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Server program that accepts HTTP requests with a JSON payload and forwards the request to another program after transformation.

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ibizaman/jsondispatch

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Table of Contents

  1. Json Dispatch
    1. Use Cases
      1. Send file to aria2 and set download dir based on category
    2. Install & Use
      1. Server
      2. Browser extension
    3. Develop
      1. Files Layout
    4. License

Json Dispatch

Server program written in python that accepts HTTP POST requests with a JSON payload and forwards the request to another program, after transforming it in a configurable way. Quite generic, but that's the goal. See 1.1 for concrete examples.

Python 3.6 supported only, although other Python 3.X versions should work too.

Also provides a Firefox and Chrome extension that talks to the server and allows you to right click on a URL/link in your browser and "send it to" the server.

Use Cases

Send file to aria2 and set download dir based on category

Config file /etc/jsondispatch/jsondispatch.conf:

cors:
  domain: '*'

commands:
  aria2:
    url: http://localhost:6800/jsonrpc
    rpc_secret: mYs3Cr3t

triggers:
  download_program_uri:
    - command: aria2
      method: addUri
      arguments:
        url: {url}
        dir: /srv/backups/programs

JSON payload to send to the server with URL ending with /trigger/download_program_uri with POST request:

{
    "url": "magnet:?xt=urn:btih:204a1789dd04e4d8f5a4e098e8f777794888f4ad&dn=archlinux-2017.12.01-x86_64.iso&tr=udp://tracker.archlinux.org:6969&tr=http://tracker.archlinux.org:6969/announce"
}

When sending the above POST request, jsondispatch will call the addUri RPC method of aria2 with the given magnet URL and the hardcoded dir argument.

Or just use the browser extension which does this for you with a right click on a magnet URL (or any link for that matter).

Install & Use

Server

To install the server, clone this repo, cd in the repo and run:

pip install -e "."

Create a configuration file in /etc/jsondispatch/jsondispatch.conf (by default, --config option lets you setup a custom file location). See 1.1 for example configurations.

To run the server, cd in the repo and run:

python . 

You can change the default port and config file location, give the --help argument for detailed instructions.

Browser extension

For Firefox, go to about:debugging and click on Load Temporary Add-On. Browse to the browserextension/ folder in this repo and select the manifest.json file. Now that the addon is added, go to the addons settings page about:addons and fill-in the server URL.

If you're running the server locally with default port, then the URL is http://127.0.0.1:8850.

For Chrome, go to chrome://extensions/, enable Developer mode, click on Load unpacked extension. Browse to the firefox/ folder in this repo and click on open. Now that the addon is added, click on the addon's option button and fill-in the server URL.

Now you can just right click on a link and go in the submenu Send to Json Dispatch, then choose one of the options which correspond to the configured triggers. Of course, first make sure you installed and started the server as explained in 1.2.1.

Develop

pip install -e ".[dev,test]"

Files Layout

License

The icon was taken from https://feathericons.com/, it's under MIT License.

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Server program that accepts HTTP requests with a JSON payload and forwards the request to another program after transformation.

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