Skip to content

Added DynamoDB Table Stream #633

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
eladb merged 3 commits into from
Aug 28, 2018
Merged

Added DynamoDB Table Stream #633

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
3 commits
Select commit Hold shift + click to select a range
a462ea2
added the ability to specify a stream type, default behavior is no st…
Aug 28, 2018
27a483c
incorporated @eladb's feedback
Aug 28, 2018
b41eff3
clarified the default behavior
Aug 28, 2018
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
1 change: 1 addition & 0 deletions CHANGELOG.md
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -35,6 +35,7 @@
+ **Property Changes**
- AWS::AppSync::DataSource HttpConfig (__added__)
- AWS::DAX::Cluster SSESpecification (__added__)
- AWS::DynamoDB::Table Stream (__added__)
- AWS::EC2::VPCEndpoint IsPrivateDnsEnabled (__added__)
- AWS::EC2::VPCEndpoint SecurityGroupIds (__added__)
- AWS::EC2::VPCEndpoint SubnetIds (__added__)
Expand Down
27 changes: 26 additions & 1 deletion packages/@aws-cdk/aws-dynamodb/lib/table.ts
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -23,6 +23,13 @@ export interface TableProps {
* @default <generated>
*/
tableName?: string;

/**
* When an item in the table is modified, StreamViewType determines what information
* is written to the stream for this table. Valid values for StreamViewType are:
* @default undefined, streams are disbaled
*/
streamSpecification?: StreamViewType;
}

/**
Expand All @@ -48,7 +55,8 @@ export class Table extends Construct {
tableName: props.tableName,
keySchema: this.keySchema,
attributeDefinitions: this.attributeDefinitions,
provisionedThroughput: { readCapacityUnits, writeCapacityUnits }
provisionedThroughput: { readCapacityUnits, writeCapacityUnits },
streamSpecification: props.streamSpecification ? {streamViewType: props.streamSpecification} : undefined
});

if (props.tableName) { this.addMetadata('aws:cdk:hasPhysicalName', props.tableName); }
Expand Down Expand Up @@ -112,3 +120,20 @@ export enum KeyAttributeType {
Number = 'N',
String = 'S',
}

/**
* When an item in the table is modified, StreamViewType determines what information
* is written to the stream for this table. Valid values for StreamViewType are:
* @link https://docs.aws.amazon.com/amazondynamodb/latest/APIReference/API_StreamSpecification.html
* @enum {string}
Copy link
Contributor

@eladb eladb Aug 28, 2018

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Not needed

*/
export enum StreamViewType {
/** The entire item, as it appears after it was modified, is written to the stream. */
NewImage = 'NEW_IMAGE',
/** The entire item, as it appeared before it was modified, is written to the stream. */
OldImage = 'OLD_IMAGE',
/** Both the new and the old item images of the item are written to the stream. */
NewAndOldImages = 'NEW_AND_OLD_IMAGES',
/** Only the key attributes of the modified item are written to the stream. */
KeysOnly = 'KEYS_ONLY'
}
141 changes: 137 additions & 4 deletions packages/@aws-cdk/aws-dynamodb/test/test.dynamodb.ts
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -1,6 +1,6 @@
import { App, Stack } from '@aws-cdk/cdk';
import { Test } from 'nodeunit';
import { KeyAttributeType, Table } from '../lib';
import { KeyAttributeType, StreamViewType, Table } from '../lib';

export = {
'default properties': {
Expand All @@ -24,7 +24,7 @@ export = {
Properties: {
AttributeDefinitions: [{ AttributeName: 'hashKey', AttributeType: 'B' }],
KeySchema: [{ AttributeName: 'hashKey', KeyType: 'HASH' }],
ProvisionedThroughput: { ReadCapacityUnits: 5, WriteCapacityUnits: 5 }
ProvisionedThroughput: { ReadCapacityUnits: 5, WriteCapacityUnits: 5 },
}
}
}
Expand Down Expand Up @@ -52,14 +52,147 @@ export = {
{ AttributeName: 'hashKey', KeyType: 'HASH' },
{ AttributeName: 'sortKey', KeyType: 'RANGE' }
],
ProvisionedThroughput: { ReadCapacityUnits: 5, WriteCapacityUnits: 5 }
ProvisionedThroughput: { ReadCapacityUnits: 5, WriteCapacityUnits: 5 },
}
}
}
});

test.done();
},
'stream is not enabled by default'(test: Test) {
const app = new TestApp();
new Table(app.stack, 'MyTable')
.addPartitionKey('partitionKey', KeyAttributeType.Binary)
.addSortKey('sortKey', KeyAttributeType.Number);
const template = app.synthesizeTemplate();

test.deepEqual(template, {
Resources: {
MyTable794EDED1: {
Type: 'AWS::DynamoDB::Table',
Properties: {
AttributeDefinitions: [
{ AttributeName: 'partitionKey', AttributeType: 'B' },
{ AttributeName: 'sortKey', AttributeType: 'N' }
],
KeySchema: [
{ AttributeName: 'partitionKey', KeyType: 'HASH' },
{ AttributeName: 'sortKey', KeyType: 'RANGE' }
],
ProvisionedThroughput: { ReadCapacityUnits: 5, WriteCapacityUnits: 5 },
}
}
}
});

test.done();
},
'can specify new and old images'(test: Test) {
const app = new TestApp();
const table = new Table(app.stack, 'MyTable', {
tableName: 'MyTable',
readCapacity: 42,
writeCapacity: 1337,
streamSpecification: StreamViewType.NewAndOldImages
});
table.addPartitionKey('partitionKey', KeyAttributeType.String);
table.addSortKey('sortKey', KeyAttributeType.Binary);
const template = app.synthesizeTemplate();

test.deepEqual(template, {
Resources: {
MyTable794EDED1: {
Type: 'AWS::DynamoDB::Table',
Properties: {
AttributeDefinitions: [
{ AttributeName: 'partitionKey', AttributeType: 'S' },
{ AttributeName: 'sortKey', AttributeType: 'B' }
],
StreamSpecification: { StreamViewType: 'NEW_AND_OLD_IMAGES' },
KeySchema: [
{ AttributeName: 'partitionKey', KeyType: 'HASH' },
{ AttributeName: 'sortKey', KeyType: 'RANGE' }
],
ProvisionedThroughput: { ReadCapacityUnits: 42, WriteCapacityUnits: 1337 },
TableName: 'MyTable'
}
}
}
});

test.done();
},
'can specify new images only'(test: Test) {
const app = new TestApp();
const table = new Table(app.stack, 'MyTable', {
tableName: 'MyTable',
readCapacity: 42,
writeCapacity: 1337,
streamSpecification: StreamViewType.NewImage
});
table.addPartitionKey('partitionKey', KeyAttributeType.String);
table.addSortKey('sortKey', KeyAttributeType.Binary);
const template = app.synthesizeTemplate();

test.deepEqual(template, {
Resources: {
MyTable794EDED1: {
Type: 'AWS::DynamoDB::Table',
Properties: {
KeySchema: [
{ AttributeName: 'partitionKey', KeyType: 'HASH' },
{ AttributeName: 'sortKey', KeyType: 'RANGE' }
],
ProvisionedThroughput: { ReadCapacityUnits: 42, WriteCapacityUnits: 1337 },
AttributeDefinitions: [
{ AttributeName: 'partitionKey', AttributeType: 'S' },
{ AttributeName: 'sortKey', AttributeType: 'B' }
],
StreamSpecification: { StreamViewType: 'NEW_IMAGE' },
TableName: 'MyTable'
}
}
}
});

test.done();
},
'can specify old images only'(test: Test) {
const app = new TestApp();
const table = new Table(app.stack, 'MyTable', {
tableName: 'MyTable',
readCapacity: 42,
writeCapacity: 1337,
streamSpecification: StreamViewType.OldImage
});
table.addPartitionKey('partitionKey', KeyAttributeType.String);
table.addSortKey('sortKey', KeyAttributeType.Binary);
const template = app.synthesizeTemplate();

test.deepEqual(template, {
Resources: {
MyTable794EDED1: {
Type: 'AWS::DynamoDB::Table',
Properties: {
KeySchema: [
{ AttributeName: 'partitionKey', KeyType: 'HASH' },
{ AttributeName: 'sortKey', KeyType: 'RANGE' }
],
ProvisionedThroughput: { ReadCapacityUnits: 42, WriteCapacityUnits: 1337 },
AttributeDefinitions: [
{ AttributeName: 'partitionKey', AttributeType: 'S' },
{ AttributeName: 'sortKey', AttributeType: 'B' }
],
StreamSpecification: { StreamViewType: 'OLD_IMAGE' },
TableName: 'MyTable'
}
}
}
});

test.done();
}
},

'when specifying every property'(test: Test) {
Expand Down Expand Up @@ -90,7 +223,7 @@ export = {
ReadCapacityUnits: 42,
WriteCapacityUnits: 1337
},
TableName: 'MyTable'
TableName: 'MyTable',
}
}
}
Expand Down