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# Exemplo de armazenamento em cache de chaves de dados
Este exemplo usa [armazenamento em cache de chaves de dados](data-key-caching.md) com um [cache local](data-caching-details.md#simplecache) para acelerar uma aplicação em que os dados gerados por vários dispositivos são criptografados e armazenados em diferentes regiões.
Nesse cenário, vários produtores de dados geram, criptografam e gravam dados em um [stream do Kinesis](https://aws.amazon.com/kinesis/streams/) em cada região. As funções do [AWS Lambda](https://aws.amazon.com/lambda/) (consumidoras) descriptografam os streams e gravam dados de texto simples em uma tabela do DynamoDB na região. Os produtores e os consumidores de dados usam o AWS Encryption SDK e um [AWS KMS provedor de chaves mestras do ](concepts.md#master-key-provider). Para reduzir as chamadas ao KMS, cada produtor e consumidor tem seu próprio armazenamento em cache local.
Você pode encontrar o código-fonte desses exemplos em [Java e Python](sample-cache-example-code.md). A amostra também inclui um CloudFormation modelo que define os recursos para as amostras.
![\[Este diagrama mostra como produtores e consumidores de dados usam o AWS KMS Amazon Kinesis Data Streams e o Amazon DynamoDB.\]](http://docs.aws.amazon.com/pt_br/encryption-sdk/latest/developer-guide/images/simplecache-example.png)
## Resultados do cache local
A tabela a seguir mostra que um armazenamento em cache local reduz o total de chamadas ao KMS (por segundo por região) neste exemplo em 1% de seu valor original.
**Solicitações de produtores**
[\[See the AWS documentation website for more details\]](http://docs.aws.amazon.com/pt_br/encryption-sdk/latest/developer-guide/sample-cache-example.html)
**Solicitações de consumidor**
[\[See the AWS documentation website for more details\]](http://docs.aws.amazon.com/pt_br/encryption-sdk/latest/developer-guide/sample-cache-example.html)
# Exemplo de código de armazenamento em cache de chaves de dados
Este exemplo de código cria uma implementação básica do armazenamento em cache de chaves de dados com um [cache local](data-caching-details.md#simplecache) em Java e Python. O código cria duas instâncias de um cache local: uma para [produtores de dados](#caching-producer) que estão criptografando dados e outra para [consumidores de dados](#caching-consumer) (AWS Lambda funções) que estão descriptografando dados. Para obter detalhes sobre a implementação do armazenamento em cache de chaves de dados em cada linguagem, consulte a documentação de [Javadoc](https://aws.github.io/aws-encryption-sdk-java/) e [Python](https://aws-encryption-sdk-python.readthedocs.io/en/latest/) para o AWS Encryption SDK.
O armazenamento em cache de chaves de dados está disponível para todas as [linguagens de programação](programming-languages.md) suportadas AWS Encryption SDK .
Para obter exemplos completos e testados do uso do armazenamento em cache de chaves de dados no AWS Encryption SDK, consulte:
+ C/C\$1\$1: [caching\$1cmm.cpp](https://github.com/aws/aws-encryption-sdk-c/blob/master/examples/caching_cmm.cpp)
+ Java: [SimpleDataKeyCachingExample.java](https://github.com/aws/aws-encryption-sdk-java/blob/master/src/examples/java/com/amazonaws/crypto/examples/v2/SimpleDataKeyCachingExample.java)
+ JavaScript Navegador: [caching\$1cmm.ts](https://github.com/aws/aws-encryption-sdk-javascript/blob/master/modules/example-browser/src/caching_cmm.ts)
+ JavaScript Node.js: [caching\$1cmm.ts](https://github.com/aws/aws-encryption-sdk-javascript/blob/master/modules/example-node/src/caching_cmm.ts)
+ Python: [data\$1key\$1caching\$1basic.py](https://github.com/aws/aws-encryption-sdk-python/blob/master/examples/src/legacy/data_key_caching_basic.py)
## Produtor
[O produtor obtém um mapa, o converte em JSON, usa o AWS Encryption SDK para criptografá-lo e envia o registro de texto cifrado para um stream do Kinesis em cada um.](https://aws.amazon.com/kinesis/streams/) Região da AWS
O código define um [gerenciador de materiais criptográficos de armazenamento em cache](data-caching-details.md#caching-cmm) (CMM de armazenamento em cache) e o associa a um [cache local](data-caching-details.md#simplecache) e a um [provedor de chave mestrado AWS KMS](concepts.md#master-key-provider) subjacente. O CMM de amazenamento em cache armazena em cache as chaves de dados (e o [material criptográfico relacionado](data-caching-details.md#cache-entries)) do provedor de chaves mestras. Ele também interage com o cache em nome do SDK e impõe os limites de segurança que você define.
Como a chamada para o método de criptografia especifica um CMM de armazenamento em cache, em vez de um [gerenciador de materiais criptográficos (CMM)](concepts.md#crypt-materials-manager) ou provedor de chave mestra comum, a criptografia usará o cache de chave de dados.
------
#### [ Java ]
O exemplo a seguir usa a versão 2. *x* do AWS Encryption SDK for Java. Versão 3. *x* do AWS Encryption SDK for Java desaprova o CMM de armazenamento em cache da chave de dados. Com a versão 3. *x*, você também pode usar o [AWS KMS chaveiro hierárquico](use-hierarchical-keyring.md), uma solução alternativa de cache de materiais criptográficos.
```
/*
* Copyright 2017 Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License"). You may not use this file except
* in compliance with the License. A copy of the License is located at
*
* http://aws.amazon.com/apache2.0
*
* or in the "license" file accompanying this file. This file is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
* specific language governing permissions and limitations under the License.
*/
package com.amazonaws.crypto.examples.kinesisdatakeycaching;
import com.amazonaws.encryptionsdk.AwsCrypto;
import com.amazonaws.encryptionsdk.CommitmentPolicy;
import com.amazonaws.encryptionsdk.CryptoResult;
import com.amazonaws.encryptionsdk.MasterKeyProvider;
import com.amazonaws.encryptionsdk.caching.CachingCryptoMaterialsManager;
import com.amazonaws.encryptionsdk.caching.LocalCryptoMaterialsCache;
import com.amazonaws.encryptionsdk.kmssdkv2.KmsMasterKey;
import com.amazonaws.encryptionsdk.kmssdkv2.KmsMasterKeyProvider;
import com.amazonaws.encryptionsdk.multi.MultipleProviderFactory;
import com.amazonaws.util.json.Jackson;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.UUID;
import java.util.concurrent.TimeUnit;
import software.amazon.awssdk.auth.credentials.AwsCredentialsProvider;
import software.amazon.awssdk.auth.credentials.DefaultCredentialsProvider;
import software.amazon.awssdk.core.SdkBytes;
import software.amazon.awssdk.regions.Region;
import software.amazon.awssdk.services.kinesis.KinesisClient;
import software.amazon.awssdk.services.kms.KmsClient;
/**
* Pushes data to Kinesis Streams in multiple Regions.
*/
public class MultiRegionRecordPusher {
private static final long MAX_ENTRY_AGE_MILLISECONDS = 300000;
private static final long MAX_ENTRY_USES = 100;
private static final int MAX_CACHE_ENTRIES = 100;
private final String streamName_;
private final ArrayList kinesisClients_;
private final CachingCryptoMaterialsManager cachingMaterialsManager_;
private final AwsCrypto crypto_;
/**
* Creates an instance of this object with Kinesis clients for all target Regions and a cached
* key provider containing KMS master keys in all target Regions.
*/
public MultiRegionRecordPusher(final Region[] regions, final String kmsAliasName,
final String streamName) {
streamName_ = streamName;
crypto_ = AwsCrypto.builder()
.withCommitmentPolicy(CommitmentPolicy.RequireEncryptRequireDecrypt)
.build();
kinesisClients_ = new ArrayList<>();
AwsCredentialsProvider credentialsProvider = DefaultCredentialsProvider.builder().build();
// Build KmsMasterKey and AmazonKinesisClient objects for each target region
List masterKeys = new ArrayList<>();
for (Region region : regions) {
kinesisClients_.add(KinesisClient.builder()
.credentialsProvider(credentialsProvider)
.region(region)
.build());
KmsMasterKey regionMasterKey = KmsMasterKeyProvider.builder()
.defaultRegion(region)
.builderSupplier(() -> KmsClient.builder().credentialsProvider(credentialsProvider))
.buildStrict(kmsAliasName)
.getMasterKey(kmsAliasName);
masterKeys.add(regionMasterKey);
}
// Collect KmsMasterKey objects into single provider and add cache
MasterKeyProvider masterKeyProvider = MultipleProviderFactory.buildMultiProvider(
KmsMasterKey.class,
masterKeys
);
cachingMaterialsManager_ = CachingCryptoMaterialsManager.newBuilder()
.withMasterKeyProvider(masterKeyProvider)
.withCache(new LocalCryptoMaterialsCache(MAX_CACHE_ENTRIES))
.withMaxAge(MAX_ENTRY_AGE_MILLISECONDS, TimeUnit.MILLISECONDS)
.withMessageUseLimit(MAX_ENTRY_USES)
.build();
}
/**
* JSON serializes and encrypts the received record data and pushes it to all target streams.
*/
public void putRecord(final Map data) {
String partitionKey = UUID.randomUUID().toString();
Map encryptionContext = new HashMap<>();
encryptionContext.put("stream", streamName_);
// JSON serialize data
String jsonData = Jackson.toJsonString(data);
// Encrypt data
CryptoResult result = crypto_.encryptData(
cachingMaterialsManager_,
jsonData.getBytes(),
encryptionContext
);
byte[] encryptedData = result.getResult();
// Put records to Kinesis stream in all Regions
for (KinesisClient regionalKinesisClient : kinesisClients_) {
regionalKinesisClient.putRecord(builder ->
builder.streamName(streamName_)
.data(SdkBytes.fromByteArray(encryptedData))
.partitionKey(partitionKey));
}
}
}
```
------
#### [ Python ]
```
"""
Copyright 2017 Amazon.com, Inc. or its affiliates. All Rights Reserved.
Licensed under the Apache License, Version 2.0 (the "License"). You may not use this file except
in compliance with the License. A copy of the License is located at
https://aws.amazon.com/apache-2-0/
or in the "license" file accompanying this file. This file is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
specific language governing permissions and limitations under the License.
"""
import json
import uuid
from aws_encryption_sdk import EncryptionSDKClient, StrictAwsKmsMasterKeyProvider, CachingCryptoMaterialsManager, LocalCryptoMaterialsCache, CommitmentPolicy
from aws_encryption_sdk.key_providers.kms import KMSMasterKey
import boto3
class MultiRegionRecordPusher(object):
"""Pushes data to Kinesis Streams in multiple Regions."""
CACHE_CAPACITY = 100
MAX_ENTRY_AGE_SECONDS = 300.0
MAX_ENTRY_MESSAGES_ENCRYPTED = 100
def __init__(self, regions, kms_alias_name, stream_name):
self._kinesis_clients = []
self._stream_name = stream_name
# Set up EncryptionSDKClient
_client = EncryptionSDKClient(CommitmentPolicy.REQUIRE_ENCRYPT_REQUIRE_DECRYPT)
# Set up KMSMasterKeyProvider with cache
_key_provider = StrictAwsKmsMasterKeyProvider(kms_alias_name)
# Add MasterKey and Kinesis client for each Region
for region in regions:
self._kinesis_clients.append(boto3.client('kinesis', region_name=region))
regional_master_key = KMSMasterKey(
client=boto3.client('kms', region_name=region),
key_id=kms_alias_name
)
_key_provider.add_master_key_provider(regional_master_key)
cache = LocalCryptoMaterialsCache(capacity=self.CACHE_CAPACITY)
self._materials_manager = CachingCryptoMaterialsManager(
master_key_provider=_key_provider,
cache=cache,
max_age=self.MAX_ENTRY_AGE_SECONDS,
max_messages_encrypted=self.MAX_ENTRY_MESSAGES_ENCRYPTED
)
def put_record(self, record_data):
"""JSON serializes and encrypts the received record data and pushes it to all target streams.
:param dict record_data: Data to write to stream
"""
# Kinesis partition key to randomize write load across stream shards
partition_key = uuid.uuid4().hex
encryption_context = {'stream': self._stream_name}
# JSON serialize data
json_data = json.dumps(record_data)
# Encrypt data
encrypted_data, _header = _client.encrypt(
source=json_data,
materials_manager=self._materials_manager,
encryption_context=encryption_context
)
# Put records to Kinesis stream in all Regions
for client in self._kinesis_clients:
client.put_record(
StreamName=self._stream_name,
Data=encrypted_data,
PartitionKey=partition_key
)
```
------
## Consumidor
O consumidor de dados é uma função do [AWS Lambda](https://aws.amazon.com/lambda/) acionada por eventos do [Kinesis](https://aws.amazon.com/kinesis/). Ele descriptografa e desserializa cada registro e grava o registro de texto simples em uma tabela do [Amazon DynamoDB](https://aws.amazon.com/dynamodb/) na mesma região.
Como o código do produtor, o código do consumidor habilita o armazenamento em cache da chave de dados usando um gerenciador de materiais criptográficos de cache (caching CMM) em chamadas para o método de descriptografia.
O código Java cria um provedor de chave mestra no *modo estrito* com um especificado AWS KMS key. O modo estrito não é necessário ao descriptografar, mas é uma [prática recomendada.](best-practices.md#strict-discovery-mode) O código Python usa o *modo de descoberta*, que permite AWS Encryption SDK usar qualquer chave de empacotamento que criptografe uma chave de dados para descriptografá-la.
------
#### [ Java ]
O exemplo a seguir usa a versão 2. *x* do AWS Encryption SDK for Java. Versão 3. *x* do AWS Encryption SDK for Java desaprova o CMM de armazenamento em cache da chave de dados. Com a versão 3. *x*, você também pode usar o [AWS KMS chaveiro hierárquico](use-hierarchical-keyring.md), uma solução alternativa de cache de materiais criptográficos.
Esse código cria um provedor de chave mestra para descriptografia no modo estrito. O AWS Encryption SDK pode usar somente o AWS KMS keys que você especificar para descriptografar sua mensagem.
```
/*
* Copyright 2017 Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License"). You may not use this file except
* in compliance with the License. A copy of the License is located at
*
* http://aws.amazon.com/apache2.0
*
* or in the "license" file accompanying this file. This file is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
* specific language governing permissions and limitations under the License.
*/
package com.amazonaws.crypto.examples.kinesisdatakeycaching;
import com.amazonaws.encryptionsdk.AwsCrypto;
import com.amazonaws.encryptionsdk.CommitmentPolicy;
import com.amazonaws.encryptionsdk.CryptoResult;
import com.amazonaws.encryptionsdk.caching.CachingCryptoMaterialsManager;
import com.amazonaws.encryptionsdk.caching.LocalCryptoMaterialsCache;
import com.amazonaws.encryptionsdk.kmssdkv2.KmsMasterKeyProvider;
import com.amazonaws.services.lambda.runtime.Context;
import com.amazonaws.services.lambda.runtime.events.KinesisEvent;
import com.amazonaws.services.lambda.runtime.events.KinesisEvent.KinesisEventRecord;
import com.amazonaws.util.BinaryUtils;
import java.io.UnsupportedEncodingException;
import java.nio.ByteBuffer;
import java.nio.charset.StandardCharsets;
import java.util.concurrent.TimeUnit;
import software.amazon.awssdk.enhanced.dynamodb.DynamoDbEnhancedClient;
import software.amazon.awssdk.enhanced.dynamodb.DynamoDbTable;
import software.amazon.awssdk.enhanced.dynamodb.TableSchema;
/**
* Decrypts all incoming Kinesis records and writes records to DynamoDB.
*/
public class LambdaDecryptAndWrite {
private static final long MAX_ENTRY_AGE_MILLISECONDS = 600000;
private static final int MAX_CACHE_ENTRIES = 100;
private final CachingCryptoMaterialsManager cachingMaterialsManager_;
private final AwsCrypto crypto_;
private final DynamoDbTable- table_;
/**
* Because the cache is used only for decryption, the code doesn't set the max bytes or max
* message security thresholds that are enforced only on on data keys used for encryption.
*/
public LambdaDecryptAndWrite() {
String kmsKeyArn = System.getenv("CMK_ARN");
cachingMaterialsManager_ = CachingCryptoMaterialsManager.newBuilder()
.withMasterKeyProvider(KmsMasterKeyProvider.builder().buildStrict(kmsKeyArn))
.withCache(new LocalCryptoMaterialsCache(MAX_CACHE_ENTRIES))
.withMaxAge(MAX_ENTRY_AGE_MILLISECONDS, TimeUnit.MILLISECONDS)
.build();
crypto_ = AwsCrypto.builder()
.withCommitmentPolicy(CommitmentPolicy.RequireEncryptRequireDecrypt)
.build();
String tableName = System.getenv("TABLE_NAME");
DynamoDbEnhancedClient dynamodb = DynamoDbEnhancedClient.builder().build();
table_ = dynamodb.table(tableName, TableSchema.fromClass(Item.class));
}
/**
* @param event
* @param context
*/
public void handleRequest(KinesisEvent event, Context context)
throws UnsupportedEncodingException {
for (KinesisEventRecord record : event.getRecords()) {
ByteBuffer ciphertextBuffer = record.getKinesis().getData();
byte[] ciphertext = BinaryUtils.copyAllBytesFrom(ciphertextBuffer);
// Decrypt and unpack record
CryptoResult plaintextResult = crypto_.decryptData(cachingMaterialsManager_,
ciphertext);
// Verify the encryption context value
String streamArn = record.getEventSourceARN();
String streamName = streamArn.substring(streamArn.indexOf("/") + 1);
if (!streamName.equals(plaintextResult.getEncryptionContext().get("stream"))) {
throw new IllegalStateException("Wrong Encryption Context!");
}
// Write record to DynamoDB
String jsonItem = new String(plaintextResult.getResult(), StandardCharsets.UTF_8);
System.out.println(jsonItem);
table_.putItem(Item.fromJSON(jsonItem));
}
}
private static class Item {
static Item fromJSON(String jsonText) {
// Parse JSON and create new Item
return new Item();
}
}
}
```
------
#### [ Python ]
Esse código Python é descriptografado com um provedor de chave mestra no modo de descoberta. Ele permite ao AWS Encryption SDK usar qualquer chave de encapsulamento que criptografe uma chave de dados para descriptografá-la. O modo estrito, no qual você especifica as chaves de encapsulamento que podem ser usadas para decodificação, é uma [prática recomendada.](best-practices.md#strict-discovery-mode)
```
"""
Copyright 2017 Amazon.com, Inc. or its affiliates. All Rights Reserved.
Licensed under the Apache License, Version 2.0 (the "License"). You may not use this file except
in compliance with the License. A copy of the License is located at
https://aws.amazon.com/apache-2-0/
or in the "license" file accompanying this file. This file is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
specific language governing permissions and limitations under the License.
"""
import base64
import json
import logging
import os
from aws_encryption_sdk import EncryptionSDKClient, DiscoveryAwsKmsMasterKeyProvider, CachingCryptoMaterialsManager, LocalCryptoMaterialsCache, CommitmentPolicy
import boto3
_LOGGER = logging.getLogger(__name__)
_is_setup = False
CACHE_CAPACITY = 100
MAX_ENTRY_AGE_SECONDS = 600.0
def setup():
"""Sets up clients that should persist across Lambda invocations."""
global encryption_sdk_client
encryption_sdk_client = EncryptionSDKClient(CommitmentPolicy.REQUIRE_ENCRYPT_REQUIRE_DECRYPT)
global materials_manager
key_provider = DiscoveryAwsKmsMasterKeyProvider()
cache = LocalCryptoMaterialsCache(capacity=CACHE_CAPACITY)
# Because the cache is used only for decryption, the code doesn't set
# the max bytes or max message security thresholds that are enforced
# only on on data keys used for encryption.
materials_manager = CachingCryptoMaterialsManager(
master_key_provider=key_provider,
cache=cache,
max_age=MAX_ENTRY_AGE_SECONDS
)
global table
table_name = os.environ.get('TABLE_NAME')
table = boto3.resource('dynamodb').Table(table_name)
global _is_setup
_is_setup = True
def lambda_handler(event, context):
"""Decrypts all incoming Kinesis records and writes records to DynamoDB."""
_LOGGER.debug('New event:')
_LOGGER.debug(event)
if not _is_setup:
setup()
with table.batch_writer() as batch:
for record in event.get('Records', []):
# Record data base64-encoded by Kinesis
ciphertext = base64.b64decode(record['kinesis']['data'])
# Decrypt and unpack record
plaintext, header = encryption_sdk_client.decrypt(
source=ciphertext,
materials_manager=materials_manager
)
item = json.loads(plaintext)
# Verify the encryption context value
stream_name = record['eventSourceARN'].split('/', 1)[1]
if stream_name != header.encryption_context['stream']:
raise ValueError('Wrong Encryption Context!')
# Write record to DynamoDB
batch.put_item(Item=item)
```
------
# Exemplo de armazenamento em cache de chave de dados: modelo CloudFormation
Esse CloudFormation modelo configura todos os AWS recursos necessários para reproduzir o exemplo de armazenamento em [cache da chave de dados](sample-cache-example.md).
------
#### [ JSON ]
```
{
"Parameters": {
"SourceCodeBucket": {
"Type": "String",
"Description": "S3 bucket containing Lambda source code zip files"
},
"PythonLambdaS3Key": {
"Type": "String",
"Description": "S3 key containing Python Lambda source code zip file"
},
"PythonLambdaObjectVersionId": {
"Type": "String",
"Description": "S3 version id for S3 key containing Python Lambda source code zip file"
},
"JavaLambdaS3Key": {
"Type": "String",
"Description": "S3 key containing Python Lambda source code zip file"
},
"JavaLambdaObjectVersionId": {
"Type": "String",
"Description": "S3 version id for S3 key containing Python Lambda source code zip file"
},
"KeyAliasSuffix": {
"Type": "String",
"Description": "Suffix to use for KMS key Alias (ie: alias/KeyAliasSuffix)"
},
"StreamName": {
"Type": "String",
"Description": "Name to use for Kinesis Stream"
}
},
"Resources": {
"InputStream": {
"Type": "AWS::Kinesis::Stream",
"Properties": {
"Name": {
"Ref": "StreamName"
},
"ShardCount": 2
}
},
"PythonLambdaOutputTable": {
"Type": "AWS::DynamoDB::Table",
"Properties": {
"AttributeDefinitions": [
{
"AttributeName": "id",
"AttributeType": "S"
}
],
"KeySchema": [
{
"AttributeName": "id",
"KeyType": "HASH"
}
],
"ProvisionedThroughput": {
"ReadCapacityUnits": 1,
"WriteCapacityUnits": 1
}
}
},
"PythonLambdaRole": {
"Type": "AWS::IAM::Role",
"Properties": {
"AssumeRolePolicyDocument": {
"Version": "2012-10-17",
"Statement": [
{
"Effect": "Allow",
"Principal": {
"Service": "lambda.amazonaws.com"
},
"Action": "sts:AssumeRole"
}
]
},
"ManagedPolicyArns": [
"arn:aws:iam::aws:policy/service-role/AWSLambdaBasicExecutionRole"
],
"Policies": [
{
"PolicyName": "PythonLambdaAccess",
"PolicyDocument": {
"Version": "2012-10-17",
"Statement": [
{
"Effect": "Allow",
"Action": [
"dynamodb:DescribeTable",
"dynamodb:BatchWriteItem"
],
"Resource": {
"Fn::Sub": "arn:aws:dynamodb:${AWS::Region}:${AWS::AccountId}:table/${PythonLambdaOutputTable}"
}
},
{
"Effect": "Allow",
"Action": [
"dynamodb:PutItem"
],
"Resource": {
"Fn::Sub": "arn:aws:dynamodb:${AWS::Region}:${AWS::AccountId}:table/${PythonLambdaOutputTable}*"
}
},
{
"Effect": "Allow",
"Action": [
"kinesis:GetRecords",
"kinesis:GetShardIterator",
"kinesis:DescribeStream",
"kinesis:ListStreams"
],
"Resource": {
"Fn::Sub": "arn:aws:kinesis:${AWS::Region}:${AWS::AccountId}:stream/${InputStream}"
}
}
]
}
}
]
}
},
"PythonLambdaFunction": {
"Type": "AWS::Lambda::Function",
"Properties": {
"Description": "Python consumer",
"Runtime": "python2.7",
"MemorySize": 512,
"Timeout": 90,
"Role": {
"Fn::GetAtt": [
"PythonLambdaRole",
"Arn"
]
},
"Handler": "aws_crypto_examples.kinesis_datakey_caching.consumer.lambda_handler",
"Code": {
"S3Bucket": {
"Ref": "SourceCodeBucket"
},
"S3Key": {
"Ref": "PythonLambdaS3Key"
},
"S3ObjectVersion": {
"Ref": "PythonLambdaObjectVersionId"
}
},
"Environment": {
"Variables": {
"TABLE_NAME": {
"Ref": "PythonLambdaOutputTable"
}
}
}
}
},
"PythonLambdaSourceMapping": {
"Type": "AWS::Lambda::EventSourceMapping",
"Properties": {
"BatchSize": 1,
"Enabled": true,
"EventSourceArn": {
"Fn::Sub": "arn:aws:kinesis:${AWS::Region}:${AWS::AccountId}:stream/${InputStream}"
},
"FunctionName": {
"Ref": "PythonLambdaFunction"
},
"StartingPosition": "TRIM_HORIZON"
}
},
"JavaLambdaOutputTable": {
"Type": "AWS::DynamoDB::Table",
"Properties": {
"AttributeDefinitions": [
{
"AttributeName": "id",
"AttributeType": "S"
}
],
"KeySchema": [
{
"AttributeName": "id",
"KeyType": "HASH"
}
],
"ProvisionedThroughput": {
"ReadCapacityUnits": 1,
"WriteCapacityUnits": 1
}
}
},
"JavaLambdaRole": {
"Type": "AWS::IAM::Role",
"Properties": {
"AssumeRolePolicyDocument": {
"Version": "2012-10-17",
"Statement": [
{
"Effect": "Allow",
"Principal": {
"Service": "lambda.amazonaws.com"
},
"Action": "sts:AssumeRole"
}
]
},
"ManagedPolicyArns": [
"arn:aws:iam::aws:policy/service-role/AWSLambdaBasicExecutionRole"
],
"Policies": [
{
"PolicyName": "JavaLambdaAccess",
"PolicyDocument": {
"Version": "2012-10-17",
"Statement": [
{
"Effect": "Allow",
"Action": [
"dynamodb:DescribeTable",
"dynamodb:BatchWriteItem"
],
"Resource": {
"Fn::Sub": "arn:aws:dynamodb:${AWS::Region}:${AWS::AccountId}:table/${JavaLambdaOutputTable}"
}
},
{
"Effect": "Allow",
"Action": [
"dynamodb:PutItem"
],
"Resource": {
"Fn::Sub": "arn:aws:dynamodb:${AWS::Region}:${AWS::AccountId}:table/${JavaLambdaOutputTable}*"
}
},
{
"Effect": "Allow",
"Action": [
"kinesis:GetRecords",
"kinesis:GetShardIterator",
"kinesis:DescribeStream",
"kinesis:ListStreams"
],
"Resource": {
"Fn::Sub": "arn:aws:kinesis:${AWS::Region}:${AWS::AccountId}:stream/${InputStream}"
}
}
]
}
}
]
}
},
"JavaLambdaFunction": {
"Type": "AWS::Lambda::Function",
"Properties": {
"Description": "Java consumer",
"Runtime": "java8",
"MemorySize": 512,
"Timeout": 90,
"Role": {
"Fn::GetAtt": [
"JavaLambdaRole",
"Arn"
]
},
"Handler": "com.amazonaws.crypto.examples.kinesisdatakeycaching.LambdaDecryptAndWrite::handleRequest",
"Code": {
"S3Bucket": {
"Ref": "SourceCodeBucket"
},
"S3Key": {
"Ref": "JavaLambdaS3Key"
},
"S3ObjectVersion": {
"Ref": "JavaLambdaObjectVersionId"
}
},
"Environment": {
"Variables": {
"TABLE_NAME": {
"Ref": "JavaLambdaOutputTable"
},
"CMK_ARN": {
"Fn::GetAtt": [
"RegionKinesisCMK",
"Arn"
]
}
}
}
}
},
"JavaLambdaSourceMapping": {
"Type": "AWS::Lambda::EventSourceMapping",
"Properties": {
"BatchSize": 1,
"Enabled": true,
"EventSourceArn": {
"Fn::Sub": "arn:aws:kinesis:${AWS::Region}:${AWS::AccountId}:stream/${InputStream}"
},
"FunctionName": {
"Ref": "JavaLambdaFunction"
},
"StartingPosition": "TRIM_HORIZON"
}
},
"RegionKinesisCMK": {
"Type": "AWS::KMS::Key",
"Properties": {
"Description": "Used to encrypt data passing through Kinesis Stream in this region",
"Enabled": true,
"KeyPolicy": {
"Version": "2012-10-17",
"Statement": [
{
"Effect": "Allow",
"Principal": {
"AWS": {
"Fn::Sub": "arn:aws:iam::${AWS::AccountId}:root"
}
},
"Action": [
"kms:Encrypt",
"kms:GenerateDataKey",
"kms:CreateAlias",
"kms:DeleteAlias",
"kms:DescribeKey",
"kms:DisableKey",
"kms:EnableKey",
"kms:PutKeyPolicy",
"kms:ScheduleKeyDeletion",
"kms:UpdateAlias",
"kms:UpdateKeyDescription"
],
"Resource": "*"
},
{
"Effect": "Allow",
"Principal": {
"AWS": [
{
"Fn::GetAtt": [
"PythonLambdaRole",
"Arn"
]
},
{
"Fn::GetAtt": [
"JavaLambdaRole",
"Arn"
]
}
]
},
"Action": "kms:Decrypt",
"Resource": "*"
}
]
}
}
},
"RegionKinesisCMKAlias": {
"Type": "AWS::KMS::Alias",
"Properties": {
"AliasName": {
"Fn::Sub": "alias/${KeyAliasSuffix}"
},
"TargetKeyId": {
"Ref": "RegionKinesisCMK"
}
}
}
}
}
```
------
#### [ YAML ]
```
Parameters:
SourceCodeBucket:
Type: String
Description: S3 bucket containing Lambda source code zip files
PythonLambdaS3Key:
Type: String
Description: S3 key containing Python Lambda source code zip file
PythonLambdaObjectVersionId:
Type: String
Description: S3 version id for S3 key containing Python Lambda source code zip file
JavaLambdaS3Key:
Type: String
Description: S3 key containing Python Lambda source code zip file
JavaLambdaObjectVersionId:
Type: String
Description: S3 version id for S3 key containing Python Lambda source code zip file
KeyAliasSuffix:
Type: String
Description: 'Suffix to use for KMS CMK Alias (ie: alias/)'
StreamName:
Type: String
Description: Name to use for Kinesis Stream
Resources:
InputStream:
Type: AWS::Kinesis::Stream
Properties:
Name: !Ref StreamName
ShardCount: 2
PythonLambdaOutputTable:
Type: AWS::DynamoDB::Table
Properties:
AttributeDefinitions:
-
AttributeName: id
AttributeType: S
KeySchema:
-
AttributeName: id
KeyType: HASH
ProvisionedThroughput:
ReadCapacityUnits: 1
WriteCapacityUnits: 1
PythonLambdaRole:
Type: AWS::IAM::Role
Properties:
AssumeRolePolicyDocument:
Version: 2012-10-17
Statement:
-
Effect: Allow
Principal:
Service: lambda.amazonaws.com
Action: sts:AssumeRole
ManagedPolicyArns:
- arn:aws:iam::aws:policy/service-role/AWSLambdaBasicExecutionRole
Policies:
-
PolicyName: PythonLambdaAccess
PolicyDocument:
Version: 2012-10-17
Statement:
-
Effect: Allow
Action:
- dynamodb:DescribeTable
- dynamodb:BatchWriteItem
Resource: !Sub arn:aws:dynamodb:${AWS::Region}:${AWS::AccountId}:table/${PythonLambdaOutputTable}
-
Effect: Allow
Action:
- dynamodb:PutItem
Resource: !Sub arn:aws:dynamodb:${AWS::Region}:${AWS::AccountId}:table/${PythonLambdaOutputTable}*
-
Effect: Allow
Action:
- kinesis:GetRecords
- kinesis:GetShardIterator
- kinesis:DescribeStream
- kinesis:ListStreams
Resource: !Sub arn:aws:kinesis:${AWS::Region}:${AWS::AccountId}:stream/${InputStream}
PythonLambdaFunction:
Type: AWS::Lambda::Function
Properties:
Description: Python consumer
Runtime: python2.7
MemorySize: 512
Timeout: 90
Role: !GetAtt PythonLambdaRole.Arn
Handler: aws_crypto_examples.kinesis_datakey_caching.consumer.lambda_handler
Code:
S3Bucket: !Ref SourceCodeBucket
S3Key: !Ref PythonLambdaS3Key
S3ObjectVersion: !Ref PythonLambdaObjectVersionId
Environment:
Variables:
TABLE_NAME: !Ref PythonLambdaOutputTable
PythonLambdaSourceMapping:
Type: AWS::Lambda::EventSourceMapping
Properties:
BatchSize: 1
Enabled: true
EventSourceArn: !Sub arn:aws:kinesis:${AWS::Region}:${AWS::AccountId}:stream/${InputStream}
FunctionName: !Ref PythonLambdaFunction
StartingPosition: TRIM_HORIZON
JavaLambdaOutputTable:
Type: AWS::DynamoDB::Table
Properties:
AttributeDefinitions:
-
AttributeName: id
AttributeType: S
KeySchema:
-
AttributeName: id
KeyType: HASH
ProvisionedThroughput:
ReadCapacityUnits: 1
WriteCapacityUnits: 1
JavaLambdaRole:
Type: AWS::IAM::Role
Properties:
AssumeRolePolicyDocument:
Version: 2012-10-17
Statement:
-
Effect: Allow
Principal:
Service: lambda.amazonaws.com
Action: sts:AssumeRole
ManagedPolicyArns:
- arn:aws:iam::aws:policy/service-role/AWSLambdaBasicExecutionRole
Policies:
-
PolicyName: JavaLambdaAccess
PolicyDocument:
Version: 2012-10-17
Statement:
-
Effect: Allow
Action:
- dynamodb:DescribeTable
- dynamodb:BatchWriteItem
Resource: !Sub arn:aws:dynamodb:${AWS::Region}:${AWS::AccountId}:table/${JavaLambdaOutputTable}
-
Effect: Allow
Action:
- dynamodb:PutItem
Resource: !Sub arn:aws:dynamodb:${AWS::Region}:${AWS::AccountId}:table/${JavaLambdaOutputTable}*
-
Effect: Allow
Action:
- kinesis:GetRecords
- kinesis:GetShardIterator
- kinesis:DescribeStream
- kinesis:ListStreams
Resource: !Sub arn:aws:kinesis:${AWS::Region}:${AWS::AccountId}:stream/${InputStream}
JavaLambdaFunction:
Type: AWS::Lambda::Function
Properties:
Description: Java consumer
Runtime: java8
MemorySize: 512
Timeout: 90
Role: !GetAtt JavaLambdaRole.Arn
Handler: com.amazonaws.crypto.examples.kinesisdatakeycaching.LambdaDecryptAndWrite::handleRequest
Code:
S3Bucket: !Ref SourceCodeBucket
S3Key: !Ref JavaLambdaS3Key
S3ObjectVersion: !Ref JavaLambdaObjectVersionId
Environment:
Variables:
TABLE_NAME: !Ref JavaLambdaOutputTable
CMK_ARN: !GetAtt RegionKinesisCMK.Arn
JavaLambdaSourceMapping:
Type: AWS::Lambda::EventSourceMapping
Properties:
BatchSize: 1
Enabled: true
EventSourceArn: !Sub arn:aws:kinesis:${AWS::Region}:${AWS::AccountId}:stream/${InputStream}
FunctionName: !Ref JavaLambdaFunction
StartingPosition: TRIM_HORIZON
RegionKinesisCMK:
Type: AWS::KMS::Key
Properties:
Description: Used to encrypt data passing through Kinesis Stream in this region
Enabled: true
KeyPolicy:
Version: 2012-10-17
Statement:
-
Effect: Allow
Principal:
AWS: !Sub arn:aws:iam::${AWS::AccountId}:root
Action:
# Data plane actions
- kms:Encrypt
- kms:GenerateDataKey
# Control plane actions
- kms:CreateAlias
- kms:DeleteAlias
- kms:DescribeKey
- kms:DisableKey
- kms:EnableKey
- kms:PutKeyPolicy
- kms:ScheduleKeyDeletion
- kms:UpdateAlias
- kms:UpdateKeyDescription
Resource: '*'
-
Effect: Allow
Principal:
AWS:
- !GetAtt PythonLambdaRole.Arn
- !GetAtt JavaLambdaRole.Arn
Action: kms:Decrypt
Resource: '*'
RegionKinesisCMKAlias:
Type: AWS::KMS::Alias
Properties:
AliasName: !Sub alias/${KeyAliasSuffix}
TargetKeyId: !Ref RegionKinesisCMK
```
------