Rearrange the loader logging statements.

I want the pid included - it makes debugging easier. So I need to wait
until the process starts.

pcap/loader.go

@@ -1207,15 +1207,15 @@ func (c *Loader) loadPcapAsync(row int, cb interface{}) {
 			return
 		}
 
-		log.Infof("Starting PDML command: %v", c.PdmlCmd)
-
 		err = c.PdmlCmd.Start()
 		if err != nil {
 			err = fmt.Errorf("Error starting PDML process %v: %v", c.PdmlCmd, err)
 			HandleError(err, cb)
 			return
 		}
 
+		log.Infof("Started PDML command %v with pid %d", c.PdmlCmd, c.PdmlCmd.Pid())
+
 		defer func() {
 			c.PdmlCmd.Wait()
 		}()
@@ -1327,8 +1327,6 @@ func (c *Loader) loadPcapAsync(row int, cb interface{}) {
 			return
 		}
 
-		log.Infof("Starting pcap command: %v", c.PcapCmd)
-
 		err = c.PcapCmd.Start()
 		if err != nil {
 			// e.g. on the pi
@@ -1337,6 +1335,8 @@ func (c *Loader) loadPcapAsync(row int, cb interface{}) {
 			return
 		}
 
+		log.Infof("Started pcap command %v with pid %d", c.PcapCmd, c.PcapCmd.Pid())
+
 		defer func() {
 			c.PcapCmd.Wait()
 		}()
@@ -1681,8 +1681,6 @@ func (c *Loader) loadPsmlAsync(cb interface{}) {
 		return
 	}
 
-	log.Infof("Starting PSML command: %v", c.PsmlCmd)
-
 	err = c.PsmlCmd.Start()
 	if err != nil {
 		err = fmt.Errorf("Error starting PSML command %v: %v", c.PsmlCmd, err)
@@ -1691,6 +1689,8 @@ func (c *Loader) loadPsmlAsync(cb interface{}) {
 		return
 	}
 
+	log.Infof("Started PSML command %v with pid %d", c.PsmlCmd, c.PsmlCmd.Pid())
+
 	defer func() {
 		// These need to close so the tailreader Read() terminates so that the
 		// PsmlCmd.Wait() below completes.

streams/loader.go

@@ -120,8 +120,6 @@ func (c *Loader) loadStreamReassemblyAsync(pcapf string, proto string, idx int,
 
 	c.streamCmd = c.cmds.Stream(pcapf, proto, idx)
 
-	log.Infof("Starting stream reassembly command: %v", c.streamCmd)
-
 	streamOut, err := c.streamCmd.StdoutReader()
 	if err != nil {
 		pcap.HandleError(err, cb)
@@ -140,6 +138,8 @@ func (c *Loader) loadStreamReassemblyAsync(pcapf string, proto string, idx int,
 		return
 	}
 
+	log.Infof("Started stream reassembly command %v with pid %d", c.streamCmd, c.streamCmd.Pid())
+
 	defer func() {
 		err = c.streamCmd.Wait() // it definitely started, so we must wait
 		if !c.SuppressErrors && err != nil {
@@ -188,8 +188,6 @@ func (c *Loader) startStreamIndexerAsync(pcapf string, proto string, idx int, ap
 
 	c.indexerCmd = c.cmds.Indexer(pcapf, proto, idx)
 
-	log.Infof("Starting stream indexer command: %v", c.indexerCmd)
-
 	streamOut, err := c.indexerCmd.StdoutReader()
 	if err != nil {
 		pcap.HandleError(err, cb)
@@ -209,6 +207,8 @@ func (c *Loader) startStreamIndexerAsync(pcapf string, proto string, idx int, ap
 		return
 	}
 
+	log.Infof("Started stream indexer command %v with pid %d", c.indexerCmd, c.indexerCmd.Pid())
+
 	defer func() {
 		err = c.indexerCmd.Wait() // it definitely started, so we must wait
 		if !c.SuppressErrors && err != nil {