Salesforce WSC Partner Connection Session Renew when Session Timeout

Implement SessionRenewer

package com.sforce.authentication;

import javax.inject.Inject;
import javax.xml.namespace.QName;


import org.slf4j.Logger;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.PropertySource;
import org.springframework.core.env.Environment;

import com.sforce.async.AsyncApiException;
import com.sforce.async.BulkConnection;
import com.sforce.soap.partner.Connector;
import com.sforce.soap.partner.PartnerConnection;
import com.sforce.ws.ConnectionException;
import com.sforce.ws.ConnectorConfig;
import com.sforce.ws.SessionRenewer;

/**
 * @author tmichels
 */
@PropertySource("classpath:salesforcesync.properties")
@Configuration
public class SalesforceAuthenticationConfigImpl implements SalesforceAuthenticationConfig {

	private static final Logger logger = org.slf4j.LoggerFactory.getLogger(SalesforceAuthenticationConfigImpl.class);
	
	@Inject private Environment environment;
		    
	private PartnerConnection partnerConnection = null;
	private BulkConnection bulkConnection = null;
	
	public ConnectorConfig productionConnectionConfig(){
		ConnectorConfig config = new ConnectorConfig();
		config.setUsername("username");
		config.setPassword("passwordtoken");
		config.setCompression(true);
		return config;
	}
	
    @Bean(name="loginToProductionSalesforce")
	public PartnerConnection loginToProductionSalesforce() {
    	try {
    		ConnectorConfig config = productionConnectionConfig();
    		config.setSessionRenewer(new productionSessionRenewer());
        	partnerConnection = Connector.newConnection(config);
		} catch (ConnectionException e) {
			logger.error("SalesforceAuthenticationConfigImpl.loginToProductionSalesforce(): " + e.getMessage());
			e.printStackTrace();
		}
		return partnerConnection;
	}
    
    public class productionSessionRenewer implements SessionRenewer {
		@Override
		public SessionRenewalHeader renewSession(ConnectorConfig config) throws ConnectionException {
			ConnectorConfig conConfig = productionConnectionConfig();
			partnerConnection = Connector.newConnection(conConfig);
            SessionRenewalHeader header = new SessionRenewalHeader();
            header.name = new QName("urn:partner.soap.sforce.com", "SessionHeader");
            header.headerElement = partnerConnection.getSessionHeader();
            return header;
		}
    }
}

Test SessionRenewer

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(loader=AnnotationConfigContextLoader.class, classes={SalesforceAuthenticationConfigImpl.class})
public class SalesforceAuthenticationServiceTest {

	@Inject @Named("loginToProductionSalesforce") PartnerConnection loginToProductionPartner;
	
	@Test
	public void testLoginToProductionSalesforce() {
		assertNotNull(loginToProductionPartner.getConfig().getSessionId());
		try {
			loginToProductionPartner.logout();
                        assertNotNull(loginToProductionPartner.getConfig().getSessionId());
		} catch (ConnectionException e) {
			e.printStackTrace();
		}
	}
}