60 lines
1.2 KiB
Go
60 lines
1.2 KiB
Go
package register
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import "time"
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// Watcher is an interface that returns updates
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// about services within the register.
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type Watcher interface {
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// Next is a blocking call
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Next() (*Result, error)
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// Stop stops the watcher
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Stop()
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}
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// Result is returned by a call to Next on
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// the watcher. Actions can be create, update, delete
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type Result struct {
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// Service holds register service
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Service *Service
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// Action holds the action
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Action string
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}
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// EventType defines register event type
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type EventType int
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const (
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// Create is emitted when a new service is registered
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Create EventType = iota
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// Delete is emitted when an existing service is deregistered
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Delete
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// Update is emitted when an existing service is updated
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Update
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)
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// String returns human readable event type
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func (t EventType) String() string {
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switch t {
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case Create:
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return "create"
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case Delete:
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return "delete"
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case Update:
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return "update"
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default:
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return "unknown"
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}
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}
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// Event is register event
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type Event struct {
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// Timestamp is event timestamp
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Timestamp time.Time
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// Service is register service
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Service *Service
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// ID is register id
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ID string
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// Type defines type of event
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Type EventType
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}
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