feat: add fragment for config update

Signed-off-by: Krzysztof Piotrowski <krzysztof.piotrowski@inetum.com>

crates/extensions/c8y_mapper_ext/src/operations/handlers/config_update.rs

@@ -1,4 +1,5 @@
 use anyhow::Context;
+use c8y_api::smartrest::inventory::set_c8y_config_fragment;
 use c8y_api::smartrest::smartrest_serializer::CumulocitySupportedOperations;
 use tedge_api::commands::CommandStatus;
 use tedge_api::commands::ConfigUpdateCmd;
@@ -47,14 +48,23 @@ impl OperationContext {
                 extra_messages: vec![],
             }),
             CommandStatus::Successful => {
+                let config_fragment = MqttMessage::new(
+                    sm_topic,
+                    set_c8y_config_fragment(
+                        &command.payload.config_type,
+                        &command.payload.remote_url,
+                        Default::default(), // Config update payload is not provided with name field
+                    ),
+                );
+
                 let smartrest_operation_status = self.get_smartrest_successful_status_payload(
                     CumulocitySupportedOperations::C8yDownloadConfigFile,
                     cmd_id,
                 );
                 let c8y_notification = MqttMessage::new(sm_topic, smartrest_operation_status);
 
                 Ok(OperationOutcome::Finished {
-                    messages: vec![c8y_notification],
+                    messages: vec![config_fragment, c8y_notification],
                 })
             }
             CommandStatus::Failed { reason } => Err(anyhow::anyhow!(reason).into()),
@@ -371,6 +381,13 @@ mod tests {
             .await
             .expect("Send failed");
 
+        // Expect `120` smartrest message on `c8y/s/us`.
+        assert_received_contains_str(
+            &mut mqtt,
+            [("c8y/s/us", "120,path/type/A,http://www.my.url")],
+        )
+        .await;
+
         // Expect `503` smartrest message on `c8y/s/us`.
         assert_received_contains_str(&mut mqtt, [("c8y/s/us", "503,c8y_DownloadConfigFile")]).await;
     }
@@ -408,6 +425,13 @@ mod tests {
             .await
             .expect("Send failed");
 
+        // Expect `120` smartrest message on `c8y/s/us`.
+        assert_received_contains_str(
+            &mut mqtt,
+            [("c8y/s/us/child1", "120,typeA,http://www.my.url")],
+        )
+        .await;
+
         // Expect `503` smartrest message on child topic.
         assert_received_contains_str(
             &mut mqtt,
@@ -443,6 +467,13 @@ mod tests {
             .await
             .expect("Send failed");
 
+        // Expect `120` smartrest message on `c8y/s/us`.
+        assert_received_contains_str(
+            &mut mqtt,
+            [("c8y/s/us", "120,path/type/A,http://www.my.url")],
+        )
+        .await;
+
         // Expect `503` smartrest message on `c8y/s/us`.
         assert_received_contains_str(&mut mqtt, [("c8y/s/us", "506,1234")]).await;
     }