Merge pull request #156 from vdice/templates/add-http-py-p2

feat(templates): add http-py-p2

Author: vdice

templates/http-py-p2/content/.gitignore

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+__pycache__
+*.wasm
+.spin

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
+```

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")
+        )

templates/http-py-p2/content/requirements.txt

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+spin-sdk == 3.4.1
+componentize-py == 0.17.2

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"]

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"]

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*$" }