AWS Lambda scheduled event source via cloudformation

Question

I already have my lambda / roles defined in cloudformation and would love to also use it to add a scheduled eventsources ... are there any docs or examples around ?

Answer 1

Use Aws::Event::Rule with a ScheduleExpression and a AWS::Lambda::Permission

// rule to periodically call the lambda "TagWatcherRule": {   "Type": "AWS::Events::Rule",   "Properties": {     "ScheduleExpression": "rate(10 minutes)",     "Targets": [       {         "Id": "TagWatcherScheduler",         "Arn": {           "Fn::GetAtt": [             "TagWatcherFunction",             "Arn"           ]         }       }     ]   } }, // role may call the lambda "InvokeLambdaPermission": {   "Type": "AWS::Lambda::Permission",   "Properties": {     "FunctionName": {       "Fn::GetAtt": [         "TagWatcherFunction",         "Arn"       ]     },     "Action": "lambda:InvokeFunction",     "Principal": "events.amazonaws.com",     "SourceArn": {       "Fn::GetAtt": [         "TagWatcherRule",         "Arn"       ]     }   } }