Running a java device server

# 7 years ago
Faissal M	I'm working on a project how to read data from the arduino board by the serialline, first thing i define my class with pogo and save it into a special folder when im trying to compile it with the terminal by the command "javac ArduinoLink.java" i find a lot of errors for exemple : package org.tango.utils does not exist the majority of errors package dont exist , if there's a link on how to run a device server it will be so helpful ?

# 7 years ago

I'm working on a project how to read data from the arduino board by the serialline, first thing i define my class with pogo and save it into a special folder when im trying to compile it with the terminal by the command
"javac ArduinoLink.java" i find a lot of errors for exemple :
package org.tango.utils does not exist the majority of errors package dont exist , if there's a link on how to run a device server it will be so helpful ?

# 7 years ago
Pascal	Hi Faissal To compile (or run) a Java device server, you need to export the environment variable CLASSPATH. Where CLASSPATH contains at least JTango.jar. Pascal

# 7 years ago
Ingvord	Another approach is to use single executable jar. This means to assemble all the dependencies into a single jar with defined main class. This way Tango Java server can be launched like this: `java -jar YouTangoServer.jar ${INSTANCE, aka development or sys}` You can give a try to this project: MStatusFacade Clone and build it: `$> git clone https://github.com/tango-controls/MStatusFacade.git … $> cd MStatusFacade $> mvn package -Psingle-executable-jar $> java -jar target/MStatusFacade-1.2-SNAPSHOT.jar develoment` The output must look like this: exception message is: IDL:Tango/DevFailed:1.0 Error Level 0: - desc: device dserver/mstatusfacade/develoment not defined in the database hzgxenvtest.desy.de:10000 ! - origin: DataBase::ImportDevice() - reason: DB_DeviceNotDefined - severity: ERROR Error Level 1: - desc: Cannot execute command DbImportDevice on sys/database/2 - origin: Connection.command_inout() - reason: TangoApi_CANNOT_EXECUTE_COMMAND - severity: PANIC ERROR 2017-03-14 11:00:36,593 [Thread-0 - ] org.tango.server.events.EventManager.<init>:119 - ControlSystem/EventBufferHwm property is not a number: Note that I do not have MStatusServer defined in my Tango Database so this output is pretty fine. It indicates that server actually starts!

# 7 years ago

Ingvord

Another approach is to use single executable jar. This means to assemble all the dependencies into a single jar with defined main class. This way Tango Java server can be launched like this:


java -jar YouTangoServer.jar ${INSTANCE, aka development or sys}

You can give a try to this project: MStatusFacade

Clone and build it:


$> git clone https://github.com/tango-controls/MStatusFacade.git
…
$> cd MStatusFacade
$> mvn package -Psingle-executable-jar
$> java -jar target/MStatusFacade-1.2-SNAPSHOT.jar develoment

The output must look like this:


exception message is: IDL:Tango/DevFailed:1.0
Error Level 0:
         - desc: device dserver/mstatusfacade/develoment not defined in the database   hzgxenvtest.desy.de:10000 !
         - origin: DataBase::ImportDevice()
         - reason: DB_DeviceNotDefined
         - severity: ERROR

Error Level 1:
         - desc: Cannot execute command DbImportDevice on sys/database/2
         - origin: Connection.command_inout()
         - reason: TangoApi_CANNOT_EXECUTE_COMMAND
         - severity: PANIC

ERROR 2017-03-14 11:00:36,593 [Thread-0 - ] org.tango.server.events.EventManager.<init>:119 - ControlSystem/EventBufferHwm property is not a number:

Note that I do not have MStatusServer defined in my Tango Database so this output is pretty fine. It indicates that server actually starts!

# 7 years ago
Faissal M	i set the Classpath to a JTango.jar file so it works , but another problem appears when i want to run it "could not find or load main class " i try to write "java PACKAGENAME.CLASSNAME" it doesn't work Attachments: 76Kb

# 7 years ago
Ingvord	Try to add current location to the class path: `java -cp .:${CLASSPATH} ArduinoLink`