// Copyright 2019 The LUCI Authors. All rights reserved.
// Use of this source code is governed under the Apache License, Version 2.0
// that can be found in the LICENSE file.

syntax = "proto3";

option go_package = "go.chromium.org/luci/gce/api/instances/v1;instances";

package instances;

import "google/protobuf/empty.proto";
import "google/protobuf/timestamp.proto";

// A disk associated with a GCE instance.
message Disk {
  // The image associated with this disk.
  // https://cloud.google.com/compute/docs/reference/rest/v1/images/list.
  string image = 1;
}

// A network interface associated with a GCE instance.
message NetworkInterface {
  // The internal IP address associated with this network interface.
  string internal_ip = 1;
  // The external IP addresses associated with this network interface.
  repeated string external_ips = 2;
}

// A GCE instance configured to exist.
// The instance actually exists iff the created timestamp is set.
message Instance {
  // The ID of the VM this instance was created from.
  string id = 1;

  // The hostname associated with this instance.
  string hostname = 2;

  // The zone associated with this instance.
  // https://cloud.google.com/compute/docs/reference/rest/v1/zones/list.
  string zone = 3;

  // The GCP project associated with this instance.
  string project = 4;

  // The timestamp when this instance was created.
  google.protobuf.Timestamp created = 5;

  // The lifetime of this instance.
  // At the end of its lifetime, the instance is deleted.
  int64 lifetime = 6;

  // The hostname of the Swarming server this instance should connect to.
  string swarming = 7;

  // The timestamp when this instance connected to Swarming.
  google.protobuf.Timestamp connected = 8;

  // The timeout of this instance.
  // If no Swarming bot has connected by the timeout, the instance is deleted.
  int64 timeout = 9;

  // Whether this instance is drained or not.
  // A drained instance will be safely deleted regardless of lifetime.
  bool drained = 10;

  // The config revision associated with this instance.
  string config_revision = 11;

  // The disks associated with this instance.
  repeated Disk disks = 12;

  // The network interfaces associated with this instance.
  repeated NetworkInterface network_interfaces = 13;

  // The prefix associated with this instance.
  string prefix = 14;
}

// A request to delete an instance.
message DeleteRequest {
  // The ID of the instance to delete.
  string id = 1;

  // The hostname of the instance to delete.
  string hostname = 2;
}

// A request to get an existing instance.
message GetRequest {
  // The ID of the instance to get.
  string id = 1;

  // The hostname of the instance to get.
  string hostname = 2;
}

// A request to list existing instances.
message ListRequest {
  // The prefix to list instances for.
  string prefix = 1;

  // The value of next_page_token received in a ListResponse. Used to get the
  // next page of instances. If empty, gets the first page.
  string page_token = 2;

  // The maximum number of results to include in the response.
  int32 page_size = 3;

  // A filter to apply when listing instances. Currently the only supported
  // filter is "disks.image=<image>" where <image> is the name of the image to
  // filter for.
  string filter = 4;
}

// A response to a request to list instances.
message ListResponse {
  // The prefix the instances are for.
  string prefix = 1;

  // The instances matching the prefix.
  repeated Instance instances = 2;

  // The value to use as the page_token in a ListRequest to get the next page of
  // instances. If empty, there are no more instances.
  string next_page_token = 3;
}

// A service for manipulating GCE instances.
service Instances {
  // Delete deletes an instance asynchronously.
  rpc Delete(DeleteRequest) returns (google.protobuf.Empty);
  // Get returns an existing instance.
  rpc Get(GetRequest) returns (Instance);
  // List returns existing instances.
  rpc List(ListRequest) returns (ListResponse);
}