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api,netty: fix MethodDescriptor and InternalKnownTransport for netty-shaded #6774

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merged 2 commits into from Feb 27, 2020

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dapengzhang0
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Continue to use enum InternalKnownTransport and extend it for ABI backward compatibility (hopefully).

new InternalMethodDescriptor(InternalKnownTransport.NETTY);
new InternalMethodDescriptor(
NettyClientTransport.class.getName().contains("grpc.netty.shaded")
? InternalKnownTransport.NETTY_SHADED : InternalKnownTransport.NETTY);
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I'm not sure if it's possible that the compiler can optimize this contains()?: expression and replace it with InternalKnownTransport.NETTY directly before shadow plugin does its job. My local interop test did not show it happened.

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No, it won't be able to rework this string. You could also just do "shaded" as another option. But all those variations should be fine.

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Just "shaded" will produce false positive if grpc as a whole is shaded by the application.

@dapengzhang0
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Resolves #6765

@@ -51,7 +51,8 @@

// Must be set to InternalKnownTransport.values().length
// Not referenced to break the dependency.
private final AtomicReferenceArray<Object> rawMethodNames = new AtomicReferenceArray<>(1);
private final AtomicReferenceArray<Object> rawMethodNames =
new AtomicReferenceArray<>(InternalKnownTransport.values().length);
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This will break Bazel; use a literal 2.

The comment alludes to why this was done, but even if you thought that no longer applied the comment should have been removed.

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InternalKnownTransport is part of grpc-api so Bazel seems not impacted. It breaks blaze though.

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Just noticed there were already comments on this field

// Must be set to InternalKnownTransport.values().length
// Not referenced to break the dependency.
private final AtomicReferenceArray<Object> rawMethodNames =

new InternalMethodDescriptor(InternalKnownTransport.NETTY);
new InternalMethodDescriptor(
NettyClientTransport.class.getName().contains("grpc.netty.shaded")
? InternalKnownTransport.NETTY_SHADED : InternalKnownTransport.NETTY);
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No, it won't be able to rework this string. You could also just do "shaded" as another option. But all those variations should be fine.

@ejona86 ejona86 added the TODO:backport PR needs to be backported. Removed after backport complete label Feb 27, 2020
@dapengzhang0 dapengzhang0 merged commit 5677a0b into grpc:master Feb 27, 2020
@dapengzhang0 dapengzhang0 deleted the fix-method-descriptor-shaded branch February 27, 2020 20:54
@ejona86 ejona86 removed the TODO:backport PR needs to be backported. Removed after backport complete label Mar 9, 2020
@github-actions github-actions bot locked as resolved and limited conversation to collaborators Jun 17, 2021
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2 participants