org.jini.rio.boot

Class BootUtil

java.lang.Object

org.jini.rio.boot.BootUtil

public class BootUtil
extends Object

Provides static convenience methods for use in configuration files. This class cannot be instantiated.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	BootUtil.NetworkInterfaceWrapper
static class	BootUtil.NetworkSnapshot
static class	BootUtil.NetworkTuple

Method Summary

Modifier and Type	Method and Description
static String	arrayToCommaDelimitedString(Object[] arr) Convenience method to return a String array as a CSV String.
static String	arrayToDelimitedString(Object[] arr, String delim) Convenience method to return a String array as a delimited (e.g.
static String	formatDuration(long duration)
static String	getAnonymousPort() Get an anonymous port
static int	getAvailablePort(String hostname, String portRange)
static String	getCodebase(String[] jars, String protocol, String port) Return the codebase for the provided JAR names and port.
static String	getCodebase(String[] jars, String protocol, String address, String port) Return the codebase for the provided JAR names, port and address
static String	getHostAddress() Return the local host address using java.net.InetAddress.getLocalHost().getHostAddress()
static NetworkInterface[]	getNetworkInterfaces()
static String	getPortInRange(int minPort, int maxPort) Get a free port in supplied port range.
static URL	getResourceURL(String name, String locatorBaseDir) Loads the requested resource and returns its URL.
static String	getStackTrace(Throwable t)
static String[]	toArray(String arg) Convert comma delimited and/or space String to array of Strings
static LookupLocator[]	toLookupLocators(String lookupLocatorURLs) Parse a comma delimited LookupLocator URLs and build array of LookupLocator out of it.
static String	toLookupLocatorURLs(LookupLocator[] lookupLocators, boolean removeProtocolPrefix) Takes an array of LookupLocator builds a comma seperated string of urls out of it.
static List<URL>	toURLs(String element)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

getCodebase

public static String getCodebase(String[] jars,
                                 String protocol,
                                 String port)
                          throws UnknownHostException

Return the codebase for the provided JAR names and port. This method will first get the IP Address of the machine using java.net.InetAddress.getLocalHost().getHostAddress(), then construct the codebase using the host address and the port for each jar in the array of jars.

Parameters:

jars - The JAR names to use

port - The port to use when constructing the codebase

Returns:

The codebase as a space-delimited String for the provided JARs

Throws:

UnknownHostException - if no IP address for the local host could be found.

getCodebase

public static String getCodebase(String[] jars,
                                 String protocol,
                                 String address,
                                 String port)

Return the codebase for the provided JAR names, port and address

Parameters:

jars - Array of JAR names

address - The address to use when constructing the codebase

port - The port to use when constructing the codebase

Returns:

the codebase for the JAR

getHostAddress

public static String getHostAddress()
                             throws UnknownHostException

Return the local host address using java.net.InetAddress.getLocalHost().getHostAddress()

Returns:

The local host address

Throws:

UnknownHostException - if no IP address for the local host could be found.

getAnonymousPort

public static String getAnonymousPort()
                               throws IOException

Get an anonymous port

Returns:

An anonymous port created by instantiating a java.net.ServerSocket with a port of 0

Throws:

IOException

getPortInRange

public static String getPortInRange(int minPort,
                                    int maxPort)
                             throws IOException

Get a free port in supplied port range. minPort <= freePort <=maxPort The max port should be up to 65536 value.

Parameters:

minPort - the minimum port number of the port range to scan.

maxPort - the maximum port number of the port range to scan.

Returns:

a free socket port.

Throws:

IOException

getAvailablePort

public static int getAvailablePort(String hostname,
                                   String portRange)
                            throws IOException

Throws:

IOException

toURLs

public static List<URL> toURLs(String element)
                        throws MalformedURLException

Throws:

MalformedURLException

arrayToCommaDelimitedString

public static String arrayToCommaDelimitedString(Object[] arr)

Convenience method to return a String array as a CSV String. E.g. useful for toString() implementations.

Parameters:

arr - array to display. Elements may be of any type (toString will be called on each element).

arrayToDelimitedString

public static String arrayToDelimitedString(Object[] arr,
                                            String delim)

Convenience method to return a String array as a delimited (e.g. CSV) String. E.g. useful for toString() implementations.

Parameters:

arr - array to display. Elements may be of any type (toString will be called on each element).

delim - delimiter to use (probably a ",")

toArray

public static String[] toArray(String arg)

Convert comma delimited and/or space String to array of Strings

toLookupLocators

public static LookupLocator[] toLookupLocators(String lookupLocatorURLs)

Parse a comma delimited LookupLocator URLs and build array of LookupLocator out of it. For example: "host1:4180,host2:4180,host3:4180"

Parameters:

lookupLocatorURLs - List of LookupLocators urls, separates by ",".

Returns:

LookupLocator[] Array of initilized LookupLocator.

toLookupLocatorURLs

public static String toLookupLocatorURLs(LookupLocator[] lookupLocators,
                                         boolean removeProtocolPrefix)

Takes an array of LookupLocator builds a comma seperated string of urls out of it. Return example (removeProtocolPrefix==true): "host1:4180,host2:4180,host3:4180" Return example (removeProtocolPrefix==false): "jini://host1:4180/,jini://host2:4180/,jini://host3:4180/"

Parameters:

lookupLocators - The locators

removeProtocolPrefix - whether the jini:// prefix should be removed

Returns:

URL to lookup locator

formatDuration

public static String formatDuration(long duration)

getStackTrace

public static String getStackTrace(Throwable t)

getNetworkInterfaces

public static NetworkInterface[] getNetworkInterfaces()
                                               throws SocketException

Returns:

Available network interfaces

Throws:

SocketException

Since:

11.0

getResourceURL

public static URL getResourceURL(String name,
                                 String locatorBaseDir)

Loads the requested resource and returns its URL. Several attempts to search for the requested resource: 1. It calls the (current thread) contextClassLoader.getResource(config/schemas/yyy.xml). if not found --> 1.1 It calls the (current thread) contextClassLoader.getResource(yyy.xml). if not found --> 2. It calls this classLoader.getResource(config/schemas/yyy.xml) (e.g. if running in AppServer) if not found --> 2.1 It calls this classLoader.getResource(yyy.xml) (e.g. if running in AppServer) if not found AND useOnlyClasspath == false (expensive operation!) --> 2.2 if the resource was not found, instead of returning null, we attempt to load it as a File IF it was passed as file format e.g. D:/gigaspaces/GenericJDBCProperties/HSQLProperties/jdbc.properties 3. Uses the com.gigaspaces.start.Locator.locate(yyy.xml) that searches recursively under the GS, using root file system. Not the default behavior Notes: In some scenarios, the ResourceLoader does not use the right class loader and returns no resource. E.g. when running within application server the config and jar files loaded using the Thread.currentThread().getContextClassLoader().getResource() but since the lower level CL is used (of the APPServer) we should try also and use the getClass().getResource() in case the first attempt failed to find the resource. A third attempt, if the resource still was not found, it will be using the Locator facility that searches for the resource (using only the resource name) under a base directory in the file system.

Parameters:

name - name of resource to load

locatorBaseDir - if not null we will try to search for the resource in the file system locatorBaseDir, we will try to recursively search under the locatorBaseDir as the base search path. By default, false.

Returns:

URL containing the resource