// Copyright (C) 2018 Storj Labs, Inc.
// See LICENSE for copying information.

syntax = "proto3";
package statdb;

// StatDB defines the interface for retrieving and updating storagenode stats
service StatDB {
  // Create a db entry for the provided storagenode ID
  rpc Create(CreateRequest) returns (CreateResponse);
  // Get uses a storagenode ID to get that storagenode's stats
  rpc Get(GetRequest) returns (GetResponse);
  // FindValidNodes gets a subset of storagenodes that fit minimum reputation args
  rpc FindValidNodes(FindValidNodesRequest) returns (FindValidNodesResponse);
  // Update updates storagenode stats for a single storagenode
  rpc Update(UpdateRequest) returns (UpdateResponse);
  // UpdateBatch updates storagenode stats for multiple farmers at a time
  rpc UpdateBatch(UpdateBatchRequest) returns (UpdateBatchResponse);
  // CreateEntryIfNotExists creates a db entry if it didn't exist
  rpc CreateEntryIfNotExists(CreateEntryIfNotExistsRequest) returns (CreateEntryIfNotExistsResponse);
}

// Node is info for a updating a single storagenode, used in the Update rpc calls
message Node {
  bytes node_id = 1;
  repeated int64 latency_list = 2;
  bool audit_success = 3;
  bool is_up = 4;
  bool update_latency = 5;
  bool update_audit_success = 6;
  bool update_uptime = 7;
}

// NodeStats is info about a single storagenode stored in the stats db
message NodeStats {
  bytes node_id = 1;
  int64 latency_90 = 2; // 90th percentile measure of storagenode latency
  double audit_success_ratio = 3; // (auditSuccessCount / totalAuditCount)
  double uptime_ratio = 4; // (uptimeCount / totalUptimeCheckCount)
  int64 audit_count = 5;
  int64 audit_success_count = 6;
  int64 uptime_count = 7;
  int64 uptime_success_count = 8;
}

// CreateRequest is a request message for the Create rpc call
message CreateRequest {
  Node node = 1;
  NodeStats stats = 2;
  bytes APIKey = 3;
}

// CreateResponse is a response message for the Create rpc call
message CreateResponse {
  NodeStats stats = 1;
}

// GetRequest is a request message for the Get rpc call
message GetRequest {
  bytes node_id = 1;
  bytes APIKey = 2;
}

// GetResponse is a response message for the Get rpc call
message GetResponse {
  NodeStats stats = 1;
}

// FindValidNodesRequest is a request message for the FindValidNodes rpc call
message FindValidNodesRequest {
  repeated bytes node_ids = 1;
  NodeStats min_stats = 2;
  bytes APIKey = 3;
}

// FindValidNodesResponse is a response message for the FindValidNodes rpc call
message FindValidNodesResponse {
  repeated bytes passed_ids = 1;
  repeated bytes failed_ids = 2;
}

// UpdateRequest is a request message for the Update rpc call
message UpdateRequest {
  Node node = 1;
  bytes APIKey = 2;
}

// UpdateRequest is a response message for the Update rpc call
message UpdateResponse {
  NodeStats stats = 1;
}

// UpdateBatchRequest is a request message for the UpdateBatch rpc call
message UpdateBatchRequest {
  repeated Node node_list = 1;
  bytes APIKey = 2;
}

// UpdateBatchResponse is a response message for the UpdateBatch rpc call
message UpdateBatchResponse {
  repeated NodeStats stats_list = 1;
  repeated Node failed_nodes = 2;
}

// CreateEntryIfNotExistsRequest is a request message for the CreateEntryIfNotExists rpc call
message CreateEntryIfNotExistsRequest {
  Node node = 1;
  bytes APIKey = 2;
}

// CreateEntryIfNotExistsResponse is a response message for the CreateEntryIfNotExists rpc call
message CreateEntryIfNotExistsResponse  {
  NodeStats stats = 1;
}