replica.proto

syntax = "proto3";


message GetKey {
  uint32 key = 1;
  uint32 from_client = 2; // 0:request from other replica server ; 1:req from client
  string consistency_level = 3;
  string from_rep = 4;    // for looking into hints
}

message PutKey {
  uint32 key = 1;
  string value = 2;
  uint32 from_client = 3; // 0:request from other replica server ; 1:req from client
  string timestamp = 4;  // set by co-ordinator only no other replicas
  string consistency_level = 5;
  string from_rep = 6;    // for looking into hints
}

message CordResponse{
  uint32 value_present = 1; // 0:No ; 1:Yes if value present with the given key
                            // 2: value present on less than 3 replicas. through error(client or replica????)
                            // consistency_level didn't match, so through error
  string value        = 2;
  uint32 ack          = 3;  // 0:nack through exception ; 1:ack use only with PutKey
}

message ReplicaResponse{
  uint32 is_updated = 1;    // 0:No ; 1:Yes for write request from replica only
  uint32 value_present = 2; // 0:No ; 1:Yes if value present with the given key for read
  string value = 3;
  string timestamp = 4;     // datetime object as a string
  string from_rep  = 5;     // for read repai list
}

message ReplicaMessage {
  oneof replica_message {
    GetKey get_key = 1;
    PutKey put_key = 2;
    CordResponse cord_response = 3;
    ReplicaResponse replica_response = 4;
  }
}