Added Get File Descriptor keyword

A new keyword allow to pass file descriptor to python requests,
which allows to read a binary file directly without loading it into memory

Signed-off-by: Vyacheslav Yurkov <Vyacheslav.Yurkov@bruker.com>

src/RequestsLibrary/RequestsKeywords.py

@@ -1,6 +1,7 @@
 import json
 import copy
 import sys
+import io
 
 import requests
 from requests.models import Response
@@ -668,7 +669,7 @@ def post_request(
         ``timeout`` connection timeout
         """
         session = self._cache.switch(alias)
-        if not files:
+        if not files and not isinstance(data, io.IOBase):
             data = utils.format_data_according_to_header(session, data, headers)
         redir = True if allow_redirects is None else allow_redirects
 
@@ -945,6 +946,10 @@ def _common_request(
 
         return resp
 
+    @staticmethod
+    def get_file_descriptor(path):
+        return open(path, 'rb')
+
     @staticmethod
     def _check_status(expected_status, resp, msg=None):
         """

src/RequestsLibrary/log.py

@@ -1,3 +1,4 @@
+import io
 from robot.api import logger
 
 from RequestsLibrary import utils
@@ -28,9 +29,13 @@ def log_request(
     args.pop('session', None)
     # This will log specific headers merged with session defined headers
     merged_headers = utils.merge_headers(session, args.pop('headers', None))
-    formatted_data = utils.format_data_to_log_string_according_to_headers(session,
+    if not isinstance(args['data'], io.IOBase):
+        formatted_data = utils.format_data_to_log_string_according_to_headers(session,
                                                                           args.pop('data', None),
                                                                           merged_headers)
+    else:
+        formatted_data = ""
+
     formatted_json = args.pop('json', None)
     method_log = '%s Request using : ' % method.upper()
     uri_log = 'uri=%s' % uri

tests/base64Decode.py

@@ -0,0 +1,7 @@
+import base64
+
+def base64_decode_data(s):
+    # We expect base64 string retrieved from json.data(), which also includes
+    # MIME headers in a form "data:application/octet-stream;base64,<ACTUAL BASE64 DATA>"
+    # Therefore we strip the headers and decode the actual data
+    return base64.b64decode(s.split(',')[1])

tests/testcase.robot

@@ -4,6 +4,7 @@ Library  String
 Library  ../src/RequestsLibrary/RequestsKeywords.py
 Library  OperatingSystem
 Library  customAuthenticator.py
+Library  base64Decode.py
 Resource  res_setup.robot
 
 Suite Setup     Setup Flask Http Server
@@ -194,6 +195,18 @@ Post Request With Arbitrary Binary Data
     ${resp}=  Post Request  httpbin  /post  data=${data}  headers=&{headers}
     # TODO Compare binaries. Content is json with base64 encoded data
     Log    "Success"
+    ${receivedData}=  Base64 Decode Data  ${resp.json()['data']}
+    Should Be Equal  ${receivedData}  ${data}
+
+Post Request With File Descriptor
+    [Tags]  post
+    Create Session  httpbin  http://httpbin.org    debug=3
+    ${handle}=  Get File Descriptor  ${CURDIR}${/}randombytes.bin
+    &{headers}=  Create Dictionary  Content-Type=application/octet-stream   Accept=application/octet-stream
+    ${resp}=  Post Request  httpbin  /post  data=${handle}  headers=&{headers}
+    ${receivedData}=  Base64 Decode Data  ${resp.json()['data']}
+    ${data}=  Get Binary File  ${CURDIR}${/}randombytes.bin
+    Should Be Equal  ${receivedData}  ${data}
 
 Post Request With File
     [Tags]  post