Package org.eclipse.jetty.webapp

Class MetaInfConfiguration

java.lang.Object

org.eclipse.jetty.webapp.AbstractConfiguration

org.eclipse.jetty.webapp.MetaInfConfiguration

All Implemented Interfaces:

Configuration

Direct Known Subclasses:

AntMetaInfConfiguration, OSGiMetaInfConfiguration

public class MetaInfConfiguration
extends AbstractConfiguration

MetaInfConfiguration

Scan META-INF of jars to find:

• tlds
• web-fragment.xml
• resources

The jars which are scanned are:

1. those from the container classpath whose pattern matched the WebInfConfiguration.CONTAINER_JAR_PATTERN
2. those from WEB-INF/lib

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
class	MetaInfConfiguration.ContainerPathNameMatcher	ContainerPathNameMatcher Matches names of jars on the container classpath against a pattern.
class	MetaInfConfiguration.WebAppPathNameMatcher	WebAppPathNameMatcher Matches names of jars or dirs on the webapp classpath against a pattern.

Nested classes/interfaces inherited from interface org.eclipse.jetty.webapp.Configuration

Configuration.Wrapper, Configuration.WrapperFunction

Field Summary

Fields

Modifier and Type	Field	Description
static final List<String>	__allScanTypes
static final String	CACHED_CONTAINER_FRAGMENTS
static final String	CACHED_CONTAINER_RESOURCES
static final String	CACHED_CONTAINER_TLDS
static final String	CONTAINER_JAR_PATTERN
static final boolean	DEFAULT_USE_CONTAINER_METAINF_CACHE
static final String	METAINF_FRAGMENTS
static final String	METAINF_RESOURCES
static final String	METAINF_TLDS
static final String	RESOURCE_DIRS	If set, to a list of URLs, these resources are added to the context resource base as a resource collection.
static final String	USE_CONTAINER_METAINF_CACHE
static final String	WEBINF_JAR_PATTERN

Fields inherited from interface org.eclipse.jetty.webapp.Configuration

ATTR

Constructor Summary

Constructors

Constructor	Description
MetaInfConfiguration()

Method Summary

Modifier and Type	Method	Description
void	configure(WebAppContext context)	Configure WebApp.
void	findAndFilterContainerPaths(WebAppContext context)	Find jars and directories that are on the container's classpath and apply an optional filter.
void	findAndFilterWebAppPaths(WebAppContext context)	Finds the jars that are either physically or virtually in WEB-INF/lib, and applies an optional filter to their full pathnames.
protected List<Resource>	findClassDirs(WebAppContext context)
protected List<Resource>	findExtraClasspathDirs(WebAppContext context)	Get class dirs from WebAppContext.getExtraClasspath as resources
protected List<Resource>	findExtraClasspathJars(WebAppContext context)	Get jars from WebAppContext.getExtraClasspath as resources
protected List<Resource>	findJars(WebAppContext context)	Look for jars that should be treated as if they are in WEB-INF/lib
protected Resource	findWebInfClassesDir(WebAppContext context)	Get WEB-INF/classes dir
protected List<Resource>	findWebInfLibJars(WebAppContext context)	Look for jars in WEB-INF/lib
protected List<URI>	getAllContainerJars(WebAppContext context)
Collection<URL>	getTlds(File dir)	Find all .tld files in all subdirs of the given dir.
Collection<URL>	getTlds(URI uri)	Find all .tld files in the given jar.
void	postConfigure(WebAppContext context)	Clear down after configuration.
void	preConfigure(WebAppContext context)	Set up for configuration.
void	scanForFragment(WebAppContext context, Resource jar, ConcurrentHashMap<Resource,Resource> cache)	Scan for META-INF/web-fragment.xml file in the given jar.
void	scanForResources(WebAppContext context, Resource target, ConcurrentHashMap<Resource,Resource> cache)	Scan for META-INF/resources dir in the given jar.
void	scanForTlds(WebAppContext context, Resource jar, ConcurrentHashMap<Resource,Collection<URL>> cache)	Discover META-INF/*.tld files in the given jar
protected void	scanJars(WebAppContext context)
void	scanJars(WebAppContext context, Collection<Resource> jars, boolean useCaches)	For backwards compatibility.
void	scanJars(WebAppContext context, Collection<Resource> jars, boolean useCaches, List<String> scanTypes)	Look into the jars to discover info in META-INF.

Methods inherited from class org.eclipse.jetty.webapp.AbstractConfiguration

abort, addDependencies, addDependencies, addDependents, addDependents, cloneConfigure, deconfigure, destroy, expose, getDependencies, getDependents, getServerClasses, getSystemClasses, hide, isEnabledByDefault, protect, protectAndExpose

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.eclipse.jetty.webapp.Configuration

isAvailable, replaces

Field Details

USE_CONTAINER_METAINF_CACHE

public static final String USE_CONTAINER_METAINF_CACHE

See Also:

• Constant Field Values

DEFAULT_USE_CONTAINER_METAINF_CACHE

public static final boolean DEFAULT_USE_CONTAINER_METAINF_CACHE

See Also:

• Constant Field Values

CACHED_CONTAINER_TLDS

public static final String CACHED_CONTAINER_TLDS

See Also:

• Constant Field Values

CACHED_CONTAINER_FRAGMENTS

public static final String CACHED_CONTAINER_FRAGMENTS

See Also:

• Constant Field Values

CACHED_CONTAINER_RESOURCES

public static final String CACHED_CONTAINER_RESOURCES

See Also:

• Constant Field Values

METAINF_TLDS

public static final String METAINF_TLDS

See Also:

• Constant Field Values

METAINF_FRAGMENTS

public static final String METAINF_FRAGMENTS

See Also:

• Constant Field Values

METAINF_RESOURCES

public static final String METAINF_RESOURCES

See Also:

• Constant Field Values

CONTAINER_JAR_PATTERN

public static final String CONTAINER_JAR_PATTERN

See Also:

• Constant Field Values

WEBINF_JAR_PATTERN

public static final String WEBINF_JAR_PATTERN

See Also:

• Constant Field Values

__allScanTypes

public static final List<String> __allScanTypes

RESOURCE_DIRS

public static final String RESOURCE_DIRS

If set, to a list of URLs, these resources are added to the context resource base as a resource collection.

See Also:

• Constant Field Values

Constructor Details

MetaInfConfiguration

public MetaInfConfiguration()

Method Details

preConfigure

public void preConfigure(WebAppContext context)
                  throws Exception

Description copied from interface: Configuration

Set up for configuration.

Typically this step discovers configuration resources. Calls to preConfigure may alter the Configurations configured on the WebAppContext, so long as configurations prior to this configuration are not altered.

Specified by:

preConfigure in interface Configuration

Overrides:

preConfigure in class AbstractConfiguration

Parameters:

context - The context to configure

Throws:

Exception - if unable to pre configure

findAndFilterContainerPaths

public void findAndFilterContainerPaths(WebAppContext context)
                                 throws Exception

Find jars and directories that are on the container's classpath and apply an optional filter. The filter is a pattern applied to the full jar or directory names. If there is no pattern, then no jar or dir is considered to match. Those jars that do match will be later examined for META-INF information and annotations. To find them, examine the classloaders in the hierarchy above the webapp classloader that are URLClassLoaders. For jdk-9 we also look at the java.class.path, and the jdk.module.path.

Parameters:

context - the WebAppContext being deployed

Throws:

Exception

findAndFilterWebAppPaths

public void findAndFilterWebAppPaths(WebAppContext context)
                              throws Exception

Finds the jars that are either physically or virtually in WEB-INF/lib, and applies an optional filter to their full pathnames. The filter selects which jars will later be examined for META-INF information and annotations. If there is no pattern, then all jars are considered selected.

Parameters:

context - the WebAppContext being deployed

Throws:

Exception

getAllContainerJars

protected List<URI> getAllContainerJars(WebAppContext context)
                                 throws URISyntaxException

Throws:

URISyntaxException

configure

public void configure(WebAppContext context)
               throws Exception

Description copied from interface: Configuration

Configure WebApp.

Typically this step applies the discovered configuration resources to either the WebAppContext or the associated MetaData.

Specified by:

configure in interface Configuration

Overrides:

configure in class AbstractConfiguration

Parameters:

context - The context to configure

Throws:

Exception - if unable to configure

scanJars

protected void scanJars(WebAppContext context)
                 throws Exception

Throws:

Exception

scanJars

public void scanJars(WebAppContext context,
 Collection<Resource> jars,
 boolean useCaches)
              throws Exception

For backwards compatibility. This method will always scan for all types of data.

Parameters:

context - the context for the scan

jars - the jars to scan

useCaches - if true, the scanned info is cached

Throws:

Exception - if unable to scan the jars

scanJars

public void scanJars(WebAppContext context,
 Collection<Resource> jars,
 boolean useCaches,
 List<String> scanTypes)
              throws Exception

Look into the jars to discover info in META-INF. If useCaches == true, then we will cache the info discovered indexed by the jar in which it was discovered: this speeds up subsequent context deployments.

Parameters:

context - the context for the scan

jars - the jars resources to scan

useCaches - if true, cache the info discovered

scanTypes - the type of things to look for in the jars

Throws:

Exception - if unable to scan the jars

scanForResources

public void scanForResources(WebAppContext context,
 Resource target,
 ConcurrentHashMap<Resource,Resource> cache)
                      throws Exception

Scan for META-INF/resources dir in the given jar.

Parameters:

context - the context for the scan

target - the target resource to scan for

cache - the resource cache

Throws:

Exception - if unable to scan for resources

scanForFragment

public void scanForFragment(WebAppContext context,
 Resource jar,
 ConcurrentHashMap<Resource,Resource> cache)
                     throws Exception

Scan for META-INF/web-fragment.xml file in the given jar.

Parameters:

context - the context for the scan

jar - the jar resource to scan for fragements in

cache - the resource cache

Throws:

Exception - if unable to scan for fragments

scanForTlds

public void scanForTlds(WebAppContext context,
 Resource jar,
 ConcurrentHashMap<Resource,Collection<URL>> cache)
                 throws Exception

Discover META-INF/*.tld files in the given jar

Parameters:

context - the context for the scan

jar - the jar resources to scan tlds for

cache - the resource cache

Throws:

Exception - if unable to scan for tlds

postConfigure

public void postConfigure(WebAppContext context)
                   throws Exception

Description copied from interface: Configuration

Clear down after configuration.

Specified by:

postConfigure in interface Configuration

Overrides:

postConfigure in class AbstractConfiguration

Parameters:

context - The context to configure

Throws:

Exception - if unable to post configure

getTlds

public Collection<URL> getTlds(File dir)
                        throws IOException

Find all .tld files in all subdirs of the given dir.

Parameters:

dir - the directory to scan

Returns:

the list of tlds found

Throws:

IOException - if unable to scan the directory

getTlds

public Collection<URL> getTlds(URI uri)
                        throws IOException

Find all .tld files in the given jar.

Parameters:

uri - the uri to jar file

Returns:

the collection of tlds as url references

Throws:

IOException - if unable to scan the jar file

findClassDirs

protected List<Resource> findClassDirs(WebAppContext context)
                                throws Exception

Throws:

Exception

findJars

protected List<Resource> findJars(WebAppContext context)
                           throws Exception

Look for jars that should be treated as if they are in WEB-INF/lib

Parameters:

context - the context to find the jars in

Returns:

the list of jar resources found within context

Throws:

Exception - if unable to find the jars

findWebInfLibJars

protected List<Resource> findWebInfLibJars(WebAppContext context)
                                    throws Exception

Look for jars in WEB-INF/lib

Parameters:

context - the context to find the lib jars in

Returns:

the list of jars as Resource

Throws:

Exception - if unable to scan for lib jars

findExtraClasspathJars

protected List<Resource> findExtraClasspathJars(WebAppContext context)
                                         throws Exception

Get jars from WebAppContext.getExtraClasspath as resources

Parameters:

context - the context to find extra classpath jars in

Returns:

the list of Resources with the extra classpath, or null if not found

Throws:

Exception - if unable to resolve the extra classpath jars

findWebInfClassesDir

protected Resource findWebInfClassesDir(WebAppContext context)
                                 throws Exception

Get WEB-INF/classes dir

Parameters:

context - the context to look for the WEB-INF/classes directory

Returns:

the Resource for the WEB-INF/classes directory

Throws:

Exception - if unable to find the WEB-INF/classes directory

findExtraClasspathDirs

protected List<Resource> findExtraClasspathDirs(WebAppContext context)
                                         throws Exception

Get class dirs from WebAppContext.getExtraClasspath as resources

Parameters:

context - the context to look for extra classpaths in

Returns:

the list of Resources to the extra classpath

Throws:

Exception - if unable to resolve the extra classpath resources