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Merged
vdice merged 1 commit into from
Apr 28, 2026
Merged

feat(templates): add http-py-p2 #156

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3 changes: 3 additions & 0 deletions templates/http-py-p2/content/.gitignore
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__pycache__
*.wasm
.spin
19 changes: 19 additions & 0 deletions templates/http-py-p2/content/README.md
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# A HTTP python component using componentize-py

This template uses the latest v3 version of the Spin Python SDK ([3.4.1](https://pypi.org/project/spin-sdk/3.4.1/))
for compatibility with Spin 3.x (and hosts that use this major version). The 'p2' corresponds to the wasip2 or
WASI Preview 2 set of WASI APIs, as used by Spin 3.x.

## Installing the requirements

To build the component, [`componentize-py`](https://pypi.org/project/componentize-py/) and [`spin-sdk`](https://pypi.org/project/spin-sdk/) are required. To install them, run:

```bash
pip3 install -r requirements.txt
```

## Building and Running

```
spin up --build
```
9 changes: 9 additions & 0 deletions templates/http-py-p2/content/app.py
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from spin_sdk.http import IncomingHandler, Request, Response

class IncomingHandler(IncomingHandler):
def handle_request(self, request: Request) -> Response:
return Response(
200,
{"content-type": "text/plain"},
bytes("Hello from Python!", "utf-8")
)
2 changes: 2 additions & 0 deletions templates/http-py-p2/content/requirements.txt
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spin-sdk == 3.4.1
componentize-py == 0.17.2
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Contributor Author

@vdice vdice Apr 27, 2026

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I copied this (and the other files) from the http-py template that exists in source control prior to the v4 overhaul. It builds successfully, as expected. However, when I attempt to bump componentize-py to the latest 0.23.0 version, I see this on spin build:

$ spin up --build
Building component test with `componentize-py -w spin-http componentize app -o app.wasm`
Traceback (most recent call last):
  File "/Users/vdice/code/github.com/spinframework/spin-python-sdk/.http-py-p2/.venv/bin/componentize-py", line 6, in <module>
    sys.exit(script())
             ~~~~~~^^
AssertionError: Traceback (most recent call last):
  File "/0/app.py", line 1, in <module>
    from spin_sdk.http import IncomingHandler, Request, Response
  File "/1/spin_sdk/http/__init__.py", line 5, in <module>
    from spin_sdk.http import poll_loop
  File "/1/spin_sdk/http/poll_loop.py", line 14, in <module>
    from spin_sdk.wit.types import Ok, Err
ModuleNotFoundError: No module named 'spin_sdk.wit.types'


Caused by:
    ModuleNotFoundError: No module named 'spin_sdk.wit.types'

@dicej any ideas?

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@dicej dicej Apr 27, 2026

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I recommend leaving the componentize-py version as it was. Per Rust's semver rules, breaking changes are allowed when the x changes in a 0.x.y version bump, so older apps/templates aren't necessarily compatible with newer componentize-py versions and vice-versa.

17 changes: 17 additions & 0 deletions templates/http-py-p2/content/spin.toml
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spin_manifest_version = 2

[application]
authors = ["{{authors}}"]
description = "{{project-description}}"
name = "{{project-name}}"
version = "0.1.0"

[[trigger.http]]
route = "{{http-path}}"
component = "{{project-name | kebab_case}}"

[component.{{project-name | kebab_case}}]
source = "app.wasm"
[component.{{project-name | kebab_case}}.build]
command = "componentize-py -w spin-http componentize app -o app.wasm"
watch = ["*.py", "requirements.txt"]
10 changes: 10 additions & 0 deletions templates/http-py-p2/metadata/snippets/component.txt
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[[trigger.http]]
route = "{{http-path}}"
component = "{{project-name | kebab_case}}"

[component.{{project-name | kebab_case}}]
source = "{{ output-path }}/app.wasm"
[component.{{project-name | kebab_case}}.build]
command = "componentize-py -w spin-http componentize app -o app.wasm"
workdir = "{{ output-path }}"
watch = ["*.py", "requirements.txt"]
13 changes: 13 additions & 0 deletions templates/http-py-p2/metadata/spin-template.toml
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manifest_version = "1"
id = "http-py-p2"
description = "HTTP request handler using Python compatible with Spin 3.x hosts"
tags = ["http", "python", "py"]

[add_component]
skip_files = ["spin.toml"]
[add_component.snippets]
component = "component.txt"

[parameters]
project-description = { type = "string", prompt = "Description", default = "" }
http-path = { type = "string", prompt = "HTTP path", default = "/...", pattern = "^/\\S*$" }
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