无法使用节点通过 Google Cloud 功能访问数据存储.js

Question

每当我运行函数时，它都会一直运行，直到崩溃为止，并声明错误是未知的。我觉得这可能与我的package.json文件中数据存储依赖关系的版本有关

package.json

{
"name": "sample-http",
"version": "0.0.1",
"dependencies": {
"@google-cloud/datastore": "5.1.0"
}
} 

index.js

/**
* Responds to any HTTP request.
*
* @param {!express:Request} req HTTP request context.
* @param {!express:Response} res HTTP response context.
*/
// Requested from front end
var date = "2002-09-13";
var limit = "10";
exports.checkRecords = async (req, res) => {
// Search for date in Datastore
const {Datastore} = require('@google-cloud/datastore');
const datastore = new Datastore({
projectId: '...',
keyFilename: '...'
});
const taskKey = datastore.key('headline');
const [entity] = await datastore.get(taskKey);
if(entity != null){
res.status(200).send("contains");
}
else{
res.status(200).send("null");
}
};

我只是简单地查看实体是否为空，因为似乎没有其他东西在工作

Answer 1

我认为您在get中缺少Kind

我创建了一个DogKind并添加了Freddie，可以：

var date = "2002-09-13";
var limit = "10";
exports.checkRecords = async (req, res) => {
const { Datastore } = require("@google-cloud/datastore");
const datastore = new Datastore();
const taskKey = datastore.key(["Dog", "Freddie"]);
const [entity] = await datastore.get(taskKey);
if (entity != null) {
res.status(200).send("contains");
}
else {
res.status(200).send("null");
}
};

NB如果您的数据存储在同一个项目中，您可以使用应用程序默认凭据来简化身份验证，即const datastore = new Datastore();

Answer 2

你能试试吗：

var date = "2002-09-13";
var limit = "10";
exports.checkRecords = async (req, res) => {
// Search for date in Datastore
const {Datastore} = require('@google-cloud/datastore');
const datastore = new Datastore({
projectId: '...',
keyFilename: '...'
});
// The kind of the entity
const kind = 'Task';
// The name/ID of the entity
const name = 'sampletask1';
// The Cloud Datastore key for the new entity
const taskKey = datastore.key([kind, name]);
const [entity] = await datastore.get(taskKey);
if(entity != null){
res.status(200).send("contains");
}
else{
res.status(200).send("null");
}
};