diff --git a/vendor/github.com/uber/jaeger-client-go/thrift-gen/sampling/sampling.go b/vendor/github.com/uber/jaeger-client-go/thrift-gen/sampling/sampling.go
new file mode 100644
index 0000000..3bffa5b
--- /dev/null
+++ b/vendor/github.com/uber/jaeger-client-go/thrift-gen/sampling/sampling.go
@@ -0,0 +1,1323 @@
+// Code generated by Thrift Compiler (0.14.1). DO NOT EDIT.
+
+package sampling
+
+import(
+	"bytes"
+	"context"
+	"database/sql/driver"
+	"errors"
+	"fmt"
+	"time"
+	"github.com/uber/jaeger-client-go/thrift"
+)
+
+// (needed to ensure safety because of naive import list construction.)
+var _ = thrift.ZERO
+var _ = fmt.Printf
+var _ = context.Background
+var _ = time.Now
+var _ = bytes.Equal
+
+type SamplingStrategyType int64
+const (
+  SamplingStrategyType_PROBABILISTIC SamplingStrategyType = 0
+  SamplingStrategyType_RATE_LIMITING SamplingStrategyType = 1
+)
+
+func (p SamplingStrategyType) String() string {
+  switch p {
+  case SamplingStrategyType_PROBABILISTIC: return "PROBABILISTIC"
+  case SamplingStrategyType_RATE_LIMITING: return "RATE_LIMITING"
+  }
+  return "<UNSET>"
+}
+
+func SamplingStrategyTypeFromString(s string) (SamplingStrategyType, error) {
+  switch s {
+  case "PROBABILISTIC": return SamplingStrategyType_PROBABILISTIC, nil 
+  case "RATE_LIMITING": return SamplingStrategyType_RATE_LIMITING, nil 
+  }
+  return SamplingStrategyType(0), fmt.Errorf("not a valid SamplingStrategyType string")
+}
+
+
+func SamplingStrategyTypePtr(v SamplingStrategyType) *SamplingStrategyType { return &v }
+
+func (p SamplingStrategyType) MarshalText() ([]byte, error) {
+return []byte(p.String()), nil
+}
+
+func (p *SamplingStrategyType) UnmarshalText(text []byte) error {
+q, err := SamplingStrategyTypeFromString(string(text))
+if (err != nil) {
+return err
+}
+*p = q
+return nil
+}
+
+func (p *SamplingStrategyType) Scan(value interface{}) error {
+v, ok := value.(int64)
+if !ok {
+return errors.New("Scan value is not int64")
+}
+*p = SamplingStrategyType(v)
+return nil
+}
+
+func (p * SamplingStrategyType) Value() (driver.Value, error) {
+  if p == nil {
+    return nil, nil
+  }
+return int64(*p), nil
+}
+// Attributes:
+//  - SamplingRate
+type ProbabilisticSamplingStrategy struct {
+  SamplingRate float64 `thrift:"samplingRate,1,required" db:"samplingRate" json:"samplingRate"`
+}
+
+func NewProbabilisticSamplingStrategy() *ProbabilisticSamplingStrategy {
+  return &ProbabilisticSamplingStrategy{}
+}
+
+
+func (p *ProbabilisticSamplingStrategy) GetSamplingRate() float64 {
+  return p.SamplingRate
+}
+func (p *ProbabilisticSamplingStrategy) Read(ctx context.Context, iprot thrift.TProtocol) error {
+  if _, err := iprot.ReadStructBegin(ctx); err != nil {
+    return thrift.PrependError(fmt.Sprintf("%T read error: ", p), err)
+  }
+
+  var issetSamplingRate bool = false;
+
+  for {
+    _, fieldTypeId, fieldId, err := iprot.ReadFieldBegin(ctx)
+    if err != nil {
+      return thrift.PrependError(fmt.Sprintf("%T field %d read error: ", p, fieldId), err)
+    }
+    if fieldTypeId == thrift.STOP { break; }
+    switch fieldId {
+    case 1:
+      if fieldTypeId == thrift.DOUBLE {
+        if err := p.ReadField1(ctx, iprot); err != nil {
+          return err
+        }
+        issetSamplingRate = true
+      } else {
+        if err := iprot.Skip(ctx, fieldTypeId); err != nil {
+          return err
+        }
+      }
+    default:
+      if err := iprot.Skip(ctx, fieldTypeId); err != nil {
+        return err
+      }
+    }
+    if err := iprot.ReadFieldEnd(ctx); err != nil {
+      return err
+    }
+  }
+  if err := iprot.ReadStructEnd(ctx); err != nil {
+    return thrift.PrependError(fmt.Sprintf("%T read struct end error: ", p), err)
+  }
+  if !issetSamplingRate{
+    return thrift.NewTProtocolExceptionWithType(thrift.INVALID_DATA, fmt.Errorf("Required field SamplingRate is not set"));
+  }
+  return nil
+}
+
+func (p *ProbabilisticSamplingStrategy)  ReadField1(ctx context.Context, iprot thrift.TProtocol) error {
+  if v, err := iprot.ReadDouble(ctx); err != nil {
+  return thrift.PrependError("error reading field 1: ", err)
+} else {
+  p.SamplingRate = v
+}
+  return nil
+}
+
+func (p *ProbabilisticSamplingStrategy) Write(ctx context.Context, oprot thrift.TProtocol) error {
+  if err := oprot.WriteStructBegin(ctx, "ProbabilisticSamplingStrategy"); err != nil {
+    return thrift.PrependError(fmt.Sprintf("%T write struct begin error: ", p), err) }
+  if p != nil {
+    if err := p.writeField1(ctx, oprot); err != nil { return err }
+  }
+  if err := oprot.WriteFieldStop(ctx); err != nil {
+    return thrift.PrependError("write field stop error: ", err) }
+  if err := oprot.WriteStructEnd(ctx); err != nil {
+    return thrift.PrependError("write struct stop error: ", err) }
+  return nil
+}
+
+func (p *ProbabilisticSamplingStrategy) writeField1(ctx context.Context, oprot thrift.TProtocol) (err error) {
+  if err := oprot.WriteFieldBegin(ctx, "samplingRate", thrift.DOUBLE, 1); err != nil {
+    return thrift.PrependError(fmt.Sprintf("%T write field begin error 1:samplingRate: ", p), err) }
+  if err := oprot.WriteDouble(ctx, float64(p.SamplingRate)); err != nil {
+  return thrift.PrependError(fmt.Sprintf("%T.samplingRate (1) field write error: ", p), err) }
+  if err := oprot.WriteFieldEnd(ctx); err != nil {
+    return thrift.PrependError(fmt.Sprintf("%T write field end error 1:samplingRate: ", p), err) }
+  return err
+}
+
+func (p *ProbabilisticSamplingStrategy) Equals(other *ProbabilisticSamplingStrategy) bool {
+  if p == other {
+    return true
+  } else if p == nil || other == nil {
+    return false
+  }
+  if p.SamplingRate != other.SamplingRate { return false }
+  return true
+}
+
+func (p *ProbabilisticSamplingStrategy) String() string {
+  if p == nil {
+    return "<nil>"
+  }
+  return fmt.Sprintf("ProbabilisticSamplingStrategy(%+v)", *p)
+}
+
+// Attributes:
+//  - MaxTracesPerSecond
+type RateLimitingSamplingStrategy struct {
+  MaxTracesPerSecond int16 `thrift:"maxTracesPerSecond,1,required" db:"maxTracesPerSecond" json:"maxTracesPerSecond"`
+}
+
+func NewRateLimitingSamplingStrategy() *RateLimitingSamplingStrategy {
+  return &RateLimitingSamplingStrategy{}
+}
+
+
+func (p *RateLimitingSamplingStrategy) GetMaxTracesPerSecond() int16 {
+  return p.MaxTracesPerSecond
+}
+func (p *RateLimitingSamplingStrategy) Read(ctx context.Context, iprot thrift.TProtocol) error {
+  if _, err := iprot.ReadStructBegin(ctx); err != nil {
+    return thrift.PrependError(fmt.Sprintf("%T read error: ", p), err)
+  }
+
+  var issetMaxTracesPerSecond bool = false;
+
+  for {
+    _, fieldTypeId, fieldId, err := iprot.ReadFieldBegin(ctx)
+    if err != nil {
+      return thrift.PrependError(fmt.Sprintf("%T field %d read error: ", p, fieldId), err)
+    }
+    if fieldTypeId == thrift.STOP { break; }
+    switch fieldId {
+    case 1:
+      if fieldTypeId == thrift.I16 {
+        if err := p.ReadField1(ctx, iprot); err != nil {
+          return err
+        }
+        issetMaxTracesPerSecond = true
+      } else {
+        if err := iprot.Skip(ctx, fieldTypeId); err != nil {
+          return err
+        }
+      }
+    default:
+      if err := iprot.Skip(ctx, fieldTypeId); err != nil {
+        return err
+      }
+    }
+    if err := iprot.ReadFieldEnd(ctx); err != nil {
+      return err
+    }
+  }
+  if err := iprot.ReadStructEnd(ctx); err != nil {
+    return thrift.PrependError(fmt.Sprintf("%T read struct end error: ", p), err)
+  }
+  if !issetMaxTracesPerSecond{
+    return thrift.NewTProtocolExceptionWithType(thrift.INVALID_DATA, fmt.Errorf("Required field MaxTracesPerSecond is not set"));
+  }
+  return nil
+}
+
+func (p *RateLimitingSamplingStrategy)  ReadField1(ctx context.Context, iprot thrift.TProtocol) error {
+  if v, err := iprot.ReadI16(ctx); err != nil {
+  return thrift.PrependError("error reading field 1: ", err)
+} else {
+  p.MaxTracesPerSecond = v
+}
+  return nil
+}
+
+func (p *RateLimitingSamplingStrategy) Write(ctx context.Context, oprot thrift.TProtocol) error {
+  if err := oprot.WriteStructBegin(ctx, "RateLimitingSamplingStrategy"); err != nil {
+    return thrift.PrependError(fmt.Sprintf("%T write struct begin error: ", p), err) }
+  if p != nil {
+    if err := p.writeField1(ctx, oprot); err != nil { return err }
+  }
+  if err := oprot.WriteFieldStop(ctx); err != nil {
+    return thrift.PrependError("write field stop error: ", err) }
+  if err := oprot.WriteStructEnd(ctx); err != nil {
+    return thrift.PrependError("write struct stop error: ", err) }
+  return nil
+}
+
+func (p *RateLimitingSamplingStrategy) writeField1(ctx context.Context, oprot thrift.TProtocol) (err error) {
+  if err := oprot.WriteFieldBegin(ctx, "maxTracesPerSecond", thrift.I16, 1); err != nil {
+    return thrift.PrependError(fmt.Sprintf("%T write field begin error 1:maxTracesPerSecond: ", p), err) }
+  if err := oprot.WriteI16(ctx, int16(p.MaxTracesPerSecond)); err != nil {
+  return thrift.PrependError(fmt.Sprintf("%T.maxTracesPerSecond (1) field write error: ", p), err) }
+  if err := oprot.WriteFieldEnd(ctx); err != nil {
+    return thrift.PrependError(fmt.Sprintf("%T write field end error 1:maxTracesPerSecond: ", p), err) }
+  return err
+}
+
+func (p *RateLimitingSamplingStrategy) Equals(other *RateLimitingSamplingStrategy) bool {
+  if p == other {
+    return true
+  } else if p == nil || other == nil {
+    return false
+  }
+  if p.MaxTracesPerSecond != other.MaxTracesPerSecond { return false }
+  return true
+}
+
+func (p *RateLimitingSamplingStrategy) String() string {
+  if p == nil {
+    return "<nil>"
+  }
+  return fmt.Sprintf("RateLimitingSamplingStrategy(%+v)", *p)
+}
+
+// Attributes:
+//  - Operation
+//  - ProbabilisticSampling
+type OperationSamplingStrategy struct {
+  Operation string `thrift:"operation,1,required" db:"operation" json:"operation"`
+  ProbabilisticSampling *ProbabilisticSamplingStrategy `thrift:"probabilisticSampling,2,required" db:"probabilisticSampling" json:"probabilisticSampling"`
+}
+
+func NewOperationSamplingStrategy() *OperationSamplingStrategy {
+  return &OperationSamplingStrategy{}
+}
+
+
+func (p *OperationSamplingStrategy) GetOperation() string {
+  return p.Operation
+}
+var OperationSamplingStrategy_ProbabilisticSampling_DEFAULT *ProbabilisticSamplingStrategy
+func (p *OperationSamplingStrategy) GetProbabilisticSampling() *ProbabilisticSamplingStrategy {
+  if !p.IsSetProbabilisticSampling() {
+    return OperationSamplingStrategy_ProbabilisticSampling_DEFAULT
+  }
+return p.ProbabilisticSampling
+}
+func (p *OperationSamplingStrategy) IsSetProbabilisticSampling() bool {
+  return p.ProbabilisticSampling != nil
+}
+
+func (p *OperationSamplingStrategy) Read(ctx context.Context, iprot thrift.TProtocol) error {
+  if _, err := iprot.ReadStructBegin(ctx); err != nil {
+    return thrift.PrependError(fmt.Sprintf("%T read error: ", p), err)
+  }
+
+  var issetOperation bool = false;
+  var issetProbabilisticSampling bool = false;
+
+  for {
+    _, fieldTypeId, fieldId, err := iprot.ReadFieldBegin(ctx)
+    if err != nil {
+      return thrift.PrependError(fmt.Sprintf("%T field %d read error: ", p, fieldId), err)
+    }
+    if fieldTypeId == thrift.STOP { break; }
+    switch fieldId {
+    case 1:
+      if fieldTypeId == thrift.STRING {
+        if err := p.ReadField1(ctx, iprot); err != nil {
+          return err
+        }
+        issetOperation = true
+      } else {
+        if err := iprot.Skip(ctx, fieldTypeId); err != nil {
+          return err
+        }
+      }
+    case 2:
+      if fieldTypeId == thrift.STRUCT {
+        if err := p.ReadField2(ctx, iprot); err != nil {
+          return err
+        }
+        issetProbabilisticSampling = true
+      } else {
+        if err := iprot.Skip(ctx, fieldTypeId); err != nil {
+          return err
+        }
+      }
+    default:
+      if err := iprot.Skip(ctx, fieldTypeId); err != nil {
+        return err
+      }
+    }
+    if err := iprot.ReadFieldEnd(ctx); err != nil {
+      return err
+    }
+  }
+  if err := iprot.ReadStructEnd(ctx); err != nil {
+    return thrift.PrependError(fmt.Sprintf("%T read struct end error: ", p), err)
+  }
+  if !issetOperation{
+    return thrift.NewTProtocolExceptionWithType(thrift.INVALID_DATA, fmt.Errorf("Required field Operation is not set"));
+  }
+  if !issetProbabilisticSampling{
+    return thrift.NewTProtocolExceptionWithType(thrift.INVALID_DATA, fmt.Errorf("Required field ProbabilisticSampling is not set"));
+  }
+  return nil
+}
+
+func (p *OperationSamplingStrategy)  ReadField1(ctx context.Context, iprot thrift.TProtocol) error {
+  if v, err := iprot.ReadString(ctx); err != nil {
+  return thrift.PrependError("error reading field 1: ", err)
+} else {
+  p.Operation = v
+}
+  return nil
+}
+
+func (p *OperationSamplingStrategy)  ReadField2(ctx context.Context, iprot thrift.TProtocol) error {
+  p.ProbabilisticSampling = &ProbabilisticSamplingStrategy{}
+  if err := p.ProbabilisticSampling.Read(ctx, iprot); err != nil {
+    return thrift.PrependError(fmt.Sprintf("%T error reading struct: ", p.ProbabilisticSampling), err)
+  }
+  return nil
+}
+
+func (p *OperationSamplingStrategy) Write(ctx context.Context, oprot thrift.TProtocol) error {
+  if err := oprot.WriteStructBegin(ctx, "OperationSamplingStrategy"); err != nil {
+    return thrift.PrependError(fmt.Sprintf("%T write struct begin error: ", p), err) }
+  if p != nil {
+    if err := p.writeField1(ctx, oprot); err != nil { return err }
+    if err := p.writeField2(ctx, oprot); err != nil { return err }
+  }
+  if err := oprot.WriteFieldStop(ctx); err != nil {
+    return thrift.PrependError("write field stop error: ", err) }
+  if err := oprot.WriteStructEnd(ctx); err != nil {
+    return thrift.PrependError("write struct stop error: ", err) }
+  return nil
+}
+
+func (p *OperationSamplingStrategy) writeField1(ctx context.Context, oprot thrift.TProtocol) (err error) {
+  if err := oprot.WriteFieldBegin(ctx, "operation", thrift.STRING, 1); err != nil {
+    return thrift.PrependError(fmt.Sprintf("%T write field begin error 1:operation: ", p), err) }
+  if err := oprot.WriteString(ctx, string(p.Operation)); err != nil {
+  return thrift.PrependError(fmt.Sprintf("%T.operation (1) field write error: ", p), err) }
+  if err := oprot.WriteFieldEnd(ctx); err != nil {
+    return thrift.PrependError(fmt.Sprintf("%T write field end error 1:operation: ", p), err) }
+  return err
+}
+
+func (p *OperationSamplingStrategy) writeField2(ctx context.Context, oprot thrift.TProtocol) (err error) {
+  if err := oprot.WriteFieldBegin(ctx, "probabilisticSampling", thrift.STRUCT, 2); err != nil {
+    return thrift.PrependError(fmt.Sprintf("%T write field begin error 2:probabilisticSampling: ", p), err) }
+  if err := p.ProbabilisticSampling.Write(ctx, oprot); err != nil {
+    return thrift.PrependError(fmt.Sprintf("%T error writing struct: ", p.ProbabilisticSampling), err)
+  }
+  if err := oprot.WriteFieldEnd(ctx); err != nil {
+    return thrift.PrependError(fmt.Sprintf("%T write field end error 2:probabilisticSampling: ", p), err) }
+  return err
+}
+
+func (p *OperationSamplingStrategy) Equals(other *OperationSamplingStrategy) bool {
+  if p == other {
+    return true
+  } else if p == nil || other == nil {
+    return false
+  }
+  if p.Operation != other.Operation { return false }
+  if !p.ProbabilisticSampling.Equals(other.ProbabilisticSampling) { return false }
+  return true
+}
+
+func (p *OperationSamplingStrategy) String() string {
+  if p == nil {
+    return "<nil>"
+  }
+  return fmt.Sprintf("OperationSamplingStrategy(%+v)", *p)
+}
+
+// Attributes:
+//  - DefaultSamplingProbability
+//  - DefaultLowerBoundTracesPerSecond
+//  - PerOperationStrategies
+//  - DefaultUpperBoundTracesPerSecond
+type PerOperationSamplingStrategies struct {
+  DefaultSamplingProbability float64 `thrift:"defaultSamplingProbability,1,required" db:"defaultSamplingProbability" json:"defaultSamplingProbability"`
+  DefaultLowerBoundTracesPerSecond float64 `thrift:"defaultLowerBoundTracesPerSecond,2,required" db:"defaultLowerBoundTracesPerSecond" json:"defaultLowerBoundTracesPerSecond"`
+  PerOperationStrategies []*OperationSamplingStrategy `thrift:"perOperationStrategies,3,required" db:"perOperationStrategies" json:"perOperationStrategies"`
+  DefaultUpperBoundTracesPerSecond *float64 `thrift:"defaultUpperBoundTracesPerSecond,4" db:"defaultUpperBoundTracesPerSecond" json:"defaultUpperBoundTracesPerSecond,omitempty"`
+}
+
+func NewPerOperationSamplingStrategies() *PerOperationSamplingStrategies {
+  return &PerOperationSamplingStrategies{}
+}
+
+
+func (p *PerOperationSamplingStrategies) GetDefaultSamplingProbability() float64 {
+  return p.DefaultSamplingProbability
+}
+
+func (p *PerOperationSamplingStrategies) GetDefaultLowerBoundTracesPerSecond() float64 {
+  return p.DefaultLowerBoundTracesPerSecond
+}
+
+func (p *PerOperationSamplingStrategies) GetPerOperationStrategies() []*OperationSamplingStrategy {
+  return p.PerOperationStrategies
+}
+var PerOperationSamplingStrategies_DefaultUpperBoundTracesPerSecond_DEFAULT float64
+func (p *PerOperationSamplingStrategies) GetDefaultUpperBoundTracesPerSecond() float64 {
+  if !p.IsSetDefaultUpperBoundTracesPerSecond() {
+    return PerOperationSamplingStrategies_DefaultUpperBoundTracesPerSecond_DEFAULT
+  }
+return *p.DefaultUpperBoundTracesPerSecond
+}
+func (p *PerOperationSamplingStrategies) IsSetDefaultUpperBoundTracesPerSecond() bool {
+  return p.DefaultUpperBoundTracesPerSecond != nil
+}
+
+func (p *PerOperationSamplingStrategies) Read(ctx context.Context, iprot thrift.TProtocol) error {
+  if _, err := iprot.ReadStructBegin(ctx); err != nil {
+    return thrift.PrependError(fmt.Sprintf("%T read error: ", p), err)
+  }
+
+  var issetDefaultSamplingProbability bool = false;
+  var issetDefaultLowerBoundTracesPerSecond bool = false;
+  var issetPerOperationStrategies bool = false;
+
+  for {
+    _, fieldTypeId, fieldId, err := iprot.ReadFieldBegin(ctx)
+    if err != nil {
+      return thrift.PrependError(fmt.Sprintf("%T field %d read error: ", p, fieldId), err)
+    }
+    if fieldTypeId == thrift.STOP { break; }
+    switch fieldId {
+    case 1:
+      if fieldTypeId == thrift.DOUBLE {
+        if err := p.ReadField1(ctx, iprot); err != nil {
+          return err
+        }
+        issetDefaultSamplingProbability = true
+      } else {
+        if err := iprot.Skip(ctx, fieldTypeId); err != nil {
+          return err
+        }
+      }
+    case 2:
+      if fieldTypeId == thrift.DOUBLE {
+        if err := p.ReadField2(ctx, iprot); err != nil {
+          return err
+        }
+        issetDefaultLowerBoundTracesPerSecond = true
+      } else {
+        if err := iprot.Skip(ctx, fieldTypeId); err != nil {
+          return err
+        }
+      }
+    case 3:
+      if fieldTypeId == thrift.LIST {
+        if err := p.ReadField3(ctx, iprot); err != nil {
+          return err
+        }
+        issetPerOperationStrategies = true
+      } else {
+        if err := iprot.Skip(ctx, fieldTypeId); err != nil {
+          return err
+        }
+      }
+    case 4:
+      if fieldTypeId == thrift.DOUBLE {
+        if err := p.ReadField4(ctx, iprot); err != nil {
+          return err
+        }
+      } else {
+        if err := iprot.Skip(ctx, fieldTypeId); err != nil {
+          return err
+        }
+      }
+    default:
+      if err := iprot.Skip(ctx, fieldTypeId); err != nil {
+        return err
+      }
+    }
+    if err := iprot.ReadFieldEnd(ctx); err != nil {
+      return err
+    }
+  }
+  if err := iprot.ReadStructEnd(ctx); err != nil {
+    return thrift.PrependError(fmt.Sprintf("%T read struct end error: ", p), err)
+  }
+  if !issetDefaultSamplingProbability{
+    return thrift.NewTProtocolExceptionWithType(thrift.INVALID_DATA, fmt.Errorf("Required field DefaultSamplingProbability is not set"));
+  }
+  if !issetDefaultLowerBoundTracesPerSecond{
+    return thrift.NewTProtocolExceptionWithType(thrift.INVALID_DATA, fmt.Errorf("Required field DefaultLowerBoundTracesPerSecond is not set"));
+  }
+  if !issetPerOperationStrategies{
+    return thrift.NewTProtocolExceptionWithType(thrift.INVALID_DATA, fmt.Errorf("Required field PerOperationStrategies is not set"));
+  }
+  return nil
+}
+
+func (p *PerOperationSamplingStrategies)  ReadField1(ctx context.Context, iprot thrift.TProtocol) error {
+  if v, err := iprot.ReadDouble(ctx); err != nil {
+  return thrift.PrependError("error reading field 1: ", err)
+} else {
+  p.DefaultSamplingProbability = v
+}
+  return nil
+}
+
+func (p *PerOperationSamplingStrategies)  ReadField2(ctx context.Context, iprot thrift.TProtocol) error {
+  if v, err := iprot.ReadDouble(ctx); err != nil {
+  return thrift.PrependError("error reading field 2: ", err)
+} else {
+  p.DefaultLowerBoundTracesPerSecond = v
+}
+  return nil
+}
+
+func (p *PerOperationSamplingStrategies)  ReadField3(ctx context.Context, iprot thrift.TProtocol) error {
+  _, size, err := iprot.ReadListBegin(ctx)
+  if err != nil {
+    return thrift.PrependError("error reading list begin: ", err)
+  }
+  tSlice := make([]*OperationSamplingStrategy, 0, size)
+  p.PerOperationStrategies =  tSlice
+  for i := 0; i < size; i ++ {
+    _elem0 := &OperationSamplingStrategy{}
+    if err := _elem0.Read(ctx, iprot); err != nil {
+      return thrift.PrependError(fmt.Sprintf("%T error reading struct: ", _elem0), err)
+    }
+    p.PerOperationStrategies = append(p.PerOperationStrategies, _elem0)
+  }
+  if err := iprot.ReadListEnd(ctx); err != nil {
+    return thrift.PrependError("error reading list end: ", err)
+  }
+  return nil
+}
+
+func (p *PerOperationSamplingStrategies)  ReadField4(ctx context.Context, iprot thrift.TProtocol) error {
+  if v, err := iprot.ReadDouble(ctx); err != nil {
+  return thrift.PrependError("error reading field 4: ", err)
+} else {
+  p.DefaultUpperBoundTracesPerSecond = &v
+}
+  return nil
+}
+
+func (p *PerOperationSamplingStrategies) Write(ctx context.Context, oprot thrift.TProtocol) error {
+  if err := oprot.WriteStructBegin(ctx, "PerOperationSamplingStrategies"); err != nil {
+    return thrift.PrependError(fmt.Sprintf("%T write struct begin error: ", p), err) }
+  if p != nil {
+    if err := p.writeField1(ctx, oprot); err != nil { return err }
+    if err := p.writeField2(ctx, oprot); err != nil { return err }
+    if err := p.writeField3(ctx, oprot); err != nil { return err }
+    if err := p.writeField4(ctx, oprot); err != nil { return err }
+  }
+  if err := oprot.WriteFieldStop(ctx); err != nil {
+    return thrift.PrependError("write field stop error: ", err) }
+  if err := oprot.WriteStructEnd(ctx); err != nil {
+    return thrift.PrependError("write struct stop error: ", err) }
+  return nil
+}
+
+func (p *PerOperationSamplingStrategies) writeField1(ctx context.Context, oprot thrift.TProtocol) (err error) {
+  if err := oprot.WriteFieldBegin(ctx, "defaultSamplingProbability", thrift.DOUBLE, 1); err != nil {
+    return thrift.PrependError(fmt.Sprintf("%T write field begin error 1:defaultSamplingProbability: ", p), err) }
+  if err := oprot.WriteDouble(ctx, float64(p.DefaultSamplingProbability)); err != nil {
+  return thrift.PrependError(fmt.Sprintf("%T.defaultSamplingProbability (1) field write error: ", p), err) }
+  if err := oprot.WriteFieldEnd(ctx); err != nil {
+    return thrift.PrependError(fmt.Sprintf("%T write field end error 1:defaultSamplingProbability: ", p), err) }
+  return err
+}
+
+func (p *PerOperationSamplingStrategies) writeField2(ctx context.Context, oprot thrift.TProtocol) (err error) {
+  if err := oprot.WriteFieldBegin(ctx, "defaultLowerBoundTracesPerSecond", thrift.DOUBLE, 2); err != nil {
+    return thrift.PrependError(fmt.Sprintf("%T write field begin error 2:defaultLowerBoundTracesPerSecond: ", p), err) }
+  if err := oprot.WriteDouble(ctx, float64(p.DefaultLowerBoundTracesPerSecond)); err != nil {
+  return thrift.PrependError(fmt.Sprintf("%T.defaultLowerBoundTracesPerSecond (2) field write error: ", p), err) }
+  if err := oprot.WriteFieldEnd(ctx); err != nil {
+    return thrift.PrependError(fmt.Sprintf("%T write field end error 2:defaultLowerBoundTracesPerSecond: ", p), err) }
+  return err
+}
+
+func (p *PerOperationSamplingStrategies) writeField3(ctx context.Context, oprot thrift.TProtocol) (err error) {
+  if err := oprot.WriteFieldBegin(ctx, "perOperationStrategies", thrift.LIST, 3); err != nil {
+    return thrift.PrependError(fmt.Sprintf("%T write field begin error 3:perOperationStrategies: ", p), err) }
+  if err := oprot.WriteListBegin(ctx, thrift.STRUCT, len(p.PerOperationStrategies)); err != nil {
+    return thrift.PrependError("error writing list begin: ", err)
+  }
+  for _, v := range p.PerOperationStrategies {
+    if err := v.Write(ctx, oprot); err != nil {
+      return thrift.PrependError(fmt.Sprintf("%T error writing struct: ", v), err)
+    }
+  }
+  if err := oprot.WriteListEnd(ctx); err != nil {
+    return thrift.PrependError("error writing list end: ", err)
+  }
+  if err := oprot.WriteFieldEnd(ctx); err != nil {
+    return thrift.PrependError(fmt.Sprintf("%T write field end error 3:perOperationStrategies: ", p), err) }
+  return err
+}
+
+func (p *PerOperationSamplingStrategies) writeField4(ctx context.Context, oprot thrift.TProtocol) (err error) {
+  if p.IsSetDefaultUpperBoundTracesPerSecond() {
+    if err := oprot.WriteFieldBegin(ctx, "defaultUpperBoundTracesPerSecond", thrift.DOUBLE, 4); err != nil {
+      return thrift.PrependError(fmt.Sprintf("%T write field begin error 4:defaultUpperBoundTracesPerSecond: ", p), err) }
+    if err := oprot.WriteDouble(ctx, float64(*p.DefaultUpperBoundTracesPerSecond)); err != nil {
+    return thrift.PrependError(fmt.Sprintf("%T.defaultUpperBoundTracesPerSecond (4) field write error: ", p), err) }
+    if err := oprot.WriteFieldEnd(ctx); err != nil {
+      return thrift.PrependError(fmt.Sprintf("%T write field end error 4:defaultUpperBoundTracesPerSecond: ", p), err) }
+  }
+  return err
+}
+
+func (p *PerOperationSamplingStrategies) Equals(other *PerOperationSamplingStrategies) bool {
+  if p == other {
+    return true
+  } else if p == nil || other == nil {
+    return false
+  }
+  if p.DefaultSamplingProbability != other.DefaultSamplingProbability { return false }
+  if p.DefaultLowerBoundTracesPerSecond != other.DefaultLowerBoundTracesPerSecond { return false }
+  if len(p.PerOperationStrategies) != len(other.PerOperationStrategies) { return false }
+  for i, _tgt := range p.PerOperationStrategies {
+    _src1 := other.PerOperationStrategies[i]
+    if !_tgt.Equals(_src1) { return false }
+  }
+  if p.DefaultUpperBoundTracesPerSecond != other.DefaultUpperBoundTracesPerSecond {
+    if p.DefaultUpperBoundTracesPerSecond == nil || other.DefaultUpperBoundTracesPerSecond == nil {
+      return false
+    }
+    if (*p.DefaultUpperBoundTracesPerSecond) != (*other.DefaultUpperBoundTracesPerSecond) { return false }
+  }
+  return true
+}
+
+func (p *PerOperationSamplingStrategies) String() string {
+  if p == nil {
+    return "<nil>"
+  }
+  return fmt.Sprintf("PerOperationSamplingStrategies(%+v)", *p)
+}
+
+// Attributes:
+//  - StrategyType
+//  - ProbabilisticSampling
+//  - RateLimitingSampling
+//  - OperationSampling
+type SamplingStrategyResponse struct {
+  StrategyType SamplingStrategyType `thrift:"strategyType,1,required" db:"strategyType" json:"strategyType"`
+  ProbabilisticSampling *ProbabilisticSamplingStrategy `thrift:"probabilisticSampling,2" db:"probabilisticSampling" json:"probabilisticSampling,omitempty"`
+  RateLimitingSampling *RateLimitingSamplingStrategy `thrift:"rateLimitingSampling,3" db:"rateLimitingSampling" json:"rateLimitingSampling,omitempty"`
+  OperationSampling *PerOperationSamplingStrategies `thrift:"operationSampling,4" db:"operationSampling" json:"operationSampling,omitempty"`
+}
+
+func NewSamplingStrategyResponse() *SamplingStrategyResponse {
+  return &SamplingStrategyResponse{}
+}
+
+
+func (p *SamplingStrategyResponse) GetStrategyType() SamplingStrategyType {
+  return p.StrategyType
+}
+var SamplingStrategyResponse_ProbabilisticSampling_DEFAULT *ProbabilisticSamplingStrategy
+func (p *SamplingStrategyResponse) GetProbabilisticSampling() *ProbabilisticSamplingStrategy {
+  if !p.IsSetProbabilisticSampling() {
+    return SamplingStrategyResponse_ProbabilisticSampling_DEFAULT
+  }
+return p.ProbabilisticSampling
+}
+var SamplingStrategyResponse_RateLimitingSampling_DEFAULT *RateLimitingSamplingStrategy
+func (p *SamplingStrategyResponse) GetRateLimitingSampling() *RateLimitingSamplingStrategy {
+  if !p.IsSetRateLimitingSampling() {
+    return SamplingStrategyResponse_RateLimitingSampling_DEFAULT
+  }
+return p.RateLimitingSampling
+}
+var SamplingStrategyResponse_OperationSampling_DEFAULT *PerOperationSamplingStrategies
+func (p *SamplingStrategyResponse) GetOperationSampling() *PerOperationSamplingStrategies {
+  if !p.IsSetOperationSampling() {
+    return SamplingStrategyResponse_OperationSampling_DEFAULT
+  }
+return p.OperationSampling
+}
+func (p *SamplingStrategyResponse) IsSetProbabilisticSampling() bool {
+  return p.ProbabilisticSampling != nil
+}
+
+func (p *SamplingStrategyResponse) IsSetRateLimitingSampling() bool {
+  return p.RateLimitingSampling != nil
+}
+
+func (p *SamplingStrategyResponse) IsSetOperationSampling() bool {
+  return p.OperationSampling != nil
+}
+
+func (p *SamplingStrategyResponse) Read(ctx context.Context, iprot thrift.TProtocol) error {
+  if _, err := iprot.ReadStructBegin(ctx); err != nil {
+    return thrift.PrependError(fmt.Sprintf("%T read error: ", p), err)
+  }
+
+  var issetStrategyType bool = false;
+
+  for {
+    _, fieldTypeId, fieldId, err := iprot.ReadFieldBegin(ctx)
+    if err != nil {
+      return thrift.PrependError(fmt.Sprintf("%T field %d read error: ", p, fieldId), err)
+    }
+    if fieldTypeId == thrift.STOP { break; }
+    switch fieldId {
+    case 1:
+      if fieldTypeId == thrift.I32 {
+        if err := p.ReadField1(ctx, iprot); err != nil {
+          return err
+        }
+        issetStrategyType = true
+      } else {
+        if err := iprot.Skip(ctx, fieldTypeId); err != nil {
+          return err
+        }
+      }
+    case 2:
+      if fieldTypeId == thrift.STRUCT {
+        if err := p.ReadField2(ctx, iprot); err != nil {
+          return err
+        }
+      } else {
+        if err := iprot.Skip(ctx, fieldTypeId); err != nil {
+          return err
+        }
+      }
+    case 3:
+      if fieldTypeId == thrift.STRUCT {
+        if err := p.ReadField3(ctx, iprot); err != nil {
+          return err
+        }
+      } else {
+        if err := iprot.Skip(ctx, fieldTypeId); err != nil {
+          return err
+        }
+      }
+    case 4:
+      if fieldTypeId == thrift.STRUCT {
+        if err := p.ReadField4(ctx, iprot); err != nil {
+          return err
+        }
+      } else {
+        if err := iprot.Skip(ctx, fieldTypeId); err != nil {
+          return err
+        }
+      }
+    default:
+      if err := iprot.Skip(ctx, fieldTypeId); err != nil {
+        return err
+      }
+    }
+    if err := iprot.ReadFieldEnd(ctx); err != nil {
+      return err
+    }
+  }
+  if err := iprot.ReadStructEnd(ctx); err != nil {
+    return thrift.PrependError(fmt.Sprintf("%T read struct end error: ", p), err)
+  }
+  if !issetStrategyType{
+    return thrift.NewTProtocolExceptionWithType(thrift.INVALID_DATA, fmt.Errorf("Required field StrategyType is not set"));
+  }
+  return nil
+}
+
+func (p *SamplingStrategyResponse)  ReadField1(ctx context.Context, iprot thrift.TProtocol) error {
+  if v, err := iprot.ReadI32(ctx); err != nil {
+  return thrift.PrependError("error reading field 1: ", err)
+} else {
+  temp := SamplingStrategyType(v)
+  p.StrategyType = temp
+}
+  return nil
+}
+
+func (p *SamplingStrategyResponse)  ReadField2(ctx context.Context, iprot thrift.TProtocol) error {
+  p.ProbabilisticSampling = &ProbabilisticSamplingStrategy{}
+  if err := p.ProbabilisticSampling.Read(ctx, iprot); err != nil {
+    return thrift.PrependError(fmt.Sprintf("%T error reading struct: ", p.ProbabilisticSampling), err)
+  }
+  return nil
+}
+
+func (p *SamplingStrategyResponse)  ReadField3(ctx context.Context, iprot thrift.TProtocol) error {
+  p.RateLimitingSampling = &RateLimitingSamplingStrategy{}
+  if err := p.RateLimitingSampling.Read(ctx, iprot); err != nil {
+    return thrift.PrependError(fmt.Sprintf("%T error reading struct: ", p.RateLimitingSampling), err)
+  }
+  return nil
+}
+
+func (p *SamplingStrategyResponse)  ReadField4(ctx context.Context, iprot thrift.TProtocol) error {
+  p.OperationSampling = &PerOperationSamplingStrategies{}
+  if err := p.OperationSampling.Read(ctx, iprot); err != nil {
+    return thrift.PrependError(fmt.Sprintf("%T error reading struct: ", p.OperationSampling), err)
+  }
+  return nil
+}
+
+func (p *SamplingStrategyResponse) Write(ctx context.Context, oprot thrift.TProtocol) error {
+  if err := oprot.WriteStructBegin(ctx, "SamplingStrategyResponse"); err != nil {
+    return thrift.PrependError(fmt.Sprintf("%T write struct begin error: ", p), err) }
+  if p != nil {
+    if err := p.writeField1(ctx, oprot); err != nil { return err }
+    if err := p.writeField2(ctx, oprot); err != nil { return err }
+    if err := p.writeField3(ctx, oprot); err != nil { return err }
+    if err := p.writeField4(ctx, oprot); err != nil { return err }
+  }
+  if err := oprot.WriteFieldStop(ctx); err != nil {
+    return thrift.PrependError("write field stop error: ", err) }
+  if err := oprot.WriteStructEnd(ctx); err != nil {
+    return thrift.PrependError("write struct stop error: ", err) }
+  return nil
+}
+
+func (p *SamplingStrategyResponse) writeField1(ctx context.Context, oprot thrift.TProtocol) (err error) {
+  if err := oprot.WriteFieldBegin(ctx, "strategyType", thrift.I32, 1); err != nil {
+    return thrift.PrependError(fmt.Sprintf("%T write field begin error 1:strategyType: ", p), err) }
+  if err := oprot.WriteI32(ctx, int32(p.StrategyType)); err != nil {
+  return thrift.PrependError(fmt.Sprintf("%T.strategyType (1) field write error: ", p), err) }
+  if err := oprot.WriteFieldEnd(ctx); err != nil {
+    return thrift.PrependError(fmt.Sprintf("%T write field end error 1:strategyType: ", p), err) }
+  return err
+}
+
+func (p *SamplingStrategyResponse) writeField2(ctx context.Context, oprot thrift.TProtocol) (err error) {
+  if p.IsSetProbabilisticSampling() {
+    if err := oprot.WriteFieldBegin(ctx, "probabilisticSampling", thrift.STRUCT, 2); err != nil {
+      return thrift.PrependError(fmt.Sprintf("%T write field begin error 2:probabilisticSampling: ", p), err) }
+    if err := p.ProbabilisticSampling.Write(ctx, oprot); err != nil {
+      return thrift.PrependError(fmt.Sprintf("%T error writing struct: ", p.ProbabilisticSampling), err)
+    }
+    if err := oprot.WriteFieldEnd(ctx); err != nil {
+      return thrift.PrependError(fmt.Sprintf("%T write field end error 2:probabilisticSampling: ", p), err) }
+  }
+  return err
+}
+
+func (p *SamplingStrategyResponse) writeField3(ctx context.Context, oprot thrift.TProtocol) (err error) {
+  if p.IsSetRateLimitingSampling() {
+    if err := oprot.WriteFieldBegin(ctx, "rateLimitingSampling", thrift.STRUCT, 3); err != nil {
+      return thrift.PrependError(fmt.Sprintf("%T write field begin error 3:rateLimitingSampling: ", p), err) }
+    if err := p.RateLimitingSampling.Write(ctx, oprot); err != nil {
+      return thrift.PrependError(fmt.Sprintf("%T error writing struct: ", p.RateLimitingSampling), err)
+    }
+    if err := oprot.WriteFieldEnd(ctx); err != nil {
+      return thrift.PrependError(fmt.Sprintf("%T write field end error 3:rateLimitingSampling: ", p), err) }
+  }
+  return err
+}
+
+func (p *SamplingStrategyResponse) writeField4(ctx context.Context, oprot thrift.TProtocol) (err error) {
+  if p.IsSetOperationSampling() {
+    if err := oprot.WriteFieldBegin(ctx, "operationSampling", thrift.STRUCT, 4); err != nil {
+      return thrift.PrependError(fmt.Sprintf("%T write field begin error 4:operationSampling: ", p), err) }
+    if err := p.OperationSampling.Write(ctx, oprot); err != nil {
+      return thrift.PrependError(fmt.Sprintf("%T error writing struct: ", p.OperationSampling), err)
+    }
+    if err := oprot.WriteFieldEnd(ctx); err != nil {
+      return thrift.PrependError(fmt.Sprintf("%T write field end error 4:operationSampling: ", p), err) }
+  }
+  return err
+}
+
+func (p *SamplingStrategyResponse) Equals(other *SamplingStrategyResponse) bool {
+  if p == other {
+    return true
+  } else if p == nil || other == nil {
+    return false
+  }
+  if p.StrategyType != other.StrategyType { return false }
+  if !p.ProbabilisticSampling.Equals(other.ProbabilisticSampling) { return false }
+  if !p.RateLimitingSampling.Equals(other.RateLimitingSampling) { return false }
+  if !p.OperationSampling.Equals(other.OperationSampling) { return false }
+  return true
+}
+
+func (p *SamplingStrategyResponse) String() string {
+  if p == nil {
+    return "<nil>"
+  }
+  return fmt.Sprintf("SamplingStrategyResponse(%+v)", *p)
+}
+
+type SamplingManager interface {
+  // Parameters:
+  //  - ServiceName
+  GetSamplingStrategy(ctx context.Context, serviceName string) (_r *SamplingStrategyResponse, _err error)
+}
+
+type SamplingManagerClient struct {
+  c thrift.TClient
+  meta thrift.ResponseMeta
+}
+
+func NewSamplingManagerClientFactory(t thrift.TTransport, f thrift.TProtocolFactory) *SamplingManagerClient {
+  return &SamplingManagerClient{
+    c: thrift.NewTStandardClient(f.GetProtocol(t), f.GetProtocol(t)),
+  }
+}
+
+func NewSamplingManagerClientProtocol(t thrift.TTransport, iprot thrift.TProtocol, oprot thrift.TProtocol) *SamplingManagerClient {
+  return &SamplingManagerClient{
+    c: thrift.NewTStandardClient(iprot, oprot),
+  }
+}
+
+func NewSamplingManagerClient(c thrift.TClient) *SamplingManagerClient {
+  return &SamplingManagerClient{
+    c: c,
+  }
+}
+
+func (p *SamplingManagerClient) Client_() thrift.TClient {
+  return p.c
+}
+
+func (p *SamplingManagerClient) LastResponseMeta_() thrift.ResponseMeta {
+  return p.meta
+}
+
+func (p *SamplingManagerClient) SetLastResponseMeta_(meta thrift.ResponseMeta) {
+  p.meta = meta
+}
+
+// Parameters:
+//  - ServiceName
+func (p *SamplingManagerClient) GetSamplingStrategy(ctx context.Context, serviceName string) (_r *SamplingStrategyResponse, _err error) {
+  var _args2 SamplingManagerGetSamplingStrategyArgs
+  _args2.ServiceName = serviceName
+  var _result4 SamplingManagerGetSamplingStrategyResult
+  var _meta3 thrift.ResponseMeta
+  _meta3, _err = p.Client_().Call(ctx, "getSamplingStrategy", &_args2, &_result4)
+  p.SetLastResponseMeta_(_meta3)
+  if _err != nil {
+    return
+  }
+  return _result4.GetSuccess(), nil
+}
+
+type SamplingManagerProcessor struct {
+  processorMap map[string]thrift.TProcessorFunction
+  handler SamplingManager
+}
+
+func (p *SamplingManagerProcessor) AddToProcessorMap(key string, processor thrift.TProcessorFunction) {
+  p.processorMap[key] = processor
+}
+
+func (p *SamplingManagerProcessor) GetProcessorFunction(key string) (processor thrift.TProcessorFunction, ok bool) {
+  processor, ok = p.processorMap[key]
+  return processor, ok
+}
+
+func (p *SamplingManagerProcessor) ProcessorMap() map[string]thrift.TProcessorFunction {
+  return p.processorMap
+}
+
+func NewSamplingManagerProcessor(handler SamplingManager) *SamplingManagerProcessor {
+
+  self5 := &SamplingManagerProcessor{handler:handler, processorMap:make(map[string]thrift.TProcessorFunction)}
+  self5.processorMap["getSamplingStrategy"] = &samplingManagerProcessorGetSamplingStrategy{handler:handler}
+return self5
+}
+
+func (p *SamplingManagerProcessor) Process(ctx context.Context, iprot, oprot thrift.TProtocol) (success bool, err thrift.TException) {
+  name, _, seqId, err2 := iprot.ReadMessageBegin(ctx)
+  if err2 != nil { return false, thrift.WrapTException(err2) }
+  if processor, ok := p.GetProcessorFunction(name); ok {
+    return processor.Process(ctx, seqId, iprot, oprot)
+  }
+  iprot.Skip(ctx, thrift.STRUCT)
+  iprot.ReadMessageEnd(ctx)
+  x6 := thrift.NewTApplicationException(thrift.UNKNOWN_METHOD, "Unknown function " + name)
+  oprot.WriteMessageBegin(ctx, name, thrift.EXCEPTION, seqId)
+  x6.Write(ctx, oprot)
+  oprot.WriteMessageEnd(ctx)
+  oprot.Flush(ctx)
+  return false, x6
+
+}
+
+type samplingManagerProcessorGetSamplingStrategy struct {
+  handler SamplingManager
+}
+
+func (p *samplingManagerProcessorGetSamplingStrategy) Process(ctx context.Context, seqId int32, iprot, oprot thrift.TProtocol) (success bool, err thrift.TException) {
+  args := SamplingManagerGetSamplingStrategyArgs{}
+  var err2 error
+  if err2 = args.Read(ctx, iprot); err2 != nil {
+    iprot.ReadMessageEnd(ctx)
+    x := thrift.NewTApplicationException(thrift.PROTOCOL_ERROR, err2.Error())
+    oprot.WriteMessageBegin(ctx, "getSamplingStrategy", thrift.EXCEPTION, seqId)
+    x.Write(ctx, oprot)
+    oprot.WriteMessageEnd(ctx)
+    oprot.Flush(ctx)
+    return false, thrift.WrapTException(err2)
+  }
+  iprot.ReadMessageEnd(ctx)
+
+  tickerCancel := func() {}
+  // Start a goroutine to do server side connectivity check.
+  if thrift.ServerConnectivityCheckInterval > 0 {
+    var cancel context.CancelFunc
+    ctx, cancel = context.WithCancel(ctx)
+    defer cancel()
+    var tickerCtx context.Context
+    tickerCtx, tickerCancel = context.WithCancel(context.Background())
+    defer tickerCancel()
+    go func(ctx context.Context, cancel context.CancelFunc) {
+      ticker := time.NewTicker(thrift.ServerConnectivityCheckInterval)
+      defer ticker.Stop()
+      for {
+        select {
+        case <-ctx.Done():
+          return
+        case <-ticker.C:
+          if !iprot.Transport().IsOpen() {
+            cancel()
+            return
+          }
+        }
+      }
+    }(tickerCtx, cancel)
+  }
+
+  result := SamplingManagerGetSamplingStrategyResult{}
+  var retval *SamplingStrategyResponse
+  if retval, err2 = p.handler.GetSamplingStrategy(ctx, args.ServiceName); err2 != nil {
+    tickerCancel()
+    if err2 == thrift.ErrAbandonRequest {
+      return false, thrift.WrapTException(err2)
+    }
+    x := thrift.NewTApplicationException(thrift.INTERNAL_ERROR, "Internal error processing getSamplingStrategy: " + err2.Error())
+    oprot.WriteMessageBegin(ctx, "getSamplingStrategy", thrift.EXCEPTION, seqId)
+    x.Write(ctx, oprot)
+    oprot.WriteMessageEnd(ctx)
+    oprot.Flush(ctx)
+    return true, thrift.WrapTException(err2)
+  } else {
+    result.Success = retval
+  }
+  tickerCancel()
+  if err2 = oprot.WriteMessageBegin(ctx, "getSamplingStrategy", thrift.REPLY, seqId); err2 != nil {
+    err = thrift.WrapTException(err2)
+  }
+  if err2 = result.Write(ctx, oprot); err == nil && err2 != nil {
+    err = thrift.WrapTException(err2)
+  }
+  if err2 = oprot.WriteMessageEnd(ctx); err == nil && err2 != nil {
+    err = thrift.WrapTException(err2)
+  }
+  if err2 = oprot.Flush(ctx); err == nil && err2 != nil {
+    err = thrift.WrapTException(err2)
+  }
+  if err != nil {
+    return
+  }
+  return true, err
+}
+
+
+// HELPER FUNCTIONS AND STRUCTURES
+
+// Attributes:
+//  - ServiceName
+type SamplingManagerGetSamplingStrategyArgs struct {
+  ServiceName string `thrift:"serviceName,1" db:"serviceName" json:"serviceName"`
+}
+
+func NewSamplingManagerGetSamplingStrategyArgs() *SamplingManagerGetSamplingStrategyArgs {
+  return &SamplingManagerGetSamplingStrategyArgs{}
+}
+
+
+func (p *SamplingManagerGetSamplingStrategyArgs) GetServiceName() string {
+  return p.ServiceName
+}
+func (p *SamplingManagerGetSamplingStrategyArgs) Read(ctx context.Context, iprot thrift.TProtocol) error {
+  if _, err := iprot.ReadStructBegin(ctx); err != nil {
+    return thrift.PrependError(fmt.Sprintf("%T read error: ", p), err)
+  }
+
+
+  for {
+    _, fieldTypeId, fieldId, err := iprot.ReadFieldBegin(ctx)
+    if err != nil {
+      return thrift.PrependError(fmt.Sprintf("%T field %d read error: ", p, fieldId), err)
+    }
+    if fieldTypeId == thrift.STOP { break; }
+    switch fieldId {
+    case 1:
+      if fieldTypeId == thrift.STRING {
+        if err := p.ReadField1(ctx, iprot); err != nil {
+          return err
+        }
+      } else {
+        if err := iprot.Skip(ctx, fieldTypeId); err != nil {
+          return err
+        }
+      }
+    default:
+      if err := iprot.Skip(ctx, fieldTypeId); err != nil {
+        return err
+      }
+    }
+    if err := iprot.ReadFieldEnd(ctx); err != nil {
+      return err
+    }
+  }
+  if err := iprot.ReadStructEnd(ctx); err != nil {
+    return thrift.PrependError(fmt.Sprintf("%T read struct end error: ", p), err)
+  }
+  return nil
+}
+
+func (p *SamplingManagerGetSamplingStrategyArgs)  ReadField1(ctx context.Context, iprot thrift.TProtocol) error {
+  if v, err := iprot.ReadString(ctx); err != nil {
+  return thrift.PrependError("error reading field 1: ", err)
+} else {
+  p.ServiceName = v
+}
+  return nil
+}
+
+func (p *SamplingManagerGetSamplingStrategyArgs) Write(ctx context.Context, oprot thrift.TProtocol) error {
+  if err := oprot.WriteStructBegin(ctx, "getSamplingStrategy_args"); err != nil {
+    return thrift.PrependError(fmt.Sprintf("%T write struct begin error: ", p), err) }
+  if p != nil {
+    if err := p.writeField1(ctx, oprot); err != nil { return err }
+  }
+  if err := oprot.WriteFieldStop(ctx); err != nil {
+    return thrift.PrependError("write field stop error: ", err) }
+  if err := oprot.WriteStructEnd(ctx); err != nil {
+    return thrift.PrependError("write struct stop error: ", err) }
+  return nil
+}
+
+func (p *SamplingManagerGetSamplingStrategyArgs) writeField1(ctx context.Context, oprot thrift.TProtocol) (err error) {
+  if err := oprot.WriteFieldBegin(ctx, "serviceName", thrift.STRING, 1); err != nil {
+    return thrift.PrependError(fmt.Sprintf("%T write field begin error 1:serviceName: ", p), err) }
+  if err := oprot.WriteString(ctx, string(p.ServiceName)); err != nil {
+  return thrift.PrependError(fmt.Sprintf("%T.serviceName (1) field write error: ", p), err) }
+  if err := oprot.WriteFieldEnd(ctx); err != nil {
+    return thrift.PrependError(fmt.Sprintf("%T write field end error 1:serviceName: ", p), err) }
+  return err
+}
+
+func (p *SamplingManagerGetSamplingStrategyArgs) String() string {
+  if p == nil {
+    return "<nil>"
+  }
+  return fmt.Sprintf("SamplingManagerGetSamplingStrategyArgs(%+v)", *p)
+}
+
+// Attributes:
+//  - Success
+type SamplingManagerGetSamplingStrategyResult struct {
+  Success *SamplingStrategyResponse `thrift:"success,0" db:"success" json:"success,omitempty"`
+}
+
+func NewSamplingManagerGetSamplingStrategyResult() *SamplingManagerGetSamplingStrategyResult {
+  return &SamplingManagerGetSamplingStrategyResult{}
+}
+
+var SamplingManagerGetSamplingStrategyResult_Success_DEFAULT *SamplingStrategyResponse
+func (p *SamplingManagerGetSamplingStrategyResult) GetSuccess() *SamplingStrategyResponse {
+  if !p.IsSetSuccess() {
+    return SamplingManagerGetSamplingStrategyResult_Success_DEFAULT
+  }
+return p.Success
+}
+func (p *SamplingManagerGetSamplingStrategyResult) IsSetSuccess() bool {
+  return p.Success != nil
+}
+
+func (p *SamplingManagerGetSamplingStrategyResult) Read(ctx context.Context, iprot thrift.TProtocol) error {
+  if _, err := iprot.ReadStructBegin(ctx); err != nil {
+    return thrift.PrependError(fmt.Sprintf("%T read error: ", p), err)
+  }
+
+
+  for {
+    _, fieldTypeId, fieldId, err := iprot.ReadFieldBegin(ctx)
+    if err != nil {
+      return thrift.PrependError(fmt.Sprintf("%T field %d read error: ", p, fieldId), err)
+    }
+    if fieldTypeId == thrift.STOP { break; }
+    switch fieldId {
+    case 0:
+      if fieldTypeId == thrift.STRUCT {
+        if err := p.ReadField0(ctx, iprot); err != nil {
+          return err
+        }
+      } else {
+        if err := iprot.Skip(ctx, fieldTypeId); err != nil {
+          return err
+        }
+      }
+    default:
+      if err := iprot.Skip(ctx, fieldTypeId); err != nil {
+        return err
+      }
+    }
+    if err := iprot.ReadFieldEnd(ctx); err != nil {
+      return err
+    }
+  }
+  if err := iprot.ReadStructEnd(ctx); err != nil {
+    return thrift.PrependError(fmt.Sprintf("%T read struct end error: ", p), err)
+  }
+  return nil
+}
+
+func (p *SamplingManagerGetSamplingStrategyResult)  ReadField0(ctx context.Context, iprot thrift.TProtocol) error {
+  p.Success = &SamplingStrategyResponse{}
+  if err := p.Success.Read(ctx, iprot); err != nil {
+    return thrift.PrependError(fmt.Sprintf("%T error reading struct: ", p.Success), err)
+  }
+  return nil
+}
+
+func (p *SamplingManagerGetSamplingStrategyResult) Write(ctx context.Context, oprot thrift.TProtocol) error {
+  if err := oprot.WriteStructBegin(ctx, "getSamplingStrategy_result"); err != nil {
+    return thrift.PrependError(fmt.Sprintf("%T write struct begin error: ", p), err) }
+  if p != nil {
+    if err := p.writeField0(ctx, oprot); err != nil { return err }
+  }
+  if err := oprot.WriteFieldStop(ctx); err != nil {
+    return thrift.PrependError("write field stop error: ", err) }
+  if err := oprot.WriteStructEnd(ctx); err != nil {
+    return thrift.PrependError("write struct stop error: ", err) }
+  return nil
+}
+
+func (p *SamplingManagerGetSamplingStrategyResult) writeField0(ctx context.Context, oprot thrift.TProtocol) (err error) {
+  if p.IsSetSuccess() {
+    if err := oprot.WriteFieldBegin(ctx, "success", thrift.STRUCT, 0); err != nil {
+      return thrift.PrependError(fmt.Sprintf("%T write field begin error 0:success: ", p), err) }
+    if err := p.Success.Write(ctx, oprot); err != nil {
+      return thrift.PrependError(fmt.Sprintf("%T error writing struct: ", p.Success), err)
+    }
+    if err := oprot.WriteFieldEnd(ctx); err != nil {
+      return thrift.PrependError(fmt.Sprintf("%T write field end error 0:success: ", p), err) }
+  }
+  return err
+}
+
+func (p *SamplingManagerGetSamplingStrategyResult) String() string {
+  if p == nil {
+    return "<nil>"
+  }
+  return fmt.Sprintf("SamplingManagerGetSamplingStrategyResult(%+v)", *p)
+}
+
+