aleung’s gists

aleung / ApplicationContextDumper.java

Created November 8, 2011 06:41

Dump beans information in a Springframework application context. Licensed under WTFPL v2. More detail in blog post: http://aleung.github.io/blog/2011/11/08/Dump-beans-information-from-live-Spring-application-context/

	package leoliang.springtest;

	import java.util.HashMap;
	import java.util.Map;

	import org.springframework.beans.BeansException;
	import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
	import org.springframework.context.ApplicationContext;
	import org.springframework.context.ApplicationContextAware;
	import org.springframework.context.support.AbstractRefreshableApplicationContext;

aleung / HttpServer.java

Created November 8, 2011 13:47

Tiny HTTP Server by Java, only supports GET method.

	import java.io.BufferedReader;
	import java.io.File;
	import java.io.FileInputStream;
	import java.io.FileNotFoundException;
	import java.io.IOException;
	import java.io.InputStream;
	import java.io.InputStreamReader;
	import java.io.OutputStream;
	import java.net.ServerSocket;
	import java.net.Socket;

aleung / applicationContext.xml

Created June 15, 2012 04:00

Spring bean reference injection definition by external configuration.

	<?xml version="1.0" encoding="UTF-8"?>
	<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns:context="http://www.springframework.org/schema/context"
	xsi:schemaLocation="
	http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd
	http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd"
	default-autowire="byType">

	<context:property-placeholder location="file:bin/leoliang/spring/test1/bean.properties"/>

aleung / pom.xml

Last active May 21, 2021 10:50

	<project
	xmlns="http://maven.apache.org/POM/4.0.0"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
	<modelVersion>4.0.0</modelVersion>
	<groupId>com.mycompany</groupId>
	<artifactId>localrepodeployer</artifactId>
	<packaging>jar</packaging>
	<version>1.0.0</version>

aleung / clean_aged_artifacts.rb

Last active April 24, 2017 18:07

Clean up unused (long time no download) artifacts from Artifactory repository. See: http://aleung.github.com/blog/2013/03/22/clean-aged-artifacts-from-artifactory/

	#!/bin/env ruby

	# --- Configuration ---------------------------------

	# Remove artifacts which were created before $age_days ago and haven't been downloaded in recent $age_days.
	$age_days = 730

	# The repository to be cleaned.
	$repo = 'repository-key'

aleung / remove_conflict_non_unique_snapshots.rb

Created March 28, 2013 04:05

I have Maven (Artifactory) repository which was configured to store non-unique snapshots. When the configure was changed to store unique (with time-stamp) snapshots, if a new snapshot is deployed, there will be both unique snapshot and non-unique snapshot artifact of same version exists. If it happens, the snapshot artifact will be unable to dow…

	#!/bin/env ruby

	# --- Configuration ---------------------------------

	$age_days = 3

	# The repository to be cleaned.
	$repo = 'repo-name'

	$user = 'repo-admin'

aleung / Scheduler

Created May 27, 2013 10:48

A simple Java scheduler, which execute scheduled tasks in current thread.

	package leoliang.common;

	import com.google.common.base.Preconditions;

	/**
	* Usage example: Run 15 times in every 250ms, begins at 5 seconds later.
	*
	* <pre>
	Scheduler.every(250, Scheduler.TimeUnit.MILLISECOND)
	.beginsAt(System.currentTimeMillis() + 5000)

aleung / ActiveCountMetric.java

Created November 26, 2013 09:12

Invocation metric bases on codahale (Yammer) Metrics. 这是在Messaging性能测试时使用的metrics，记录了代码块调用的throughput（TPS，latency）和active count（并发数），数据每分钟写入csv格式文件。用try + finally的方式对调用进行拦截检测，代码有侵入性。当时是测试使用，这样写起来最快。

	public interface ActiveCountMetric {
	void inc();
	void dec();
	}

aleung / ipaddr.es

Last active November 5, 2015 03:43

Get local IP address of specific NIC in node.js

	var _ = require('lodash');
	var os = require('os');

	function getIpAddr(nicName) {
	let ifaces = os.networkInterfaces();
	let iface = _.find(ifaces[nicName], iface => { return iface.family === 'IPv4' });
	return _.result(iface, 'address');
	}

	module.exports = _.memoize(getIpAddr);

aleung / mergelog.js

Created November 2, 2016 11:30

Merge consul agent logs which are fetched by Ansible

	#!/usr/bin/env node

	"use strict";

	const fs = require('fs');
	const readline = require('readline');

	const logLineRegexp = /\s+(.+?)\[(.+?)\](.*)/;

	function processFile(file, host) {

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