Harmonize the log options between the forwarder and the server

Closes #11.

README.md

@@ -79,10 +79,14 @@ Usage of rcoredumpd: rcoredumpd [options]
         configuration file to load (default "/etc/rcoredump/rcoredumpd.conf")
   -dir string
         path of the directory to store data into (default "/var/lib/rcoredumpd")
+  -filelog string
+        path of the file to log into ("-" for stdout) (default "-")
   -go.analyzer string
         command to run to analyze Go core dumps (default "dlv core {{ .Executable }} {{ .Core }} --init {{ .Dir }}/delve.cmd")
   -index-type string
         type of index to use (values: bleve) (default "bleve")
+  -syslog
+        output logs to syslog
   -version
         print the version of rcoredumpd
 ```
@@ -96,9 +100,9 @@ Usage of rcoredump: rcoredump [options] <executable path> <timestamp of dump>
   -dest string
         address of the destination host (default "http://localhost:1105")
   -filelog string
-        path of the file to log into ('-' for stdout) (default "-")
+        path of the file to log into ("-" for stdout) (default "-")
   -src string
-        path of the coredump to send to the host ('-' for stdin) (default "-")
+        path of the coredump to send to the host ("-" for stdin) (default "-")
   -syslog
         output logs to syslog
   -version

bin/rcoredump/main.go

@@ -67,9 +67,9 @@ func (s *service) configure() {
 		fs.PrintDefaults()
 	}
 	fs.StringVar(&s.dest, "dest", "http://localhost:1105", "address of the destination host")
-	fs.StringVar(&s.src, "src", "-", "path of the coredump to send to the host ('-' for stdin)")
+	fs.StringVar(&s.src, "src", "-", "path of the coredump to send to the host (\"-\" for stdin)")
 	fs.BoolVar(&s.syslog, "syslog", false, "output logs to syslog")
-	fs.StringVar(&s.filelog, "filelog", "-", "path of the file to log into ('-' for stdout)")
+	fs.StringVar(&s.filelog, "filelog", "-", "path of the file to log into (\"-\" for stdout)")
 	fs.BoolVar(&s.printVersion, "version", false, "print the version of rcoredump")
 	fs.String("conf", "/etc/rcoredump/rcoredump.conf", "configuration file to load")
 	conf.Parse(fs, "conf")

bin/rcoredumpd/main.go

@@ -9,6 +9,7 @@ import (
 	"html/template"
 	"io"
 	"io/ioutil"
+	"log/syslog"
 	"net/http"
 	"os"
 	"os/signal"
@@ -56,6 +57,8 @@ func main() {
 type service struct {
 	// Configuration.
 	bind         string
+	syslog       bool
+	filelog      string
 	printVersion bool
 	indexType    string
 	blevePath    string
@@ -84,6 +87,8 @@ func (s *service) configure() {
 
 	// General options.
 	fs.StringVar(&s.bind, "bind", "localhost:1105", "address to listen to")
+	fs.BoolVar(&s.syslog, "syslog", false, "output logs to syslog")
+	fs.StringVar(&s.filelog, "filelog", "-", "path of the file to log into (\"-\" for stdout)")
 	fs.BoolVar(&s.printVersion, "version", false, "print the version of rcoredumpd")
 
 	// Index options.
@@ -112,7 +117,20 @@ func (s *service) init() (err error) {
 
 	// Logger
 	s.logger = log15.New()
-	s.logger.SetHandler(log15.StreamHandler(os.Stdout, log15.LogfmtFormat()))
+
+	format := log15.LogfmtFormat()
+	var handler log15.Handler
+	if s.syslog {
+		handler, err = log15.SyslogHandler(syslog.LOG_KERN, "rcoredumpd", format)
+	} else if s.filelog == "-" {
+		handler, err = log15.StreamHandler(os.Stdout, format), nil
+	} else {
+		handler, err = log15.FileHandler(s.filelog, format)
+	}
+	if err != nil {
+		return err
+	}
+	s.logger.SetHandler(handler)
 
 	// Data dir
 	s.logger.Debug("creating data directories")