/
controller.go
80 lines (68 loc) · 2.14 KB
/
controller.go
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package tptaddr_controller
import (
"context"
"github.com/aperturerobotics/bifrost/link"
"github.com/aperturerobotics/controllerbus/bus"
"github.com/aperturerobotics/controllerbus/controller"
"github.com/aperturerobotics/controllerbus/directive"
"github.com/blang/semver"
"github.com/sirupsen/logrus"
)
// ControllerID is the ID of the controller.
const ControllerID = "bifrost/tptaddr/controller"
// Version is the version of the controller implementation.
var Version = semver.MustParse("0.0.1")
// Controller implements the tptaddr dialer controller.
// Resolves EstablishLinkWithPeer directives by creating LookupTptAddr and DialTptAddr directives.
type Controller struct {
// le is the logger
le *logrus.Entry
// bus is the controller bus
bus bus.Bus
// conf is the config
conf *Config
}
// NewController constructs a new controller.
func NewController(
le *logrus.Entry,
bus bus.Bus,
conf *Config,
) *Controller {
return &Controller{
le: le,
conf: conf,
bus: bus,
}
}
// GetControllerInfo returns information about the controller.
func (c *Controller) GetControllerInfo() *controller.Info {
return controller.NewInfo(
ControllerID,
Version,
"lookup and dial peer transport address",
)
}
// Execute executes the forwarding controller.
// Returning nil ends execution.
// Returning an error triggers a retry with backoff.
func (c *Controller) Execute(ctx context.Context) error {
return nil
}
// HandleDirective asks if the handler can resolve the directive.
// If it can, it returns a resolver. If not, returns nil.
// Any unexpected errors are returned for logging.
// It is safe to add a reference to the directive during this call.
func (c *Controller) HandleDirective(ctx context.Context, di directive.Instance) ([]directive.Resolver, error) {
dir := di.GetDirective()
if d, ok := dir.(link.EstablishLinkWithPeer); ok {
return c.resolveEstablishLinkWithPeer(ctx, di, d)
}
return nil, nil
}
// Close releases any resources used by the controller.
// Error indicates any issue encountered releasing.
func (c *Controller) Close() error {
return nil
}
// _ is a type assertion
var _ controller.Controller = ((*Controller)(nil))