/**
* Scan the provided ServletContext and classloader for JAR files. Each JAR file found will be
* passed to the callback handler to be processed.
*
* @param context The ServletContext - used to locate and access WEB-INF/lib
* @param classloader The classloader - used to access JARs not in WEB-INF/lib
* @param callback The handler to process any JARs found
* @param jarsToSkip List of JARs to ignore. If this list is null, a default list will be read
* from the system property defined by {@link Constants#SKIP_JARS_PROPERTY}
*/
@Override
public void scan(
ServletContext context,
ClassLoader classloader,
JarScannerCallback callback,
Set<String> jarsToSkip) {
if (log.isTraceEnabled()) {
log.trace(sm.getString("jarScan.webinflibStart"));
}
final Set<String> ignoredJars;
if (jarsToSkip == null) {
ignoredJars = defaultJarsToSkip;
} else {
ignoredJars = jarsToSkip;
}
// Scan WEB-INF/lib
Set<String> dirList = context.getResourcePaths(Constants.WEB_INF_LIB);
if (dirList != null) {
Iterator<String> it = dirList.iterator();
while (it.hasNext()) {
String path = it.next();
if (path.endsWith(Constants.JAR_EXT)
&& !Matcher.matchName(ignoredJars, path.substring(path.lastIndexOf('/') + 1))) {
// Need to scan this JAR
if (log.isDebugEnabled()) {
log.debug(sm.getString("jarScan.webinflibJarScan", path));
}
URL url = null;
try {
// File URLs are always faster to work with so use them
// if available.
String realPath = context.getRealPath(path);
if (realPath == null) {
url = context.getResource(path);
} else {
url = (new File(realPath)).toURI().toURL();
}
process(callback, url);
} catch (IOException e) {
log.warn(sm.getString("jarScan.webinflibFail", url), e);
}
} else {
if (log.isTraceEnabled()) {
log.trace(sm.getString("jarScan.webinflibJarNoScan", path));
}
}
}
}
// Scan the classpath
if (scanClassPath && classloader != null) {
if (log.isTraceEnabled()) {
log.trace(sm.getString("jarScan.classloaderStart"));
}
ClassLoader loader = classloader;
ClassLoader stopLoader = null;
if (!scanBootstrapClassPath) {
// Stop when we reach the bootstrap class loader
stopLoader = ClassLoader.getSystemClassLoader().getParent();
}
while (loader != null && loader != stopLoader) {
if (loader instanceof URLClassLoader) {
URL[] urls = ((URLClassLoader) loader).getURLs();
for (int i = 0; i < urls.length; i++) {
// Extract the jarName if there is one to be found
String jarName = getJarName(urls[i]);
// Skip JARs known not to be interesting and JARs
// in WEB-INF/lib we have already scanned
if (jarName != null
&& !(Matcher.matchName(ignoredJars, jarName)
|| urls[i].toString().contains(Constants.WEB_INF_LIB + jarName))) {
if (log.isDebugEnabled()) {
log.debug(sm.getString("jarScan.classloaderJarScan", urls[i]));
}
try {
process(callback, urls[i]);
} catch (IOException ioe) {
log.warn(sm.getString("jarScan.classloaderFail", urls[i]), ioe);
}
} else {
if (log.isTraceEnabled()) {
log.trace(sm.getString("jarScan.classloaderJarNoScan", urls[i]));
}
}
}
}
loader = loader.getParent();
}
}
}
/**
* Scan the provided ServletContext and classloader for JAR files. Each JAR file found will be
* passed to the callback handler to be processed.
*
* @param context The ServletContext - used to locate and access WEB-INF/lib
* @param classloader The classloader - used to access JARs not in WEB-INF/lib
* @param callback The handler to process any JARs found
* @param jarsToSkip List of JARs to ignore. If this list is null, a default list will be read
* from the system property defined by {@link Constants#SKIP_JARS_PROPERTY}
*/
@Override
public void scan(
ServletContext context,
ClassLoader classloader,
JarScannerCallback callback,
Set<String> jarsToSkip) {
if (log.isTraceEnabled()) {
log.trace(sm.getString("jarScan.webinflibStart"));
}
Set<String> ignoredJars;
if (jarsToSkip == null) {
ignoredJars = defaultJarsToSkip;
} else {
ignoredJars = jarsToSkip;
}
Set<String[]> ignoredJarsTokens = new HashSet<String[]>();
for (String pattern : ignoredJars) {
ignoredJarsTokens.add(Matcher.tokenizePathAsArray(pattern));
}
// Scan WEB-INF/lib
Set<String> dirList = context.getResourcePaths(Constants.WEB_INF_LIB);
if (dirList != null) {
Iterator<String> it = dirList.iterator();
while (it.hasNext()) {
String path = it.next();
if (path.endsWith(Constants.JAR_EXT)
&& !Matcher.matchPath(ignoredJarsTokens, path.substring(path.lastIndexOf('/') + 1))) {
// Need to scan this JAR
if (log.isDebugEnabled()) {
log.debug(sm.getString("jarScan.webinflibJarScan", path));
}
URL url = null;
try {
url = context.getResource(path);
process(callback, url);
} catch (IOException e) {
log.warn(sm.getString("jarScan.webinflibFail", url), e);
}
} else {
if (log.isTraceEnabled()) {
log.trace(sm.getString("jarScan.webinflibJarNoScan", path));
}
}
}
}
// Scan the classpath
if (scanClassPath) {
if (log.isTraceEnabled()) {
log.trace(sm.getString("jarScan.classloaderStart"));
}
ClassLoader loader = Thread.currentThread().getContextClassLoader();
while (loader != null) {
if (loader instanceof URLClassLoader) {
URL[] urls = ((URLClassLoader) loader).getURLs();
for (int i = 0; i < urls.length; i++) {
// Extract the jarName if there is one to be found
String jarName = getJarName(urls[i]);
// Skip JARs known not to be interesting and JARs
// in WEB-INF/lib we have already scanned
if (jarName != null
&& !(Matcher.matchPath(ignoredJarsTokens, jarName)
|| urls[i].toString().contains(Constants.WEB_INF_LIB + jarName))) {
if (log.isDebugEnabled()) {
log.debug(sm.getString("jarScan.classloaderJarScan", urls[i]));
}
try {
process(callback, urls[i]);
} catch (IOException ioe) {
log.warn(sm.getString("jarScan.classloaderFail", urls[i]), ioe);
}
} else {
if (log.isTraceEnabled()) {
log.trace(sm.getString("jarScan.classloaderJarNoScan", urls[i]));
}
}
}
}
loader = loader.getParent();
}
}
}