aggregate connection details table

List Local and Remote endpoints for each TCP connection on the node.

report/id.go

@@ -103,6 +103,17 @@ func ParseNodeID(nodeID string) (hostID string, remainder string, ok bool) {
 	return fields[0], fields[1], true
 }
 
+// ParseEndpointNodeID produces the host ID, address, and port and remainder
+// (typically an address) from an endpoint node ID. Note that hostID may be
+// blank.
+func ParseEndpointNodeID(endpointNodeID string) (hostID, address, port string, ok bool) {
+	fields := strings.SplitN(endpointNodeID, ScopeDelim, 3)
+	if len(fields) != 3 {
+		return "", "", "", false
+	}
+	return fields[0], fields[1], fields[2], true
+}
+
 // ExtractHostID extracts the host id from NodeMetadata
 func ExtractHostID(m NodeMetadata) string {
 	hostid, _, _ := ParseNodeID(m[HostNodeID])

report/id_test.go

@@ -75,6 +75,42 @@ func TestAdjacencyID(t *testing.T) {
 	}
 }
 
+func TestEndpointNodeID(t *testing.T) {
+	for _, bad := range []string{
+		clientAddressNodeID,
+		serverAddressNodeID,
+		unknownAddressNodeID,
+		clientHostNodeID,
+		serverHostNodeID,
+		"host.com;1.2.3.4",
+		"a;b",
+		"a;",
+		";b",
+		";",
+		"",
+	} {
+		if haveName, haveAddress, havePort, ok := report.ParseEndpointNodeID(bad); ok {
+			t.Errorf("%q: expected failure, but got {%q, %q, %q}", bad, haveName, haveAddress, havePort)
+		}
+	}
+
+	for input, want := range map[string]struct{ name, address, port string }{
+		report.MakeEndpointNodeID("host.com", "1.2.3.4", "c"): {"", "1.2.3.4", "c"},
+		"a;b;c": {"a", "b", "c"},
+	} {
+		haveName, haveAddress, havePort, ok := report.ParseEndpointNodeID(input)
+		if !ok {
+			t.Errorf("%q: not OK", input)
+			continue
+		}
+		if want.name != haveName ||
+			want.address != haveAddress ||
+			want.port != havePort {
+			t.Errorf("%q: want %q, have {%q, %q, %q}", input, want, haveName, haveAddress, havePort)
+		}
+	}
+}
+
 func TestEdgeID(t *testing.T) {
 	for _, bad := range []string{
 		client54001EndpointNodeID,