Web frontend for wego
Shell Python Other
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README.md

This is a web frontend for a console weather application wego, using it as a backend. You can check it at wttr.in.

Usage

You can access the service from a shell or from a Web browser:

$ curl wttr.in
Weather for City: Paris, France

     \   /     Clear
      .-.      10 – 11 °C     
   ― (   ) ―   ↑ 11 km/h      
      `-’      10 km          
     /   \     0.0 mm         

You can specify the location, for that you want to get the weather information. If you omit the location name, you will get the information for you current location, based on your IP address.

$ curl wttr.in/London
$ curl wttr.in/Moscow

You can use 3-letters airport codes if you want to get the weather information about some airports:

$ curl wttr.in/muc      # Weather for IATA: muc, Munich International Airport, Germany
$ curl wttr.in/ham      # Weather for IATA: ham, Hamburg Airport, Germany

You can also use IP-addresses (direct) or domain names (prefixed with @) as a location specificator:

$ curl wttr.in/@github.com
$ curl wttr.in/@msu.ru

To get this information online, you can access the :help page:

$ curl wttr.in/:help

Installation

To install the program you need:

  1. Install external dependencies
  2. Install python dependencies used by the service
  3. Get WorldWeatherOnline API Key
  4. Configure wego
  5. Configure wttr.in
  6. Configure HTTP-frontend service

Install external dependencies

External requirements:

To install wego you must have golang installed. After that:

go get https://github.com/schachmat/wego
go install https://github.com/schachmat/wego

Install python dependencies

Python requirements:

  • Flask
  • geoip2
  • geopy
  • requests
  • gevent

You can install them using pip.

If virtualenv is used:

virtualenv ve
ve/bin/pip install -r requirements.txt
ve/bin/pip bin/srv.py

Also, you need to install the geoip2 database. You can use a free database GeoLite2, that can be downloaded from http://dev.maxmind.com/geoip/geoip2/geolite2/

Get WorldWeatherOnline key

To get the WorldWeatherOnline API key, you must register here:

https://developer.worldweatheronline.com/auth/register

Configure wego

After you have the key, configure wego:

$ cat ~/.wegorc 
{
    "APIKey": "00XXXXXXXXXXXXXXXXXXXXXXXXXXX",
    "City": "London",
    "Numdays": 3,
    "Imperial": false,
    "Lang": "en"
}

The City parameter in ~/.wegorc is ignored.

Configure wttr.in

Configure the following environment variables specifing the path to the local wttr.in installation, to the GeoLite database and to the wego installation. For example:

WTTR_MYDIR = "/home/igor/wttr.in"
WTTR_GEOLITE = "/home/igor/wttr.in/GeoLite2-City.mmdb"
WTTR_WEGO = "/home/igor/go/bin/wego"

Configure HTTP-frontend service

Configure the web server, that will be used to access the service (if you want to use a web frontend; it's recommended):

server {
    listen [::]:80;
    server_name  wttr.in *.wttr.in;
    access_log  /var/log/nginx/wttr.in-access.log  main;
    error_log  /var/log/nginx/wttr.in-error.log;

    location /clouds_files { root /var/www/igor/; }
    location /clouds_images { root /var/www/igor/; }

    location / {
        proxy_pass         http://127.0.0.1:8002;

        proxy_set_header   Host             $host;
        proxy_set_header   X-Real-IP        $remote_addr;
        proxy_set_header   X-Forwarded-For  $remote_addr;

        client_max_body_size       10m;
        client_body_buffer_size    128k;

        proxy_connect_timeout      90;
        proxy_send_timeout         90;
        proxy_read_timeout         90;

        proxy_buffer_size          4k;
        proxy_buffers              4 32k;
        proxy_busy_buffers_size    64k;
        proxy_temp_file_write_size 64k;

        expires                    off;
    }
}