sentinel.TraceError和sentinel.Exit没有被调用

[r27153733]

Environment

• Server: Dubbo-go, v3.1.1
• Client: Dubbo-go, v3.1.1
• Protocol: Triple

Issue description

context.WithValue 只能往子ctx存value，这导致OnResponse无法通过ctx.Value获取entry，导致entry没退出，sentinel.TraceError也不会被调用。

[DMwangnima]

Can you provide more detailed descriptions like the concrete code location or code screenshot?

[r27153733]

您能否提供更详细的描述，例如具体代码位置或代码截图？

可以看到这两个方法的ctx是平行关系。

dubbo-go/protocol/protocolwrapper/protocol_filter_wrapper.go

Lines 126 to 129 in 2f5143a

	func (fi *FilterInvoker) Invoke(ctx context.Context, invocation protocol.Invocation) protocol.Result {
	result := fi.filter.Invoke(ctx, fi.next, invocation)
	return fi.filter.OnResponse(ctx, result, fi.invoker, invocation)
	}

143行生成了新的子ctx。

dubbo-go/filter/sentinel/filter.go

Lines 120 to 145 in 2f5143a

	func (d *sentinelProviderFilter) Invoke(ctx context.Context, invoker protocol.Invoker, invocation protocol.Invocation) protocol.Result {
	interfaceResourceName, methodResourceName := getResourceName(invoker, invocation, getProviderPrefix())
	var (
	interfaceEntry *base.SentinelEntry
	methodEntry *base.SentinelEntry
	b *base.BlockError
	)
	interfaceEntry, b = sentinel.Entry(interfaceResourceName, sentinel.WithResourceType(base.ResTypeRPC), sentinel.WithTrafficType(base.Inbound))
	if b != nil {
	// interface blocked
	return sentinelDubboProviderFallback(ctx, invoker, invocation, b)
	}
	ctx = context.WithValue(ctx, InterfaceEntryKey, interfaceEntry)
	methodEntry, b = sentinel.Entry(methodResourceName,
	sentinel.WithResourceType(base.ResTypeRPC),
	sentinel.WithTrafficType(base.Inbound),
	sentinel.WithArgs(invocation.Arguments()...))
	if b != nil {
	// method blocked
	return sentinelDubboProviderFallback(ctx, invoker, invocation, b)
	}
	ctx = context.WithValue(ctx, MethodEntryKey, methodEntry)
	return invoker.Invoke(ctx, invocation)
	}

dubbo-go/filter/sentinel/filter.go

Lines 147 to 150 in 2f5143a

	func (d *sentinelProviderFilter) OnResponse(ctx context.Context, result protocol.Result, _ protocol.Invoker, _ protocol.Invocation) protocol.Result {
	sentinelExit(ctx, result)
	return result
	}

dubbo-go/filter/sentinel/filter.go

Lines 91 to 102 in 2f5143a

	func sentinelExit(ctx context.Context, result protocol.Result) {
	if methodEntry := ctx.Value(MethodEntryKey); methodEntry != nil {
	e := methodEntry.(*base.SentinelEntry)
	sentinel.TraceError(e, result.Error())
	e.Exit()
	}
	if interfaceEntry := ctx.Value(InterfaceEntryKey); interfaceEntry != nil {
	e := interfaceEntry.(*base.SentinelEntry)
	sentinel.TraceError(e, result.Error())
	e.Exit()
	}
	}