Amazon IP Ranges

Need to get IP ranges for whitelisting AWS? Here is a handy service.

https://ip-ranges.amazonaws.com/ip-ranges.json

Installing Amazon Web Service Plugin for ElasticSearch

https://www.elastic.co/guide/en/elasticsearch/plugins/current/cloud-aws.html

The Amazon Web Service (AWS) Cloud plugin uses the AWS API for unicast discovery, and adds support for using S3 as a repository for Snapshot/Restore.

Installationedit

This plugin can be installed using the plugin manager:

sudo bin/plugin install cloud-aws

-> Installing repository-s3...
Trying https://download.elastic.co/elasticsearch/release/org/elasticsearch/plugin/repository-s3/2.3.1/repository-s3-2.3.1.zip ...
ERROR: failed to download out of all possible locations..., use --verbose to get detailed information
# bin/plugin install cloud-aws
-> Installing cloud-aws...
Trying https://download.elastic.co/elasticsearch/release/org/elasticsearch/plugin/cloud-aws/2.3.1/cloud-aws-2.3.1.zip ...
Downloading .............................................................................................................................................................................................................................................................................................................................................DONE
Verifying https://download.elastic.co/elasticsearch/release/org/elasticsearch/plugin/cloud-aws/2.3.1/cloud-aws-2.3.1.zip checksums if available ...
Downloading .DONE
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@     WARNING: plugin requires additional permissions     @
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
* java.lang.RuntimePermission getClassLoader
See http://docs.oracle.com/javase/8/docs/technotes/guides/security/permissions.html
for descriptions of what these permissions allow and the associated risks.

Continue with installation? [y/N]y
Installed cloud-aws into /usr/share/elasticsearch/plugins/cloud-aws
# service elasticsearch restart
[....] Stopping Elasticsearch Server:

Spring Boot CORS Not Working?

For the life of me I could not get the CORS Configuration for Spring Boot to write the needed headers to the response. I wrote my own filter that could read the CORS Config and used it in WebMVC Configuration to solve it.

	package com.dronze.app;
	import com.dronze.filter.CorsFilter;
	import org.springframework.beans.factory.annotation.Value;
	import org.springframework.boot.autoconfigure.web.DispatcherServletAutoConfiguration;
	import org.springframework.boot.context.embedded.EmbeddedServletContainerFactory;
	import org.springframework.boot.context.embedded.FilterRegistrationBean;
	import org.springframework.boot.context.embedded.ServletRegistrationBean;
	import org.springframework.boot.context.embedded.jetty.JettyEmbeddedServletContainerFactory;
	import org.springframework.context.annotation.Bean;
	import org.springframework.context.annotation.ComponentScan;
	import org.springframework.context.annotation.Configuration;
	import org.springframework.context.annotation.PropertySource;
	import org.springframework.web.cors.CorsConfiguration;
	import org.springframework.web.cors.UrlBasedCorsConfigurationSource;
	import org.springframework.web.servlet.DispatcherServlet;
	/**
	* Created by claytongraham on 10/25/15.
	*/
	@Configuration
	@ComponentScan(basePackages = {"com.dronze"})
	@PropertySource("classpath:/application-${dronze.env:dev}.properties")
	public class AppConfig {
	@Bean
	public EmbeddedServletContainerFactory servletContainer() {
	JettyEmbeddedServletContainerFactory server = new JettyEmbeddedServletContainerFactory();
	return server;
	}
	@Bean
	public DispatcherServlet dispatcherServlet() {
	return new DispatcherServlet();
	}
	@Bean
	public ServletRegistrationBean dispatcherServletRegistration() {
	ServletRegistrationBean registration = new ServletRegistrationBean(
	dispatcherServlet(), "/rest/api/*");
	registration.setName(DispatcherServletAutoConfiguration.DEFAULT_DISPATCHER_SERVLET_REGISTRATION_BEAN_NAME);
	return registration;
	}
	@Bean
	public FilterRegistrationBean corsFilter() {
	UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
	CorsConfiguration config = new CorsConfiguration();
	config.setAllowCredentials(true);
	config.addAllowedOrigin("*");
	config.addAllowedHeader("Content-Type");
	config.addAllowedMethod("OPTIONS");
	config.addAllowedMethod("GET");
	config.addAllowedMethod("PUT");
	config.addAllowedMethod("POST");
	config.addAllowedMethod("DELETE");
	source.registerCorsConfiguration("/**", config);
	final FilterRegistrationBean bean = new FilterRegistrationBean(new CorsFilter(source));
	bean.setOrder(0);
	return bean;
	}
	}

view raw AppConfig.java hosted with ❤ by GitHub

	package com.dronze.filter;
	/**
	* Custom Filter Created by claytongraham on 4/19/16.
	*/
	import com.amazonaws.util.StringUtils;
	import org.springframework.http.HttpHeaders;
	import org.springframework.util.Assert;
	import org.springframework.web.cors.*;
	import org.springframework.web.filter.OncePerRequestFilter;
	import java.io.*;
	import javax.servlet.*;
	import javax.servlet.http.*;
	import java.util.*;
	public class CorsFilter extends OncePerRequestFilter {
	public static final String CUSTOM_ALLOW_CORS_HEADER = "Accept-Cors-Requests-Origin";
	private CorsProcessor processor = new DefaultCorsProcessor();
	private final CorsConfigurationSource configSource;
	/**
	* Constructor accepting a {@link CorsConfigurationSource} used by the filter to find
	* the {@link org.springframework.web.cors.CorsConfiguration} to use for each incoming request.
	* @see org.springframework.web.cors.UrlBasedCorsConfigurationSource
	*/
	public CorsFilter(CorsConfigurationSource configSource) {
	this.configSource = configSource;
	}
	/**
	* Configure a custom {@link CorsProcessor} to use to apply the matched
	* {@link org.springframework.web.cors.CorsConfiguration} for a request.
	* <p>By default {@link DefaultCorsProcessor} is used.
	*/
	public void setCorsProcessor(CorsProcessor processor) {
	Assert.notNull(processor, "CorsProcessor must not be null");
	this.processor = processor;
	}
	public static boolean isCorsRequest(HttpServletRequest request) {
	return (!StringUtils.isNullOrEmpty(request.getHeader(HttpHeaders.ORIGIN)));
	}
	private String getCSVList(List<String> items){
	String[] array = (String[])items.toArray(new String[items.size()]);
	return StringUtils.join(",", array);
	}
	@Override
	protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response,
	FilterChain filterChain) throws ServletException, IOException {
	CorsConfiguration corsConfiguration = configSource.getCorsConfiguration(request);
	if(isCorsRequest(request)){
	response.addHeader("Access-Control-Allow-Origin", getCSVList(corsConfiguration.getAllowedOrigins()));
	response.addHeader("Access-Control-Allow-Headers", getCSVList(corsConfiguration.getAllowedHeaders()));
	response.addHeader("Access-Control-Allow-Methods", getCSVList(corsConfiguration.getAllowedMethods()));
	}
	filterChain.doFilter(request, response);
	}
	}

view raw CorsFilter.java hosted with ❤ by GitHub

Find Recursively With LS

This should probably be turned into a script.

	[claytongraham@Claytons-MacBook-Pro dronze]$ find . -name '*.jar' -exec ls -lah {} \;
	-rw-r--r-- 1 claytongraham staff 261B Apr 16 11:39 ./build/libs/dronze-1.0.jar
	-rw-r--r-- 1 claytongraham staff 51K Apr 6 21:13 ./dronze-app/gradle/wrapper/gradle-wrapper.jar
	-rw-r--r-- 1 claytongraham staff 50K Apr 16 11:39 ./dronze-cicd/build/libs/dronze-cicd.jar
	-rw-r--r-- 1 claytongraham staff 51K Apr 6 21:13 ./dronze-cicd/gradle/wrapper/gradle-wrapper.jar
	-rw-r--r-- 1 claytongraham staff 261B Apr 16 11:39 ./dronze-config/build/libs/dronze-config-0.3.1-SNAPSHOT.jar
	-rw-r--r-- 1 claytongraham staff 51K Apr 6 21:13 ./dronze-config/gradle/wrapper/gradle-wrapper.jar
	-rw-r--r-- 1 claytongraham staff 51K Apr 6 21:13 ./gradle/wrapper/gradle-wrapper.jar

view raw findwls.bash hosted with ❤ by GitHub

Rsync Without Git

Just add an explicit exclude for .git:

rsync -a --exclude='.git/' --include='*.c' --include='*.sh' --include='*/' --exclude='*' ~/c/ ~/Dropbox/Public/c

Another option is to create ~/.cvsignore containing the following line along with any other directories you'd like to exclude:

.git/