dda-devops-build/README.md

# dda-devops-build

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![release prod](https://github.com/DomainDrivenArchitecture/dda-devops-build/workflows/release%20prod/badge.svg)

dda-devops-build integrates all the tools we use to work with clouds & provide some nice functions around.

Tools we support are

* terraform: for setting up the plain infrastructure around.
* docker: for creating images
* c4k: for generating kubernetes manifests
* provs: for setting up small single-node k3s clusters
* gopass: for credential management on devops computers
* cloud providers: hetzner, digitalocean, aws

In addition we provide a ReleaseMixin for release related tasks like tag / publish & version-bump

```mermaid
classDiagram
    class DevopsBuild {
        name()
        build_path()
        initialize_build_dir()
    }


    class DevopsTerraformBuild {
        terraform_build_commons_path()
        project_vars()
        initialize_build_dir()
        post_build()
        read_output_json()
        plan()
        plan_fail_on_diff()
        apply(auto_approve=False)
        refresh()
        destroy(auto_approve=False)
        tf_import(tf_import_name, tf_import_resource,)
        print_terraform_command(terraform)
    }

    class DevopsImageBuild {
        def initialize_build_dir()
        image()
        drun()
        dockerhub_login()
        dockerhub_publish()
        test()
    }

    class ReleaseMixin {
        prepare_release()
        tag_and_push_release()
    }
    
    class ProvsK3sBuild {
        def update_runtime_config(dns_record)
        write_provs_config()
        provs_apply(dry_run=False)
    }

    class C4kBuild {
        def update_runtime_config(dns_record)
        def write_c4k_config()
        def write_c4k_auth()
        c4k_apply(dry_run=False)
    }

    DevopsBuild <|-- DevopsImageBuild
    DevopsBuild <|-- DevopsTerraformBuild
    DevopsBuild <|-- ReleaseMixin
    DevopsBuild <|-- ProvsK3sBuild
    DevopsBuild <|-- C4kBuild

    link DevopsBuild "./doc/DevopsBuild.md"

```

Principles we follow are:

* Seperate build artefacts from version controlled code
* Domain Driven Design - in order to stay sustainable

## Installation

Ensure that yout python3 version is at least Python 3.10

```
sudo apt install python3-pip
pip3 install -r requirements.txt
export PATH=$PATH:~/.local/bin
```

## Reference

* [DevopsBuild](./doc/DevopsBuild.md)



## Example Build

lets assume the following project structure

```
my-project
   | -> my-module
   |       | -> build.py
   |       | -> some-terraform.tf
   | -> an-other-module
   | -> target  (here will the build happen)
   |       | -> ...
```

```python
from pybuilder.core import task, init
from ddadevops import *

name = 'my-project'
MODULE = 'my-module'
PROJECT_ROOT_PATH = '..'


@init
def initialize(project):
    project.build_depends_on("ddadevops>=4.0.0-dev")

    config = {
        "credentials_mapping": [
            {
                "gopass_path": environ.get("DIGITALOCEAN_TOKEN_KEY_PATH", None),
                "name": "do_api_key",
            },
            {
                "gopass_path": environ.get("HETZNER_API_KEY_PATH", None),
                "name": "hetzner_api_key",
            },
        ],
        "name": name,
        "module": MODULE,
        "stage": environ["STAGE"],
        "project_root_path": PROJECT_ROOT_PATH,
        "build_types": ["TERRAFORM"],
        "mixin_types": [],
        "tf_provider_types": ["DIGITALOCEAN", "HETZNER"],
        "tf_use_workspace": False,
        "tf_terraform_semantic_version": "1.4.2",
        "do_as_backend": True,
        "do_bucket": "your-bucket",
    }

    build = DevopsTerraformBuild(project, config)
    build.initialize_build_dir()


@task
def plan(project):
    build = get_devops_build(project)
    build.plan()


@task
def apply(project):
    build = get_devops_build(project)
    build.apply(True)


@task
def destroy(project):
    build = get_devops_build(project)
    build.destroy(True)

```

## Release

```
adjust version no in build.py to release version no.
git commit -am "release"
git tag -am "release" [release version no]
git push --follow-tags
increase version no in build.py
git commit -am "version bump"
git push
pip3 install --upgrade --user ddadevops
```

## License

Copyright © 2023 meissa GmbH
Licensed under the [Apache License, Version 2.0](LICENSE) (the "License")