add collector feature

dump the update messages and the state change of peers into influxdb:

[collector.config]
  url = "http://localhost:8086"
  db-name = "gobgp"

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>

1 files changed, 7 insertions, 0 deletions

diff --git a/table/path.go b/table/path.go
index 3742970f..a4fc4e43 100644
--- a/table/path.go
+++ b/table/path.go
@@ -826,6 +826,13 @@ func (path *Path) GetClusterList() []net.IP {
 	return nil
 }
 
+func (path *Path) GetOrigin() (uint8, error) {
+	if attr := path.getPathAttr(bgp.BGP_ATTR_TYPE_ORIGIN); attr != nil {
+		return attr.(*bgp.PathAttributeOrigin).Value[0], nil
+	}
+	return 0, fmt.Errorf("no origin path attr")
+}
+
 func (lhs *Path) Equal(rhs *Path) bool {
 	return lhs == rhs
 }