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Meta inquiry middleware for distributed systems

Project description

jomiel

pypi-pyversions pypi-v pypi-wheel pypi-status code-style

jomiel is the meta inquiry middleware for distributed systems. It returns data about content on video-sharing websites (e.g. YouTube). Two technologies form the basis for jomiel:

  • ZeroMQ (also known as ØMQ, 0MQ, or zmq) looks like an embeddable networking library but acts like a concurrency framework

  • Protocol Buffers is a language-neutral, platform-neutral, extensible mechanism for serializing structured data

jomiel is a spiritual successor to (now defunct) libquvi.

Example: jomiel and yomiel working together

Features

  • Language and platform neutral. It communicates using Protocol Buffers and ZeroMQ. There are plenty of client demos. Pick your favorite language.

  • Secure. It can authenticate and encrypt connections using CURVE and SSH.

  • Extensible. It has a plugin architecture.

Getting started

pypi-pyversions

Install from PyPI:

pip install jomiel

Install from the repository, e.g. for development:

git clone https://github.com/guendto/jomiel.git
cd jomiel
pip install -e .  # Install a project in editable mode

Or, if you'd rather not install in "editable mode":

pip install git+https://github.com/guendto/jomiel

Try sending inquiries to jomiel with:

  • the client demos written in different modern programming languages
  • yomiel - the pretty printer for jomiel messages

Be sure to check out:

Usage

usage: jomiel [-h] [--version] [-v] [--config-file FILE] [-D] [-E] [-P]
              [--logger-config FILE] [-L] [--logger-idents-verbose] [-l IDENT]
              [-p] [-m] [--debug-sensitive] [-F] [--http-user-agent STRING]
              [--http-timeout TIME] [--http-debug] [-I] [-r ADDR] [-d ADDR]
              [-w [1-64]] [--curve-enable] [--curve-public-key-dir DIR]
              [--curve-server-key-file FILE] [--curve-domain DOMAIN]
              [--curve-allow ADDR]

optional arguments:
  -h, --help            show this help message and exit
  --version             show program's version number and exit
  -v, --version-long    show version information about program's environment
                        and exit (default: False)
  --config-file FILE    Read configuration from the specified file (default:
                        None)
  -D, --print-config    Show the configuration values and exit (default:
                        False)
  -E, --report-config   Report keys, values and where they were set (default:
                        False)
  -P, --config-paths    Print default configuration file paths (default:
                        False)
  -p, --plugin-list     Display the found plugins and exit (default: False)

logger:
  --logger-config FILE  Logger configuration file to read (default: None)
  -L, --logger-idents   Print logger identities and exit (default: False)
  --logger-idents-verbose
                        Print logger identities in detail, use together with
                        --logger-idents (default: False)
  -l IDENT, --logger-ident IDENT
                        Use the logger identity (default: default)

debug:
  -m, --debug-minify-json
                        Minify JSON messages in the logger (default: False)
  --debug-sensitive     Log sensitive data, e.g. input URIs, serialized
                        messages (default: False)

http:
  -F, --http-allow-redirects
                        Follow HTTP redirections (default: False)
  --http-user-agent STRING
                        Identify as STRING to the HTTP server (default:
                        Mozilla/5.0)
  --http-timeout TIME   Time in seconds allowed for the connection to the HTTP
                        server to take (default: 5)
  --http-debug          Enable verbose HTTP output (default: False)

broker:
  -I, --broker-input-allow-any
                        Disable input URI validation (default: False)
  -r ADDR, --broker-router-endpoint ADDR
                        Bind the frontend (router) socket to the local
                        endpoint [env var: BROKER_ROUTER_ENDPOINT] (default:
                        tcp://*:5514)
  -d ADDR, --broker-dealer-endpoint ADDR
                        Bind the backend (dealer) socket to the local endpoint
                        [env var: BROKER_DEALER_ENDPOINT] (default:
                        inproc://workers)
  -w [1-64], --broker-worker-threads [1-64]
                        Number of worker threads in the pool waiting for
                        client connections (default: 5)

curve:
  --curve-enable        Enable CURVE support (default: False)
  --curve-public-key-dir DIR
                        Directory that holds all public client key files
                        (default: .curve/)
  --curve-server-key-file FILE
                        Secret CURVE key file for the server (default:
                        .curve/server.key_secret)
  --curve-domain DOMAIN
                        Configure CURVE authentication for a given domain
                        (default: *)
  --curve-allow ADDR    Allow (whitelist IP addresses) (default: 127.0.0.1)

 If an arg is specified in more than one place, then commandline values
override environment variables which override defaults.

Website coverage

jomiel --plugin-list  # The current coverage is very limited

See the src/jomiel/plugin/ directory for the existing plugins. The plugin architecture is extensible. When you are contributing new plugins, make sure that the website is not:

  • dedicated to copyright infringement (whether they host the media or only link to it)

  • NSFW

License

jomiel is licensed under the Apache License version 2.0.

Acknowledgements

Project details


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