/
messages.go
61 lines (53 loc) · 1.58 KB
/
messages.go
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//nolint:wsl,revive
package fleetdbapi
import (
"encoding/json"
"time"
"github.com/pkg/errors"
"github.com/volatiletech/null/v8"
"github.com/metal-toolbox/fleetdb/internal/models"
)
var (
ErrNilServer = errors.New("bogus server structure provided")
ErrBadJSONOut = errors.New("object serializaion failed")
ErrBadJSONIn = errors.New("object deserializaion failed")
)
// MsgMetadata captures some message-type agnostic descriptive data a consumer might need
type MsgMetadata struct {
CreatedAt time.Time `json:"created_at,omitempty"`
UpdatedAt time.Time `json:"updated_at,omitempty"`
}
// CreateServer is a message type published via NATS
type CreateServer struct {
Metadata *MsgMetadata `json:"metadata,omitempty"`
Name null.String `json:"name"`
FacilityCode null.String `json:"facility_code"`
ID string `json:"id"`
}
// NewCreateServerMessage composes a CreateServer message for NATS
func NewCreateServerMessage(srv *models.Server) ([]byte, error) {
if srv == nil {
return nil, ErrNilServer
}
cs := &CreateServer{
Metadata: &MsgMetadata{
CreatedAt: time.Now(),
},
Name: srv.Name,
FacilityCode: srv.FacilityCode,
ID: srv.ID,
}
byt, err := json.Marshal(cs)
if err != nil {
return nil, errors.Wrap(ErrBadJSONOut, err.Error())
}
return byt, err
}
// DeserializeCreateServer reconstitutes a CreateServer from raw bytes
func DeserializeCreateServer(inc []byte) (*CreateServer, error) {
cs := &CreateServer{}
if err := json.Unmarshal(inc, cs); err != nil {
return nil, errors.Wrap(ErrBadJSONIn, err.Error())
}
return cs, nil
}