AWS Advanced NodeJS Wrapperを使ってRDS Postgresに接続してみた

npm install @aws-sdk/client-secrets-manager aws-advanced-nodejs-wrapper pg 

wget https://truststore.pki.rds.amazonaws.com/ap-northeast-1/ap-northeast-1-bundle.pem

/*
  Copyright 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.
  You may obtain a copy of the License at

  http://www.apache.org/licenses/LICENSE-2.0

  Unless required by applicable law or agreed to in writing, software
  distributed under the License 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 { readFileSync } from "fs";
import { AwsPGClient }  from "aws-advanced-nodejs-wrapper/dist/pg/lib/index.js";

const postgresHost = "<RDSのエンドポイント>";
const database = "<RDSのDB名>";
const port = 5432;
const secretId = "<Secrets Managerのシークレット名>";
const secretRegion = "ap-northeast-1";
/* secretId can be set as secret ARN instead. The ARN includes the secretRegion */
// const secretId = "arn:aws:secretsmanager:us-east-1:AccountId:secret:SecretName-6RandomCharacters";

const client = new AwsPGClient({
  // Enable the AWS Secrets Manager Connection Plugin and configure connection parameters.
  host: postgresHost,
  database: database,
  port: port,
  secretId: secretId,
  secretRegion: secretRegion,
  plugins: "secretsManager",
  ssl: {
    ca: readFileSync('<CA証明書の保存先パス>').toString()
  }
});

// Attempt connection.
try {
  await client.connect();
  const result = await client.query("select 1");
  console.log(result);
} finally {
  await client.end();
}

node secrets-manager.mjs

Result {
  command: 'SELECT',
  rowCount: 1,
  oid: null,
  rows: [ { '?column?': 1 } ],
  fields: [
    Field {
      name: '?column?',
      tableID: 0,
      columnID: 0,
      dataTypeID: 23,
      dataTypeSize: 4,
      dataTypeModifier: -1,
      format: 'text'
    }
  ],
  _parsers: [ [Function: parseInteger] ],
  _types: TypeOverrides {
    _types: {
      getTypeParser: [Function: getTypeParser],
      setTypeParser: [Function: setTypeParser],
      arrayParser: [Object],
      builtins: [Object]
    },
    text: {},
    binary: {}
  },
  RowCtor: null,
  rowAsArray: false,
  _prebuiltEmptyResultObject: { '?column?': null }
}

npm install @aws-sdk/credential-providers @aws-sdk/rds-signer

{
	"Version": "2012-10-17",
	"Statement": [
		{
			"Sid": "VisualEditor0",
			"Effect": "Allow",
			"Action": "rds-db:connect",
			"Resource": "*"
		}
	]
}

GRANT rds_iam to <RDSのユーザー名>;

/*
  Copyright 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.
  You may obtain a copy of the License at

  http://www.apache.org/licenses/LICENSE-2.0

  Unless required by applicable law or agreed to in writing, software
  distributed under the License 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 { readFileSync } from "fs";
import { AwsPGClient }  from "aws-advanced-nodejs-wrapper/dist/pg/lib/index.js";

const postgresHost = "<RDSのエンドポイント>";
const username = "<RDSのユーザー名>";
const database = "<RDSのDB名>";
const port = 5432;

const client = new AwsPGClient({
  // Enable AWS IAM database authentication and configure connection parameters
  host: postgresHost,
  port: port,
  user: username,
  plugins: "iam",
  iamRegion: "ap-northeast-1",
  database: database,
  ssl: {
    ca: readFileSync("<CA証明書の保存先パス>").toString()
  }
});

// Attempt connection
try {
  await client.connect();
  const result = await client.query("select now()");
  console.log(result);
} finally {
  await client.end();
}

node iam.mjs

Result {
  command: 'SELECT',
  rowCount: 1,
  oid: null,
  rows: [ { now: 2024-12-26T02:21:07.908Z } ],
  fields: [
    Field {
      name: 'now',
      tableID: 0,
      columnID: 0,
      dataTypeID: 1184,
      dataTypeSize: 8,
      dataTypeModifier: -1,
      format: 'text'
    }
  ],
  _parsers: [ [Function: parseDate] ],
  _types: TypeOverrides {
    _types: {
      getTypeParser: [Function: getTypeParser],
      setTypeParser: [Function: setTypeParser],
      arrayParser: [Object],
      builtins: [Object]
    },
    text: {},
    binary: {}
  },
  RowCtor: null,
  rowAsArray: false,
  _prebuiltEmptyResultObject: { now: null }
}