working on error handling

freqtrade/aws/backtesting_lambda.py

@@ -56,6 +56,7 @@ def backtest(event, context):
                 )
 
                 print(response)
+                try:
                     if "Items" in response and len(response['Items']) > 0:
 
                         today = datetime.datetime.today()
@@ -103,16 +104,10 @@ def backtest(event, context):
 
                         }
 
-                    print("generated configuration")
-                    print(configuration)
-
                         print("initialized backtesting")
                         backtesting = Backtesting(configuration)
                         result = backtesting.start()
                         print("finished test")
-
-                    print("persist data in dynamo")
-
                         print(result)
                         result_data = []
                         for index, row in result.iterrows():
@@ -140,8 +135,18 @@ def backtest(event, context):
                             "body": json.dumps(result_data)
                         }
                     else:
-                    raise Exception(
-                        "sorry we did not find any matching strategy for user {} and name {}".format(user, name))
+                        return {
+                            "statusCode": 404,
+                            "body": json.dumps({
+                                "error": "sorry we did not find any matching strategy for user {} and name {}".format(
+                                    user, name)})
+                        }
+
+                except ImportError as e:
+                    return {
+                        "statusCode": 500,
+                        "body": json.dumps({"error": e})
+                    }
     else:
         raise Exception("not a valid event: {}".format(event))
 

serverless.yml

@@ -40,6 +40,12 @@ provider:
   deploymentBucket:
     name: lambdas-freq
 
+  # limit the invocations a bit to avoid overloading the server
+  usagePlan:
+    throttle:
+      burstLimit: 100
+      rateLimit: 50
+
 ############################################################################################
 #custom configuration settings
 ############################################################################################
@@ -230,9 +236,11 @@ functions:
 
     events:
       - schedule:
-          rate: rate(10 minutes)
+          rate: rate(1440 minutes)
+          enabled: false
+      - schedule:
+          rate: rate(5 minutes)
           enabled: true
-
     environment:
       topic: ${self:custom.snsTopic}
       tradeTable: ${self:custom.tradeTable}