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Matt Kaye 2f33dd4dbd Feat: Misc. Python improvements + Streaming Improvements (#1846 )

* fix: contextvars explicit copy

* feat: fix a ton of ruff errors

* fix: couple more ruff rules

* fix: ignore unhelpful rule

* fix: exception group in newer Python versions for improved handling

* fix: workflow docs

* feat: context docs

* feat: simple task counter

* feat: config for setting max tasks

* feat: graceful exit once worker exceeds max tasks

* fix: optional

* fix: docs

* fix: events docs + gen

* chore: gen

* fix: one more dangling task

* feat: add xdist in ci

* fix: CI

* fix: xdist fails me once again

* fix: fix + extend some tests

* fix: test cleanup

* fix: exception group

* fix: ugh

* feat: changelog

* Add Ruff linter callout to post

* refactor: clean up runner error handling

* feat: improved errors

* fix: lint

* feat: hacky serde impl

* fix: improve serde + formatting

* fix: logging

* fix: lint

* fix: unexpected errors

* fix: naming, ruff

* fix: rm cruft

* Fix: Attempt to fix namespacing issue in event waits (#1885)

* feat: add xdist in ci

* fix: attempt to fix namespacing issue in event waits

* fix: namespaced worker names

* fix: applied namespace to the wrong thing

* fix: rm hack

* drive by: namespacing improvement

* fix: delay

* fix: changelog

* fix: initial log work

* fix: more logging work

* fix: rm print cruft

* feat: use a queue to send logs

* fix: sentinel value to stop the loop

* fix: use the log sender everywhere

* fix: make streaming blocking, remove more thread pools

* feat: changelog

* fix: linting issues

* fix: broken test

* chore: bunch more generated stuff

* fix: changelog

* fix: one more

* fix: mypy

* chore: gen

* Feat: Streaming Improvements (#1886)

* Fix: Filter list improvements (#1899)

* fix: uuid validation

* fix: improve filter filtering

* fix: inner join

* fix: bug in workflow cached prop

* chore: bump

* fix: lint

* chore: changelog

* fix: separate filter queries

* feat: improve filter filtering

* fix: queries and the like

* feat: add xdist in ci

* feat: streaming test + gen

* feat: add index to stream event

* fix: rm langfuse dep

* fix: lf

* chore: gen

* feat: impl index for stream on context

* feat: tweak protos

* feat: extend test

* feat: send event index through queue

* feat: first pass + debug logging

* debug: fixes

* debug: more possible issues

* feat: generate new stream event protos

* feat: first pass at using an alternate exchange for replaying incoming stream events

* fix: exchange create timing

* fix: rm unused protos

* chore: gen

* feat: python cleanup

* fix: revert rabbit changes

* fix: unwind a bunch of cruft

* fix: optional index

* chore: gen python

* fix: event index nil handling

* feat: improve test

* fix: stream impl in sdk

* fix: make test faster

* chore: gen a ton more stuff

* fix: test

* fix: sorting helper

* fix: bug

* fix: one more ordering bug

* feat: add some tests for buffering logic

* feat: hangup test

* feat: test no buffering if no index sent

* fix: regular mutex

* fix: pr feedback

* fix: conflicts

2025-06-25 10:11:01 -04:00

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Context

The Hatchet Context class provides helper methods and useful data to tasks at runtime. It is passed as the second argument to all tasks and durable tasks.

There are two types of context classes you'll encounter:

Context - The standard context for regular tasks with methods for logging, task output retrieval, cancellation, and more
DurableContext - An extended context for durable tasks that includes additional methods for durable execution like aio_wait_for and aio_sleep_for

Context

::: context.context.Context options: inherited_members: false members: - was_skipped - task_output - was_triggered_by_event - workflow_input - lifespan - workflow_run_id - cancel - aio_cancel - done - log - release_slot - put_stream - refresh_timeout - retry_count - attempt_number - additional_metadata - parent_workflow_run_id - priority - workflow_id - workflow_version_id - task_run_errors - fetch_task_run_error

DurableContext

::: context.context.DurableContext options: inherited_members: true members: - aio_wait_for - aio_sleep_for

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Context

Context

DurableContext

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