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Metadata cannot be obtained through grpc #4941

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Metadata cannot be obtained through grpc#4941
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CrazyHZM
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P2fundamentalsgood first issueGood for newcomerskind/bugSomething isn't workingpinned
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v1.12
@saber-wang

Description

@saber-wang
saber-wang
opened on Jul 28, 2022

In what area(s)?

/area runtime

What version of Dapr?

1.8.0

Expected Behavior

Get metadata through grpc

Actual Behavior

Get empty object
image

Steps to Reproduce the Problem

It can be considered that it has not been achieved···:

dapr/pkg/grpc/api.go

Lines 1472 to 1497 in 451f75d

func (a *api) GetMetadata(ctx context.Context, in *emptypb.Empty) (*runtimev1pb.GetMetadataResponse, error) {
temp := make(map[string]string)
// Copy synchronously so it can be serialized to JSON.
a.extendedMetadata.Range(func(key, value interface{}) bool {
temp[key.(string)] = value.(string)
return true
})
temp[daprRuntimeVersionKey] = a.daprRunTimeVersion
registeredComponents := make([]*runtimev1pb.RegisteredComponents, 0, len(a.components))
componentsCapabilties := a.getComponentsCapabilitesFn()
for _, comp := range a.components {
registeredComp := &runtimev1pb.RegisteredComponents{
Name: comp.Name,
Version: comp.Spec.Version,
Type: comp.Spec.Type,
Capabilities: getOrDefaultCapabilites(componentsCapabilties, comp.Name),
}
registeredComponents = append(registeredComponents, registeredComp)
}
response := &runtimev1pb.GetMetadataResponse{
ExtendedMetadata: temp,
RegisteredComponents: registeredComponents,
}
return response, nil
}

This map cannot be synchronized before grpc and http:

dapr/pkg/grpc/api.go

Line 132 in 451f75d

extendedMetadata sync.Map

dapr/pkg/http/api.go

Line 92 in 451f75d

extendedMetadata sync.Map

Metadata

Metadata

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