fix: update grpc based ReadObject rpcs to remove race condition between cancellation and message handling #2708
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BenWhitehead
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| private final class LazyServerStreamIterator implements Iterator<ReadObjectResponse>, Closeable { | ||
| private ServerStream<ReadObjectResponse> serverStream; | ||
| private Iterator<ReadObjectResponse> responseIterator; | ||
| private final class ReadObjectObserver extends StateCheckingResponseObserver<ReadObjectResponse> { |
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Unfortunately, git thinks this class is a modification of the previous LazyServerStreamIterator except it's a whole new class.
Rather than comparing this class to what was there before, evaluate this class as brand new.
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This is loosely modeled on the https://github.com/googleapis/sdk-platform-java/blob/2447513ce8a93632d2ff1878e717f4c914717bb3/gax-java/gax/src/main/java/com/google/api/gax/rpc/QueuingResponseObserver.java that was used previously
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…en cancellation and message handling Update GapicUnbufferedReadableByteChannel to manage the grpc stream itself rather than using the stream iterator provided by gax. This allows us to ensure the cancellation is observed and our draining performs before returning from close(). As a side effect of not using the gax stream iterator, we now must handle stream restarts ourselves. GrpcStorageOptions.ReadObjectResumptionStrategy has been removed entirely, while RetryingDependencies and ResultRetryAlgorithm are now plumbed all the way down to the GapicUnbufferedReadableByteChannel.
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…en cancellation and message handling (#2708) Update GapicUnbufferedReadableByteChannel to manage the grpc stream itself rather than using the stream iterator provided by gax. This allows us to ensure the cancellation is observed and our draining performs before returning from close(). As a side effect of not using the gax stream iterator, we now must handle stream restarts ourselves. GrpcStorageOptions.ReadObjectResumptionStrategy has been removed entirely, while RetryingDependencies and ResultRetryAlgorithm are now plumbed all the way down to the GapicUnbufferedReadableByteChannel.
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Update GapicUnbufferedReadableByteChannel to manage the grpc stream itself rather than using the stream iterator provided by gax. This allows us to ensure the cancellation is observed and our draining performs before returning from close().
As a side effect of not using the gax stream iterator, we now must handle stream restarts ourselves. GrpcStorageOptions.ReadObjectResumptionStrategy has been removed entirely, while RetryingDependencies and ResultRetryAlgorithm are now plumbed all the way down to the GapicUnbufferedReadableByteChannel.