web-pvtools: PV client tools for web

["Wang, Lin via Tech-talk" <tech-talk@aps.anl.gov>]

Dear all,

web-pvtools in the following GitHub link, has been developed and will be deployed at CSNS office network to access PVs from CA gateway.

https://github.com/wanglin86769/web-pvtools

web-pvtools includes a series of PV client tools that can access IOCs via web browsers. This work is inspired by epics2web [1] and pvws [2], and it supports both Channel Access and PV Access.

The frontend is a single page application based on Vue.js framework and provides the following PV tools,

• ●PV status monitor

• ●

  caget, caput, camonitor, cainfo
• ●probe, StripTool, X/Y Plot

The backend is a customized version of pvws [2] including the following modifications,

• ●Replace Java Servlet with Spring Boot to simplify the REST API code

• ●

  Add "connected" field in WebSocket response to show PV connection status

• ●Replace the Base64 encoding array value with raw data to simplify both WebSocket client and server

• ●Add separate REST APIs for caget, caput and cainfo

For more information, please refer to the GitHub link above.

[1] https://github.com/JeffersonLab/epics2web

[2] https://github.com/ornl-epics/pvws

Regards,

Lin Wang,

Staff Engineer

Controls Group, Accelerator System Division, CSNS (China Spallation Neutron Source)

IHEP (Institute of High Energy Physics)