https://github.com/pawelchcki/cdk8s-bazel

https://github.com/pawelchcki/cdk8s-bazel

Last synced: about 2 months ago
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• Host: GitHub
• URL: https://github.com/pawelchcki/cdk8s-bazel
• Owner: pawelchcki
• License: apache-2.0
• Created: 2021-06-13T17:36:29.000Z (over 3 years ago)
• Default Branch: main
• Last Pushed: 2021-08-25T10:03:20.000Z (over 3 years ago)
• Last Synced: 2024-04-18T04:11:48.310Z (8 months ago)
• Language: Python
• Size: 464 KB
• Stars: 1
• Watchers: 2
• Forks: 0
• Open Issues: 1
• Metadata Files:
  • Readme: README.md
  • Contributing: CONTRIBUTING.md
  • License: LICENSE

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README

        
# Bazel wrapper for cdk8s

This bazel repository contains simple wrappers around [cdk8s](https://github.com/cdk8s-team/cdk8s) Python library.

It allows building Kubernetes configuration using Python objects, which might be prefferable over templating

yaml using text templating language.

## Usage

See: examples folder

### WORKSPACE

```python

load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")

http_archive(

    name = "bazel_cdk8s",

    urls = ["https://github.com/pawelchcki/cdk8s-bazel/releases/download/0.2.0/cdk8s-bazel-0.2.0.tar.gz"],

    sha256 = "5731046ee90da48cb484f7cff685286f3327d321365485f30540bb61b03aed91",

)

load("@bazel_cdk8s//deps:python.bzl", "cdk8s_rules_python")

cdk8s_rules_python()

load("@bazel_cdk8s//:deps.bzl", "cdk8s_init")

cdk8s_init()

```

### BUILD

```python

load("@bazel_cdk8s//:rules.bzl", "cdk8s_yaml")

cdk8s_yaml(name="simple", main = "simple.py")

```

### simple.py

```python

#!/usr/bin/env python

from constructs import Construct, MetadataEntry

from cdk8s import App, Chart

from cdk8s_py.api import k8s

class MyChart(Chart):

    def __init__(self, scope: Construct, id: str):

        super().__init__(scope, id)

        label = {"app": id}

        hello_kubernetes = k8s.Container(

            name='hello-kubernetes',

            image='paulbouwer/hello-kubernetes:1.7',

            ports=[k8s.ContainerPort(container_port=8080)]

        )

        k8s.KubeStatefulSet(self, 'app-set',

                            spec=k8s.StatefulSetSpec(

                                replicas=1,

                                service_name=id,

                                selector=k8s.LabelSelector(match_labels=label),

                                template=k8s.PodTemplateSpec(

                                    metadata=k8s.ObjectMeta(labels=label),

                                    spec=k8s.PodSpec(

                                        containers=[hello_kubernetes]))))

app = App()

MyChart(app, "sample")

app.synth()

```

### Output:

```yaml

# $ bazel build :simple.yaml

# $ cat bazel-bin/sample.yaml

apiVersion: apps/v1

kind: StatefulSet

metadata:

  name: sample-app-set-c8800f2b

spec:

  replicas: 1

  selector:

    matchLabels:

      app: sample

  serviceName: sample

  template:

    metadata:

      labels:

        app: sample

    spec:

      containers:

        - image: paulbouwer/hello-kubernetes:1.7

          name: hello-kubernetes

          ports:

            - containerPort: 8080

```