Package com.sun.enterprise.deploy.shared

Class FileArchive

java.lang.Object
com.sun.enterprise.deploy.shared.AbstractReadableArchive
com.sun.enterprise.deploy.shared.FileArchive
All Implemented Interfaces:
AutoCloseable, org.glassfish.api.deployment.archive.Archive, org.glassfish.api.deployment.archive.ReadableArchive, org.glassfish.api.deployment.archive.WritableArchive
@Service(name="file") @PerLookup public class FileArchive extends AbstractReadableArchive implements org.glassfish.api.deployment.archive.WritableArchive
This implementation of the Archive interface maps to a directory/file structure.

If the directory underlying the FileArchive is created by GlassFish then FileArchive filters its contents so only those files more recent than the creation of the archive itself are visible to consumers.

The main motivation is to hide unwanted "left-over" files from previous deployments that might linger, especially on Windows, after the previous app had been undeployed. (Deployment uses a FileArchive to extract the user's JAR-based archive into the applications directory.) Historically such left-over files arise after GlassFish expands an archive into its exploded form but then some code opens but does not close a file in that exploded directory tree.

An open left-over file can be overwritten-in-place on Windows, and this happens when a caller invokes putNextEntry(java.lang.String) to create a new entry (file) inside the archive. But a left-over file that is not in the new app but is still open by GlassFish cannot be deleted or renamed on Windows and so it will remain in the expansion directory. Such left-over files, if not filtered out, can confuse GlassFish and the application. By "stamping" the archive creation date we can filter out such old, left-over files.

To support this feature, when FileArchive creates a directory it stores a marker file there, the contents of which records the creation date/time of the archive. We cannot just use the lastModified value for the top-level directory. Users might legitimately use "touch .reload" in the applications/appName directory to trigger a dynamic reload of the app. If .reload does not already exist then touch creates it, and this would update the lastModified of the directory file.

Author:
Jerome Dochez, Tim Quinn

  • Constructor Details

  • Method Details

    • open

      public void open(URI uri) throws IOException
      Open an abstract archive
      Specified by:
      open in interface org.glassfish.api.deployment.archive.ReadableArchive
      Parameters:
      uri - path to the archive
      Throws:
      IOException

    • open

      public void open(String uri) throws IOException
      Parameters:
      uri - a string representing URI
      Throws:
      IOException
      See Also:

    • getArchiveSize

      public long getArchiveSize() throws NullPointerException, SecurityException
      Get the size of the archive
      Specified by:
      getArchiveSize in interface org.glassfish.api.deployment.archive.Archive
      Returns:
      tje the size of this archive or -1 on error
      Throws:
      NullPointerException
      SecurityException

    • create

      public void create(URI uri) throws IOException
      creates a new abstract archive with the given path
      Specified by:
      create in interface org.glassfish.api.deployment.archive.WritableArchive
      Parameters:
      uri - path to create the archive
      Throws:
      IOException

    • close

      public void close() throws IOException
      close the abstract archive
      Specified by:
      close in interface org.glassfish.api.deployment.archive.Archive
      Specified by:
      close in interface AutoCloseable
      Throws:
      IOException

    • delete

      public boolean delete()
      delete the archive
      Specified by:
      delete in interface org.glassfish.api.deployment.archive.ReadableArchive

    • isDirectory

      public boolean isDirectory(String name)
      Specified by:
      isDirectory in interface org.glassfish.api.deployment.archive.Archive

    • entries

      public Enumeration<String> entries()
      Specified by:
      entries in interface org.glassfish.api.deployment.archive.Archive
      Returns:
      an @see java.util.Enumeration of entries in this abstract archive

    • getDirectories

      public Collection<String> getDirectories() throws IOException
      Returns the enumeration of first level directories in this archive
      Specified by:
      getDirectories in interface org.glassfish.api.deployment.archive.Archive
      Returns:
      enumeration of directories under the root of this archive
      Throws:
      IOException

    • entries

      public Enumeration<String> entries(String prefix)
      Returns an enumeration of the module file entries with the specified prefix. All elements in the enumeration are of type String. Each String represents a file name relative to the root of the module.
      Specified by:
      entries in interface org.glassfish.api.deployment.archive.Archive
      Parameters:
      prefix - the prefix of entries to be included
      Returns:
      an enumeration of the archive file entries.

    • exists

      public boolean exists()
      Specified by:
      exists in interface org.glassfish.api.deployment.archive.ReadableArchive
      Returns:
      true if this archive exists

    • getSubArchive

      public org.glassfish.api.deployment.archive.ReadableArchive getSubArchive(String name) throws IOException
      create or obtain an embedded archive within this abstraction.
      Specified by:
      getSubArchive in interface org.glassfish.api.deployment.archive.ReadableArchive
      Parameters:
      name - name of the embedded archive.
      Throws:
      IOException

    • createSubArchive

      public org.glassfish.api.deployment.archive.WritableArchive createSubArchive(String name) throws IOException
      create or obtain an embedded archive within this abstraction.
      Specified by:
      createSubArchive in interface org.glassfish.api.deployment.archive.WritableArchive
      Parameters:
      name - name of the embedded archive.
      Throws:
      IOException

    • exists

      public boolean exists(String name) throws IOException
      Returns the existence of the given entry name The file name must be relative to the root of the module.
      Specified by:
      exists in interface org.glassfish.api.deployment.archive.ReadableArchive
      Parameters:
      name - the file name relative to the root of the module.
      Returns:
      the existence the given entry name.
      Throws:
      IOException

    • getEntry

      public InputStream getEntry(String name) throws IOException
      Specified by:
      getEntry in interface org.glassfish.api.deployment.archive.ReadableArchive
      Parameters:
      name - the entry name
      Returns:
      a @see java.io.InputStream for an existing entry in the current abstract archive
      Throws:
      IOException

    • getEntrySize

      public long getEntrySize(String name)
      Returns the entry size for a given entry name or 0 if not known
      Specified by:
      getEntrySize in interface org.glassfish.api.deployment.archive.ReadableArchive
      Parameters:
      name - the entry name
      Returns:
      the entry size

    • getManifest

      public Manifest getManifest() throws IOException
      Specified by:
      getManifest in interface org.glassfish.api.deployment.archive.Archive
      Returns:
      the manifest information for this abstract archive
      Throws:
      IOException

    • getURI

      public URI getURI()
      Returns the URI used to create or open the underlyong archive
      Specified by:
      getURI in interface org.glassfish.api.deployment.archive.Archive
      Returns:
      the URI for this archive.

    • renameTo

      public boolean renameTo(String name)
      rename the archive
      Specified by:
      renameTo in interface org.glassfish.api.deployment.archive.ReadableArchive
      Parameters:
      name - the archive name

    • putNextEntry

      public org.glassfish.api.deployment.archive.WritableArchiveEntry putNextEntry(String name) throws IOException
      Specified by:
      putNextEntry in interface org.glassfish.api.deployment.archive.WritableArchive
      Throws:
      IOException

    • getName

      public String getName()
      Returns the name portion of the archive's URI.

      For FileArhive the name is all of the path that follows the last slash (ignoring a slash at the end of the path).

      Here are some example archive names for the specified FileArchive paths:

      • /a/b/c/d/ -> d
      • /a/b/c/d -> d
      • /a/b/c.jar -> c.jar
      Specified by:
      getName in interface org.glassfish.api.deployment.archive.Archive
      Returns:
      the name of the archive

    • supportsElementsOverwriting

      public boolean supportsElementsOverwriting()
      Returns:
      true if this archive abstraction supports overwriting of elements

    • deleteEntry

      public boolean deleteEntry(String name)
      delete an entry in the archive
      Parameters:
      name - the entry name
      Returns:
      true if the entry was successfully deleted