Set mqtt TLS info explicitly

Signed-off-by: Kipchirchir Sigei <[email protected]>

docker/onadata-uwsgi/Dockerfile.ubuntu

@@ -73,9 +73,11 @@ RUN apt-get install -y --no-install-recommends \
         openjdk-11-jre-headless \
         libpcre3 \
         libpcre3-dev \
+        ca-certificates \
     && apt-get autoremove -y \
     && apt-get clean -y \
-    && rm -rf /var/lib/apt/lists/*
+    && rm -rf /var/lib/apt/lists/* \
+    && update-ca-certificates --fresh
 
 # Create OnaData user and add to tty group
 RUN useradd -G tty -m onadata

onadata/apps/messaging/backends/mqtt.py

@@ -9,7 +9,7 @@
 
 from django.conf import settings
 
-from paho.mqtt import publish
+import paho.mqtt.client as mqttClient
 
 from onadata.apps.logger.models import XForm
 from onadata.apps.messaging.backends.base import BaseBackend
@@ -151,14 +151,12 @@ def send(self, instance):
         """
         topic = self.get_topic(instance)
         payload = get_payload(instance)
-        # send it
 
-        return publish.single(
-            topic,
-            payload=payload,
-            hostname=self.host,
-            port=self.port,
-            tls=self.cert_info,
-            qos=self.qos,
-            retain=self.retain,
-        )
+        # send it
+        client = mqttClient.Client()
+        if self.cert_info:
+            client.tls_set(**self.cert_info)
+        client.connect(self.host, self.port)
+        client.publish(topic, payload, self.qos, self.retain)
+        client.disconnect()
+        return True