Possible to send JSON via MQTT?

I’m trying to log data from mpp-solar to a Kotori instance (see https://github.com/daq-tools/kotori/issues/50), and it seems they’d prefer to have the data in a JSON block. I see that mpp-solar supports that output (-o json), but it looks like it just writes to the screen rather than to the specified MQTT broker. Is there a way to do this that I’m missing? Or if not, could it be added?

[jblance]

added in version 0.7.40 e.g. below (make sure to change -p, -q and --mqtttopic options to suit) $ mpp-solar -p test -o json_mqtt -q screen --mqtttopic kotori -c QDI

{'topic': 'kotori', 'payload': '{"ac_output_voltage": 230.0, "ac_output_frequency": 50.0, "max_ac_charging_current": 30, 
"battery_under_voltage": 42.0, "battery_float_charge_voltage": 54.0, "battery_bulk_charge_voltage": 56.4, 
"battery_recharge_voltage": 46.0, "max_charging_current": 60, "input_voltage_range": "Appliance", "output_source_priority": 
"Utility first", "charger_source_priority": "Solar + Utility", "battery_type": "AGM", "buzzer": "enabled", "power_saving": "disabled", 
"overload_restart": "disabled", "over_temperature_restart": "disabled", "lcd_backlight": "enabled", 
"primary_source_interrupt_alarm": "enabled", "record_fault_code": "disabled", "overload_bypass": "disabled", 
"lcd_reset_to_default": "enabled", "output_mode": "single machine output", "battery_redischarge_voltage": 54.0, 
"pv_ok_condition": "As long as one unit of inverters has connect PV, parallel system will consider PV OK", "pv_power_balance": 
"PV input max power will be the sum of the max charged power and loads power", "unknown_value_in_response_25": "000"}'}

[jblance]

It shouldn’t be too hard. I’ll try to add this in the next day or two