mirror of
https://github.com/Telecominfraproject/wlan-lanforge-scripts.git
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f60f0055be
print_diagnostics extracts X-Error headers first LFRequest can track errors in self.error_list LFReuqest can print errors Classes lf lfcli_base calling lfrequest.get_as_json() can expose 404 or other errors using lfrequest.print_errors() Signed-off-by: Jed Reynolds <jed@candelatech.com>
416 lines
17 KiB
Python
416 lines
17 KiB
Python
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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# Class holds default settings for json requests -
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# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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import sys
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if sys.version_info[0] != 3:
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print("This script requires Python 3")
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exit()
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import urllib
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from urllib import request
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from urllib import error
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from urllib import parse
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import json
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from LANforge import LFUtils
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class LFRequest:
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Default_Base_URL = "http://localhost:8080"
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No_Data = {'No Data':0}
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requested_url = ""
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post_data = No_Data
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default_headers = { 'Accept': 'application/json'}
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proxies = None
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def __init__(self, url=None,
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uri=None,
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proxies_=None,
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debug_=False,
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die_on_error_=False):
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self.debug = debug_
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self.die_on_error = die_on_error_
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self.error_list = []
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# please see this discussion on ProxyHandlers:
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# https://docs.python.org/3/library/urllib.request.html#urllib.request.ProxyHandler
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# but this makes much more sense:
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# https://gist.github.com/aleiphoenix/4159510
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# if debug_:
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# if proxies_ is None:
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# print("LFRequest_init_: no proxies_")
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# else:
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# print("LFRequest: proxies_: ")
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# pprint.pprint(proxies_)
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if (proxies_ is not None) and (len(proxies_) > 0):
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if ("http" not in proxies_) and ("https" not in proxies_):
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raise ValueError("Neither http or https set in proxy definitions. Expects proxy={'http':, 'https':, }")
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self.proxies = proxies_
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# if debug_:
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# if self.proxies is None:
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# print("LFRequest_init_: no proxies")
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# else:
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# print("LFRequest: proxies: ")
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# pprint.pprint(self.proxies)
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if not url.startswith("http://") and not url.startswith("https://"):
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print("No http:// or https:// found, prepending http:// to "+url)
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url = "http://" + url
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if uri is not None:
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if not url.endswith('/') and not uri.startswith('/'):
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url += '/'
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self.requested_url = url + uri
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else:
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self.requested_url = url
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if self.requested_url is None:
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raise Exception("Bad LFRequest of url[%s] uri[%s] -> None" % (url, uri))
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if self.requested_url.find('//'):
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protopos = self.requested_url.find("://")
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self.requested_url = self.requested_url[:protopos + 2] + self.requested_url[protopos + 2:].replace("//", "/")
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# finding '#' prolly indicates a macvlan (eth1#0)
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# finding ' ' prolly indicates a field name that should imply %20
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if (self.requested_url.find('#') >= 1):
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self.requested_url = self.requested_url.replace('#', '%23')
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if (self.requested_url.find(' ') >= 1):
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self.requested_url = self.requested_url.replace(' ', '+')
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if self.debug:
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print("new LFRequest[%s]" % self.requested_url )
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# request first url on stack
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def formPost(self, show_error=True, debug=False, die_on_error_=False):
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return self.form_post(show_error=show_error, debug=debug, die_on_error_=die_on_error_)
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def form_post(self, show_error=True, debug=False, die_on_error_=False):
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if self.die_on_error:
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die_on_error_ = True
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if (debug == False) and (self.debug == True):
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debug = True
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responses = []
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urlenc_data = ""
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# https://stackoverflow.com/a/59635684/11014343
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if (self.proxies is not None) and (len(self.proxies) > 0):
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# https://stackoverflow.com/a/59635684/11014343
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opener = request.build_opener(request.ProxyHandler(self.proxies))
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request.install_opener(opener)
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if (debug):
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print("formPost: url: "+self.requested_url)
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if ((self.post_data != None) and (self.post_data is not self.No_Data)):
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urlenc_data = urllib.parse.urlencode(self.post_data).encode("utf-8")
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if (debug):
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print("formPost: data looks like:" + str(urlenc_data))
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print("formPost: url: "+self.requested_url)
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myrequest = request.Request(url=self.requested_url,
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data=urlenc_data,
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headers=self.default_headers)
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else:
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myrequest = request.Request(url=self.requested_url, headers=self.default_headers)
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print("No data for this formPost?")
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myrequest.headers['Content-type'] = 'application/x-www-form-urlencoded'
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resp = ''
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try:
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resp = urllib.request.urlopen(myrequest)
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responses.append(resp)
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return responses[0]
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except urllib.error.HTTPError as error:
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print_diagnostics(url_=self.requested_url,
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request_=request,
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responses_=responses,
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error_=error,
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error_list_=self.error_list,
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debug_=debug)
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except urllib.error.URLError as uerror:
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print_diagnostics(url_=self.requested_url,
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request_=request,
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responses_=responses,
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error_=uerror,
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error_list_=self.error_list,
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debug_=debug)
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if (die_on_error_ == True) or (self.die_on_error == True):
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exit(1)
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return None
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def jsonPost(self, show_error=True, debug=False, die_on_error_=False, response_json_list_=None):
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return self.json_post(show_error=show_error, debug=debug, die_on_error_=die_on_error_, response_json_list_=response_json_list_)
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def json_post(self, show_error=True, debug=False, die_on_error_=False, response_json_list_=None, method_='POST'):
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if (debug == False) and (self.debug == True):
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debug = True
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if self.die_on_error:
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die_on_error_ = True
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responses = []
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if (self.proxies is not None) and (len(self.proxies) > 0):
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opener = request.build_opener(request.ProxyHandler(self.proxies))
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request.install_opener(opener)
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if ((self.post_data != None) and (self.post_data is not self.No_Data)):
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myrequest = request.Request(url=self.requested_url,
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method=method_,
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data=json.dumps(self.post_data).encode("utf-8"),
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headers=self.default_headers)
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else:
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myrequest = request.Request(url=self.requested_url, headers=self.default_headers)
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print("No data for this jsonPost?")
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myrequest.headers['Content-type'] = 'application/json'
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# https://stackoverflow.com/a/59635684/11014343
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try:
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resp = request.urlopen(myrequest)
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resp_data = resp.read().decode('utf-8')
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if (debug and die_on_error_):
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print("----- LFRequest::json_post:128 debug: --------------------------------------------")
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print("URL: %s :%d "% (self.requested_url, resp.status))
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if resp.status != 200:
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LFUtils.debug_printer.pprint(resp.getheaders())
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print("----- resp_data:128 -------------------------------------------------")
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print(resp_data)
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print("-------------------------------------------------")
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responses.append(resp)
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if response_json_list_ is not None:
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if type(response_json_list_) is not list:
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raise ValueError("reponse_json_list_ needs to be type list")
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j = json.loads(resp_data)
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if debug:
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print("----- LFRequest::json_post:140 debug: --------------------------------------------")
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LFUtils.debug_printer.pprint(j)
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print("-------------------------------------------------")
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response_json_list_.append(j)
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return responses[0]
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except urllib.error.HTTPError as error:
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print_diagnostics(url_=self.requested_url,
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request_=request,
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responses_=responses,
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error_=error,
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debug_=debug)
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except urllib.error.URLError as uerror:
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print_diagnostics(url_=self.requested_url,
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request_=request,
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responses_=responses,
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error_=uerror,
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debug_=debug)
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if die_on_error_ == True:
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exit(1)
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return None
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def json_put(self, show_error=True, debug=False, die_on_error_=False, response_json_list_=None):
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return self.json_post(show_error=show_error,
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debug=debug,
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die_on_error_=die_on_error_,
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response_json_list_=response_json_list_,
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method_='PUT')
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def json_delete(self, show_error=True, debug=False, die_on_error_=False, response_json_list_=None):
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return self.get_as_json(debug_=debug,
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die_on_error_=die_on_error_,
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method_='DELETE')
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def get(self, debug=False, die_on_error_=False, method_='GET'):
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if self.debug == True:
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debug = True
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if self.die_on_error == True:
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die_on_error_ = True
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if debug:
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print("LFUtils.get: url: "+self.requested_url)
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# https://stackoverflow.com/a/59635684/11014343
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if (self.proxies is not None) and (len(self.proxies) > 0):
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opener = request.build_opener(request.ProxyHandler(self.proxies))
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#opener = urllib.request.build_opener(myrequest.ProxyHandler(self.proxies))
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request.install_opener(opener)
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myrequest = request.Request(url=self.requested_url,
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headers=self.default_headers,
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method=method_)
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myresponses = []
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try:
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myresponses.append(request.urlopen(myrequest))
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return myresponses[0]
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except urllib.error.HTTPError as error:
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print_diagnostics(url_=self.requested_url,
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request_=myrequest,
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responses_=myresponses,
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error_=error,
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error_list_=self.error_list,
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debug_=debug)
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except urllib.error.URLError as uerror:
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print_diagnostics(url_=self.requested_url,
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request_=myrequest,
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responses_=myresponses,
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error_=uerror,
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error_list_=self.error_list,
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debug_=debug)
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if die_on_error_ == True:
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exit(1)
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return None
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def getAsJson(self, die_on_error_=False, debug_=False):
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return self.get_as_json(die_on_error_=die_on_error_, debug_=debug_)
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def get_as_json(self, die_on_error_=False, debug_=False, method_='GET'):
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responses = []
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j = self.get(debug=debug_, die_on_error_=die_on_error_, method_=method_)
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responses.append(j)
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if len(responses) < 1:
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if debug_ and self.has_errors():
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self.print_errors()
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return None
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if responses[0] == None:
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if debug_:
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print("No response from "+self.requested_url)
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return None
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json_data = json.loads(responses[0].read().decode('utf-8'))
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return json_data
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def addPostData(self, data):
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self.add_post_data(data=data)
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def add_post_data(self, data):
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self.post_data = data
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def has_errors(self):
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return (True, False)[len(self.error_list)>0]
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def print_errors(self):
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if not self.has_errors:
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print("---------- no errors ----------")
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return
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for err in self.error_list:
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print("error: %s" % err)
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def plain_get(url_=None, debug_=False, die_on_error_=False, proxies_=None):
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"""
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This static method does not respect LFRequest.proxy, it is not set in scope here
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:param url_:
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:param debug_:
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:param die_on_error_:
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:return:
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"""
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myrequest = request.Request(url=url_)
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myresponses = []
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try:
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if (proxies_ is not None) and (len(proxies_) > 0):
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# https://stackoverflow.com/a/59635684/11014343
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opener = myrequest.build_opener(myrequest.ProxyHandler(proxies_))
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myrequest.install_opener(opener)
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myresponses.append(request.urlopen(myrequest))
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return myresponses[0]
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except urllib.error.HTTPError as error:
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print_diagnostics(url_=url_,
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request_=request,
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responses_=myresponses,
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error_=error,
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debug_=debug_)
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except urllib.error.URLError as uerror:
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print_diagnostics(url_=url_,
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request_=request,
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responses_=myresponses,
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error_=uerror,
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debug_=debug_)
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if die_on_error_ == True:
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exit(1)
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return None
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def print_diagnostics(url_=None, request_=None, responses_=None, error_=None, error_list_=None, debug_=False):
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if debug_:
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print("LFRequest::print_diagnostics: error_.__class__: %s"%error_.__class__)
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LFUtils.debug_printer.pprint(error_)
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if url_ is None:
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print("WARNING LFRequest::print_diagnostics: url_ is None")
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if request_ is None:
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print("WARNING LFRequest::print_diagnostics: request_ is None")
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if error_ is None:
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print("WARNING LFRequest::print_diagnostics: error_ is None")
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err_code = 0
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err_reason = 'NA'
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err_headers = []
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err_full_url = url_
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if hasattr(error_, 'code'):
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err_code = error_.code
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if hasattr(error_, 'reason'):
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err_reason = error_.reason
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if hasattr(error_, 'headers'):
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err_headers = error_.headers
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if hasattr(error_, 'get_full_url'):
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err_full_url = error_.get_full_url()
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xerrors = []
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if err_code == 404:
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xerrors.append("[%s HTTP %s] <%s> : %s" % (request_.method, err_code, err_full_url, err_reason))
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else:
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if (len(err_headers) > 0):
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for headername in sorted(err_headers.keys()):
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if headername.startswith("X-Error-"):
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xerrors.append("%s: %s" % (headername, err_headers.get(headername)))
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if len(xerrors) > 0:
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print(" = = LANforge Error Messages = =")
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for xerr in xerrors:
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print(xerr)
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if (error_list_ is not None) and isinstance(error_list_, list):
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error_list_.append(xerr)
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print(" = = = = = = = = = = = = = = = =")
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if (error_.__class__ is urllib.error.HTTPError):
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if debug_:
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print("----- LFRequest: HTTPError: --------------------------------------------")
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print("%s <%s> HTTP %s: %s" % (request_.method, err_full_url, err_code, err_reason))
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if err_code == 404:
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if (error_list_ is not None) and isinstance(error_list_, list):
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error_list_.append("[%s HTTP %s] <%s> : %s" % (request_.method, err_code, err_full_url, err_reason))
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else:
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if debug_:
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print(" Content-type:[%s] Accept[%s]" % (request_.get_header('Content-type'), request_.get_header('Accept')))
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if hasattr(request_, "data") and (request_.data is not None):
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print(" Data:")
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LFUtils.debug_printer.pprint(request_.data)
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elif debug_:
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print(" <no request data>")
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if debug_ and (len(err_headers) > 0):
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# the HTTPError is of type HTTPMessage a subclass of email.message
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print(" Response Headers: ")
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for headername in sorted(err_headers.keys()):
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print(" %s: %s" % (headername, err_headers.get(headername)))
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if len(responses_) > 0:
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print("----- Response: --------------------------------------------------------")
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LFUtils.debug_printer.pprint(responses_[0].reason)
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if debug_:
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print("------------------------------------------------------------------------")
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return
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if (error_.__class__ is urllib.error.URLError):
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print("----- LFRequest: URLError: ---------------------------------------------")
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print("%s <%s> HTTP %s: %s" % (request_.method, err_full_url, err_code, err_reason))
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print("------------------------------------------------------------------------")
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# ~LFRequest
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