add snapshot_request.go

snapshot_request.go

@@ -0,0 +1,41 @@
+package raft
+
+// The request sent to a server to start from the snapshot.
+type SnapshotRequest struct {
+	LeaderName   string      `json:"leaderName"`
+	LastIndex    uint64 	 `json:"lastTerm"`
+	LastTerm	 uint64		 `json:"lastIndex"`
+	MachineState int 		 `json:"machineState"`
+}
+
+// The response returned from a server appending entries to the log.
+type SnapshotResponse struct {
+	Term        uint64 `json:"term"`
+	Success     bool   `json:"success"`
+	CommitIndex uint64 `json:"commitIndex"`
+}
+
+//------------------------------------------------------------------------------
+//
+// Constructors
+//
+//------------------------------------------------------------------------------
+
+// Creates a new Snapshot request.
+func NewSnapshotRequest(leaderName string, snapshot *Snapshot) *SnapshotRequest {
+	return &SnapshotRequest{
+		LeaderName:   leaderName,
+		LastIndex:    snapshot.lastIndex,
+		LastTerm:	  snapshot.lastTerm,
+		MachineState: snapshot.machineState,
+	}
+}
+
+// Creates a new Snapshot response.
+func NewSnapshotResponse(term uint64, success bool, commitIndex uint64) *SnapshotResponse {
+	return &SnapshotResponse{
+		Term:        term,
+		Success:     success,
+		CommitIndex: commitIndex,
+	}
+}