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Add DynamoDB and Kinesis Time Window events and response models
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7 files changed

+254
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lines changed

7 files changed

+254
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lines changed

‎events/dynamodb.go

Lines changed: 8 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -8,7 +8,14 @@ type DynamoDBEvent struct {
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Records []DynamoDBEventRecord `json:"Records"`
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}
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11-
// DynamoDbEventRecord stores information about each record of a DynamoDb stream event
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// DynamoDBTimeWindowEvent represents an Amazon Dynamodb event when using time windows
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// ref. https://docs.aws.amazon.com/lambda/latest/dg/with-ddb.html#services-ddb-windows
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type DynamoDBTimeWindowEvent struct {
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DynamoDBEvent
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TimeWindowProperties
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}
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// DynamoDBEventRecord stores information about each record of a DynamoDB stream event
1219
type DynamoDBEventRecord struct {
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// The region in which the GetRecords request was received.
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AWSRegion string `json:"awsRegion"`

‎events/dynamodb_test.go

Lines changed: 24 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -34,3 +34,27 @@ func TestDynamoDBEventMarshaling(t *testing.T) {
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func TestDynamoDBEventMarshalingMalformedJson(t *testing.T) {
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test.TestMalformedJson(t, DynamoDBEvent{})
3636
}
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func TestDynamoDBTimeWindowEventMarshaling(t *testing.T) {
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// 1. read JSON from file
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inputJSON := test.ReadJSONFromFile(t, "./testdata/dynamodb-time-window-event.json")
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// 2. de-serialize into Go object
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var inputEvent DynamoDBTimeWindowEvent
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if err := json.Unmarshal(inputJSON, &inputEvent); err != nil {
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t.Errorf("could not unmarshal event. details: %v", err)
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}
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// 3. serialize to JSON
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outputJSON, err := json.Marshal(inputEvent)
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if err != nil {
51+
t.Errorf("could not marshal event. details: %v", err)
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}
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// 4. check result
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assert.JSONEq(t, string(inputJSON), string(outputJSON))
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}
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func TestDynamoDBTimeWindowEventMarshalingMalformedJson(t *testing.T) {
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test.TestMalformedJson(t, DynamoDBTimeWindowEvent{})
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}

‎events/kinesis.go

Lines changed: 7 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -6,6 +6,13 @@ type KinesisEvent struct {
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Records []KinesisEventRecord `json:"Records"`
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}
88

9+
// KinesisTimeWindowEvent represents an Amazon Dynamodb event when using time windows
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// ref. https://docs.aws.amazon.com/lambda/latest/dg/with-kinesis.html#services-kinesis-windows
11+
type KinesisTimeWindowEvent struct {
12+
KinesisEvent
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TimeWindowProperties
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}
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916
type KinesisEventRecord struct {
1017
AwsRegion string `json:"awsRegion"` //nolint: stylecheck
1118
EventID string `json:"eventID"`

‎events/kinesis_test.go

Lines changed: 24 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -33,3 +33,27 @@ func TestKinesisEventMarshaling(t *testing.T) {
3333
func TestKinesisMarshalingMalformedJson(t *testing.T) {
3434
test.TestMalformedJson(t, KinesisEvent{})
3535
}
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func TestKinesisTimeWindowEventMarshaling(t *testing.T) {
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// 1. read JSON from file
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inputJSON := test.ReadJSONFromFile(t, "./testdata/kinesis-time-window-event.json")
40+
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// 2. de-serialize into Go object
42+
var inputEvent KinesisTimeWindowEvent
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if err := json.Unmarshal(inputJSON, &inputEvent); err != nil {
44+
t.Errorf("could not unmarshal event. details: %v", err)
45+
}
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// 3. serialize to JSON
48+
outputJSON, err := json.Marshal(inputEvent)
49+
if err != nil {
50+
t.Errorf("could not marshal event. details: %v", err)
51+
}
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// 4. check result
54+
assert.JSONEq(t, string(inputJSON), string(outputJSON))
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}
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func TestKinesisTimeWindowEventMarshalingMalformedJson(t *testing.T) {
58+
test.TestMalformedJson(t, KinesisTimeWindowEvent{})
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}

‎events/testdata/dynamodb-time-window-event.json

Lines changed: 104 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,104 @@
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{
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"Records":[
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{
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"eventID":"1",
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"eventName":"INSERT",
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"eventVersion":"1.0",
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"eventSource":"aws:dynamodb",
8+
"awsRegion":"us-east-1",
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"dynamodb":{
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"ApproximateCreationDateTime": 1480642020,
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"Keys":{
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"Id":{
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"N":"101"
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}
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},
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"NewImage":{
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"Message":{
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"S":"New item!"
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},
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"Id":{
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"N":"101"
22+
}
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},
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"SequenceNumber":"111",
25+
"SizeBytes":26,
26+
"StreamViewType":"NEW_AND_OLD_IMAGES"
27+
},
28+
"eventSourceARN":"stream-ARN"
29+
},
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{
31+
"eventID":"2",
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"eventName":"MODIFY",
33+
"eventVersion":"1.0",
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"eventSource":"aws:dynamodb",
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"awsRegion":"us-east-1",
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"dynamodb":{
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"ApproximateCreationDateTime": 1480642020,
38+
"Keys":{
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"Id":{
40+
"N":"101"
41+
}
42+
},
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"NewImage":{
44+
"Message":{
45+
"S":"This item has changed"
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},
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"Id":{
48+
"N":"101"
49+
}
50+
},
51+
"OldImage":{
52+
"Message":{
53+
"S":"New item!"
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},
55+
"Id":{
56+
"N":"101"
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}
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},
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"SequenceNumber":"222",
60+
"SizeBytes":59,
61+
"StreamViewType":"NEW_AND_OLD_IMAGES"
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},
63+
"eventSourceARN":"stream-ARN"
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},
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{
66+
"eventID":"3",
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"eventName":"REMOVE",
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"eventVersion":"1.0",
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"eventSource":"aws:dynamodb",
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"awsRegion":"us-east-1",
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"dynamodb":{
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"ApproximateCreationDateTime": 1480642020,
73+
"Keys":{
74+
"Id":{
75+
"N":"101"
76+
}
77+
},
78+
"OldImage":{
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"Message":{
80+
"S":"This item has changed"
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},
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"Id":{
83+
"N":"101"
84+
}
85+
},
86+
"SequenceNumber":"333",
87+
"SizeBytes":38,
88+
"StreamViewType":"NEW_AND_OLD_IMAGES"
89+
},
90+
"eventSourceARN":"stream-ARN"
91+
}
92+
],
93+
"window": {
94+
"start": "2020-07-30T17:00:00Z",
95+
"end": "2020-07-30T17:05:00Z"
96+
},
97+
"state": {
98+
"1": "state1"
99+
},
100+
"shardId": "shard123456789",
101+
"eventSourceARN": "stream-ARN",
102+
"isFinalInvokeForWindow": false,
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"isWindowTerminatedEarly": false
104+
}

‎events/testdata/kinesis-time-window-event.json

Lines changed: 33 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,33 @@
1+
2+
{
3+
"Records": [
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{
5+
"kinesis": {
6+
"kinesisSchemaVersion": "1.0",
7+
"partitionKey": "1",
8+
"sequenceNumber": "49590338271490256608559692538361571095921575989136588898",
9+
"data": "SGVsbG8sIHRoaXMgaXMgYSB0ZXN0Lg==",
10+
"approximateArrivalTimestamp": 1607497475.000
11+
},
12+
"eventSource": "aws:kinesis",
13+
"eventVersion": "1.0",
14+
"eventID": "shardId-000000000006:49590338271490256608559692538361571095921575989136588898",
15+
"eventName": "aws:kinesis:record",
16+
"invokeIdentityArn": "arn:aws:iam::123456789012:role/lambda-kinesis-role",
17+
"awsRegion": "us-east-1",
18+
"eventSourceARN": "arn:aws:kinesis:us-east-1:123456789012:stream/lambda-stream"
19+
}
20+
],
21+
"window": {
22+
"start": "2020-12-09T07:04:00Z",
23+
"end": "2020-12-09T07:06:00Z"
24+
},
25+
"state": {
26+
"1": "state 1",
27+
"2": "state 2"
28+
},
29+
"shardId": "shardId-000000000006",
30+
"eventSourceARN": "arn:aws:kinesis:us-east-1:123456789012:stream/lambda-stream",
31+
"isFinalInvokeForWindow": false,
32+
"isWindowTerminatedEarly": false
33+
}

‎events/time_window.go

Lines changed: 54 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,54 @@
1+
package events
2+
3+
// Window is the object that captures the time window for the records in the event when using the tumbling windows feature
4+
// Kinesis: https://docs.aws.amazon.com/lambda/latest/dg/with-kinesis.html#services-kinesis-windows
5+
// DDB: https://docs.aws.amazon.com/lambda/latest/dg/with-ddb.html#services-ddb-windows
6+
type Window struct {
7+
Start string `json:"start"`
8+
End string `json:"end"`
9+
}
10+
11+
// TimeWindowProperties is the object that captures properties that relate to the tumbling windows feature
12+
// Kinesis: https://docs.aws.amazon.com/lambda/latest/dg/with-kinesis.html#services-kinesis-windows
13+
// DDB: https://docs.aws.amazon.com/lambda/latest/dg/with-ddb.html#services-ddb-windows
14+
type TimeWindowProperties struct {
15+
// Time window for the records in the event.
16+
Window Window `json:"window"`
17+
18+
// State being built up to this invoke in the time window.
19+
State map[string]string `json:"state"`
20+
21+
// Shard id of the records
22+
ShardID string `json:"shardId"`
23+
24+
// Dynamodb stream arn.
25+
EventSourceArn string `json:"eventSourceARN"`
26+
27+
// Set to true for the last invoke of the time window.
28+
// Subsequent invoke will start a new time window along with a fresh state.
29+
IsFinalInvokeForWindow bool `json:"isFinalInvokeForWindow"`
30+
31+
// Set to true if window is terminated prematurely.
32+
// Subsequent invoke will continue the same window with a fresh state.
33+
IsWindowTerminatedEarly bool `json:"isWindowTerminatedEarly"`
34+
}
35+
36+
// TimeWindowEventResponseProperties is the object that captures response properties that relate to the tumbling windows feature
37+
// Kinesis: https://docs.aws.amazon.com/lambda/latest/dg/with-kinesis.html#services-kinesis-windows
38+
// DDB: https://docs.aws.amazon.com/lambda/latest/dg/with-ddb.html#services-ddb-windows
39+
type TimeWindowEventResponseProperties struct {
40+
// State being built up to this invoke in the time window.
41+
State map[string]string `json:"state"`
42+
}
43+
44+
// KinesisTimeWindowEventResponse is the outer structure to report batch item failures for KinesisTimeWindowEvent.
45+
type KinesisTimeWindowEventResponse struct {
46+
TimeWindowEventResponseProperties
47+
BatchItemFailures []KinesisBatchItemFailure `json:"batchItemFailures"`
48+
}
49+
50+
// DynamoDBTimeWindowEventResponse is the outer structure to report batch item failures for DynamoDBTimeWindowEvent.
51+
type DynamoDBTimeWindowEventResponse struct {
52+
TimeWindowEventResponseProperties
53+
BatchItemFailures []DynamoDBBatchItemFailure `json:"batchItemFailures"`
54+
}

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