psu-ng: Change main to call non-JSON PSUManager

Change the main function to create the PSU manager object using the
constructor that will pull configuration from D-Bus rather than from a
JSON config

psu-ng: Change main to call non-JSON PSUManager

Change the main function to create the PSU manager object using the
constructor that will pull configuration from D-Bus rather than from a
JSON configuration file.

Since the JSON configuration file parsing information is no longer
passed down to the constructor, remove the argument parsing and default
file handling code.

Update the README to remove the JSON configuration information, add the
D-Bus configuration information.

Signed-off-by: Brandon Wyman <bjwyman@gmail.com>
Change-Id: I04f0d532f862bb4e8aa2e7a88dc06327c90d777d

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Enhance PSU tracing support - add device access info

Move file names for file errors to the journal message. Enhance usablility.

Logging messages for file errors contain the file names inside struc

Enhance PSU tracing support - add device access info

Move file names for file errors to the journal message. Enhance usablility.

Logging messages for file errors contain the file names inside structured
entries rather than directly in the log message. This makes viewing errors
more difficult than need be. Before this change, the journal report needed to
be run with '-o verbose' to see the file names.

Tested: Ran unit tests. All successful
Tested:
* Changes to phosphor-power-supply/main.cpp were tested by running with the
.json configuration file missing in either and both default locations.
* Change to loadJSONFromFile() in utility.cpp for an invalid file was tested by
giving invalid "psu_config.json" file to main program.
* Empty file message was tested by changing main() to allow loadJSONFromFile()
to be called it when the file did not exist.
* Changes to other files were tested by running phosphor-power initialization
and manipulating the code to force execution of various error paths.
* Methods that are changed but were not directly called by phosphor-power
initialization:
PMBus::readBit(), PMBus::readBinary() and PMBus::write().
The changed log messages in these were tested by adding calls to them from
PMBus::read() and then changing code to force execution through paths that
created the log messages.

Signed-off-by: Jay Meyer <jaymeyer@us.ibm.com>
Change-Id: I1f0c01716495ac7022d5234e9a8dfdab8195c186

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Updates to load JSON file from default location

The default (read-only) location for the JSON configuration file should
be /usr/share/phosphor-psu-monitor. Load from there if a file does not
exist i

Updates to load JSON file from default location

The default (read-only) location for the JSON configuration file should
be /usr/share/phosphor-psu-monitor. Load from there if a file does not
exist in /etc/phosphor-psu-monitor.

Signed-off-by: Brandon Wyman <bjwyman@gmail.com>
Change-Id: I704d24ecb55c948843eaea74b648d4b7b6c5a8a2

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psu: Add code to get pollInterval from JSON file

Add in a helper function to open JSON file and parse out the configuration
properties. Use the helper function to get the pollInterval in the constru

psu: Add code to get pollInterval from JSON file

Add in a helper function to open JSON file and parse out the configuration
properties. Use the helper function to get the pollInterval in the constructor.

Signed-off-by: Brandon Wyman <bjwyman@gmail.com>
Change-Id: Ia8cf1c148a1685e2e09703c02e469a0bff034af5

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psu: Introduce the PowerSupply class

The Power Supply Manager (PSUManager) class will need a list of power
supplies to work with. Create these via the PowerSupply class.

Update Power Supply Manager

psu: Introduce the PowerSupply class

The Power Supply Manager (PSUManager) class will need a list of power
supplies to work with. Create these via the PowerSupply class.

Update Power Supply Manager to call the initialization function, and
update the power state.

Update clearFaults() to go through the list of power supplies and call
their individual clearFaults() functions.

Update the power supply manager analyze() function to go through the
list of power supplies and call their analyze() function.

Update the power supply manager updateInventory() function to call the
updateInventory() function in each power supply in the list.

Update the meson.build file to include the header files in the parent
directory, and link with the library containing the utility functions
the binary will need to use.

Signed-off-by: Brandon Wyman <bjwyman@gmail.com>
Change-Id: I743180d47f1b25d34c7e7001b64a6197905b86ff

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psu: Update to use Power Supply Manager class

Create a power supply manager class that will be used create a list of
power supplies to manage.

Change-Id: I4c392f7060fbd06dbe6a9417810ed911b3ea689a
S

psu: Update to use Power Supply Manager class

Create a power supply manager class that will be used create a list of
power supplies to manage.

Change-Id: I4c392f7060fbd06dbe6a9417810ed911b3ea689a
Signed-off-by: Brandon Wyman <bjwyman@gmail.com>

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psu: Add command line argument for JSON config file

Allow for a -c/--config argument to pass in full path to a JSON
configuration file. This argument is optional, if not specified, load
the JSON con

psu: Add command line argument for JSON config file

Allow for a -c/--config argument to pass in full path to a JSON
configuration file. This argument is optional, if not specified, load
the JSON configuration file from:
/etc/phosphor-psu-monitor/psu_config.json.

Change-Id: I94856c23b09eff32039a1cd26ff35f6f354ea3d4
Signed-off-by: Brandon Wyman <bjwyman@gmail.com>

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Add basic phosphor-psu-monitor application

Change-Id: I3f892e6789c9b081aea04668de6fe0155963d521
Signed-off-by: Brandon Wyman <bjwyman@gmail.com>