io.apigee.trireme.kernel.fs

Class AdvancedFilesystem

java.lang.Object

io.apigee.trireme.kernel.fs.BasicFilesystem

io.apigee.trireme.kernel.fs.AdvancedFilesystem

public class AdvancedFilesystem
extends BasicFilesystem

This class extends basic filesystem support to use Java 7 features for file modes and ownership, open flags to properly support atomic file opening, and other improvements.

Field Summary

Fields

Modifier and Type	Field and Description
static java.util.regex.Pattern	NOT_DIRECTORY_MSG

Fields inherited from class io.apigee.trireme.kernel.fs.BasicFilesystem

descriptors, FIRST_FD, nextFd

Constructor Summary

Constructors

Constructor and Description
AdvancedFilesystem()

Method Summary

Modifier and Type	Method and Description
void	chmod(java.io.File f, java.lang.String origPath, int mode, int umask, boolean noFollow)
void	chown(java.io.File file, java.lang.String origPath, java.lang.String uid, java.lang.String gid, boolean noFollow)
void	ftruncate(int fd, long len)
void	link(java.io.File targetFile, java.lang.String targetPath, java.io.File linkFile, java.lang.String linkPath)
void	mkdir(java.io.File file, java.lang.String origPath, int mode, int umask) Create the directory atomically and with the right permissions.
int	open(java.io.File fp, java.lang.String origPath, int flags, int mode, int umask) In Java 7 we can open the file in one operation, which makes the atomic operations that NPM depends on actually work.
java.util.List<java.lang.String>	readdir(java.io.File f, java.lang.String origPath)
java.lang.String	readlink(java.io.File file, java.lang.String origPath)
void	rename(java.io.File oldFile, java.lang.String oldPath, java.io.File newFile, java.lang.String newPath) Use Files to attempt an atomic rename.
void	rmdir(java.io.File file, java.lang.String origPath)
FileStats	stat(java.io.File f, java.lang.String origPath, boolean noFollow)
void	symlink(java.io.File destFile, java.lang.String destPath, java.io.File srcFile, java.lang.String srcPath)
void	unlink(java.io.File file, java.lang.String origPath) Unlink and return the exactly-correct error messages.
void	utimes(java.io.File f, java.lang.String origPath, long atime, long mtime)

Methods inherited from class io.apigee.trireme.kernel.fs.BasicFilesystem

cleanup, close, ensureHandle, ensureRegularFileHandle, fchmod, fchown, fstat, fsync, futimes, getPosition, read, updatePosition, write

Methods inherited from class java.lang.Object

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

Field Detail

NOT_DIRECTORY_MSG

public static final java.util.regex.Pattern NOT_DIRECTORY_MSG

Constructor Detail

AdvancedFilesystem

public AdvancedFilesystem()

Method Detail

open

public int open(java.io.File fp,
                java.lang.String origPath,
                int flags,
                int mode,
                int umask)
         throws OSException

In Java 7 we can open the file in one operation, which makes the atomic operations that NPM depends on actually work. In Java 6 we had race conditions.

Overrides:

open in class BasicFilesystem

Throws:

OSException

ftruncate

public void ftruncate(int fd,
                      long len)
               throws OSException

Overrides:

ftruncate in class BasicFilesystem

Throws:

OSException

rename

public void rename(java.io.File oldFile,
                   java.lang.String oldPath,
                   java.io.File newFile,
                   java.lang.String newPath)
            throws OSException

Use Files to attempt an atomic rename.

Overrides:

rename in class BasicFilesystem

Throws:

OSException

unlink

public void unlink(java.io.File file,
                   java.lang.String origPath)
            throws OSException

Unlink and return the exactly-correct error messages.

Overrides:

unlink in class BasicFilesystem

Throws:

OSException

rmdir

public void rmdir(java.io.File file,
                  java.lang.String origPath)
           throws OSException

Overrides:

rmdir in class BasicFilesystem

Throws:

OSException

readdir

public java.util.List<java.lang.String> readdir(java.io.File f,
                                                java.lang.String origPath)
                                         throws OSException

Overrides:

readdir in class BasicFilesystem

Throws:

OSException

mkdir

public void mkdir(java.io.File file,
                  java.lang.String origPath,
                  int mode,
                  int umask)
           throws OSException

Create the directory atomically and with the right permissions.

Overrides:

mkdir in class BasicFilesystem

Throws:

OSException

stat

public FileStats stat(java.io.File f,
                      java.lang.String origPath,
                      boolean noFollow)
               throws OSException

Overrides:

stat in class BasicFilesystem

Throws:

OSException

utimes

public void utimes(java.io.File f,
                   java.lang.String origPath,
                   long atime,
                   long mtime)
            throws OSException

Overrides:

utimes in class BasicFilesystem

Throws:

OSException

chmod

public void chmod(java.io.File f,
                  java.lang.String origPath,
                  int mode,
                  int umask,
                  boolean noFollow)
           throws OSException

Overrides:

chmod in class BasicFilesystem

Throws:

OSException

chown

public void chown(java.io.File file,
                  java.lang.String origPath,
                  java.lang.String uid,
                  java.lang.String gid,
                  boolean noFollow)
           throws OSException

Overrides:

chown in class BasicFilesystem

Throws:

OSException

link

public void link(java.io.File targetFile,
                 java.lang.String targetPath,
                 java.io.File linkFile,
                 java.lang.String linkPath)
          throws OSException

Overrides:

link in class BasicFilesystem

Throws:

OSException

symlink

public void symlink(java.io.File destFile,
                    java.lang.String destPath,
                    java.io.File srcFile,
                    java.lang.String srcPath)
             throws OSException

Overrides:

symlink in class BasicFilesystem

Throws:

OSException

readlink

public java.lang.String readlink(java.io.File file,
                                 java.lang.String origPath)
                          throws OSException

Overrides:

readlink in class BasicFilesystem

Throws:

OSException