public DynamicRequestLimiter(DynamicDistributedLogConfiguration dynConf,
                             StatsLogger statsLogger,
                             Feature rateLimitDisabledFeature) {
    final StatsLogger limiterStatsLogger = statsLogger.scope("dynamic");
    this.dynConf = dynConf;
    this.rateLimitDisabledFeature = rateLimitDisabledFeature;
    this.listener = new ConfigurationListener() {
        @Override
        public void configurationChanged(ConfigurationEvent event) {
            // Note that this method may be called several times if several config options
            // are changed. The effect is harmless except that we create and discard more
            // objects than we need to.
            LOG.debug("Config changed callback invoked with event {} {} {} {}", new Object[] {
                    event.getPropertyName(), event.getPropertyValue(), event.getType(),
                    event.isBeforeUpdate()});
            if (!event.isBeforeUpdate()) {
                limiterStatsLogger.getCounter("config_changed").inc();
                LOG.debug("Rebuilding limiter");
                limiter = build();
            }
        }
    };
    LOG.debug("Registering config changed callback");
    dynConf.addConfigurationListener(listener);
}
 

@Override
protected PropertyUtil initialValue() {
	PropertyUtil p = new PropertyUtil(
			System.getProperty("application.properties.file",
					"resources/application.properties"));
	p.setProperty("isfw.build.info", getBuildInfo());
	p.setEncoding(p.getString(ApplicationProperties.LOCALE_CHAR_ENCODING.key, "UTF-8"));
	p.setProperty("execution.start.ts", System.currentTimeMillis());

	File prjDir = new File(".").getAbsoluteFile().getParentFile();
	p.setProperty("project.path", prjDir.getAbsolutePath());
	if(!p.containsKey("project.name"))
	p.setProperty("project.name", prjDir.getName());

	log.info("ISFW build info: " + p.getProperty("isfw.build.info"));
	String[] resources = p.getStringArray("env.resources", "resources");
	for (String resource : resources) {
		addBundle(p, resource);
	}
	ConfigurationListener cl = new PropertyConfigurationListener();
	p.addConfigurationListener(cl);
	return p;
}
 

public DynamicRequestLimiter(DynamicDistributedLogConfiguration dynConf,
                             StatsLogger statsLogger, Feature rateLimitDisabledFeature) {
    final StatsLogger limiterStatsLogger = statsLogger.scope("dynamic");
    this.dynConf = dynConf;
    this.rateLimitDisabledFeature = rateLimitDisabledFeature;
    this.listener = new ConfigurationListener() {
        @Override
        public void configurationChanged(ConfigurationEvent event) {
            // Note that this method may be called several times if several config options
            // are changed. The effect is harmless except that we create and discard more
            // objects than we need to.
            LOG.debug("Config changed callback invoked with event {} {} {} {}", new Object[] {
                    event.getPropertyName(), event.getPropertyValue(), event.getType(),
                    event.isBeforeUpdate()});
            if (!event.isBeforeUpdate()) {
                limiterStatsLogger.getCounter("config_changed").inc();
                LOG.debug("Rebuilding limiter");
                limiter = build();
            }
        }
    };
    LOG.debug("Registering config changed callback");
    dynConf.addConfigurationListener(listener);
}
 

@Override
protected PropertyUtil childValue(PropertyUtil parentValue) {
	PropertyUtil cp = new PropertyUtil(parentValue);
	ConfigurationListener cl = new PropertyConfigurationListener();
	cp.addConfigurationListener(cl);
	return cp;
}
 

private void addConfigurationListener() {
    final MetricsCloudWatchConfiguration springConfig = this;
    ConfigurationManager.getConfigInstance().addConfigurationListener(new ConfigurationListener() {

        @Override
        public synchronized void configurationChanged(ConfigurationEvent event) {
            if (!(event.getType() == AbstractConfiguration.EVENT_SET_PROPERTY ||
                    event.getType() == AbstractConfiguration.EVENT_ADD_PROPERTY)) {
                return;
            }
            if (event.isBeforeUpdate()) {
                return;
            }
            String name = event.getPropertyName();

            if (!(name.equals(METRICS_AWS_ENABLED) ||
                    name.equals(METRICS_AWS_FILTER) ||
                    name.equals(METRICS_AWS_PUBLISH_INTERVAL) ||
                    name.equals(METRICS_AWS_PUBLISH_INTERVAL_UNIT))) {
                return;
            }

            springConfig.enabled = name.equals(METRICS_AWS_ENABLED) ? Boolean.parseBoolean(event.getPropertyValue() + "") : springConfig.enabled;
            destroyReporter();
            if (springConfig.enabled) {
                createReporter();
            }

        }
    });
}
 

private void addConfigurationListener() {
    final MetricsGraphiteConfiguration springConfig = this;
    ConfigurationManager.getConfigInstance().addConfigurationListener(new ConfigurationListener() {

        @Override
        public synchronized void configurationChanged(ConfigurationEvent event) {
            if (!(event.getType() == AbstractConfiguration.EVENT_SET_PROPERTY ||
                    event.getType() == AbstractConfiguration.EVENT_ADD_PROPERTY)) {
                return;
            }
            if (event.isBeforeUpdate()) {
                return;
            }
            String name = event.getPropertyName();
            if (!(name.equals(METRICS_GRAPHITE_ENABLED) ||
                    name.equals(METRICS_GRAPHITE_SERVER) ||
                    name.equals(METRICS_GRAPHITE_PORT) ||
                    name.equals(METRICS_GRAPHITE_FILTER) ||
                    name.equals(METRICS_GRAPHITE_PUBLISH_INTERVAL) ||
                    name.equals(METRICS_GRAPHITE_PUBLISH_INTERVAL_UNIT))) {
                return;
            }

            springConfig.enabled = name.equals(METRICS_GRAPHITE_ENABLED) ? Boolean.parseBoolean(event.getPropertyValue() + "") : springConfig.enabled;

            destroyReporterLoader();
            if (springConfig.enabled) {
                createReporterLoader();
            }

        }
    });
}
 

private ArchaiusPropertyResolver() {
    this.config = ConfigurationManager.getConfigInstance();

    ConfigurationManager.getConfigInstance().addConfigurationListener(new ConfigurationListener() {
        @Override
        public void configurationChanged(ConfigurationEvent event) {
            if (!event.isBeforeUpdate()) {
                actions.forEach(ArchaiusPropertyResolver::invokeAction);
            }
        }
    });
}
 

@Test(timeout = 60000)
public void testExceptionInConfigLoad() throws Exception {
    PropertiesWriter writer = new PropertiesWriter();
    writer.setProperty("prop1", "1");
    writer.save();

    DeterministicScheduler mockScheduler = new DeterministicScheduler();
    FileConfigurationBuilder builder = new PropertiesConfigurationBuilder(writer.getFile().toURI().toURL());
    ConcurrentConstConfiguration conf = new ConcurrentConstConfiguration(new CompositeConfiguration());
    List<FileConfigurationBuilder> fileConfigBuilders = Lists.newArrayList(builder);
    ConfigurationSubscription confSub =
            new ConfigurationSubscription(conf, fileConfigBuilders, mockScheduler, 100, TimeUnit.MILLISECONDS);

    final AtomicInteger count = new AtomicInteger(1);
    conf.addConfigurationListener(new ConfigurationListener() {
        @Override
        public void configurationChanged(ConfigurationEvent event) {
            LOG.info("config changed {}", event);
            // Throw after so we actually see the update anyway.
            if (!event.isBeforeUpdate()) {
                count.getAndIncrement();
                throw new RuntimeException("config listener threw and exception");
            }
        }
    });

    int i = 0;
    int initial = 0;
    while (count.get() == initial) {
        writer.setProperty("prop1", Integer.toString(i++));
        writer.save();
        mockScheduler.tick(100, TimeUnit.MILLISECONDS);
    }

    initial = count.get();
    while (count.get() == initial) {
        writer.setProperty("prop1", Integer.toString(i++));
        writer.save();
        mockScheduler.tick(100, TimeUnit.MILLISECONDS);
    }
}
 

@Test(timeout = 60000)
public void testExceptionInConfigLoad() throws Exception {
    PropertiesWriter writer = new PropertiesWriter();
    writer.setProperty("prop1", "1");
    writer.save();

    DeterministicScheduler mockScheduler = new DeterministicScheduler();
    FileConfigurationBuilder builder = new PropertiesConfigurationBuilder(writer.getFile().toURI().toURL());
    ConcurrentConstConfiguration conf = new ConcurrentConstConfiguration(new DistributedLogConfiguration());
    List<FileConfigurationBuilder> fileConfigBuilders = Lists.newArrayList(builder);
    ConfigurationSubscription confSub =
            new ConfigurationSubscription(conf, fileConfigBuilders, mockScheduler, 100, TimeUnit.MILLISECONDS);

    final AtomicInteger count = new AtomicInteger(1);
    conf.addConfigurationListener(new ConfigurationListener() {
        @Override
        public void configurationChanged(ConfigurationEvent event) {
            LOG.info("config changed {}", event);
            // Throw after so we actually see the update anyway.
            if (!event.isBeforeUpdate()) {
                count.getAndIncrement();
                throw new RuntimeException("config listener threw and exception");
            }
        }
    });

    int i = 0;
    int initial = 0;
    while (count.get() == initial) {
        writer.setProperty("prop1", Integer.toString(i++));
        writer.save();
        mockScheduler.tick(100, TimeUnit.MILLISECONDS);
    }

    initial = count.get();
    while (count.get() == initial) {
        writer.setProperty("prop1", Integer.toString(i++));
        writer.save();
        mockScheduler.tick(100, TimeUnit.MILLISECONDS);
    }
}
 

@Override
public void addConfigurationListener(ConfigurationListener l) {
  eventSource.addConfigurationListener(l);
}
 

@Override
public boolean removeConfigurationListener(ConfigurationListener l) {
  return eventSource.removeConfigurationListener(l);
}
 

@Override
public Collection<ConfigurationListener> getConfigurationListeners() {
  return eventSource.getConfigurationListeners();
}
 

public void setConfigurationListener( ConfigurationListener listener ){
    this.listener = listener;
}