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75 lines
2.2 KiB
Go
75 lines
2.2 KiB
Go
// Copyright © 2020 Ettore Di Giacinto <mudler@mocaccino.org>
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//
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 2 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License along
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// with this program; if not, see <http://www.gnu.org/licenses/>.
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package pluggable
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import (
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"encoding/json"
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"fmt"
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)
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// EventType describes an event type
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type EventType string
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// Event describes the event structure.
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// Contains a Name field and a Data field which
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// is marshalled in JSON
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type Event struct {
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Name EventType `json:"name"`
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Data string `json:"data"`
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File string `json:"file"` // If Data >> 10K write content to file instead
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}
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// EventResponse describes the event response structure
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// It represent the JSON response from plugins
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type EventResponse struct {
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State string `json:"state"`
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Data string `json:"data"`
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Error string `json:"error"`
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}
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// JSON returns the stringified JSON of the Event
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func (e Event) JSON() (string, error) {
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dat, err := json.Marshal(e)
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return string(dat), err
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}
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// Copy returns a copy of Event
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func (e Event) Copy() *Event {
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copy := &e
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return copy
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}
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func (e Event) ResponseEventName(s string) EventType {
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return EventType(fmt.Sprintf("%s-%s", e.Name, s))
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}
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// Unmarshal decodes the json payload in the given parameteer
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func (r EventResponse) Unmarshal(i interface{}) error {
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return json.Unmarshal([]byte(r.Data), i)
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}
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// Errored returns true if the response contains an error
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func (r EventResponse) Errored() bool {
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return len(r.Error) != 0
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}
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// NewEvent returns a new event which can be used for publishing
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// the obj gets automatically serialized in json.
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func NewEvent(name EventType, obj interface{}) (*Event, error) {
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dat, err := json.Marshal(obj)
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return &Event{Name: name, Data: string(dat)}, err
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}
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