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/*
* Copyright (C) 2017 "IoT.bzh"
* Author Sebastien Douheret <sebastien@iot.bzh>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package xaapiv1
import (
"encoding/json"
"fmt"
)
// EventRegisterArgs is the parameters (json format) of /events/register command
type EventRegisterArgs struct {
Name string `json:"name"`
ProjectID string `json:"filterProjectID"`
}
// EventUnRegisterArgs is the parameters (json format) of /events/unregister command
type EventUnRegisterArgs struct {
Name string `json:"name"`
ID int `json:"id"`
}
// Events Type definitions
const (
// EventTypePrefix Used as event prefix
EventTypePrefix = "event:" // following by event type
// Supported Events type
EVTAll = EventTypePrefix + "all"
EVTServerConfig = EventTypePrefix + "server-config" // type EventMsg with Data type xaapiv1.ServerCfg
EVTProjectAdd = EventTypePrefix + "project-add" // type EventMsg with Data type xaapiv1.ProjectConfig
EVTProjectDelete = EventTypePrefix + "project-delete" // type EventMsg with Data type xaapiv1.ProjectConfig
EVTProjectChange = EventTypePrefix + "project-state-change" // type EventMsg with Data type xaapiv1.ProjectConfig
)
// EVTAllList List of all supported events
var EVTAllList = []string{
EVTServerConfig,
EVTProjectAdd,
EVTProjectDelete,
EVTProjectChange,
}
// EventMsg Event message send over Websocket, data format depend to Type (see DecodeXXX function)
type EventMsg struct {
Time string `json:"time"` // Timestamp
FromSessionID string `json:"sessionID"` // Session ID of client that emits this event
Type string `json:"type"` // Data type
Data interface{} `json:"data"` // Data
}
// DecodeServerCfg Helper to decode Data field type ServerCfg
func (e *EventMsg) DecodeServerCfg() (ServerCfg, error) {
p := ServerCfg{}
if e.Type != EVTServerConfig {
return p, fmt.Errorf("Invalid type")
}
d, err := json.Marshal(e.Data)
if err == nil {
err = json.Unmarshal(d, &p)
}
return p, err
}
// DecodeProjectConfig Helper to decode Data field type ProjectConfig
func (e *EventMsg) DecodeProjectConfig() (ProjectConfig, error) {
var err error
p := ProjectConfig{}
switch e.Type {
case EVTProjectAdd, EVTProjectChange, EVTProjectDelete:
d := []byte{}
d, err = json.Marshal(e.Data)
if err == nil {
err = json.Unmarshal(d, &p)
}
default:
err = fmt.Errorf("Invalid type")
}
return p, err
}
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