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181 lines
6.0 KiB
181 lines
6.0 KiB
"""A small application that can be used to test a WSGI server and check |
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it for WSGI compliance. |
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""" |
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from __future__ import annotations |
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import os |
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import sys |
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import typing as t |
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from textwrap import wrap |
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from markupsafe import escape |
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from . import __version__ as _werkzeug_version |
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from .wrappers.request import Request |
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from .wrappers.response import Response |
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TEMPLATE = """\ |
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<!doctype html> |
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<html lang=en> |
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<title>WSGI Information</title> |
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<style type="text/css"> |
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@import url(https://fonts.googleapis.com/css?family=Ubuntu); |
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body { font-family: 'Lucida Grande', 'Lucida Sans Unicode', 'Geneva', |
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'Verdana', sans-serif; background-color: white; color: #000; |
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font-size: 15px; text-align: center; } |
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div.box { text-align: left; width: 45em; margin: auto; padding: 50px 0; |
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background-color: white; } |
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h1, h2 { font-family: 'Ubuntu', 'Lucida Grande', 'Lucida Sans Unicode', |
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'Geneva', 'Verdana', sans-serif; font-weight: normal; } |
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h1 { margin: 0 0 30px 0; } |
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h2 { font-size: 1.4em; margin: 1em 0 0.5em 0; } |
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table { width: 100%%; border-collapse: collapse; border: 1px solid #AFC5C9 } |
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table th { background-color: #AFC1C4; color: white; font-size: 0.72em; |
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font-weight: normal; width: 18em; vertical-align: top; |
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padding: 0.5em 0 0.1em 0.5em; } |
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table td { border: 1px solid #AFC5C9; padding: 0.1em 0 0.1em 0.5em; } |
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code { font-family: 'Consolas', 'Monaco', 'Bitstream Vera Sans Mono', |
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monospace; font-size: 0.7em; } |
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ul li { line-height: 1.5em; } |
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ul.path { font-size: 0.7em; margin: 0 -30px; padding: 8px 30px; |
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list-style: none; background: #E8EFF0; } |
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ul.path li { line-height: 1.6em; } |
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li.virtual { color: #999; text-decoration: underline; } |
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li.exp { background: white; } |
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</style> |
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<div class="box"> |
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<h1>WSGI Information</h1> |
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<p> |
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This page displays all available information about the WSGI server and |
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the underlying Python interpreter. |
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<h2 id="python-interpreter">Python Interpreter</h2> |
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<table> |
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<tr> |
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<th>Python Version |
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<td>%(python_version)s |
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<tr> |
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<th>Platform |
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<td>%(platform)s [%(os)s] |
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<tr> |
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<th>API Version |
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<td>%(api_version)s |
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<tr> |
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<th>Byteorder |
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<td>%(byteorder)s |
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<tr> |
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<th>Werkzeug Version |
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<td>%(werkzeug_version)s |
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</table> |
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<h2 id="wsgi-environment">WSGI Environment</h2> |
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<table>%(wsgi_env)s</table> |
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<h2 id="installed-eggs">Installed Eggs</h2> |
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<p> |
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The following python packages were installed on the system as |
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Python eggs: |
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<ul>%(python_eggs)s</ul> |
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<h2 id="sys-path">System Path</h2> |
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<p> |
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The following paths are the current contents of the load path. The |
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following entries are looked up for Python packages. Note that not |
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all items in this path are folders. Gray and underlined items are |
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entries pointing to invalid resources or used by custom import hooks |
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such as the zip importer. |
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<p> |
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Items with a bright background were expanded for display from a relative |
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path. If you encounter such paths in the output you might want to check |
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your setup as relative paths are usually problematic in multithreaded |
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environments. |
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<ul class="path">%(sys_path)s</ul> |
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</div> |
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""" |
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def iter_sys_path() -> t.Iterator[tuple[str, bool, bool]]: |
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if os.name == "posix": |
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def strip(x: str) -> str: |
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prefix = os.path.expanduser("~") |
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if x.startswith(prefix): |
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x = f"~{x[len(prefix) :]}" |
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return x |
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else: |
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def strip(x: str) -> str: |
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return x |
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cwd = os.path.abspath(os.getcwd()) |
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for item in sys.path: |
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path = os.path.join(cwd, item or os.path.curdir) |
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yield strip(os.path.normpath(path)), not os.path.isdir(path), path != item |
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@Request.application |
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def test_app(req: Request) -> Response: |
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"""Simple test application that dumps the environment. You can use |
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it to check if Werkzeug is working properly: |
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.. sourcecode:: pycon |
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>>> from werkzeug.serving import run_simple |
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>>> from werkzeug.testapp import test_app |
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>>> run_simple('localhost', 3000, test_app) |
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* Running on http://localhost:3000/ |
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The application displays important information from the WSGI environment, |
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the Python interpreter and the installed libraries. |
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""" |
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try: |
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import pkg_resources |
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except ImportError: |
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eggs: t.Iterable[t.Any] = () |
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else: |
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eggs = sorted( |
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pkg_resources.working_set, |
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key=lambda x: x.project_name.lower(), |
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) |
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python_eggs = [] |
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for egg in eggs: |
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try: |
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version = egg.version |
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except (ValueError, AttributeError): |
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version = "unknown" |
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python_eggs.append( |
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f"<li>{escape(egg.project_name)} <small>[{escape(version)}]</small>" |
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) |
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wsgi_env = [] |
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sorted_environ = sorted(req.environ.items(), key=lambda x: repr(x[0]).lower()) |
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for key, value in sorted_environ: |
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value = "".join(wrap(str(escape(repr(value))))) |
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wsgi_env.append(f"<tr><th>{escape(key)}<td><code>{value}</code>") |
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sys_path = [] |
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for item, virtual, expanded in iter_sys_path(): |
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class_ = [] |
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if virtual: |
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class_.append("virtual") |
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if expanded: |
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class_.append("exp") |
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class_ = f' class="{" ".join(class_)}"' if class_ else "" |
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sys_path.append(f"<li{class_}>{escape(item)}") |
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context = { |
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"python_version": "<br>".join(escape(sys.version).splitlines()), |
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"platform": escape(sys.platform), |
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"os": escape(os.name), |
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"api_version": sys.api_version, |
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"byteorder": sys.byteorder, |
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"werkzeug_version": _werkzeug_version, |
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"python_eggs": "\n".join(python_eggs), |
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"wsgi_env": "\n".join(wsgi_env), |
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"sys_path": "\n".join(sys_path), |
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} |
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return Response(TEMPLATE % context, mimetype="text/html") |
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if __name__ == "__main__": |
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from .serving import run_simple |
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run_simple("localhost", 5000, test_app, use_reloader=True)
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