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26 lines
608 B
Go
26 lines
608 B
Go
package clientinterceptors
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import (
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"context"
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"zero/core/trace"
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"google.golang.org/grpc"
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"google.golang.org/grpc/metadata"
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)
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func TracingInterceptor(ctx context.Context, method string, req, reply interface{},
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cc *grpc.ClientConn, invoker grpc.UnaryInvoker, opts ...grpc.CallOption) error {
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ctx, span := trace.StartClientSpan(ctx, cc.Target(), method)
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defer span.Finish()
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var pairs []string
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span.Visit(func(key, val string) bool {
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pairs = append(pairs, key, val)
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return true
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})
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ctx = metadata.AppendToOutgoingContext(ctx, pairs...)
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return invoker(ctx, method, req, reply, cc, opts...)
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}
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