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Allow services to be bound to a project like bluemix applications where the credentials are passed in via VCAP_SERVICES

Couldn’t we follow the same pattern as Bluemix apps where services would be bound to the app (DSX project) and use the VCAP_SERVICES environment variable?

vcap_services = os.getenv("VCAP_SERVICES")
vcap = json.loads(vcap_services)

# Cloudant details

cloudant_credentials = vcap['cloudantNoSQLDB'][0]['credentials']

CL_HOST = cloudant_credentials['host']
CL_USER = cloudant_credentials['username']
CL_PASS = cloudant_credentials['password']
CL_URL = cloudant_credentials['url']

  • chris snow
  • Aug 17 2017
  • Under Consideration
Role Summary
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  • chris snow commented
    August 17, 2017 12:21

    It may make most sense to apply services to the spark service so that we can still access the vcap_services variable from a spark submit job (I.e. Not using Dsx)

  • chris snow commented
    August 17, 2017 12:21

    Here's an example java (spring) config for connecting to a data source via vcap services:

    public class Configuration {
    @Configuration
    @Profile("cloud")
    static class CloudConfiguration {

    @Bean
    public DataSource dataSource() {
    CloudFactory cloudFactory = new CloudFactory();
    Cloud cloud = cloudFactory.getCloud();
    String serviceID = cloud.getServiceID();
    return cloud.getServiceConnector(serviceID, DataSource.class, null);
    }
    }
    ...

    https://docs.cloudfoundry.org/buildpacks/java/spring-service-bindings.html#cloud-profiles

  • chris snow commented
    August 17, 2017 12:21

    @dejan is there an interim solution we could provide where a field is provided in project settings for pasting a VCAP_SERVICES json string and then setting the VCAP_SERVICES environment variable based on that? We could maybe put this in a section of project settings called advanced.

  • Dejan Glozic commented
    August 17, 2017 12:21

    This already exists in a rudimentary form. Projects already have certain services (Spark, Machine Learning) that are bound to projects so that all project members can use them. Notebooks use this today, and so does the upcoming Machine Learning model builder. We are going to push more in this direction in the future.

  • Sanjay Joshi commented
    August 17, 2017 12:21

    Love embracement of loose coupling !

  • Daniel Debrunner commented
    August 17, 2017 12:21

    Exactly what I need!

  • chris snow commented
    August 17, 2017 12:21

    The benefits of this approach:

    - same code can be used in notebooks and bluemix apps
    - variables aren't hardcoded into notebooks

  • Philippe GREGOIRE commented
    August 28, 2018 14:44

    Getting access to `project-lib` tokens would allow to then get access to other resources such as COS objects and Connection artifacts too.
    Currently one has to explicitly paste that in the notebook code even though it would be a %hidden_cell

  • Guest commented
    September 7, 2018 14:43