AWS CDK constructs
Project description
Start here
FAO AWS CDK is library to build FAO-compliant AWS infrastructure in near-zero time-to-market.
CSI Cloud Team developed a set of highly reusable AWS infrastructural building-blocks in collaboration with the Unix Admin Team and Statistical Working System (SWS) development team.
To adopt FAO AWS CDK enhances the projects' robustness over the time as they will inherit the benefits of a centralized infrastructural development, they can keep the focus on application features development.
These shared infrastructural building-blocks natively implement FAO AWS best practices and abstract low-level technical details, while enabling AWS developers to focus on code production.
As a major positive side effect, the overal sustainability of the FAO AWS cloud environment reaches the stars 🚀.
Prerequisites
Make sure your local machine is configured to meet the FAO AWS prerequisites Before to proceed, make sure you have a general undestanding of what AWS CDK is and how to use it.
Tutorials
CSI Cloud Team produced a number of tutorials about FAO AWS CDK (and FAO AWS in general). This is the link to the video tutorials.
Getting started
Local project initialization
- Request a Bitbucket.org repo and clone it locally (the repository name should contain
-iac
postfix) - Initialize CDK project with
cdk init sample-app --language python
command - Follow the auto-generated instructions to enable the Python Virtual env contained in the README file. The virtual env mustn't be called
.env
. In case the auto-generation of the python env generates a.env
virtual env, re-create it following the instructions in theREADME.md
with a different name - Activate the python virtual env following the README file
- Install the project dependencies following the README file
- Test that everything is working with the command
cdk synth
Let's start coding
- Install the AWS CDK constucts as project dependencies
pip install aws_cdk_constructs
- Install any other python dependency (e.g.
python-dotenv
) - Create the .env.example and three
.env.<ENV>-iac
(with<ENV>
as one of the valuedevelopment
,qa
,production
, e.g..env.development-iac
) according to AWS standard (you can extend the set of variables as you like) - Configure the
.env.<ENV>-iac
files according to application needs
Let's configure CD/CI
- Create the CDK service user from AWS CDK consturct
- Deploy the infrastructure using CDK
- Retrieve the newly created User credentials from
AWS console
>IAM
>Users
> select your user >Security Credentials
tab > createAccess Keys
- Configure the
AWS_ACCESS_KEY_ID
,AWS_SECRET_ACCESS_KEY
,ENVIRONMENT
bitbucket pipeline environment variables or request support in case you do not have enough permissions - Create and develop the
bitbucket-pipeline.yml
file - On push, the pipeline will run automatically
Bootstrap you project
Your project is set up like a standard Python project. The initialization process should also creates
a virtualenv within this project, stored under the .venv directory. To create the virtualenv
it assumes that there is a python3
executable in your path with access to the venv
package.
If for any reason the automatic creation of the virtualenv fails, you can create the virtualenv
manually once the init process completes.
To manually create a virtualenv on MacOS and Linux:
$ python3 -m venv venv
After the init process completes and the virtualenv is created, you can use the following step to activate your virtualenv.
$ source venv/bin/activate
If you are a Windows platform, you would activate the virtualenv like this:
% venv\Scripts\activate.bat
Once the virtualenv is activated, you can install the required dependencies.
$ pip install -r requirements.txt
At this point you can now synthesize the CloudFormation template for this code.
$ ENVIRONMENT=<ENV> cdk synth
You can now begin exploring the source code, contained in the hello directory. There is also a very trivial test included that can be run like this:
$ pytest
To add additional dependencies, for example other CDK libraries, just add to
your requirements.txt file and rerun the pip install -r requirements.txt
command.
Useful commands
<ENV>
possible values: development
, qa
, production
.
Kindly note, that the correspondent .env.<ENV>-iac
file must exist to run a given command. For more information please refer to How to configure your FAO CDK stack
ENVIRONMENT=<ENV> cdk ls
list all stacks in the appENVIRONMENT=<ENV> cdk synth
emits the synthesized CloudFormation templateENVIRONMENT=<ENV> cdk deploy
deploy this stack to your default AWS account/regionENVIRONMENT=<ENV> cdk diff
compare deployed stack with current stateENVIRONMENT=<ENV> cdk docs
open CDK documentationENVIRONMENT=<ENV> cdk ls
: to list the available stacks in the projectsENVIRONMENT=<ENV> cdk synth MY_STACK --profile my-dev
: to synthetize (generate) the cloud formation template of MY_STACK stackENVIRONMENT=<ENV> cdk deploy MY_STACK --profile my-dev
: to deploy the the MY_STACK stack
How to generate the AWS CDK costructs documention
The documentation follows Google format.
- Browse the
./docs
directory - Run the
make html
to generate the static HTML documentation in the/docs/_build/
directory
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