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

syntax = "proto3";

package protos;

option go_package = "golang.org/x/build/internal/gomote/protos";

// GomoteService can manage the lifecycle of gomote instances and interact with them.
service GomoteService {
  // Authenticate provides authentication information without any additonal action.
  rpc Authenticate (AuthenticateRequest) returns (AuthenticateResponse) {}
  // CreateInstance creates a gomote instance.
  rpc CreateInstance (CreateInstanceRequest) returns (stream CreateInstanceResponse) {}
  // DestroyInstance destroys a gomote instance.
  rpc DestroyInstance (DestroyInstanceRequest) returns (DestroyInstanceResponse) {}
  // ExecuteCommand executes a command on the gomote instance.
  rpc ExecuteCommand (ExecuteCommandRequest) returns (stream ExecuteCommandResponse) {}
  // InstanceAlive gives the liveness state of a gomote instance.
  rpc InstanceAlive (InstanceAliveRequest) returns (InstanceAliveResponse) {}
  // ListDirectory lists the contents of a directory on an gomote instance.
  rpc ListDirectory (ListDirectoryRequest) returns (ListDirectoryResponse) {}
  // ListInstances lists all of the live gomote instances owned by the caller.
  rpc ListInstances (ListInstancesRequest) returns (ListInstancesResponse) {}
  // ReadTGZ tars and zips a dicrectory which exists on the gomote instance.
  rpc ReadTGZ (ReadTGZRequest) returns (stream ReadTGZResponse) {}
  // RemoveFiles removes files or directories from the gomote instance.
  rpc RemoveFiles (RemoveFilesRequest) returns (RemoveFilesResponse) {}
  // RetrieveSSHCredentials retrieves the SSH credentials for the specified gomote instance.
  rpc RetrieveSSHCredentials (RetrieveSSHCredentialsRequest) returns (RetrieveSSHCredentialsResponse) {}
  // WriteTGZ expands a tar and ziped file onto the file system of a gomote instance.
  rpc WriteTGZ (stream WriteTGZRequest) returns (WriteTGZResponse) {}
  // WriteTGZFromURL retrieves a tar and ziped file from a URL and expands it onto the file system of a gomote instance.
  rpc WriteTGZFromURL (WriteTGZFromURLRequest) returns (WriteTGZFromURLResponse) {}
}

// AuthenticateRequest specifies the data needed for an authentication request.
message AuthenticateRequest {}

// AuthenticateResponse contains authenticated user data.
message AuthenticateResponse {}

// CreateInstanceRequest specifies the data needed to create a gomote instance.
message CreateInstanceRequest {
  string builder_type = 1;
}

// CreateInstanceResponse contains data about a created gomote instance.
message CreateInstanceResponse {
  // Instance information for the requested instance.
  Instance instance = 1;
  enum Status {
    UNKNOWN = 0;
    WAITING = 1;
    COMPLETE = 2;
  }
  // The status for the requested create.
  Status status = 2;
  // Waiters ahead is the count of how many instances are being scheduled for
  // creation before the current instance creation request.
  int64 waiters_ahead = 3;
}

// DestroyInstanceRequest specifies the data needed to destroy a gomote instance.
message DestroyInstanceRequest {
  // The unique identifier for a gomote instance.
  string gomote_id = 1;
}

// DestroyInstanceResponse contains data about a destroyed gomote instance.
message DestroyInstanceResponse {}

// ExecuteCommandRequest specifies the data needed to execute a command on a gomote instance.
message ExecuteCommandRequest {}

// ExecuteCommandResponse contains data about the executed command.
message ExecuteCommandResponse {}

// Instance contains descriptive information about a gomote instance.
message Instance {
  // The unique identifier for a gomote instance.
  string gomote_id = 1;
  // Builder type for the gomote instance.
  string builder_type = 2;
  // Host type for the gomote instance.
  string host_type = 3;
  // The timestamp for when the builder instance will expire. It is
  // reprsented in Unix epoch time format.
  int64 expires = 4;
}

// InstanceAliveRequest specifies the data needed to check the liveness of a gomote instance.
message InstanceAliveRequest {
  // The unique identifier for a gomote instance.
  string gomote_id = 1;
}

// InstanceAliveResponse contains instance liveness state.
message InstanceAliveResponse {}

// ListDirectoryRequest specifies the data needed to list contents of a directory from a gomote instance.
message ListDirectoryRequest {}

// ListDirectoryResponse contains the directory listing of a gomote instance.
message ListDirectoryResponse {}

// ListInstancesRequest specifies the data needed to list the live gomote instances owned by the caller.
message ListInstancesRequest {}

// ListInstancesResponse contains the list of live gomote instances owned by the caller.
message ListInstancesResponse {
  repeated Instance instances = 1;
}

// ReadTGZRequest specifies the data needed to retrieve a tar and zipped directory from a gomote instance.
message ReadTGZRequest {}

// ReadTGZResponse contains a tar and zipped directory from a gomote instance.
message ReadTGZResponse {}

// RemoveFilesRequest specifies the data needed to remove files or directories from a gomote instance.
message RemoveFilesRequest {
  // The unique identifier for a gomote instance.
  string gomote_id = 1;
  // The list of paths for files or directories to remove from the file system.
  // When everything should be deleted, "." should be used.
  // The paths are relative to the work directory.
  repeated string paths = 2;
}

// RemoveFilesResponse contains the results from removing files or directories from a gomote instance.
message RemoveFilesResponse {}

// RetrieveSSHCredentialsRequest specifies the data needed to retrieve SSH credentials for a gomote instance.
message RetrieveSSHCredentialsRequest {}

// RetrieveSSHCredentialsResponse contains SSH credentials for a gomote instance.
message RetrieveSSHCredentialsResponse {}

// WriteTGZRequest specifies the data needed to expand a tar and zipped file onto the file system of a gomote instance.
message WriteTGZRequest {}

// WriteTGZResponse contains the results from expanding a tar and zipped file onto the file system of a gomote instance.
message WriteTGZResponse {}

// WriteTGZFromURLRequest specifies the data needed retrieve a file and expand it onto the file system of a gomote instance.
// It instructs the buildlet to download the tar.gz file from the url and write it to directory, a relative directory from the workdir.
// If the directory is empty, they're placed at the root of the buildlet's work directory.
// The directory is created if necessary.
// The url must be of a tar.gz file.
message WriteTGZFromURLRequest {
  string gomote_id = 1;
  string url = 2;
  string directory = 3;
}

// WriteTGZFromURLResponse contains the results from retrieving a file and expanding it onto the file system of a gomote instance.
message WriteTGZFromURLResponse {}