and may assign their own license
+# to the complete work.
+#
+# Copyright (c), Ansible Project 2017
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without modification,
+# are permitted provided that the following conditions are met:
+#
+#    * Redistributions of source code must retain the above copyright
+#      notice, this list of conditions and the following disclaimer.
+#    * Redistributions in binary form must reproduce the above copyright notice,
+#      this list of conditions and the following disclaimer in the documentation
+#      and/or other materials provided with the distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+# IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
+# USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+import json
+import os
+from ansible.module_utils.urls import fetch_url
+from ansible.module_utils._text import to_text
+
+
+class Response(object):
+
+    def __init__(self, resp, info):
+        self.body = None
+        if resp:
+            self.body = resp.read()
+        self.info = info
+
+    @property
+    def json(self):
+        if not self.body:
+            if "body" in self.info:
+                return json.loads(to_text(self.info["body"]))
+            return None
+        try:
+            return json.loads(to_text(self.body))
+        except ValueError:
+            return None
+
+    @property
+    def status_code(self):
+        return self.info["status"]
+
+
+class DigitalOceanHelper:
+
+    def __init__(self, module):
+        self.module = module
+        self.baseurl = 'https://api.digitalocean.com/v2'
+        self.oauth_token = None
+        self.get_do_oauth_token()
+        self.headers = {'Authorization': 'Bearer {0}'.format(self.oauth_token),
+                        'Content-type': 'application/json'}
+
+    def _url_builder(self, path):
+        if path[0] == '/':
+            path = path[1:]
+        return '%s/%s' % (self.baseurl, path)
+
+    def send(self, method, path, data=None):
+        url = self._url_builder(path)
+        data = self.module.jsonify(data)
+
+        resp, info = fetch_url(self.module, url, data=data, headers=self.headers, method=method)
+
+        return Response(resp, info)
+
+    def get(self, path, data=None):
+        return self.send('GET', path, data)
+
+    def put(self, path, data=None):
+        return self.send('PUT', path, data)
+
+    def post(self, path, data=None):
+        return self.send('POST', path, data)
+
+    def delete(self, path, data=None):
+        return self.send('DELETE', path, data)
+
+    def get_do_oauth_token(self):
+        try:
+            self.oauth_token = self.module.params['oauth_token'] or \
+                self.module.params['api_token'] or \
+                os.environ['DO_API_TOKEN'] or \
+                os.environ['DO_API_KEY'] or \
+                os.environ['OAUTH_TOKEN']
+        except KeyError as e:
+            self.module.fail_json(msg='Unable to load %s' % e.message)