go.temporal.io/server@v1.23.0/common/rpc/interceptor/caller_info.go (about)

     1  // The MIT License
     2  //
     3  // Copyright (c) 2020 Temporal Technologies Inc.  All rights reserved.
     4  //
     5  // Copyright (c) 2020 Uber Technologies, Inc.
     6  //
     7  // Permission is hereby granted, free of charge, to any person obtaining a copy
     8  // of this software and associated documentation files (the "Software"), to deal
     9  // in the Software without restriction, including without limitation the rights
    10  // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
    11  // copies of the Software, and to permit persons to whom the Software is
    12  // furnished to do so, subject to the following conditions:
    13  //
    14  // The above copyright notice and this permission notice shall be included in
    15  // all copies or substantial portions of the Software.
    16  //
    17  // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    18  // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    19  // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
    20  // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
    21  // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
    22  // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
    23  // THE SOFTWARE.
    24  
    25  package interceptor
    26  
    27  import (
    28  	"context"
    29  
    30  	"google.golang.org/grpc"
    31  
    32  	"go.temporal.io/server/common/headers"
    33  	"go.temporal.io/server/common/namespace"
    34  )
    35  
    36  type (
    37  	CallerInfoInterceptor struct {
    38  		namespaceRegistry namespace.Registry
    39  	}
    40  )
    41  
    42  var _ grpc.UnaryServerInterceptor = (*CallerInfoInterceptor)(nil).Intercept
    43  
    44  func NewCallerInfoInterceptor(
    45  	namespaceRegistry namespace.Registry,
    46  ) *CallerInfoInterceptor {
    47  	return &CallerInfoInterceptor{
    48  		namespaceRegistry: namespaceRegistry,
    49  	}
    50  }
    51  
    52  func (i *CallerInfoInterceptor) Intercept(
    53  	ctx context.Context,
    54  	req interface{},
    55  	info *grpc.UnaryServerInfo,
    56  	handler grpc.UnaryHandler,
    57  ) (interface{}, error) {
    58  	callerInfo := headers.GetCallerInfo(ctx)
    59  
    60  	updateInfo := false
    61  	if callerInfo.CallerName == "" {
    62  		callerInfo.CallerName = string(MustGetNamespaceName(i.namespaceRegistry, req))
    63  		updateInfo = callerInfo.CallerName != ""
    64  	}
    65  	if callerInfo.CallerType == "" {
    66  		callerInfo.CallerType = headers.CallerTypeAPI
    67  		updateInfo = true
    68  	}
    69  	if (callerInfo.CallerType == headers.CallerTypeAPI || callerInfo.CallerType == headers.CallerTypeOperator) &&
    70  		callerInfo.CallOrigin == "" {
    71  		_, method := SplitMethodName(info.FullMethod)
    72  		callerInfo.CallOrigin = method
    73  		updateInfo = true
    74  	}
    75  
    76  	if updateInfo {
    77  		ctx = headers.SetCallerInfo(ctx, callerInfo)
    78  	}
    79  
    80  	return handler(ctx, req)
    81  }