-
Notifications
You must be signed in to change notification settings - Fork 438
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
feat: add exponential backoff to ResumableStream (#7664)
- Loading branch information
Showing
4 changed files
with
176 additions
and
9 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,134 @@ | ||
| <?php | ||
| /** | ||
| * Copyright 2024, Google LLC All rights reserved. | ||
| * | ||
| * 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. | ||
| */ | ||
|
|
||
| namespace Google\Cloud\Bigtable\Tests\Unit; | ||
|
|
||
| use Google\Cloud\Bigtable\ResumableStream; | ||
| use Google\Cloud\Bigtable\V2\Client\BigtableClient; | ||
| use Google\Cloud\Bigtable\V2\ReadRowsRequest; | ||
| use Google\Cloud\Bigtable\V2\ReadRowsResponse; | ||
| use PHPUnit\Framework\TestCase; | ||
| use Prophecy\PhpUnit\ProphecyTrait; | ||
| use Prophecy\Argument; | ||
| use Google\ApiCore\ServerStream; | ||
|
|
||
| /** | ||
| * @group bigtable | ||
| * @group bigtabledata | ||
| */ | ||
| class ResumableStreamTest extends TestCase | ||
| { | ||
| use ProphecyTrait; | ||
|
|
||
| const RETRYABLE_CODE = 1234; | ||
|
|
||
| public function testRetryDelayAndAttemptAreResetWhenRowReceived() | ||
| { | ||
| if (extension_loaded('protobuf')) { | ||
| $this->markTestSkipped('This test is not compatible with the protobuf extension'); | ||
| } | ||
|
|
||
| $count = 0; | ||
| $stream = $this->prophesize(ServerStream::class); | ||
| $generator1 = function () { | ||
| yield new ReadRowsResponse(); | ||
| throw new \Exception('This is the 3rd retryable', self::RETRYABLE_CODE); | ||
| }; | ||
| $generator2 = fn () => yield new ReadRowsResponse(); | ||
| $stream->readAll() | ||
| ->will(function () use (&$count, $generator1, $generator2) { | ||
| // Simlate a call to readRows where the server throws 2 exceptions, reads a row | ||
| // successfuly, throws another exception, and reads one more row successfully. | ||
| return match ($count++) { | ||
| 0 => throw new \Exception('This is the 1st retryable', self::RETRYABLE_CODE), | ||
| 1 => throw new \Exception('This is the 2nd retryable', self::RETRYABLE_CODE), | ||
| 2 => $generator1(), | ||
| 3 => throw new \Exception( | ||
| 'The 4th exception should retry because attempts reset', | ||
| self::RETRYABLE_CODE | ||
| ), | ||
| 4 => $generator2(), | ||
| }; | ||
| }); | ||
| $bigtable = $this->prophesize(BigtableClient::class); | ||
| $bigtable->readRows(Argument::type(ReadRowsRequest::class), Argument::type('array')) | ||
| ->shouldBeCalledTimes(5) | ||
| ->willReturn($stream->reveal()); | ||
| $resumableStream = new ResumableStream( | ||
| $bigtable->reveal(), | ||
| 'readRows', | ||
| $this->prophesize(ReadRowsRequest::class)->reveal(), | ||
| fn ($request, $callOptions) => [$request, $callOptions], | ||
| fn ($exception) => $exception && $exception->getCode() === self::RETRYABLE_CODE | ||
| ); | ||
|
|
||
| $retries = 0; | ||
| $delayFunction = function ($delayFactor) use (&$retries) { | ||
| $this->assertEquals(match (++$retries) { | ||
| 1 => 1, // initial delay | ||
| 2 => 2, // increment by 1 | ||
| 3 => 1, // the delay is reset by the successful call | ||
| 4 => 2, // increment by 1 | ||
| }, $delayFactor); | ||
| }; | ||
| $prop = (new \ReflectionObject($resumableStream))->getProperty('delayFunction'); | ||
| $prop->setAccessible(true); | ||
| $prop->setValue($resumableStream, $delayFunction); | ||
|
|
||
| $rows = iterator_to_array($resumableStream->readAll()); | ||
| $this->assertEquals(2, count($rows)); | ||
| $this->assertEquals(4, $retries); | ||
| } | ||
|
|
||
| public function testThreeConsecutiveFailuresIsNotReset() | ||
| { | ||
| if (extension_loaded('protobuf')) { | ||
| $this->markTestSkipped('This test is not compatible with the protobuf extension'); | ||
| } | ||
|
|
||
| $this->expectException(\Exception::class); | ||
| $this->expectExceptionMessage('This is retryable, but we are at our limit!'); | ||
|
|
||
| $count = 0; | ||
| $stream = $this->prophesize(ServerStream::class); | ||
| $stream->readAll() | ||
| ->will(function () use (&$count) { | ||
| // Simlate a call to readRows where the server throws 2 exceptions, reads a row | ||
| // successfuly, throws another exception, and reads one more row successfully. | ||
| return match ($count++) { | ||
| 0 => throw new \Exception('This is retryable!', self::RETRYABLE_CODE), | ||
| 1 => throw new \Exception('This is also retryable!', self::RETRYABLE_CODE), | ||
| 2 => throw new \Exception('This is too is retryable!', self::RETRYABLE_CODE), | ||
| 3 => throw new \Exception('This is retryable, but we are at our limit!', self::RETRYABLE_CODE), | ||
| 4 => throw new \Exception('This is not retryable and should not be thrown'), | ||
| }; | ||
| }); | ||
| $bigtable = $this->prophesize(BigtableClient::class); | ||
| $bigtable->readRows(Argument::type(ReadRowsRequest::class), Argument::type('array')) | ||
| ->shouldBeCalledTimes(4) | ||
| ->willReturn($stream->reveal()); | ||
| $resumableStream = new ResumableStream( | ||
| $bigtable->reveal(), | ||
| 'readRows', | ||
| $this->prophesize(ReadRowsRequest::class)->reveal(), | ||
| fn ($request, $callOptions) => [$request, $callOptions], | ||
| fn ($exception) => $exception && $exception->getCode() === self::RETRYABLE_CODE | ||
| ); | ||
|
|
||
| iterator_to_array($resumableStream->readAll()); | ||
| } | ||
| } |