Spring boot inject mongodb datasource

Question

I am trying to deploy a spring boot application connected to a mongodb instance to cloud foundry.

cf create-service MongoService default my-mongo
cf push myapp --no-start
cf bind-service myapp my-mongo
cf start myapp

The connection details to the mongodb instance are in the VCAP_SERVICES environment variable. When deploying my application to cloudfoundry spring boot is trying to access mongodb on localhost:27017 and obviously fails.

I would like to parse the VCAP_SERVICES environment variable, construct some mongodb connection details from it and provide this as a spring bean. Which class should I use for these configuration details?

I have solved the issue by registering a Configuration class that extends AbstractMongoConfiguration. In this class the vcap_services environment variable is parsed, and inserted into the Mongo object returned by the override mongo() method. — user152468
– user152468, Commented Jun 2, 2016 at 12:30
Please show more details how you fixed it, I am having the same problem. — JayC
– JayC, Commented Dec 21, 2016 at 16:10

Corby Page · Accepted Answer · 2016-12-23 14:46:48Z

1

With Spring Boot, you don't need to manually parse VCAP_SERVICES. If you are using MongoTemplate or MongoRepository, it will automatically connect to the bound instance.

Make sure that you have spring-boot-starter-parent identified as the parent artifact in your pom.xml.

You can add the following to your pom.xml to ensure that the cloud connector code is getting picked up:

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-cloud-connectors</artifactId>
    </dependency>

Of course, you also need the MongoDB Spring Data dependency:

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-data-mongodb</artifactId>
    </dependency>

edited Dec 23, 2016 at 14:46

answered Jun 1, 2016 at 16:05

Corby Page

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3 Comments

user152468 Over a year ago

I tried exactly this, but the app still tries to connect to localhost:27017.

JayC Over a year ago

When adding this to the POM, do I need to add any other annotations to make this work? I am having the same problem as user152469

Corby Page Over a year ago

Be sure you have included the mongodb data dependency. groupId:org.springframework.boot artifactId:spring-boot-starter-data-mongodb

Community · Accepted Answer · 2017-05-23 12:08:41Z

0

You may want to try setting up the configuration parameters, like a workaround I had to implement with MySQL, check this question.

For me it all came down to properly defining following properties:

spring:
  datasource:
    url: jdbc:mysql://${vcap.services.mydb.credentials.host}:${vcap.services.mydb.credentials.port}/${vcap.services.mydb.credentials.name}
    driver-class-name: com.mysql.jdbc.Driver
    username: ${vcap.services.mydb.credentials.user}
    password: ${vcap.services.mydb.credentials.password}

edited May 23, 2017 at 12:08

CommunityBot

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answered Jun 2, 2016 at 11:35

Lech Migdal

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