Lookup an arbitrary key over an admin endpoint

lib/admin-lookup-recvr.js

@@ -0,0 +1,26 @@
+// Copyright (c) 2015 Uber Technologies, Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+'use strict';
+
+module.exports = function recvAdminLookup(opts, callback) {
+    callback(null, null, {
+        dest: opts.ringpop.lookup(opts.key)
+    });
+};

lib/tchannel.js

@@ -22,6 +22,7 @@
 
 var recvAdminJoin = require('./admin-join-recvr.js');
 var recvAdminLeave = require('./admin-leave-recvr.js');
+var recvAdminLookup = require('./admin-lookup-recvr.js');
 var recvJoin = require('./swim/join-recvr.js');
 var recvPing = require('./swim/ping-recvr.js');
 var recvPingReq = require('./swim/ping-req-recvr.js');
@@ -36,6 +37,7 @@ var commands = {
     '/admin/debugClear': 'adminDebugClear',
     '/admin/gossip': 'adminGossip',
     '/admin/leave': 'adminLeave',
+    '/admin/lookup': 'adminLookup',
     '/admin/join': 'adminJoin',
     '/admin/reload': 'adminReload',
     '/admin/tick': 'adminTick',
@@ -94,6 +96,13 @@ RingPopTChannel.prototype.adminLeave = function adminLeave(arg1, arg2, hostInfo,
     }, cb);
 };
 
+RingPopTChannel.prototype.adminLookup = function adminLookup(arg1, arg2, hostInfo, cb) {
+    recvAdminLookup({
+        ringpop: this.ringpop,
+        key: arg2.toString()
+    }, cb);
+};
+
 RingPopTChannel.prototype.adminJoin = function (arg1, arg2, hostInfo, cb) {
     var body = safeParse(arg2.toString()) || {};