How to use MongoDB on travis-ci

Using continuous integration for rainbrurph, I need the mongodb database and C libraries. Unfortunately, I had issue using it on Ubuntu Precise 12.04 LTS, the distribution used on travis-ci.

To make it work, we'll have to :

1. install database components from the official MongoDB repositories;
2. manually build the latest release of the official C libraries;
3. add /usr/local/ to ld.conf to make your build system discover the newly installed library.

Note: I use the \ character to split long lines here, please concatenate splitted lines.

Install the database

We have to install the official package from the mongodb.org servers :

sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 \
  --recv EA312927
echo "deb http://repo.mongodb.org/apt/ubuntu precise/mongodb-org/3.2 \
  multiverse" | sudo tee /etc/apt/sources.list.d/mongodb-org-3.2.list
sudo apt-get update
sudo apt-get install -y mongodb-org

Build the driver library

To be able to use mongodb in C programming language, we need a C library. We'll use the 1.4.0 version :

git clone https://github.com/mongodb/mongo-c-driver.git
cd mongo-c-driver
git checkout 1.4.0
./autogen.sh
make
sudo make install

Handle ld.conf

And to handle mongodb library linking, we must update ldconfig:

grep local /etc/ld.so.conf || (sudo echo "/usr/local/lib" >> \
  /etc/ld.so.conf && sudo ldconfig)

Conclusion

Finally, here is the .travis.yml file:

sudo: required
os:
- linux
branches:
  only:
    - master
    - mongodb-script


before_install: ./CI/before_install.sh

The CI/before_install.sh file will look like this:

#!/bin/sh

# Install the mongodb components and the C client library

## Install the mongo Database
sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 \
  --recv EA312927
echo "deb http://repo.mongodb.org/apt/ubuntu precise/mongodb-org/3.2 \
  multiverse" | sudo tee /etc/apt/sources.list.d/mongodb-org-3.2.list
sudo apt-get update
sudo apt-get install -y mongodb-org

## Install the C library
git clone https://github.com/mongodb/mongo-c-driver.git
cd mongo-c-driver
git checkout 1.4.0
./autogen.sh
make
sudo make install

## Handle linking from /usr/local
sudo echo "/usr/local/lib" > /etc/ld.so.conf.d/mongodb.conf
sudo ldconfig