// Copyright 2021 The ChromiumOS Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

syntax = "proto3";

package chromiumos.test.api;

option go_package = "go.chromium.org/chromiumos/config/go/test/api";

import "chromiumos/config/api/test/xmlrpc/xmlrpc.proto";
import "chromiumos/longrunning/operations.proto";

// Provides the ability to start/stop servod daemon and execute servod
// commands on it.
// Servod daemon can be running either inside a Docker container or directly
// on the host.
// The servo host could also be the same as the service host or a remote host.
// go/cros-servod-design to learn more about the design.
service ServodService {
  // StartServod runs a servod Docker container and starts the servod daemon
  // inside the container if servod is containerized. Otherwise, it simply
  // starts the servod daemon.
  rpc StartServod(StartServodRequest) returns (longrunning.Operation) {
    option (longrunning.operation_info) = {
      response_type: "StartServodResponse",
      metadata_type: "StartServodMetadata"
    };
  }

  // StopServod stops the servod daemon inside the container and stops the
  // servod Docker container if servod is containerized. Otherwise, it simply
  // stops the servod daemon.
  rpc StopServod(StopServodRequest) returns (longrunning.Operation) {
    option (longrunning.operation_info) = {
      response_type: "StopServodResponse",
      metadata_type: "StopServodMetadata"
    };
  }

  // ExecCmd executes a system command that is provided through the command
  // parameter in the request. It allows the user to execute arbitrary commands
  // that can't be handled by calling servod (e.g. update firmware through
  // "futility", remote file copy through "scp").
  // It executes the command inside the servod Docker container if the
  // servod_docker_container_name parameter is provided in the request.
  // Otherwise, it executes the command directly inside the host that the servo
  // is physically connected to.
  rpc ExecCmd(ExecCmdRequest) returns (ExecCmdResponse);

  // CallServod runs a servod command through an XML-RPC call.
  // It runs the command inside the servod Docker container if the
  // servod_docker_container_name parameter is provided in the request.
  // Otherwise, it runs the command directly inside the host that the servo
  // is physically connected to.
  // Allowed methods: doc, get, set, and hwinit.
  rpc CallServod(CallServodRequest) returns (CallServodResponse);

  // LogCheckPoint will create checkpoint certain files so that some files
  // can be saved partially when SaveLogs is called.
  // For example, /var/log/messages in a labstation can be
  // very big and include information from a few days ago.
  // Getting the checkpoint of the current /var/log/messages will
  // allow SaveLogs to save the portion only relevant to the current
  // testing session.
  rpc LogCheckPoint(LogCheckPointRequest) returns (LogCheckPointResponse) {}

  // SaveLogs will save servod related logs on the host that this service
  // is running.
  // Logs include:
  //     /var/log/message from the servod host.
  //     /var/log/servod_<port>/ latest.DEBUG from servod host.
  //     /var/log/servod_<port>.STARTUP.log from servod host.
  //     The output of  "dmesg -H"  from the servod host.
  //     The extraction of the MCU console logs from latest.DEBUG
  rpc SaveLogs(SaveLogsRequest) returns (SaveLogsResponse) {}
}

message StartServodRequest {
  // The path (URI) for the servod (containerized or running as a daemon) host.
  // If cros-servod and docker-servod live on the same host, this parameter
  // should be empty.
  string servo_host_path = 1;

  // The servod Docker container name.
  string servod_docker_container_name = 2;

  // The servod Docker image path to pull from GCR.
  // Example: gcr.io/chromeos-bot/servod@sha256:2d25f6313c7bbac349607
  string servod_docker_image_path = 3;

  // The --PORT parameter value for servod command.
  int32 servod_port = 4;

  // The --BOARD parameter value for servod command.
  string board = 5;

  // The --MODEL parameter value for servod command.
  string model = 6;

  // The --SERIALNAME parameter value for servod command.
  string serial_name = 7;

  // The --DEBUG parameter value for servod command.
  string debug = 8;

  // The --RECOVERY_MODE parameter value for servod command.
  string recovery_mode = 9;

  // The --CONFIG parameter value for servod command.
  string config = 10;

  // The --ALLOW-DUAL-V4 parameter value for servod command.
  // Blank and "1" are the only legal values.
  string allow_dual_v4 = 11;
}

message StartServodResponse {
  // Empty response for success.
  message Success {}

  // Error message for failure.
  message Failure {
    string error_message = 1;
  }

  oneof result {
    Success success = 1;
    Failure failure = 2;
  }
}

message StartServodMetadata {}

message StopServodRequest {
  // The path (URI) for the servod (containerized or running as a daemon) host.
  // If cros-servod and docker-servod live on the same host, this parameter
  // should be empty.
  string servo_host_path = 1;

  // The servod Docker container name.
  string servod_docker_container_name = 2;

  // The port that servod is running on the servo host.
  int32 servod_port = 3;
}

message StopServodResponse {
  // Empty response for success.
  message Success {}

  // Error message for failure.
  message Failure {
    string error_message = 1;
  }

  oneof result {
    Success success = 1;
    Failure failure = 2;
  }
}

message StopServodMetadata {}

message ExecCmdRequest {
  // The path (URI) for the servod (containerized or running as a daemon) host.
  // If cros-servod and docker-servod live on the same host, this parameter
  // should be empty.
  string servo_host_path = 1;

  // The servod Docker container name.
  string servod_docker_container_name = 2;

  // The command to execute on the servo host.
  // Example (Flash firmware with the provided image):
  // "futility update -i <IMAGE> --servo_port=<PORT>"
  // Example (Copy a file from B to A while logged into B):
  // "scp /path/to/file username@A:/path/to/destination"
  string command = 3;

  // stdin is passed to the command as the program's stdin.
  // An empty bytes is not treated specially; if the command reads
  // from stdin, it will receive zero bytes.
  bytes stdin = 4;
}

message ExecCmdResponse {
  message ExitInfo {
    // status provides information about how the command process
    // terminated.
    //
    // If the command failed to start, status is set to an arbitrary
    // non-zero value.
    //
    // If signaled is set, status is set to the signal that caused
    // the command to terminate.
    //
    // Otherwise, status is set to the exit status of the process.
    // Exit statuses outside of 0 to 255 inclusive are not supported;
    // they will be mapped to an arbitrary non-zero value.
    //
    // status is zero if and only if the process was successfully
    // started and exited with a zero status.
    int32 status = 1;
    // signaled indicates whether the command exited due to a signal.
    // If set, status contains the signal.
    bool signaled = 2;
    // started indicates whether the command was started.
    bool started = 3;
    // error_message provides a human readable explanation for some errors.
    // This MUST NOT be inspected by programs.
    string error_message = 4;
  }
  // The exit information that is set when the command has exited
  // or failed to start.
  ExitInfo exit_info = 1;
  // The shell command's stdout output since the last response.
  bytes stdout = 2;
  // The shell command's stderr output since the last response.
  bytes stderr = 3;
}

message ExecCmdMetadata {}

message CallServodRequest {
  // The path (URI) for the servod (containerized or running as a daemon) host.
  // If cros-servod and docker-servod live on the same host, this parameter
  // should be empty.
  string servo_host_path = 1;

  // The servod Docker container name.
  string servod_docker_container_name = 2;

  // The port that servod is running on the servo host.
  int32 servod_port = 3;

  // The allowed methods to run.
  enum Method {
    // Shows info about control.
    DOC = 0;
    // Gets the value of control.
    GET = 1;
    // Sets the value of control.
    SET = 2;
    // Initializes all controls.
    HWINIT = 3;
  }

  // The method to run.
  Method method = 4;

  // The arguments to pass to the servod call.
  // For the doc and get methods, it will be control name as single
  // array value (e.g. ["lid_open"]).
  // For the set method, it will be control name and the value as
  // separate array values (e.g. ["lid_open", "yes"]).
  repeated chromiumos.config.api.test.xmlrpc.Value args = 5;
}

message CallServodResponse {
  // Response for success.
  message Success {
    chromiumos.config.api.test.xmlrpc.Value result = 1;
  }

  // Error message for failure.
  message Failure {
    string error_message = 1;
  }

  oneof result {
    Success success = 1;
    Failure failure = 2;
  }
}

message CallServodMetadata {}

message LogCheckPointRequest {
  // The path (URI) for the servod (containerized or running as a daemon) host.
  // If cros-servod and docker-servod live on the same host, this parameter
  // should be empty.
  string servo_host_path = 1;

  // The servod Docker container name.
  string servod_docker_container_name = 2;

  // The paths to the files that need checkpoint information.
  repeated string paths = 3;
}

message LogCheckPointResponse {
  // A mapping between the paths in the requests and their current
  // line numbers.
  // If a file does not exist on the host, it will not be included in
  // this map. There will be no errors.
  map<string, int32> path_to_line_number = 1;
}

message SaveLogsRequest {
  // The path (URI) for the servod (containerized or running as a daemon) host.
  // If cros-servod and docker-servod live on the same host, this parameter
  // should be empty.
  string servo_host_path = 1;

  // The servod Docker container name.
  string servod_docker_container_name = 2;

  // A list of ports that servod is running on the servo host.
  repeated int32 servod_ports = 3;

  // A mapping between the paths in the requests and their checkpoint
  // line numbers.
  // For all files in the map, only the content will be saved after their
  // corresponding line number.
  // For the files that are no in the map, the whole file will be saved.
  map<string, int32> path_to_line_number = 4;

  // The directory where servo and servo host log files should be saved to.
  string dest = 5;
}

message SaveLogsResponse {}