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This is the Haskell MongoDB driver (client). MongoDB is a free, scalable, fast, document database management system. This driver lets you connect to a MongoDB server, and update and query its data. It also lets you do adminstrative tasks, like create an index or look at performance statistics.

Documentation

• Quick example
• Tutorial
• Driver API
• MapReduce example
• Driver design
• MongoDB DBMS

Dev Environment

It's important for this library to be tested with various versions of mongodb server and with different ghc versions. In order to achieve this we use docker containers and docker-compose. This repository contains two files: docker-compose.yml and reattach.sh.

Docker compose file describes two containers.

One container is for running mongodb server. If you want a different version of mongodb server you need to change the tag of mongo image in the docker-compose.yml. In order to start your mongodb server you need to run:

docker-compose up -d mongodb

In order to stop your containers without loosing the data inside of it:

docker-compose stop mongodb

Restart:

docker-compose start mongodb

If you want to remove the mongodb container and start from scratch then:

docker-compose stop mongodb
docker-compose rm mongodb
docker-compose up -d mongodb

The other container is for compiling your code. By specifying the tag of the image you can change the version of ghc you will be using. If you never started this container then you need:

docker-compose run mongodb-haskell

It will start the container and mount your working directory to /opt/mongodb-haskell If you exit the bash cli then the conainer will stop. In order to reattach to an old stopped container you need to run script reattach.sh. If you run docker-compose run again it will create another container and all work made by cabal will be lost. reattach.sh is a workaround for docker-compose's inability to pick up containers that exited.

When you are done with testing you need to run:

docker-compose stop mongodb

Next time you will need to do:

docker-compose start mongodb
reattach.sh

It will start your stopped container with mongodb server and pick up the stopped container with haskell.