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caller_info.go
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caller_info.go
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// The MIT License
//
// Copyright (c) 2020 Temporal Technologies Inc. All rights reserved.
//
// Copyright (c) 2020 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package interceptor
import (
"context"
"google.golang.org/grpc"
"go.temporal.io/server/common/headers"
"go.temporal.io/server/common/namespace"
)
type (
CallerInfoInterceptor struct {
namespaceRegistry namespace.Registry
}
)
var _ grpc.UnaryServerInterceptor = (*CallerInfoInterceptor)(nil).Intercept
func NewCallerInfoInterceptor(
namespaceRegistry namespace.Registry,
) *CallerInfoInterceptor {
return &CallerInfoInterceptor{
namespaceRegistry: namespaceRegistry,
}
}
func (i *CallerInfoInterceptor) Intercept(
ctx context.Context,
req interface{},
info *grpc.UnaryServerInfo,
handler grpc.UnaryHandler,
) (interface{}, error) {
callerInfo := headers.GetCallerInfo(ctx)
updateInfo := false
if callerInfo.CallerName == "" {
callerInfo.CallerName = string(MustGetNamespaceName(i.namespaceRegistry, req))
updateInfo = callerInfo.CallerName != ""
}
if callerInfo.CallerType == "" {
callerInfo.CallerType = headers.CallerTypeAPI
updateInfo = true
}
if (callerInfo.CallerType == headers.CallerTypeAPI || callerInfo.CallerType == headers.CallerTypeOperator) &&
callerInfo.CallOrigin == "" {
_, method := SplitMethodName(info.FullMethod)
callerInfo.CallOrigin = method
updateInfo = true
}
if updateInfo {
ctx = headers.SetCallerInfo(ctx, callerInfo)
}
return handler(ctx, req)
}