Mulesoft Insertion into Mongo DB database - mongodb

Question

I am using a Mongo DB connector to insert data into Mongo Instance located in mLab.
I am sure I am using the correct credentials since these credentials are working when I am using them through a Java code.
But here using the Mongo DB connector constantly throws me an error as can be seen below.
org.mule.api.ConnectionException: Couldn't connect with the given
credentials org.mule.api.ConnectionException: Couldn't connect with
the given credentials at
org.mule.module.mongo.MongoCloudConnector.getDatabase(MongoCloudConnector.java:1304)
at
org.mule.module.mongo.MongoCloudConnector.connect(MongoCloudConnector.java:1173)
at
org.mule.module.mongo.connectivity.MongoCloudConnectorConnectionFactory.makeObject(MongoCloudConnectorConnectionFactory.java:56)
at
org.apache.commons.pool.impl.GenericKeyedObjectPool.borrowObject(GenericKeyedObjectPool.java:1220)
at
org.mule.module.mongo.connectivity.MongoCloudConnectorConnectionManager.acquireConnection(MongoCloudConnectorConnectionManager.java:361)
at
org.mule.module.mongo.connectivity.MongoCloudConnectorConnectionManager.test(MongoCloudConnectorConnectionManager.java:444)
at
org.mule.tooling.metadata.api.utils.ConnectionTester.internalTestConnection(ConnectionTester.java:88)
at
org.mule.tooling.metadata.api.utils.ConnectionTester.testConnectionFor(ConnectionTester.java:113)
at
Is there something that I am missing here?
Below is the XML :
<?xml version="1.0" encoding="UTF-8"?>
<mule xmlns:dw="http://www.mulesoft.org/schema/mule/ee/dw" xmlns:metadata="http://www.mulesoft.org/schema/mule/metadata" xmlns:http="http://www.mulesoft.org/schema/mule/http" xmlns:mongo="http://www.mulesoft.org/schema/mule/mongo" xmlns="http://www.mulesoft.org/schema/mule/core" xmlns:doc="http://www.mulesoft.org/schema/mule/documentation"
xmlns:spring="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-current.xsd
http://www.mulesoft.org/schema/mule/core http://www.mulesoft.org/schema/mule/core/current/mule.xsd
http://www.mulesoft.org/schema/mule/http http://www.mulesoft.org/schema/mule/http/current/mule-http.xsd
http://www.mulesoft.org/schema/mule/ee/dw http://www.mulesoft.org/schema/mule/ee/dw/current/dw.xsd
http://www.mulesoft.org/schema/mule/mongo http://www.mulesoft.org/schema/mule/mongo/current/mule-mongo.xsd">
<http:listener-config name="HTTP_Listener_Configuration" host="0.0.0.0" port="8081" doc:name="HTTP Listener Configuration"/>
<http:request-config name="HTTP_Request_Configuration" host="developers.zomato.com" port="80" doc:name="HTTP Request Configuration"/>
<http:request-config name="HTTP_Request_Configuration1" host="api.mlab.com" port="80" doc:name="HTTP Request Configuration"/>
<mongo:config name="Mongo_DB" password="XXXXX" database="restaurant_data" host="ds241039.mlab.com" port="41039" doc:name="Mongo DB" username="XxXx"/>
<flow name="rest-webservice-applicationFlow">
<http:listener config-ref="HTTP_Listener_Configuration" path="/rest" allowedMethods="GET" doc:name="HTTP"/>
<http:request config-ref="HTTP_Request_Configuration" path="api/v2.1/search" method="GET" doc:name="HTTP">
<http:request-builder>
<http:query-param paramName="entity_id" value="1"/>
<http:query-param paramName="entity_type" value="city"/>
<http:header headerName="user-key" value="XXXXXXXXX"/>
</http:request-builder>
</http:request>
<dw:transform-message doc:name="Transform Message" metadata:id="13f7b603-ac1e-45b4-9950-32c39a20ee36">
<dw:input-payload mimeType="application/json"/>
<dw:set-payload><![CDATA[%dw 1.0
%output application/json
---
{
results_found: payload.results_found,
results_start: payload.results_start,
results_shown: payload.results_shown,
restaurants: payload.restaurants map ((restaurant , indexOfRestaurant) -> {
restaurant: {
R: restaurant.restaurant.R,
id: restaurant.restaurant.id,
name: restaurant.restaurant.name,
url: restaurant.restaurant.url,
location: restaurant.restaurant.location,
switch_to_order_menu: restaurant.restaurant.switch_to_order_menu,
cuisines: restaurant.restaurant.cuisines,
average_cost_for_two: restaurant.restaurant.average_cost_for_two,
price_range: restaurant.restaurant.price_range,
currency: restaurant.restaurant.currency,
offers: restaurant.restaurant.offers map ((offer , indexOfOffer) -> offer),
thumb: restaurant.restaurant.thumb,
user_rating: restaurant.restaurant.user_rating,
photos_url: restaurant.restaurant.photos_url,
menu_url: restaurant.restaurant.menu_url,
featured_image: restaurant.restaurant.featured_image,
has_online_delivery: restaurant.restaurant.has_online_delivery,
is_delivering_now: restaurant.restaurant.is_delivering_now,
deeplink: restaurant.restaurant.deeplink,
has_table_booking: restaurant.restaurant.has_table_booking,
events_url: restaurant.restaurant.events_url
}
})
}]]></dw:set-payload>
</dw:transform-message>
<mongo:json-to-dbobject doc:name="Mongo DB"/>
<mongo:insert-object config-ref="Mongo_DB" doc:name="Mongo DB" collection="restaurant"/>
</flow>
</mule>

Answer 1

The MongoDB connector uses the deprecated MONGODB-CR authentication mechanism, MLab is expecting the SCRAM-SHA-1 mechanism.
The SCRAM-SHA-1 mechanism is available in the enterprise version of Mulesoft ESB.
The connection URI configuration is available on version 4.2.0 and above. This is how you configure it:
Add the connector to pom.xml:
<dependency>
<groupId>org.mule.connectors</groupId>
<artifactId>mule-mongo-connector</artifactId>
<version>4.2.0</version>
</dependency>
Configure a connection in your flow:
<mongo:config-connection-string name="MongoDB_Config"
connectionString="mongodb://jdoe:myPass#localhost:27017?authMechanism=SCRAM-SHA-1"/>