runner

type APIConfig struct {
	Address url.URL
	CAFile  string
}

type Command interface {
	Name() string
	// Args are the command-line arguments to launch the process with.
	Args() []string
	// Env is the key=value settings to put in the environment.
	Env() []string
	// Files are a map from base file name to file contents.  These inputs
	// must be written to the ConfigDir before launch.
	Files() map[string]string
	// WithConfig returns a new Command with alternate config
	Config() Config
	WithConfig(Config) Command
}

type Config struct {
	// ConfigDir is where config files live
	ConfigDir string
	// DataDir is where the process writes data
	DataDir string
	// LogDir is where logs are written by the process, if it knows how to
	// log to disk.
	LogDir string
	// NetworkConfig specifies how network addresses get assigned
	NetworkConfig yurt.NetworkConfig
	// NodeName is the name for this instance of the process.  This may or
	// may not be an addressable name, depending on NetworkConfig.
	NodeName string
	TLS      pki.TLSConfigPEM
	Ports    yurt.Ports
}

type Harness interface {
	// Endpoint returns the config for the named service.  If local is true,
	// the config is relative to the caller, otherwise it is given in terms
	// of the service nodes themselves.  These may be equivalent depending
	// on the execution model, i.e. whether port forwarding is being used
	// to bridge the local and execution networks.
	Endpoint(name string, local bool) (*APIConfig, error)
	Stop() error
	Kill()
	Wait() error
}

type LeaderAPI interface {
	Leader() (string, error)
}

type LeaderPeersAPI interface {
	Leader() (string, error)
	Peers() ([]string, error)
}

type Status interface {
	// Status() returns the service-dependent status result, or an error
	// if the service isn't even able to do that
	Status() (interface{}, error)
}