CODEWITHSUNDEEP
mavenspring-bootdocker-composeenvironment-variables
med.b
med.b

Reputation: 475

SpringBoot project, Environment Variable in application.yml always empty

I'm trying to run a SpringBoot project that runs with docker-compose. i started its dependencies (Redis, MongoDB ,and RabbitMQ) with docker-compose up

and i'm building the project and running it with these commands mvn clean package -DskipTests && mvn spring-boot:run

I keep having these errors :

Error processing condition on org.springframework.boot.autoconfigure.security.oauth2.client.OAuth2RestOp erationsConfiguration$RequestScopedConfiguration

Caused by: java.lang.IllegalArgumentException: Could not resolve placeholder 'OAUTH_CLIENTID' in value "${OAUTH_CLIENTID}"

In the docker-compose file, the values of the environment variables are defined in the environment section.

 environment:
      - RABBIT_HOST=rabbitstomp
      - RABBIT_USER=guest
      - RABBIT_PASS=user
      - MONGO_HOST=mongodb://localhost:27017
      - OAUTH_CLIENTID=nz-kek
      - OAUTH_CLIENT_SECRET=DzXZxeOZOJHFZIUhObSpsne
      - SSO_HOST=https://webweb.com
      - CORS_HOSTS=HOST1,HOST2
      - SES_HOST=ses
      - SES_PORT=6000
      - REDIS_HOST=localhost
      - REDIS_PORT=6379

This is how application.yml looks like : 

     spring.data.mongodb:
  database: ${DB_NAME} #notificationdb
  uri: ${MONGO_HOST}
security:
  oauth2:
    resource:
      jwk:
        key-set-uri: ${auth-server:${SSO_HOST}}/keys
      token-info-uri: ${auth-server:${SSO_HOST}}/userinfo
    client:
      client-id: ${OAUTH_CLIENTID}
          client-secret: ${OAUTH_CLIENT_SECRET}`

So when running the project without docker-compose, am i supposed to put the values in the application.yml ?

i also tried mvn spring-boot:run -Dspring-boot.run.arguments=--path.to.value=value1, but i'm not sure how the path should be with variables like key-set-uri: ${auth-server:${SSO_HOST}}/keys

Upvotes: 1

Views: 3569

Answers (2)

viniciusjssouza
viniciusjssouza

Reputation: 1275

Spring has support for providing default values in the configuration via the PlaceholderConfigurerSupport. The default value is what comes after the :. In your case, you should write:

client-id: ${OAUTH_CLIENTID:yourDevelopmentDefaultClientID}

If you use the @Value annotation to inject the values, you have support to SpEL for using expressions of the type: #{someExpression} for more complex cases.

UPDATE:

In your case, I believe you are reversing the position of the variables. The correct should be: 

key-set-uri: ${SSO_HOST:auth-server}/keys

Here is what it means: first, it will try to use the SSO_HOST environment variable, which is provided to the container through docker-compose. In case this variable is not provided to the process, Spring will use auth-server as the address of the server. It seems to me that this address is visible only inside the docker-compose network, so if you are running your app outside this network, the auth-server address will not be visible. Do you know where is the auth server? Is it another docker container? Is it running on localhost?

Some interesting reference: https://www.baeldung.com/spring-value-defaults

Upvotes: 2

Ebrahim Pasbani
Ebrahim Pasbani

Reputation: 9406

Pass env variables in docker compose as object not a list: 

environment:
  RABBIT_HOST: rabbitstomp
  RABBIT_USER: guest
  RABBIT_PASS: user
  MONGO_HOST: mongodb://localhost:27017
  OAUTH_CLIENTID: nz-kek
  OAUTH_CLIENT_SECRET: DzXZxeOZOJHFZIUhObSpsne
  SSO_HOST: https://webweb.com
  CORS_HOSTS: HOST1,HOST2
  SES_HOST: ses
  SES_PORT: 6000
  REDIS_HOST: localhost
  REDIS_PORT: 6379`

Upvotes: 0

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