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mirror of https://github.com/oauth2-proxy/oauth2-proxy.git synced 2024-11-24 08:52:25 +02:00
oauth2-proxy/main.go
Phil Taprogge d69fd6af22
Allow Logging to stdout with separate Error Log Channel (#718)
* Add dedicated error logging writer

* Document new errors to stdout flag

* Update changelog

* Thread-safe the log buffer

* Address feedback

* Remove duplication by adding log level

* Clean up error formatting

* Apply suggestions from code review

Co-authored-by: Joel Speed <Joel.speed@hotmail.co.uk>
2020-08-10 11:44:08 +01:00

105 lines
2.7 KiB
Go

package main
import (
"fmt"
"math/rand"
"net"
"os"
"os/signal"
"runtime"
"syscall"
"time"
"github.com/justinas/alice"
"github.com/oauth2-proxy/oauth2-proxy/pkg/apis/options"
"github.com/oauth2-proxy/oauth2-proxy/pkg/logger"
"github.com/oauth2-proxy/oauth2-proxy/pkg/middleware"
"github.com/oauth2-proxy/oauth2-proxy/pkg/validation"
)
func main() {
logger.SetFlags(logger.Lshortfile)
flagSet := options.NewFlagSet()
config := flagSet.String("config", "", "path to config file")
showVersion := flagSet.Bool("version", false, "print version string")
err := flagSet.Parse(os.Args[1:])
if err != nil {
logger.Printf("ERROR: Failed to parse flags: %v", err)
os.Exit(1)
}
if *showVersion {
fmt.Printf("oauth2-proxy %s (built with %s)\n", VERSION, runtime.Version())
return
}
legacyOpts := options.NewLegacyOptions()
err = options.Load(*config, flagSet, legacyOpts)
if err != nil {
logger.Errorf("ERROR: Failed to load config: %v", err)
os.Exit(1)
}
opts, err := legacyOpts.ToOptions()
if err != nil {
logger.Errorf("ERROR: Failed to convert config: %v", err)
os.Exit(1)
}
err = validation.Validate(opts)
if err != nil {
logger.Printf("%s", err)
os.Exit(1)
}
validator := NewValidator(opts.EmailDomains, opts.AuthenticatedEmailsFile)
oauthproxy, err := NewOAuthProxy(opts, validator)
if err != nil {
logger.Errorf("ERROR: Failed to initialise OAuth2 Proxy: %v", err)
os.Exit(1)
}
rand.Seed(time.Now().UnixNano())
chain := alice.New()
if opts.ForceHTTPS {
_, httpsPort, err := net.SplitHostPort(opts.HTTPSAddress)
if err != nil {
logger.Fatalf("FATAL: invalid HTTPS address %q: %v", opts.HTTPAddress, err)
}
chain = chain.Append(middleware.NewRedirectToHTTPS(httpsPort))
}
healthCheckPaths := []string{opts.PingPath}
healthCheckUserAgents := []string{opts.PingUserAgent}
if opts.GCPHealthChecks {
healthCheckPaths = append(healthCheckPaths, "/liveness_check", "/readiness_check")
healthCheckUserAgents = append(healthCheckUserAgents, "GoogleHC/1.0")
}
// To silence logging of health checks, register the health check handler before
// the logging handler
if opts.Logging.SilencePing {
chain = chain.Append(middleware.NewHealthCheck(healthCheckPaths, healthCheckUserAgents), LoggingHandler)
} else {
chain = chain.Append(LoggingHandler, middleware.NewHealthCheck(healthCheckPaths, healthCheckUserAgents))
}
s := &Server{
Handler: chain.Then(oauthproxy),
Opts: opts,
stop: make(chan struct{}, 1),
}
// Observe signals in background goroutine.
go func() {
sigint := make(chan os.Signal, 1)
signal.Notify(sigint, os.Interrupt, syscall.SIGTERM)
<-sigint
s.stop <- struct{}{} // notify having caught signal
}()
s.ListenAndServe()
}