Can't call public method of non-public class: public (Google gcloud library)

Question

I am attempting to use the gcloud library.

(ns firengine.state
  (:import
   [com.google.cloud AuthCredentials]
   [com.google.cloud.datastore DatastoreOpti         


        

Answer 1

As Shlomi said, that's a long running bug. Following the advice of Noam Ben Ari on the clj-jira, I've managed the circumvent the issue by writing a small java class that wraps the client creation. I can then use that directly from my clj code.

package pubsub_echo.pubsub;

import com.google.cloud.AuthCredentials;
import com.google.cloud.pubsub.PubSub;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;

public class GCloudPubSub {

    public PubSub getClient() throws FileNotFoundException, IOException {
        PubSubOptions.Builder optionsBuilder = PubSubOptions.builder();
        ClassLoader classLoader = getClass().getClassLoader();
        FileInputStream authStream = new FileInputStream(classLoader.getResource("SERVICE_ACCOUNT.json").getPath());
        AuthCredentials creds = AuthCredentials.createForJson(authStream);

        return optionsBuilder
            .authCredentials(creds)
            .projectId("PROJECT_ID")
            .build()
            .service();
    }

}

For guidance on adding Java compilation to your project:

https://github.com/technomancy/leiningen/blob/master/doc/MIXED_PROJECTS.md