81 lines
1.8 KiB
Go
81 lines
1.8 KiB
Go
package nats
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import "gobot.io/x/gobot/v2"
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const (
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// Data event when data is available for Driver
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Data = "data"
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// Error event when error occurs in Driver
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Error = "error"
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)
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// Driver for NATS
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type Driver struct {
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name string
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topic string
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connection gobot.Connection
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gobot.Eventer
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gobot.Commander
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}
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// NewDriver returns a new Gobot NATS Driver
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func NewDriver(a *Adaptor, topic string) *Driver {
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m := &Driver{
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name: gobot.DefaultName("NATS"),
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topic: topic,
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connection: a,
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Eventer: gobot.NewEventer(),
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Commander: gobot.NewCommander(),
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}
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return m
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}
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// Name returns name for the Driver
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func (m *Driver) Name() string { return m.name }
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// SetName sets name for the Driver
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func (m *Driver) SetName(name string) { m.name = name }
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// Connection returns Connections used by the Driver
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func (m *Driver) Connection() gobot.Connection {
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return m.connection
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}
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func (m *Driver) adaptor() *Adaptor {
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//nolint:forcetypeassert // ok here
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return m.Connection().(*Adaptor)
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}
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// Start starts the Driver
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func (m *Driver) Start() error {
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return nil
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}
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// Halt halts the Driver
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func (m *Driver) Halt() error {
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return nil
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}
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// Topic returns the current topic for the Driver
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func (m *Driver) Topic() string { return m.topic }
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// SetTopic sets the current topic for the Driver
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func (m *Driver) SetTopic(topic string) { m.topic = topic }
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// Publish a message to the current device topic
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func (m *Driver) Publish(data interface{}) bool {
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//nolint:forcetypeassert // ok here
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message := data.([]byte)
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return m.adaptor().Publish(m.topic, message)
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}
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// On subscribes to data updates for the current device topic,
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// and then calls the message handler function when data is received
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func (m *Driver) On(n string, f func(msg Message)) error {
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// TODO: also be able to subscribe to Error updates
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m.adaptor().On(m.topic, f)
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return nil
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}
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