LogDog: Handle archive failures.

common/api/logdog_coordinator/services/v1/service.pb.go

 // Code generated by protoc-gen-go.
 // source: service.proto
 // DO NOT EDIT!
 
 /*
 Package logdog is a generated protocol buffer package.
 
 It is generated from these files:
         service.proto
         state.proto
@@ skipping 155 matching lines @@
 // ArchiveStreamRequest is the set of caller-supplied data for the ArchiveStream
 // service endpoint.
 type ArchiveStreamRequest struct {
         // The path of the log stream that was archived.
         Path string `protobuf:"bytes,1,opt,name=path" json:"path,omitempty"`
         // If true, the archive includes the full set of log stream entries between
         // [0..terminal_index].
         Complete bool `protobuf:"varint,2,opt,name=complete" json:"complete,omitempty"`
         // The highest log stream index that was archived.
         TerminalIndex int64 `protobuf:"varint,3,opt,name=terminal_index" json:"terminal_index,omitempty"`
+        // If true, there was an archival error, and the referenced streams should be
+        // considered invalid.
+        Error bool `protobuf:"varint,4,opt,name=error" json:"error,omitempty"`
         // The archive URL of the log stream's stream data.
         StreamUrl string `protobuf:"bytes,10,opt,name=stream_url" json:"stream_url,omitempty"`
         // The size of the log stream's stream data.
         StreamSize int64 `protobuf:"varint,11,opt,name=stream_size" json:"stream_size,omitempty"`
         // The archive URL of the log stream's index data.
         IndexUrl string `protobuf:"bytes,20,opt,name=index_url" json:"index_url,omitempty"`
         // The size of the log stream's index data.
         IndexSize int64 `protobuf:"varint,21,opt,name=index_size" json:"index_size,omitempty"`
         // The archive URL of the log stream's binary data.
         DataUrl string `protobuf:"bytes,30,opt,name=data_url" json:"data_url,omitempty"`
@@ skipping 253 matching lines @@
                 },
                 {
                         MethodName: "ArchiveStream",
                         Handler:    _Services_ArchiveStream_Handler,
                 },
         },
         Streams: []grpc.StreamDesc{},
 }
 
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