UserProjectsLdapServiceInstanceFactory.java

/**
 * Licensed to the Austrian Association for Software Tool Integration (AASTI)
 * under one or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information regarding copyright
 * ownership. The AASTI licenses this file to you under the Apache License,
 * Version 2.0 (the "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.openengsb.connector.userprojects.ldap.internal;

import java.util.Map;
import java.util.Timer;
import java.util.TimerTask;

import org.openengsb.connector.userprojects.ldap.internal.ldap.ServerConfig;
import org.openengsb.core.api.Connector;
import org.openengsb.core.api.context.ContextHolder;
import org.openengsb.core.common.AbstractConnectorInstanceFactory;
import org.openengsb.infrastructure.ldap.LdapDao;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class UserProjectsLdapServiceInstanceFactory extends
        AbstractConnectorInstanceFactory<UserProjectsLdapServiceImpl> {
    private static final Logger LOG = LoggerFactory.getLogger(UserProjectsLdapServiceInstanceFactory.class);

    private LdapDao ldapDao;
    private SynchronizationService synchronizationService;
    private final Timer syncTimer = new Timer();
    
    public UserProjectsLdapServiceInstanceFactory() {
    }

    public void setSynchronizationService(SynchronizationService service) {
        synchronizationService = service;
    }

    @Override
    public Connector createNewInstance(String id) {
        return new UserProjectsLdapServiceImpl();
    }

    @Override
    public UserProjectsLdapServiceImpl doApplyAttributes(UserProjectsLdapServiceImpl instance,
        Map<String, String> attributes) {
        if (attributes.containsKey("ldapServer.host")) {
            ServerConfig.host = attributes.get("ldapServer.host");
        }
        if (attributes.containsKey("ldapServer.port")) {
            ServerConfig.port = Integer.valueOf(attributes.get("ldapServer.port"));
        }
        if (attributes.containsKey("ldapServer.userDn")) {
            ServerConfig.userDn = attributes.get("ldapServer.userDn");
        }
        if (attributes.containsKey("ldapServer.credentials")) {
            ServerConfig.credentials = attributes.get("ldapServer.credentials");
        }
        if (attributes.containsKey("ldapServer.multipleValueSeparator")) {
            ServerConfig.multipleValueSeparator = attributes.get("ldapServer.multipleValueSeparator");
        }

        if (attributes.containsKey("ldapServer.syncPeriodInMilliseconds")) {
            ServerConfig.syncPeriodInMilliseconds =
                Long.valueOf(attributes.get("ldapServer.syncPeriodInMilliseconds"));
        }

        ldapDao = new LdapDao(ServerConfig.host, ServerConfig.port);
        instance.setLdapDao(ldapDao);
        
        setupSynchronization();

        return instance;
    }
    
    private void setupSynchronization() {
        TimerTask task = new TimerTask() {
            @Override
            public void run() {
                String oldContext = ContextHolder.get().getCurrentContextId();
                ContextHolder.get().setCurrentContextId("foo");
                try {
                    if (!ldapDao.getConnection().isConnected()) {
                        LOG.info("Trying to connect to the LDAP server on {}:{}", new Object[] { ServerConfig.host,
                            ServerConfig.port });
                        ldapDao.connect(ServerConfig.userDn, ServerConfig.credentials);
                    }
                    synchronizationService.syncFromLdapServerToOpenEngSB(ldapDao);
                } catch (Exception e) {
                    LOG.error("Could not sync from LDAP server to OpenEngSB", e);
                }
                ContextHolder.get().setCurrentContextId(oldContext);
            }
        };
        
        syncTimer.schedule(task, 0, ServerConfig.syncPeriodInMilliseconds);
    }

    public void destroy() {
        syncTimer.cancel();
        ldapDao.disconnect();
    }
}