roryq / spanner-emulator

Docker image that wraps the official Google Cloud Spanner Emulator image which creates an instance/database on startup

Google Cloud Spanner Emulator

This repository wraps the official Google Cloud Spanner Emulator with a convenience function to create an spanner instance on startup.

Usage

Set the SPANNER_DATABASE_ID, SPANNER_INSTANCE_ID and SPANNER_PROJECT_ID environment variables when running the image. You can omit the database id if you just need an instance.

docker run --env SPANNER_DATABASE_ID=db \
  --env SPANNER_INSTANCE_ID=inst \
  --env SPANNER_PROJECT_ID=proj \
  -p 9010:9010 -p 9020:9020 \
  roryq/spanner-emulator:latest

---

Thanks to jacksonjesse/pubsub-emulator for the idea.

spanner-emulator's Issues

1.5.0 release stuck in restart loop

The 1.5.0 release gets stuck in a restart loop on container initialization. The only log it outputs is "Attempting to create instance ".

Downgrading to 1.4.8 resolved the issue.

By the way, thanks for this wonderfully useful Docker image!

Add verification step between build and publish

Sanity check the emulator is running

getting connection refused on emulator server

Running the following command

docker run --env SPANNER_DATABASE_ID=test-database --env SPANNER_INSTANCE_ID=test-instance --env SPANNER_PROJECT_ID=test-project roryq/spanner-emulator:latest

I get the following output:

2022/01/12 21:17:37 gateway.go:140: Cloud Spanner emulator running.
2022/01/12 21:17:37 gateway.go:141: REST server listening at 0.0.0.0:9020
2022/01/12 21:17:37 gateway.go:142: gRPC server listening at 0.0.0.0:9010
2022/01/12 21:17:37 instance created
2022/01/12 21:17:37 attempting to create database test-database
2022/01/12 21:17:37 database created

Everything seems fine but I can't reach any request to emulator server.

curl --request GET -L "localhost:9020/v1/projects/project-test/instances"
curl: (7) Failed to connect to localhost port 9020: Refused connection

Running my application tests the same problem happens. In this case, the reported error is the following:

UNAVAILABLE: The connection string 'cloudspanner://localhost:9010/projects/test-project/instances/test-instance/databases/test-database;usePlainText=true' contains host 'localhost:9010', but no running emulator or other server could be found at that address.
Please check the connection string and/or that the emulator is running.

Any tip of what is happening here?

Error with version 1.4.6

Hello
I am getting an error with the version 1.4.6. Am I missing something?

mandhara@X447T6RJFM ~ % docker run --env SPANNER_DATABASE_ID=db \
  --env SPANNER_INSTANCE_ID=inst \
  --env SPANNER_PROJECT_ID=proj \
  -p 9010:9010 -p 9020:9020 \
  hub.artifactory.gcp.anz/roryq/spanner-emulator:1.4.6
exec ./spanner-emulator: no such file or directory