m1m6 / java-docs-samples

java-docs-samples

This is a repository that contains java code snippets on Cloud Platform Documentation.

The repo is organized as follows:

• App Engine Standard
  • TaskQueue
  • Unit Tests
• App Engine Flexible
• Compute Engine

Technology Samples:

• Bigquery
• Datastore
• Endpoints
• Identity-Aware Proxy
• Key Management Service
• Logging
• Monitoring
• Natural Language
• PubSub
• Cloud Spanner
• Speech
• Cloud Storage
• Translate
• Vision

Credentials Example

The documentation for Application Default Credentials.

BigQuery bigquery = BigQueryOptions.getDefaultInstance().getService();

The client library looks for credentials using the following rules:

1. GOOGLE_APPLICATION_CREDENTIALS environment variable, pointing to a service account key JSON file path.
2. Cloud SDK credentials gcloud auth application-default login
3. App Engine standard environment credentials.
4. Compute Engine credentials.

You can override this behavior using setCredentials in BigQueryOptions.newBuilder() by adding setCredentials(Credentials credentials) from ServiceOptions.builder and Credentials.