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gerrit.openbmc.org / openbmc / phosphor-virtual-sensor / 4e6081bc836783d9cdb96b3b8be7042521cb6e60
commit4e6081bc836783d9cdb96b3b8be7042521cb6e60[log] [tgz]
authorGeorge Liu <liuxiwei@ieisystem.com>Thu Sep 19 10:09:04 2024 +0800
committerGeorge Liu <liuxiwei@ieisystem.com>Thu Sep 19 10:39:02 2024 +0800
tree0268cd4288265f4406f1a6e9827b2c88d3ce4f3d
parentb4cea1b1004a067be3503c59454aa21e8b369250 [diff]
Add func for sum value when sensor from DBus

Add a function that calculates the sum of all values.

Signed-off-by: George Liu <liuxiwei@ieisystem.com>
Change-Id: I922aab1a034be5c17f8725298ead99b113da5b5f
1 file changed
tree: 0268cd4288265f4406f1a6e9827b2c88d3ce4f3d
  1. subprojects/
  2. test/
  3. .clang-format
  4. .editorconfig
  5. .gitignore
  6. .prettierrc.yaml
  7. calculate.cpp
  8. calculate.hpp
  9. dbusSensor.cpp
  10. dbusSensor.hpp
  11. dbusUtils.cpp
  12. dbusUtils.hpp
  13. exprtkTools.hpp
  14. LICENSE
  15. meson.build
  16. meson.options
  17. OWNERS
  18. phosphor-virtual-sensor.service.in
  19. README.md
  20. thresholds.hpp
  21. virtual_sensor_config.json
  22. virtualSensor.cpp
  23. 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 configuration 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).