Package io.quarkus.runtime.util

Class ClassPathUtils

java.lang.Object

io.quarkus.runtime.util.ClassPathUtils

public class ClassPathUtils
extends Object

Constructor Summary

Constructors

Constructor	Description
ClassPathUtils()

Method Summary

Modifier and Type	Method	Description
static void	consumeAsPath(URL url, Consumer<Path> consumer)	Attempts to represent a resource as a local file system path to be processed by a consumer.
static void	consumeAsPaths(ClassLoader cl, String resource, Consumer<Path> consumer)	Locates specified resources on the classpath and attempts to represent them as local file system paths to be processed by a consumer.
static void	consumeAsPaths(String resource, Consumer<Path> consumer)	Invokes consumeAsPaths(ClassLoader, String, Consumer) passing in an instance of the current thread's context classloader as the classloader from which to load the resources.
static void	consumeAsStreams(ClassLoader cl, String resource, Consumer<InputStream> consumer)	Locates all the occurrences of a resource on the classpath of the provided classloader and invokes the consumer providing the input streams for each located resource.
static void	consumeAsStreams(String resource, Consumer<InputStream> consumer)	Invokes consumeAsStreams(ClassLoader, String, Consumer) passing in an instance of the current thread's context classloader as the classloader from which to load the resources.
static void	consumeStream(URL url, Consumer<InputStream> consumer)	Invokes a consumer providing the input streams to read the content of the URL.
static <R> R	processAsPath(URL url, Function<Path,R> function)	Attempts to represent a resource as a local file system path to be processed by a function.
static <R> R	readStream(URL url, Function<InputStream,R> function)	Invokes a function providing the input streams to read the content of the URL.
static Path	toLocalPath(URL url)	Translates a URL to local file system path.

Methods inherited from class java.lang.Object

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

Constructor Detail

ClassPathUtils

public ClassPathUtils()

Method Detail

consumeAsStreams

public static void consumeAsStreams(String resource,
                                    Consumer<InputStream> consumer)
                             throws IOException

Invokes consumeAsStreams(ClassLoader, String, Consumer) passing in an instance of the current thread's context classloader as the classloader from which to load the resources.

Parameters:

resource - resource path

consumer - resource input stream consumer

Throws:

IOException - in case of an IO failure

consumeAsStreams

public static void consumeAsStreams(ClassLoader cl,
                                    String resource,
                                    Consumer<InputStream> consumer)
                             throws IOException

Locates all the occurrences of a resource on the classpath of the provided classloader and invokes the consumer providing the input streams for each located resource. The consumer does not have to close the provided input stream. This method was introduced to avoid calling URL.openStream() which in case the resource is found in an archive (such as JAR) locks the containing archive even if the caller properly closes the stream.

Parameters:

cl - classloader to load the resources from

resource - resource path

consumer - resource input stream consumer

Throws:

IOException - in case of an IO failure

consumeAsPaths

public static void consumeAsPaths(String resource,
                                  Consumer<Path> consumer)
                           throws IOException

Invokes consumeAsPaths(ClassLoader, String, Consumer) passing in an instance of the current thread's context classloader as the classloader from which to load the resources.

Parameters:

resource - resource path

consumer - resource path consumer

Throws:

IOException - in case of an IO failure

consumeAsPaths

public static void consumeAsPaths(ClassLoader cl,
                                  String resource,
                                  Consumer<Path> consumer)
                           throws IOException

Locates specified resources on the classpath and attempts to represent them as local file system paths to be processed by a consumer. If a resource appears to be an actual file or a directory, it is simply passed to the consumer as-is. If a resource is an entry in a JAR, the entry will be resolved as an instance of Path in a FileSystem representing the JAR. If the protocol of the URL representing the resource is neither 'file' nor 'jar', the method will fail with an exception.

Parameters:

cl - classloader to load the resources from

resource - resource path

consumer - resource path consumer

Throws:

IOException - in case of an IO failure

consumeAsPath

public static void consumeAsPath(URL url,
                                 Consumer<Path> consumer)

Attempts to represent a resource as a local file system path to be processed by a consumer. If a resource appears to be an actual file or a directory, it is simply passed to the consumer as-is. If a resource is an entry in a JAR, the entry will be resolved as an instance of Path in a FileSystem representing the JAR. If the protocol of the URL representing the resource is neither 'file' nor 'jar', the method will fail with an exception.

Parameters:

url - resource url

consumer - resource path consumer

processAsPath

public static <R> R processAsPath(URL url,
                                  Function<Path,R> function)

Attempts to represent a resource as a local file system path to be processed by a function. If a resource appears to be an actual file or a directory, it is simply passed to the function as-is. If a resource is an entry in a JAR, the entry will be resolved as an instance of Path in a FileSystem representing the JAR. If the protocol of the URL representing the resource is neither 'file' nor 'jar', the method will fail with an exception.

Parameters:

url - resource url

function - resource path function

consumeStream

public static void consumeStream(URL url,
                                 Consumer<InputStream> consumer)
                          throws IOException

Invokes a consumer providing the input streams to read the content of the URL. The consumer does not have to close the provided input stream. This method was introduced to avoid calling URL.openStream() which in case the resource is found in an archive (such as JAR) locks the containing archive even if the caller properly closes the stream.

Parameters:

url - URL

consumer - input stream consumer

Throws:

IOException - in case of an IO failure

readStream

public static <R> R readStream(URL url,
                               Function<InputStream,R> function)
                        throws IOException

Invokes a function providing the input streams to read the content of the URL. The function does not have to close the provided input stream. This method was introduced to avoid calling URL.openStream() which in case the resource is found in an archive (such as JAR) locks the containing archive even if the caller properly closes the stream.

Parameters:

url - URL

function - input stream processing function

Throws:

IOException - in case of an IO failure

toLocalPath

public static Path toLocalPath(URL url)

Translates a URL to local file system path. In case the the URL couldn't be translated to a file system path, an instance of IllegalArgumentException will be thrown.

Parameters:

url - URL

Returns:

local file system path