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/**
 * Example of Spring 4 Properties Java Configuration,
 *  with a Database Properties table to store most values
 *  and a small application.properties file too.
 * The Database table will take precedence over the properties file with this setup
 */
@Configuration
@PropertySource(value = { "classpath:application.properties" }, ignoreResourceNotFound=true)
public class SpringPropertiesConfig {
    private static final Logger log = LoggerFactory.getLogger(SpringPropertiesConfig.class);

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----- Interested Reads------
+ Interesting Read (Serverless Architecture of Acloud guru)
  https://read.acloud.guru/serverless-the-future-of-software-architecture-d4473ffed864
  
----- Getting Started-------
+ Requirements 
  + AWS Free Tier Account
  + PC with putty and putty keygen/ Mac
  + Optional
    + IoS/ Android App $20

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package com.example;

import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

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

@RestController
@RequestMapping("/api")

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import javax.validation.Constraint;
import javax.validation.Payload;
import java.lang.annotation.Retention;
import java.lang.annotation.Target;

import static java.lang.annotation.ElementType.FIELD;
import static java.lang.annotation.ElementType.PARAMETER;
import static java.lang.annotation.RetentionPolicy.RUNTIME;

/**

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How to Create Your YouTube API Credentials

https://vidible.zendesk.com/hc/en-us/articles/207036056-How-to-Create-Your-YouTube-API-Credentials

Creating your YouTube API Credentials is accomplished by performing to main stages:

Stage I - Creating a Google OAuth 2.0 Web application client.
Stage II - Creating a YouTube refresh token.

 

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// MyFilter.java
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
  OutputStream out = response.getOutputStream();
  ResponseWrapper wrapper = new ResponseWrapper((HttpServletResponse)response);
  
  chain.doFilter(request, wrapper);
  byte responseContent[] = wrapper.getData();
  
  // Write copied response, should change whatever you want in 'responseContent' before sending to client
  out.write(responseContent);

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    http.addFilterBefore(customAuthFilter(), SecurityContextPersistenceFilter.class)
            .authorizeRequests()
                .antMatchers("/**")
                .authenticated()
        .and()
            .exceptionHandling().disable()
            .sessionManagement().disable()
            .rememberMe().disable()
            .x509().disable()
            .headers().disable()

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@Configuration
@EnableWebMvcSecurity
public class WebSecurityConfig
    extends WebSecurityConfigurerAdapter {
    @Value("${oauth.check_token.url:http://localhost:3030/oauth/token/info}")
    private String checkTokenUrl;

    @Autowired @Qualifier("restTemplate")
    private RestOperations authRestTemplate;

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@Configuration
@EnableWebMvcSecurity
public class WebSecurityConfig
    extends WebSecurityConfigurerAdapter {
    @Value("${oauth.check_token.url:http://localhost:3030/oauth/token/info}")
    private String checkTokenUrl;

    @Autowired @Qualifier("restTemplate")
    private RestOperations authRestTemplate;

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package cz.monetplus.mac;

import static org.assertj.core.api.Assertions.assertThat;

import org.apache.commons.codec.binary.Hex;
import org.bouncycastle.crypto.BlockCipher;
import org.bouncycastle.crypto.Mac;
import org.bouncycastle.crypto.engines.DESEngine;
import org.bouncycastle.crypto.macs.ISO9797Alg3Mac;
import org.bouncycastle.crypto.params.KeyParameter;