Package org.apache.nifi.util.file.classloader

Class ClassLoaderUtils

java.lang.Object

org.apache.nifi.util.file.classloader.ClassLoaderUtils

public class ClassLoaderUtils
extends Object

Field Summary

Fields

Modifier and Type	Field	Description
(package private) static final org.slf4j.Logger	LOGGER

Constructor Summary

Constructors

Constructor	Description
ClassLoaderUtils()

Method Summary

Modifier and Type	Method	Description
protected static ClassLoader	createModuleClassLoader(URL[] modules, ClassLoader parentClassLoader)
static String	generateAdditionalUrlsFingerprint(Set<URL> urls, String classloaderIsolationKey)	Generate fingerprint from URLs associated with classpath resources
static ClassLoader	getCustomClassLoader(String modulePath, ClassLoader parentClassLoader, FilenameFilter filenameFilter)
private static long	getLastModified(String url)
static URL[]	getURLsForClasspath(String modulePath, FilenameFilter filenameFilter, boolean suppressExceptions)
static URL[]	getURLsForClasspath(Set<String> modulePaths, FilenameFilter filenameFilter, boolean suppressExceptions)
private static boolean	isNotBlank(String value)
protected static URL[]	toURLs(Set<String> modulePaths, FilenameFilter filenameFilter, boolean suppressExceptions)

Methods inherited from class java.lang.Object

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

Field Details

LOGGER

static final org.slf4j.Logger LOGGER

Constructor Details

ClassLoaderUtils

public ClassLoaderUtils()

Method Details

getCustomClassLoader

public static ClassLoader getCustomClassLoader(String modulePath,
 ClassLoader parentClassLoader,
 FilenameFilter filenameFilter)
                                        throws MalformedURLException

Throws:

MalformedURLException

getURLsForClasspath

public static URL[] getURLsForClasspath(String modulePath,
 FilenameFilter filenameFilter,
 boolean suppressExceptions)
                                 throws MalformedURLException

Parameters:

modulePath - a module path to get URLs from, the module path may be a comma-separated list of paths

filenameFilter - a filter to apply when a module path is a directory and performs a listing, a null filter will return all matches

suppressExceptions - indicates whether to suppress exceptions

Returns:

an array of URL instances representing all of the modules resolved from processing modulePath

Throws:

MalformedURLException - if a module path does not exist

getURLsForClasspath

public static URL[] getURLsForClasspath(Set<String> modulePaths,
 FilenameFilter filenameFilter,
 boolean suppressExceptions)
                                 throws MalformedURLException

Parameters:

modulePaths - one or modules paths to get URLs from, each module path may be a comma-separated list of paths

filenameFilter - a filter to apply when a module path is a directory and performs a listing, a null filter will return all matches

suppressExceptions - if true then all modules will attempt to be resolved even if some throw an exception, if false the first exception will be thrown

Returns:

an array of URL instances representing all of the modules resolved from processing modulePaths

Throws:

MalformedURLException - if a module path does not exist

isNotBlank

private static boolean isNotBlank(String value)

toURLs

protected static URL[] toURLs(Set<String> modulePaths,
 FilenameFilter filenameFilter,
 boolean suppressExceptions)
                       throws MalformedURLException

Throws:

MalformedURLException

generateAdditionalUrlsFingerprint

public static String generateAdditionalUrlsFingerprint(Set<URL> urls,
 String classloaderIsolationKey)

Generate fingerprint from URLs associated with classpath resources

Parameters:

urls - URLs used for generating fingerprint string

Returns:

Fingerprint string from provided URLs

getLastModified

private static long getLastModified(String url)

createModuleClassLoader

protected static ClassLoader createModuleClassLoader(URL[] modules,
 ClassLoader parentClassLoader)