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feat(ingestion/trino): Add sibling support in ingestion #9853

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8 changes: 8 additions & 0 deletions metadata-ingestion/docs/sources/trino/trino_recipe.yml
Original file line number Diff line number Diff line change
Expand Up @@ -13,6 +13,14 @@ source:
# options:
# connect_args:
# http_scheme: http

# Optional -- A mapping of trino catalog to its connector details like connector database, env and platform instance.
# This configuration is used to ingest lineage of datasets to connectors. Use catalog name as key.
# catalog_to_connector_details:
# catalog_name:
# connector_database: db_name
# platform_instance: cloud_instance
# env: DEV

sink:
# sink configs
194 changes: 187 additions & 7 deletions metadata-ingestion/src/datahub/ingestion/source/sql/trino.py
Original file line number Diff line number Diff line change
@@ -1,7 +1,8 @@
import functools
import json
import uuid
from textwrap import dedent
from typing import Any, Dict, List, Optional
from typing import Any, Dict, Iterable, List, Optional, Union

import sqlalchemy
import trino
Expand All @@ -16,6 +17,12 @@
from trino.sqlalchemy import datatype
from trino.sqlalchemy.dialect import TrinoDialect

from datahub.configuration.source_common import (
EnvConfigMixin,
PlatformInstanceConfigMixin,
)
from datahub.emitter.mce_builder import make_dataset_urn_with_platform_instance
from datahub.emitter.mcp import MetadataChangeProposalWrapper
from datahub.ingestion.api.common import PipelineContext
from datahub.ingestion.api.decorators import (
SourceCapability,
Expand All @@ -25,12 +32,23 @@
platform_name,
support_status,
)
from datahub.ingestion.api.workunit import MetadataWorkUnit
from datahub.ingestion.extractor import schema_util
from datahub.ingestion.source.sql.sql_common import (
SQLAlchemySource,
SqlWorkUnit,
register_custom_type,
)
from datahub.ingestion.source.sql.sql_config import BasicSQLAlchemyConfig
from datahub.ingestion.source.sql.sql_config import (
BasicSQLAlchemyConfig,
SQLCommonConfig,
)
from datahub.metadata.com.linkedin.pegasus2avro.common import Siblings
from datahub.metadata.com.linkedin.pegasus2avro.dataset import (
DatasetLineageType,
Upstream,
UpstreamLineage,
)
from datahub.metadata.com.linkedin.pegasus2avro.schema import (
MapTypeClass,
NumberTypeClass,
Expand All @@ -42,6 +60,19 @@
register_custom_type(datatype.MAP, MapTypeClass)
register_custom_type(datatype.DOUBLE, NumberTypeClass)


KNOWN_CONNECTOR_PLATFORM_MAPPING = {
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"clickhouse": "clickhouse",
"hive": "hive",
"postgresql": "postgres",
"mysql": "mysql",
"iceberg": "iceberg",
"redshift": "redshift",
"bigquery": "bigquery",
}

TWO_TIER_CONNECTORS = ["clickhouse", "hive", "mysql", "iceberg"]

# Type JSON was introduced in trino sqlalchemy dialect in version 0.317.0
if version.parse(trino.__version__) >= version.parse("0.317.0"):
register_custom_type(datatype.JSON, RecordTypeClass)
Expand Down Expand Up @@ -131,19 +162,47 @@ def _get_columns(self, connection, table_name, schema: str = None, **kw): # typ
TrinoDialect._get_columns = _get_columns


@functools.lru_cache()
def get_catalog_connector_name(
catalog_name: str, inspector: Inspector
) -> Optional[str]:
if inspector.engine:
query = dedent(
"""
SELECT *
FROM "system"."metadata"."catalogs"
"""
).strip()
res = inspector.engine.execute(sql.text(query))
catalog_connector_dict = {row.catalog_name: row.connector_name for row in res}
return catalog_connector_dict.get(catalog_name)
return None


class ConnectorDetail(PlatformInstanceConfigMixin, EnvConfigMixin):
connector_database: Optional[str] = Field(default=None, description="")


class TrinoConfig(BasicSQLAlchemyConfig):
# defaults
scheme: str = Field(default="trino", description="", hidden_from_docs=True)

catalog_to_connector_details: Dict[str, ConnectorDetail] = Field(
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let's make sure we're using the terms catalog and connector in a way that's consistent with https://trino.io/docs/current/overview/concepts.html#data-sources

The docs for this are also pretty unclear - terms like "three tier connector" are not commonplace

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@shubhamjagtap639 shubhamjagtap639 Feb 15, 2024

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Let me know if its still unclear

default={},
description="A mapping of trino catalog to its connector details like connector database, env and platform instance."
"This configuration is used to ingest lineage of datasets to connectors. Use catalog name as key.",
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)

ingest_lineage_to_connectors: bool = Field(
default=True,
description="Whether lineage of datasets to connectors should be ingested",
)

def get_identifier(self: BasicSQLAlchemyConfig, schema: str, table: str) -> str:
identifier = f"{schema}.{table}"
if self.database: # TODO: this should be required field
identifier = f"{self.database}.{identifier}"
return (
f"{self.platform_instance}.{identifier}"
if self.platform_instance
else identifier
)
return identifier


@platform_name("Trino", doc_order=1)
Expand Down Expand Up @@ -175,6 +234,127 @@ def get_db_name(self, inspector: Inspector) -> str:
else:
return super().get_db_name(inspector)

def _get_source_dataset_urn(
self,
dataset_name: str,
inspector: Inspector,
schema: str,
table: str,
) -> Optional[str]:
catalog_name = dataset_name.split(".")[0]
connector_name = get_catalog_connector_name(catalog_name, inspector)
if connector_name:
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connector_platform_name = KNOWN_CONNECTOR_PLATFORM_MAPPING.get(
connector_name
)
if connector_platform_name:
connector_details = self.config.catalog_to_connector_details.get(
catalog_name, ConnectorDetail()
)
if (
connector_platform_name in TWO_TIER_CONNECTORS
): # connector is two tier
return make_dataset_urn_with_platform_instance(
platform=connector_platform_name,
name=f"{schema}.{table}",
platform_instance=connector_details.platform_instance,
env=connector_details.env,
)
elif (
connector_details.connector_database
): # else connector is three tier
return make_dataset_urn_with_platform_instance(
platform=connector_platform_name,
name=f"{connector_details.connector_database}.{schema}.{table}",
platform_instance=connector_details.platform_instance,
env=connector_details.env,
)
return None

def gen_siblings_workunit(
self,
dataset_urn: str,
source_dataset_urn: str,
) -> Iterable[MetadataWorkUnit]:
"""
Generate sibling workunit for both trino dataset and its connector source dataset
"""
yield MetadataChangeProposalWrapper(
entityUrn=dataset_urn,
aspect=Siblings(primary=False, siblings=[source_dataset_urn]),
).as_workunit()

yield MetadataChangeProposalWrapper(
entityUrn=source_dataset_urn,
aspect=Siblings(primary=True, siblings=[dataset_urn]),
).as_workunit()

def gen_lineage_workunit(
self,
dataset_urn: str,
source_dataset_urn: str,
) -> Iterable[MetadataWorkUnit]:
"""
Generate dataset to source connector lineage workunit
"""
yield MetadataChangeProposalWrapper(
entityUrn=dataset_urn,
aspect=UpstreamLineage(
upstreams=[
Upstream(dataset=source_dataset_urn, type=DatasetLineageType.VIEW)
]
),
).as_workunit()

def _process_table(
self,
dataset_name: str,
inspector: Inspector,
schema: str,
table: str,
sql_config: SQLCommonConfig,
) -> Iterable[Union[SqlWorkUnit, MetadataWorkUnit]]:
yield from super()._process_table(
dataset_name, inspector, schema, table, sql_config
)
if self.config.ingest_lineage_to_connectors:
dataset_urn = make_dataset_urn_with_platform_instance(
self.platform,
dataset_name,
self.config.platform_instance,
self.config.env,
)
source_dataset_urn = self._get_source_dataset_urn(
dataset_name, inspector, schema, table
)
if source_dataset_urn:
yield from self.gen_siblings_workunit(dataset_urn, source_dataset_urn)
yield from self.gen_lineage_workunit(dataset_urn, source_dataset_urn)

def _process_view(
self,
dataset_name: str,
inspector: Inspector,
schema: str,
view: str,
sql_config: SQLCommonConfig,
) -> Iterable[Union[SqlWorkUnit, MetadataWorkUnit]]:
yield from super()._process_view(
dataset_name, inspector, schema, view, sql_config
)
if self.config.ingest_lineage_to_connectors:
dataset_urn = make_dataset_urn_with_platform_instance(
self.platform,
dataset_name,
self.config.platform_instance,
self.config.env,
)
source_dataset_urn = self._get_source_dataset_urn(
dataset_name, inspector, schema, view
)
if source_dataset_urn:
yield from self.gen_siblings_workunit(dataset_urn, source_dataset_urn)

@classmethod
def create(cls, config_dict, ctx):
config = TrinoConfig.parse_obj(config_dict)
Expand Down
60 changes: 18 additions & 42 deletions metadata-ingestion/tests/integration/trino/test_trino.py
Original file line number Diff line number Diff line change
@@ -1,4 +1,3 @@
import re
import subprocess

import pytest
Expand All @@ -9,7 +8,7 @@
from datahub.ingestion.run.pipeline import Pipeline
from datahub.ingestion.sink.file import FileSinkConfig
from datahub.ingestion.source.ge_profiling_config import GEProfilingConfig
from datahub.ingestion.source.sql.trino import TrinoConfig
from datahub.ingestion.source.sql.trino import ConnectorDetail, TrinoConfig
from tests.test_helpers import fs_helpers, mce_helpers
from tests.test_helpers.docker_helpers import wait_for_port

Expand Down Expand Up @@ -53,7 +52,6 @@ def loaded_trino(trino_runner):


@freeze_time(FROZEN_TIME)
@pytest.mark.xfail
def test_trino_ingest(
loaded_trino, test_resources_dir, pytestconfig, tmp_path, mock_time
):
Expand All @@ -73,7 +71,7 @@ def test_trino_ingest(
username="foo",
schema_pattern=AllowDenyPattern(allow=["^librarydb"]),
profile_pattern=AllowDenyPattern(
allow=["library_catalog.librarydb.*"]
allow=["postgresqldb.librarydb.*"]
),
profiling=GEProfilingConfig(
enabled=True,
Expand All @@ -89,6 +87,12 @@ def test_trino_ingest(
include_field_histogram=True,
include_field_sample_values=True,
),
catalog_to_connector_details={
"postgresqldb": ConnectorDetail(
connector_database="postgres",
platform_instance="local_server",
)
},
).dict(),
},
"sink": {
Expand Down Expand Up @@ -169,8 +173,6 @@ def test_trino_hive_ingest(
def test_trino_instance_ingest(
loaded_trino, test_resources_dir, pytestconfig, tmp_path, mock_time
):
instance = "production_warehouse"
platform = "trino"
mce_out_file = "trino_instance_mces.json"
events_file = tmp_path / mce_out_file
pipeline_config = {
Expand All @@ -183,6 +185,11 @@ def test_trino_instance_ingest(
username="foo",
platform_instance="production_warehouse",
schema_pattern=AllowDenyPattern(allow=["^db1"]),
catalog_to_connector_details={
"hivedb": ConnectorDetail(
platform_instance="local_server",
)
},
).dict(),
},
"sink": {
Expand All @@ -197,40 +204,9 @@ def test_trino_instance_ingest(
pipeline.pretty_print_summary()
pipeline.raise_from_status(raise_warnings=True)

# Assert that all events generated have instance specific urns
urn_pattern = "^" + re.escape(
f"urn:li:dataset:(urn:li:dataPlatform:{platform},{instance}."
)
assert (
mce_helpers.assert_mce_entity_urn(
"ALL",
entity_type="dataset",
regex_pattern=urn_pattern,
file=events_file,
)
>= 0
), "There should be at least one match"

assert (
mce_helpers.assert_mcp_entity_urn(
"ALL",
entity_type="dataset",
regex_pattern=urn_pattern,
file=events_file,
)
>= 0
), "There should be at least one MCP"

# all dataset entities emitted must have a dataPlatformInstance aspect emitted
# there must be at least one entity emitted
assert (
mce_helpers.assert_for_each_entity(
entity_type="dataset",
aspect_name="dataPlatformInstance",
aspect_field_matcher={
"instance": f"urn:li:dataPlatformInstance:(urn:li:dataPlatform:{platform},{instance})"
},
file=events_file,
)
>= 1
# Verify the output.
mce_helpers.check_golden_file(
pytestconfig,
output_path=events_file,
golden_path=test_resources_dir / "trino_hive_instance_mces_golden.json",
)
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