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tf-dev-env: Tungsten Fabric Developer Environment

tf-dev-env is a tool which allows building, unit-testing and linting TF Everything is done inside a container which is controller by run.sh script with its parameters

Hardware and software requirements

Minimal:

• instance with 2 virtual CPU, 8 GB of RAM and 64 GB of disk space

Recommended:

• instance with 4+ virtual CPU, 16+ GB of RAM and 64 GB of disk space

• Ubuntu 18.04

• CentOS 7.x

• MacOS (Experimental support, please ensure that you have brew and coreutils installed)

Quick start

1. Preparation part

Enable passwordless sudo for your user (for centos example: serverfault page)

Install git:

sudo yum install -y git

For MacOS only:

The script will install a limited number of dependencies using brew (python, docker, lsof). The coreutils packages is needed by the script itself.

For Docker, the community edition will be installed if any other version already present. Please ensure that you have started Docker Desktop (Docker.app) application.

brew install git
brew install coreutils

Create a WORKSPACE directory (build artifacts will be put there) and export WORKSPACE=myworkspacedir if you want to have specific workspace different from your current directory used by default.

2. Download tf-dev-env and fetch sources

git clone http://github.com/tungstenfabric/tf-dev-env

Prepare the build container and fetch TF sources:

tf-dev-env/run.sh

Note: The sources are fetched into the directory $WORKSPACE/contrail. The repo tool is used for fetching. The directory structure corresponds to default.xml

3. Make changes (if any needed)

Make required changes in sources fetched to contrail directory. For example, fetch particular review for controller (you can find download link in the gerrit review):

cd contrail/controller
git fetch "https://gerrit.tungsten.io/tungstenfabric/tf-controller" refs/changes/..... && git checkout FETCH_HEAD
cd ../../

3. Build

Run the build

tf-dev-env/run.sh build

3. Unit-test

Run the unit-testing

tf-dev-env/run.sh test

This command can be parameterized

tf-dev-env/run.sh test TARGET

TARGET can be:

• ui. WebUI unit tests will be run.
• tox. tox will be run for project $GERRIT_PROJECT. Specific tox target like pep8 can be run with placing target's name into file tf-dev-env/input/target_set
• any test name from Scons (example can be found in file ci_unittests.json of tf-controller repository)
• without any arguments default set of Scons UT will be run (please refer to default section of ci_unittests.json)

To skip some tests, you have to create a tf-dev-env/skip_tests file listing such tests. Example file:

test_query_security_group_with_one_tag
test_connection_status
test_uuid_in_duplicate_name
test_query_all_floating_ip_with_match_any

Note, that skipping tests doesn't work for src/contrail-analytics/contrail-broadview:test, src/contrail-analytics/contrail-snmp-collector:test and src/contrail-analytics/contrail-topology:test targets.

Targets

Various optional targets can be given as parameters to run.sh command. There are simple or complex ones.

For example, The target 'build' is a sequence of fetch, configure, compile and package targets. Each target is executed once and would be skipped on next runs of the build target. Any target can be run again explicitely if needed like:

./run.sh compile
./run.sh package

Supported targets:

• fetch - sync TF git repos
• configure - fetch third party packages and install dependencies
• compile - build TF binaries (RPM-s)
• package - package TF into docker containers
• test - run unittests

Advanced usage

It is possible to use more finegraned build process via running make tool for building artifacts manually. Note: the described way below uses internal commands and might be changed in future.

1. Prepare developer-sandbox container and dont run any targets

./run.sh none

2. Attach to developer-sandbox container

sudo docker exec -it tf-dev-sandbox bash

3. Prepare developer-sandbox container

cd ~/tf-dev-env
make sync              # get latest code
make setup dep         # set up docker container and install build dependencies
make fetch_packages    # pull third_party dependencies

The descriptions of targets:

• make sync - sync code in ./contrail directory using repo tool
• make fetch_packages - pull ./third_party dependencies (after code checkout)
• make setup - initial configuration of image (required to run once)
• make dep - installs all build dependencies
• make dep-<pkg_name> - installs build dependencies for <pkg_name>

4. Building artifacts

RPM packages

• make list - lists all available RPM targets
• make rpm - builds all RPMs
• make rpm-<pkg_name> - builds single RPM for <pkg_name>

Before containers build

• make create-repo - creates repository with built RPMs
• make update-repo - updates repository with built RPMs (in case when some RPM-s were rebuilt)
• make setup-httpd - configures httpd for building images (can be run once after RPM's repository creation)

Container images

• make list-containers - lists all container targets
• make containers - builds all containers' images, requires RPM packages in ~/contrail/RPMS and configured httpd
• make container-<container_name> - builds single container as a target, with all docker dependencies

Deployers

• make list-deployers - lists all deployers container targets
• make deployers - builds all deployers
• make deployer-<container_name> - builds single deployer as a target, with all docker dependencies

Test containers

• make test-containers - build test containers

TF Operator containers

• make operator-containers - build tf-operator container

Source containers

• make src-containers - build containers with source of deployer code

Clean

• make clean{-containers,-deployers,-repo,-rpm} - delete artefacts

Alternate build methods

Instead of step 4 above (which runs scons inside make), you can use scons directly. The steps 1-3 are still required.

cd ~/contrail
scons # ( or "scons test" etc)

NOTE: Above example build whole TungstenFabric project with default kernel headers and those are headers for running kernel (uname -r). If you want to customize your manual build and use i.e newer kernel header take a look at below examples.

In case you want to compile TungstenFabric with latest or another custom kernel headers installed in tf-dev-sandbox container, then you have to run scons with extra arguments:

RTE_KERNELDIR=/path/to/custom_kernel_headers scons --kernel-dir=/path/to/custom_kernel_headers

To alter default behaviour and build TF without support for DPDK just provide the --without-dpdk flag:

scons --kernel-dir=/path/to/custom_kernel_headers --without-dpdk

To build only specific module like i.e vrouter:

scons --kernel-dir=/path/to/custom_kernel_headers vrouter

To build and run unit test against your code:

RTE_KERNELDIR=/path/to/custom_kernel_headers scons --kernel-dir=/path/to/custom_kernel_headers test

Customizing dev-env container

There are several options to change standard behaviour of tf-dev-sandbox container:

• Attach external sources to container
• Use external docker registry to store TF container images
• Building kernel module files for current kernel versio

External sources

You can attach you host tf-vnc sources instead of syncing them from github.com.

There are special environment variables to set correct behaviour:

• CONTRAIL_DIR stores host's path to initialized tf-vnc repository.
• SITE_MIRROR stores contrail third-party repository url. It used to collect external packages required by contrail-third-party tools. There is an example:

export CONTRAIL_DIR=$HOME/my-tf-sources
./run.sh configure
./run.sh compile
./run.sh package

External docker registry

Environment variable CONTAINER_REGISTRY stores external docker registry connection information where TF's containers would be stored. There is an example:

export CONTRAIL_DEPLOY_REGISTRY=0
export CONTAINER_REGISTRY=10.1.1.190:5000
./run.sh build

Building kernel module files for current kernel version

You can find default kernel versions in tf-packages repository in kernel_version.info, kernel_version.rhel.info and kernel_version.ubi.info files. So, if you want to use different kernel version, you must add it into the corresponding file.

For example, if you need to build kernel modules for CentOS with kernel version 3.10.0-1127.13.1.el7.x86_64, you can do:

./tf-dev-env/run.sh fetch
echo "3.10.0-1127.13.1.el7.x86_64" >> contrail/tools/packages/kernel_version.info
./tf-dev-env/run.sh build

Full TF dev suite

IMPORTANT: some of the parts and pieces are still under construction

Full TF dev suite consists of:

• tf-dev-env - develop and build TF
• tf-devstack - deploy TF
• tf-dev-test - test deployed TF

Each of these tools can be used separately or in conjunction with the other two. They are supposed to be invoked in the sequence they were listed and produce environment (conf files and variables) seamlessly consumable by the next tool.

They provide two main scripts:

• run.sh
• cleanup.sh

Both these scripts accept targets (like run.sh build) for various actions.

Typical scenarios are (examples are given for centos):

Developer's scenario

Typical developer's scenario could look like this:

1. Preparation part

Run a machine, for example AWS instance or a VirtualBox (powerful with lots of memory - 16GB+ recommended- )

Enable passwordless sudo for your user (for centos example: serverfault page)

Install git:

sudo yum install -y git

2. tf-dev-env part

Clone tf-dev-env:

git clone http://github.com/tungstenfabric/tf-dev-env

Switch to a branch other than master (if necessary):

export GERRIT_BRANCH="branch_name"

Prepare the build container and fetch TF sources:

tf-dev-env/run.sh

Make required changes in sources fetched to contrail directory. For example, fetch particular review for controller (you can find download link in the gerrit review):

cd contrail/controller
git fetch "https://gerrit.tungsten.io/tungstenfabric/tf-controller" refs/changes/..... && git checkout FETCH_HEAD
cd ../../

Run TF build:

tf-dev-env/run.sh build

3. tf-devstack part

Clone tf-devstack:

git clone http://github.com/tungstenfabric/tf-devstack

Deploy TF by means of k8s manifests, for example:

tf-devstack/k8s_manifests/run.sh

3.1 Using targets

If you're on VirtualBox, for example, and want to snapshot k8s deployment prior to TF deployment you can use run.sh targets like:

tf-devstack/k8s_manifests/run.sh platform

and then:

tf-devstack/k8s_manifests/run.sh tf

Along with cleanup of particular target you can do tf deployment multiple times:

tf-devstack/k8s_manifests/cleanup.sh tf

4. tf-dev-test part

Clone tf-dev-test:

git clone http://github.com/tungstenfabric/tf-dev-test

Test the deployment by smoke tests, for example:

tf-dev-test/smoke/run.sh

Evaluation scenario

Typical developer's scenario could look like this:

1. Preparation part

Run a machine, for example AWS instance or a VirtualBox (powerful with lots of memory - 16GB+ recommended- )

Enable passwordless sudo for your user (for centos example: serverfault page)

Install git:

sudo yum install -y git

2. tf-devstack part

Clone tf-devstack:

git clone http://github.com/tungstenfabric/tf-devstack

Deploy TF by means of k8s manifests, for example:

tf-devstack/k8s_manifests/run.sh

Or if you want to deploy with the most recent sources from master use:

tf-devstack/k8s_manifests/run.sh master

Notes

• Vagrantfile is deprecated and is not supported. Will be removed later.