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gerrit.openbmc.org / openbmc / phosphor-virtual-sensor / 2db8d41fe0e819a38a6c8450ba97048ce7007a69
commit2db8d41fe0e819a38a6c8450ba97048ce7007a69[log] [tgz]
authorGeorge Liu <liuxiwei@inspur.com>Mon Aug 21 16:41:04 2023 +0800
committerGeorge Liu <liuxiwei@inspur.com>Thu Aug 24 08:06:43 2023 +0800
tree5b62afd2f90efcb821364e995d039e584176ed4d
parent9492149041be80c06a46ffd54c7166e00e74dbd4 [diff]
Optimize the createVirtualSensorsFromDBus method logic

Signed-off-by: George Liu <liuxiwei@inspur.com>
Change-Id: I56a7a229a8d5a6f414b2ba036627e4e7a8185bbd
1 file changed
tree: 5b62afd2f90efcb821364e995d039e584176ed4d
  1. subprojects/
  2. .clang-format
  3. .editorconfig
  4. .gitignore
  5. .prettierrc.yaml
  6. dbusSensor.hpp
  7. dbusUtils.hpp
  8. exprtkTools.hpp
  9. LICENSE
  10. meson.build
  11. OWNERS
  12. phosphor-virtual-sensor.service.in
  13. README.md
  14. thresholds.hpp
  15. virtual_sensor_config.json
  16. virtualSensor.cpp
  17. virtualSensor.hpp
README.md

phosphor-virtual-sensor

phosphor-virtual-sensor reads the configuration file virtual_sensor_config.json from one of three locations:

  1. The current directory.
  2. /var/lib/phosphor-virtual-sensor
  3. /usr/share/phosphor-virtual-sensor

By default the repository will install a sample config into (3).

There are two types of data in this file.

virtual sensor configuration information

See virtual_sensor_config.json in this repository for an example. Sensors added this way can use any expression that is accepted by exprtk.

information to get a virtual sensor configuraton from D-Bus

For example:

{
  "Desc": {
    "Config": "D-Bus",
    "Type": "ModifiedMedian"
  }
}

Sensors added this way can only use a set of restricted calculations. Currently the only type supported is modifiedMedian.

The virtual sensor configuration information needs to be added into the relevant hardware configuration file in entity-manager. This method of adding a virtual sensor allows a recipe that builds for different hardware configurations to have different virtual sensors for each configuration.

The virtual sensor configuration in entity manager follows a different format to the JSON in virtual_sensor_config.json (specified in entity-manager/schemas/VirtualSensor.json).