List of usage examples for java.net InetAddress getCanonicalHostName
public String getCanonicalHostName()
From source file:org.blue.star.plugins.check_ping.java
public boolean execute_check() { for (String hostname : addresses) { try {/*from w w w . jav a 2 s. com*/ InetAddress inet = InetAddress.getByName(hostname); long execute_time = 0; long packet_loss = 0; for (int pings = 0; pings < max_packets; pings++) { boolean reachable = false; long ping_time = System.currentTimeMillis(); if (network_interface != null) { reachable = inet.isReachable(network_interface, 0, utils_h.timeout_interval); } else { reachable = inet.isReachable(utils_h.timeout_interval); } execute_time += (System.currentTimeMillis() - ping_time); if (!reachable) packet_loss++; } rta = execute_time / max_packets; pl = (int) packet_loss / max_packets * 100; if (verbose > 0) { System.out.println("rta = " + rta); System.out.println("pl = " + pl); } if (verbose > 1) { System.out.println("isAnyLocalAddress = " + inet.isAnyLocalAddress()); System.out.println("isLinkLocalAddress = " + inet.isLinkLocalAddress()); System.out.println("isLoopbackAddress = " + inet.isLoopbackAddress()); System.out.println("isMCGlobal = " + inet.isMCGlobal()); System.out.println("isMCLinkLocal = " + inet.isMCLinkLocal()); System.out.println("isMCNodeLocal = " + inet.isMCNodeLocal()); System.out.println("isMCOrgLocal = " + inet.isMCOrgLocal()); System.out.println("isMCSiteLocal = " + inet.isMCSiteLocal()); System.out.println("isMulticastAddress = " + inet.isMulticastAddress()); System.out.println("isSiteLocalAddress = " + inet.isSiteLocalAddress()); System.out.println("isReachable = " + inet.isReachable(utils_h.timeout_interval)); System.out.println("getCanonicalHostName = " + inet.getCanonicalHostName()); System.out.println("getHostAddress = " + inet.getHostAddress()); System.out.println("getHostName = " + inet.getHostName()); System.out.println("getClass.getName = " + inet.getClass().getName()); } /* The list is only used to check alternatives, if we pass don't do more */ if (packet_loss != max_packets) break; } catch (Exception e) { warn_text = e.getMessage(); e.printStackTrace(); } } if (pl >= cpl || rta >= crta || rta < 0) check_state = common_h.STATE_CRITICAL; else if (pl >= wpl || rta >= wrta) check_state = common_h.STATE_WARNING; else if (pl >= 0 && rta >= 0) check_state = common_h.STATE_OK; return true; }
From source file:tachyon.master.MasterInfo.java
/** * Get the address of a worker.//from w w w .ja v a 2s. c om * * @param random If true, select a random worker * @param host If <code>random</code> is false, select a worker on this host * @return the address of the selected worker, or null if no address could be found */ public NetAddress getWorker(boolean random, String host) throws UnknownHostException { synchronized (mWorkers) { if (mWorkerAddressToId.isEmpty()) { return null; } if (random) { int index = new Random(mWorkerAddressToId.size()).nextInt(mWorkerAddressToId.size()); for (NetAddress address : mWorkerAddressToId.keySet()) { if (index == 0) { LOG.debug("getRandomWorker: {}", address); return address; } index--; } for (NetAddress address : mWorkerAddressToId.keySet()) { LOG.debug("getRandomWorker: {}", address); return address; } } else { for (NetAddress address : mWorkerAddressToId.keySet()) { InetAddress inetAddress = InetAddress.getByName(address.getMHost()); if (inetAddress.getHostName().equals(host) || inetAddress.getHostAddress().equals(host) || inetAddress.getCanonicalHostName().equals(host)) { LOG.debug("getLocalWorker: {}" + address); return address; } } } } LOG.info("getLocalWorker: no local worker on " + host); return null; }
From source file:org.apache.geode.distributed.ServerLauncher.java
/** * Gets the host, as either hostname or IP address, on which the Server was bound and running. An * attempt is made to get the canonical hostname for IP address to which the Server was bound for * accepting client requests. If the server bind address is null or localhost is unknown, then a * default String value of "localhost/127.0.0.1" is returned. * * Note, this information is purely information and should not be used to re-construct state or * for other purposes./*from www . j a va 2 s. c om*/ * * @return the hostname or IP address of the host running the Server, based on the bind-address, * or 'localhost/127.0.0.1' if the bind address is null and localhost is unknown. * @see java.net.InetAddress * @see #getServerBindAddress() */ public String getServerBindAddressAsString() { try { if (getServerBindAddress() != null) { return getServerBindAddress().getCanonicalHostName(); } final InetAddress localhost = SocketCreator.getLocalHost(); return localhost.getCanonicalHostName(); } catch (UnknownHostException handled) { // Returning localhost/127.0.0.1 implies the serverBindAddress was null and no IP address // for localhost could be found return "localhost/127.0.0.1"; } }
From source file:org.apache.manifoldcf.crawler.connectors.webcrawler.WebcrawlerConnector.java
/** Look up an ipaddress given a non-canonical host name. *@return appropriate status.// w ww . j a v a 2 s . c o m */ protected int lookupIPAddress(String documentIdentifier, IProcessActivity activities, String hostName, long currentTime, StringBuilder ipAddressBuffer) throws ManifoldCFException, ServiceInterruption { String eventName = makeDNSEventName(activities, hostName); DNSManager.DNSInfo info = dnsManager.lookup(hostName, currentTime); if (info != null) { String ipAddress = info.getIPAddress(); if (ipAddress == null) return RESULTSTATUS_FALSE; ipAddressBuffer.append(ipAddress); return RESULTSTATUS_TRUE; } if (activities.beginEventSequence(eventName)) { // We uniquely can do the lookup. try { // Fetch it using InetAddress InetAddress ip = null; try { ip = InetAddress.getByName(hostName); } catch (UnknownHostException e) { // Host is unknown, so leave ipAddress as null. } String fqdn = null; String ipAddress = null; if (ip != null) { fqdn = ip.getCanonicalHostName(); ipAddress = ip.getHostAddress(); } // Write this to the cache - expiration time 6 hours dnsManager.writeDNSData(hostName, fqdn, ipAddress, currentTime + 1000 * 60 * 60 * 6); if (ipAddress == null) return RESULTSTATUS_FALSE; ipAddressBuffer.append(ipAddress); return RESULTSTATUS_TRUE; } finally { activities.completeEventSequence(eventName); } } else { // Abort this fetch, since it's blocked. return RESULTSTATUS_NOTYETDETERMINED; } }