Package weka.core.packageManagement

Class DefaultPackageManager

java.lang.Object

weka.core.packageManagement.PackageManager

weka.core.packageManagement.DefaultPackageManager

public class DefaultPackageManager
extends PackageManager

A concrete implementation of PackageManager that uses Java properties files/class to manage package meta data. Assumes that meta data for individual packages is stored on the central repository (accessible via http) in properties files that live in a subdirectory with the same name as the package. Furthermore, each property file is assumed to be named as the version number of the package in question with a ".props" extension. A "Latest.props" file should exist for each package and should always hold meta data on the latest version of a package.

Version:

$Revision: 52515 $

Author:

Mark Hall (mhall{[at]}pentaho{[dot]}com)

Constructor Summary

Constructors

Constructor	Description
DefaultPackageManager()	Constructor

Method Summary

Modifier and Type	Method	Description
void	applySettings(Settings settings)	Apply settings.
static void	deleteDir(File dir, PrintStream... progress)
List<Dependency>	getAllDependenciesForPackage(Package target, Map<String,List<Dependency>> conflicts)	Gets a full list of packages (encapsulated in Dependency objects) that are required by directly and indirectly by the named target package.
List<Package>	getAllPackages(PrintStream... progress)	Get all packages that the system knows about (i.e.
List<Package>	getAvailablePackages()	Get a list of packages that are not currently installed.
Defaults	getDefaultSettings()	Get the default settings for the default package manager
Package	getInstalledPackageInfo(String packageName)	Get package information on the named installed package.
List<Package>	getInstalledPackages()	Get a list of installed packages.
Package	getPackageArchiveInfo(String packageArchivePath)	Get package information from the supplied package archive file.
Package	getRepositoryPackageInfo(String packageName)	Get package information on the named package from the repository.
Package	getRepositoryPackageInfo(String packageName, Object version)	Get package information on the named package from the repository.
byte[]	getRepositoryPackageMetaDataOnlyAsZip(PrintStream... progress)	Gets an array of bytes containing a zip of all the repository meta data and supporting files.
byte[]	getRepositoryPackageMetaDataOnlyAsZipLegacy(PrintStream... progress)	Gets an array of bytes containing a zip of all the repository meta data and supporting files using the legacy approach.
List<Object>	getRepositoryPackageVersions(String packageName)	Get a list of available versions of the named package.
Package	getURLPackageInfo(URL packageURL)	Get package information on the package at the given URL.
String	installPackageFromArchive(String packageArchivePath, PrintStream... progress)	Install a package from an archive on the local file system.
void	installPackageFromRepository(String packageName, Object version, PrintStream... progress)	Install a package sourced from the repository.
String	installPackageFromURL(URL packageURL, PrintStream... progress)	Install a package sourced from a given URL.
void	installPackages(List<Package> toInstall, PrintStream... progress)	Installs all the packages in the supplied list.
static void	main(String[] args)
void	uninstallPackage(String packageName, PrintStream... progress)	Uninstall a package.

Methods inherited from class weka.core.packageManagement.PackageManager

create, establishProxy, getBaseSystemName, getBaseSystemVersion, getPackageHome, getPackageRepositoryURL, getProxy, setBaseSystemName, setBaseSystemVersion, setPackageHome, setPackageRepositoryURL, setProxy, setProxyAuthentication, setProxyPassword, setProxyUsername

Methods inherited from class java.lang.Object

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

Constructor Detail

DefaultPackageManager

public DefaultPackageManager()

Constructor

Method Detail

getDefaultSettings

public Defaults getDefaultSettings()

Get the default settings for the default package manager

Overrides:

getDefaultSettings in class PackageManager

Returns:

the default settings

applySettings

public void applySettings(Settings settings)

Apply settings.

Overrides:

applySettings in class PackageManager

Parameters:

settings - the settings to apply

getURLPackageInfo

public Package getURLPackageInfo(URL packageURL)
                          throws Exception

Get package information on the package at the given URL.

Specified by:

getURLPackageInfo in class PackageManager

Parameters:

packageURL - the URL to the package.

Returns:

a Package object encapsulating the package meta data

Throws:

Exception - if the package meta data can't be retrieved.

getRepositoryPackageInfo

public Package getRepositoryPackageInfo(String packageName)
                                 throws Exception

Get package information on the named package from the repository. If multiple versions of the package are available, it assumes that the most recent is required.

Specified by:

getRepositoryPackageInfo in class PackageManager

Parameters:

packageName - the name of the package to get information about.

Returns:

a Package object encapsulating the package meta data.

Throws:

Exception - if the package meta data can't be retrieved.

getRepositoryPackageVersions

public List<Object> getRepositoryPackageVersions(String packageName)
                                          throws Exception

Get a list of available versions of the named package.

Specified by:

getRepositoryPackageVersions in class PackageManager

Parameters:

packageName - the name of the package to get versions.

Returns:

a list of available versions (or null if not applicable)

Throws:

Exception - if something goes wrong while trying to retrieve the list of versions.

getRepositoryPackageInfo

public Package getRepositoryPackageInfo(String packageName,
                                        Object version)
                                 throws Exception

Get package information on the named package from the repository.

Specified by:

getRepositoryPackageInfo in class PackageManager

Parameters:

packageName - the name of the package to get information about.

version - the version of the package to retrieve (may be null if not applicable).

Returns:

a Package object encapsulating the package meta data.

Throws:

Exception - if the package meta data can't be retrieved.

getPackageArchiveInfo

public Package getPackageArchiveInfo(String packageArchivePath)
                              throws Exception

Get package information from the supplied package archive file.

Specified by:

getPackageArchiveInfo in class PackageManager

Parameters:

packageArchivePath - the path to the package archive file

Returns:

a Package object encapsulating the package meta data.

Throws:

Exception - if the package meta data can't be retrieved.

getInstalledPackageInfo

public Package getInstalledPackageInfo(String packageName)
                                throws Exception

Get package information on the named installed package.

Specified by:

getInstalledPackageInfo in class PackageManager

Parameters:

packageName - the name of the package to get information about.

Returns:

a Package object encapsulating the package meta data or null if the package is not installed.

Throws:

Exception - if the package meta data can't be retrieved.

deleteDir

public static void deleteDir(File dir,
                             PrintStream... progress)
                      throws Exception

Throws:

Exception

uninstallPackage

public void uninstallPackage(String packageName,
                             PrintStream... progress)
                      throws Exception

Uninstall a package.

Specified by:

uninstallPackage in class PackageManager

Parameters:

packageName - the package to uninstall.

progress - optional varargs parameter, that, if supplied, is expected to contain one or more PrintStream objects to write progress to.

Throws:

Exception - if the named package could not be removed for some reason.

installPackageFromArchive

public String installPackageFromArchive(String packageArchivePath,
                                        PrintStream... progress)
                                 throws Exception

Install a package from an archive on the local file system.

Specified by:

installPackageFromArchive in class PackageManager

Parameters:

packageArchivePath - the path to the package archive file.

progress - optional varargs parameter, that, if supplied, is expected to contain one or more PrintStream objects to write progress to.

Returns:

the name of the package installed

Throws:

Exception - if the package can't be installed for some reason.

installPackages

public void installPackages(List<Package> toInstall,
                            PrintStream... progress)
                     throws Exception

Installs all the packages in the supplied list.

Specified by:

installPackages in class PackageManager

Parameters:

toInstall - a list of Packages to install.

progress - optional varargs parameter, that, if supplied, is expected to contain one or more PrintStream objects to write progress to.

Throws:

Exception - if something goes wrong during the installation process.

getAllDependenciesForPackage

public List<Dependency> getAllDependenciesForPackage(Package target,
                                                     Map<String,List<Dependency>> conflicts)
                                              throws Exception

Gets a full list of packages (encapsulated in Dependency objects) that are required by directly and indirectly by the named target package. Also builds a Map of any packages that are required by more than one package and where there is a conflict of some sort (e.g. multiple conflicting versions). The keys of this map are package names (strings), and each associated value is a list of Dependency objects.

Specified by:

getAllDependenciesForPackage in class PackageManager

Parameters:

target - the package for which a list of dependencies is required.

conflicts - will hold any conflicts that are discovered while building the full dependency list.

Returns:

a list of packages that are directly and indirectly required by the named target package.

Throws:

Exception - if a problem occurs while building the dependency list.

installPackageFromRepository

public void installPackageFromRepository(String packageName,
                                         Object version,
                                         PrintStream... progress)
                                  throws Exception

Install a package sourced from the repository.

Specified by:

installPackageFromRepository in class PackageManager

Parameters:

packageName - the name of the package to install

version - the version of the package to install (may be null if not applicable).

progress - optional varargs parameter, that, if supplied, is expected to contain one or more PrintStream objects to write progress to.

Throws:

Exception - if the package can't be installed for some reason.

installPackageFromURL

public String installPackageFromURL(URL packageURL,
                                    PrintStream... progress)
                             throws Exception

Install a package sourced from a given URL.

Specified by:

installPackageFromURL in class PackageManager

Parameters:

packageURL - the URL to the package.

progress - optional varargs parameter, that, if supplied, is expected to contain one or more PrintStream objects to write progress to.

Returns:

the name of the package installed

Throws:

Exception - if the package can't be installed for some reason.

getRepositoryPackageMetaDataOnlyAsZip

public byte[] getRepositoryPackageMetaDataOnlyAsZip(PrintStream... progress)
                                             throws Exception

Gets an array of bytes containing a zip of all the repository meta data and supporting files. Does *not* contain any package archives etc., only a snapshot of the meta data. Could be used by clients to establish a cache of meta data.

Specified by:

getRepositoryPackageMetaDataOnlyAsZip in class PackageManager

Parameters:

progress - optional varargs parameter, that, if supplied, is expected to contain one or more PrintStream objects to write progress to.

Returns:

a zip compressed array of bytes.

Throws:

Exception - if the repository meta data can't be returned as a zip

getRepositoryPackageMetaDataOnlyAsZipLegacy

public byte[] getRepositoryPackageMetaDataOnlyAsZipLegacy(PrintStream... progress)
                                                   throws Exception

Gets an array of bytes containing a zip of all the repository meta data and supporting files using the legacy approach. Does *not* contain any package archives etc., only a snapshot of the meta data. Could be used by clients to establish a cache of meta data.

Returns:

a zip compressed array of bytes.

Throws:

Exception

getAllPackages

public List<Package> getAllPackages(PrintStream... progress)
                             throws Exception

Get all packages that the system knows about (i.e. all packages contained in the repository).

Specified by:

getAllPackages in class PackageManager

Parameters:

progress - optional varargs parameter, that, if supplied is expected to contain one or more PrintStream objects to write progress to.

Returns:

a list of all packages.

Throws:

Exception - if a list of packages can't be determined.

getAvailablePackages

public List<Package> getAvailablePackages()
                                   throws Exception

Get a list of packages that are not currently installed.

Specified by:

getAvailablePackages in class PackageManager

Returns:

a list of packages that are not currently installed.

Throws:

Exception - if a list of packages can't be determined.

getInstalledPackages

public List<Package> getInstalledPackages()
                                   throws Exception

Get a list of installed packages.

Specified by:

getInstalledPackages in class PackageManager

Returns:

a list of installed packages.

Throws:

Exception - if a list of packages can't be determined.

main

public static void main(String[] args)