// Copyright (c) HashiCorp, Inc.
// SPDX-License-Identifier: BUSL-1.1

syntax = "proto3";

package controller.servers.services.v1;

import "controller/api/resources/targets/v1/target.proto";
import "controller/servers/services/v1/credential.proto";
import "controller/servers/services/v1/server_coordination_service.proto";
import "google/protobuf/any.proto";
import "google/protobuf/timestamp.proto";

option go_package = "github.com/hashicorp/boundary/internal/gen/controller/servers/services;services";

service SessionService {
  // LookupSession allows a worker to retrieve session information from the
  // controller.
  rpc LookupSession(LookupSessionRequest) returns (LookupSessionResponse) {}

  // ActivateSession allows a worker to activate a session on a controller.
  rpc ActivateSession(ActivateSessionRequest) returns (ActivateSessionResponse) {}

  // CancelSession allows a worker to request that the controller cancel a session.
  rpc CancelSession(CancelSessionRequest) returns (CancelSessionResponse) {}

  // AuthorizeConnection allows a worker to authorize a connection on a controller.
  rpc AuthorizeConnection(AuthorizeConnectionRequest) returns (AuthorizeConnectionResponse) {}

  // ConnectConnection updates a connection to set it to connected
  rpc ConnectConnection(ConnectConnectionRequest) returns (ConnectConnectionResponse) {}

  // CloseConnections updates a connection to set it to closed
  rpc CloseConnection(CloseConnectionRequest) returns (CloseConnectionResponse) {}
}

message LookupSessionRequest {
  // The session ID from the client
  string session_id = 10; // @gotags: `class:"public" eventstream:"observation"`
  // The id of the requesting worker, used for filtering to ensure this worker
  // can handle this session
  string worker_id = 20; // @gotags: `class:"public" eventstream:"observation"`
}

// LookupSessionResponse contains information necessary for a client to
// establish a session.
message LookupSessionResponse {
  api.resources.targets.v1.SessionAuthorizationData authorization = 10;
  string tofu_token = 20; // @gotags: `class:"secret"`
  uint32 version = 30; // @gotags: `class:"public"`
  string endpoint = 40; // @gotags: `class:"public"`
  google.protobuf.Timestamp expiration = 50; // @gotags: `class:"public" eventstream:"observation"`
  controller.servers.services.v1.SESSIONSTATUS status = 60; // @gotags: `class:"public" eventstream:"observation"`
  int32 connection_limit = 70; // @gotags: `class:"public"`
  int32 connections_left = 80; // @gotags: `class:"public"`
  string host_id = 90; // @gotags: `class:"public" eventstream:"observation"`
  string host_set_id = 100; // @gotags: `class:"public" eventstream:"observation"`
  string target_id = 110; // @gotags: `class:"public" eventstream:"observation"`
  string user_id = 120; // @gotags: `class:"public" eventstream:"observation"`

  // credentials is deprecated on this response message.  Instead use the
  // credentials field inside the ProtocolContext message.
  repeated Credential credentials = 130 [deprecated = true]; // @gotags: `class:"secret"`
  // pkcs8_host_keys is deprecated on this response message.
  repeated bytes pkcs8_host_keys = 140 [deprecated = true]; // @gotags: `class:"secret"`
}

message ActivateSessionRequest {
  reserved 40;
  reserved "worker_id";

  string session_id = 10; // @gotags: `class:"public" eventstream:"observation"`
  string tofu_token = 20; // @gotags: `class:"secret"`
  uint32 version = 30; // @gotags: `class:"public"`
  controller.servers.services.v1.SESSIONSTATUS status = 50; // @gotags: `class:"public" eventstream:"observation"`
}

message ActivateSessionResponse {
  controller.servers.services.v1.SESSIONSTATUS status = 10; // @gotags: `class:"public" eventstream:"observation"`
}

message CancelSessionRequest {
  string session_id = 10; // @gotags: `class:"public" eventstream:"observation"`
}

message CancelSessionResponse {
  controller.servers.services.v1.SESSIONSTATUS status = 10; // @gotags: `class:"public" eventstream:"observation"`
}

message AuthorizeConnectionRequest {
  string session_id = 10; // @gotags: `class:"public" eventstream:"observation"`
  string worker_id = 20; // @gotags: `class:"public" eventstream:"observation"`
}

message AuthorizeConnectionResponse {
  string connection_id = 10; // @gotags: `class:"public" eventstream:"observation"`
  controller.servers.services.v1.CONNECTIONSTATUS status = 20; // @gotags: `class:"public" eventstream:"observation"`
  int32 connections_left = 30; // @gotags: `class:"public"`

  // protocol_context contains information specific to the protocol being
  // proxied.  This is not needed to be set for tcp sessions.
  google.protobuf.Any protocol_context = 40; // @gotags: `class:"public"`

  // route specifies the workers the connection will be sent through
  repeated string route = 50;
}

message ConnectConnectionRequest {
  string connection_id = 10; // @gotags: `class:"public" eventstream:"observation"`
  string client_tcp_address = 20; // @gotags: `class:"public"`
  uint32 client_tcp_port = 30; // @gotags: `class:"public"`
  string endpoint_tcp_address = 40; // @gotags: `class:"public"`
  uint32 endpoint_tcp_port = 50; // @gotags: `class:"public"`
  string type = 60; // @gotags: `class:"public" eventstream:"observation"`

  // user_client_ip is the user's client ip for the connection as determined by
  // the inbound http request handler
  string user_client_ip = 70; // @gotags: `class:"public"
}

message ConnectConnectionResponse {
  controller.servers.services.v1.CONNECTIONSTATUS status = 10; // @gotags: `class:"public" eventstream:"observation"`
}

message CloseConnectionRequestData {
  string connection_id = 10; // @gotags: `class:"public" eventstream:"observation"`
  int64 bytes_up = 20; // @gotags: `class:"public"`
  int64 bytes_down = 30; // @gotags: `class:"public"`
  string reason = 40; // @gotags: `class:"public" eventstream:"observation"`
}

message CloseConnectionRequest {
  repeated CloseConnectionRequestData close_request_data = 10; // @gotags: `class:"public" eventstream:"observation"`
}

message CloseConnectionResponseData {
  string connection_id = 10;
  controller.servers.services.v1.CONNECTIONSTATUS status = 20; // @gotags: `class:"public" eventstream:"observation"`
}

message CloseConnectionResponse {
  repeated CloseConnectionResponseData close_response_data = 10; // @gotags: `class:"public" eventstream:"observation"`
}