amazon-web-services - 来自 Lambda 的 AWS Secrets Manager 调用返回 null/none

Question

我正在使用 AWS Lambda 函数调用 AWS Secrets Manager 来检索 key 值，但它只返回值 None/Null。

这是我的代码:

# Secrets Manager
import boto3
import base64
from botocore.exceptions import ClientError


def lambda_handler(event, context):
    # Secrets Manager
    def get_secret():

        secret_name = "arn:aws:secretsmanager:region:accountid:secret:full-secret-name"
        region_name = "region"

        # Create a Secrets Manager client
        session = boto3.session.Session()
        client = session.client(
            service_name='secretsmanager',
            region_name=region_name
        )

        # Only handle the specific exceptions for the 'GetSecretValue' API.
        # See https://docs.aws.amazon.com/secretsmanager/latest/apireference/API_GetSecretValue.html
        # We rethrow the exception by default.

        try:
            get_secret_value_response = client.get_secret_value(
                SecretId=secret_name
            )
        except ClientError as e:
            if e.response['Error']['Code'] == 'DecryptionFailureException':
                # Secrets Manager can't decrypt the protected secret text using the provided KMS key.
                # Deal with the exception here, and/or rethrow at your discretion.
                raise e
            elif e.response['Error']['Code'] == 'InternalServiceErrorException':
                # An error occurred on the server side.
                # Deal with the exception here, and/or rethrow at your discretion.
                raise e
            elif e.response['Error']['Code'] == 'InvalidParameterException':
                # You provided an invalid value for a parameter.
                # Deal with the exception here, and/or rethrow at your discretion.
                raise e
            elif e.response['Error']['Code'] == 'InvalidRequestException':
                # You provided a parameter value that is not valid for the current state of the resource.
                # Deal with the exception here, and/or rethrow at your discretion.
                raise e
            elif e.response['Error']['Code'] == 'ResourceNotFoundException':
                # We can't find the resource that you asked for.
                # Deal with the exception here, and/or rethrow at your discretion.
                raise e
        else:
            # Decrypts secret using the associated KMS CMK.
            # Depending on whether the secret is a string or binary, one of these fields will be populated.
            if 'SecretString' in get_secret_value_response:
                secret = get_secret_value_response['SecretString']
            else:
                decoded_binary_secret = base64.b64decode(get_secret_value_response['SecretBinary'])

    secretValue = get_secret()
    print(secretValue)
    return secretValue

在返回中，我得到 null ，在打印中我得到 None 。不太确定我在这里做错了什么，但它没有出错也没有得到我的值(value)。

Secret 已加密，但 Lambda IAM 角色拥有 KMS key 的使用权限，并且 KMS key 也授予了 IAM 角色的使用权限。

我还尝试将 secret_name 设置为 Secrets Name，如下所示:

secret_name = "full-secret-name-no-arn"

问候

Answer 1

解析度:

# Secrets Manager
import json
import boto3
import base64
import logging
from botocore.exceptions import ClientError

logger = logging.getLogger()
logger.setLevel(logging.INFO)

def lambda_handler(event, context):
    logger.info("Inside lambda_handler...")

    # SecretsManager
    secretValues = json.loads(get_secret())

def get_secret():
    logger.info("Inside get_secret...")
    secret_name = "full-arn-goes-here"
    region_name = "region-goes-here"

    # Create a Secrets Manager client
    session = boto3.session.Session()
    client = session.client(
        service_name='secretsmanager',
        region_name=region_name

    )

    try:
        get_secret_value_response = client.get_secret_value(SecretId=secret_name)
        logger.info("Received Response")
    except ClientError as e:
        if e.response['Error']['Code'] == 'DecryptionFailureException':
            # Secrets Manager can't decrypt the protected secret text using the provided KMS key.
            # Deal with the exception here, and/or rethrow at your discretion.
            raise e
        elif e.response['Error']['Code'] == 'InternalServiceErrorException':
            # An error occurred on the server side.
            # Deal with the exception here, and/or rethrow at your discretion.
            raise e
        elif e.response['Error']['Code'] == 'InvalidParameterException':
            # You provided an invalid value for a parameter.
            # Deal with the exception here, and/or rethrow at your discretion.
            raise e
        elif e.response['Error']['Code'] == 'InvalidRequestException':
            # You provided a parameter value that is not valid for the current state of the resource.
            # Deal with the exception here, and/or rethrow at your discretion.
            raise e
        elif e.response['Error']['Code'] == 'ResourceNotFoundException':
            # We can't find the resource that you asked for.
            # Deal with the exception here, and/or rethrow at your discretion.
            raise e
        else:
            # Please see https://docs.aws.amazon.com/secretsmanager/latest/apireference/CommonErrors.html for all the other types of errors not handled above
            raise e
    else:
        # Decrypts secret using the associated KMS CMK.
        # Depending on whether the secret is a string or binary, one of these fields will be populated.
        if 'SecretString' in get_secret_value_response:
            logger.info("Inside string response...")
            return get_secret_value_response['SecretString']
        else:
            logger.info("Inside binary response...")
            return base64.b64decode(get_secret_value_response['SecretBinary'])

只需将 secretValues = json.loads(get_secret()) 放在您的处理程序中。