Class BaseResourceDownloader

java.lang.Object

net.adoptopenjdk.icedteaweb.resources.downloader.BaseResourceDownloader

All Implemented Interfaces:

ResourceDownloader

Direct Known Subclasses:

ExactVersionedResourceDownloader, RangeVersionedResourceDownloader, UnversionedResourceDownloader

abstract class BaseResourceDownloader
extends Object
implements ResourceDownloader

Base class for resource downloader.

Field Summary

Fields

Modifier and Type	Field	Description
private final List<Exception>	downLoadExceptions
private final List<URL>	downloadUrls
private static final Logger	LOG
protected final Resource	resource

Constructor Summary

Constructors

Constructor	Description
BaseResourceDownloader(Resource resource, List<URL> downloadUrls)

Method Summary

Modifier and Type	Method	Description
private void	checkForProxyError()
Resource	download()
private CompletableFuture<Resource>	downloadFrom(URL url)
private static boolean	endsWithBlankLine(String head)
private void	ensureRequestInterval()
private String	exceptionMessage()
private String	exceptionMessage(Exception e)
private <R> Optional<R>	futureToOptional(Future<R> future)
private CloseableConnection	getDownloadConnection(URL location)
private DownloadDetails	getDownloadDetails(CloseableConnection connection)
private DownloadDetails	getInputStreamFromDirectSocket(URL url)
private int	getTimeValue(String key)
protected abstract VersionId	getVersion(URL downloadFrom, String versionHeaderValue)
(package private) void	invalidateExistingEntryInCache(VersionId version)
protected abstract boolean	isUpToDate(URL resourceHref, VersionId version, long lastModified)
private Object[]	loadUrlWithInvalidHeaderBytes(URL url)
private long	parseLong(String s, long defaultValue)
private Resource	tryDownloading(URL downloadFrom)
private long	tryDownloading(DownloadDetails downloadDetails)

Methods inherited from class Object

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

Field Details

LOG

private static final Logger LOG

resource

protected final Resource resource

downloadUrls

private final List<URL> downloadUrls

downLoadExceptions

private final List<Exception> downLoadExceptions

Constructor Details

BaseResourceDownloader

BaseResourceDownloader(Resource resource,
 List<URL> downloadUrls)

Method Details

download

public Resource download()

Specified by:

download in interface ResourceDownloader

exceptionMessage

private String exceptionMessage()

exceptionMessage

private String exceptionMessage(Exception e)

checkForProxyError

private void checkForProxyError()

downloadFrom

private CompletableFuture<Resource> downloadFrom(URL url)

tryDownloading

private Resource tryDownloading(URL downloadFrom)
                         throws IOException

Throws:

IOException

ensureRequestInterval

private void ensureRequestInterval()

getDownloadConnection

private CloseableConnection getDownloadConnection(URL location)
                                           throws IOException

Throws:

IOException

getTimeValue

private int getTimeValue(String key)

tryDownloading

private long tryDownloading(DownloadDetails downloadDetails)
                     throws IOException

Throws:

IOException

getVersion

protected abstract VersionId getVersion(URL downloadFrom,
 String versionHeaderValue)

isUpToDate

protected abstract boolean isUpToDate(URL resourceHref,
 VersionId version,
 long lastModified)

getDownloadDetails

private DownloadDetails getDownloadDetails(CloseableConnection connection)
                                    throws IOException

Throws:

IOException

getInputStreamFromDirectSocket

private DownloadDetails getInputStreamFromDirectSocket(URL url)
                                                throws IOException

Throws:

IOException

loadUrlWithInvalidHeaderBytes

private Object[] loadUrlWithInvalidHeaderBytes(URL url)
                                        throws IOException

Throws:

IOException

endsWithBlankLine

private static boolean endsWithBlankLine(String head)

parseLong

private long parseLong(String s,
 long defaultValue)

futureToOptional

private <R> Optional<R> futureToOptional(Future<R> future)

invalidateExistingEntryInCache

void invalidateExistingEntryInCache(VersionId version)