shell-operator


Nameshell-operator JSON
Version 0.1.3 PyPI version JSON
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SummaryPython SDK for Shell Operator hooks
upload_time2023-01-19 15:23:10
maintainer
docs_urlNone
authorEugene Shevchenko
requires_python>=3.7.2,<4.0.0
licenseApache-2.0
keywords
VCS
bugtrack_url
requirements No requirements were recorded.
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            # Deckhouse module SDK

**This package is discontinued in favor of `deckhouse-sdk` and will be deleted soon**

Deckhouse module SDK simplifies writing module hooks for operators:

- [Deckhouse](https://github.com/deckhouse/deckhouse)
- [Addon Operator](https://github.com/flant/addon-operator)
- [Shell Operator](https://github.com/flant/shell-operator) (values are unaccessable)

**NOTE**:
- The API is in alpha stage
- The name will change from `shell-operator` to something more deckhouse-related, probably,
  `deckhouse-sdk`

## Install

```bash
pip install shell-operator
```

## Sample hook

```python
# hello.py
from shell_operator import hook

def main(ctx: hook.Context):
    # Manipulate kubernetes state
    # ... object = { "kind" : "Pod", "apiVersion" : "v1", ... }
    ctx.kubernetes.create_or_update(object)

    # Export metrics
    # ... metric = { "name" : "power", "group": "my_hook", "set" : 9000, ... }
    ctx.metrics.collect(metric)

    # Use in-memory values for helm chart. Shell Operator does not support values, but Addon Operator and Deckhouse do.
    ctx.values.myModule.deployment.replicas = 5


if __name__ == "__main__":
    hook.run(main, configpath="hello.yaml") # 'config' arg is also supported for raw string
```

```yaml
# hello.yaml
configVersion: v1
onStartup: 10
```

## How to test

An example for pytest

```python
# hello_test.py

from hello import main
from shell_operator import hook

# Inputs
#   initial_values = { ... }
#   binding_context = [ { ... } ]
# Outputs
#   expected_metrics = [ ... ]
#   expected_kube_operations = [ ... ]
#   expected_values_patches = [ ... ]
#   expected_values = { ... }

def test_hello():
    out = hook.testrun(main, binding_context, initial_values)

    assert out.metrics.data == expected_metrics
    assert out.kube_operations.data == expected_kube_operations
    assert out.values_patches.data == expected_values_patches

    assert out.values.myModule.deployment.repicas == 5
```

            

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    "description": "# Deckhouse module SDK\n\n**This package is discontinued in favor of `deckhouse-sdk` and will be deleted soon**\n\nDeckhouse module SDK simplifies writing module hooks for operators:\n\n- [Deckhouse](https://github.com/deckhouse/deckhouse)\n- [Addon Operator](https://github.com/flant/addon-operator)\n- [Shell Operator](https://github.com/flant/shell-operator) (values are unaccessable)\n\n**NOTE**:\n- The API is in alpha stage\n- The name will change from `shell-operator` to something more deckhouse-related, probably,\n  `deckhouse-sdk`\n\n## Install\n\n```bash\npip install shell-operator\n```\n\n## Sample hook\n\n```python\n# hello.py\nfrom shell_operator import hook\n\ndef main(ctx: hook.Context):\n    # Manipulate kubernetes state\n    # ... object = { \"kind\" : \"Pod\", \"apiVersion\" : \"v1\", ... }\n    ctx.kubernetes.create_or_update(object)\n\n    # Export metrics\n    # ... metric = { \"name\" : \"power\", \"group\": \"my_hook\", \"set\" : 9000, ... }\n    ctx.metrics.collect(metric)\n\n    # Use in-memory values for helm chart. Shell Operator does not support values, but Addon Operator and Deckhouse do.\n    ctx.values.myModule.deployment.replicas = 5\n\n\nif __name__ == \"__main__\":\n    hook.run(main, configpath=\"hello.yaml\") # 'config' arg is also supported for raw string\n```\n\n```yaml\n# hello.yaml\nconfigVersion: v1\nonStartup: 10\n```\n\n## How to test\n\nAn example for pytest\n\n```python\n# hello_test.py\n\nfrom hello import main\nfrom shell_operator import hook\n\n# Inputs\n#   initial_values = { ... }\n#   binding_context = [ { ... } ]\n# Outputs\n#   expected_metrics = [ ... ]\n#   expected_kube_operations = [ ... ]\n#   expected_values_patches = [ ... ]\n#   expected_values = { ... }\n\ndef test_hello():\n    out = hook.testrun(main, binding_context, initial_values)\n\n    assert out.metrics.data == expected_metrics\n    assert out.kube_operations.data == expected_kube_operations\n    assert out.values_patches.data == expected_values_patches\n\n    assert out.values.myModule.deployment.repicas == 5\n```\n",
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