Import from Slack / mmetl finds no posts

Troubleshooting
2

Hi David and welcome to the Mattermost forums!

I think mmetl requires a specific folder structure. Using the slack export you can download from their website, an example archive looks like this (small demo setup of mine):

zufällig/
zufällig/2022-08-11.json
export/
export/2022-08-11.json
testchannel1/
testchannel1/2022-08-11.json
testchannel2/
testchannel2/2022-08-11.json
users.json
allgemein/
allgemein/2022-08-11.json
integration_logs.json
channels.json

The channels.json then contains the channelnames and the tool is looking for json files in the folders called like the channelnames in the channels.json.
Can you verify that your structure looks exactly like this?

And also with regards to the format: Here’s an example of my channels.json which describes the channel allgemein:

{
    "id": "C03TDG5P39R",
    "name": "allgemein",
    "created": 1660275891,
    "creator": "U03TG3CS7MJ",
    "is_archived": false,
    "is_general": true,
    "members": [
        "U03TG3CS7MJ"
    ],
    "topic": {
        "value": "",
        "creator": "",
        "last_set": 0
    },
    "purpose": {
        "value": "Dies ist der eine Channel, der immer alle einbezieht. Es ist ein toller Ort für Mitteilungen und Team-weite Unterhaltungen.",
        "creator": "U03TG3CS7MJ",
        "last_set": 1660275891
    }
},

And looking at the allgemein/2022-08-11.json file in my dump, this is what an example entry looks like:

[
    {
        "type": "message",
        "subtype": "channel_join",
        "ts": "1660275891.863739",
        "user": "U03TG3CS7MJ",
        "text": "<@U03TG3CS7MJ> ist dem Channel beigetreten"
    }
]

Can you confirm the structure for the files in the ZIP as well as the JSON in the files?