About return values of hooks

[max-4-3]

So say i create a hook on messages on a specific path that runs a .py file. and in that .py file i spawns a another process ( calling to a bin that is on my systeom ) and then i capture and parse the output of that program and generates a report ( kinda ). and i wanna tell the client, that it is downloaded or not downloaded.

for clearity here is the hook that i aadded:

import subprocess as sp
import sys

def worker(url: str, server_path: str):
    result = {
        "downloaded_path": "",
        "message": ""
    }

    if not url.startswith("https://") or url.startswith("upload-queue-empty;"):
        result["message"] = "Lawn the mown ;)"
        return

    try:
        command = [
            "yt-dlp",
            "-w",
            "-N",
            4,
            "--restrict-filename",
            "--embed-thumbnail",
            "--embed-chapters",
            "--add-metadata",
            "--embed-subs",
            "--newline",
            "--progress-template",
            "%(progress.downloaded_bytes)s %(progress.total_bytes)s",
            "-t",
            "mp4",
            "-o",
            f"{server_path}/%(extractor)s/%(title)s [%(uploader)s@%(extractor)s] [%(id)s].%(ext)s",
            url,
        ]
        output = sp.check_output(list(map(str, command))).decode(errors="ignore").strip()
        for line in output:
            if "Destination: " not in line:
                continue

            result["downloaded_path"] = line.split(":", 1)[1].strip()
            break

        result["message"] = "Downloaded at: {}".format(result["downloaded_path"])
    except Exception as e:
        result["message"] = "Exception happens: {}".format(e)
        raise e

    return result

def main():
    import json
    data: dict[str, str] = json.loads(sys.argv[1])
    return worker(data['txt'], data['ap'])

if __name__ == "__main__":
    main()

and also the volume.conf:

# Upload Folder
[/Upload]
  ~/.copyparty/uploads/
  accs:
    A: maxim
    wG: joe
    rwg: *
  flags:
    xm: aw,c,j,bin/hooks/download_ytdlp_video.py

i tried to

print(result(...)["message"])

and in verbose-hooks log it didn't captured the stdout stream :)

[9001]

the issue you're having is that it doesn't capture stdout by default, so the response is sent to the log instead -- I think the following should work;

• alternative 1: xm: j,c1,a.py
• alternative 2: xm: c1,b.py
• contents of a.py is print('{"stdout":"hello world"}')
• contents of b.py is print("this works too")

[max-4-3]

Thanks it workes!

using this method if i want to write something ( or inform it to myself, what's happening ) i use sys.stderr.write(msg) (and flush) and at the end of the main fn i write to sys.stdout which then copyparty catches and shows to the client :D

i changed c to c1, that's it :)