private static String getClassName(TenantWrapper tenant, ScriptCachingContext sctx)
throws ScriptException {
String filteredPath = getPackage(sctx.getContext(), sctx.getPath());
PackageWrapper packageWrapper = tenant.getPath(sctx);
long classIndex = packageWrapper.getClassIndex();
packageWrapper.setClassIndex(classIndex + 1);
return PACKAGE_NAME + filteredPath + ".c" + classIndex;
}
private CachingContext getCachingContext(ScriptCachingContext sctx) {
TenantWrapper tenant = tenants.get(sctx.getTenantId());
if (tenant == null) {
return null;
}
return tenant.getCachingContext(sctx);
}
private TenantWrapper initContexts(ScriptCachingContext sctx) {
TenantWrapper tenant = tenants.get(sctx.getTenantId());
if (tenant == null) {
tenant = new TenantWrapper();
tenants.put(sctx.getTenantId(), tenant);
}
ContextWrapper context = tenant.getContext(sctx);
if (context == null) {
context = new ContextWrapper(sctx.getContext());
tenant.setContext(sctx, context);
}
PackageWrapper packageWrapper = context.getPackage(sctx.getPath());
if (packageWrapper == null) {
packageWrapper = new PackageWrapper();
context.setPackage(sctx.getPath(), packageWrapper);
}
return tenant;
}
public Script getScriptObject(Reader scriptReader, ScriptCachingContext sctx)
throws ScriptException {
CachingContext ctx = getCachingContext(sctx);
if (ctx == null) {
return null;
}
// source file has been modified, so we recreate
if (sctx.getSourceModifiedTime() > ctx.getSourceModifiedTime()) {
cacheScript(scriptReader, sctx);
ctx = getCachingContext(sctx);
}
return ctx.getScript();
}
private Script getScriptObject(Object[] compiled, ScriptCachingContext sctx)
throws ScriptException {
String className = (String) compiled[0];
byte[] classBytes = (byte[]) compiled[1];
ClassLoader rhinoLoader = getClass().getClassLoader();
GeneratedClassLoader loader;
try {
loader = SecurityController.createLoader(rhinoLoader, sctx.getSecurityDomain());
Class cl = loader.defineClass(className, classBytes);
loader.linkClass(cl);
return (Script) cl.newInstance();
} catch (SecurityException e) {
throw new ScriptException(e);
} catch (IllegalArgumentException e) {
throw new ScriptException(e);
} catch (InstantiationException e) {
throw new ScriptException(e);
} catch (IllegalAccessException e) {
throw new ScriptException(e);
}
}
public synchronized void cacheScript(Reader scriptReader, ScriptCachingContext sctx)
throws ScriptException {
if (scriptReader == null) {
String msg = "Unable to find the Reader for script source in CachingContext";
log.error(msg);
throw new ScriptException(msg);
}
String className;
TenantWrapper tenant = initContexts(sctx);
CachingContext ctx = getCachingContext(sctx);
if (ctx != null) {
if (sctx.getSourceModifiedTime() <= ctx.getSourceModifiedTime()) {
return;
}
className = ctx.getClassName();
invalidateCache(sctx);
ctx.setSourceModifiedTime(0L);
ctx.setCacheUpdatedTime(0L);
} else {
className = getClassName(tenant, sctx);
ctx = new CachingContext(sctx.getContext(), sctx.getPath(), sctx.getCacheKey());
ctx.setTenantId(sctx.getTenantId());
ctx.setContext(sctx.getContext());
ctx.setPath(sctx.getPath());
ctx.setCacheKey(sctx.getCacheKey());
ctx.setClassName(className);
}
try {
String scriptPath = sctx.getContext() + sctx.getPath() + sctx.getCacheKey();
Object[] compiled =
compiler.compileToClassFiles(
HostObjectUtil.readerToString(scriptReader), scriptPath, 1, className);
ctx.setScript(getScriptObject(compiled, sctx));
ctx.setCacheUpdatedTime(System.currentTimeMillis());
ctx.setSourceModifiedTime(sctx.getSourceModifiedTime());
tenant.setCachingContext(ctx);
} catch (Exception e) {
throw new ScriptException(e);
}
}
public boolean isOlder(ScriptCachingContext sctx) {
CachingContext ctx = getCachingContext(sctx);
return ctx == null || sctx.getSourceModifiedTime() > ctx.getSourceModifiedTime();
}