private boolean loadIncludedModules(
File currentModuleDir, ModuleReference mr, String includesString) {
checkWorkerContext();
for (String moduleName : parseIncludeString(includesString)) {
ModuleIdentifier modID = new ModuleIdentifier(moduleName);
ModuleReference includedMr = moduleRefs.get(moduleName);
if (includedMr == null) {
File modDir = locateModule(currentModuleDir, modID);
if (modDir == null) {
if (!doInstallMod(modID)) {
return false;
}
}
modDir = locateModule(currentModuleDir, modID);
List<URL> urls = getModuleClasspath(modDir);
JsonObject conf = loadModuleConfig(modID, modDir);
ModuleFields fields = new ModuleFields(conf);
boolean res = fields.isResident();
includedMr =
new ModuleReference(
this,
moduleName,
new ModuleClassLoader(platformClassLoader, urls.toArray(new URL[urls.size()])),
res);
ModuleReference prev = moduleRefs.putIfAbsent(moduleName, includedMr);
if (prev != null) {
includedMr = prev;
}
String includes = fields.getIncludes();
if (includes != null) {
loadIncludedModules(modDir, includedMr, includes);
}
}
includedMr.incRef();
mr.mcl.addParent(includedMr);
}
return true;
}
/**
* Computes a hash code for this resolved module.
*
* <p>The hash code is based upon the components of the resolved module and satisfies the general
* contract of the {@link Object#hashCode Object.hashCode} method.
*
* @return The hash-code value for this resolved module
*/
@Override
public int hashCode() {
return cf.hashCode() ^ mref.hashCode();
}
private void clearParents() {
for (ModuleReference parent : parents) {
parent.decRef();
}
parents.clear();
}
private void doDeployMod(
final boolean redeploy,
final String depName,
final ModuleIdentifier modID,
final JsonObject config,
final int instances,
final File currentModDir,
final Handler<String> doneHandler) {
checkWorkerContext();
File modDir = locateModule(currentModDir, modID);
if (modDir != null) {
JsonObject conf = loadModuleConfig(modID, modDir);
ModuleFields fields = new ModuleFields(conf);
String main = fields.getMain();
if (main == null) {
log.error("Runnable module " + modID + " mod.json must contain a \"main\" field");
callDoneHandler(doneHandler, null);
return;
}
boolean worker = fields.isWorker();
boolean multiThreaded = fields.isMultiThreaded();
if (multiThreaded && !worker) {
throw new IllegalArgumentException("Multi-threaded modules must be workers");
}
boolean preserveCwd = fields.isPreserveCurrentWorkingDirectory();
// If preserveCwd then use the current module directory instead, or the cwd if not in a module
File modDirToUse = preserveCwd ? currentModDir : modDir;
List<URL> urls = getModuleClasspath(modDir);
if (urls == null) {
callDoneHandler(doneHandler, null);
return;
}
ModuleReference mr = moduleRefs.get(modID.toString());
if (mr == null) {
boolean res = fields.isResident();
mr =
new ModuleReference(
this,
modID.toString(),
new ModuleClassLoader(platformClassLoader, urls.toArray(new URL[urls.size()])),
res);
ModuleReference prev = moduleRefs.putIfAbsent(modID.toString(), mr);
if (prev != null) {
mr = prev;
}
}
ModuleIdentifier enclosingModID = getEnclosingModID();
if (enclosingModID != null) {
// If enclosed in another module then the enclosing module classloader becomes a parent of
// this one
ModuleReference parentRef = moduleRefs.get(enclosingModID.toString());
mr.mcl.addParent(parentRef);
parentRef.incRef();
}
// Now load any included moduleRefs
String includes = fields.getIncludes();
if (includes != null) {
if (!loadIncludedModules(modDir, mr, includes)) {
callDoneHandler(doneHandler, null);
return;
}
}
final boolean autoRedeploy = fields.isAutoRedeploy();
doDeploy(
depName,
autoRedeploy,
worker,
multiThreaded,
main,
modID,
config,
urls.toArray(new URL[urls.size()]),
instances,
modDirToUse,
mr,
new Handler<String>() {
@Override
public void handle(String deploymentID) {
if (deploymentID != null && !redeploy && autoRedeploy) {
redeployer.moduleDeployed(deployments.get(deploymentID));
}
callDoneHandler(doneHandler, deploymentID);
}
});
} else {
if (doInstallMod(modID)) {
doDeployMod(redeploy, depName, modID, config, instances, currentModDir, doneHandler);
} else {
callDoneHandler(doneHandler, null);
}
}
}
private void doDeploy(
final String depName,
boolean autoRedeploy,
boolean worker,
boolean multiThreaded,
String theMain,
final ModuleIdentifier modID,
final JsonObject config,
final URL[] urls,
int instances,
final File modDir,
final ModuleReference mr,
final Handler<String> doneHandler) {
checkWorkerContext();
final String deploymentName = depName != null ? depName : genDepName();
log.debug(
"Deploying name : " + deploymentName + " main: " + theMain + " instances: " + instances);
// How we determine which language implementation to use:
// 1. Look for a prefix on the main, e.g. 'groovy:org.foo.myproject.MyGroovyMain' would force
// the groovy
// language impl to be used
// 2. If there is no prefix, then look at the extension, if any. If there is an extension
// mapping for that
// extension, use that.
// 3. No prefix and no extension mapping - use the default runtime
LanguageImplInfo langImplInfo = null;
final String main;
// Look for a prefix
int prefixMarker = theMain.indexOf(COLON);
if (prefixMarker != -1) {
String prefix = theMain.substring(0, prefixMarker);
langImplInfo = languageImpls.get(prefix);
if (langImplInfo == null) {
throw new IllegalStateException("No language implementation known for prefix " + prefix);
}
main = theMain.substring(prefixMarker + 1);
} else {
main = theMain;
}
if (langImplInfo == null) {
// No prefix - now look at the extension
int extensionMarker = main.lastIndexOf('.');
if (extensionMarker != -1) {
String extension = main.substring(extensionMarker + 1);
String langImplName = extensionMappings.get(extension);
if (langImplName != null) {
langImplInfo = languageImpls.get(langImplName);
if (langImplInfo == null) {
throw new IllegalStateException(
"Extension mapping for "
+ extension
+ " specified as "
+ langImplName
+ ", but no language implementation known for that name");
}
}
}
}
if (langImplInfo == null) {
// Use the default
langImplInfo = languageImpls.get(defaultLanguageImplName);
if (langImplInfo == null) {
throw new IllegalStateException(
"Default language implementation is "
+ defaultLanguageImplName
+ " but no language implementation known for that name");
}
}
// Include the language impl module as a parent of the classloader
if (langImplInfo.moduleName != null) {
if (!loadIncludedModules(modDir, mr, langImplInfo.moduleName)) {
log.error("Failed to load module: " + langImplInfo.moduleName);
doneHandler.handle(null);
return;
}
}
final VerticleFactory verticleFactory;
final Container container = new DefaultContainer(this);
try {
// TODO not one verticle factory per module ref, but one per language per module ref
verticleFactory = mr.getVerticleFactory(langImplInfo.factoryName, vertx, container);
} catch (Exception e) {
log.error("Failed to instantiate verticle factory", e);
doneHandler.handle(null);
return;
}
final int instCount = instances;
class AggHandler {
AtomicInteger count = new AtomicInteger(0);
boolean failed;
void done(boolean res) {
if (!res) {
failed = true;
}
if (count.incrementAndGet() == instCount) {
String deploymentID = failed ? null : deploymentName;
callDoneHandler(doneHandler, deploymentID);
}
}
}
final AggHandler aggHandler = new AggHandler();
String parentDeploymentName = getDeploymentName();
final Deployment deployment =
new Deployment(
deploymentName,
main,
modID,
instances,
config == null ? new JsonObject() : config.copy(),
urls,
modDir,
parentDeploymentName,
mr,
autoRedeploy);
mr.incRef();
deployments.put(deploymentName, deployment);
if (parentDeploymentName != null) {
Deployment parentDeployment = deployments.get(parentDeploymentName);
parentDeployment.childDeployments.add(deploymentName);
}
ClassLoader oldTCCL = Thread.currentThread().getContextClassLoader();
Thread.currentThread().setContextClassLoader(mr.mcl);
try {
for (int i = 0; i < instances; i++) {
// Launch the verticle instance
Runnable runner =
new Runnable() {
public void run() {
Verticle verticle = null;
boolean error = true;
try {
verticle = verticleFactory.createVerticle(main);
error = false;
} catch (ClassNotFoundException e) {
log.error(
"Cannot find verticle "
+ main
+ " in "
+ verticleFactory.getClass().getName(),
e);
} catch (Throwable t) {
log.error(
"Failed to create verticle "
+ main
+ " in "
+ verticleFactory.getClass().getName(),
t);
}
if (error) {
doUndeploy(
deploymentName,
new SimpleHandler() {
public void handle() {
aggHandler.done(false);
}
});
return;
}
verticle.setContainer(container);
verticle.setVertx(vertx);
try {
addVerticle(deployment, verticle, verticleFactory);
if (modDir != null) {
setPathAdjustment(modDir);
}
VoidResult vr = new VoidResult();
verticle.start(vr);
vr.setHandler(
new AsyncResultHandler<Void>() {
@Override
public void handle(AsyncResult<Void> ar) {
if (ar.succeeded()) {
aggHandler.done(true);
} else {
log.error(
"Failed to deploy verticle "
+ main
+ " in "
+ verticleFactory.getClass().getName(),
ar.exception);
aggHandler.done(false);
}
}
});
} catch (Throwable t) {
t.printStackTrace();
vertx.reportException(t);
doUndeploy(
deploymentName,
new SimpleHandler() {
public void handle() {
aggHandler.done(false);
}
});
}
}
};
if (worker) {
vertx.startInBackground(runner, multiThreaded);
} else {
vertx.startOnEventLoop(runner);
}
}
} finally {
Thread.currentThread().setContextClassLoader(oldTCCL);
}
}
