MetaSim - Umbrella project for the Travel Market Simulator (TvlSim / AirSim)

This project proposes development helpers for the simulator components.

The metasim project itself is an umbrella, allowing to drive all the other components from a central local directory, namely workspace/. One can then interact with any specific component directly by jumping (cd-ing) into the corresponding directory. Software code may be edited and committed directly from that component sub-directory.

Docker images, hosted on Docker Cloud, are provided for convenience reason, avoiding the need to set up a proper development environment: they provide a ready-to-use, ready-to-develop, ready-to-contribute environment. Enjoy!

References

• Travel/Airline Market Simulator (TvlSim / AirSim):
  • Source code on GitHub: https://github.com/airsim
  • Docker Cloud repository: https://hub.docker.com/r/infrahelpers/tvlsim/
  • Official Web site: https://travel-sim.org

Run the Docker image

• As a quick starter, some test cases can be launched from one of Docker images (e.g., CentOS, Ubuntu, Debian or MacOS):

$ docker run --rm -it infrahelpers/tvlsim:centos bash
[build@c..5 metasim]$ cd workspace/build/tvlsim
[build@c..5 tvlsim (master)]$ make check
[build@c..5 tvlsim (master)]$ exit

Meta-build

The Docker images come with all the dependencies already installed. If there is a need, however, for some more customization (for instance, install some other software products such as Kafka or ElasticSearch), this section describes how to get the end-to-end travel market simulator up and running on a native environment (as opposed to within a Docker container).

An alternative is to develop your own Docker image from the ones provided by that project. You would typically start the Dockerfile with FROM infrahelpers/tvlsim:<linux-distribution>.

Installation of dependencies (if not using the Docker image)

C++, Python and Ruby are needed in order to build and run the various components of that project.

Docker images

The maintained Docker images for that project come with all the necessary pieces of software. They can either be used as is, or used as inspiration for ad hoc setup on other configurations.

Native environment (outside of Docker)

CentOS/RedHat

• Install EPEL for CentOS/RedHat:

$ sudo rpm --import https://www.centos.org/keys/RPM-GPG-KEY-CentOS-Official && \
  sudo rpm --import https://www.centos.org/keys/RPM-GPG-KEY-CentOS-Testing
$ sudo yum -y install epel-release

• Add the repository for CodeReady Linux Builder (CRB)

$ sudo dnf -y install 'dnf-command(config-manager)'
$ sudo dnf config-manager --set-enabled crb

• Add EPEL support

$ sudo dnf -y install https://dl.fedoraproject.org/pub/epel/epel-release-latest-9.noarch.rpm

• Install a few packages:

$ sudo dnf -y install less htop net-tools which sudo man vim \
        git-all wget curl file bash-completion keyutils Lmod \
        xz-devel zlib-devel bzip2-devel gzip tar rpmconf yum-utils \
        gcc gcc-c++ cmake m4 \
	lcov cppunit-devel \
        zeromq-devel czmq-devel cppzmq-devel \
        boost-devel xapian-core-devel openssl-devel libffi-devel \
        mpich-devel openmpi-devel \
        readline-devel sqlite-devel mariadb-devel \
        soci-mysql-devel soci-sqlite3-devel \
        libicu-devel protobuf-devel protobuf-compiler \
        python-devel \
        python3-mod_wsgi \
        geos-devel geos-python \
        doxygen ghostscript "tex(latex)" texlive-epstopdf-bin \
	rake rubygem-rake ruby-libs

MacOS

• Install Homebrew, if not already done:

$ ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"

• SOCI. When SOCI has to be built from the sources, the following shows how to do that:

$ mkdir -p ~/dev/infra/soci && cd ~/dev/infra/soci
$ git clone https://github.com/SOCI/soci.git
$ cd soci
$ mkdir build && cd build
$ cmake -DSOCI_TESTS=OFF ..
$ make
$ sudo make install

• C++, Python and Ruby:

$ brew install boost boost-python boost-python3 cmake libedit \
  sqlite mysql icu4c protobuf protobuf-c zeromq doxygen
$ wget https://raw.githubusercontent.com/zeromq/cppzmq/master/zmq.hpp -O /usr/local/include/zmq.hpp
$ brew install readline homebrew/portable-ruby/portable-readline
$ brew install pyenv
$ brew install rbenv ruby-build

All

• Install Python [Pyenv] and pipenv:

$ git clone https://github.com/pyenv/pyenv.git ${HOME}/.pyenv
$ cat >> ~/.bashrc << _EOF

# Python pyenv
export PYENV_ROOT="\${HOME}/.pyenv"
export PATH="\${PYENV_ROOT}/bin:\${PATH}"

if command -v pyenv 1>/dev/null 2>&1; then
    eval "\$(pyenv init -)"
fi
_EOF
$ source ${HOME}/.bashrc && pyenv install 3.10.9 && \
  pyenv global 3.10.9
$ python -mpip install -U pip
$ python -mpip install -U pipenv scikit-build build wheel setuptools pytest twine

Clone the Git repository

The following operation needs to be done only on a native environment (as opposed to within a Docker container). The Docker image indeed comes with that Git repository already cloned and built. In the following, <linux-distrib> may be one of centos, ubuntu, debian or macos.

$ mkdir -p ~/dev/sim && cd ~/dev/sim
$ git clone https://github.com/airsim/metasim.git
$ cd metasim
$ cp docker/<linux-distrib>/resources/metasim.yaml.sample metasim.yaml
$ rake clone
$ rake checkout
$ rake offline=true info

Interactive build with rake

That operation may be done either from within the Docker container, or in a native environment (on which the dependencies have been installed).

As a reminder, to enter into the container, just type docker run --rm -it infrahelpers/metasim:<linux-distrib> bash, and exit to leave it (<linux-distrib> may be one of centos, ubuntu, debian or even macos).

The following sequence of commands describes how to build, test and deliver the artifacts of all the components, so that a full simulation may be performed:

$ cd ~/dev/sim/metasim
$ rm -rf workspace/build workspace/install
$ rake offline=true configure
$ rake offline=true install
$ rake offline=true check
$ rake offline=true dist

Interacting with a specific project

Those operations may be done either from within the Docker container, or in a native environment (on which the dependencies have been installed).

As a reminder, to enter into the container, just type docker run --rm -it infrahelpers/metasim:<linux-distrib> bash, and exit to leave it (<linux-distrib> may be one of centos, ubuntu, debian or even macos).

$ cd ~/dev/sim/metasim
$ cd workspace/src/airinv
$ vi airinv/bom/LegCabinStruct.cpp
$ git add airinv/bom/LegCabinStruct.cpp
$ cd ../../build/airinv
$ make check && make install
$ # If all goes well at the component level, re-build the full simulator
$ cd ~/dev/sim/metasim
$ rake offline=true test
$ # If all goes well at the integration level
$ cd workspace/src/airinv
$ git commit -m "[Dev] Fixed issue #76: C++-20 compatibility"
$ cd -

Batched build and Docker image generation

If the Docker images need to be re-built, the following commands explain how to do it:

$ mkdir -p ~/dev/sim && cd ~/dev/sim
$ git clone https://github.com/airsim/metasim.git
$ cd metasim
$ docker build -t infrahelpers/metasim:centos --squash docker/centos/
$ docker push infrahelpers/metasim:centos
$ docker build -t infrahelpers/metasim:debian --squash docker/debian/
$ docker push infrahelpers/metasim:debian
$ docker build -t infrahelpers/metasim:ubuntu --squash docker/ubuntu/
$ docker push infrahelpers/metasim:ubuntu
$ docker build -t infrahelpers/metasim:macos --squash docker/macos/
$ docker push infrahelpers/metasim:macos
$ docker images | grep "^bom4v"
REPOSITORY            TAG     IMAGE ID      CREATED             SIZE
infrahelpers/metasim  centos  9a33eee22a3d  About an hour ago   2.16GB
infrahelpers/metasim  debian  c5f1ea63a79b  2 hours ago         1.95GB
infrahelpers/metasim  ubuntu  d5f1ea63a79c  2 hours ago         2.66GB