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airflow/java-sdk/capabilities.yaml
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Jason(Zhe-You) Liu 719a685079 Add consolidated Language SDK compatibility matrix (#71757)
* Add consolidated Language SDK compatibility matrix

Users comparing Language SDKs had to read each SDK's README, and the
per-SDK manifests lagged behind what the SDKs actually ship. One generated
matrix, split by authoring mode, shows what each SDK supports for a Dag
definition and for a Python Dag with stub TaskHandler.

* Add callbacks, listeners and provider operators to the SDK matrix

Users comparing Language SDKs could not see where callbacks, Airflow's
listener API and Python provider operators stand, because the matrix had
no dimension for any of them. Callbacks ask different things of an SDK per
authoring mode, so they are declared per mode like the other shared
capabilities.

* Address review on the Language SDK matrix generator

The umbrella capability and the authoring mode both read `dag-definition`,
which gives one name two meanings in the same manifest. A row's kind also
belongs in its entry key: state and capability names happen not to collide
today, so the lookup worked by accident rather than by design.

* Rename the dynamic-task-mapping dimension to mapped-tasks

The dimension is about whether a task can be a mapped task, which the
shorter name says directly and keeps the matrix row readable next to the
other task-level dimensions.

* Split callbacks into Dag-level and task-level dimensions

The callbacks of a Python Dag run whichever SDK executes its stub tasks, so
``dag-callbacks`` is a Dag-definition concern only, while ``task-callbacks``
stays declared per authoring mode. Drop ``provider-operators`` until ADR-0009
is accepted, and reuse the shared ``capabilities_doc`` fixture in the per-SDK
README tests.

* Fix the hook attribution in the matrix generation diagram

``index.rst`` is written by ``update-lang-sdk-central-matrix`` from every SDK
in ``LANG_SDKS``, not by the per-SDK README hook.

---------
2026-10-23 22:28:33 +08:00

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YAML

# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied. See the License for the
# specific language governing permissions and limitations
# under the License.
---
sdk: java
min_airflow_version: "3.4.0"
# Keep in sync with airflowSupervisorSchemaVersion in gradle.properties, which is what stamps the
# JAR manifest. The render hook fails if the two disagree.
supervisor_schema_version: "2026-10-30"
# The runtime terminates a task with SucceedTask, RetryTask, DeferTask, or TaskState
# (failed/skipped/removed); it does not yet emit RescheduleTask or AwaitInputTask.
states:
success:
supported: true
since: "3.4.0"
sdk_version: "1.0.0"
failed:
supported: true
since: "3.4.0"
sdk_version: "1.0.0"
up_for_retry:
supported: true
since: "3.4.0"
sdk_version: "1.0.0"
note: "RetryTask"
skipped:
supported: true
since: "3.4.0"
sdk_version: "1.0.0"
note: "a TriggerDagRun task that skips an existing run"
deferred:
supported: true
since: "3.4.0"
sdk_version: "1.0.0"
note: "a TriggerDagRun task that waits with deferrable"
up_for_reschedule:
supported: false
note: "runtime does not emit RescheduleTask yet"
awaiting_input:
supported: false
note: "runtime does not emit AwaitInputTask yet"
removed:
supported: true
since: "3.4.0"
sdk_version: "1.0.0"
# Runtime capabilities apply to a task body in both authoring modes.
capabilities:
task-logging:
supported: true
since: "3.4.0"
sdk_version: "1.0.0"
note: "SLF4J + JPL bridged to the task log"
xcom-read-write:
supported: true
since: "3.4.0"
sdk_version: "1.0.0"
connection-read:
supported: true
since: "3.4.0"
sdk_version: "1.0.0"
variable-read-write:
supported: true
since: "3.4.0"
sdk_version: "1.0.0"
self-contained-bundle:
supported: true
since: "3.4.0"
sdk_version: "1.0.0"
note: "Airflow metadata embedded in the jar artifact"
retry-policy:
supported: false
note: "no task-facing retry-policy API yet"
task-state-store:
supported: true
since: "3.4.0"
sdk_version: "1.0.0"
note: "Client.getTaskStateStore() get/set/delete/clear"
asset-state-store:
supported: false
note: "no task-facing asset state-store API yet"
asset-event-emit:
supported: false
note: "runtime does not emit asset events yet"
asset-event-read:
supported: false
note: "no task-facing asset-event API yet"
object-store:
supported: false
note: "no object-storage API yet"
listeners:
supported: false
note: "no hook into the Python listener API, so a task emits no OpenLineage facets of its own"
# Dag definition: the whole Dag is declared in the SDK's language.
dag-definition-authoring:
supported: true
since: "3.4.0"
sdk_version: "1.0.0"
dag-args:
supported: true
since: "3.4.0"
sdk_version: "1.0.0"
task-args:
supported: true
since: "3.4.0"
sdk_version: "1.0.0"
dag-params:
supported: false
dag-callbacks:
supported: false
explicit-dependencies:
supported: true
since: "3.4.0"
sdk_version: "1.0.0"
note: "before / after, or @Airflow.Deps"
edge-labels:
supported: true
since: "3.4.0"
sdk_version: "1.0.0"
note: "Label.of(text).on(task)"
taskflow-dependencies:
supported: true
since: "3.4.0"
sdk_version: "1.0.0"
task-group:
supported: true
since: "3.4.0"
sdk_version: "1.0.0"
task-loops:
supported: false
if-else-branching:
supported: true
since: "3.4.0"
sdk_version: "1.0.0"
note: "DagDef.If or @Airflow.If"
switch-case-branching:
supported: true
since: "3.4.0"
sdk_version: "1.0.0"
note: "DagDef.Switch or @Airflow.Switch"
trigger-dag-run:
supported: true
since: "3.4.0"
sdk_version: "1.0.0"
note: "TriggerDagRun"
dynamic-dag-generation:
supported: true
since: "3.4.0"
sdk_version: "1.0.0"
human-in-the-loop:
supported: false
dag-test:
supported: false
asset-definition:
supported: false
asset-scheduling:
supported: false
# Python Dag with stub TaskHandler.
mixed-lang-stub-target:
supported: true
since: "3.4.0"
sdk_version: "1.0.0"
note: "@task.stub"
taskflow-binding:
supported: true
since: "3.4.0"
sdk_version: "1.0.0"
note: "mapped stubs excluded"
# Shared by both authoring modes, so declared once per mode.
mapped-tasks:
dag-definition:
supported: false
stub-task-handler:
supported: false
note: "Airflow does not bind arguments to mapped stubs yet"
asset-inlets-outlets:
dag-definition:
supported: false
stub-task-handler:
supported: false
note: "runtime does not report task outlets yet"
task-callbacks:
dag-definition:
supported: false
note: "no SDK-defined task callbacks"
stub-task-handler:
supported: false
note: "a Python-declared task callback does not run for a stub task"