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docs(ingest): inherit capabilities from superclasses #9174

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Nov 6, 2023
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docs(ingest): inherit capabilities from superclasses #9174

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e605e27
docs(ingest): inherit capabilities from superclasses
hsheth2 Nov 3, 2023
3381d5f
fix lint
hsheth2 Nov 3, 2023
f45e3cc
fix airflow tests
hsheth2 Nov 3, 2023
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4 changes: 4 additions & 0 deletions metadata-ingestion-modules/airflow-plugin/setup.py
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Original file line number Diff line number Diff line change
Expand Up @@ -101,6 +101,10 @@ def get_long_description():
f"acryl-datahub[testing-utils]{_self_pin}",
# Extra requirements for loading our test dags.
"apache-airflow[snowflake]>=2.0.2",
# Connexion's new version breaks Airflow:
# See https://github.com/apache/airflow/issues/35234.
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Not a big deal but the period messes up the link on github

# TODO: We should transition to using Airflow's constraints file.
"connexion<3",
# https://github.com/snowflakedb/snowflake-sqlalchemy/issues/350
# Eventually we want to set this to "snowflake-sqlalchemy>=1.4.3".
# However, that doesn't work with older versions of Airflow. Instead
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12 changes: 11 additions & 1 deletion metadata-ingestion/src/datahub/ingestion/api/decorators.py
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Expand Up @@ -93,10 +93,20 @@ def capability(
"""

def wrapper(cls: Type) -> Type:
if not hasattr(cls, "__capabilities"):
if not hasattr(cls, "__capabilities") or any(
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Can we just use single underscore instead of double underscore here? I think that's why we have to do this in the first place: https://www.scaler.com/topics/double-underscore-python/

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in this case, we actually do want double underscore to signal that it's specific to that class and not subclasses, since the inheritance piece of it we do ourselves using copies to avoid mutating the same underlying object

also the double underscores don't actually get mangled here because we're not within a class context

# It's from this class and not a superclass.
cls.__capabilities is getattr(base, "__capabilities", None)
for base in cls.__bases__
):
cls.__capabilities = {}
cls.get_capabilities = lambda: cls.__capabilities.values()

# If the superclasses have capability annotations, copy those over.
for base in cls.__bases__:
base_caps = getattr(base, "__capabilities", None)
if base_caps:
cls.__capabilities.update(base_caps)

cls.__capabilities[capability_name] = CapabilitySetting(
capability=capability_name, description=description, supported=supported
)
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8 changes: 7 additions & 1 deletion metadata-ingestion/src/datahub/ingestion/source/state/stateful_ingestion_base.py
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Expand Up @@ -15,11 +15,12 @@
from datahub.configuration.time_window_config import BaseTimeWindowConfig
from datahub.configuration.validate_field_rename import pydantic_renamed_field
from datahub.ingestion.api.common import PipelineContext
from datahub.ingestion.api.decorators import capability
from datahub.ingestion.api.ingestion_job_checkpointing_provider_base import (
IngestionCheckpointingProviderBase,
JobId,
)
from datahub.ingestion.api.source import Source, SourceReport
from datahub.ingestion.api.source import Source, SourceCapability, SourceReport
from datahub.ingestion.source.state.checkpoint import Checkpoint, StateType
from datahub.ingestion.source.state.use_case_handler import (
StatefulIngestionUsecaseHandlerBase,
Expand Down Expand Up @@ -177,6 +178,11 @@ class StatefulIngestionReport(SourceReport):
pass


@capability(
SourceCapability.DELETION_DETECTION,
"Optionally enabled via `stateful_ingestion.remove_stale_metadata`",
supported=True,
)
class StatefulIngestionSourceBase(Source):
"""
Defines the base class for all stateful sources.
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