added robustness

Author: ProjectsByJackHe

react-frontend/src/components/userinput.tsx

@@ -46,7 +46,7 @@ const UserInput = (props: any) => {
     try {
       // send HTTP request to flask server and store
       // response inside callTrace
-      const domain = "<BACKEND URL REMOTE CODE RUNNER>";
+      const domain = "https://recursion0r94s8df984.herokuapp.com";
 
       const options = `/execute?funcName=${functionName}&funcCall=${functionCall[0]}`;
       const fetchConfig = {

remote-code-runner/app.py

@@ -39,7 +39,6 @@ def execute():
             # case of invalid value
             # set reponse status to 400
             return functionTrace[1], 400
-        return inputCode
     else: 
         # case of an invalid request
         return "Please specify both the function name and the initial function call."

remote-code-runner/judge.py

@@ -1,6 +1,7 @@
 import os
 import requests
 import json 
+import time 
 
 API_KEY = os.environ.get('API_KEY')
 
@@ -18,10 +19,11 @@ def sendCodeToJudge(code):
     response = requests.request("POST", url, data=json.dumps(payload), headers=headers)
     responseObj = json.loads(response.text)
     if 'error' in responseObj: 
-        return 'error'
+        return False
     if 'token' not in responseObj:
-        return 'error'
+        return False
     token = responseObj['token']
+    time.sleep(2) # wait 2 seconds before retrieving results
     URL = "https://judge0.p.rapidapi.com/submissions/" + token
     HEADERS = {
         'x-rapidapi-host': "judge0.p.rapidapi.com",
@@ -30,5 +32,4 @@ def sendCodeToJudge(code):
     subResponse = requests.request("GET", URL, headers=HEADERS)
     codeSubmissionResponse = json.loads(subResponse.text) 
     print(codeSubmissionResponse)
-    output = codeSubmissionResponse['stdout']
-    return [output, token]
+    return [codeSubmissionResponse, token]

remote-code-runner/remoteCodeRunner.py

@@ -12,14 +12,24 @@ def runCode(inputCode, inputFunctionName, inputFunctionCall):
     # inputCode here is truncated to exclude the single function call. 
     readyToExe = ij.injectCode(inputCode, inputFunctionName, inputFunctionCall)
     res = j.sendCodeToJudge(readyToExe)
-    if res == 'error':
+    if res == False: # couldn't even POST the user's code
         return (False, "Be sure to follow all rules laid out in the instructions: Make sure there are no syntax errors, logic errors, and infinite recursions... and any funky business ;)")
 
-    if res[0] == None:
-        res[0] = tg.tryGet(res[1])
-
-    if res[0] == None:
-        return (False, "Took too long. I didn't pay for a premium server, sorry about that.")
+    codeSubmissionResults = res[0] # output object with stdout and stderr
+    submissionToken = res[1] # token reference ID
+    
+    # do processing checks first before doing error checks 
+    if codeSubmissionResults['status']['id'] < 3: 
+        # still processing...
+        codeSubmissionResults = tg.tryGet(submissionToken) 
 
-    output = res[0][1:len(res[0]) - 2]
-    return (True, output)
+    if codeSubmissionResults['status']['id'] == 3:
+        # success case
+        output = codeSubmissionResults['stdout'][1:len(codeSubmissionResults['stdout']) - 2]
+        return (True, output)
+    else: 
+        # error case
+        if codeSubmissionResults['stderr']:
+            return (False, codeSubmissionResults['stderr'])
+        else: 
+            return (False, "Unknown error.")

remote-code-runner/tryget.py

@@ -3,19 +3,21 @@
 import requests
 import json 
 
-
 API_KEY = os.environ.get('API_KEY') 
 
 def tryGet(token):
-    time.sleep(10)
     URL = "https://judge0.p.rapidapi.com/submissions/" + token
     HEADERS = {
         'x-rapidapi-host': "judge0.p.rapidapi.com",
         'x-rapidapi-key': API_KEY
     }
     subResponse = requests.request("GET", URL, headers=HEADERS)
     codeSubmissionResponse = json.loads(subResponse.text) 
-    print('tried again... ')
-    print(codeSubmissionResponse)
-    output = codeSubmissionResponse['stdout']
-    return output
+    retryNumber = 1
+    while codeSubmissionResponse['status']['id'] < 3: 
+        time.sleep(2) # wait 2 seconds before trying again
+        codeSubmissionResponse = requests.request("GET", URL, headers=HEADERS)
+        print("retryNumber " + str(i)) 
+        print(codeSubmissionResponse) 
+        i += 1
+    return codeSubmissionResponse