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nordugrid-arc-nox  1.1.0~rc6
Public Member Functions | Public Attributes | Static Public Attributes
storage.client.ByteIOClient Class Reference
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List of all members.

Public Member Functions

def __init__
def read
def write
def reset
def call
def call_raw

Public Attributes

 ns
 urls
 https
 print_xml
 xmlnode_class
 ssl_config
 cfg
 get_trusted_dns_method
 connection_cache
 semapool

Static Public Attributes

 NS_class = arc.NS

Detailed Description

Definition at line 815 of file client.py.


Constructor & Destructor Documentation

def storage.client.ByteIOClient.__init__ (   self,
  url,
  print_xml = False,
  ssl_config = {} 
)

Definition at line 817 of file client.py.

00817 
00818     def __init__(self, url, print_xml = False, ssl_config = {}):
00819         ns = self.NS_class('rb', rbyteio_uri)
00820         Client.__init__(self, url, ns, print_xml, ssl_config = ssl_config)


Member Function Documentation

def arcom.client.Client.call (   self,
  tree,
  return_tree_only = False 
) [inherited]
Create a SOAP message from an XMLTree and send it to the service.

call(tree, return_tree_only = False)

tree is an XMLTree object containing the content of the request
return_tree_only indicates that we only need to put the response into an XMLTree

Definition at line 60 of file client.py.

00060 
00061     def call(self, tree, return_tree_only = False):
00062         """ Create a SOAP message from an XMLTree and send it to the service.
00063         
00064         call(tree, return_tree_only = False)
00065         
00066         tree is an XMLTree object containing the content of the request
00067         return_tree_only indicates that we only need to put the response into an XMLTree
00068         """
00069         # create a new PayloadSOAP object with the given namespace
00070         out = arc.PayloadSOAP(self.ns)
00071         # add the content of the XMLTree to the XMLNode of the SOAP object
00072         tree.add_to_node(out)
00073         if self.print_xml:
00074             msg = out.GetXML()
00075             print 'Request:'
00076             print XMLTree(out).pretty_xml(indent = '    ', prefix = '        #   ')
00077             print
00078         # call the service and get back the response, and the HTTP status
00079         resp = self.call_raw(out)
00080         if self.print_xml:
00081             print 'Response:'
00082             try:
00083                 print XMLTree(from_string = resp).pretty_xml(indent = '    ', prefix = '        #   ')
00084             except:
00085                 print resp
00086             print
00087         if return_tree_only:
00088             # wrap the response into an XMLTree and return only the tree
00089             return XMLTree(from_string = resp, forget_namespace = True).get_trees('///')[0]
00090         else:
00091             return resp

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def arcom.client.Client.call_raw (   self,
  outpayload 
) [inherited]
Send a POST request with the SOAP XML message.

call_raw(outpayload)

outpayload is an XMLNode with the SOAP message

Definition at line 99 of file client.py.

00099 
00100     def call_raw(self, outpayload):
00101         """ Send a POST request with the SOAP XML message.
00102         
00103         call_raw(outpayload)
00104         
00105         outpayload is an XMLNode with the SOAP message
00106         """
00107         tid = thread.get_ident()
00108         s = self.connection_cache.get(tid, None)
00109         if s:
00110             try:
00111                 resp, status = s.process(outpayload)
00112                 if not self._fawlty(resp, status):
00113                     return resp.GetXML()
00114             except:
00115                 pass
00116             self.connection_cache[tid] = None
00117         if len(self.urls) == 0:
00118             log.msg(arc.WARNING, 'No URLs to connect to (in %s)' % str(self.__class__.__name__))
00119             raise Exception, 'No URLs to connect'
00120         random.shuffle(self.urls)
00121         #print "available URLs", [url.fullstr() for url in self.urls]
00122         for url in self.urls:
00123             #print "trying URL", url.fullstr()
00124             try:
00125                 s = arc.ClientSOAP(self.cfg, url)
00126                 if self.get_trusted_dns_method:
00127                     dnlist = self.get_trusted_dns_method()
00128                     if dnlist:
00129                         dnlistconf = arc.DNListHandlerConfig(dnlist, 'outgoing')
00130                         # _s points to the superclass, but not the object, so it needs the object as first argument
00131                         s._s._s.AddSecHandler(s, dnlistconf, arc.TLSSec)
00132                 resp, status = s.process(outpayload)
00133                 fawlty = self._fawlty(resp, status)
00134                 if fawlty:
00135                     raise Exception, fawlty
00136                 resp = resp.GetXML()
00137                 self.connection_cache[tid] = s
00138                 return resp
00139             except:
00140                 log.msg(arc.WARNING, "ERROR connecting to", url.fullstr())
00141                 pass
00142         log.msg(arc.ERROR, "ERROR connecting to all of these:", ', '.join([url.fullstr() for url in self.urls]))
00143         raise

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def storage.client.ByteIOClient.read (   self,
  start_offset = None,
  bytes_per_block = None,
  num_blocks = None,
  stride = None,
  file = None 
)

Definition at line 821 of file client.py.

00821 
00822     def read(self, start_offset = None, bytes_per_block = None, num_blocks = None, stride = None, file = None):
00823         request = []
00824         if start_offset is not None:
00825             request.append(('rb:start-offset', start_offset))
00826         if bytes_per_block is not None:
00827             request.append(('rb:bytes-per-block', bytes_per_block))
00828         if num_blocks is not None:
00829             request.append(('rb:num-blocks', num_blocks))
00830         if stride is not None:
00831             request.append(('rb:stride', stride))
00832         tree = XMLTree(from_tree = ('rb:read', request))
00833         msg = self.call(tree)
00834         xml = self.xmlnode_class(msg)
00835         data_encoded = str(xml.Child().Child().Get('transfer-information'))
00836         if file:
00837             file.write(base64.b64decode(data_encoded))
00838             file.close()
00839         else:
00840             return base64.b64decode(data_encoded)

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def arcom.client.Client.reset (   self) [inherited]

Definition at line 56 of file client.py.

00056 
00057     def reset(self):
00058         tid = thread.get_ident()
00059         self.connection_cache[tid] = None

def storage.client.ByteIOClient.write (   self,
  data,
  start_offset = None,
  bytes_per_block = None,
  stride = None 
)

Definition at line 841 of file client.py.

00841 
00842     def write(self, data, start_offset = None, bytes_per_block = None, stride = None):
00843         if isinstance(data,file):
00844             data = data.read()
00845         out = arc.PayloadSOAP(self.ns)
00846         request_node = out.NewChild('rb:write')
00847         if start_offset is not None:
00848             request_node.NewChild('rb:start-offset').Set(str(start_offset))
00849         if bytes_per_block is not None:
00850             request_node.NewChild('rb:bytes-per-block').Set(str(bytes_per_block))
00851         if stride is not None:
00852             request_node.NewChild('rb:stride').Set(str(stride))
00853         transfer_node = request_node.NewChild('rb:transfer-information')
00854         transfer_node.NewAttribute('transfer-mechanism').Set(byteio_simple_uri)
00855         encoded_data = base64.b64encode(data)
00856         transfer_node.Set(encoded_data)
00857         resp = self.call_raw(out)
00858         return resp

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Member Data Documentation

Definition at line 34 of file client.py.

Definition at line 36 of file client.py.

Definition at line 35 of file client.py.

Definition at line 30 of file client.py.

Definition at line 24 of file client.py.

arcom.client.Client.NS_class = arc.NS [static, inherited]

Definition at line 13 of file client.py.

Definition at line 31 of file client.py.

Definition at line 38 of file client.py.

Definition at line 33 of file client.py.

Definition at line 29 of file client.py.

Definition at line 32 of file client.py.


The documentation for this class was generated from the following file: