syntax = "proto3";

package api;

option go_package = "github.com/psviderski/uncloud/internal/machine/api/pb";

// Vendored at internal/machine/api/vendor/google/rpc/status.proto.
import "google/rpc/status.proto";
import "google/protobuf/timestamp.proto";

// Common metadata message nested in all reply message types, injected by the gRPC proxy to provide information
// about the machine that responded to the request.
message Metadata {
  // ID of the machine the response came from.
  string machine_id = 4;
  // Name of the machine the response came from.
  string machine_name = 5;
  // Address of the machine the response came from.
  string machine_addr = 1;

  // error is set if the request to upstream failed. The rest of the response is undefined.
  string error = 2;
  // error as a gRPC Status message.
  google.rpc.Status status = 3;
}

// A helper message for marshalling the metadata field and injecting it into the response by the gRPC proxy.
message Empty {
  Metadata metadata = 1;
}

// EmptyResponse is a response message to be returned by the gRPC proxy when a request to the upstream failed.
// The nested Empty.Metadata message should contain an error.
message EmptyResponse {
  repeated Empty messages = 1;
}

message IP {
  bytes ip = 1;
}

message IPPort {
  IP ip = 1;
  uint32 port = 2;
}

message IPPrefix {
  IP ip = 1;
  uint32 bits = 2;
}

message LogsRequest {
  string id = 1;
  // Options for logs retrieval.
  bool follow = 2;
  int32 tail = 3; // -1 means all
  string since = 4; // https://www.rfc-editor.org/rfc/rfc3339.html timestamp or Go duration string
  string until = 5; // https://www.rfc-editor.org/rfc/rfc3339.html timestamp or Go duration string
}

message LogEntry {
  enum StreamType {
    UNKNOWN = 0;
    STDOUT = 1;
    STDERR = 2;
    HEARTBEAT = 3;
  }
  StreamType stream = 1;
  google.protobuf.Timestamp timestamp = 2;
  // Log line content. Empty for heartbeat entries.
  bytes message = 3;
}