daoas/daoadresseservice/ContextListener.java

package dk.daoas.daoadresseservice;

import javax.servlet.ServletContext;
import javax.servlet.ServletContextEvent;
import javax.servlet.ServletContextListener;
import javax.servlet.ServletRegistration;
import javax.servlet.annotation.WebListener;

import dk.daoas.daoadresseservice.admin.ServiceConfig;
import dk.thoerup.circuitbreaker.AccountingCircuitBreaker;
import dk.thoerup.circuitbreaker.CircuitBreakerManager;
import dk.thoerup.circuitbreaker.web.CircuitBreakerServletBase;
import dk.thoerup.webconfig.ConfigServlet;
import dk.thoerup.webconfig.ContextConfigLoader;

/**
 * Application Lifecycle Listener implementation class ContextListener
 *
 */
@WebListener
public class ContextListener implements ServletContextListener {
        

    public ContextListener() {
        // TODO Auto-generated constructor stub
    }

    public void contextDestroyed(ServletContextEvent ctxtEvt)  { 
         // TODO Auto-generated method stub
    }

    @Override
    public void contextInitialized(ServletContextEvent ctxtEvt)  {
        System.out.println("Starting DAO Context");
        
        ServletContext ctxt = ctxtEvt.getServletContext();
        
        ServiceConfig conf = initConfig(ctxt);
        
        initDataLoader(ctxt, conf);
        
        initCircuitBreakers(ctxt, conf);
        
        
        System.out.println("DAO Context done");
    }
    
    private void initDataLoader(ServletContext ctxt, ServiceConfig conf) {
        DataLoader load = new DataLoader(ctxt,conf);            
        ctxt.setAttribute("dataloader", load);
        load.doLoad();
    }
        
    
    private ServiceConfig initConfig(ServletContext ctxt) {
        ServiceConfig conf = new ServiceConfig();
        
        new ContextConfigLoader(ctxt).loadConfig(conf);
        
        ctxt.setAttribute("config", conf);
        
        // /////////////////////////////////////
        ConfigServlet servlet = new ConfigServlet();
        servlet.setConfigObject( conf );
        ServletRegistration.Dynamic dynconf = ctxt.addServlet("webconfig", servlet );
        dynconf.addMapping("/ConfigServlet");
        
        return conf;    
        
    }
    
    private void initCircuitBreakers(ServletContext ctxt, ServiceConfig conf) {
        CircuitBreakerManager mgr = CircuitBreakerManager.getManager();
        
        AccountingCircuitBreaker osm = new AccountingCircuitBreaker("osm", conf);
        mgr.addCircuitBreaker( osm );
        
        AccountingCircuitBreaker google = new AccountingCircuitBreaker("google", conf);
        mgr.addCircuitBreaker( google );
        
        
        //
        CircuitBreakerServletBase servlet = new CircuitBreakerServletBase();
        ServletRegistration.Dynamic dynconf = ctxt.addServlet("circuitbreaker", servlet);
        dynconf.addMapping("/CircuitBreakerServlet");
        dynconf.setInitParameter("readonly", "1");

    }
        
        
}
1	package dk.daoas.daoadresseservice;
2
3	import javax.servlet.ServletContext;
4	import javax.servlet.ServletContextEvent;
5	import javax.servlet.ServletContextListener;
6	import javax.servlet.ServletRegistration;
7	import javax.servlet.annotation.WebListener;
8
9	import dk.daoas.daoadresseservice.admin.ServiceConfig;
10	import dk.thoerup.circuitbreaker.AccountingCircuitBreaker;
11	import dk.thoerup.circuitbreaker.CircuitBreakerManager;
12	import dk.thoerup.circuitbreaker.web.CircuitBreakerServletBase;
13	import dk.thoerup.webconfig.ConfigServlet;
14	import dk.thoerup.webconfig.ContextConfigLoader;
15
16	/**
17	* Application Lifecycle Listener implementation class ContextListener
18	*
19	*/
20	@WebListener
21	public class ContextListener implements ServletContextListener {
22
23
24
25
26	public ContextListener() {
27	// TODO Auto-generated constructor stub
28	}
29
30	public void contextDestroyed(ServletContextEvent ctxtEvt) {
31	// TODO Auto-generated method stub
32	}
33
34	@Override
35	public void contextInitialized(ServletContextEvent ctxtEvt) {
36	System.out.println("Starting DAO Context");
37
38	ServletContext ctxt = ctxtEvt.getServletContext();
39
40	ServiceConfig conf = initConfig(ctxt);
41
42	initDataLoader(ctxt, conf);
43
44	initCircuitBreakers(ctxt, conf);
45
46
47	System.out.println("DAO Context done");
48	}
49
50	private void initDataLoader(ServletContext ctxt, ServiceConfig conf) {
51	DataLoader load = new DataLoader(ctxt,conf);
52	ctxt.setAttribute("dataloader", load);
53	load.doLoad();
54	}
55
56
57	private ServiceConfig initConfig(ServletContext ctxt) {
58	ServiceConfig conf = new ServiceConfig();
59
60	new ContextConfigLoader(ctxt).loadConfig(conf);
61
62	ctxt.setAttribute("config", conf);
63
64	// /////////////////////////////////////
65	ConfigServlet servlet = new ConfigServlet();
66	servlet.setConfigObject( conf );
67	ServletRegistration.Dynamic dynconf = ctxt.addServlet("webconfig", servlet );
68	dynconf.addMapping("/ConfigServlet");
69
70	return conf;
71
72	}
73
74	private void initCircuitBreakers(ServletContext ctxt, ServiceConfig conf) {
75	CircuitBreakerManager mgr = CircuitBreakerManager.getManager();
76
77	AccountingCircuitBreaker osm = new AccountingCircuitBreaker("osm", conf);
78	mgr.addCircuitBreaker( osm );
79
80	AccountingCircuitBreaker google = new AccountingCircuitBreaker("google", conf);
81	mgr.addCircuitBreaker( google );
82
83
84	//
85	CircuitBreakerServletBase servlet = new CircuitBreakerServletBase();
86	ServletRegistration.Dynamic dynconf = ctxt.addServlet("circuitbreaker", servlet);
87	dynconf.addMapping("/CircuitBreakerServlet");
88	dynconf.setInitParameter("readonly", "1");
89
90	}
91
92
93	}