feat(router): improve log output.

Author: aledbf

router/parent/Dockerfile

@@ -9,6 +9,7 @@ RUN DOCKER_BUILD=true /go/src/github.com/deis/deis/router/build.sh
 RUN tar -C /opt/nginx -czf /nginx.tgz .
 
 ADD boot.go /go/src/github.com/deis/deis/router/boot.go
+ADD logger/stdout_formatter.go /go/src/github.com/deis/deis/router/logger/stdout_formatter.go
 
 RUN go get
 

router/parent/boot.go

@@ -13,6 +13,8 @@ import (
 	"github.com/ActiveState/tail"
 	"github.com/Sirupsen/logrus"
 	"github.com/coreos/go-etcd/etcd"
+
+	"github.com/deis/deis/router/logger"
 )
 
 var log = logrus.New()
@@ -26,6 +28,8 @@ const (
 )
 
 func main() {
+	log.Formatter = new(logger.StdOutFormatter)
+
 	logLevel := getopt("LOG", "info")
 	if level, err := logrus.ParseLevel(logLevel); err == nil {
 		log.Level = level

router/parent/logger/stdout_formatter.go

@@ -0,0 +1,18 @@
+package logger
+
+import (
+	"bytes"
+	"fmt"
+	"strings"
+
+	"github.com/Sirupsen/logrus"
+)
+
+type StdOutFormatter struct {
+}
+
+func (f *StdOutFormatter) Format(entry *logrus.Entry) ([]byte, error) {
+	b := &bytes.Buffer{}
+	fmt.Fprintf(b, "[%s] - %s\n", strings.ToUpper(entry.Level.String()), entry.Message)
+	return b.Bytes(), nil
+}

router/templates/nginx.conf

@@ -33,8 +33,10 @@ http {
     {{ end }}
     client_max_body_size {{ or (.deis_router_bodySize) "1m" }};
 
+    log_format upstreaminfo '[$time_local] - $remote_addr - $remote_user - $status - "$request" - $bytes_sent - "$http_referer" - "$http_user_agent" - "$server_name" - $upstream_addr';
+    
     # send logs to STDOUT so they can be seen using 'docker logs'
-    access_log /opt/nginx/logs/access.log;
+    access_log /opt/nginx/logs/access.log upstreaminfo;
     error_log  /opt/nginx/logs/error.log;
 
     map $http_upgrade $connection_upgrade {