telegraf/plugins/inputs/fibaro/fibaro.go

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package fibaro
import (
"encoding/json"
"fmt"
"net/http"
"strconv"
"time"
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"github.com/influxdata/telegraf"
"github.com/influxdata/telegraf/internal"
"github.com/influxdata/telegraf/plugins/inputs"
)
const defaultTimeout = 5 * time.Second
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const sampleConfig = `
## Required Fibaro controller address/hostname.
## Note: at the time of writing this plugin, Fibaro only implemented http - no https available
url = "http://<controller>:80"
## Required credentials to access the API (http://<controller/api/<component>)
username = "<username>"
password = "<password>"
## Amount of time allowed to complete the HTTP request
# timeout = "5s"
`
const description = "Read devices value(s) from a Fibaro controller"
// Fibaro contains connection information
type Fibaro struct {
URL string `toml:"url"`
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// HTTP Basic Auth Credentials
Username string `toml:"username"`
Password string `toml:"password"`
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Timeout internal.Duration `toml:"timeout"`
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client *http.Client
}
// LinkRoomsSections links rooms to sections
type LinkRoomsSections struct {
Name string
SectionID uint16
}
// Sections contains sections informations
type Sections struct {
ID uint16 `json:"id"`
Name string `json:"name"`
}
// Rooms contains rooms informations
type Rooms struct {
ID uint16 `json:"id"`
Name string `json:"name"`
SectionID uint16 `json:"sectionID"`
}
// Devices contains devices informations
type Devices struct {
ID uint16 `json:"id"`
Name string `json:"name"`
RoomID uint16 `json:"roomID"`
Type string `json:"type"`
Enabled bool `json:"enabled"`
Properties struct {
Dead interface{} `json:"dead"`
Energy interface{} `json:"energy"`
Power interface{} `json:"power"`
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Value interface{} `json:"value"`
Value2 interface{} `json:"value2"`
} `json:"properties"`
}
// Description returns a string explaining the purpose of this plugin
func (f *Fibaro) Description() string { return description }
// SampleConfig returns text explaining how plugin should be configured
func (f *Fibaro) SampleConfig() string { return sampleConfig }
// getJSON connects, authenticates and reads JSON payload returned by Fibaro box
func (f *Fibaro) getJSON(path string, dataStruct interface{}) error {
var requestURL = f.URL + path
req, err := http.NewRequest("GET", requestURL, nil)
if err != nil {
return err
}
req.SetBasicAuth(f.Username, f.Password)
resp, err := f.client.Do(req)
if err != nil {
return err
}
defer resp.Body.Close()
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if resp.StatusCode != http.StatusOK {
err = fmt.Errorf("Response from url \"%s\" has status code %d (%s), expected %d (%s)",
requestURL,
resp.StatusCode,
http.StatusText(resp.StatusCode),
http.StatusOK,
http.StatusText(http.StatusOK))
return err
}
dec := json.NewDecoder(resp.Body)
err = dec.Decode(&dataStruct)
if err != nil {
return err
}
return nil
}
// Gather fetches all required information to output metrics
func (f *Fibaro) Gather(acc telegraf.Accumulator) error {
if f.client == nil {
f.client = &http.Client{
Transport: &http.Transport{
Proxy: http.ProxyFromEnvironment,
},
Timeout: f.Timeout.Duration,
}
}
var tmpSections []Sections
err := f.getJSON("/api/sections", &tmpSections)
if err != nil {
return err
}
sections := map[uint16]string{}
for _, v := range tmpSections {
sections[v.ID] = v.Name
}
var tmpRooms []Rooms
err = f.getJSON("/api/rooms", &tmpRooms)
if err != nil {
return err
}
rooms := map[uint16]LinkRoomsSections{}
for _, v := range tmpRooms {
rooms[v.ID] = LinkRoomsSections{Name: v.Name, SectionID: v.SectionID}
}
var devices []Devices
err = f.getJSON("/api/devices", &devices)
if err != nil {
return err
}
for _, device := range devices {
// skip device in some cases
if device.RoomID == 0 ||
device.Enabled == false ||
device.Properties.Dead == "true" ||
device.Type == "com.fibaro.zwaveDevice" {
continue
}
tags := map[string]string{
"deviceId": strconv.FormatUint(uint64(device.ID), 10),
"section": sections[rooms[device.RoomID].SectionID],
"room": rooms[device.RoomID].Name,
"name": device.Name,
"type": device.Type,
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}
fields := make(map[string]interface{})
if device.Properties.Energy != nil {
if fValue, err := strconv.ParseFloat(device.Properties.Energy.(string), 64); err == nil {
fields["energy"] = fValue
}
}
if device.Properties.Power != nil {
if fValue, err := strconv.ParseFloat(device.Properties.Power.(string), 64); err == nil {
fields["power"] = fValue
}
}
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if device.Properties.Value != nil {
value := device.Properties.Value
switch value {
case "true":
value = "1"
case "false":
value = "0"
}
if fValue, err := strconv.ParseFloat(value.(string), 64); err == nil {
fields["value"] = fValue
}
}
if device.Properties.Value2 != nil {
if fValue, err := strconv.ParseFloat(device.Properties.Value2.(string), 64); err == nil {
fields["value2"] = fValue
}
}
acc.AddFields("fibaro", fields, tags)
}
return nil
}
func init() {
inputs.Add("fibaro", func() telegraf.Input {
return &Fibaro{
Timeout: internal.Duration{Duration: defaultTimeout},
}
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})
}