Examples with Pinger org.opennms.netmgt.icmp.Pinger used on opensource projects

Example 6 with Pinger

use of org.opennms.netmgt.icmp.Pinger in project opennms by OpenNMS.

the class Installer method pingLocalhost.

/**
 * <p>pingLocalhost</p>
 *
 * @throws java.io.IOException if any.
 */
public void pingLocalhost() throws Exception {
    String host = "127.0.0.1";
    java.net.InetAddress addr = null;
    try {
        addr = InetAddress.getByName(host);
    } catch (java.net.UnknownHostException e) {
        System.out.println("UnknownHostException when looking up " + host + ".");
        throw e;
    }
    Pinger pinger;
    try {
        pinger = new BestMatchPingerFactory().getInstance();
    } catch (UnsatisfiedLinkError e) {
        System.out.println("UnsatisfiedLinkError while creating an ICMP Pinger.  Most likely failed to load " + "libjicmp.so.  Try setting the property 'opennms.library.jicmp' to point at the " + "full path name of the libjicmp.so shared library or switch to using the JnaPinger " + "(e.g. 'java -Dopennms.library.jicmp=/some/path/libjicmp.so ...')\n" + "You can also set the 'opennms.library.jicmp6' property in the same manner to specify " + "the location of the JICMP6 library.");
        throw e;
    } catch (NoClassDefFoundError e) {
        System.out.println("NoClassDefFoundError while creating an IcmpSocket.  Most likely failed to load libjicmp.so" + "or libjicmp6.so.");
        throw e;
    } catch (Exception e) {
        System.out.println("Exception while creating Pinger.");
        throw e;
    }
    // using regular InetAddress toString here since is just printed for the users benefit
    System.out.print("Pinging " + host + " (" + addr + ")...");
    Number rtt = pinger.ping(addr);
    if (rtt == null) {
        System.out.println("failed.!");
    } else {
        System.out.printf("successful.. round trip time: %.3f ms%n", rtt.doubleValue() / 1000.0);
    }
}