When running my embedded jetty web app launcher, I see the following output to stderr. I just started seeing this after moving my build to maven-2. Has anyone seen this before?
IDLE SCEP#988057 [d=false,io=1,w=true,rb=false,wb=false],NOT_HANDSHAKING, in/out=0/0 Status = OK HandshakeStatus = NOT_HANDSHAKING
bytesConsumed = 5469 bytesProduced = 5509
It repeats occasionally seemingly at random times.
This seems to be coming from jetty NIO support -- it appears that jetty feels it is appropriate to log to stderr when it close idle connections.
at org.eclipse.jetty.io.nio.SelectChannelEndPoint.checkIdleTimestamp(SelectChannelEndPoint.java:231)
at org.eclipse.jetty.io.nio.SelectorManager$SelectSet$2.run(SelectorManager.java:768)
at org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:436)
For those with similar problems, I overrode System.err with a mock output stream:
public class DebugOutputStream extends OutputStream {
private Logger s_logger = LoggerFactory.getLogger(DebugOutputStream.class);
private final OutputStream m_realStream;
private ByteArrayOutputStream baos = new ByteArrayOutputStream();
private Pattern m_searchFor;
public DebugOutputStream(OutputStream realStream, String regex) {
m_realStream = realStream;
m_searchFor = Pattern.compile(regex);
}
public void write(int b) throws IOException {
baos.write(b);
if (m_searchFor.matcher(baos.toString()).matches()) {
s_logger.info("unwanted output detected", new RuntimeException());
}
if (b == '\n') baos.reset();
m_realStream.write(b);
}
}
Related
I am working on a Quarkus application to acct as an Operator in a OpenShift/Kubernetes cluster. When writing the tests using a kubernetesMockServer it is working fine for REST calls to developed application but when code runs inside an Initialization Block it is failing, in the log I see that mock server is replying with a 404 error:
2020-02-17 11:04:12,148 INFO [okh.moc.MockWebServer] (MockWebServer /127.0.0.1:53048) MockWebServer[57577] received request: GET /apis/apiextensions.k8s.io/v1beta1/customresourcedefinitions HTTP/1.1 and responded: HTTP/1.1 404 Client Error
On the TestCode I have:
#QuarkusTestResource(KubernetesMockServerTestResource.class)
#QuarkusTest
class TestAIRController {
#MockServer
KubernetesMockServer mockServer;
private CustomResourceDefinition crd;
private CustomResourceDefinitionList crdlist;
#BeforeEach
public void before() {
crd = new CustomResourceDefinitionBuilder()
.withApiVersion("apiextensions.k8s.io/v1beta1")
.withNewMetadata().withName("types.openshift.example-cloud.com")
.endMetadata()
.withNewSpec()
.withNewNames()
.withKind("Type")
.withPlural("types")
.endNames()
.withGroup("openshift.example-cloud.com")
.withVersion("v1")
.withScope("Namespaced")
.endSpec()
.build();
crdlist = new CustomResourceDefinitionListBuilder().withItems(crd).build();
mockServer.expect().get().withPath("/apis/apiextensions.k8s.io/v1beta1/customresourcedefinitions")
.andReturn(200, crdlist)
.always();
}
#Test
void test() {
RestAssured.when().get("/dummy").then().body("size()", Is.is(0));
}
}
The dummy rest is using the same code for searching the CRD, and in fact when running withouth the class observing the startup event it works fine
#Path("/dummy")
public class Dummy {
private static final Logger LOGGER =LoggerFactory.getLogger(Dummy.class);
#GET
#Produces(MediaType.APPLICATION_JSON)
public Response listCRDs(){
KubernetesClient oc = new DefaultKubernetesClient();
CustomResourceDefinition crd = oc.customResourceDefinitions()
.list().getItems().stream()
.filter( ob -> ob.getMetadata().getName().equals("types.openshift.example-cloud.com"))
.findFirst().get();
LOGGER.info("CRD NAME is {}", crd.getMetadata().getName());
return Response.ok(new ArrayList<String>()).build();
}
}
Finally this is an except of the
#ApplicationScoped
public class AIRWatcher {
private static final Logger LOGGER = LoggerFactory.getLogger(AIRWatcher.class);
void OnStart(#Observes StartupEvent ev) {
KubernetesClient oc = new DefaultKubernetesClient();
CustomResourceDefinition crd = oc.customResourceDefinitions()
.list().getItems().stream()
.filter( ob -> ob.getMetadata().getName().equals("types.openshift.example-cloud.com"))
.findFirst().get();
LOGGER.info("Using {}", crd.getMetadata().getName());
}
}
It's like for some reason the mock server is still not initialized for the Startup event, is there any way to solve it?
The problem is that the Mock Server is only configured to respond right before the test execution, while this code:
void OnStart(#Observes StartupEvent ev) {
KubernetesClient oc = new DefaultKubernetesClient();
CustomResourceDefinition crd = oc.customResourceDefinitions()
.list().getItems().stream()
.filter( ob -> ob.getMetadata().getName().equals("types.openshift.example-cloud.com"))
.findFirst().get();
LOGGER.info("Using {}", crd.getMetadata().getName());
}
runs when the application is actually comes up (which is before any #BeforeEach runs).
Can you please open an issue on the Quarkus Github? This should be something we provide a solution for
I am trying to implement the following use case as part of my akka learning
I would like to calculate the total streets in all cities of all states. I have a database that contain the details needed. Here is what i have so far
Configuration
akka.actor.deployment {
/CityActor{
router = random-pool
nr-of-instances = 10
}
/StateActor {
router = random-pool
nr-of-instances = 1
}}
Main
public static void main(String[] args) {
try {
Config conf = ConfigFactory
.parseReader(
new FileReader(ClassLoader.getSystemResource("config/forum.conf").getFile()))
.withFallback(ConfigFactory.load());
System.out.println(conf);
final ActorSystem system = ActorSystem.create("AkkaApp", conf);
final ActorRef masterActor = system.actorOf(Props.create(MasterActor.class), "Migrate");
masterActor.tell("", ActorRef.noSender());
} catch (Exception e) {
e.printStackTrace();
}
}
MasterActor
public class MasterActor extends UntypedActor {
private final ActorRef randomRouter = getContext().system()
.actorOf(Props.create(StateActor.class).withRouter(new akka.routing.FromConfig()), "StateActor");
#Override
public void onReceive(Object message) throws Exception {
if (message instanceof String) {
getContext().watch(randomRouter);
for (String aState : getStates()) {
randomRouter.tell(aState, getSelf());
}
randomRouter.tell(new Broadcast(PoisonPill.getInstance()), getSelf());
} else if (message instanceof Terminated) {
Terminated ater = (Terminated) message;
if (ater.getActor().equals(randomRouter)) {
getContext().system().terminate();
}
}
}
public List<String> getStates() {
return new ArrayList<String>(Arrays.asList("CA", "MA", "TA", "NJ", "NY"));
};}
StateActor
public class StateActor extends UntypedActor {
private final ActorRef randomRouter = getContext().system()
.actorOf(Props.create(CityActor.class).withRouter(new akka.routing.FromConfig()), "CityActor");
#Override
public void onReceive(Object message) throws Exception {
if (message instanceof String) {
System.out.println("Processing state " + message);
for (String aCity : getCitiesForState((String) message)) {
randomRouter.tell(aCity, getSelf());
}
Thread.sleep(1000);
}
}
public List<String> getCitiesForState(String stateName) {
return new ArrayList<String>(Arrays.asList("Springfield-" + stateName, "Salem-" + stateName,
"Franklin-" + stateName, "Clinton-" + stateName, "Georgetown-" + stateName));
};}
CityActor
public class CityActor extends UntypedActor {
#Override
public void onReceive(Object message) throws Exception {
if (message instanceof String) {
System.out.println("Processing city " + message);
Thread.sleep(1000);
}
}}
Did i implement this use case properly?
I cannot get the code to terminate properly, i get dead letters messages. I know why i am getting them, but not sure how to properly implement it.
Any help is greatly appreciated.
Thanks
I tested and ran your use case with Akka 2.4.17. It works and terminate properly, without any dead letters logged.
Here are some remarks/suggestions to improve your understanding of the Akka toolkit:
Do not use Thread.sleep() inside an actor. Basically, it is never a good practice since a same thread may do many tasks for many actors (this is the default behavior with a shared thread pool). Instead, you can use an Akka scheduler or assign a single thread to a specific Actor (see this post for more details). See also the Akka documentation about that topic.
Having some dead letters is not always an issue. It generally arises when the system stops an Actor that had some messages within its mailbox. In this case, the remaining unprocessed messages are sent to deadLetters of the ActorSystem. I recommend you to check the configuration you provided for the logging of dead letters. If the file forum.conf you provided is your complete configuration file for Akka, you may want to customize some additional settings. See the page Logging of Dead Letters and Stopping actors on Akka's website. For instance, you could have a section like this:
akka {
# instead of System.out.println(conf);
log-config-on-start = on
# Max number of dead letters to log
log-dead-letters = 10
log-dead-letters-during-shutdown = on
}
Instead of using System.out.println() to log/debug, it is more convenient to set up a dedicated logger for each Actor that provides you additional information such as dispatchers, Actor name, etc. If your are interested, have a look to the Logging page.
Use some custom immutable message objects instead of systematic Strings. At first, it may seem painful to have to declare new additional classes but in the end it helps to better design complex behaviors and it's more readable. For instance, an actor A can answer to a RequestMsg coming from an actor B with an AnswerMsg or a custom ErrorMsg. Then, for your actor B, you will end up with the following onReceive() method:
#Override
public void onReceive(Object message) {
if (message instanceof AnswerMsg) {
// OK
AnswerMsg answerMsg = (AnswerMsg) message;
// ...
}
if (message instanceof ErrorMsg) {
// Not OK
ErrorMsg errorMsg = (ErrorMsg) message;
// ...
}
else {
// Unexpected behaviour, log it
log.error("Error, received " + message.toString() + " object.")
}
}
I hope that these resources will be useful for you.
Have a happy Akka programming! ;)
I have created a class and published it as web service. I have created a web method like this:
public void addNewRow(MyObject cob) {
MyAppModule myAppModule = new MyAppModule();
try {
ViewObjectImpl vo = myAppModule.getMyVewObject1();
================> vo object is now null
Row r = vo.createRow();
r.setAttribute("Param1", cob.getParam1());
r.setAttribute("Param2", cob.getParam2());
vo.executeQuery();
getTransaction().commit();
} catch (Exception e) {
e.printStackTrace();
}
}
As I have written in code, myAppModule.getMyVewObject1() returns a null object. I do not understand why! As far as I know AppModule has to initialize the object by itself when I call "getMyVewObject1()" but maybe I am wrong, or maybe this is not the way it should be for web methods. Has anyone ever faced this issue? Any help would be very appreciated.
You can check nice tutorial: Building and Using Web Services with JDeveloper
It gives you general idea about how you should build your webservices with ADF.
Another approach is when you need to call existing Application Module from some bean that doesn't have needed environment (servlet, etc), then you can initialize it like this:
String appModuleName = "org.my.package.name.model.AppModule";
String appModuleConfig = "AppModuleLocal";
ApplicationModule am = Configuration.createRootApplicationModule(appModuleName, appModuleConfig);
Don't forget to release it:
Configuration.releaseRootApplicationModule(am, true);
And why you shouldn't really do it like this.
And even more...
Better aproach is to get access to binding layer and do call from there.
Here is a nice article.
Per Our PM : If you don't use it in the context of an ADF application then the following code should be used (sample code is from a project I am involved in). Note the release of the AM at the end of the request
#WebService(serviceName = "LightViewerSoapService")
public class LightViewerSoapService {
private final String amDef = " oracle.demo.lightbox.model.viewer.soap.services.LightBoxViewerService";
private final String config = "LightBoxViewerServiceLocal";
LightBoxViewerServiceImpl service;
public LightViewerSoapService() {
super();
}
#WebMethod
public List<Presentations> getAllUserPresentations(#WebParam(name = "userId") Long userId){
ArrayList<Presentations> al = new ArrayList<Presentations>();
service = (LightBoxViewerServiceImpl)getApplicationModule(amDef,config);
ViewObject vo = service.findViewObject("UserOwnedPresentations");
VariableValueManager vm = vo.ensureVariableManager();
vm.setVariableValue("userIdVariable", userId.toString());
vo.applyViewCriteria(vo.getViewCriteriaManager().getViewCriteria("byUserIdViewCriteria"));
Row rw = vo.first();
if(rw != null){
Presentations p = createPresentationFromRow(rw);
al.add(p);
while(vo.hasNext()){
rw = vo.next();
p = createPresentationFromRow(rw);
al.add(p);
}
}
releaseAm((ApplicationModule)service);
return al;
}
Have a look here too:
http://www.youtube.com/watch?v=jDBd3JuroMQ
How do I create a webservice using Mono For Android? It seems like everything is about consuming a webservice, and not really about creating one.
I've tried using this: http://www.mono-project.com/Writing_a_WebService
But System.Web.Services.WebService doesn't exist. System.ServiceModel hasn't been translated yet either. Does anyone have clues on how to create a webservice on Mono For Android?
Thanks
I have now tried to implement the following code and tried to run it in the emulator, but the request I make either through my browser or through a REST client, never reaches the HandleRequest.
protected override void OnCreate(Bundle bundle) {
base.OnCreate(bundle);
// Set our view from the "main" layout resource
SetContentView(Resource.Layout.Main);
var startBtn = FindViewById<Button>(Resource.Id.StartBtn);
stopBtn.Clickable = false;
startBtn.Click += SetupListener;
}
private void SetupListener(object sender, EventArgs e) {
_httpListener = new HttpListener();
_httpListener.Prefixes.Add("http://*:9876/");
_httpListener.Start();
_httpListener.BeginGetContext(HandleRequest, _httpListener);
}
private void HandleRequest(IAsyncResult result) {
var context = _httpListener.EndGetContext(result);
var response = "<html>Hello World</html>";
var buffer = Encoding.UTF8.GetBytes(response);
context.Response.ContentLength64 = buffer.Length;
context.Response.OutputStream.Write(buffer, 0, buffer.Length);
context.Response.OutputStream.Close();
_httpListener.BeginGetContext(HandleRequest, _httpListener);
}
I have tried making request like the following: http:// localhost:9876/ , http:// 10.1.1.190:9876/ and http:// 10.0.2.2:9876/ but none of them actually reaches into the application.
This seems like a simple thing to do but I can't seem to find any info anywhere! I've got a solution that has a service that we run in 'Console Mode' when debugging. I want it to be started and 'attached' when I run my unit test from Visual Studio.
I'm using Resharper as the unit test runner.
Not a direct answer to your question, BUT
We faced a similar problem recently and eventually settled on a solution using AppDomain
As your solution is already running as a Console project it would be little work to make it boot in a new AppDomain. Furthermore, you could run Assertions on this project as well as part of unit testing. (if required)
Consider the following static class Sandbox which you can use to boot multiple app domains.
The Execute method requires a Type which is-a SandboxAction. (class definition also included below)
You would first extend this class and provide any bootup actions for running your console project.
public class ConsoleRunnerProjectSandbox : SandboxAction
{
protected override void OnRun()
{
Bootstrapper.Start(); //this code will be run on the newly create app domain
}
}
Now to get your app domain running you simply call
Sandbox.Execute<ConsoleRunnerProjectSandbox>("AppDomainName", configFile)
Note you can pass this call a config file so you can bootup your project in the same fashion as if you were running it via the console
Any more questions please ask.
public static class Sandbox
{
private static readonly List<Tuple<AppDomain, SandboxAction>> _sandboxes = new List<Tuple<AppDomain, SandboxAction>>();
public static T Execute<T>(string friendlyName, string configFile, params object[] args)
where T : SandboxAction
{
Trace.WriteLine(string.Format("Sandboxing {0}: {1}", typeof (T).Name, configFile));
AppDomain sandbox = CreateDomain(friendlyName, configFile);
var objectHandle = sandbox.CreateInstance(typeof(T).Assembly.FullName, typeof(T).FullName, true, BindingFlags.Default, null, args, null, null, null);
T sandBoxAction = objectHandle.Unwrap() as T;
sandBoxAction.Run();
Tuple<AppDomain, SandboxAction> box = new Tuple<AppDomain, SandboxAction>(sandbox, sandBoxAction);
_sandboxes.Add(box);
return sandBoxAction;
}
private static AppDomain CreateDomain(string name, string customConfigFile)
{
FileInfo info = customConfigFile != null ? new FileInfo(customConfigFile) : null;
if (!string.IsNullOrEmpty(customConfigFile) && !info.Exists)
throw new ArgumentException("customConfigFile not found using " + customConfigFile + " at " + info.FullName);
var appsetup = new AppDomainSetup();
//appsetup.ApplicationBase = Path.GetDirectoryName(typeof(Sandbox).Assembly.Location);
appsetup.ApplicationBase = AppDomain.CurrentDomain.SetupInformation.ApplicationBase;
if (customConfigFile==null)
customConfigFile = AppDomain.CurrentDomain.SetupInformation.ConfigurationFile;
appsetup.ConfigurationFile = customConfigFile;
var sandbox = AppDomain.CreateDomain(
name,
AppDomain.CurrentDomain.Evidence,
appsetup);
return sandbox;
}
public static void DestroyAppDomainForSandbox(SandboxAction action)
{
foreach(var tuple in _sandboxes)
{
if(tuple.Second == action)
{
AppDomain.Unload(tuple.First);
Console.WriteLine("Unloaded sandbox ");
_sandboxes.Remove(tuple);
return;
}
}
}
}
[Serializable]
public abstract class SandboxAction : MarshalByRefObject
{
public override object InitializeLifetimeService()
{
return null;
}
public void Run()
{
string name = AppDomain.CurrentDomain.FriendlyName;
Log.Info("Executing {0} in AppDomain:{1} thread:{2}", name, AppDomain.CurrentDomain.Id, Thread.CurrentThread.ManagedThreadId);
try
{
OnRun();
}
catch (Exception ex)
{
Log.Error(ex, "Exception in app domain {0}", name);
throw;
}
}
protected abstract void OnRun();
public virtual void Stop()
{
}
}