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main.go
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main.go
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/*
* Copyright 2020 Comcast Cable Communications Management, LLC
*
* 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 (
"net/http"
"os"
"path"
"time"
"github.com/go-kit/log"
"github.com/Comcast/prombox/api"
"github.com/Comcast/prombox/api/config"
"github.com/Comcast/prombox/api/handlers"
"github.com/Comcast/prombox/api/version"
"github.com/Comcast/prombox/ui"
)
//Name of the app
var name = "prombox"
var buildVersion = ""
var buildTime = ""
var buildHost = ""
var gitHash = ""
var gitBranch = ""
func main() {
var logger log.Logger
logger = log.NewLogfmtLogger(log.NewSyncWriter(os.Stderr))
logger = log.With(logger, "ts", log.DefaultTimestampUTC, "caller", log.DefaultCaller)
//Read configuration from Environment Variables.
config, err := config.FromEnvironmentVariables(config.OsEnvVars{})
if err != nil {
logger.Log("msg", "fatal error loading configuration", "err", err.Error())
os.Exit(1)
}
buildInfo := version.BuildInfo{
Name: name,
Version: buildVersion,
BuildTime: buildTime,
BuildHost: buildHost,
GitHash: gitHash,
GitBranch: gitBranch,
}
server := &http.Server{
Addr: ":" + config.Port,
ReadTimeout: 60 * time.Second,
WriteTimeout: 60 * time.Second,
MaxHeaderBytes: 1 << 16,
}
// Endpoints for the API and Vue client
apiHandler := api.NewAPI(buildInfo, *config, logger)
http.Handle("/api/", apiHandler)
uiHandler := handlers.AccessLogHandler(log.With(logger, "hander", "uiHandler"), http.FileServer(SinglePageApplication{ui.Assets}))
http.Handle("/", uiHandler)
logger.Log("port", config.Port, "cors.AllowOrigin", config.Cors.AllowOrigin)
fatalErr := server.ListenAndServe()
if fatalErr != nil {
logger.Log("msg", "fatal serve error", "err", fatalErr.Error())
os.Exit(1)
}
}
//SinglePageApplication is a Vue integration
type SinglePageApplication struct {
fs http.FileSystem
}
//Open overrides the fs function
func (spa SinglePageApplication) Open(name string) (http.File, error) {
if ext := path.Ext(name); name != "/" && (ext == "" || ext == ".html") {
name = "index.html"
}
return spa.fs.Open(name)
}