pass_vars_docker.rst

Passing variables to Docker

:pywishbone.function.template.environment <wishbone.function.template.environment.Environment> is a template function to access and use environment variables in your bootstrap file. When using the wishbone executable then the env() template function is loaded automatically.

This might be practical when using the containerized version of Wishbone.

Consider following bootstrap file:

modules:
  input:
    module: wishbone.module.input.generator
    arguments:
      payload: '{{env("message")}}'

  output:
    module: wishbone.module.output.stdout

routingtable:
  - input.outbox -> output.inbox

We can bootstrap a Wishbone container using following command:

$ docker run -t -i --env message="hello world" -v $(pwd)/hello_world.yaml:/tmp/bootstrap.yaml docker.io/smetj/wishbone:develop start --config /tmp/bootstrap.yaml
Instance started in foreground with pid 1
{'cloned': False, 'bulk': False, 'data': 'hello world', 'errors': {}, 'tags': [], 'timestamp': 1511299095.2465549, 'tmp': {}, 'ttl': 253, 'uuid_previous': [], 'uuid': '2e6f6a44-50ef-4517-a727-0f3e0af0e6ab'}
{'cloned': False, 'bulk': False, 'data': 'hello world', 'errors': {}, 'tags': [], 'timestamp': 1511299096.2474735, 'tmp': {}, 'ttl': 253, 'uuid_previous': [], 'uuid': '5c18eb80-5529-4f01-aa33-8f7286bc4769'}
{'cloned': False, 'bulk': False, 'data': 'hello world', 'errors': {}, 'tags': [], 'timestamp': 1511299097.2487144, 'tmp': {}, 'ttl': 253, 'uuid_previous': [], 'uuid': '39edee41-bba1-4b81-9251-98b411f09918'}
{'cloned': False, 'bulk': False, 'data': 'hello world', 'errors': {}, 'tags': [], 'timestamp': 1511299098.2498908, 'tmp': {}, 'ttl': 253, 'uuid_previous': [], 'uuid': '52f9709f-de1d-467d-8f53-f9c311e2bcc9'}
{'cloned': False, 'bulk': False, 'data': 'hello world', 'errors': {}, 'tags': [], 'timestamp': 1511299099.2510643, 'tmp': {}, 'ttl': 253, 'uuid_previous': [], 'uuid': '9443e1d0-dddc-41a8-bd8c-be291881876c'}