# C4kBuild

Generates a kubernetes deployment out of c4k inputs. Can be combined with Terraform- & ProvsK3s-Builds.

```mermaid
classDiagram
    class C4kBuild {
        def update_runtime_config(dns_record) - updates informations after terraform apply
        def write_c4k_config() - provide the configuration for c4k
        def write_c4k_auth() - provide the auth for c4k
        c4k_apply(dry_run=False) - genereates the kubernetes manifest
    }
```

## Input

| name                       | description                                      | default                                                          |
| -------------------------- | ------------------------------------------------ | ---------------------------------------------------------------- |
| c4k_executable_name        | f"c4k-{self.c4k_executable_name}-standalone.jar" | {module}                                                         |
| c4k_config                 | the c4k configuration as map                     | {}                                                               |
| c4k_auth                   | the c4k auth as map                              | {}                                                               |
| c4k_grafana_cloud_url      | url for your prometheus endpoint                 | "https://prometheus-prod-01-eu-west-0.grafana.net/api/prom/push" |
| c4k_grafana_cloud_user     |                                                  |                                                                  |
| c4k_grafana_cloud_password |                                                  |                                                                  |

### Credentials Mapping defaults

```python
[
    {
        "gopass_path": "server/meissa/grafana-cloud",
        "gopass_field": "grafana-cloud-user",
        "name": "c4k_grafana_cloud_user",
    },
    {
        "gopass_path": "server/meissa/grafana-cloud",
        "name": "c4k_grafana_cloud_password",
    },
]
```

## Example Usage
### build.py

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

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

class MyBuild(DevopsTerraformBuild, C4kBuild, ProvsK3sBuild):
    pass

@init
def initialize(project):
    project.build_depends_on("ddadevops>=4.0.0")
    stage = environ["STAGE"]
    
    if stage == "test":
        tmp_letsencrypt_endpoint = "staging"
        tmp_jitsi_secrets_path = "server/jitsi-test"
    elif stage == "prod":
        tmp_letsencrypt_endpoint = "prod"
        tmp_jitsi_secrets_path = "server/jitsi-prod"

    c4k_config = {"issuer": tmp_letsencrypt_endpoint}
    c4k_auth = {
        "jvb-auth-password": gopass_field_from_path(
            tmp_jitsi_secrets_path, "jvb-auth-password"
        ),
        "jicofo-auth-password": gopass_field_from_path(
            tmp_jitsi_secrets_path, "jvb-auth-password"
        ),
        "jicofo-component-secret": gopass_field_from_path(
            tmp_jitsi_secrets_path, "jicofo-component-secret"
        ),
    }

    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": stage,
        "project_root_path": PROJECT_ROOT_PATH,
        "build_types": ["TERRAFORM", "C4K", "K3S"],
        "mixin_types": [],
        "tf_provider_types": ["DIGITALOCEAN", "HETZNER"],
        "tf_use_workspace": False,
        "tf_terraform_semantic_version": "1.4.2",
        "do_as_backend": True,
        "do_bucket": "my-configuration",
        "k3s_app_filename_to_provision": "out_jitsi.yaml",
        "k3s_letsencrypt_endpoint": tmp_letsencrypt_endpoint,
        "k3s_letsencrypt_email": "admin@your.domain",
        "c4k_config": c4k_config,
        "c4k_auth": c4k_auth,
    }

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


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


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


@task
def show_config(project):
    build = get_devops_build(project)
    build.apply(True)
    out_json = build.read_output_json()
    build.update_runtime_config(
        DnsRecord(
            fqdn=out_json["fqdn"]["value"],
            ipv4=out_json["ipv4"]["value"],
            ipv6=out_json["ipv6"]["value"],
        )
    )
    build.write_c4k_config()
    build.write_c4k_auth()
    build.c4k_apply(dry_run=True)
    build.write_provs_config()
    build.provs_apply(dry_run=True)


@task
def apply(project):
    build = get_devops_build(project)
    build.apply(True)
    out_json = build.read_output_json()
    build.update_runtime_config(
        DnsRecord(
            fqdn=out_json["fqdn"]["value"],
            ipv4=out_json["ipv4"]["value"],
            ipv6=out_json["ipv6"]["value"],
        )
    )
    build.write_c4k_config()
    build.write_c4k_auth()
    build.c4k_apply()
    build.write_provs_config()
    time.sleep(5)
    build.provs_apply()


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

### call the build

```bash
pyb apply
```