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- # Source Generated with Decompyle++
- # File: in.pyc (Python 2.6)
-
- """This module provides a common interface for all HTTP requests.
-
- HttpResponse: Represents the server's response to an HTTP request. Provides
- an interface identical to httplib.HTTPResponse which is the response
- expected from higher level classes which use HttpClient.request.
-
- GenericHttpClient: Provides an interface (superclass) for an object
- responsible for making HTTP requests. Subclasses of this object are
- used in AtomService and GDataService to make requests to the server. By
- changing the http_client member object, the AtomService is able to make
- HTTP requests using different logic (for example, when running on
- Google App Engine, the http_client makes requests using the App Engine
- urlfetch API).
- """
- __author__ = 'api.jscudder (Jeff Scudder)'
- import StringIO
- USER_AGENT = '%s GData-Python/1.2.2'
-
- class Error(Exception):
- pass
-
-
- class UnparsableUrlObject(Error):
- pass
-
-
- class ContentLengthRequired(Error):
- pass
-
-
- class HttpResponse(object):
-
- def __init__(self, body = None, status = None, reason = None, headers = None):
- """Constructor for an HttpResponse object.
-
- HttpResponse represents the server's response to an HTTP request from
- the client. The HttpClient.request method returns a httplib.HTTPResponse
- object and this HttpResponse class is designed to mirror the interface
- exposed by httplib.HTTPResponse.
-
- Args:
- body: A file like object, with a read() method. The body could also
- be a string, and the constructor will wrap it so that
- HttpResponse.read(self) will return the full string.
- status: The HTTP status code as an int. Example: 200, 201, 404.
- reason: The HTTP status message which follows the code. Example:
- OK, Created, Not Found
- headers: A dictionary containing the HTTP headers in the server's
- response. A common header in the response is Content-Length.
- """
- if body:
- if hasattr(body, 'read'):
- self._body = body
- else:
- self._body = StringIO.StringIO(body)
- else:
- self._body = None
- if status is not None:
- self.status = int(status)
- else:
- self.status = None
- self.reason = reason
- if not headers:
- pass
- self._headers = { }
-
-
- def getheader(self, name, default = None):
- if name in self._headers:
- return self._headers[name]
- return default
-
-
- def read(self, amt = None):
- if not amt:
- return self._body.read()
- return self._body.read(amt)
-
-
-
- class GenericHttpClient(object):
- debug = False
-
- def __init__(self, http_client, headers = None):
- """
-
- Args:
- http_client: An object which provides a request method to make an HTTP
- request. The request method in GenericHttpClient performs a
- call-through to the contained HTTP client object.
- headers: A dictionary containing HTTP headers which should be included
- in every HTTP request. Common persistent headers include
- 'User-Agent'.
- """
- self.http_client = http_client
- if not headers:
- pass
- self.headers = { }
-
-
- def request(self, operation, url, data = None, headers = None):
- all_headers = self.headers.copy()
- if headers:
- all_headers.update(headers)
-
- return self.http_client.request(operation, url, data = data, headers = all_headers)
-
-
- def get(self, url, headers = None):
- return self.request('GET', url, headers = headers)
-
-
- def post(self, url, data, headers = None):
- return self.request('POST', url, data = data, headers = headers)
-
-
- def put(self, url, data, headers = None):
- return self.request('PUT', url, data = data, headers = headers)
-
-
- def delete(self, url, headers = None):
- return self.request('DELETE', url, headers = headers)
-
-
-
- class GenericToken(object):
- '''Represents an Authorization token to be added to HTTP requests.
-
- Some Authorization headers included calculated fields (digital
- signatures for example) which are based on the parameters of the HTTP
- request. Therefore the token is responsible for signing the request
- and adding the Authorization header.
- '''
-
- def perform_request(self, http_client, operation, url, data = None, headers = None):
- '''For the GenericToken, no Authorization token is set.'''
- return http_client.request(operation, url, data = data, headers = headers)
-
-
- def valid_for_scope(self, url):
- """Tells the caller if the token authorizes access to the desired URL.
-
- Since the generic token doesn't add an auth header, it is not valid for
- any scope.
- """
- return False
-
-
-