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Sending custom telemetry to azure insights

I have a Java azure function (runtime 3.2.0) where I try to send some custom telemetry. I use the following code
TelemetryConfiguration config = TelemetryConfiguration.getActive()
TelemetryClient telemetry = new TelemetryClient(config);
telemetry.trackEvent("Test Event");
telemetry.trackTrace("Test Trace", SeverityLevel.Warning);
telemetry.flush(); // Not sure it is needed
When I check config.getInstrumentationKey() is is the correct key for the Application Insights I want to show the custom telemetry. However, I never receive the custom event and trace in my Insights. Also config.isTrackingDisabled() i false and config.getChannel() seems to make sense.
All code examples I have found and in the official documentation as well it seems to be all the code I need. When I use the logger from the ExecutionContext logs appears in Application inside, so my function has access to it. So I suspect I have overlooked some small important fact or there is some configuration of my function that is not set correctly.
Can anybody help me get custom telemetry to work on my java function?

How to start CloudFoundry app using ReactorCloudFoundryClient?

I used StartApplicationRequest to create a sample request to start the application as given below:
StartApplicationRequest request = StartApplicationRequest.builder()
.applicationId("test-app-name")
.build();
Then, I used the ReactorCloudFoundryClient to start the application as shown below:
cloudFoundryClient.applicationsV3().start(request);
But my test application test-app-name is not getting started. I'm using latest Java CF client version (v4.5.0 RELEASE), but not seeing a way around to start the application.
Quite surprisingly, the outdated version seems to be working with the below code:
cfstatus = cfClient.startApplication("test-app-name"); //start app
cfstatus = cfClient.stopApplication("test-app-name"); //stop app
cfstatus = cfClient.restartApplication("test-app-name"); //stop app
I want to do the same with latest CF client library, but I don't see any useful reference. I referred to test cases written at CloudFoundry official Github repo. I derived to the below code after checking out a lot of docs:
StartApplicationRequest request = StartApplicationRequest.builder()
.applicationId("test-app-name")
.build();
cloudFoundryClient.applicationsV3().start(request);
Note that cloudFoundryClient is ReactorCloudFoundryClient instance as the latest library doesn't support the client class used with outdated code. I would like to do all operations (start/stop/restart) with latest library. The above code isn't working.

A couple things here...
Using the reactor based client, your call to cloudFoundryClient.applicationsV3().start(request) returns a Mono<StartApplicationResponse>. That's not the actual response, it's the possibility of one. You need to do something to get the response. See here for more details.
If you would like similar behavior to the original cf-java-client, you can call .block() on the Mono<StartApplicationResponse> and it will wait and turn into a response.
Ex:
client.applicationsV3()
.start(StartApplicationRequest.builder()
.applicationId("test-app-name")
.build())
.block()
The second thing is that it's .applicationId not applicationName. You need to pass in an application guid, not the name. As it is, you're going to get a 404 saying the application doesn't exist. You can use the client to fetch the guid, or you can use CloudFoundryOperations instead (see #3).
The CloudFoundryOperations interface is a higher-level API. It's easier to use, in general, and supports things like starting an app based on the name instead of the guid.
Ex:
ops.applications()
.start(StartApplicationRequest.builder()
.name("test-app-name").build())
.block();

Apache Camel, Netty4 endpoint as client - memory leakage

I'm quite new to Apache Camel and trying to bring some routes into action.
I have a TCP server which serves large JSON-Messages (up to ~30-50kB in size, where i do not have any control about the source size) that contain lots of measurement data which i want to process using certain additional routes that work fine.
I'm using camel 2.20 within spring-boot environment 1.5.7.
I faced the problem that if i commented out every other routes except the incoming reduced netty4 route (only from and to a counter), see below
#Bean
public RouteBuilder getRoute() {
String fromSource = String.format("netty4:tcp://%s:%d?clientMode=true&textline=true&receiveBufferSize=64000&decoderMaxLineLength=64000",sourceIp,sourcePort);
return new RouteBuilder() {
from(fromSource)
.to("metrics:counter:incomingCounter");
};
}
The route works nearly fine but consumes more and more heap-space (around 2MB every second, where there are messages served with a frequency of around 20-30Hz) until java throws java.lang.OutOfMemoryError: Java heap space.
Without any route no memory-leak was registered, as i can focus the problem to the netty-route
Any help will be appreciated.
Thanks in advance.

I found the resolution myself by debugging the code.
I forgot to set property sync=false in netty4-camel endpoint as i don't want to process message and send an answer back to the server after processing, just consuming - while sync=true (default settings) buffers all incoming data for later response which caused my "memory-leak".
The behavior of "sync" was not totally clear from the netty4-camel documentation (http://camel.apache.org/netty4.html) - i'll suggest an improvement of the documentation (will write a mail with a proposal) to make the usage a little more clearly.
Maybe this helps someone another having a similar problem.
Best

How to use Javapns to Support Apple's Enhanced Notification Format

Greetings,
I am creating a Java based server to create push notifications for Apple's iOS APNs service. I have found Javapns on google code which seems to provide a simple basic framework to communicate with APNs, and which seems to be fairly wide used.
http://code.google.com/p/javapns/
However, reading Apple's docs, there is an "enhanced format" for notifications which supports "expiry" i.e. setting a time (well, in seconds) for a notification to expire if it hasn't yet been delivered. I do not see any way to set this using Javapns, and I am unsure how the APNs service handles expiry of notifications if you do not explicitly set it. So,
Does anyone know how to support the enhanced notification format of APNs specifically how to set the expiry?
Does anyone know how Apple handles notification expiry if it isn't explicitly set?
Does anyone have any suggestions that don't require me to start from scratch, as the server is currently functional as is?
Thanks in advance.
Andrew

I have recently made substantial contributions to the JavaPNS project, which lead to the release of JavaPNS 2.0 a few days ago. That version provides full support for the enhanced notification format, including the ability to set your own expiry.
Sylvain

Nice that you found the java library... to bad you didn't read the docs there.
I'll post some of the highlights below:
The existing code uses the 'Simple notification format' which does not return an error EVER.
See docs at:
http://developer.apple.com/library/ios/#documentation/NetworkingInternet/Conceptual/RemoteNotificationsPG/CommunicatingWIthAPS/CommunicatingWIthAPS.html
I've tried updating to the 'Enhanced notification format' which is supposed to return an error, but I'm unable to get any errors back from the APNS. (also in the link above)
With the Enhanced format, the connection isn't being dropped immediately after sending data, but I'm not getting anything back from my socket.getInputSocket.read() call.
This issue will have to be tabled until I have more time to troubleshoot.
(Someone else commented)
Thanks a lot for looking into it.
I got the same result as yours. Maybe it has something to do with Apple Gateway.
So... you could:
1) Build your own
2) Help improve the existing library
3) Try another library like: https://github.com/notnoop/java-apns
4) Do nothing

Enhanced ios push here.
To send a notification, you can do it in three steps:
Setup the connection
ApnsService service =
APNS.newService()
.withCert("/path/to/certificate.p12", "MyCertPassword")
.withSandboxDestination()
.build();
Create and send the message
String payload = APNS.newPayload().alertBody("Can't be simpler than this!").build();
String token = "fedfbcfb....";
service.push(token, payload);
To query the feedback service for inactive devices:
Map<String, Date> inactiveDevices = service.getInactiveDevices();
for (String deviceToken : inactiveDevices.keySet()) {
Date inactiveAsOf = inactiveDevices.get(deviceToken);
...
}

Java, PhpBB and creation of new topic

I need to programmly create topics on my board. I use Java and HtmlUnit for this.
But there is one problem — if program post once all is okay (forum response is http 200), but if start program again then PhpBB response is «http 304» and redirection to category where new topic should be located but topic not added. The question is how to fix this?
Here is WireShark dump of first successfull topic addition (login, posting):
http://a2k.in/2ai
And here is same request but with 304 redirect:
http://a2k.in/2aj
Posting is from admin account with not posting time limitations.
Here is posting from browser (Chrome) log:
http://a2k.in/2ak
What is the problem? The difference between my request and browser request is in header «Cache-Control: max-age=0», «Origin: http://localhost». Maybe there is problem in cache-controller?

maybe a bit late.. but just saw this...
had the same problem when posting more then one thread.
looks like phpbb has some kind of flood protection.
At least for my implementation it helped to simply add a timer /delay between posts... (think i got it set to somewhere around 3 sec. may work with one or two as well not sure... wasnt in a hurry.)