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* Plugins:

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- Set classpath for specific client only, not for the whole JVM
      - Use ConfigDir() not AppDir()
This commit is contained in:
zzz
2010-05-05 19:34:03 +00:00
parent f3576e54c6
commit a8db6b007f
6 changed files with 133 additions and 27 deletions
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73
apps/routerconsole/java/src/net/i2p/router/web/PluginStarter.java
View File

@ -2,6 +2,7 @@ package net.i2p.router.web;
import java.io.File;
import java.io.IOException;
import java.lang.ClassLoader;
import java.lang.reflect.Method;
import java.net.URL;
import java.net.URLClassLoader;
@ -48,6 +49,7 @@ public class PluginStarter implements Runnable {
"midnight" };
private static Map<String, ThreadGroup> pluginThreadGroups = new ConcurrentHashMap<String, ThreadGroup>(); // one thread group per plugin (map key=plugin name)
private static Map<String, Collection<Job>> pluginJobs = new ConcurrentHashMap<String, Collection<Job>>();
private static Map<String, ClassLoader> _clCache = new ConcurrentHashMap();
public PluginStarter(RouterContext ctx) {
_context = ctx;
@ -87,7 +89,7 @@ public class PluginStarter implements Runnable {
*/
static boolean startPlugin(RouterContext ctx, String appName) throws Exception {
Log log = ctx.logManager().getLog(PluginStarter.class);
File pluginDir = new File(ctx.getAppDir(), PluginUpdateHandler.PLUGIN_DIR + '/' + appName);
File pluginDir = new File(ctx.getConfigDir(), PluginUpdateHandler.PLUGIN_DIR + '/' + appName);
if ((!pluginDir.exists()) || (!pluginDir.isDirectory())) {
log.error("Cannot start nonexistent plugin: " + appName);
return false;
@ -195,7 +197,7 @@ public class PluginStarter implements Runnable {
*/
static boolean stopPlugin(RouterContext ctx, String appName) throws Exception {
Log log = ctx.logManager().getLog(PluginStarter.class);
File pluginDir = new File(ctx.getAppDir(), PluginUpdateHandler.PLUGIN_DIR + '/' + appName);
File pluginDir = new File(ctx.getConfigDir(), PluginUpdateHandler.PLUGIN_DIR + '/' + appName);
if ((!pluginDir.exists()) || (!pluginDir.isDirectory())) {
log.error("Cannot stop nonexistent plugin: " + appName);
return false;
@ -244,7 +246,7 @@ public class PluginStarter implements Runnable {
/** @return true on success - caller should call stopPlugin() first */
static boolean deletePlugin(RouterContext ctx, String appName) throws Exception {
Log log = ctx.logManager().getLog(PluginStarter.class);
File pluginDir = new File(ctx.getAppDir(), PluginUpdateHandler.PLUGIN_DIR + '/' + appName);
File pluginDir = new File(ctx.getConfigDir(), PluginUpdateHandler.PLUGIN_DIR + '/' + appName);
if ((!pluginDir.exists()) || (!pluginDir.isDirectory())) {
log.error("Cannot delete nonexistent plugin: " + appName);
return false;
@ -287,7 +289,7 @@ public class PluginStarter implements Runnable {
/** plugin.config */
public static Properties pluginProperties(I2PAppContext ctx, String appName) {
File cfgFile = new File(ctx.getAppDir(), PluginUpdateHandler.PLUGIN_DIR + '/' + appName + '/' + "plugin.config");
File cfgFile = new File(ctx.getConfigDir(), PluginUpdateHandler.PLUGIN_DIR + '/' + appName + '/' + "plugin.config");
Properties rv = new Properties();
try {
DataHelper.loadProps(rv, cfgFile);
@ -322,7 +324,7 @@ public class PluginStarter implements Runnable {
*/
public static List<String> getPlugins() {
List<String> rv = new ArrayList();
File pluginDir = new File(I2PAppContext.getGlobalContext().getAppDir(), PluginUpdateHandler.PLUGIN_DIR);
File pluginDir = new File(I2PAppContext.getGlobalContext().getConfigDir(), PluginUpdateHandler.PLUGIN_DIR);
File[] files = pluginDir.listFiles();
if (files == null)
return rv;
@ -405,6 +407,8 @@ public class PluginStarter implements Runnable {
argVal[i] = argVal[i].replace("$PLUGIN", pluginDir.getAbsolutePath());
}
}
ClassLoader cl = null;
if (app.classpath != null) {
String cp = new String(app.classpath);
if (cp.indexOf("$") >= 0) {
@ -412,22 +416,41 @@ public class PluginStarter implements Runnable {
cp = cp.replace("$CONFIG", ctx.getConfigDir().getAbsolutePath());
cp = cp.replace("$PLUGIN", pluginDir.getAbsolutePath());
}
addToClasspath(cp, app.clientName, log);
// Old way - add for the whole JVM
//addToClasspath(cp, app.clientName, log);
// New way - add only for this client
// We cache the ClassLoader we start the client with, so
// we can reuse it for stopping and uninstalling.
// If we don't, the client won't be able to find its
// static members.
String clCacheKey = pluginName + app.className + app.args;
if (!action.equals("start"))
cl = _clCache.get(clCacheKey);
if (cl == null) {
URL[] urls = classpathToURLArray(cp, app.clientName, log);
if (urls != null) {
cl = new URLClassLoader(urls, ClassLoader.getSystemClassLoader());
if (action.equals("start"))
_clCache.put(clCacheKey, cl);
}
}
}
if (app.delay < 0 && action.equals("start")) {
// this will throw exceptions
LoadClientAppsJob.runClientInline(app.className, app.clientName, argVal, log);
LoadClientAppsJob.runClientInline(app.className, app.clientName, argVal, log, cl);
} else if (app.delay == 0 || !action.equals("start")) {
// quick check, will throw ClassNotFoundException on error
LoadClientAppsJob.testClient(app.className);
LoadClientAppsJob.testClient(app.className, cl);
// run this guy now
LoadClientAppsJob.runClient(app.className, app.clientName, argVal, log, pluginThreadGroup);
LoadClientAppsJob.runClient(app.className, app.clientName, argVal, log, pluginThreadGroup, cl);
} else {
// quick check, will throw ClassNotFoundException on error
LoadClientAppsJob.testClient(app.className);
LoadClientAppsJob.testClient(app.className, cl);
// wait before firing it up
Job job = new LoadClientAppsJob.DelayedRunClient(ctx, app.className, app.clientName, argVal, app.delay, pluginThreadGroup);
Job job = new LoadClientAppsJob.DelayedRunClient(ctx, app.className, app.clientName, argVal, app.delay, pluginThreadGroup, cl);
ctx.jobQueue().addJob(job);
pluginJobs.get(pluginName).add(job);
}
@ -470,6 +493,7 @@ public class PluginStarter implements Runnable {
* but I don't see how to make it magically get used for everything.
* So add this to the whole JVM's classpath.
*/
/******
private static void addToClasspath(String classpath, String clientName, Log log) {
StringTokenizer tok = new StringTokenizer(classpath, ",");
while (tok.hasMoreTokens()) {
@ -488,6 +512,33 @@ public class PluginStarter implements Runnable {
}
}
}
*****/
/**
* @return null if no valid elements
*/
private static URL[] classpathToURLArray(String classpath, String clientName, Log log) {
StringTokenizer tok = new StringTokenizer(classpath, ",");
List<URL> urls = new ArrayList();
while (tok.hasMoreTokens()) {
String elem = tok.nextToken().trim();
File f = new File(elem);
if (!f.isAbsolute()) {
log.error("Plugin client " + clientName + " classpath element is not absolute: " + f);
continue;
}
try {
urls.add(f.toURI().toURL());
if (log.shouldLog(Log.WARN))
log.warn("INFO: Adding plugin to classpath: " + f);
} catch (Exception e) {
log.error("Plugin client " + clientName + " bad classpath element: " + f, e);
}
}
if (urls.isEmpty())
return null;
return urls.toArray(new URL[urls.size()]);
}
/**
* http://jimlife.wordpress.com/2007/12/19/java-adding-new-classpath-at-runtime/

2
apps/routerconsole/java/src/net/i2p/router/web/PluginUpdateHandler.java
View File

@ -150,7 +150,7 @@ public class PluginUpdateHandler extends UpdateHandler {
public void transferComplete(long alreadyTransferred, long bytesTransferred, long bytesRemaining, String url, String outputFile, boolean notModified) {
updateStatus("<b>" + _("Plugin downloaded") + "</b>");
File f = new File(_updateFile);
File appDir = new File(_context.getAppDir(), PLUGIN_DIR);
File appDir = new File(_context.getConfigDir(), PLUGIN_DIR);
if ((!appDir.exists()) && (!appDir.mkdir())) {
f.delete();
statusDone("<b>" + _("Cannot create plugin directory {0}", appDir.getAbsolutePath()) + "</b>");

2
apps/routerconsole/java/src/net/i2p/router/web/WebAppConfiguration.java
View File

@ -54,7 +54,7 @@ public class WebAppConfiguration implements WebApplicationContext.Configuration
I2PAppContext i2pContext = I2PAppContext.getGlobalContext();
File libDir = new File(i2pContext.getBaseDir(), "lib");
// FIXME this only works if war is the same name as the plugin
File pluginDir = new File(i2pContext.getAppDir(),
File pluginDir = new File(i2pContext.getConfigDir(),
PluginUpdateHandler.PLUGIN_DIR + ctxPath);
File dir = libDir;