From 066920b771c554dc853c966a96dbb980949d737d Mon Sep 17 00:00:00 2001
From: Tony Garnock-Jones <tonygarnockjones@gmail.com>
Date: Sun, 11 Nov 2018 13:59:01 +0000
Subject: [PATCH] Allow Dataspace subclasses to extend endpoint-addition
 behaviour

---
 packages/core/src/dataspace.js | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/packages/core/src/dataspace.js b/packages/core/src/dataspace.js
index 2cb2309..04635fb 100644
--- a/packages/core/src/dataspace.js
+++ b/packages/core/src/dataspace.js
@@ -238,6 +238,9 @@ Dataspace.prototype.unsubscribe = function (handler) {
   this.index.removeHandler(handler, handler.callback);
 };
 
+Dataspace.prototype.endpointHook = function (facet, endpoint) {
+};
+
 function Actor(dataspace, name, initialAssertions) {
   this.id = dataspace.nextId++;
   this.dataspace = dataspace;
@@ -554,7 +557,9 @@ Facet.prototype.addStopScript = function (s) {
 };
 
 Facet.prototype.addEndpoint = function (updateFun, isDynamic) {
-  return new Endpoint(this, isDynamic === void 0 ? true : isDynamic, updateFun);
+  const ep = new Endpoint(this, isDynamic === void 0 ? true : isDynamic, updateFun);
+  this.actor.dataspace.endpointHook(this, ep);
+  return ep;
 };
 
 Facet.prototype.addDataflow = function (subjectFun, priority) {