From e3f42cbc20ecec8b4e0ed8d453d12ae31197a1d6 Mon Sep 17 00:00:00 2001
From: Martin Alexander Neumann <mneumann@teco.edu>
Date: Sat, 11 Apr 2020 20:45:28 +0200
Subject: [PATCH 1/4] Allow config.defaultStorageLimit to be zero bytes

---
 lib/historyKeeper.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/historyKeeper.js b/lib/historyKeeper.js
index f70dba006..1fc2a2f2f 100644
--- a/lib/historyKeeper.js
+++ b/lib/historyKeeper.js
@@ -98,7 +98,7 @@ module.exports.create = function (config, cb) {
     paths.staging = keyOrDefaultString('blobStagingPath', './blobstage');
     paths.blob = keyOrDefaultString('blobPath', './blob');
 
-    Env.defaultStorageLimit = typeof(config.defaultStorageLimit) === 'number' && config.defaultStorageLimit > 0?
+    Env.defaultStorageLimit = typeof(config.defaultStorageLimit) === 'number' && config.defaultStorageLimit >= 0?
         config.defaultStorageLimit:
         Core.DEFAULT_LIMIT;
 

From ca2dc85b3407d63d5fc4b24e55e557ef02479a0c Mon Sep 17 00:00:00 2001
From: ansuz <ansuz@transitiontech.ca>
Date: Tue, 14 Apr 2020 15:17:41 -0400
Subject: [PATCH 2/4] reduce eye-bleed with gentler styles for mermaid charts

---
 www/common/diffMarked.js | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/www/common/diffMarked.js b/www/common/diffMarked.js
index f53828e17..0f0e4a092 100644
--- a/www/common/diffMarked.js
+++ b/www/common/diffMarked.js
@@ -23,8 +23,17 @@ define([
         init: function () {}
     };
 
+    var mermaidThemeCSS = ".node rect { fill: #DDD; stroke: #AAA; } " +
+        "rect.task, rect.task0, rect.task2 { stroke-width: 1 !important; rx: 0 !important; } " +
+        "g.grid g.tick line { opacity: 0.25; }" +
+        "g.today line { stroke: red; stroke-width: 1; stroke-dasharray: 3; opacity: 0.5; }";
+
     require(['mermaid', 'css!/code/mermaid-new.css'], function (_Mermaid) {
         Mermaid = _Mermaid;
+        Mermaid.initialize({
+            gantt: { axisFormat: '%m-%d', },
+            "themeCSS": mermaidThemeCSS,
+        });
     });
 
     var highlighter = function () {

From 9a7681dc5d6f157e8a99af324cd32c29ddf7474e Mon Sep 17 00:00:00 2001
From: ansuz <ansuz@transitiontech.ca>
Date: Tue, 14 Apr 2020 15:18:20 -0400
Subject: [PATCH 3/4] add a note about handling syntax errors in mermaid

---
 www/common/diffMarked.js | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/www/common/diffMarked.js b/www/common/diffMarked.js
index 0f0e4a092..c964ee63e 100644
--- a/www/common/diffMarked.js
+++ b/www/common/diffMarked.js
@@ -360,6 +360,12 @@ define([
             // retrieve the attached source code which it was drawn
             var src = el.getAttribute('mermaid-source');
 
+/*  The new source might have syntax errors that will prevent rendering.
+    It might be preferable to keep the existing state instead of removing it
+    if you don't have something better to display. Ideally we should display
+    the cause of the syntax error so that the user knows what to correct.  */
+            //if (!Mermaid.parse(src)) { } // TODO
+
             // check if that source exists in the set of charts which are about to be rendered
             if (mermaid_source.indexOf(src) === -1) {
                 // if it's not, then you can remove it

From 74567e0cf4e90f7abaa5e75ea647e965e3bd331f Mon Sep 17 00:00:00 2001
From: ansuz <ansuz@transitiontech.ca>
Date: Tue, 14 Apr 2020 15:53:58 -0400
Subject: [PATCH 4/4] return process memory usage in GET CACHE STATS RPC

---
 lib/commands/admin-rpc.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/commands/admin-rpc.js b/lib/commands/admin-rpc.js
index ed1d5b8a4..db2413518 100644
--- a/lib/commands/admin-rpc.js
+++ b/lib/commands/admin-rpc.js
@@ -50,6 +50,7 @@ var getCacheStats = function (env, server, cb) {
         metaSize: metaSize,
         channel: channelCount,
         channelSize: channelSize,
+        memoryUsage: process.memoryUsage(),
     });
 };