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  4. Bootstrapping Spring Cloud Config Server MongoDB

Bootstrapping Spring Cloud Config Server MongoDB

Bootstrapping a configuration server with Spring Cloud Config Server MongoDB is just a matter of three steps. Learn what they are and look at a usage example!

Venil Noronha user avatar by
Venil Noronha
·
Sep. 05, 17 · Tutorial
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Spring Cloud Config Server MongoDB enables the seamless integration of the regular Spring Cloud Config Server with MongoDB to manage external properties for applications across all environments.

A Simple Config Server

Bootstrapping a configuration server with Spring Cloud Config Server MongoDB is just a matter of the following three steps.

  1. Configure your pom.xml:

    <dependencies>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-config-server-mongodb</artifactId>
            <version>0.0.2.BUILD-SNAPSHOT</version>
        </dependency>
    </dependencies>
    
    <repositories>
        <repository>
            <id>spring-snapshots</id>
            <name>Spring Snapshots</name>
            <url>https://repo.spring.io/libs-snapshot-local</url>
            <snapshots>
                <enabled>true</enabled>
            </snapshots>
        </repository>
        <repository>
            <id>ojo-snapshots</id>
            <name>OJO Snapshots</name>
            <url>https://oss.jfrog.org/artifactory/libs-snapshot</url>
            <snapshots>
                <enabled>true</enabled>
            </snapshots>
        </repository>
    </repositories>
  2. Create a standard Spring Boot application with the EnableMongoConfigServer annotation:

    @SpringBootApplication
    @EnableMongoConfigServer
    public class Application {
    
        public static void main(String[] args) {
            SpringApplication.run(Application.class, args);
        }
    
    }
  3. Configure the application's spring.data.mongodb.* properties in application.yml:

    spring:
      data:
        mongodb:
          uri: mongodb://localhost/config-db

Usage

We can now add configuration documents to MongoDB and access it via the REST API.

  1. Add configuration documents to MongoDB:

    use config-db;
    
    db.gateway.insert({
      "label": "master",
      "profile": "prod",
      "source": {
        "user": {
          "max-connections": 1,
          "timeout-ms": 3600
        }
      }
    });
  2. Access it by invoking  http://localhost:8080/master/gateway-prod.properties:

    user.max-connections: 1.0
    user.timeout-ms: 3600.0

Spring Cloud Config Client-backed components can be configured to automatically load configuration from MongoDB by leveraging Spring Cloud Config Server MongoDB. See here for an example!

Like it? Give the project a star on GitHub. You can also comment below. All feedback is welcome!

Spring Cloud Spring Framework MongoDB

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