我正在尝试从lambda
函数执行几个异步请求。第一个调用resolveEndpoints()
成功,第二个调用失败
2017/11/03 17:13:27 Function oauth.callbackHandler timed out after 3 seconds
2017/11/03 17:13:27 Error invoking nodejs6.10 runtime: io: read/write on closed pipe
处理程序是:
exports.callbackHandler = async (event, context, callback) => {
context.callbackWaitsForEmptyEventLoop = false;
let endpoints: any = await resolveEnpoints();
config.accessTokenUri = endpoints.token_endpoint;
let tokenRequestPath =
`http://localhost:7001${event.path}?code=${event.queryStringParameters.code}&realmId=${event.queryStringParameters.realmId}&`;
let accessToken: any = await getAuthToken(tokenRequestPath);
callback(undefined, {statusCode: 200, body: JSON.stringify(accessToken.data)});
};
如果我删除了
resolveEndpoint()
调用,那么getAuthToken()
成功。resolveEndpoint()
返回一个 promise ,该 promise 将在请求完成后解决。const resolveEnpoints = async () => {
return new Promise((resolve, reject) => {
request({
url: config.sandboxEndpoint,
headers: {
'Accept': 'application/json'
}
}, (err, response) => {
if (err) {
reject(err);
}
let payload = JSON.parse(response.body);
resolve(payload);
});
});
};
最佳答案
Lambda的默认超时为3秒,而我超出了一次HTTP调用的时间。只需更新SAM模板以增加需要调用多个第三方服务的处理程序的超时。
超时设置为10秒的更新模板允许处理程序运行到完成状态。
AWSTemplateFormatVersion : '2010-09-09'
Transform: AWS::Serverless-2016-10-31
Description: |
Data service
Resources:
OAuthCallback:
Type: AWS::Serverless::Function
Properties:
Runtime: nodejs6.10
CodeUri: ./build/services/quickbooks
Handler: oauth2.callbackHandler
Timeout: 10
Events:
AuthRoute:
Type: Api
Properties:
Path: /oauth2/callback
Method: get