Node.js lambda上的无服务器函数始终超时
我写了一个简单的查询调用，我的hello处理程序是Node.js lambda上的无服务器函数始终超时,node.js,lambda,Node.js,Lambda,我写了一个简单的查询调用，我的hello处理程序是 'use strict'; const pg = require('pg'); const conn = 'pg://postgres:user:pass@rds_host:5432/database_name'; module.exports.hello = (event, context, callback) => { const client = new pg.Client(conn); client.connect()
'use strict';
const pg = require('pg');
const conn = 'pg://postgres:user:pass@rds_host:5432/database_name';
module.exports.hello = (event, context, callback) => {
const client = new pg.Client(conn);
client.connect();
client.query('SELECT column_a FROM table_b', function(err, result) {
client.end();
if (err) {
callback(null, {error: err});
} else {
const response = {
statusCode: 200,
body: JSON.stringify({
data: result.rows
}),
};
callback(null, response);
}
});
// Use this code if you don't use the http event with the LAMBDA-PROXY integration
// callback(null, { message: 'Go Serverless v1.0! Your function executed successfully!', event });
};
const handler = require('../server/handler');
handler.hello({}, {}, function(err, response) {
console.log(err, response);
});
$ serverless invoke local -f hello -l
$ SLS_DEBUG=* serverless invoke -f hello -l
{
"errorMessage": "2017-04-21T01:11:19.580Z 697e69bc-262f-11e7-8fee-0331cc761e9a Task timed out after 6.00 seconds"
}
--------------------------------------------------------------------
START RequestId: 697e69bc-262f-11e7-8fee-0331cc761e9a Version: $LATEST
END RequestId: 697e69bc-262f-11e7-8fee-0331cc761e9a
REPORT RequestId: 697e69bc-262f-11e7-8fee-0331cc761e9a Duration: 6000.71 ms Billed Duration: 6000 ms Memory Size: 1024 MB Max Memory Used: 20 MB
2017-04-21T01:11:19.580Z 697e69bc-262f-11e7-8fee-0331cc761e9a Task timed out after 6.00 seconds
Error --------------------------------------------------
Invoked function failed
For debugging logs, run again after setting the "SLS_DEBUG=*" environment variable.
Stack Trace --------------------------------------------
Error: Invoked function failed
at AwsInvoke.log (/home/rkmax/my-project/node_modules/serverless/lib/plugins/aws/invoke/index.js:122:31)
From previous event:
at Object.invoke:invoke [as fn] (/home/rkmax/my-project/node_modules/serverless/lib/plugins/aws/invoke/index.js:22:10)
at BbPromise.reduce (/home/rkmax/my-project/node_modules/serverless/lib/classes/PluginManager.js:210:55)
at runCallback (timers.js:672:20)
at tryOnImmediate (timers.js:645:5)
at processImmediate [as _immediateCallback] (timers.js:617:5)
From previous event:
at PluginManager.invoke (/home/rkmax/my-project/node_modules/serverless/lib/classes/PluginManager.js:210:22)
at PluginManager.run (/home/rkmax/my-project/node_modules/serverless/lib/classes/PluginManager.js:225:17)
at Serverless.run (/home/rkmax/my-project/node_modules/serverless/lib/Serverless.js:97:31)
at serverless.init.then (/home/rkmax/my-project/node_modules/serverless/bin/serverless:23:50)
Get Support --------------------------------------------
Docs: docs.serverless.com
Bugs: github.com/serverless/serverless/issues
Forums: forum.serverless.com
Chat: gitter.im/serverless/serverless
Your Environment Information -----------------------------
OS: linux
Node Version: 7.9.0
Serverless Version: 1.11.0
您的lambda是否与您的Postgres数据库位于同一VPC和子网中？如果您创建了lambda，但没有明确说明它所属的子网，那么它实际上是“公共”的，这意味着它可以访问internet资源、DynamoDB、SNS、S3等，但不能与专用RDS实例通信。要将lambda添加到数据库所在的VPC，请转到选项卡“配置”->“高级设置”，并设置类似于以下内容的规则，显示VPC内启用的流量。。。
在lambda开头添加以下行
exports.handler = function ( event, context, callback ) {
//Instruct the lambda to exit immediately
//and not wait for node event loop to be empty.
context.callbackWaitsForEmptyEventLoop = false;
/* Your code here */
};
我们在查询MySQL时遇到了这个问题，在得到答案之前必须升级到Amazon支持。RDS是公共的，我可以从我的笔记本访问它。您的lambda是否具有正确的IAM权限？可能会将其提升到FullAdmin，然后查看查询是否返回，然后将其缩减。是的，它具有管理员访问策略完全访问所有资源。在每次调用之间添加一些控制台。在超时之前，记录（…）行，以查看lambda正在走多远。当从数据库中获取错误时，为什么要传回成功回调？还有，你给了lambda多少内存来运行？我只是想找出错误，但没有错误像lambda在不调用进程时继续运行一样。exit（）lambda应该在调用回调时返回，无论是错误还是成功。我的下一个建议是放置
console.log