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web.go
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web.go
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// Copyright 2019 Weston Schmidt
//
// 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 main
import (
"context"
"fmt"
"github.com/gorilla/mux"
"github.com/prometheus/client_golang/prometheus/promhttp"
"github.com/spf13/viper"
"io/ioutil"
"net/http"
"strconv"
"time"
)
type webHandler struct {
logic *Logic
tempSensors *TempSensors
main_page string
post_page string
ctlRoute *mux.Router
ctlEndpoint *http.Server
metricsRoute *mux.Router
metricsEndpoint *http.Server
}
func (wh *webHandler) handleControl(w http.ResponseWriter, r *http.Request) {
fan_goal := r.URL.Query().Get("fan_goal_state")
if "run" == fan_goal {
fan_duration, err := time.ParseDuration(r.URL.Query().Get("fan_duration"))
fmt.Printf("Duration: %v\n", fan_duration)
if nil == err {
wh.logic.Fan(time.Now().Add(fan_duration))
}
}
preheat := r.URL.Query().Get("preheat_domestic")
if "preheat" == preheat {
wh.logic.Preheat()
}
heat_goal := r.URL.Query().Get("heat_goal_state")
if "run" == heat_goal {
heat_down_duration, err := time.ParseDuration(r.URL.Query().Get("heat_down_duration"))
if nil == err {
fmt.Printf("Duration: %v\n", heat_down_duration)
wh.logic.HeatDownstairs(time.Now().Add(heat_down_duration))
}
heat_up_duration, err := time.ParseDuration(r.URL.Query().Get("heat_up_duration"))
if nil == err {
fmt.Printf("Duration: %v\n", heat_up_duration)
wh.logic.HeatUpstairs(time.Now().Add(heat_up_duration))
}
}
if "maintain" == heat_goal {
if goal, err := strconv.ParseFloat(r.URL.Query().Get("heat_target"), 64); nil == err {
wh.logic.SetDownstairsTarget(goal)
}
}
buf, _ := ioutil.ReadFile(wh.post_page)
w.WriteHeader(200)
w.Header().Set("Content-Type", "text/html")
w.Write(buf)
}
func (wh *webHandler) page(w http.ResponseWriter, r *http.Request) {
buf, _ := ioutil.ReadFile(wh.main_page)
w.WriteHeader(200)
w.Header().Set("Content-Type", "text/html")
w.Write(buf)
}
func (wh *webHandler) Start() {
wh.ctlEndpoint = &http.Server{
Handler: wh.ctlRoute,
Addr: "127.0.0.1:8000",
WriteTimeout: 15 * time.Second,
ReadTimeout: 15 * time.Second,
}
wh.metricsEndpoint = &http.Server{
Handler: wh.metricsRoute,
Addr: "127.0.0.1:8001",
WriteTimeout: 15 * time.Second,
ReadTimeout: 15 * time.Second,
}
go wh.ctlEndpoint.ListenAndServe()
go wh.metricsEndpoint.ListenAndServe()
}
func (wh *webHandler) Stop() {
wh.ctlEndpoint.Shutdown(context.Background())
}
func NewWeb(l *Logic, ts *TempSensors, v *viper.Viper) *webHandler {
wh := &webHandler{
logic: l,
tempSensors: ts,
main_page: "index.html",
post_page: "post.html",
}
wh.ctlRoute = mux.NewRouter()
wh.ctlRoute.HandleFunc("/", wh.page)
wh.ctlRoute.HandleFunc("/control", wh.handleControl)
wh.metricsRoute = mux.NewRouter()
wh.metricsRoute.Handle("/metrics", promhttp.Handler())
return wh
}