Notifications about changes to centralized configuration settings
When the detects any changes to the centralized configuration settings, it sends a notification, after a 5 second delay, to the components regarding the change. Each affected component then updates the setting across all instances.
For example, when you change the value of the arsystem.session_timeout setting, the notifies regarding the change. The , in turn, updates the setting across all s in that cluster within 30 seconds.
Notifying the configuration change
When any configuration changes, the integrating application should get a notification. You need to write a code to get these notifications. Refer to the following code:
import java.util.List;
import com.bmc.arsys.api.ARException;
import com.bmc.arsys.api.ARServerUser;
import com.bmc.arsys.companion.client.configuration.ConfigurationChange;
import com.bmc.arsys.companion.client.configuration.ConfigurationClient;
import com.bmc.arsys.companion.client.configuration.ConfigurationClientFactory;
import com.bmc.arsys.companion.client.configuration.ConfigurationListener;
import com.bmc.arsys.companion.client.notification.NotificationClient;
import com.bmc.arsys.companion.client.notification.NotificationClientFactory;
import com.bmc.arsys.util.ArrayCentralConfig;
import com.bmc.arsys.util.CentralConfigFactory;
public class NotificationRegistrationTest implements ConfigurationListener {
protected static ARServerUser serverUser = null;
protected static ArrayCentralConfig centralConfig = null;
// provide appropriate user name for the server
protected static String user = "Demo";
// provide appropriate password for the user name
protected static String password = "";
protected static String authentication = "";
protected static String locale = null;
// provide arserver name
protected static String serverName = "localhost";
protected static int tcpPort = 0;
protected static int NOTIFICATION_INTERVAL = 30;
// hostname
protected static String hostname = "localhost";
protected static int RMIPORT = 0;
protected static String componenttype = "com.bmc.arsys.pluginServer";
protected static String componentName = "PluginServer_IN-santokum-w1_9977_IDGBJ2JDGUNAAAPIKATOPHN12DAI6RPluginServer_clm-pun-022381_9977_IDGBJ2JDGUNAAAPIKATOPHN12DAI6R";
public static void main(String[] args) {
serverUser = new ARServerUser(user, password, authentication, locale,
serverName, tcpPort);
// write a class implementing ConfigurationListener. This class will have update function
// which will receive notification for changes in configuration for component type and
// component name registered.
NotificationRegistrationTest notificationListner = new NotificationRegistrationTest();
ConfigurationClient client = new ConfigurationClientFactory().create(hostname, RMIPORT,
serverUser, notificationListner, NOTIFICATION_INTERVAL);
// add component type and component name for which you want change notification to be
// recieved.
client.addConfiguration(componenttype, componentName);
// Initialize the notification client
NotificationClient notificationClient = new NotificationClientFactory().create(hostname,
serverUser, NOTIFICATION_INTERVAL);
notificationClient.addListener(client);
client.start();
notificationClient.start();
}
@Override
public void update(ConfigurationChange confChange) {
// get new configuration
// compare with existing configuration and take appropriate action where changes occured.
CentralConfigFactory factory = CentralConfigFactory.newInstance(serverUser);
ArrayCentralConfig centralConfig = factory.newArrayCentralConfig();
List<String[]> settings = null;
try {
settings = centralConfig.getConfigSettingsAsList(componentName, componenttype, null);
} catch (ARException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
import com.bmc.arsys.api.ARException;
import com.bmc.arsys.api.ARServerUser;
import com.bmc.arsys.companion.client.configuration.ConfigurationChange;
import com.bmc.arsys.companion.client.configuration.ConfigurationClient;
import com.bmc.arsys.companion.client.configuration.ConfigurationClientFactory;
import com.bmc.arsys.companion.client.configuration.ConfigurationListener;
import com.bmc.arsys.companion.client.notification.NotificationClient;
import com.bmc.arsys.companion.client.notification.NotificationClientFactory;
import com.bmc.arsys.util.ArrayCentralConfig;
import com.bmc.arsys.util.CentralConfigFactory;
public class NotificationRegistrationTest implements ConfigurationListener {
protected static ARServerUser serverUser = null;
protected static ArrayCentralConfig centralConfig = null;
// provide appropriate user name for the server
protected static String user = "Demo";
// provide appropriate password for the user name
protected static String password = "";
protected static String authentication = "";
protected static String locale = null;
// provide arserver name
protected static String serverName = "localhost";
protected static int tcpPort = 0;
protected static int NOTIFICATION_INTERVAL = 30;
// hostname
protected static String hostname = "localhost";
protected static int RMIPORT = 0;
protected static String componenttype = "com.bmc.arsys.pluginServer";
protected static String componentName = "PluginServer_IN-santokum-w1_9977_IDGBJ2JDGUNAAAPIKATOPHN12DAI6RPluginServer_clm-pun-022381_9977_IDGBJ2JDGUNAAAPIKATOPHN12DAI6R";
public static void main(String[] args) {
serverUser = new ARServerUser(user, password, authentication, locale,
serverName, tcpPort);
// write a class implementing ConfigurationListener. This class will have update function
// which will receive notification for changes in configuration for component type and
// component name registered.
NotificationRegistrationTest notificationListner = new NotificationRegistrationTest();
ConfigurationClient client = new ConfigurationClientFactory().create(hostname, RMIPORT,
serverUser, notificationListner, NOTIFICATION_INTERVAL);
// add component type and component name for which you want change notification to be
// recieved.
client.addConfiguration(componenttype, componentName);
// Initialize the notification client
NotificationClient notificationClient = new NotificationClientFactory().create(hostname,
serverUser, NOTIFICATION_INTERVAL);
notificationClient.addListener(client);
client.start();
notificationClient.start();
}
@Override
public void update(ConfigurationChange confChange) {
// get new configuration
// compare with existing configuration and take appropriate action where changes occured.
CentralConfigFactory factory = CentralConfigFactory.newInstance(serverUser);
ArrayCentralConfig centralConfig = factory.newArrayCentralConfig();
List<String[]> settings = null;
try {
settings = centralConfig.getConfigSettingsAsList(componentName, componenttype, null);
} catch (ARException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
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