36 lines
		
	
	
		
			750 B
		
	
	
	
		
			Go
		
	
	
	
	
	
			
		
		
	
	
			36 lines
		
	
	
		
			750 B
		
	
	
	
		
			Go
		
	
	
	
	
	
| package directory
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| 
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| import (
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| 	"github.com/rs/zerolog/log"
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| 	"google.golang.org/grpc"
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| )
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| 
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| type ServiceInstance struct {
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| 	ID       string  `json:"id"`
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| 	Type     string  `json:"type"`
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| 	Label    string  `json:"label"`
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| 	GrpcAddr string  `json:"grpc_addr"`
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| 	HttpAddr *string `json:"http_addr"`
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| 
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| 	retryCount int
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| }
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| 
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| var connectionCache = make(map[string]*grpc.ClientConn)
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| 
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| func (v *ServiceInstance) GetGrpcConn() (*grpc.ClientConn, error) {
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| 	if conn, ok := connectionCache[v.ID]; ok {
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| 		return conn, nil
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| 	}
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| 
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| 	conn, err := ConnectService(v)
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| 	if err != nil {
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| 		_ = RemoveServiceInstance(v.ID)
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| 		log.Error().Str("id", v.ID).Err(err).Msg("Failed to connect to service, dropped...")
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| 		return nil, err
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| 	} else {
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| 		connectionCache[v.ID] = conn
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| 	}
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| 
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| 	return conn, nil
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| }
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