P05 review rehearsal

1. Igor Khokhriakov
Computing Infrastructure
@PETRA III beamline P05 (&P07)
HZG, 21/03/18

2. X-Environment

3. PreExperiment Data Collector
FEATURES:
• Customizable on-the-fly view forms defined in YAML
• Different policies are applicable to the view forms: web, web-readonly, tango
• Supports different validations: number, double, string, text, required
• Provides tango access to data
• Offline clients

4. Status Server
FEATURES:
• Forms continuous timeline of the experiment
• Simple configuration, defined in XML
• Values can be obtained through event or polling mechanism
• Different interpolation strategies: last, nearest and linear

5. Control Environment [IDL Scripts]

6. TangoWebapp: All-in-one screenshot

7. X-Environment

8. DataFormatServer
NXComposer:
YAML NeXus definition:

9. Integrating everything together

10. Data transfer between Tango servers.
Apache Camel Integration.

11. Apache Camel routes.

12. Packaging and
Continuous Integration

13. Packaging
Every component is an independent single
Executable jar file!
Dedicated project holds all configuration
files.

14. Packaging

15. Continuous Integration.
1. Release
2. Assemble & test
3. Deploy
4. Feedback
5. Repeat
1. Release
2. Assemble & test
3. Deploy
4. Feedback
1. Release
2. Assemble & test
3. Deploy
4. Feedback

16. 16
A good example of how Java is used as an
infrastructure at a beamline
KIT CMOS Camera server deployment

17. ●
Beamline scientist friendly environment
●
Integrates smoothly into the user interface
●
Fully automatized and easy deployment
●
Integration with DESY computer center
●
Opensource, available @bitbucket.org/hzgwpn
Summary

18. Thank you!
Questions?

19. ezTangORB
Consider the following example:
DeviceProxy proxy = new DeviceProxy("some-device");
DeviceAttribute attribute = proxy.read_attribute("some-attribute");
if(result.hasFailed()){
throw new Exception("Can not read attribute.");
}
int dataFormat = result.getDataFormat()
int dataType = result.getType()
double result;
switch(dataType){
case Tango_DEV_Double:
switch(dataFormat){
case _SCALAR:
result = attribute.extractDouble()
...
}
...
}
...
Using the API the same result can be achieved with the following code:
TangoProxyWrapper proxy = new TangoProxyWrapper("some-device");
double result = proxy.<Double>readAttribute("some-attribute");
...
This library is a part of the Tango distribution since version 9.