com.facebook.buck.util.hashing

Class FilePathHashLoader

java.lang.Object

com.facebook.buck.util.hashing.FilePathHashLoader

All Implemented Interfaces:

FileHashLoader

public class FilePathHashLoader
extends Object
implements FileHashLoader

A FileHashLoader that only hashes the files' paths without reading their contents.

If file's hash needs to be changed, for example to reflect changes to the file's contents, the file's path can be specified in a set of modified files. Files specified in this set will get new unique hashes based on their paths distinct from the hashes they would get if they were omitted from the set.

Constructor Summary

Constructors

Constructor and Description
FilePathHashLoader(Path defaultCellRoot, com.google.common.collect.ImmutableSet<Path> assumeModifiedFiles, boolean allowSymlinks)

Method Summary

Modifier and Type	Method and Description
com.google.common.hash.HashCode	get(Path root)
com.google.common.hash.HashCode	getForArchiveMember(Path relativeArchivePath, Path memberPath)
long	getSize(Path path)

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.util.hashing.FileHashLoader

get, getForArchiveMember, getSize

Constructor Detail

FilePathHashLoader

public FilePathHashLoader(Path defaultCellRoot,
                          com.google.common.collect.ImmutableSet<Path> assumeModifiedFiles,
                          boolean allowSymlinks)
                   throws IOException

Throws:

IOException

Method Detail

get

public com.google.common.hash.HashCode get(Path root)
                                    throws IOException

Specified by:

get in interface FileHashLoader

Throws:

IOException

getSize

public long getSize(Path path)
             throws IOException

Specified by:

getSize in interface FileHashLoader

Throws:

IOException

getForArchiveMember

public com.google.common.hash.HashCode getForArchiveMember(Path relativeArchivePath,
                                                           Path memberPath)

Specified by:

getForArchiveMember in interface FileHashLoader