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* feat: add progress bar for to_arrow method * feat: add progress bar for to_dataframe * feat: add default progress bar and unit test * feat: nit * feat: result timout for without queryplan
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| # Copyright 2019 Google LLC | ||
| # | ||
| # Licensed under the Apache License, Version 2.0 (the "License"); | ||
| # you may not use this file except in compliance with the License. | ||
| # You may obtain a copy of the License at | ||
| # | ||
| # http://www.apache.org/licenses/LICENSE-2.0 | ||
| # | ||
| # Unless required by applicable law or agreed to in writing, software | ||
| # distributed under the License is distributed on an "AS IS" BASIS, | ||
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| # See the License for the specific language governing permissions and | ||
| # limitations under the License. | ||
|
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| """Shared helper functions for tqdm progress bar.""" | ||
|
|
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| import concurrent.futures | ||
| import time | ||
| import warnings | ||
|
|
||
| try: | ||
| import tqdm | ||
| except ImportError: # pragma: NO COVER | ||
| tqdm = None | ||
|
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| _NO_TQDM_ERROR = ( | ||
| "A progress bar was requested, but there was an error loading the tqdm " | ||
| "library. Please install tqdm to use the progress bar functionality." | ||
| ) | ||
|
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| _PROGRESS_BAR_UPDATE_INTERVAL = 0.5 | ||
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| def get_progress_bar(progress_bar_type, description, total, unit): | ||
| """Construct a tqdm progress bar object, if tqdm is .""" | ||
| if tqdm is None: | ||
| if progress_bar_type is not None: | ||
| warnings.warn(_NO_TQDM_ERROR, UserWarning, stacklevel=3) | ||
| return None | ||
|
|
||
| try: | ||
| if progress_bar_type == "tqdm": | ||
| return tqdm.tqdm(desc=description, total=total, unit=unit) | ||
| elif progress_bar_type == "tqdm_notebook": | ||
| return tqdm.tqdm_notebook(desc=description, total=total, unit=unit) | ||
| elif progress_bar_type == "tqdm_gui": | ||
| return tqdm.tqdm_gui(desc=description, total=total, unit=unit) | ||
| except (KeyError, TypeError): | ||
| # Protect ourselves from any tqdm errors. In case of | ||
| # unexpected tqdm behavior, just fall back to showing | ||
| # no progress bar. | ||
| warnings.warn(_NO_TQDM_ERROR, UserWarning, stacklevel=3) | ||
| return None | ||
|
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| def wait_for_query(query_job, progress_bar_type=None): | ||
| """Return query result and display a progress bar while the query running, if tqdm is installed.""" | ||
| if progress_bar_type is None: | ||
| return query_job.result() | ||
|
|
||
| default_total = 1 | ||
| current_stage = None | ||
| start_time = time.time() | ||
| progress_bar = get_progress_bar( | ||
| progress_bar_type, "Query is running", default_total, "query" | ||
| ) | ||
| i = 0 | ||
| while True: | ||
| if query_job.query_plan: | ||
| default_total = len(query_job.query_plan) | ||
| current_stage = query_job.query_plan[i] | ||
| progress_bar.total = len(query_job.query_plan) | ||
| progress_bar.set_description( | ||
| "Query executing stage {} and status {} : {:0.2f}s".format( | ||
| current_stage.name, current_stage.status, time.time() - start_time, | ||
| ), | ||
| ) | ||
| try: | ||
| query_result = query_job.result(timeout=_PROGRESS_BAR_UPDATE_INTERVAL) | ||
| progress_bar.update(default_total) | ||
| progress_bar.set_description( | ||
| "Query complete after {:0.2f}s".format(time.time() - start_time), | ||
| ) | ||
| break | ||
| except concurrent.futures.TimeoutError: | ||
| query_job.reload() # Refreshes the state via a GET request. | ||
| if current_stage: | ||
| if current_stage.status == "COMPLETE": | ||
| if i < default_total - 1: | ||
| progress_bar.update(i + 1) | ||
| i += 1 | ||
| continue | ||
| progress_bar.close() | ||
| return query_result |
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