def render(self):
"""
Renders the requested resource returned from the self.process() method.
"""
# traverse the resource tree
child = getChildForRequest(self.env.tree, self)
# check result and either render direct or in thread
if IFileSystemResource.providedBy(child):
# render direct
return child.render(self)
elif IStatical.providedBy(child):
# render direct
return child.render(self)
elif IScriptResource.providedBy(child):
msg = "Script resources may not be called via SFTP."
raise ForbiddenError(msg)
elif IRESTResource.providedBy(child):
return child.render(self)
elif IResource.providedBy(child):
return child.render(self)
msg = "I don't know how to handle this resource type %s"
raise InternalServerError(msg % type(child))
raise
# set attributes
try:
self.attrs.update(result.getMetadata())
except:
pass
if IRESTResource.providedBy(result):
# some REST resource
try:
data = result.render_GET(proc)
except SeisHubError, e:
raise SFTPError(FX_FAILURE, e.message)
except:
raise
self.data = StringIO.StringIO(data)
elif IFileSystemResource.providedBy(result):
# some file system resource
self.data = result.open()
else:
msg = "I don't know how to handle this resource type %s"
raise SFTPError(FX_FAILURE, msg % type(result))
def readChunk(self, offset, length):
"""
Read from the file.
If EOF is reached before any data is read, raise EOFError.
This method returns the data as a string, or a Deferred that is
called back with same.
