Plugin access to gcode analysis data

Development
1

I am starting to look at implementing a plug in.. minor inconvenience of having to learn python first.. I wonder if someone could give me some pointers on how to get access to the gcode analysis data. I am specifically looking for the zmax/min and slice thickness values so I can determine a current slice count. I could not find the slice count/current slice data stored explicitly - the gcode viewer calculates it on the fly for display.

I am currently using the MQTT plug in to provide a published feed to Home Assistant. The existing Home Assistant Integration polls and gets upset when octoprint is offline. The only info I am missing for my planned interface is the slices/current slice. Still trying to determine if its something I can bolt on to the MQTT plugin, or if i will need to attack it another way. Very new to octoprint. MQ messaging expert.

2

I'm not sure if it will give you all the information you need, but from the python side you could retrieve the metadata of a file.

https://docs.octoprint.org/en/master/modules/filemanager.html#octoprint.filemanager.storage.StorageInterface.get_metadata

You pass it the internal path to the file so something like self._file_manager.get_metadata("local", "3DBenchy_PET_1.75.gcode") should work to return what's stored in the metadata.

{
    "3DBenchy_PET_1.75.gcode": {
        "thumbnail_src": "prusaslicerthumbnails",
        "hash": "0a9e1700ec1cc1b5c46be5340903265d89ba6167",
        "thumbnail": "plugin/prusaslicerthumbnails/thumbnail/3DBenchy_PET_1.75.png?20200506171229",
        "analysis": {
            "estimatedPrintTime": 4229.236067879765,
            "printingArea": {
                "maxZ": 47.88,
                "minX": 113.029,
                "maxX": 290.0,
                "maxY": 290.0,
                "minY": 130.792,
                "minZ": 0.28
            },
            "dimensions": {
                "width": 176.971,
                "depth": 159.208,
                "height": 47.6
            },
            "filament": {
                "tool0": {
                    "volume": 10.73116891151654,
                    "length": 4461.501590000148
                }
            }
        }
    }
}