org.apache.cayenne.event.JGroupsModule Maven / Gradle / Ivy

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package org.apache.cayenne.event;

import org.apache.cayenne.di.Binder;
import org.apache.cayenne.di.MapBuilder;
import org.apache.cayenne.di.Module;

/**
 * @since 4.0
 */
public class JGroupsModule implements Module {

    /**
     * A DI container key for the Map<String, String> storing
     * {@link org.apache.cayenne.event.JavaGroupsBridge} properties
     *
     * @since 4.0
     */
    public static final String JAVA_GROUPS_BRIDGE_PROPERTIES_MAP = "cayenne.server.java_group_bridge";

    public static void contributeMulticastAddress(Binder binder, String address) {
        contributeProperties(binder).put(JavaGroupsBridge.MCAST_ADDRESS_PROPERTY, address);
    }

    public static void contributeMulticastPort(Binder binder, int port) {
        contributeProperties(binder).put(JavaGroupsBridge.MCAST_PORT_PROPERTY, Integer.toString(port));
    }

    public static void contributeConfigUrl(Binder binder, String config) {
        contributeProperties(binder).put(JavaGroupsBridge.JGROUPS_CONFIG_URL_PROPERTY, config);
    }

    private static MapBuilder contributeProperties(Binder binder) {
        return binder.bindMap(String.class, JAVA_GROUPS_BRIDGE_PROPERTIES_MAP);
    }

    @Override
    public void configure(Binder binder) {
        // init properties' defaults
        contributeMulticastAddress(binder, JavaGroupsBridge.MCAST_ADDRESS_DEFAULT);
        contributeMulticastPort(binder, JavaGroupsBridge.MCAST_PORT_DEFAULT_INT);

        binder.bind(EventBridge.class).toProvider(JavaGroupsBridgeProvider.class).withoutScope();
    }
}