Add Amazon MQ event structure (#346)

* Add Amazon MQ event structure

* Formatted

* apply not-enforced naming conventions

* EventSourceArn -> EventSourceARN
* Destination -> ActiveMQDestination

Co-authored-by: Bryan Moffatt <bmoffatt@users.noreply.github.com>
Co-authored-by: Bryan Moffatt <moffattb@amazon.com>

events/activemq.go

@@ -0,0 +1,30 @@
+// Copyright 2020 Amazon.com, Inc. or its affiliates. All Rights Reserved.
+
+package events
+
+type ActiveMQEvent struct {
+	EventSource    string            `json:"eventSource"`
+	EventSourceARN string            `json:"eventSourceArn"`
+	Messages       []ActiveMQMessage `json:"messages"`
+}
+
+type ActiveMQMessage struct {
+	MessageID     string              `json:"messageID"`
+	MessageType   string              `json:"messageType"`
+	Timestamp     int64               `json:"timestamp"`
+	DeliveryMode  int                 `json:"deliveryMode"`
+	CorrelationID string              `json:"correlationID"`
+	ReplyTo       string              `json:"replyTo"`
+	Destination   ActiveMQDestination `json:"destination"`
+	Redelivered   bool                `json:"redelivered"`
+	Type          string              `json:"type"`
+	Expiration    int64               `json:"expiration"`
+	Priority      int                 `json:"priority"`
+	Data          string              `json:"data"`
+	BrokerInTime  int64               `json:"brokerInTime"`
+	BrokerOutTime int64               `json:"brokerOutTime"`
+}
+
+type ActiveMQDestination struct {
+	PhysicalName string `json:"physicalName"`
+}

events/activemq_test.go

@@ -0,0 +1,46 @@
+// Copyright 2020 Amazon.com, Inc. or its affiliates. All Rights Reserved.
+package events
+
+import (
+	"encoding/json"
+	"testing"
+
+	"github.com/aws/aws-lambda-go/events/test"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestActiveMQEventMarshaling(t *testing.T) {
+	// 1. read JSON from file
+	inputJson := test.ReadJSONFromFile(t, "./testdata/activemq-event.json")
+
+	// 2. de-serialize into Go object
+	var inputEvent ActiveMQEvent
+	if err := json.Unmarshal(inputJson, &inputEvent); err != nil {
+		t.Errorf("could not unmarshal event. details: %v", err)
+	}
+
+	// 3. Verify values populated into Go Object, at least one validation per data type
+	assert.Equal(t, "aws:mq", inputEvent.EventSource)
+	assert.Equal(t, "arn:aws:mq:us-west-2:533019413397:broker:shask-test:b-0f5b7522-2b41-4f85-a615-735a4e6d96b5", inputEvent.EventSourceARN)
+	assert.Equal(t, 1, len(inputEvent.Messages))
+
+	var message = inputEvent.Messages[0]
+	assert.Equal(t, "jms/text-message", message.MessageType)
+	assert.Equal(t, int64(1599863938941), message.Timestamp)
+	assert.Equal(t, 1, message.DeliveryMode)
+	assert.Equal(t, "testQueue", message.Destination.PhysicalName)
+	assert.Equal(t, false, message.Redelivered)
+
+	// 4. serialize to JSON
+	outputJson, err := json.Marshal(inputEvent)
+	if err != nil {
+		t.Errorf("could not marshal event. details: %v", err)
+	}
+
+	// 5. check result
+	assert.JSONEq(t, string(inputJson), string(outputJson))
+}
+
+func TestActiveMQMarshalingMalformedJson(t *testing.T) {
+	test.TestMalformedJson(t, ActiveMQEvent{})
+}

events/testdata/activemq-event.json

@@ -0,0 +1,24 @@
+{
+    "eventSource": "aws:mq",
+    "eventSourceArn": "arn:aws:mq:us-west-2:533019413397:broker:shask-test:b-0f5b7522-2b41-4f85-a615-735a4e6d96b5",
+    "messages": [
+        {
+            "messageID": "ID:b-0f5b7522-2b41-4f85-a615-735a4e6d96b5-2.mq.us-west-2.amazonaws.com-34859-1598944546501-4:12:1:1:3",
+            "messageType": "jms/text-message",
+            "timestamp": 1599863938941,
+            "deliveryMode": 1,
+            "correlationID": "",
+            "replyTo": "null",
+            "destination": {
+                "physicalName": "testQueue"
+            },
+            "redelivered": false,
+            "type": "",
+            "expiration": 0,
+            "priority": 0,
+            "data": "RW50ZXIgc29tZSB0ZXh0IGhlcmUgZm9yIHRoZSBtZXNzYWdlIGJvZHkuLi4=",
+            "brokerInTime": 1599863938943,
+            "brokerOutTime": 1599863938944
+        }
+    ]
+}