From e6ec891d9a8d31be2a05a8198fe96d4721c62edd Mon Sep 17 00:00:00 2001
From: ansuz <ansuz@transitiontech.ca>
Date: Mon, 30 Mar 2020 18:26:04 -0400
Subject: [PATCH] improve admin rpc for diagnosing memory used by the cache

---
 lib/commands/admin-rpc.js | 30 ++++++++++++++++++++++--------
 1 file changed, 22 insertions(+), 8 deletions(-)

diff --git a/lib/commands/admin-rpc.js b/lib/commands/admin-rpc.js
index 32e9b9947..ed1d5b8a4 100644
--- a/lib/commands/admin-rpc.js
+++ b/lib/commands/admin-rpc.js
@@ -20,22 +20,36 @@ var getFileDescriptorLimit = function (env, server, cb) {
 };
 
 var getCacheStats = function (env, server, cb) {
+    var metaSize = 0;
+    var channelSize = 0;
     var metaCount = 0;
     var channelCount = 0;
 
-    var meta = env.metadata_cache;
-    for (var x in meta) {
-        if (meta.hasOwnProperty(x)) { metaCount++; }
-    }
-
-    var channels = env.channel_cache;
-    for (var y in channels) {
-        if (channels.hasOwnProperty(y)) { channelCount++; }
+    try {
+        var meta = env.metadata_cache;
+        for (var x in meta) {
+            if (meta.hasOwnProperty(x)) {
+                metaCount++;
+                metaSize += JSON.stringify(meta[x]).length;
+            }
+        }
+
+        var channels = env.channel_cache;
+        for (var y in channels) {
+            if (channels.hasOwnProperty(y)) {
+                channelCount++;
+                channelSize += JSON.stringify(channels[y]).length;
+            }
+        }
+    } catch (err) {
+        return void cb(err && err.message);
     }
 
     cb(void 0, {
         metadata: metaCount,
+        metaSize: metaSize,
         channel: channelCount,
+        channelSize: channelSize,
     });
 };