gRPC migration

Change-Id: I3129ae27d7ee12a23c7046f0d877e8064f2fd7f4
diff --git a/vendor/github.com/uber/jaeger-client-go/transport_udp.go b/vendor/github.com/uber/jaeger-client-go/transport_udp.go
index 7370d80..0000412 100644
--- a/vendor/github.com/uber/jaeger-client-go/transport_udp.go
+++ b/vendor/github.com/uber/jaeger-client-go/transport_udp.go
@@ -15,10 +15,12 @@
 package jaeger
 
 import (
+	"context"
 	"errors"
 	"fmt"
 
 	"github.com/uber/jaeger-client-go/internal/reporterstats"
+	"github.com/uber/jaeger-client-go/log"
 	"github.com/uber/jaeger-client-go/thrift"
 	j "github.com/uber/jaeger-client-go/thrift-gen/jaeger"
 	"github.com/uber/jaeger-client-go/utils"
@@ -57,35 +59,57 @@
 	failedToEmitSpans    int64
 }
 
-// NewUDPTransport creates a reporter that submits spans to jaeger-agent.
+// UDPTransportParams allows specifying options for initializing a UDPTransport. An instance of this struct should
+// be passed to NewUDPTransportWithParams.
+type UDPTransportParams struct {
+	utils.AgentClientUDPParams
+}
+
+// NewUDPTransportWithParams creates a reporter that submits spans to jaeger-agent.
 // TODO: (breaking change) move to transport/ package.
-func NewUDPTransport(hostPort string, maxPacketSize int) (Transport, error) {
-	if len(hostPort) == 0 {
-		hostPort = fmt.Sprintf("%s:%d", DefaultUDPSpanServerHost, DefaultUDPSpanServerPort)
+func NewUDPTransportWithParams(params UDPTransportParams) (Transport, error) {
+	if len(params.HostPort) == 0 {
+		params.HostPort = fmt.Sprintf("%s:%d", DefaultUDPSpanServerHost, DefaultUDPSpanServerPort)
 	}
-	if maxPacketSize == 0 {
-		maxPacketSize = utils.UDPPacketMaxLength
+
+	if params.Logger == nil {
+		params.Logger = log.StdLogger
+	}
+
+	if params.MaxPacketSize == 0 {
+		params.MaxPacketSize = utils.UDPPacketMaxLength
 	}
 
 	protocolFactory := thrift.NewTCompactProtocolFactory()
 
 	// Each span is first written to thriftBuffer to determine its size in bytes.
-	thriftBuffer := thrift.NewTMemoryBufferLen(maxPacketSize)
+	thriftBuffer := thrift.NewTMemoryBufferLen(params.MaxPacketSize)
 	thriftProtocol := protocolFactory.GetProtocol(thriftBuffer)
 
-	client, err := utils.NewAgentClientUDP(hostPort, maxPacketSize)
+	client, err := utils.NewAgentClientUDPWithParams(params.AgentClientUDPParams)
 	if err != nil {
 		return nil, err
 	}
 
 	return &udpSender{
 		client:         client,
-		maxSpanBytes:   maxPacketSize - emitBatchOverhead,
+		maxSpanBytes:   params.MaxPacketSize - emitBatchOverhead,
 		thriftBuffer:   thriftBuffer,
 		thriftProtocol: thriftProtocol,
 	}, nil
 }
 
+// NewUDPTransport creates a reporter that submits spans to jaeger-agent.
+// TODO: (breaking change) move to transport/ package.
+func NewUDPTransport(hostPort string, maxPacketSize int) (Transport, error) {
+	return NewUDPTransportWithParams(UDPTransportParams{
+		AgentClientUDPParams: utils.AgentClientUDPParams{
+			HostPort:      hostPort,
+			MaxPacketSize: maxPacketSize,
+		},
+	})
+}
+
 // SetReporterStats implements reporterstats.Receiver.
 func (s *udpSender) SetReporterStats(rs reporterstats.ReporterStats) {
 	s.reporterStats = rs
@@ -93,7 +117,7 @@
 
 func (s *udpSender) calcSizeOfSerializedThrift(thriftStruct thrift.TStruct) int {
 	s.thriftBuffer.Reset()
-	_ = thriftStruct.Write(s.thriftProtocol)
+	_ = thriftStruct.Write(context.Background(), s.thriftProtocol)
 	return s.thriftBuffer.Len()
 }
 
@@ -132,7 +156,7 @@
 	}
 	s.batchSeqNo++
 	batchSeqNo := int64(s.batchSeqNo)
-	err := s.client.EmitBatch(&j.Batch{
+	err := s.client.EmitBatch(context.Background(), &j.Batch{
 		Process: s.process,
 		Spans:   s.spanBuffer,
 		SeqNo:   &batchSeqNo,