130 lines
3.0 KiB
Go
130 lines
3.0 KiB
Go
package main
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import (
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"context"
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"embed"
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"flag"
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"fmt"
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"io"
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"net"
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"net/http"
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"os"
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"os/signal"
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"strconv"
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"sync"
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"time"
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"projectreshoot/db"
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"projectreshoot/logging"
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"projectreshoot/server"
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"github.com/pkg/errors"
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)
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// Initializes and runs the server
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func run(ctx context.Context, w io.Writer, args map[string]string) error {
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ctx, cancel := signal.NotifyContext(ctx, os.Interrupt)
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defer cancel()
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config, err := server.GetConfig(args)
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if err != nil {
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return errors.Wrap(err, "server.GetConfig")
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}
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var logfile *os.File = nil
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if config.LogOutput == "both" || config.LogOutput == "file" {
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logfile, err = logging.GetLogFile(config.LogDir)
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if err != nil {
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return errors.Wrap(err, "logging.GetLogFile")
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}
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defer logfile.Close()
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}
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var consoleWriter io.Writer
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if config.LogOutput == "both" || config.LogOutput == "console" {
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consoleWriter = w
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}
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logger, err := logging.GetLogger(
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config.LogLevel,
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consoleWriter,
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logfile,
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config.LogDir,
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)
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if err != nil {
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return errors.Wrap(err, "logging.GetLogger")
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}
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conn, err := db.ConnectToDatabase(&config.TursoDBName, &config.TursoToken)
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if err != nil {
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return errors.Wrap(err, "db.ConnectToDatabase")
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}
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defer conn.Close()
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srv := server.NewServer(config, logger, conn)
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httpServer := &http.Server{
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Addr: net.JoinHostPort(config.Host, config.Port),
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Handler: srv,
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}
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// Runs function for testing in dev if --test flag true
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if args["test"] == "true" {
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test(config, logger, conn, httpServer)
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return nil
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}
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go func() {
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fmt.Fprintf(w, "Listening on %s\n", httpServer.Addr)
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if err := httpServer.ListenAndServe(); err != nil && err != http.ErrServerClosed {
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fmt.Fprintf(os.Stderr, "Error listening and serving: %s\n", err)
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}
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}()
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var wg sync.WaitGroup
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wg.Add(1)
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go func() {
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defer wg.Done()
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<-ctx.Done()
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shutdownCtx := context.Background()
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shutdownCtx, cancel := context.WithTimeout(shutdownCtx, 10*time.Second)
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defer cancel()
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if err := httpServer.Shutdown(shutdownCtx); err != nil {
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fmt.Fprintf(os.Stderr, "Error shutting down http server: %s\n", err)
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}
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}()
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wg.Wait()
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fmt.Fprintln(w, "Shutting down")
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return nil
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}
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//go:embed static/*
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var static embed.FS
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// Start of runtime. Parse commandline arguments & flags, Initializes context
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// and starts the server
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func main() {
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// Parse commandline args
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host := flag.String("host", "", "Override host to listen on")
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port := flag.String("port", "", "Override port to listen on")
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test := flag.Bool("test", false, "Run test function instead of main program")
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loglevel := flag.String("loglevel", "", "Set log level")
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logoutput := flag.String("logoutput", "", "Set log destination (file, console or both)")
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flag.Parse()
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// Map the args for easy access
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args := map[string]string{
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"host": *host,
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"port": *port,
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"test": strconv.FormatBool(*test),
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"loglevel": *loglevel,
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"logoutput": *logoutput,
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}
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// Start the server
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ctx := context.Background()
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if err := run(ctx, os.Stdout, args); err != nil {
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fmt.Fprintf(os.Stderr, "%s\n", err)
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os.Exit(1)
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}
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}
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