Package ui.common.download

Klasse DownloadThread

java.lang.Object

java.lang.Thread

ui.common.download.DownloadThread

Alle implementierten Schnittstellen:

Runnable, RBCWrapperDelegate

public class DownloadThread
extends Thread
implements RBCWrapperDelegate

DownloadManager downloads a large file from a server. If the file is split into several chunks, it downloads them separately and merges them altogether again. Each chunk is checked against its content length provided by HTTP. The whole downloaded file is checked against the CRC checksum which is stored in the file with file extension crc.
Download file consists of:

 <chunk>.001 <chunk>.002 ... <chunk>.<N> <file>.crc
 

(where the chunks will be merged to <file>.<ext>) or

 <file>.<ext> <file>.crc
 

CRC file contents:

 filename=<file>.<ext> size=<fileSizeInBytes> crc32=<8DigitsHexCRC32>
 

Autor:

Ken Händel

Verschachtelte Klassen - Übersicht

Von Klasse geerbte verschachtelte Klassen/Schnittstellen java.lang.Thread

Thread.Builder, Thread.State, Thread.UncaughtExceptionHandler

Feldübersicht

Felder

Modifizierer und Typ	Feld	Beschreibung
private final Configuration	config
private final boolean	handleCrcAndSplits
static final String	ILLEGAL_FILENAME_CHARS
private final IDownloadListener	listener
private static final Logger	LOG
static final int	MAX_BUFFER_SIZE
private static final int	MAX_TRY_COUNT
static final String	REPLACEMENT_ILLEGAL_CHAR
private final URL	url

Von Klasse geerbte Felder java.lang.Thread

MAX_PRIORITY, MIN_PRIORITY, NORM_PRIORITY

Konstruktorübersicht

Konstruktoren

Konstruktor	Beschreibung
DownloadThread(Configuration cfg, IDownloadListener listener, URL url, boolean handleCrcAndSplits)

Methodenübersicht

Modifizierer und Typ	Methode	Beschreibung
static String	calculateCRC32(File file)
private boolean	checkCrc(File crcFile, File download)
private boolean	checkCrcOfAvailableFile(File file)
private boolean	checkExistingURL(URL currentURL)
private File	createLocalFile(URL currentURL)
private File	download(URL currentURL, boolean retry, boolean useAlreadyAvailableFile)
private File	downloadAndMergeChunks()
private URL	getCrcUrl()
private URL	getURL(int part)
private String	getURLUsingExt(String ext)
private boolean	hasNextPart(int part)
private boolean	isAlreadyAvailableFile(long contentLength, File availableFile)
private boolean	isSplittedInChunks()
private File	merge(File resultFile, File chunk)
private File	mergeChunks(List<File> chunks)
void	rbcProgressCallback(double progress)
void	run()

Von Klasse geerbte Methoden java.lang.Thread

activeCount, checkAccess, clone, countStackFrames, currentThread, dumpStack, enumerate, getAllStackTraces, getContextClassLoader, getDefaultUncaughtExceptionHandler, getId, getName, getPriority, getStackTrace, getState, getThreadGroup, getUncaughtExceptionHandler, holdsLock, interrupt, interrupted, isAlive, isDaemon, isInterrupted, isVirtual, join, join, join, join, ofPlatform, ofVirtual, onSpinWait, resume, setContextClassLoader, setDaemon, setDefaultUncaughtExceptionHandler, setName, setPriority, setUncaughtExceptionHandler, sleep, sleep, sleep, start, startVirtualThread, stop, suspend, threadId, toString, yield

Von Klasse geerbte Methoden java.lang.Object

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

Felddetails

LOG

private static final Logger LOG

ILLEGAL_FILENAME_CHARS

public static final String ILLEGAL_FILENAME_CHARS

Siehe auch:

• Konstantenfeldwerte

REPLACEMENT_ILLEGAL_CHAR

public static final String REPLACEMENT_ILLEGAL_CHAR

Siehe auch:

• Konstantenfeldwerte

MAX_BUFFER_SIZE

public static final int MAX_BUFFER_SIZE

Siehe auch:

• Konstantenfeldwerte

MAX_TRY_COUNT

private static final int MAX_TRY_COUNT

Siehe auch:

• Konstantenfeldwerte

config

private final Configuration config

url

private final URL url

listener

private final IDownloadListener listener

handleCrcAndSplits

private final boolean handleCrcAndSplits

Konstruktordetails

DownloadThread

public DownloadThread(Configuration cfg,
 IDownloadListener listener,
 URL url,
 boolean handleCrcAndSplits)

Methodendetails

run

public void run()

Angegeben von:

run in Schnittstelle Runnable

Setzt außer Kraft:

run in Klasse Thread

checkCrcOfAvailableFile

private boolean checkCrcOfAvailableFile(File file)

isSplittedInChunks

private boolean isSplittedInChunks()
                            throws MalformedURLException,
URISyntaxException

Löst aus:

MalformedURLException

URISyntaxException

hasNextPart

private boolean hasNextPart(int part)
                     throws MalformedURLException,
URISyntaxException

Löst aus:

MalformedURLException

URISyntaxException

getCrcUrl

private URL getCrcUrl()
               throws MalformedURLException,
URISyntaxException

Löst aus:

MalformedURLException

URISyntaxException

downloadAndMergeChunks

private File downloadAndMergeChunks()
                             throws IOException,
URISyntaxException

Löst aus:

IOException

URISyntaxException

getURL

private URL getURL(int part)
            throws MalformedURLException,
URISyntaxException

Löst aus:

MalformedURLException

URISyntaxException

checkExistingURL

private boolean checkExistingURL(URL currentURL)

download

private File download(URL currentURL,
 boolean retry,
 boolean useAlreadyAvailableFile)
               throws IOException

Löst aus:

IOException

isAlreadyAvailableFile

private boolean isAlreadyAvailableFile(long contentLength,
 File availableFile)

createLocalFile

private File createLocalFile(URL currentURL)
                      throws IOException

Löst aus:

IOException

mergeChunks

private File mergeChunks(List<File> chunks)
                  throws IOException

Löst aus:

IOException

merge

private File merge(File resultFile,
 File chunk)
            throws IOException

Löst aus:

IOException

checkCrc

private boolean checkCrc(File crcFile,
 File download)
                  throws IOException

Löst aus:

IOException

calculateCRC32

public static String calculateCRC32(File file)
                             throws IOException

Löst aus:

IOException

getURLUsingExt

private String getURLUsingExt(String ext)

rbcProgressCallback

public void rbcProgressCallback(double progress)

Angegeben von:

rbcProgressCallback in Schnittstelle RBCWrapperDelegate