1 files changed, 83 insertions, 0 deletions
diff --git a/src/pybind/mgr/dashboard/controllers/prometheus.py b/src/pybind/mgr/dashboard/controllers/prometheus.py
new file mode 100644
index 00000000..40333541
--- /dev/null
+++ b/src/pybind/mgr/dashboard/controllers/prometheus.py
@@ -0,0 +1,83 @@
+# -*- coding: utf-8 -*-
+from __future__ import absolute_import
+
+from datetime import datetime
+import json
+import requests
+
+from . import Controller, ApiController, BaseController, RESTController, Endpoint
+from ..security import Scope
+from ..settings import Settings
+from ..exceptions import DashboardException
+
+
+@Controller('/api/prometheus_receiver', secure=False)
+class PrometheusReceiver(BaseController):
+    ''' The receiver is needed in order to receive alert notifications (reports) '''
+    notifications = []
+
+    @Endpoint('POST', path='/')
+    def fetch_alert(self, **notification):
+        notification['notified'] = datetime.now().isoformat()
+        notification['id'] = str(len(self.notifications))
+        self.notifications.append(notification)
+
+
+class PrometheusRESTController(RESTController):
+    def prometheus_proxy(self, method, path, params=None, payload=None):
+        return self._proxy(self._get_api_url(Settings.PROMETHEUS_API_HOST),
+                           method, path, params, payload)
+
+    def alert_proxy(self, method, path, params=None, payload=None):
+        return self._proxy(self._get_api_url(Settings.ALERTMANAGER_API_HOST),
+                           method, path, params, payload)
+
+    def _get_api_url(self, host):
+        return host.rstrip('/') + '/api/v1'
+
+    def _proxy(self, base_url, method, path, params=None, payload=None):
+        try:
+            response = requests.request(method, base_url + path, params=params, json=payload)
+        except Exception:
+            raise DashboardException('Could not reach external API', http_status_code=404,
+                                     component='prometheus')
+        content = json.loads(response.content)
+        if content['status'] == 'success':
+            if 'data' in content:
+                return content['data']
+            return content
+        raise DashboardException(content, http_status_code=400, component='prometheus')
+
+
+@ApiController('/prometheus', Scope.PROMETHEUS)
+class Prometheus(PrometheusRESTController):
+    def list(self, **params):
+        return self.alert_proxy('GET', '/alerts', params)
+
+    @RESTController.Collection(method='GET')
+    def rules(self, **params):
+        return self.prometheus_proxy('GET', '/rules', params)
+
+    @RESTController.Collection(method='GET', path='/silences')
+    def get_silences(self, **params):
+        return self.alert_proxy('GET', '/silences', params)
+
+    @RESTController.Collection(method='POST', path='/silence', status=201)
+    def create_silence(self, **params):
+        return self.alert_proxy('POST', '/silences', payload=params)
+
+    @RESTController.Collection(method='DELETE', path='/silence/{s_id}', status=204)
+    def delete_silence(self, s_id):
+        return self.alert_proxy('DELETE', '/silence/' + s_id) if s_id else None
+
+
+@ApiController('/prometheus/notifications', Scope.PROMETHEUS)
+class PrometheusNotifications(RESTController):
+
+    def list(self, **params):
+        if 'from' in params:
+            f = params['from']
+            if f == 'last':
+                return PrometheusReceiver.notifications[-1:]
+            return PrometheusReceiver.notifications[int(f) + 1:]
+        return PrometheusReceiver.notifications