Unable to retrieve VCAP_SERVICES environment variable after binding to a service

[Dave Chen]

Hi,

I am following the this wiki: http://docs.cloudfoundry.org/buildpacks/java/spring-service-bindings.html to read the VCAP_SERVICES environment variable.

We have a custom service (mk_service) which is deployed to marketplace. I bind my app to the mk_service however I am unable to retrieve the property cloud.services.{service-name}.connection.uri from the cf vcap_service. The value I am getting back is NULL.

Here is what I did:

cf cs 'mk_service' 'Basic ACS Plan' dave-service

cf push dave-sample-app -p target/springmvc-api-sample-2.0.0-SNAPSHOT.jar

cf bs dave-sample-app dave-service

cf restart dave-sample-app

When I do:

cf env dave-sample-app

I see this, the uri is showing in the

VCAP_SERVICE

System-Provided: {

"VCAP_SERVICES": { "mk_service": [ { "credentials": { "uri": "http://my-stating.ice.ge.com" }, "label": "mk_service", "name": "dave-service", "plan": "Basic ACS Plan", "tags": [] } ],

Below is the code snippet I use to retrieve the uri value

       CloudFactory cloudFactory = new CloudFactory();

        Cloud cloud = cloudFactory.getCloud();

        Properties cloudProperties = cloud.getCloudProperties();

        System.out.println(cloudProperties.getProperty("cloud.services.dave-service.connection.uri"));

I dig more into it and find out somehow the cloudProperties are not return the "cloud.services.dave-service.connection.uri" property. The cloudProperties only contains the "cloud.services.dave-service.id".

Does anyone know what I am missing?

Thanks,

Dave

[Josh Ghiloni]

try cloud.services.dave-service.credentials.uri. I think the "connection" segment was just a typo.

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[Dave Chen]

Hi Josh,

Thanks for the reply, I tried cloud.services.dave-service.credentials.uri it did not work either. The problem I think is the uri is not returning from cloud.getCloudProperties(). 

Below is the list of the keys from  cloud.getCloudProperties():

2015-03-14T21:26:27.02-0700 [App/0]   OUT cloud.application.state_timestamp

2015-03-14T21:26:27.02-0700 [App/0]   OUT cloud.application.uris

2015-03-14T21:26:27.02-0700 [App/0]   OUT cloud.application.limits

2015-03-14T21:26:27.02-0700 [App/0]   OUT cloud.application.version

2015-03-14T21:26:27.02-0700 [App/0]   OUT cloud.application.name

2015-03-14T21:26:27.02-0700 [App/0]   OUT cloud.application.application_id

2015-03-14T21:26:27.02-0700 [App/0]   OUT cloud.application.application_uris

2015-03-14T21:26:27.02-0700 [App/0]   OUT cloud.application.started_at_timestamp

2015-03-14T21:26:27.02-0700 [App/0]   OUT cloud.application.instance_id

2015-03-14T21:26:27.02-0700 [App/0]   OUT cloud.application.space_name

2015-03-14T21:26:27.02-0700 [App/0]   OUT cloud.application.application_name

2015-03-14T21:26:27.02-0700 [App/0]   OUT cloud.application.application_version

2015-03-14T21:26:27.02-0700 [App/0]   OUT cloud.services.null.id

2015-03-14T21:26:27.02-0700 [App/0]   OUT cloud.application.started_at

2015-03-14T21:26:27.02-0700 [App/0]   OUT cloud.application.start

2015-03-14T21:26:27.03-0700 [App/0]   OUT cloud.application.port

2015-03-14T21:26:27.03-0700 [App/0]   OUT cloud.application.instance-id

2015-03-14T21:26:27.03-0700 [App/0]   OUT cloud.services.dave-service.id

2015-03-14T21:26:27.03-0700 [App/0]   OUT cloud.application.host

2015-03-14T21:26:27.03-0700 [App/0]   OUT cloud.application.app-id

2015-03-14T21:26:27.03-0700 [App/0]   OUT cloud.application.instance_index

2015-03-14T21:26:27.03-0700 [App/0]   OUT cloud.application.space_id

[Dave Chen]

And this the section from the cloud foundry wiki: http://docs.cloudfoundry.org/buildpacks/java/spring-service-bindings.html

If the service exposed the credentials as a single uri field, then the following properties would be set up:

cloud.services.my-postgres.connection.uri
cloud.services.my-postgres.plan
cloud.services.my-postgres.type

[Josh Ghiloni]

Do you have a service info creator for that service type? It might be easier to just do System.getenv("VCAP_SERVICES") and parse it manually.

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[Shannon Coen]

Did you restage your app after binding? This must be done in order for the env vars to be updated in the app container.

[Dave Chen]

Hi Josh,

Yes, that's the problem. We need to add a ServiceInfo creator for our service.

Thanks,

Dave