[英]AWS Lambda call 3 async functions by 1 Lambda call
好了,我完成了。 請有人幫助我:(
不知道js和lambda是怎么工作的
我必須做的:
我可以 1by1 做到這一點,但不能通過 1 個 lambda 調用來做所有事情。
我的代碼:
const https = require('https');
const crypto = require("crypto");
const AWS = require('aws-sdk');
const DynamoDb = new AWS.DynamoDB({region: 'eu-central-1'});
exports.handler = async (event) => {
let response;
console.log("Start");
let steamTicket;
let steamId;
if(event.body){
const body = JSON.parse(event.body);
if(body.steamticket && body.steamid){
steamTicket = body.steamticket;
steamId = body.steamid;
}
else{
response = {
statusCode: 400,
body: JSON.stringify({
authenticated: false,
reason: 'cant find steamid or steamticket in your request'
})
};
return response;
}
}
else{
response = {
statusCode: 400,
body: JSON.stringify({
authenticated: false,
reason: 'cant find request body'
})
};
return response;
}
await httprequest(steamTicket).then((data) =>{
if(data.response && data.response.params){
if(data.response.params.result == 'OK' && data.response.params.steamid == steamId){
console.log(JSON.stringify(data));
const sessionId = crypto.randomBytes(16).toString("hex");
console.log('Generated session id: ' + sessionId);
PutToDB(sessionId, steamId);
}
else{
response = {
statusCode: 400,
body: JSON.stringify({
authenticated: false,
reason: 'steam response is not OK or session != steamId'
})
};
return response;
}
}
else{
response = {
statusCode: 400,
body: JSON.stringify({
authenticated: false,
reason: 'invalid response from steam: ' + JSON.stringify(data)
})
};
return response;
}
});
};
async function PutToDB(sessionId, steamId){
var WriteParams = {
RequestItems:{
SteamSessions: []
}
};
WriteParams.RequestItems.SteamSessions.push({
PutRequest:{
Item: {
SteamId: {S: steamId},
SessionId: {S: sessionId},
ttl: {N: (Math.floor(Date.now() / 1000) + 600).toString()}
}
}
});
console.log('SessionIdToWrite: ' + sessionId);
return new Promise((resolve, reject) =>{
DynamoDb.batchWriteItem(WriteParams, function(err, data){
if(err){
console.log("Error", err);
}
else{
console.log("Success write", JSON.stringify(data));
}
})
})
}
async function httprequest(steamTicket) {
return new Promise((resolve, reject) => {
const options = {
host: 'partner.steam-api.com',
path: '/ISteamUserAuth/AuthenticateUserTicket/v1/?key=somekey&appid=someid&ticket=' + steamTicket,
port: 443,
method: 'GET'
};
const req = https.request(options, (res) => {
if (res.statusCode < 200 || res.statusCode >= 300) {
return reject(new Error('statusCode=' + res.statusCode));
}
var body = [];
res.on('data', function(chunk) {
body.push(chunk);
});
res.on('end', function() {
try {
body = JSON.parse(Buffer.concat(body).toString());
} catch(e) {
reject(e);
}
resolve(body);
});
});
req.on('error', (e) => {
reject(e.message);
});
// send the request
req.end();
});
}
我已經迷路了,我什至不確定它應該像那樣工作。
最令人困惑的是:這個 b 給了我這個測試結果:
運行 1:
2021-03-05T13:28:47.741Z INFO Start
2021-03-05T13:28:48.612Z INFO {"response":{"params":{"result":"OK","steamid":"mysteamid","ownersteamid":"mysteamid","vacbanned":false,"publisherbanned":false}}}
2021-03-05T13:28:48.650Z INFO Generated session id: 6a5633a5f862d8663d0fe546a9c89feb
2021-03-05T13:28:48.650Z INFO SessionIdToWrite: 6a5633a5f862d8663d0fe546a9c89feb
DynamoDb 是空的,這里我們看不到來自 DynamoDb.batchWriteItem 結果的日志。
運行 2:
2021-03-05T13:29:53.308Z INFO Start
2021-03-05T13:29:53.674Z INFO Success write {"UnprocessedItems":{}}
2021-03-05T13:29:54.048Z INFO {"response":{"params":{"result":"OK","steamid":"mysteamid","ownersteamid":"mysteamid","vacbanned":false,"publisherbanned":false}}}
2021-03-05T13:29:54.048Z INFO Generated session id: 05c62de782202fc100cea9d47e38242c
2021-03-05T13:29:54.048Z INFO SessionIdToWrite: 05c62de782202fc100cea9d47e38242c
在第二次運行之后,我可以從 FIRST RUN (6a5633a5f862d8663d0fe546a9c89feb) 中看到 DynamoDb sessionId
如果我再次運行它,將會有第二次運行的 id
我認為它會在新運行時繼續運行以前的任務? 或者是什么? 我迷路了
謝謝你的幫助
您需要在DynamoDb.batchWriteItem
調用中調用拒絕/解析。
return new Promise((resolve, reject) =>{
DynamoDb.batchWriteItem(WriteParams, function(err, data){
if(err){
console.log("Error", err);
reject(err);
}
else{
console.log("Success write", JSON.stringify(data));
resolve();
}
})
})
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