2017-05-19 22:40:01 +01:00
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from sanic.response import ALL_STATUS_CODES, COMMON_STATUS_CODES
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2017-05-19 21:35:04 +01:00
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2017-01-13 00:54:34 +00:00
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TRACEBACK_STYLE = '''
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<style>
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body {
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padding: 20px;
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font-family: Arial, sans-serif;
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}
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p {
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margin: 0;
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}
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.summary {
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padding: 10px;
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}
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h1 {
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margin-bottom: 0;
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}
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h3 {
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margin-top: 10px;
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}
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h3 code {
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font-size: 24px;
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}
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.frame-line > * {
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padding: 5px 10px;
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}
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.frame-line {
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margin-bottom: 5px;
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}
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.frame-code {
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font-size: 16px;
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padding-left: 30px;
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}
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.tb-wrapper {
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border: 1px solid #f3f3f3;
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}
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.tb-header {
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background-color: #f3f3f3;
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padding: 5px 10px;
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}
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2017-05-01 17:56:33 +01:00
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.tb-border {
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padding-top: 20px;
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}
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2017-01-13 00:54:34 +00:00
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.frame-descriptor {
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background-color: #e2eafb;
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}
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.frame-descriptor {
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font-size: 14px;
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}
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</style>
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'''
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TRACEBACK_WRAPPER_HTML = '''
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<html>
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<head>
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{style}
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</head>
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<body>
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2017-05-01 17:56:33 +01:00
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{inner_html}
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<div class="summary">
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<p>
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2017-01-13 00:54:34 +00:00
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<b>{exc_name}: {exc_value}</b>
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2017-03-03 16:49:35 +00:00
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while handling path <code>{path}</code>
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2017-01-13 00:54:34 +00:00
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</p>
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</div>
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</body>
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</html>
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'''
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2017-05-01 17:56:33 +01:00
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TRACEBACK_WRAPPER_INNER_HTML = '''
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<h1>{exc_name}</h1>
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<h3><code>{exc_value}</code></h3>
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<div class="tb-wrapper">
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<p class="tb-header">Traceback (most recent call last):</p>
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{frame_html}
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</div>
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'''
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TRACEBACK_BORDER = '''
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<div class="tb-border">
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<b><i>
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The above exception was the direct cause of the
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following exception:
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</i></b>
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</div>
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'''
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2017-01-13 00:54:34 +00:00
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TRACEBACK_LINE_HTML = '''
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<div class="frame-line">
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<p class="frame-descriptor">
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File {0.filename}, line <i>{0.lineno}</i>,
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in <code><b>{0.name}</b></code>
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</p>
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<p class="frame-code"><code>{0.line}</code></p>
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</div>
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'''
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INTERNAL_SERVER_ERROR_HTML = '''
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<h1>Internal Server Error</h1>
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<p>
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The server encountered an internal error and cannot complete
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your request.
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</p>
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'''
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2016-10-03 04:47:15 +01:00
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2016-10-15 03:53:49 +01:00
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2017-05-20 18:44:09 +01:00
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_sanic_exceptions = {}
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2017-05-20 09:21:09 +01:00
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def add_status_code(code):
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"""
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2017-05-20 18:29:00 +01:00
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Decorator used for adding exceptions to _sanic_exceptions.
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2017-05-20 09:21:09 +01:00
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"""
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def class_decorator(cls):
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cls.status_code = code
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2017-05-20 18:29:00 +01:00
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_sanic_exceptions[code] = cls
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2017-05-20 09:21:09 +01:00
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return cls
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return class_decorator
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2016-10-03 05:11:38 +01:00
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class SanicException(Exception):
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2017-02-09 01:59:34 +00:00
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2017-05-19 22:40:01 +01:00
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def __init__(self, message, status_code=None):
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super().__init__(message)
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2016-10-15 03:53:49 +01:00
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if status_code is not None:
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self.status_code = status_code
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2016-10-03 05:11:38 +01:00
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2017-05-20 09:21:09 +01:00
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@add_status_code(404)
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2016-10-03 05:11:38 +01:00
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class NotFound(SanicException):
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2017-05-21 03:30:08 +01:00
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pass
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2016-10-15 03:53:49 +01:00
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2017-05-20 09:21:09 +01:00
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@add_status_code(400)
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2016-10-03 05:11:38 +01:00
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class InvalidUsage(SanicException):
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2017-05-21 03:30:08 +01:00
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pass
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2016-10-15 03:53:49 +01:00
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2017-05-20 09:21:09 +01:00
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@add_status_code(500)
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2016-10-03 05:11:38 +01:00
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class ServerError(SanicException):
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2017-05-21 03:30:08 +01:00
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pass
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2016-10-15 03:53:49 +01:00
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2016-10-03 04:47:15 +01:00
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2017-05-21 03:30:08 +01:00
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class URLBuildError(ServerError):
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pass
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2017-02-02 17:21:14 +00:00
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2016-10-24 09:21:06 +01:00
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class FileNotFound(NotFound):
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2017-05-21 03:30:08 +01:00
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pass
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2016-10-24 09:21:06 +01:00
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def __init__(self, message, path, relative_url):
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super().__init__(message)
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self.path = path
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self.relative_url = relative_url
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2017-05-20 09:21:09 +01:00
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@add_status_code(408)
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2016-11-26 04:55:45 +00:00
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class RequestTimeout(SanicException):
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2017-05-21 03:30:08 +01:00
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pass
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2016-11-26 04:55:45 +00:00
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2017-05-20 09:21:09 +01:00
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@add_status_code(413)
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2016-12-04 01:50:32 +00:00
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class PayloadTooLarge(SanicException):
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2017-05-21 03:30:08 +01:00
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pass
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2016-12-04 01:50:32 +00:00
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2017-02-09 01:59:34 +00:00
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2017-05-21 03:30:08 +01:00
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class HeaderNotFound(InvalidUsage):
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pass
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2017-01-31 01:04:51 +00:00
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2017-05-20 09:21:09 +01:00
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@add_status_code(416)
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2017-01-31 01:04:51 +00:00
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class ContentRangeError(SanicException):
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2017-05-21 03:30:08 +01:00
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pass
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2017-01-31 01:04:51 +00:00
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def __init__(self, message, content_range):
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super().__init__(message)
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self.headers = {
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'Content-Type': 'text/plain',
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"Content-Range": "bytes */%s" % (content_range.total,)
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}
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class InvalidRangeType(ContentRangeError):
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pass
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2017-05-19 22:40:01 +01:00
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2017-06-23 15:12:15 +01:00
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@add_status_code(401)
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class Unauthorized(SanicException):
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"""
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Unauthorized exception (401 HTTP status code).
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:param scheme: Name of the authentication scheme to be used.
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:param realm: Description of the protected area. (optional)
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:param others: A dict containing values to add to the WWW-Authenticate
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header that is generated. This is especially useful when dealing with the
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Digest scheme. (optional)
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"""
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pass
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def __init__(self, message, scheme, realm="", others=None):
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super().__init__(message)
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adds = ""
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if others is not None:
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values = ["{!s}={!r}".format(k, v) for k, v in others.items()]
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adds = ', '.join(values)
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adds = ', {}'.format(adds)
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self.headers = {
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"WWW-Authenticate": "{} realm='{}'{}".format(scheme, realm, adds)
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}
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2017-05-19 22:40:01 +01:00
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def abort(status_code, message=None):
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"""
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Raise an exception based on SanicException. Returns the HTTP response
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message appropriate for the given status code, unless provided.
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:param status_code: The HTTP status code to return.
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:param message: The HTTP response body. Defaults to the messages
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in response.py for the given status code.
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"""
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if message is None:
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message = COMMON_STATUS_CODES.get(status_code,
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ALL_STATUS_CODES.get(status_code))
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2017-05-21 03:30:08 +01:00
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# These are stored as bytes in the STATUS_CODES dict
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message = message.decode('utf8')
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2017-05-20 18:29:00 +01:00
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sanic_exception = _sanic_exceptions.get(status_code, SanicException)
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2017-05-19 22:40:01 +01:00
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raise sanic_exception(message=message, status_code=status_code)
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