Add athena plugin (#504)

Signed-off-by: Haytham Abuelfutuh <[email protected]>

flytekit/models/presto.py

@@ -6,7 +6,7 @@
 
 
 class PrestoQuery(_common.FlyteIdlEntity):
-    def __init__(self, routing_group, catalog, schema, statement):
+    def __init__(self, routing_group=None, catalog=None, schema=None, statement=None):
         """
         Initializes a new PrestoQuery.
 

plugins/flytekit-athena/flytekitplugins/athena/__init__.py

@@ -0,0 +1 @@
+from .task import AthenaConfig, AthenaTask

plugins/flytekit-athena/flytekitplugins/athena/task.py

@@ -0,0 +1,78 @@
+from dataclasses import dataclass
+from typing import Any, Dict, Optional, Type
+
+from google.protobuf.json_format import MessageToDict
+
+from flytekit.extend import SerializationSettings, SQLTask
+from flytekit.models.presto import PrestoQuery
+from flytekit.types.schema import FlyteSchema
+
+
+@dataclass
+class AthenaConfig(object):
+    """
+    AthenaConfig should be used to configure a Athena Task.
+    """
+
+    # 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
+
+
+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.
+    """
+
+    # This task is executed using the presto handler in the backend.
+    _TASK_TYPE = "presto"
+
+    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
+
+    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())

plugins/flytekit-athena/setup.py

@@ -0,0 +1,34 @@
+from setuptools import setup
+
+PLUGIN_NAME = "athena"
+
+microlib_name = f"flytekitplugins-{PLUGIN_NAME}"
+
+plugin_requires = ["flytekit>=0.19.0,<1.0.0"]
+
+__version__ = "0.0.0+develop"
+
+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",
+    ],
+)

plugins/setup.py

@@ -17,6 +17,7 @@
     "flytekitplugins-pandera": "pandera",
     "flytekitplugins-dolt": "flytekit-dolt",
     "flytekitplugins-sqlalchemy": "flytekitplugins-sqlalchemy",
+    "flytekitplugins-athena": "flytekit-athena",
 }
 
 

plugins/tests/athena/test_athena.py

@@ -0,0 +1,73 @@
+from collections import OrderedDict
+
+import pytest
+from flytekitplugins.athena import AthenaConfig, AthenaTask
+
+from flytekit import kwtypes, workflow
+from flytekit.extend import Image, ImageConfig, SerializationSettings, get_serializable
+from flytekit.types.schema import FlyteSchema
+
+
+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,
+    )
+
+    @workflow
+    def my_wf(ds: str) -> FlyteSchema:
+        return athena_task(ds=ds)
+
+    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
+
+    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"
+
+
+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,
+    )
+
+    assert len(athena_task.interface.inputs) == 1
+    assert len(athena_task.interface.outputs) == 1
+
+    # will not run locally
+    with pytest.raises(Exception):
+        athena_task()