# TenantInfoInitiatorProvider.java

    /**
     *  Copyright (c) 2016, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
     *
     *  WSO2 Inc. 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.apache.synapse.commons.util.ext;

    import org.apache.commons.logging.Log;
    import org.apache.commons.logging.LogFactory;
    import org.apache.synapse.commons.util.MiscellaneousUtil;

    import java.util.Properties;

    public final class TenantInfoInitiatorProvider {
        private static final Log logger = LogFactory.getLog(TenantInfoInitiator.class.getName());

        public static final String CARBON_TENANT_INFO_INITIATOR = "synapse.carbon.ext.tenant.info.initiator";
        public static final String PROPERTY_FILE_PATH = "synapse.properties";

        private static TenantInfoInitiator tenantInfoInitiatorInstance = null;

        private TenantInfoInitiatorProvider(){
        }

        /**
         * Get instance of TenantInfoInitiator loaded based on synapse property path
         *
         * @return TenantInfoInitiator instance
         */
        public static TenantInfoInitiator getTenantInfoInitiator() {
            if (tenantInfoInitiatorInstance == null) {
                try {
                    Properties properties = MiscellaneousUtil.loadProperties(PROPERTY_FILE_PATH);
                    String property = properties.getProperty(CARBON_TENANT_INFO_INITIATOR);
                    if (property != null) {
                        Class clazz = TenantInfoInitiator.class.getClassLoader().
                                loadClass(property.trim());
                        tenantInfoInitiatorInstance = (TenantInfoInitiator) clazz.newInstance();
                    }
                } catch (Exception e) {
                    logger.error("Error while initializing tenant info configuration provider. Error:"
                                 + e.getLocalizedMessage());
                }
            }
            return tenantInfoInitiatorInstance;
        }
    }