eric

#!/bin/bash

set -e

USERNAME=
TOKEN=
METRIC=
SLEEP=5

probe() {

eric

diff -ur zkc-3.4.5-orig/c/src/zookeeper.c zkc-3.4.5/c/src/zookeeper.c
--- zkc-3.4.5-orig/c/src/zookeeper.c  2012-09-30 10:53:32.000000000 -0700
+++ zkc-3.4.5/c/src/zookeeper.c	2013-09-07 21:25:24.000000000 -0700
@@ -1650,14 +1650,16 @@
         // a PING
         if (zh->state==ZOO_CONNECTED_STATE) {
             send_to = zh->recv_timeout/3 - idle_send;
-            if (send_to <= 0 && zh->sent_requests.head==0) {
-//                LOG_DEBUG(("Sending PING to %s (exceeded idle by %dms)",
-//                                format_current_endpoint_info(zh),-send_to));

eric

require 'zookeeper'
require 'zk-server'
require 'fileutils'
require 'tmpdir'

SLEEP_TIME = 30
STDOUT.sync = true

if ENV['DEBUG']
  def zookeeper_logger(from)

eric

  describe :child_watcher_behavior do
    describe :async_watch, :async => true do
      it_should_behave_like "all success return values"

      before do
        @watcher = Zookeeper::Callbacks::WatcherCallback.new
        @cb = Zookeeper::Callbacks::StringsCallback.new

        @rv = zk.get_children(:path => path, :watcher => @watcher, :watcher_context => path, :callback => @cb, :callback_context => path)
        wait_until { @cb.completed? }

eric

(def levels {:trace org.apache.log4j.Level/TRACE
             :debug org.apache.log4j.Level/DEBUG
             :info  org.apache.log4j.Level/INFO
             :warn  org.apache.log4j.Level/WARN
             :error org.apache.log4j.Level/ERROR
             :fatal org.apache.log4j.Level/FATAL})

(defn set-level
  "Set the level for the given logger, by string name. Use:
  (set-level \"skuld.node\", :debug)"

eric

Sentry and the JVM

Unfortunately Java's built-in cacerts do not include StartCom SSL root certificates.

Because of this, you must tell java to trust these certificates.

The easiest way I've found to do it is as follows:

1. Make a copy of the JRE cacerts

eric

Get metrics from codahale/metrics in realtime.

Requires obfuscurity/tasseo#64

eric

// Originally from:
//  * http://blog.stephenboak.com/2011/08/07/easy-as-a-pie.html
//  * http://jsfiddle.net/stephenboak/hYuPb/
//
// Improved by Eric Lindvall to be more d3-ish

function donutChart() {
  var width = 450;
  var height = 300;
  var radius = 100;

eric

reader: zookeeper: initiating connection to localhost:2181
reader: zookeeper: #zkc_set_running_and_notify!
reader: zookeeper: #event_thread_body starting event thread
reader: zookeeper: init returned!
reader: zookeeper: event_thread waiting until running: true
reader: zookeeper: event_thread running: true
zookeeper_server: Accepted socket connection from /fe80:0:0:0:0:0:0:1%1:54365
zookeeper_server: Accepted socket connection from /127.0.0.1:54366
zookeeper_server: Session establishment request from client /fe80:0:0:0:0:0:0:1%1:54365 client's lastZxid is 0x0
zookeeper_server: Connection request from old client /fe80:0:0:0:0:0:0:1%1:54365; will be dropped if server is in r-o mode

eric

# from https://github.com/slyphon/zk/issues/68

require 'zk'

ZK_PATH = '/test/path/child'
CHILD_PATH = ZK_PATH + '/foo'
SLEEP_TIME = 1

class Writer
  def initialize(start_signal, finish_signal)