It is well understood that forking a process for running Python, as CGI does, is slower than embedding Python, as WSGI does. I would like to implement an XML-RPC interface using the SimpleXMLRPCServer included in the standard Python library and I already have an implementation that works via CGI. I believe there should be a faster way. I'd like to try WSGI but first I need a request handler for WSGI and there does not appear to be one in SimpleXMLRPCServer already. Am I all wet or is there no equivalent of this in the standard library under Python 2.6, 2.7, 3.x?
Here is my initial implementation of a WSGI replacement for CGIXMLRPCRequestHandler:
from xmlrpclib import SimpleXMLRPCDispatcher
class WSGIXMLRPCRequestHandler(SimpleXMLRPCDispatcher):
"""Simple handler for XML-RPC data passed through WSGI."""
def __init__(self, allow_none = False, encoding = None):
SimpleXMLRPCDispatcher.__init__(self, allow_none, encoding)
def __call__(self, environ, start_response):
"""Parse and handle a single XML-RPC request"""
result = []
method = environ['REQUEST_METHOD']
headers = [('Content-type', 'text/html')]
if method != 'POST':
# Default implementation indicates an error because XML-RPC uses the POST method.
code = 400
message, explain = BaseHTTPServer.BaseHTTPRequestHandler.responses[code]
status = '%d %s' % (code, message)
if method == 'HEAD':
response = ''
else:
response = BaseHTTPServer.DEFAULT_ERROR_MESSAGE % {'code' : code, 'message' : message, 'explain' : explain}
else:
# Dispatch XML-RPC to implementation
status = '200 OK'
request = environ['wsgi.input'].read(int(environ['CONTENT_LENGTH']))
response = self._marshaled_dispatch(request)
length = len(response)
if length > 0:
result = [response]
headers.append(('Content-length', str(length)))
start_response(status, headers)
return result
Take a look at this Hope it'll help.
Related
I am trying to extract the content of the [Documentation] section as a string for comparision with other part in a Python script.
I was told to use Robot framework API https://robot-framework.readthedocs.io/en/stable/
to extract but I have no idea how.
However, I am required to work with version 3.1.2
Example:
*** Test Cases ***
ATC Verify that Sensor Battery can enable and disable manufacturing mode
[Documentation] E1: This is the description of the test 1
... E2: This is the description of the test 2
[Tags] E1 TRACE{Trace_of_E1}
... E2 TRACE{Trace_of_E2}
Extract the string as
E1: This is the description of the test 1
E2: This is the description of the test 2
Have a look at these examples. I did something similar to generate testplans descritio. I tried to adapt my code to your requirements and this could maybe work for you.
import os
import re
from robot.api.parsing import (
get_model, get_tokens, Documentation, EmptyLine, KeywordCall,
ModelVisitor, Token
)
class RobotParser(ModelVisitor):
def __init__(self):
# Create object with remarkup_text to store formated documentation
self.text = ''
def get_text(self):
return self.text
def visit_TestCase(self, node):
# The matched `TestCase` node is a block with `header` and
# `body` attributes. `header` is a statement with familiar
# `get_token` and `get_value` methods for getting certain
# tokens or their value.
for keyword in node.body:
# skip empty lines
if keyword.get_value(Token.DOCUMENTATION) == None:
continue
self.text += keyword.get_value(Token.ARGUMENT)
def visit_Documentation(self,node):
# The matched "Documentation" node with value
self.remarkup_text += node.value + self.new_line
def visit_File(self, node):
# Call `generic_visit` to visit also child nodes.
return self.generic_visit(node)
if __name__ == "__main__":
path = "../tests"
for filename in os.listdir(path):
if re.match(".*\.robot", filename):
model = get_model(os.path.join(path, filename))
robot_parser = RobotParser()
robot_parser.visit(model)
text=robot_parser._text()
The code marked as best answer didn't quite work for me and has a lot of redundancy but it inspired me enough to get into the parsing and write it in a much readable and efficient way that actually works as is. You just have to have your own way of generating & iterating through filesystem where you call the get_robot_metadata(filepath) function.
from robot.api.parsing import (get_model, ModelVisitor, Token)
class RobotParser(ModelVisitor):
def __init__(self):
self.testcases = {}
def visit_TestCase(self, node):
testcasename = (node.header.name)
self.testcases[testcasename] = {}
for section in node.body:
if section.get_value(Token.DOCUMENTATION) != None:
documentation = section.value
self.testcases[testcasename]['Documentation'] = documentation
elif section.get_value(Token.TAGS) != None:
tags = section.values
self.testcases[testcasename]['Tags'] = tags
def get_testcases(self):
return self.testcases
def get_robot_metadata(filepath):
if filepath.endswith('.robot'):
robot_parser = RobotParser()
model = get_model(filepath)
robot_parser.visit(model)
metadata = robot_parser.get_testcases()
return metadata
This function will be able to extract the [Documentation] section from the testcase:
def documentation_extractor(testcase):
documentation = []
for setting in testcase.settings:
if len(setting) > 2 and setting[1].lower() == "[documentation]":
for doc in setting[2:]:
if doc.startswith("#"):
# the start of a comment, so skip rest of the line
break
documentation.append(doc)
break
return "\n".join(documentation)
I have a question about using apollo-upload-client and graphene-django. Here I've discovered that apollo-upload-client adding operations to formData. But here graphene-django is only trying to get query parameter. And the question is, where and how it should be fixed?
If you're referring to the data that has a header like (when viewing the HTTP from Chrome tools):
Content-Disposition: form-data; name="operations"
and data like
{"operationName":"MyMutation","variables":{"myData"....}, "query":"mutation MyMutation"...},
the graphene-python library interprets this and assembles it into a query for you, inserting the variables and removing the file data from the query. If you are using Django, you can find all of the uploaded files in info.context.FILES when writing a mutation.
Here's my solution to support the latest apollo-upload-client (8.1). I recently had to revisit my Django code when I upgraded from apollo-upload-client 5.x to 8.x. Hope this helps.
Sorry I'm using an older graphene-django but hopefully you can update the mutation syntax to the latest.
Upload scalar type (passthrough, basically):
class Upload(Scalar):
'''A file upload'''
#staticmethod
def serialize(value):
raise Exception('File upload cannot be serialized')
#staticmethod
def parse_literal(node):
raise Exception('No such thing as a file upload literal')
#staticmethod
def parse_value(value):
return value
My upload mutation:
class UploadImage(relay.ClientIDMutation):
class Input:
image = graphene.Field(Upload, required=True)
success = graphene.Field(graphene.Boolean)
#classmethod
def mutate_and_get_payload(cls, input, context, info):
with NamedTemporaryFile(delete=False) as tmp:
for chunk in input['image'].chunks():
tmp.write(chunk)
image_file = tmp.name
# do something with image_file
return UploadImage(success=True)
The heavy lifting happens in a custom GraphQL view. Basically it injects the file object into the appropriate places in the variables map.
def maybe_int(s):
try:
return int(s)
except ValueError:
return s
class CustomGraphqlView(GraphQLView):
def parse_request_json(self, json_string):
try:
request_json = json.loads(json_string)
if self.batch:
assert isinstance(request_json,
list), ('Batch requests should receive a list, but received {}.').format(
repr(request_json))
assert len(request_json) > 0, ('Received an empty list in the batch request.')
else:
assert isinstance(request_json, dict), ('The received data is not a valid JSON query.')
return request_json
except AssertionError as e:
raise HttpError(HttpResponseBadRequest(str(e)))
except BaseException:
logger.exception('Invalid JSON')
raise HttpError(HttpResponseBadRequest('POST body sent invalid JSON.'))
def parse_body(self, request):
content_type = self.get_content_type(request)
if content_type == 'application/graphql':
return {'query': request.body.decode()}
elif content_type == 'application/json':
return self.parse_request_json(request.body.decode('utf-8'))
elif content_type in ['application/x-www-form-urlencoded', 'multipart/form-data']:
operations_json = request.POST.get('operations')
map_json = request.POST.get('map')
if operations_json and map_json:
operations = self.parse_request_json(operations_json)
map = self.parse_request_json(map_json)
for file_id, f in request.FILES.items():
for name in map[file_id]:
segments = [maybe_int(s) for s in name.split('.')]
cur = operations
while len(segments) > 1:
cur = cur[segments.pop(0)]
cur[segments.pop(0)] = f
logger.info('parse_body %s', operations)
return operations
else:
return request.POST
return {}
I want to get a channel's members' count but I don't know which method should I use?
I am not admin in that channel, I just want to get the count number.
EDIT:I am using main telegram api, not telegram Bot api
You can use getChatMembersCount method.
Use this method to get the number of members in a chat.
It worked for me :)
from telethon import TelegramClient, sync
from telethon.tl.functions.channels import GetFullChannelRequest
api_id = API ID
api_hash = 'API HASH'
client = TelegramClient('session_name', api_id, api_hash)
client.start()
if (client.is_user_authorized() == False):
phone_number = 'PHONE NUMBER'
client.send_code_request(phone_number)
myself = client.sign_in(phone_number, input('Enter code: '))
channel = client.get_entity('CHANNEL LINK')
members = client.get_participants(channel)
print(len(members))
It is possible to do it also through GetFullChannelRequest in telethon
async def main():
async with client_to_manage as client:
full_info = await client(GetFullChannelRequest(channel="moscowproc"))
print(f"count: {full_info.full_chat.participants_count}")
if __name__ == '__main__':
client_to_manage.loop.run_until_complete(main())
or to write it without async/await
def main():
with client_to_manage as client:
full_info = client.loop.run_until_complete(client(GetFullChannelRequest(channel="moscowproc")))
print(f"count: {full_info.full_chat.participants_count}")
if __name__ == '__main__':
main()
Also as above was said, it is also feasible by bot-api with
getChatMembersCount method. You can curl it or use python to query needed url
with python code can look like this one:
import json
from urllib.request import urlopen
url ="https://api.telegram.org/bot<your-bot-api-token>/getChatMembersCount?chat_id=#<channel-name>"
with urlopen(url) as f:
resp = json.load(f)
print(resp['result'])
where <your-bot-api-token> is token provided by BotFather, and <channel-name> is channel name which amount of subscribers you want to know (of course, everything without "<>")
to check firstly, simply curl it:
curl https://api.telegram.org/bot<your-bot-api-token>/getChatMembersCount?chat_id=#<channel-name>
I'm trying to replicate the following successful cURL operation with Grinder.
curl -X PUT -d "title=Here%27s+the+title&content=Here%27s+the+content&signature=myusername%3A3ad1117dab0ade17bdbd47cc8efd5b08" http://www.mysite.com/api
Here's my script:
from net.grinder.script import Test
from net.grinder.script.Grinder import grinder
from net.grinder.plugin.http import HTTPRequest
from HTTPClient import NVPair
import hashlib
test1 = Test(1, "Request resource")
request1 = HTTPRequest(url="http://www.mysite.com/api")
test1.record(request1)
log = grinder.logger.info
test1.record(log)
m = hashlib.md5()
class TestRunner:
def __call__(self):
params = [NVPair("title","Here's the title"),NVPair("content", "Here's the content")]
params.sort(key=lambda param: param.getName())
ps = ""
for param in params:
ps = ps + param.getValue() + ":"
ps = ps + "myapikey"
m.update(ps)
params.append(NVPair("signature", ("myusername:" + m.hexdigest())))
request1.setFormData(tuple(params))
result = request1.PUT()
The test runs okay, but it seems that my script doesn't actually send any of the params data to the API, and I can't work out why. There are no errors generated, but I get a 401 Unauthorized response from the API, indicating that a successful PUT request reached it, but obviously without a signature the request was rejected.
This isn't exactly an answer, more of a workaround that I came up with, that I've decided to post since this question hasn't yet received any responses, and it may help anyone else trying to achieve the same thing.
The workaround is basically to use the httplib and urllib modules to build and make the PUT request instead of the HTTPClient module.
import hashlib
import httplib, urllib
....
params = [("title", "Here's the title"),("content", "Here's the content")]
params.sort(key=lambda param: param[0])
ps = ""
for param in params:
ps = ps + param[1] + ":"
ps = ps + "myapikey"
m = hashlib.md5()
m.update(ps)
params.append(("signature", "myusername:" + m.hexdigest()))
params = urllib.urlencode(params)
print params
headers = {"Content-type": "application/x-www-form-urlencoded"}
conn = httplib.HTTPConnection("www.mysite.com:80")
conn.request("PUT", "/api", params, headers)
response = conn.getresponse()
print response.status, response.reason
print response.read()
conn.close()
(Based on the example at the bottom of this documentation page.)
You have to refer to the multi-form posting example in Grinder script gallery, but changing the Post to Put. It works for me.
files = ( NVPair("self", "form.py"), )
parameters = ( NVPair("run number", str(grinder.runNumber)), )
# This is the Jython way of creating an NVPair[] Java array
# with one element.
headers = zeros(1, NVPair)
# Create a multi-part form encoded byte array.
data = Codecs.mpFormDataEncode(parameters, files, headers)
grinder.logger.output("Content type set to %s" % headers[0].value)
# Call the version of POST that takes a byte array.
result = request1.PUT("/upload", data, headers)
I have developed numerous iOS apps over the years so know Objective C reasonably well.
I'd like to build my first web service to offload some of the most processor intensive functions.
I'm leaning towards using my Mac as the server, which comes with Apache. I have configured this and it appears to be working as it should (I can type the Mac's IP address and receive a confirmation).
Now I'm trying to decide on how to build the server-side web service, which is totally new to me. I'd like to leverage my Objective C knowledge if possible. I think I'm looking for an Objective C-compatible web service engine and some examples how to connect it to browsers and mobile interfaces. I was leaning towards using Amazon's SimpleDB as the database.
BTW: I see Apple have Lion Server, but I cannot work out if this is an option.
Any thoughts/recommendations are appreciated.?
There are examples of simple web servers out there written in ObjC such as this and this.
That said, there are probably "better" ways of doing this if you don't mind using other technologies. This is a matter of preference; but I've use Python, MySQL, and the excellent web.py framework for these sorts of backends.
For example, here's an example web service (some redundancies omitted...) using the combination of technologies described. I just run this on my server, and it takes care of url redirection and serves JSON from the db.
import web
import json
import MySQLdb
urls = (
"/equip/gruppo", "gruppo", # GET = get all gruppos, # POST = save gruppo
"/equip/frame", "frame"
)
class StatusCode:
(Success,SuccessNoRows,FailConnect,FailQuery,FailMissingParam,FailOther) = range(6);
# top-level class that handles db interaction
class APIObject:
def __init__(self):
self.object_dict = {} # top-level dictionary to be turned into JSON
self.rows = []
self.cursor = ""
self.conn = ""
def dbConnect(self):
try:
self.conn = MySQLdb.connect( host = 'localhost', user = 'my_api_user', passwd = 'api_user_pw', db = 'my_db')
self.cursor = self.conn.cursor(MySQLdb.cursors.DictCursor)
except:
self.object_dict['api_status'] = StatusCode.FailConnect
return False
else:
return True
def queryExecute(self,query):
try:
self.cursor.execute(query)
self.rows = self.cursor.fetchall()
except:
self.object_dict['api_status'] = StatusCode.FailQuery
return False
else:
return True
class gruppo(APIObject):
def GET(self):
web.header('Content-Type', 'application/json')
if self.dbConnect() == False:
return json.dumps(self.object_dict,sort_keys=True, indent=4)
else:
if self.queryExecute("SELECT * FROM gruppos") == False:
return json.dumps(self.object_dict,sort_keys=True, indent=4)
else:
self.object_dict['api_status'] = StatusCode.SuccessNoRows if self.rows.count == 0 else StatusCode.Success
data_list = []
for row in self.rows:
# create a dictionary with the required elements
d = {}
d['id'] = row['id']
d['maker'] = row['maker_name']
d['type'] = row['type_name']
# append to the object list
data_list.append(d)
self.object_dict['data'] = data_list
# return to the client
return json.dumps(self.object_dict,sort_keys=True, indent=4)