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Build tle-storage-service
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TLEStorageService


Small aiohttp server application for TLE storage

Requirements

  • aio-nasa-tle-loader >= 1.0.0
  • aio-space-track-api >= 2.1.1
  • aiohttp >= 2.1.0
  • aiopg >= 0.13.0
  • alembic >= 0.9.2
  • pyaml >=16.12.2
  • sqlalchemy >= 1.1.10
  • ujson >= 1.35

Installing


::

pip install tle-storage-service

Getting started

Start aiohttp application:

.. code-block:: python

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
import logging
import os

from aiohttp import web

from tle_storage_service import TleStorageService, load_cfg, LOG_FORMAT

DIR = os.path.abspath(os.path.dirname(__file__))


if __name__ == '__main__':
    logging.basicConfig(level=logging.INFO, format=LOG_FORMAT)
    app = TleStorageService(config=load_cfg(path=os.path.join(DIR, 'config', 'server.yaml')))
    web.run_app(app, port=8080)

Create periodic script for refresh db

.. code-block:: python

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
import asyncio
import logging
import os

from aio_nasa_tle_loader import AsyncNasaTLELoader
from aio_space_track_api import AsyncSpaceTrackApi
from aiopg.sa import create_engine

from tle_storage_service import periodic_task, load_cfg, nasa, space_track, LOG_FORMAT

DIR = os.path.abspath(os.path.dirname(__file__))
CFG = load_cfg(path=os.path.join(DIR, 'config', 'periodic.yaml'))

logger = logging.getLogger(__name__)


@periodic_task(CFG['sync'].get('space-track', 4) * 3600)
async def call_space_track(engine, api_params, satellites, loop):
    async with AsyncSpaceTrackApi(loop=loop, **api_params) as api:
        await space_track(engine, api, satellites)


@periodic_task(CFG['sync'].get('nasa', 0.5) * 3600)
async def call_nasa(engine, loop):
    async with AsyncNasaTLELoader(loop=loop) as loader:
        await nasa(engine, loader)


async def run(db_params, api_params, satellites, loop):
    async with create_engine(loop=loop, **db_params) as engine:
        await asyncio.gather(
            call_nasa(engine, loop),
            call_space_track(engine, api_params, satellites, loop),
            loop=loop
        )


def notify_callback(msg):
    logger.info('[%s] Receive msg <- "%s"', msg.channel, msg.payload)


if __name__ == '__main__':

    logging.basicConfig(format=LOG_FORMAT, level=logging.DEBUG)

    loop = asyncio.get_event_loop()
    loop.create_task(run(CFG['db'],
                         CFG['space-track'],
                         CFG['sync']['satellites'],
                         loop))

    try:
        loop.run_forever()
    finally:
        loop.close()

More code examples into examples directory

Source code

The latest developer version is available in a github repository:
https://github.com/nkoshell/tle-storage-service

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nkoshell
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