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# Copyright 2014, 2015 IBM Corp.
#
# All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import ast
import os
import pypowervm.adapter as adp
EOL = "\n"
COMMENT = "#"
INFO = "INFO{"
HEADERS = "HEADERS{"
BODY = "BODY{"
END_OF_SECTION = "END OF SECTION}"
class PVMFile(object):
def __init__(self, file_name=None):
self.comment = None
self.path = None
self.reason = None
self.status = None
self.headers = None
self.body = None
if file_name is not None:
self.load_file(file_name)
def load_file(self, file_name):
"""Load a REST response file."""
# If given a pathed filename, use it
dirname = os.path.dirname(file_name)
if not dirname:
dirname = os.path.dirname(os.path.dirname(__file__))
file_name = os.path.join(dirname, "data", file_name)
resp_file = open(file_name, "r")
if resp_file is None:
raise Exception("Could not load %s" % file_name)
while True:
line = resp_file.readline()
if line is None or len(line) == 0:
break
if len(line.strip()) == 0:
continue
if line.startswith(COMMENT):
continue
if line.startswith(INFO):
section = INFO
elif line.startswith(HEADERS):
section = HEADERS
elif line.startswith(BODY):
section = BODY
else:
resp_file.close()
raise Exception("Unknown line in file %s: %s" %
(file_name, line))
buf = _read_section(section, file_name, resp_file)
if line.startswith(INFO):
info = ast.literal_eval(buf)
self.comment = info['comment']
self.path = info['path']
self.reason = info['reason']
self.status = info['status']
elif line.startswith(HEADERS):
self.headers = ast.literal_eval(buf)
elif line.startswith(BODY):
self.body = buf
resp_file.close()
class PVMResp(PVMFile):
"""Class to encapsulate the text serialization of a response."""
def __init__(self, file_name=None, pvmfile=None, adapter=None):
"""Initialize this PVMResp by loading a file or pulling a PVMFile.
:param file_name: Name of a file to load.
:param pvmfile: An existing PVMFile instance. This PVMResp will use
its attributes. If both file_name and pvmfile are
specified, the file will be reloaded into the passed-in
PVMFile. This is probably not what you intended.
:param adapter: A pypowervm.adapter.Adapter, used for traits, etc.
"""
super(PVMResp, self).__init__()
# Legacy no-arg constructor - allow caller to set fields manually
if pvmfile is None and file_name is None:
return
if pvmfile is None:
self.load_file(file_name)
else:
# Use pvmfile
if file_name is not None:
pvmfile.load_file(file_name)
# Copy in attrs from pvmfile
self.comment = pvmfile.comment
self.path = pvmfile.path
self.reason = pvmfile.reason
self.status = pvmfile.status
self.headers = pvmfile.headers
self.body = pvmfile.body
self.response = adp.Response(reqmethod=None, reqpath=None,
status=self.status, reason=self.reason,
headers=self.headers, body=self.body)
self.response.adapter = adapter
self.response._unmarshal_atom()
def get_response(self):
return self.response
def refresh(self):
"""Do the query and get the response."""
print("Connecting.")
adap = adp.Adapter()
print("Reading path: " + self.path)
self.response = adap.read(self.path)
print("Received " + str(self.response))
def save(self, file_name):
everything = {
'comment': self.comment,
'path': self.path,
'reason': self.response.reason,
'status': self.response.status,
}
with open(file_name, 'wb') as df:
df.write("####################################################")
df.write(EOL)
df.write("# THIS IS AN AUTOMATICALLY GENERATED FILE")
df.write(EOL)
df.write("# DO NOT EDIT. ANY EDITS WILL BE LOST ON NEXT UPDATE")
df.write(EOL)
df.write("#")
df.write(EOL)
df.write("# To update file, run: create_httpresp.py -refresh ")
df.write(os.path.basename(file_name))
df.write(EOL)
df.write("#")
df.write(EOL)
df.write("####################################################")
df.write(EOL)
df.write(INFO + EOL)
df.write(str(everything))
df.write(EOL)
df.write(END_OF_SECTION)
df.write(EOL)
df.write(HEADERS + EOL)
df.write(str(self.response.headers))
df.write(EOL)
df.write(END_OF_SECTION)
df.write(EOL)
df.write(BODY + EOL)
df.write(self.response.body)
df.write(EOL)
df.write(END_OF_SECTION)
df.write(EOL)
def load_pvm_resp(file_name, adapter=None):
return PVMResp(file_name, adapter=adapter)
def _read_section(section, file_name, resp_file):
buf = ""
while True:
line = resp_file.readline()
if line is None or len(line) == 0:
raise Exception("Could not find end of section %s of file %s" %
(section, file_name))
if line.startswith(END_OF_SECTION):
return buf
buf += EOL + line
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