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[Feature] Add DataPlane support (#700)
## Changes Add DataPlane support ## Tests - [X] `make test` run locally - [X] `make fmt` applied - [ ] relevant integration tests applied - [X] Manual test against staging workspace (prod workspaces don't support DataPlane APIs)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,65 @@ | ||
| import threading | ||
| from dataclasses import dataclass | ||
| from typing import Callable, List | ||
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| from databricks.sdk.oauth import Token | ||
| from databricks.sdk.service.oauth2 import DataPlaneInfo | ||
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| @dataclass | ||
| class DataPlaneDetails: | ||
| """ | ||
| Contains details required to query a DataPlane endpoint. | ||
| """ | ||
| endpoint_url: str | ||
| """URL used to query the endpoint through the DataPlane.""" | ||
| token: Token | ||
| """Token to query the DataPlane endpoint.""" | ||
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| class DataPlaneService: | ||
| """Helper class to fetch and manage DataPlane details.""" | ||
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| def __init__(self): | ||
| self._data_plane_info = {} | ||
| self._tokens = {} | ||
| self._lock = threading.Lock() | ||
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| def get_data_plane_details(self, method: str, params: List[str], info_getter: Callable[[], DataPlaneInfo], | ||
| refresh: Callable[[str], Token]): | ||
| """Get and cache information required to query a Data Plane endpoint using the provided methods. | ||
| Returns a cached DataPlaneDetails if the details have already been fetched previously and are still valid. | ||
| If not, it uses the provided functions to fetch the details. | ||
| :param method: method name. Used to construct a unique key for the cache. | ||
| :param params: path params used in the "get" operation which uniquely determine the object. Used to construct a unique key for the cache. | ||
| :param info_getter: function which returns the DataPlaneInfo. It will only be called if the information is not already present in the cache. | ||
| :param refresh: function to refresh the token. It will only be called if the token is missing or expired. | ||
| """ | ||
| all_elements = params.copy() | ||
| all_elements.insert(0, method) | ||
| map_key = "/".join(all_elements) | ||
| info = self._data_plane_info.get(map_key) | ||
| if not info: | ||
| self._lock.acquire() | ||
| try: | ||
| info = self._data_plane_info.get(map_key) | ||
| if not info: | ||
| info = info_getter() | ||
| self._data_plane_info[map_key] = info | ||
| finally: | ||
| self._lock.release() | ||
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| token = self._tokens.get(map_key) | ||
| if not token or not token.valid: | ||
| self._lock.acquire() | ||
| token = self._tokens.get(map_key) | ||
| try: | ||
| if not token or not token.valid: | ||
| token = refresh(info.authorization_details) | ||
| self._tokens[map_key] = token | ||
| finally: | ||
| self._lock.release() | ||
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| return DataPlaneDetails(endpoint_url=info.endpoint_url, token=token) |
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