Syene is a geo location service that can map an IP address to a location.
gem install bundler
- Install
libgeoip(brew install geoip,apt-get install libgeoip-dev, or see http://www.maxmind.com/app/c) bundle installrake specrake update:geoip- Make sure MongoDB is running
rake update
There are three interfaces to the service: a command line interface, and AMQP worker and a REST server.
Make sure that MongoDB is running before using any of the interfaces.
To look up an IP from the command line use the lookup command. It will look up all IP numbers passed as arguments, or if no arguments are given (or the first argument is -) it will read from STDIN (each IP should be on a separate line).
lookup 8.8.8.8 7.7.7.7 6.6.6.6
echo 8.8.8.8 | lookup
cat lots_of_ips | lookup -
The worker command starts a worker node that listens for messages on the burt.syene exchange. The routing key should be an empty string, and each message must set a header called "reply_key" to the routing key where it's listening for a reply. The reply will have a header called "query" that contains the original message. See bin/client for an example of how to communicate with the worker.
If you start multiple instances of worker the queries will be distributed between them by the AMQP broker.
You can use the client command similarly to the CLI interface:
client 8.8.8.8 7.7.7.7 6.6.6.6
echo 8.8.8.8 | client
cat lots_of_ips | client -
Make sure that RabbitMQ, or a compatible AMQP broker, is running before running worker. There is currently no way to specify the host and port of the broker, localhost and the default port is assumed.
The server command starts up a REST server that can be used similarly to the CLI and AMQP interfaces. server uses rackup to start the server, so by default it will run in WEBrick on port 9292. You can pass any rackup options to the server command, so if you want to run it with Thin on port 1337 run
server --server thin --port 1337
To look up an IP address you can access /cities and pass the IP address as a parameter:
curl 'http://localhost:9292/cities?ip=8.8.8.8'
The result is always JSON.
The server logs can be found in tmp/logs/production.log.
Syene was the city in Greek Egypt where Eratosthenes measured the circumference of the Earth.