Runtime Variables

Available Runtime Variables

In order to access information about the runtime while running a task, you can use the context value.

context includes important contextual information about the runtime, like the current task_id and callback_url.

Field Name	Purpose
`container_id`	Unique identifier for a container
`stub_id`	Identifier for a stub
`stub_type`	Type of the stub (function, endpoint, taskqueue, etc)
`callback_url`	URL called when the task status changes
`task_id`	Identifier for the specific task
`timeout`	Maximum time allowed for the task to run (seconds)
`on_start_value`	Any values returned from the `on_start` function
`bind_port`	Port number to bind a service to
`python_version`	Version of Python to be used

Any of the fields above can be accessed on the context variable:

from beam import task_queue

@task_queue()
def handler(context):
    task_id = context.task_id
    return {}

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