I’m using CEP (Complex Event Processing) Proton FIWARE Generic Enabler and I've first created a project where I defined a Consumer that outputs certain types of events to a file.
I realised that every time that I need to restart the Java application (ProtonOnWebServer) the output file generated by the Consumer is overwritten. Is this the supposed behaviour or is there any append mode where all the previous events written to the file don’t get lost?
This is the intended behaviour.
Every time the CEP starts a new run, it re-writes the content of the output file. Currently it is not configurable.
Related
I have created a TestExecutionListener that wants to persist additional data in the XML files created by the LegacyXmlReportGeneratingListener (you know, the TEST-testClassName.xml ones in /build/test-reports/test).
I have registered the TestExecutionListener via /META-INF/services/org.junit.platform.launcher.TestExecutionListener.
Everything works fine so far, except the fact, that the LegacyXmlReportGeneratingListener runs afterwards and overwrites my changes. Or on a freshly built system, my listener can't - of course - even find the XMLs.
How can I tell my custom listener to run last or at least after the report generating listeners?
Thanks in advance
In the documentation for app-indexeddb-mirror at https://elements.polymer-project.org/elements/app-storage?active=app-indexeddb-mirror there is a section I've copied below. I think I'm running into an error because the indicated file isn't loading, but I'm not sure how to fix the issue. Do I add a reference in staticFileGlobs in sw-precache-config.js or somewhere else?
In order to ensure that operations on IndexedDB block the main browser thread as little as possible, app-indexeddb-mirror relies on a WebWorker to operate on its corresponding IndexedDB database. If you are vulcanizing or otherwise combining your source files before your app is deployed, make sure that you include the corresponding worker script (app-indexeddb-mirror-worker.js) among your deployable files. You can configure the path to the worker script with the worker-url attribute.
The error I'm getting:
GET https://example.com/src/common-worker-scope.js?https://example.com/bower_components/app-storage/app-indexeddb-mirror/app-indexeddb-mirror-worker.js net::ERR_INTERNET_DISCONNECTED
What exactly is the timing/thread of the Application_Launching method on WP8? Specifically, in relation to the UI loading/rendering sequence?
I have an app where some global init is being done within Application_Launching. I'm getting a crash report from a method that's called during data binding on the start page's XAML; the crash is consistent with said global init not taking place.
EDIT: I'm calling a native (C++) method which is reading a file into a mallocated memory block in a global variable that's initialized to null. Said variable is dumped as a part of crash reporting; I've got a report where it's null.
Pasting the code would be rather pointless IMHO.
When starting the app, the Launching event is raised. However, the app can later be put in a dormant state, in a process that is called "tombstoning". When a tombstoned app is resumed, it won't raise the Launching event but the Activated event instead. It's very likely that you forgot to handle that case.
To test it easily, go in the properties of your Windows Phone project, in the Debug tab, and check the "Tombstone upon deactivation while debugging" option. From there, every time the app is deactivated while the debugger is attached (typically, when pressing the home button on the emulator), the app will be tombstoned, and you can make sure that it resumes properly when switching back to it.
I've got another theory. It's not about the library being loaded at the wrong time, it's about the library being unloaded. Since almost all of my native functions are static and the state is global, there are no active native objects, and the COM subsystem has a zero ref count on the module. As per COM rules, modules like that are fair game for unloading anytime. On a subsequent native function call, the library is reloaded, but the global state is gone.
From the next version, I'll keep one live native object for the app's lifetime. We'll see if the crash comes back.
Scenario:
I have multiple browser clients whose internet connection varies from very fast to super slow. Because of that they might not see same state of a document.
I'm using Google shortcut file since the document is actually being stored in database.
saving document to database is triggered from client-side.
Question: how do I know which client got the most up to date document that should be saved to the database?
You are right that you can't rely on any particular client being the most up to date at a particular time. There is no easy way to determine that, since that can change at any given instant. (Although you can make sure that you don't have any unsaved changes in a particular client by looking at the document save state.)
Rather than trying to do this based on client state, you can use the export capability that is part of the Drive API, which will give you a valid snapshot of the data with a revision number so you can track what version you have.
Note that this is a brand new feature, so its not yet well documented. The response is a json object with the appId, revision number, and a data field which contains a json version of the document. It looks something like this, for a document that has a collab list "list" and collab string "text" in the root:
{"appId":"788242802491","revision":17,
"data":{"id":"root","type":"Map",
"value":{
"list":{"id":"gde9s8z5khjarls7o","type":"List","value":[]},
"text":{"id":"gdef98qdhiq679af","type":"EditableString","value":"This is a test 2."}}}}
I have created an applet which is a java swing based messenger which runs fine on browsers. Now i have to host this applet on a webpage and allow users to test my applet. I need to record time they take for each task using the messenger and and the errors they commit. After the study is complete the user has to be displayed the time and the no of errors.
I am not able to figure out how to record times for each task that the user has to do in my messenger application. one way would be to record time on click of right buttons I can do it programmatically in Java Swing for correct click on buttons, but how do i send this info to HTML Page from an applet.
I don't have any clue how i would capture errors.
Suggestions needed
For storing exception and the info you can use a Logger.
From doc,
A Logger object is used to log messages for a specific system or application component.
So when you get any exception write it to the Logger file. It has all the set of required methods to log the information.
Example:
When you are entering a method use Logger.entering to log the method entry. Similarly you have to write all the actions using respective methods provided by Logger class which may either be message or exceptions or errors which ever you want to show to the user through this log file.
P.S: We use it in our application and it is very handy.