LogDog: Add collector service implementation.

common/proto/logdog/services/config.pb.go

 // Code generated by protoc-gen-go.
 // source: config.proto
 // DO NOT EDIT!
 
 /*
 Package services is a generated protocol buffer package.
 
 It is generated from these files:
         config.proto
         storage.proto
         transport.proto
 
 It has these top-level messages:
         Config
         Coordinator
         Collector
         Storage
         Transport
 */
 package services
 
 import proto "github.com/golang/protobuf/proto"
 import fmt "fmt"
 import math "math"
+import google_protobuf "github.com/luci/luci-go/common/proto/google"
 
 // Reference imports to suppress errors if they are not otherwise used.
 var _ = proto.Marshal
 var _ = fmt.Errorf
 var _ = math.Inf
 
 // Config is the overall instance configuration.
 type Config struct {
         // Configuration for the Pub/Sub instances.
         Transport *Transport `protobuf:"bytes,10,opt,name=transport" json:"transport,omitempty"`
@@ skipping 53 matching lines @@
 func (m *Coordinator) String() string            { return proto.CompactTextString(m) }
 func (*Coordinator) ProtoMessage()               {}
 func (*Coordinator) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{1} }
 
 // Collector is the set of configuration parameters for Collector instances.
 type Collector struct {
         // Workers is the number of ingest workers to run.
         Workers int32 `protobuf:"varint,1,opt,name=workers" json:"workers,omitempty"`
         // The number of transport worker goroutines to run.
         TransportWorkers int32 `protobuf:"varint,2,opt,name=transport_workers" json:"transport_workers,omitempty"`
+        // The maximum amount of time that cached stream state is valid.
+        StateCacheExpiration *google_protobuf.Duration `protobuf:"bytes,3,opt,name=state_cache_expiration" json:"state_cache_expiration,omitempty"`
 }
 
 func (m *Collector) Reset()                    { *m = Collector{} }
 func (m *Collector) String() string            { return proto.CompactTextString(m) }
 func (*Collector) ProtoMessage()               {}
 func (*Collector) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{2} }
 
+func (m *Collector) GetStateCacheExpiration() *google_protobuf.Duration {
+        if m != nil {
+                return m.StateCacheExpiration
+        }
+        return nil
+}
+
 func init() {
         proto.RegisterType((*Config)(nil), "services.Config")
         proto.RegisterType((*Coordinator)(nil), "services.Coordinator")
         proto.RegisterType((*Collector)(nil), "services.Collector")
 }
 
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 }