Add, init and config performance platform client to prepare/upload daily notification stats

app/clients/performance_platform/performance_platform_client.py

@@ -0,0 +1,57 @@
+import base64
+import json
+from requests import request
+
+from flask import current_app
+
+
+class PerformancePlatformClient:
+
+    def init_app(self, app):
+        self.active = app.config.get('PERFORMANCE_PLATFORM_ENABLED')
+        if self.active:
+            self.bearer_token = app.config.get('PERFORMANCE_PLATFORM_TOKEN')
+            self.performance_platform_url = current_app.config.get('PERFORMANCE_PLATFORM_URL')
+
+    def send_performance_stats(self, date, channel, count, period):
+        if self.active:
+            payload = {
+                '_timestamp': date,
+                'service': 'govuk-notify',
+                'channel': channel,
+                'count': count,
+                'dataType': 'notifications',
+                'period': period
+            }
+            self._add_id_for_payload(payload)
+            self._send_stats_to_performance_platform(payload)
+
+    def _send_stats_to_performance_platform(self, payload):
+        headers = {
+            'Content-Type': "application/json",
+            'Authorization': 'Bearer {}'.format(self.bearer_token)
+        }
+        resp = request(
+            "POST",
+            self.performance_platform_url,
+            data=json.dumps(payload),
+            headers=headers
+        )
+
+        if resp.status_code != 200:
+            current_app.logger.error(
+                "Performance platform update request failed with {} '{}'".format(
+                    resp.status_code,
+                    resp.json())
+            )
+
+    def _add_id_for_payload(self, payload):
+        payload_string = '{}{}{}{}{}'.format(
+            payload['_timestamp'],
+            payload['service'],
+            payload['channel'],
+            payload['dataType'],
+            payload['period']
+        )
+        _id = base64.b64encode(payload_string.encode('utf-8'))
+        payload.update({'_id': _id.decode('utf-8')})