com.facebook.buck.file.downloader.impl

Class RetryingDownloader

java.lang.Object

com.facebook.buck.file.downloader.impl.RetryingDownloader

All Implemented Interfaces:

Toolchain, Downloader

public class RetryingDownloader
extends Object
implements Downloader

Downloader decorator which adds retry logic to any decorated downloader instance.

TODO(ttsugrii): support flexible backoff strategy (at least exponential).

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	RetryingDownloader.RetryingDownloaderException

Field Summary

Fields inherited from interface com.facebook.buck.file.downloader.Downloader

DEFAULT_NAME

Method Summary

Modifier and Type	Method and Description
boolean	fetch(BuckEventBus eventBus, URI uri, Path output) Download the given URL and, upon a successful download, place it in output.

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.facebook.buck.file.downloader.Downloader

getName

Method Detail

fetch

public boolean fetch(BuckEventBus eventBus,
                     URI uri,
                     Path output)
              throws IOException

Description copied from interface: Downloader

Download the given URL and, upon a successful download, place it in output. Note that if a Downloader can't handle the URI.scheme then false will be returned.

Specified by:

fetch in interface Downloader

Returns:

Whether or not the download succeeded.

Throws:

IOException - Should an exception be thrown when downloading.