Developing & Running an Adapter Set Using Eclipse [Java]

nttam

Hi Mr Gianluca.finocchiaro,
That error happen when received message from midleware at adapter, as this example: Data -> var_fr6: [V010103]: Tra cá»©u dá»¯ liá»?u thÃ nh cÃ´ng. but when running by source code its ok: [V010103]: Tra cứu thông tin khách hàng thành công.

Gianluca Finocchiaro

Hi nttam,

just to clarify the current scenario: the middleware sends "data" to the adapter and, from there, are forwarded to the clients, is it correct? So, on the client side such data appear in a wrong format. Please confirm my understanding, since we need to identify where the potential encoding/decoding issue really occurs.

Thanks,
Gianluca

nttam

Hi Mr Gianluca.finocchiaro,
Yes, it is correct. But it's error unicode font at the adapter, example which I send you above is log of lightstreammer server. Thanks!

Gianluca Finocchiaro

Ok nttam,

could you please provide us with a log excerpt from which such it is possible to analyze such issue?

Thanks
Gianluca

nttam

Hi Mr Gianluca.finocchiaro,
plz refer image below, that is log of lightstreamer server (in terminal screen), of course client show data with wrong format like that. Thanks!

Gianluca Finocchiaro

Hi mttam,

the image is not clear. Please stop the server instance and remove the current Lightstreamer.log, just to start from clean scenario.
Please also update the lightstreamer_log_conf.xml changing the levels of the following loggers:

<logger name="LightstreamerLogger.subscriptions" level="DEBUG"/>
<logger name="LightstreamerLogger.pump" level="DEBUG"/>
<logger name="LightstreamerLogger.push" level="DEBUG"/>

then repeat your test and send to info@lightstreamer.com the log file.

Thanks and regards,
Gianluca

nttam

Hi Mr Gianluca.finocchiaro,
I've send email with log file. Thanks so much!

Gianluca Finocchiaro

Hi nttam,

after having looked at the log and exchanged some private messages, we finally found out that the issue was due to a conversion of raw data sent by the middleware. In fact, raw data should have been encapsulated into a String object also specifying the right charset, as follows:

[SYNTAX=JAVA]new String(data, "UTF-8")[/SYNTAX].

When the Adapter Set runs from Eclipse, messages flow with no issue as you have specified UTF-8 as default text file encoding (set from Preferences->Workspace).

Thanks and Regards,
Gianluca

nttam

Hi Mr Gianluca.finocchiaro,
Yes, we found the reason of this issue, thank you very much for your support and merry Christmas! ^-^

synthi

Hello Gianluca

Is this procedure doable on IntelliJ IDEA too ? (I'm having some difficulties! :Smile_Ac: )

What I'd like to do is to have on my MAC a running LightStreamer server, and I want to go in DEBUG mode in with an adapter using IntelliJ.
Is it something possible to do ?

Thank you
Antonio

Gianluca Finocchiaro

Hi Antonio,

a similar procedure should be doable on IntelliJ IDEA as well and a detailed post on this is coming soon, stay tuned!

Thanks and Regards,
Gianluca

synthi

I was able to do it :Smile_Ad:

the problem was the declaration of the ENV VAR "LS_HOME"

I can declare it, but after is not recognized (or at least in the same project...)

I had to import all the JAR from LS directly in the project, and I had to declare the JAR creation in the right place...

so I removed all the
VM Arguments leaving only
-Xmx2048M
-ea

Gianluca Finocchiaro Hi Antonio,

a similar procedure should be doable on IntelliJ IDEA as well and a detailed post on this is coming soon, stay tuned!

Thanks and Regards,
Gianluca

Gianluca Finocchiaro

Hi Antonio,

please have a look here.

Our recommendation is to specify all VM Arguments, in order to avoid any issue you may have with class loading.

Thanks and Regards,
Gianluca

micro123456

I have created grouped adapters in eclipse and when trying to deploy adapters getting "No plugin found for prefix 'adapter' Imran Khan in the current project".Nawaz Sharif Is there any option in eclispe to deploy all adapters. If so could you please share steps how to deploy multiple adapters using eclipse IDE instead of CLI.

Giuseppe Corti

Hi,

The instruction provided in the original post by Gianluca should work also in your case, when multiple adapters are involved.
Please consider that point 3., "Develop the custom Adapter Set", actually provides the possibility of developing many adapters, to be precise, each Adapter Set can contain only one Metadata Adapter but many Data Adapters.

Please could you explain better what you mean by " grouped adapters"? Could you also a little expand an the steps you followed?

Regards,
Giuseppe

nimbusgb

Although I have had my adaptors and eclipse and lightstreamer all working previously on my Desktop I have moved everything ( via Mercurial ) to a laptop so I can take advantage of some rare UK sunshine.

For the life of me I can't get Lightstreamer to run up under Eclipse. I keep getting

Error reading logging configuration file conf\lightstreamer_log_conf.xml:java.lang.NullPointerException
    at com.lightstreamer.init.c.a(c.java)
    at com.lightstreamer.a.e.d.a(d.java)
    at com.lightstreamer.f.b.a(b.java)
    at com.lightstreamer.f.b.a(b.java)
    at com.lightstreamer.f.a.a(a.java)
    at com.lightstreamer.LS.main(LS.java)
Unable to load settings for logging system.
Startup failed.

The file is there and seems to work outside eclipse

everything appears to be set correctly and LS runs just fine when run from the batch file in the Windows directory outside eclipse.

Tearing my hair out ( Don't want to go back inside the office! :Smile_Ab: )

nimbusgb

A re-install in a different directory and the problem has moved a little

05.Jul.19 16:31:44,027 <DEBUG> Monitoring system started05.Jul.19 16:31:44,027 <DEBUG> Initializing answering system...
05.Jul.19 16:31:44,028 < INFO> SERVER pool size set by default at 1000.
05.Jul.19 16:31:44,036 <DEBUG> Initializing SERVER thread pool; max size = 1000; initial size = 10
05.Jul.19 16:31:44,087 < WARN> THE MONITORING DASHBOARD IS NOT PASSWORD PROTECTED. Remember to protect it in production! For more details, see PRODUCTION_SECURITY_NOTES.TXT.
05.Jul.19 16:31:44,096 < INFO> Pump pool size set by default at 8.
05.Jul.19 16:31:44,096 <DEBUG> Initializing PUMP thread pool; max size = 8; initial size = 8
05.Jul.19 16:31:44,104 <DEBUG> Answering system started
05.Jul.19 16:31:44,104 <DEBUG> Initializing MPN Module...
05.Jul.19 16:31:44,107 <DEBUG> Found com.lightstreamer.database_lib_path as C:\GMSls/lib/mpn/hibernate/*;C:\GMSls/lib/lightstreamer.jarC:\GMSls
05.Jul.19 16:31:44,107 <DEBUG> Found paths: C:\GMSls/lib/mpn/hibernate/*
05.Jul.19 16:31:44,107 <DEBUG> Found jar: C:\GMSls\lib\mpn\hibernate\activation-1.1.1.jar
05.Jul.19 16:31:44,107 <DEBUG> Found jar: C:\GMSls\lib\mpn\hibernate\antlr-2.7.7.jar
05.Jul.19 16:31:44,107 <DEBUG> Found jar: C:\GMSls\lib\mpn\hibernate\c3p0-0.9.5.2.jar
05.Jul.19 16:31:44,108 <DEBUG> Found jar: C:\GMSls\lib\mpn\hibernate\classmate-1.3.4.jar
05.Jul.19 16:31:44,108 <DEBUG> Found jar: C:\GMSls\lib\mpn\hibernate\dom4j-1.6.1.jar
05.Jul.19 16:31:44,108 <DEBUG> Found jar: C:\GMSls\lib\mpn\hibernate\geronimo-jta_1.1_spec-1.1.1.jar
05.Jul.19 16:31:44,108 <DEBUG> Found jar: C:\GMSls\lib\mpn\hibernate\hibernate-c3p0-5.1.10.Final.jar
05.Jul.19 16:31:44,108 <DEBUG> Found jar: C:\GMSls\lib\mpn\hibernate\hibernate-commons-annotations-5.0.1.Final.jar
05.Jul.19 16:31:44,108 <DEBUG> Found jar: C:\GMSls\lib\mpn\hibernate\hibernate-core-5.1.10.Final.jar
05.Jul.19 16:31:44,108 <DEBUG> Found jar: C:\GMSls\lib\mpn\hibernate\hibernate-jpa-2.1-api-1.0.0.Final.jar
05.Jul.19 16:31:44,109 <DEBUG> Found jar: C:\GMSls\lib\mpn\hibernate\jandex-2.0.3.Final.jar
05.Jul.19 16:31:44,109 <DEBUG> Found jar: C:\GMSls\lib\mpn\hibernate\javassist-3.23.1-GA.jar
05.Jul.19 16:31:44,109 <DEBUG> Found jar: C:\GMSls\lib\mpn\hibernate\jaxb-api-2.3.0.jar
05.Jul.19 16:31:44,109 <DEBUG> Found jar: C:\GMSls\lib\mpn\hibernate\jaxb-core-2.3.0.1.jar
05.Jul.19 16:31:44,109 <DEBUG> Found jar: C:\GMSls\lib\mpn\hibernate\jaxb-impl-2.3.0.1.jar
05.Jul.19 16:31:44,109 <DEBUG> Found jar: C:\GMSls\lib\mpn\hibernate\jboss-logging-3.3.0.Final.jar
05.Jul.19 16:31:44,109 <DEBUG> Found jar: C:\GMSls\lib\mpn\hibernate\log4j-over-slf4j-1.7.25.jar
05.Jul.19 16:31:44,110 <DEBUG> Found jar: C:\GMSls\lib\mpn\hibernate\mchange-commons-java-0.2.12.jar
05.Jul.19 16:31:44,110 <DEBUG> Found path: C:\GMSls/lib/lightstreamer.jarC:\GMSls
05.Jul.19 16:31:44,118 <ERROR> Can't find database management class.
java.lang.ClassNotFoundException: com.lightstreamer.c.e.e
	at java.net.URLClassLoader.findClass(Unknown Source)
	at java.lang.ClassLoader.loadClass(Unknown Source)
	at java.net.FactoryURLClassLoader.loadClass(Unknown Source)
	at java.lang.ClassLoader.loadClass(Unknown Source)
	at com.lightstreamer.init.c.a(c.java)
	at com.lightstreamer.c.b.a.<init>(a.java)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
	at java.lang.reflect.Constructor.newInstance(Unknown Source)
	at com.lightstreamer.i.f.a(f.java)
	at com.lightstreamer.i.f.a(f.java)
	at com.lightstreamer.i.f.a(f.java)
	at com.lightstreamer.c.m.a(m.java)
	at com.lightstreamer.i.q.i(q.java)
	at com.lightstreamer.i.q.<init>(q.java)
	at com.lightstreamer.f.a.a(a.java)
	at com.lightstreamer.LS.main(LS.java)
05.Jul.19 16:31:44,119 <ERROR> Error in MPN Module initialization: Database management class not supplied.
05.Jul.19 16:31:44,119 <FATAL> MPN Module initialization error.

Ever get the feeling that you are in a portal from hell?

nimbusgb

It would appear that this lot does not play well with Eclipse EE edition. Switched to the plain java version and all my challenges went away.

Dario Crivelli

Hi, Thank you for the report.
It seems as though that environment caused getClassLoader to return null for some classes belonging to Lightstreamer.
BTW, have you managed to put the "ls-bootstrap.jar" library in the boot classloader? It is supposed to be in the system classloader.
Anyway, we can put a workaround and prevent the exception, but we cannot ensure the correct loading of classes in this scenario.