Javascript 如何将aws secret manager与nodejs lambda一起使用
我试图包装示例代码片段以获取函数中的秘密,然后调用它,但它似乎不起作用。我怀疑我正在异步调用它,我需要同步调用它吗?我只需要一个函数,我可以调用它来获取一个秘密值,并将其放入一个var中 这就是功能:Javascript 如何将aws secret manager与nodejs lambda一起使用,javascript,node.js,aws-lambda,aws-secrets-manager,Javascript,Node.js,Aws Lambda,Aws Secrets Manager,我试图包装示例代码片段以获取函数中的秘密,然后调用它,但它似乎不起作用。我怀疑我正在异步调用它,我需要同步调用它吗?我只需要一个函数,我可以调用它来获取一个秘密值,并将其放入一个var中 这就是功能: //outside exports.handler = (event, context, callback) => { function getSecret(secretName) { // Load the AWS SDK var AWS = require('aws-sdk'),
//outside exports.handler = (event, context, callback) => {
function getSecret(secretName) {
// Load the AWS SDK
var AWS = require('aws-sdk'),
region = process.env.AWS_REGION,
secretName = secretName,
secret,
decodedBinarySecret;
// Create a Secrets Manager client
var client = new AWS.SecretsManager({
region: region
});
// In this sample we 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.
client.getSecretValue({SecretId: secretName}, function(err, data) {
if (err) {
if (err.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.
throw err;
else if (err.code === 'InternalServiceErrorException')
// An error occurred on the server side.
// Deal with the exception here, and/or rethrow at your discretion.
throw err;
else if (err.code === 'InvalidParameterException')
// You provided an invalid value for a parameter.
// Deal with the exception here, and/or rethrow at your discretion.
throw err;
else if (err.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.
throw err;
else if (err.code === 'ResourceNotFoundException')
// We can't find the resource that you asked for.
// Deal with the exception here, and/or rethrow at your discretion.
throw err;
}
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 data) {
return data.SecretString;
} else {
let buff = new Buffer(data.SecretBinary, 'base64');
return buff.toString('ascii');
}
}
});
}
那我就叫它
// inside exports.handler = (event, context, callback) => {
var secret = getSecret('mySecret')
console.log('mysecret: ' + secret )
秘密变量总是未定义
编辑:Async仅适用于承诺,因此我必须使我的函数异步并返回承诺:
async function mySecrets(secretName) {
// Load the AWS SDK
var AWS = require('aws-sdk'),
region = process.env.AWS_REGION,
secretName = secretName,
secret,
decodedBinarySecret;
// Create a Secrets Manager client
var client = new AWS.SecretsManager({
region: region
});
return new Promise((resolve,reject)=>{
client.getSecretValue({SecretId: secretName}, function(err, data) {
// In this sample we 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.
if (err) {
reject(err);
}
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 data) {
resolve(data.SecretString);
} else {
let buff = new Buffer(data.SecretBinary, 'base64');
resolve(buff.toString('ascii'));
}
}
});
});
}
.....
// inside handler
exports.handler = async (event) => {
....
var value = await mySecrets('mysecret')
您需要等待异步调用完成 在您的主处理器中,您将有如下内容:
// inside your main handler
exports.handler = async function(event, context) {
var secret = await getSecret('mySecret')
console.log('mysecret: ' + secret )
return ...
}
我创建了一个同步解决方案,您可以在这里找到: 使用此软件包,您可以在特定命名空间中加载所有机密,如下所示:
const config=require('@jwere/secrets').configSync({
地区:'us-east-1',
环境:"生产",,
命名空间:“我的命名空间”,
});
这将找回你所有的秘密,这些秘密可能不是你想要的。如果你想要一个秘密,你可以这样做:
const config=require('@jwere/secrets')。secretSync({
地区:“美国西部2号”
id:“/my co/api/”
});
aws sdk提供了两种从API获取值的方法。您可以使用本机回调机制(如上所示),也可以在调用链的末尾使用.promise()
将API调用转换为其promise等价物
例如
const data=await(secretManager.getSecret({SecretId}).promise();
如果您使用的是
wait
,那么您的函数需要与调用它的所有函数一样是异步的,除非它们选择使用Promise的,然后/catch
等等。更好的方法是在异步lambda函数中这样做
示例key:val=>password:rootPassword
const secret = await secretClient.getSecretValue({SecretId: 'SecretKeyName'}).promise().then((data) => {
return JSON.parse(data.SecretString);
})
然后以secret.password
的身份访问它
注意:环绕尝试/catch
块自动处理错误。如果有人需要解决此问题,这里有一个更简单的示例:
const result = await client
.getSecretValue({
SecretId: AWSConfig.secretName,
})
.promise();
const parsedResult = JSON.parse(result.SecretString);
我也可以用一个承诺来代替吗?是的,asyc或者承诺是一样的。经过两天无数次的尝试,我终于成功了!