Package app.coronawarn.server.services.distribution.assembly.structure.file

Class FileOnDiskWithChecksum

java.lang.Object

app.coronawarn.server.services.distribution.assembly.structure.WritableOnDisk

app.coronawarn.server.services.distribution.assembly.structure.file.FileOnDisk

app.coronawarn.server.services.distribution.assembly.structure.file.FileOnDiskWithChecksum

All Implemented Interfaces:

File<WritableOnDisk>, Writable<WritableOnDisk>

Direct Known Subclasses:

ArchiveOnDisk, TemporaryExposureKeyExportFile

public class FileOnDiskWithChecksum
extends FileOnDisk

A File that can be written to disk, alongside a second File containing the hashsum of the actual FileOnDisk.
The checksum file resides in the same folder as the actual file, and will use the same file name with suffix CHECKSUM_FILE_SUFFIX.

Field Summary

Fields

Modifier and Type	Field	Description
static String	CHECKSUM_FILE_SUFFIX	The file suffix for checksum files.

Constructor Summary

Constructors

Constructor	Description
FileOnDiskWithChecksum(String name, byte[] bytes)	Creates a new file on disk.

Method Summary

Modifier and Type	Method	Description
static Path	buildChecksumPathForFile(Path file)	Constructs and returns the checksum Path handle for a given file.
protected byte[]	getBytesForChecksum()	Fetches the target bytes for computation of the checksum.
static boolean	isChecksumFile(Path path)	Checks whether the given path translate to a checksum file.
void	write()	Creates a File with name Writable.getName() on disk and writes the bytes of this File into that File.

Methods inherited from class app.coronawarn.server.services.distribution.assembly.structure.file.FileOnDisk

getBytes, getRoot, prepare, setBytes

Methods inherited from class app.coronawarn.server.services.distribution.assembly.structure.WritableOnDisk

getFileOnDisk, getName, getParent, isArchive, isDirectory, isFile, setParent

Methods inherited from class java.lang.Object

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

Methods inherited from interface app.coronawarn.server.services.distribution.assembly.structure.Writable

getName, getParent, isArchive, isDirectory, isFile, setParent

Field Detail

CHECKSUM_FILE_SUFFIX

public static final String CHECKSUM_FILE_SUFFIX

The file suffix for checksum files.

See Also:

Constant Field Values

Constructor Detail

FileOnDiskWithChecksum

public FileOnDiskWithChecksum(String name,
                              byte[] bytes)

Creates a new file on disk. A separate checksum will be generated automatically in the same folder.

Parameters:

name - the name of the file

bytes - the content of the file

Method Detail

write

public void write()

Description copied from class: FileOnDisk

Creates a File with name Writable.getName() on disk and writes the bytes of this File into that File.

Specified by:

write in interface Writable<WritableOnDisk>

Overrides:

write in class FileOnDisk

getBytesForChecksum

protected byte[] getBytesForChecksum()

Fetches the target bytes for computation of the checksum. Will take the bytes of its FileOnDisk.

Returns:

the checksum bytes

isChecksumFile

public static boolean isChecksumFile(Path path)

Checks whether the given path translate to a checksum file.

Parameters:

path - the path handle of the checksum file

Returns:

true if it is a checksum file, false otherwise

buildChecksumPathForFile

public static Path buildChecksumPathForFile(Path file)

Constructs and returns the checksum Path handle for a given file.

Parameters:

file - the file to create the checksum path for

Returns:

the checksum path, which incorporates the original file + the checksum suffix.