From ce648ee80f9168800961f8242fa6194653f6e002 Mon Sep 17 00:00:00 2001
From: TheBigHNF <henry@boundary.com>
Date: Tue, 24 Feb 2015 13:50:18 -0600
Subject: [PATCH] Added LUA version of plugin

---
 init.lua    | 36 ++++++++++++++++++++++++++++++++++++
 param.json  |  3 +++
 plugin.json | 26 ++++++++++++++++++++++----
 3 files changed, 61 insertions(+), 4 deletions(-)
 create mode 100755 init.lua
 create mode 100755 param.json

diff --git a/init.lua b/init.lua
new file mode 100755
index 0000000..9d9ca65
--- /dev/null
+++ b/init.lua
@@ -0,0 +1,36 @@
+local os = require 'os'
+local boundary = require 'boundary'
+local timer = require 'timer'
+
+local param = boundary.param
+
+local source = param.source or os.hostname()
+local interval = param.pollInterval or 1000;
+
+local last_cpus = nil
+
+timer.setInterval(interval, function()
+  local cpus = os.cpus()
+
+  for _, cpu in ipairs(cpus) do
+    cpu.total = 0
+
+    for name, value in pairs(cpu.times) do
+      cpu.total = cpu.total + value
+    end
+  end
+
+  if last_cpus then
+    for idx, cpu in ipairs(cpus) do
+      local last_cpu = last_cpus[idx]
+
+      local user = (cpu.times.user - last_cpu.times.user) / (cpu.total - last_cpu.total)
+
+      if user == user then
+        print(string.format("CPU_CORE %f %s-C%d", user, source, idx))
+      end
+    end
+  end
+
+  last_cpus = cpus
+end)
diff --git a/param.json b/param.json
new file mode 100755
index 0000000..2469a08
--- /dev/null
+++ b/param.json
@@ -0,0 +1,3 @@
+{
+	"pollInterval" : 1000
+}
diff --git a/plugin.json b/plugin.json
index 9fdb780..540193a 100644
--- a/plugin.json
+++ b/plugin.json
@@ -1,7 +1,25 @@
 {
     "description" : "Provides per core CPU utilization",
-	"command" : "node index.js $(pollInterval)",
-	"metrics" : ["CPU_CORE"],
-	"postExtract" : "npm install",
-	"ignore" : "node_modules"
+    "command" : "node index.js $(pollInterval)",
+    "command_lua" : "boundary-meter init.lua",
+    "postExtract" : "npm install",
+    "postExtract_lua" : "",
+    "ignore" : "node_modules",
+    "metrics" : ["CPU_CORE"],
+    "paramSchema": [
+	{
+	    "title": "Poll Interval",
+	    "name": "pollInterval",
+	    "description": "How often (in milliseconds) to poll the system for metrics (default: 1000).",
+	    "type" : "integer",
+	    "default" : 1000,
+	    "required" : false
+	},
+	{
+	    "title" : "Source",
+	    "name" : "source",
+	    "description" : "The Source to display in the legend for the CPU Core data.  It will default to the hostname of the server",
+	    "type" : "string"
+	}
+    ]
 }