Jérémy Van de Wyngaert jeremyvdw

I've been working with Apache Kafka for over 7 years. I inevitably find myself doing the same set of activities while I'm developing or working with someone else's system. Here's a set of Kafka productivity hacks for doing a few things way faster than you're probably doing them now. 🔥

Show me all my Kafka topics and their partitions, replicas, and consumers
Show me the contents of a topic
Create a Kafka topic
Produce messages to a Kafka topic
Validate the schema of messages before producing to a topic
Do all of this at a distance

Get the tools

Note: These workarounds covered issues in lein-tools-deps 0.3.0-SNAPSHOT. If using 0.4.1 or later, you should not encounter the issues below.

The following provides some workarounds for some issues when using lein-tools-deps from Cursive on macOS.

Path to `clojure`

By default, the lein-tools-deps plugin won't see /usr/local/bin/clojure when Cursive processes project.clj, as it evidently has a degenerate path.

You will see an error like the following in the IntelliJ Event Log when it tries to process your project.clj file:

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It's now here, in The Programmer's Compendium. The content is the same as before, but being part of the compendium means that it's actively maintained.

Resources

Prereqs

These are for the combined vim-sexp (https://github.com/guns/vim-sexp) and vim-sexp-mappings-for-regular-people (https://github.com/tpope/vim-sexp-mappings-for-regular-people) plugins. vim-sexp is neat on its own but Tim Pope makes common stuff much easier.

Note that some vim-sexp functionality depends on <LocalLeader> mappings. This is a different leader key than the global leader, and is the variable maplocalleader (instead of mapleader). To see if you have this set, use :echo maplocalleader; if it errors out you'll need to set it, otherwise it will echo the key. If you want to set your LocalLeader to <Space>, you'll need two commands in your .vimrc, since by default <Space> is bound to <Right> in normal mode:

nnoremap <Space> <Nop>
let maplocalleader=" "

	(ns net.thegeez.advent.spec-parsing
	(:require [clojure.string :as str]
	[clojure.spec :as s]
	[clojure.spec.gen :as gen]
	[clojure.test.check.generators :as tgen]))
	;; Dependencies:
	;; [org.clojure/clojure "1.9.0-alpha14"]
	;; [org.clojure/test.check "0.9.0"]

	;; Advent of Code is a series of code challenges in the form of an advent

	--- Actions ---
	$Copy <M-C>
	$Cut <M-X> <S-Del>
	$Delete <Del> <BS> <M-BS>
	$LRU
	$Paste <M-V>
	$Redo <M-S-Z> <A-S-BS>
	$SearchWeb <A-S-G>
	$SelectAll <M-A>
	$Undo <M-Z>

	module Mongoid
	module Document
	def instantiate(attrs = nil, criteria_instance_id = nil)
	attributes = attrs \|\| {}
	doc = allocate
	doc.criteria_instance_id = criteria_instance_id
	doc.instance_variable_set(:@attributes, attributes)
	doc.apply_defaults
	IdentityMap.set(doc) if identity_map_set_possible?(criteria_instance_id)
	doc.run_callbacks(:initialize) unless doc._initialize_callbacks.empty?

	# Git pre-commit hook to check all staged Ruby (*.rb/haml/coffee) files
	# for Pry binding references
	#
	# Installation
	#
	# ln -s /path/to/pre-commit.sh /path/to/project/.git/hooks/pre-commit
	#
	# Based on
	#
	# http://codeinthehole.com/writing/tips-for-using-a-git-pre-commit-hook/

Jérémy Van de Wyngaert jeremyvdw

Get the tools

Path to `clojure`

This document has moved!

Resources

Prereqs

TOC

The introduction to Reactive Programming you've been missing

This tutorial as a series of videos

Jérémy Van de Wyngaert jeremyvdw

Get the tools

Path to clojure

This document has moved!

Resources

Prereqs

TOC

The introduction to Reactive Programming you've been missing

This tutorial as a series of videos

Path to `clojure`