Question

我没有完全履行承诺。无论如何，我正在读取mysql表中的行列表，然后在写入Firestore时我想更新一个＆＃34;相关的＆＃34;记录。基本上是总计数。

这是开始：

request(options, function (error, response, body) {
        if (!error && response.statusCode == 200) {
            var data = JSON.parse(body);
            //console.log(data);

            var allObjects = data.resource;
            var obj = {};


            for (j = 0; j < allObjects.length; j++) {
                var records = [];
                var record = allObjects[j];

                //FireStore
                var db = admin.firestore();
                var docRef = db.collection(toCollection).doc(record.nfCode);
                var rec = docRef.set(record);

                addCounts(docRef);


            }

            res.render('index', {title: 'Load Table'});

            offset = offset + limit

        } else {
            return res.send(body);//
            //res.render('index', { title: 'Error' });
        }
    });

然后这是addCount：

    function addCounts(docRef) {

    // In a transaction, update the aggregate totals
    var db = admin.firestore();

    return db.runTransaction(transaction => {
        transaction.get(docRef).then(res => {

        var brandRef = db.collection('brands').doc(res.data().brandNFCode);
    var transaction = db.runTransaction(t => {
        return t.get(brandRef)
            .then(doc => {
            if (res.data().glutenFreeYN == "Y") {

        var glutenFreeCount = doc.data().glutenFreeCount + 1;

        var setWithOptions = transaction.set(brand, {
            glutenFreeProductCount: glutenFreeProductCount

        }, { merge: true });


        return setWithOptions;

    }
});
})
.then(result => {
        console.log('Transaction success', result);
        // return nil
})
.catch(err => {
        // console.log('Transaction failure:', err);
        return nil
});

})
})
}

有更好的方法吗？我的错误来自哪里？

Auth error:Error: socket hang up
(node:90050) UnhandledPromiseRejectionWarning: Unhandled promise rejection (rejection id: 2): Error: Getting metadata from plugin failed with error: socket hang up

Answer 1

您的addCounts函数可能导致此错误：

function addCounts(docRef) {

    // In a transaction, update the aggregate totals
    var db = admin.firestore();

    return db.runTransaction(transaction => {
        return transaction.get(docRef).then(res => {

                        if(res.data().glutenFreeYN == "Y"){
                            var glutenFreeProductCount = res.data().glutenFreeProductCount + 1;

                        }
                        if(res.data().vegetarianYN == "Y"){
                            var vegetarianProductCount = res.data().vegetarianProductCount + 1;

                        }
                        if(res.data().dairyFreeYN == "Y"){
                            var dairyFreeProductCount = res.data().dairyFreeProductCount + 1;

                        }
                        if(res.data().organicYN == "Y"){
                            var organicProductCount = res.data().organicProductCount + 1;

                        }


                        // LOOK HERE!!! You had brand.set()
                        // this version uses the transaction
                        var setWithOptions = transaction.set(brand, {
                            glutenFreeProductCount: glutenFreeProductCount,
                            organicProductCount: organicProductCount,
                            vegetarianProductCount: vegetarianProductCount,
                            dairyFreeProductCount: dairyFreeProductCount

                        }, { merge: true });

                        // LOOK HERE!! Make sure to return the 
                        // set operation
                        return setWithOptions;

                });

                // I removed the .catch() here as it will obscure 
                // errors. You can catch the result of addCounts.
    })
};

Answer 2

遇到此问题并花了一个多小时试图解决。确保系统时间正确同步。我的时间是正确的，但是我的时区不正确，因此系统UTC时间不同步。

要在Windows 10上更正，请转到“设置”->“时间和语言”->“日期和时间”->“立即同步”

未处理的承诺拒绝火库

2 个答案: