Uso de SDKs da AWS para interagir com o Amazon OpenSearch Sem Servidor

Esta seção inclui exemplos de como usar os SDKs da AWS para interagir com o Amazon OpenSearch Sem Servidor. Esses exemplos de códigos mostram como criar políticas e coleções de segurança, e como consultar coleções.

nota

No momento, estamos criando esses exemplos de código. Se você quiser contribuir com uma amostra de código (Java, Go etc.), abra uma solicitação pull diretamente no repositório do GitHub.

Python

O script de exemplo a seguir usa o AWS SDK for Python (Boto3), assim como o cliente opensearch-py para Python, para criar políticas de criptografia, rede e acesso a dados, criar uma coleção correspondente e indexar alguns dados de exemplo.

Execute os comandos a seguir para instalar as dependências necessárias:

pip install opensearch-py
pip install boto3
pip install botocore
pip install requests-aws4auth

No script, é necessário substituir o elemento Principal pelo o nome do recurso da Amazon (ARN) do usuário ou da função do usuário que está assinando a solicitação. Você também pode, opcionalmente, modificar a region.

from opensearchpy import OpenSearch, RequestsHttpConnection
from requests_aws4auth import AWS4Auth
import boto3
import botocore
import time

# Build the client using the default credential configuration.
# You can use the CLI and run 'aws configure' to set access key, secret
# key, and default region.

client = boto3.client('opensearchserverless')
service = 'aoss'
region = 'us-east-1'
credentials = boto3.Session().get_credentials()
awsauth = AWS4Auth(credentials.access_key, credentials.secret_key,
                   region, service, session_token=credentials.token)


def createEncryptionPolicy(client):
    """Creates an encryption policy that matches all collections beginning with tv-"""
    try:
        response = client.create_security_policy(
            description='Encryption policy for TV collections',
            name='tv-policy',
            policy="""
                {
                    \"Rules\":[
                        {
                            \"ResourceType\":\"collection\",
                            \"Resource\":[
                                \"collection\/tv-*\"
                            ]
                        }
                    ],
                    \"AWSOwnedKey\":true
                }
                """,
            type='encryption'
        )
        print('\nEncryption policy created:')
        print(response)
    except botocore.exceptions.ClientError as error:
        if error.response['Error']['Code'] == 'ConflictException':
            print(
                '[ConflictException] The policy name or rules conflict with an existing policy.')
        else:
            raise error


def createNetworkPolicy(client):
    """Creates a network policy that matches all collections beginning with tv-"""
    try:
        response = client.create_security_policy(
            description='Network policy for TV collections',
            name='tv-policy',
            policy="""
                [{
                    \"Description\":\"Public access for TV collection\",
                    \"Rules\":[
                        {
                            \"ResourceType\":\"dashboard\",
                            \"Resource\":[\"collection\/tv-*\"]
                        },
                        {
                            \"ResourceType\":\"collection\",
                            \"Resource\":[\"collection\/tv-*\"]
                        }
                    ],
                    \"AllowFromPublic\":true
                }]
                """,
            type='network'
        )
        print('\nNetwork policy created:')
        print(response)
    except botocore.exceptions.ClientError as error:
        if error.response['Error']['Code'] == 'ConflictException':
            print(
                '[ConflictException] A network policy with this name already exists.')
        else:
            raise error


def createAccessPolicy(client):
    """Creates a data access policy that matches all collections beginning with tv-"""
    try:
        response = client.create_access_policy(
            description='Data access policy for TV collections',
            name='tv-policy',
            policy="""
                [{
                    \"Rules\":[
                        {
                            \"Resource\":[
                                \"index\/tv-*\/*\"
                            ],
                            \"Permission\":[
                                \"aoss:CreateIndex\",
                                \"aoss:DeleteIndex\",
                                \"aoss:UpdateIndex\",
                                \"aoss:DescribeIndex\",
                                \"aoss:ReadDocument\",
                                \"aoss:WriteDocument\"
                            ],
                            \"ResourceType\": \"index\"
                        },
                        {
                            \"Resource\":[
                                \"collection\/tv-*\"
                            ],
                            \"Permission\":[
                                \"aoss:CreateCollectionItems\"
                            ],
                            \"ResourceType\": \"collection\"
                        }
                    ],
                    \"Principal\":[
                        \"arn:aws:iam::123456789012:role\/Admin\"
                    ]
                }]
                """,
            type='data'
        )
        print('\nAccess policy created:')
        print(response)
    except botocore.exceptions.ClientError as error:
        if error.response['Error']['Code'] == 'ConflictException':
            print(
                '[ConflictException] An access policy with this name already exists.')
        else:
            raise error


def createCollection(client):
    """Creates a collection"""
    try:
        response = client.create_collection(
            name='tv-sitcoms',
            type='SEARCH'
        )
        return(response)
    except botocore.exceptions.ClientError as error:
        if error.response['Error']['Code'] == 'ConflictException':
            print(
                '[ConflictException] A collection with this name already exists. Try another name.')
        else:
            raise error


def waitForCollectionCreation(client):
    """Waits for the collection to become active"""
    response = client.batch_get_collection(
        names=['tv-sitcoms'])
    # Periodically check collection status
    while (response['collectionDetails'][0]['status']) == 'CREATING':
        print('Creating collection...')
        time.sleep(30)
        response = client.batch_get_collection(
            names=['tv-sitcoms'])
    print('\nCollection successfully created:')
    print(response["collectionDetails"])
    # Extract the collection endpoint from the response
    host = (response['collectionDetails'][0]['collectionEndpoint'])
    final_host = host.replace("https://", "")
    indexData(final_host)


def indexData(host):
    """Create an index and add some sample data"""
    # Build the OpenSearch client
    client = OpenSearch(
        hosts=[{'host': host, 'port': 443}],
        http_auth=awsauth,
        use_ssl=True,
        verify_certs=True,
        connection_class=RequestsHttpConnection,
        timeout=300
    )
    # It can take up to a minute for data access rules to be enforced
    time.sleep(45)

    # Create index
    response = client.indices.create('sitcoms-eighties')
    print('\nCreating index:')
    print(response)

    # Add a document to the index.
    response = client.index(
        index='sitcoms-eighties',
        body={
            'title': 'Seinfeld',
            'creator': 'Larry David',
            'year': 1989
        },
        id='1',
    )
    print('\nDocument added:')
    print(response)


def main():
    createEncryptionPolicy(client)
    createNetworkPolicy(client)
    createAccessPolicy(client)
    createCollection(client)
    waitForCollectionCreation(client)


if __name__ == "__main__":
    main()

JavaScript

O script de exemplo a seguir usa o SDK para JavaScript no Node.js, assim como o cliente opensearch-py para JavaScript, para criar políticas de criptografia, rede e acesso a dados, criar uma coleção correspondente, criar um índice e indexar alguns dados de exemplo.

Execute os comandos a seguir para instalar as dependências necessárias:

npm i aws-sdk
npm i aws4
npm i @opensearch-project/opensearch

No script, é necessário substituir o elemento Principal pelo o nome do recurso da Amazon (ARN) do usuário ou da função do usuário que está assinando a solicitação. Você também pode, opcionalmente, modificar a region.

var AWS = require('aws-sdk');
var aws4 = require('aws4');
var {
    Client,
    Connection
} = require("@opensearch-project/opensearch");
var {
    OpenSearchServerlessClient,
    CreateSecurityPolicyCommand,
    CreateAccessPolicyCommand,
    CreateCollectionCommand,
    BatchGetCollectionCommand
} = require("@aws-sdk/client-opensearchserverless");
var client = new OpenSearchServerlessClient();

async function execute() {
    await createEncryptionPolicy(client)
    await createNetworkPolicy(client)
    await createAccessPolicy(client)
    await createCollection(client)
    await waitForCollectionCreation(client)
}

async function createEncryptionPolicy(client) {
    // Creates an encryption policy that matches all collections beginning with 'tv-'
    try {
        var command = new CreateSecurityPolicyCommand({
            description: 'Encryption policy for TV collections',
            name: 'tv-policy',
            type: 'encryption',
            policy: " \
        { \
            \"Rules\":[ \
                { \
                    \"ResourceType\":\"collection\", \
                    \"Resource\":[ \
                        \"collection\/tv-*\" \
                    ] \
                } \
            ], \
            \"AWSOwnedKey\":true \
        }"
        });
        const response = await client.send(command);
        console.log("Encryption policy created:");
        console.log(response['securityPolicyDetail']);
    } catch (error) {
        if (error.name === 'ConflictException') {
            console.log('[ConflictException] The policy name or rules conflict with an existing policy.');
        } else
            console.error(error);
    };
}

async function createNetworkPolicy(client) {
    // Creates a network policy that matches all collections beginning with 'tv-'
    try {
        var command = new CreateSecurityPolicyCommand({
            description: 'Network policy for TV collections',
            name: 'tv-policy',
            type: 'network',
            policy: " \
            [{ \
                \"Description\":\"Public access for television collection\", \
                \"Rules\":[ \
                    { \
                        \"ResourceType\":\"dashboard\", \
                        \"Resource\":[\"collection\/tv-*\"] \
                    }, \
                    { \
                        \"ResourceType\":\"collection\", \
                        \"Resource\":[\"collection\/tv-*\"] \
                    } \
                ], \
                \"AllowFromPublic\":true \
            }]"
        });
        const response = await client.send(command);
        console.log("Network policy created:");
        console.log(response['securityPolicyDetail']);
    } catch (error) {
        if (error.name === 'ConflictException') {
            console.log('[ConflictException] A network policy with that name already exists.');
        } else
            console.error(error);
    };
}

async function createAccessPolicy(client) {
    // Creates a data access policy that matches all collections beginning with 'tv-'
    try {
        var command = new CreateAccessPolicyCommand({
            description: 'Data access policy for TV collections',
            name: 'tv-policy',
            type: 'data',
            policy: " \
            [{ \
                \"Rules\":[ \
                    { \
                        \"Resource\":[ \
                            \"index\/tv-*\/*\" \
                        ], \
                        \"Permission\":[ \
                            \"aoss:CreateIndex\", \
                            \"aoss:DeleteIndex\", \
                            \"aoss:UpdateIndex\", \
                            \"aoss:DescribeIndex\", \
                            \"aoss:ReadDocument\", \
                            \"aoss:WriteDocument\" \
                        ], \
                        \"ResourceType\": \"index\" \
                    }, \
                    { \
                        \"Resource\":[ \
                            \"collection\/tv-*\" \
                        ], \
                        \"Permission\":[ \
                            \"aoss:CreateCollectionItems\" \
                        ], \
                        \"ResourceType\": \"collection\" \
                    } \
                ], \
                \"Principal\":[ \
                    \"arn:aws:iam::123456789012:role\/Admin\" \
                ] \
            }]"
        });
        const response = await client.send(command);
        console.log("Access policy created:");
        console.log(response['accessPolicyDetail']);
    } catch (error) {
        if (error.name === 'ConflictException') {
            console.log('[ConflictException] An access policy with that name already exists.');
        } else
            console.error(error);
    };
}

async function createCollection(client) {
    // Creates a collection to hold TV sitcoms indexes
    try {
        var command = new CreateCollectionCommand({
            name: 'tv-sitcoms',
            type: 'SEARCH'
        });
        const response = await client.send(command);
        return (response)
    } catch (error) {
        if (error.name === 'ConflictException') {
            console.log('[ConflictException] A collection with this name already exists. Try another name.');
        } else
            console.error(error);
    };
}

async function waitForCollectionCreation(client) {
    // Waits for the collection to become active
    try {
        var command = new BatchGetCollectionCommand({
            names: ['tv-sitcoms']
        });
        var response = await client.send(command);
        while (response.collectionDetails[0]['status'] == 'CREATING') {
            console.log('Creating collection...')
            await sleep(30000) // Wait for 30 seconds, then check the status again
            function sleep(ms) {
                return new Promise((resolve) => {
                    setTimeout(resolve, ms);
                });
            }
            var response = await client.send(command);
        }
        console.log('Collection successfully created:');
        console.log(response['collectionDetails']);
        // Extract the collection endpoint from the response
        var host = (response.collectionDetails[0]['collectionEndpoint'])
        // Pass collection endpoint to index document request
        indexDocument(host)
    } catch (error) {
        console.error(error);
    };
}

async function indexDocument(host) {

    var client = new Client({
        node: host,
        Connection: class extends Connection {
            buildRequestObject(params) {
                var request = super.buildRequestObject(params)
                request.service = 'aoss';
                request.region = 'us-east-1'; // e.g. us-east-1
                var body = request.body;
                request.body = undefined;
                delete request.headers['content-length'];
                request.headers['x-amz-content-sha256'] = 'UNSIGNED-PAYLOAD';
                request = aws4.sign(request, AWS.config.credentials);
                request.body = body;

                return request
            }
        }
    });

    // Create an index
    try {
        var index_name = "sitcoms-eighties";

        var response = await client.indices.create({
            index: index_name
        });

        console.log("Creating index:");
        console.log(response.body);

        // Add a document to the index
        var document = "{ \"title\": \"Seinfeld\", \"creator\": \"Larry David\", \"year\": \"1989\" }\n";

        var response = await client.index({
            index: index_name,
            body: document
        });

        console.log("Adding document:");
        console.log(response.body);
    } catch (error) {
        console.error(error);
    };
}

execute()