Add import for 'important' headers.

Process and normalize some headers that will be used in quickly recalling
messages.

cmd/headers/headers.go

@@ -20,10 +20,19 @@ func insertHeaders(c *db.Conn, hash string, r io.Reader) error {
 	if err != nil {
 		return err
 	}
-	glog.Infoln("Insert", hash)
+	glog.Infoln("Insert headers", hash)
 	return c.InsertHeaders(hash, msg.Header)
 }
 
+func insertSearchHeaders(c *db.Conn, hash string, r io.Reader) error {
+	msg, err := mail.ReadMessage(r)
+	if err != nil {
+		return err
+	}
+	glog.Infoln("Insert search headers", hash)
+	return c.InsertSearchHeaders(hash, msg.Header)
+}
+
 func insertAllHeaders(c *db.Conn, all bool) error {
 	oCh := make(chan db.Original)
 	errc := make(chan error)
@@ -39,6 +48,31 @@ func insertAllHeaders(c *db.Conn, all bool) error {
 		case o := <-oCh:
 			r := bytes.NewReader(o.Blob)
 			if err := insertHeaders(c, o.Hash, r); err != nil {
+				glog.Errorln(o, "insertHeaders", err)
+				return err
+			}
+		case err := <-errc:
+			return err
+		}
+	}
+}
+
+func insertAllSearchHeaders(c *db.Conn, all bool) error {
+	oCh := make(chan db.Original)
+	errc := make(chan error)
+	donec := make(chan struct{})
+	defer close(donec)
+	if all {
+		go c.Originals(oCh, errc, donec)
+	} else {
+		go c.OriginalsNotInTable("search_header", oCh, errc, donec)
+	}
+	for {
+		select {
+		case o := <-oCh:
+			r := bytes.NewReader(o.Blob)
+			if err := insertSearchHeaders(c, o.Hash, r); err != nil {
+				glog.Errorln(o.Hash, "insertSearchHeaders", err)
 				return err
 			}
 		case err := <-errc:
@@ -60,4 +94,8 @@ func main() {
 		glog.Fatal(err)
 	}
 
+	if err := insertAllSearchHeaders(c, *all); err != nil {
+		glog.Fatal(err)
+	}
+
 }