com.msi.tough.query.serviceloadbalancer.ServiceLBUtil.java Source code

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Here is the source code for com.msi.tough.query.serviceloadbalancer.ServiceLBUtil.java

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/*
 * TopStack (c) Copyright 2012-2013 Transcend Computing, Inc.
 *
 * Licensed 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 com.msi.tough.query.serviceloadbalancer;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.hibernate.SQLQuery;
import org.hibernate.Session;

import com.msi.tough.core.JsonUtil;
import com.msi.tough.utils.CFUtil;
import com.msi.tough.utils.ChefUtil;

public class ServiceLBUtil {
    private static String DBNAME = "__TRANSCEND__SERVICE__DATABAG__";

    @SuppressWarnings("unchecked")
    public static void reconfigure(final Session s) throws Exception {
        String localhostname = java.net.InetAddress.getLocalHost().getHostName();
        Map<String, Object> config = new HashMap<String, Object>();
        List<Map<String, Object>> inports = new ArrayList<Map<String, Object>>();
        config.put("inports", inports);
        SQLQuery q = s.createSQLQuery(
                "select hostnm, inport, outport, backend from ts_inst_lb order by inport, hostnm, backend");
        List<Object[]> l = q.list();

        String inport = "";
        Map<String, Object> inportm = null;

        String hostnm = "";
        List<Map<String, Object>> hosts = null;
        Map<String, Object> hostm = null;

        String backendnm = "";
        List<Map<String, Object>> backends = null;
        Map<String, Object> backendm = null;

        for (Object[] i : l) {
            if (!inport.equals(i[1].toString())) {
                inportm = new HashMap<String, Object>();
                inports.add(inportm);
                inport = i[1].toString();
                hosts = new ArrayList<Map<String, Object>>();
                inportm.put("hosts", hosts);
                hostnm = "";
            }
            inportm.put("value", i[1].toString());

            if (!hostnm.equals(i[0].toString())) {
                hostm = new HashMap<String, Object>();
                hosts.add(hostm);
                hostnm = i[0].toString();
                backends = new ArrayList<Map<String, Object>>();
                hostm.put("backends", backends);
                backendnm = "";
            }
            hostm.put("value", i[0].toString());

            if (!backendnm.equals(i[3].toString())) {
                backendm = new HashMap<String, Object>();
                backends.add(backendm);
                backendnm = i[3].toString();
            }
            backendm.put("value", i[3].toString());
            backendm.put("outport", i[2].toString());
        }

        ChefUtil.putNodeAttribute(localhostname, DBNAME, DBNAME);
        ChefUtil.createDatabag(DBNAME);
        String json = JsonUtil.toJsonString(config);
        ChefUtil.createDatabagItem(DBNAME, "config", json);
        ChefUtil.putNodeRunlist(localhostname, "role[transcend_service_loadbalancer]");
        //final String keyDir = (String) ConfigurationUtil
        //      .getConfiguration(Arrays.asList(new String[] { "KEYS_DIR" }));
        CFUtil.executeCommand(null, null, "chef-client");
    }
}