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event.go
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event.go
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package event
import (
"encoding/json"
goerr "errors"
"github.com/mintoolkit/mint/pkg/errors"
)
// Event errors
var (
ErrUnknownEvent = goerr.New("unknown event type")
ErrUnexpectedEvent = goerr.New("unexpected event type")
)
// Type is an event ID type
type Type string
// Supported events
const (
StartMonitorDone Type = "event.monitor.start.done"
StartMonitorFailed Type = "event.monitor.start.failed"
StopMonitorDone Type = "event.monitor.stop.done"
ShutdownSensorDone Type = "event.sensor.shutdown.done"
Error Type = "event.error"
)
type Message struct {
Name Type `json:"name"`
Data interface{} `json:"data,omitempty"`
}
// StartMonitorFailed contains additional context for the failure
type StartMonitorFailedData struct {
Component string `json:"component,omitempty"`
State string `json:"state,omitempty"`
Context map[string]string `json:"context,omitempty"`
Errors []string `json:"errors,omitempty"`
}
const (
StateSensorTypeCreating = "sensor.type.creating"
StateCmdStartMonCmdWaiting = "cmd.monitor.start.waiting"
StateEnvPreparing = "env.preparing"
StateMonCreating = "monitor.creating"
StateMonStarting = "monitor.starting"
)
const (
ComSensorConstructor = "sensor.constructor"
ComSensorCmdServer = "sensor.cmd.server"
ComMonitorRunner = "monitor.runner"
)
const (
CtxSensorType = "sensor.type"
CtxCmdType = "cmd.type"
)
func (m *Message) UnmarshalJSON(data []byte) error {
var tmp struct {
Name Type `json:"name"`
Data json.RawMessage `json:"data,omitempty"`
}
if err := json.Unmarshal(data, &tmp); err != nil {
return err
}
m.Name = tmp.Name
switch tmp.Name {
case Error:
var data errors.SensorError
if err := json.Unmarshal(tmp.Data, &data); err != nil {
return err
}
m.Data = &data
case StartMonitorFailed:
var data StartMonitorFailedData
if err := json.Unmarshal(tmp.Data, &data); err != nil {
return err
}
m.Data = &data
default:
if len(tmp.Data) > 0 {
return json.Unmarshal(tmp.Data, &m.Data)
}
}
return nil
}