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Signed-off-by: wild-endeavor <[email protected]>
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Katrina Rogan
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Jun 7, 2021
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from .task import AthenaConfig, AthenaTask |
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from dataclasses import dataclass | ||
from typing import Any, Dict, Optional, Type | ||
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from google.protobuf.json_format import MessageToDict | ||
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from flytekit.extend import SerializationSettings, SQLTask | ||
from flytekit.models.presto import PrestoQuery | ||
from flytekit.types.schema import FlyteSchema | ||
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@dataclass | ||
class AthenaConfig(object): | ||
""" | ||
AthenaConfig should be used to configure a Athena Task. | ||
""" | ||
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# The database to query against | ||
database: Optional[str] = None | ||
# The optional workgroup to separate query execution. | ||
workgroup: Optional[str] = None | ||
# The catalog to set for the given Presto query | ||
catalog: Optional[str] = None | ||
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class AthenaTask(SQLTask[AthenaConfig]): | ||
""" | ||
This is the simplest form of a Athena Task, that can be used even for tasks that do not produce any output. | ||
""" | ||
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# This task is executed using the presto handler in the backend. | ||
_TASK_TYPE = "presto" | ||
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def __init__( | ||
self, | ||
name: str, | ||
query_template: str, | ||
task_config: Optional[AthenaConfig] = None, | ||
inputs: Optional[Dict[str, Type]] = None, | ||
output_schema_type: Optional[Type[FlyteSchema]] = None, | ||
**kwargs, | ||
): | ||
""" | ||
Args: | ||
name: Name of this task, should be unique in the project | ||
config: Type AthenaConfig object | ||
inputs: Name and type of inputs specified as an ordered dictionary | ||
query_template: The actual query to run. We use Flyte's Golang templating format for Query templating. | ||
Refer to the templating documentation | ||
output_schema_type: If some data is produced by this query, then you can specify the output schema type | ||
**kwargs: All other args required by Parent type - SQLTask | ||
""" | ||
outputs = None | ||
if output_schema_type is not None: | ||
outputs = { | ||
"results": output_schema_type, | ||
} | ||
if task_config is None: | ||
task_config = AthenaConfig() | ||
super().__init__( | ||
name=name, | ||
task_config=task_config, | ||
query_template=query_template, | ||
inputs=inputs, | ||
outputs=outputs, | ||
task_type=self._TASK_TYPE, | ||
**kwargs, | ||
) | ||
self._output_schema_type = output_schema_type | ||
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def get_custom(self, settings: SerializationSettings) -> Dict[str, Any]: | ||
# This task is executed using the presto handler in the backend. | ||
job = PrestoQuery( | ||
statement=self.query_template, | ||
schema=self.task_config.database, | ||
routing_group=self.task_config.workgroup, | ||
catalog=self.task_config.catalog, | ||
) | ||
return MessageToDict(job.to_flyte_idl()) |
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from setuptools import setup | ||
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PLUGIN_NAME = "athena" | ||
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microlib_name = f"flytekitplugins-{PLUGIN_NAME}" | ||
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plugin_requires = ["flytekit>=0.19.0,<1.0.0"] | ||
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__version__ = "0.0.0+develop" | ||
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setup( | ||
name=microlib_name, | ||
version=__version__, | ||
author="flyteorg", | ||
author_email="[email protected]", | ||
description="This package holds the Athena plugins for flytekit", | ||
namespace_packages=["flytekitplugins"], | ||
packages=[f"flytekitplugins.{PLUGIN_NAME}"], | ||
install_requires=plugin_requires, | ||
license="apache2", | ||
python_requires=">=3.7", | ||
classifiers=[ | ||
"Intended Audience :: Science/Research", | ||
"Intended Audience :: Developers", | ||
"License :: OSI Approved :: Apache Software License", | ||
"Programming Language :: Python :: 3.7", | ||
"Programming Language :: Python :: 3.8", | ||
"Topic :: Scientific/Engineering", | ||
"Topic :: Scientific/Engineering :: Artificial Intelligence", | ||
"Topic :: Software Development", | ||
"Topic :: Software Development :: Libraries", | ||
"Topic :: Software Development :: Libraries :: Python Modules", | ||
], | ||
) |
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from collections import OrderedDict | ||
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import pytest | ||
from flytekitplugins.athena import AthenaConfig, AthenaTask | ||
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from flytekit import kwtypes, workflow | ||
from flytekit.extend import Image, ImageConfig, SerializationSettings, get_serializable | ||
from flytekit.types.schema import FlyteSchema | ||
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def test_serialization(): | ||
athena_task = AthenaTask( | ||
name="flytekit.demo.athena_task.query", | ||
inputs=kwtypes(ds=str), | ||
task_config=AthenaConfig(database="mnist", catalog="my_catalog", workgroup="my_wg"), | ||
query_template=""" | ||
insert overwrite directory '{{ .rawOutputDataPrefix }}' stored as parquet | ||
select * | ||
from blah | ||
where ds = '{{ .Inputs.ds }}' | ||
""", | ||
# the schema literal's backend uri will be equal to the value of .raw_output_data | ||
output_schema_type=FlyteSchema, | ||
) | ||
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@workflow | ||
def my_wf(ds: str) -> FlyteSchema: | ||
return athena_task(ds=ds) | ||
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default_img = Image(name="default", fqn="test", tag="tag") | ||
serialization_settings = SerializationSettings( | ||
project="proj", | ||
domain="dom", | ||
version="123", | ||
image_config=ImageConfig(default_image=default_img, images=[default_img]), | ||
env={}, | ||
) | ||
task_spec = get_serializable(OrderedDict(), serialization_settings, athena_task) | ||
assert "{{ .rawOutputDataPrefix" in task_spec.template.custom["statement"] | ||
assert "insert overwrite directory" in task_spec.template.custom["statement"] | ||
assert "mnist" == task_spec.template.custom["schema"] | ||
assert "my_catalog" == task_spec.template.custom["catalog"] | ||
assert "my_wg" == task_spec.template.custom["routingGroup"] | ||
assert len(task_spec.template.interface.inputs) == 1 | ||
assert len(task_spec.template.interface.outputs) == 1 | ||
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admin_workflow_spec = get_serializable(OrderedDict(), serialization_settings, my_wf) | ||
assert admin_workflow_spec.template.interface.outputs["o0"].type.schema is not None | ||
assert admin_workflow_spec.template.outputs[0].var == "o0" | ||
assert admin_workflow_spec.template.outputs[0].binding.promise.node_id == "n0" | ||
assert admin_workflow_spec.template.outputs[0].binding.promise.var == "results" | ||
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def test_local_exec(): | ||
athena_task = AthenaTask( | ||
name="flytekit.demo.athena_task.query2", | ||
inputs=kwtypes(ds=str), | ||
query_template=""" | ||
insert overwrite directory '{{ .rawOutputDataPrefix }}' stored as parquet | ||
select * | ||
from blah | ||
where ds = '{{ .Inputs.ds }}' | ||
""", | ||
# the schema literal's backend uri will be equal to the value of .raw_output_data | ||
output_schema_type=FlyteSchema, | ||
) | ||
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assert len(athena_task.interface.inputs) == 1 | ||
assert len(athena_task.interface.outputs) == 1 | ||
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# will not run locally | ||
with pytest.raises(Exception): | ||
athena_task() |