我有一個簡單的Lambda函數,它將項目寫入DynamoDB表。 用戶名是分區鍵,createDateTime是排序鍵。AWS Lambda函數返回來自API網關的錯誤,但不是直接調用時發生的錯誤
從Lambda本身調用此函數可成功將項插入表中。通過API網關稱爲然而,當,我收到以下錯誤
{
"errorMessage": "Error putting order into dynamodb: MultipleValidationErrors: There were 14 validation errors:\n* InvalidParameterType: Expected params.Item['createDateTime'] to be a structure\n* UnexpectedParameter: Unexpected key '0' found in params.Item['createDateTime']\n* UnexpectedParameter: Unexpected key '1' found in params.Item['createDateTime']\n* UnexpectedParameter: Unexpected key '2' found in params.Item['createDateTime']\n* UnexpectedParameter: Unexpected key '3' found in params.Item['createDateTime']\n* UnexpectedParameter: Unexpected key '4' found in params.Item['createDateTime']\n* UnexpectedParameter: Unexpected key '5' found in params.Item['createDateTime']\n* UnexpectedParameter: Unexpected key '6' found in params.Item['createDateTime']\n* UnexpectedParameter: Unexpected key '7' found in params.Item['createDateTime']\n* UnexpectedParameter: Unexpected key '8' found in params.Item['createDateTime']\n* UnexpectedParameter: Unexpected key '9' found in params.Item['createDateTime']\n* UnexpectedParameter: Unexpected key '10' found in params.Item['createDateTime']\n* UnexpectedParameter: Unexpected key '11' found in params.Item['createDateTime']\n* UnexpectedParameter: Unexpected key '12' found in params.Item['createDateTime']"
}
我不明白爲什麼當本地調用我的代碼工作,而不是在通過API調用網關?代碼如下:
var AWS = require("aws-sdk");
var DOC = require("dynamodb-doc");
AWS.config.update({region: "eu-west-1"});
var dynamodb = new DOC.DynamoDB();
exports.handler = function(event, context) {
console.log('Received event:', JSON.stringify(event, null, 2));
var tableName = "MarketOrder";
if (event.http_method == 'POST') {
var datetime = new Date().getTime().toString();
dynamodb.putItem({
"TableName": tableName,
"Item" : {
"username" : event.username,
"createDateTime" : datetime,
"orderType": event.orderType,
"numberOfShares": event.numberOfShares,
"price": event.price,
"validToDate": event.validToDate
}
}, function(err, data) {
if (err) {
console.log("dynamodb error: " + err);
context.done('Error putting order into dynamodb: ' +err);
}
else {
console.log('great success: '+JSON.stringify(data, null, ' '));
context.succeed('Sucessfully saved market order');
}
});
}
....
} else {
context.fail('Invalid operation specified:' + event.http_method);
}
};
「我不明白爲什麼當本地調用,而不是在通過API調用網關我的代碼工作?」很顯然API Gateway傳遞的事件數據與您直接測試的事件數據不同。我看到你在你的函數的第一行記錄事件對象。嘗試比較直接調用與API網關調用的日誌,然後您應該看到問題所在。您可能需要修改您的API網關映射模板。 –