forked from fnproject/fn
/
init.go
63 lines (58 loc) · 1.62 KB
/
init.go
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package server
import (
"context"
"fmt"
"os"
"os/signal"
"strings"
"github.com/gin-gonic/gin"
"github.com/sirupsen/logrus"
"github.com/spf13/viper"
)
func init() {
viper.AutomaticEnv() // picks up env vars automatically
cwd, err := os.Getwd()
if err != nil {
logrus.WithError(err).Fatalln("")
}
// Replace forward slashes in case this is windows, URL parser errors
cwd = strings.Replace(cwd, "\\", "/", -1)
viper.SetEnvKeyReplacer(strings.NewReplacer(".", "_"))
viper.SetDefault(EnvLogLevel, "info")
viper.SetDefault(EnvMQURL, fmt.Sprintf("bolt://%s/data/worker_mq.db", cwd))
viper.SetDefault(EnvDBURL, fmt.Sprintf("sqlite3://%s/data/fn.db", cwd))
viper.SetDefault(EnvLOGDBURL, "") // default to just using DB url
viper.SetDefault(EnvPort, 8080)
viper.SetDefault(EnvZipkinURL, "") // off default
viper.SetDefault(EnvAPIURL, fmt.Sprintf("http://127.0.0.1:%d", viper.GetInt(EnvPort)))
viper.AutomaticEnv() // picks up env vars automatically
logLevel, err := logrus.ParseLevel(viper.GetString(EnvLogLevel))
if err != nil {
logrus.WithError(err).Fatalln("Invalid log level.")
}
logrus.SetLevel(logLevel)
gin.SetMode(gin.ReleaseMode)
if logLevel == logrus.DebugLevel {
gin.SetMode(gin.DebugMode)
}
}
func contextWithSignal(ctx context.Context, signals ...os.Signal) context.Context {
newCTX, halt := context.WithCancel(ctx)
c := make(chan os.Signal, 1)
signal.Notify(c, signals...)
go func() {
for {
select {
case <-c:
logrus.Info("Halting...")
halt()
return
case <-ctx.Done():
logrus.Info("Halting... Original server context canceled.")
halt()
return
}
}
}()
return newCTX
}