Added the ability to set constants when scheduling a Lambda function Cloudwatch event. (#380)

* Added the ability to set constants when scheduling a Lambda function Cloudwatch event.

* Remove unnecessary space

* Modify example JSON key name

* Set default value when key does not exist

* Update unit test

Author: abetomo

lib/event_sources.json.example

@@ -11,7 +11,12 @@
     {
       "ScheduleName": "node-lambda-test-schedule",
       "ScheduleState": "ENABLED",
-      "ScheduleExpression": "rate(1 hour)"
+      "ScheduleExpression": "rate(1 hour)",
+      "Input":
+        {
+          "key1": "value",
+          "key2": "value"
+        }
     }
   ]
 }

lib/schedule_events.js

@@ -71,7 +71,8 @@ class ScheduleEvents {
       Rule: params.ScheduleName,
       Targets: [{
         Arn: params.FunctionArn,
-        Id: this._functionName(params)
+        Id: this._functionName(params),
+        Input: params.hasOwnProperty('Input') ? JSON.stringify(params.Input) : ''
       }]
     }
   }

test/main.js

@@ -840,7 +840,11 @@ describe('lib/main', function () {
             ScheduleEvents: [{
               ScheduleName: 'node-lambda-test-schedule',
               ScheduleState: 'ENABLED',
-              ScheduleExpression: 'rate(1 hour)'
+              ScheduleExpression: 'rate(1 hour)',
+              Input: {
+                key1: 'value',
+                key2: 'value'
+              }
             }]
           }
           assert.deepEqual(lambda._eventSourceList(program), expected)

test/schedule_events.js

@@ -121,16 +121,32 @@ describe('lib/schedule_events', () => {
   })
 
   describe('_putTargetsParams', () => {
-    it('correct value', () => {
+    it('correct value (No "Input" setting)', () => {
       const expected = {
         Rule: 'node-lambda-test-schedule',
         Targets: [{
           Arn: 'arn:aws:lambda:us-west-2:XXX:function:node-lambda-test-function',
-          Id: 'node-lambda-test-function'
+          Id: 'node-lambda-test-function',
+          Input: ''
         }]
       }
       assert.deepEqual(schedule._putTargetsParams(params), expected)
     })
+
+    it('correct value ("Input" setting)', () => {
+      const expected = {
+        Rule: 'node-lambda-test-schedule',
+        Targets: [{
+          Arn: 'arn:aws:lambda:us-west-2:XXX:function:node-lambda-test-function',
+          Id: 'node-lambda-test-function',
+          Input: '{"key":"value"}'
+        }]
+      }
+      assert.deepEqual(
+        schedule._putTargetsParams(Object.assign({Input: {key: 'value'}}, params)),
+        expected
+      )
+    })
   })
 
   describe('_putRule', () => {