Firebase云功能无法正确记录

Question

我正在创建一个社交应用程序，朋友可以在其中通过通讯录找到彼此。本质上，我有两个很长的电话号码列表，并且我想使用firebase-cloud-function查找两个列表中都存在的所有号码。

为此，我将用户的所有联系信息发布到Firebase Realtime数据库，并触发了云功能（.onWrite）。cloud函数获取所有刚刚发布的电话号码，然后检索数据库中所有已验证的电话号码，然后需要交叉引用这两个列表以查找所有匹配项。

这是我的代码...

 exports.crossReferenceContacts = functions.database.ref('/cross-ref-contacts/{userId}').onWrite(event => {

    //if it already existed then this function triggered beacuse we are calling set(null) and thus we dont want to proceed
    if (event.data.previous.exists()) {
        console.log("PREVIOUSLY EXISTED. RETURN NULL!!!");
        return null;
    }

    const userId = event.params.userId;
    const userContacts = event.data.val();

    var contactsOnPhone = [];
    var contactsVerifiedInDatabase =[];
    var matchedContacts= [];

    for (var key in userContacts){
        let contact = new Object();
        contact.contactName = userContacts[key];
        contact.number = key;
        contactsOnPhone.push(contact);
    };

    var verifiedNumsRef = event.data.adminRef.root.child('verified-phone-numbers');
    return verifiedNumsRef.once('value', function(snapshot) {
        const verifiedUsers = snapshot.val();

        for (key in verifiedUsers){
            const number = key
            const userInfo = verifiedUsers[key];
            for (key in userInfo){
                const uid = key;
                const username = userInfo[key];

                var verifiedContact = new Object();
                verifiedContact.name = username;
                verifiedContact.uid = uid;
                verifiedContact.number = number;
                contactsVerifiedInDatabase.push(verifiedContact);
            };

        };

        var verifiedNumbers = contactsVerifiedInDatabase.map(function(x){
            return x.number;
        });
        var contactNumbers = contactsOnPhone.map(function(x){
            return x.number;
        });

      //THIS LINE DOES NOT EVEN GET LOGGED UNLESS I COMMENT OUT THE FOR-LOOP BELOW, ONLY THEN DOES THIS LINE GETS LOGGED
        console.log('got ', verifiedNumbers.length, ' verified numbers along with', contactsVerifiedInDatabase.length, ' verfieid contacts.  Also got', contactNumbers.length, ' phone numbers along with ', contactsOnPhone.length, ' phone contacts');



        for (i = 0; i < contactNumbers.length; i++){

            console.log("i = ", i);

            if (verifiedNumbers.includes(contactNumbers[i])) {
                console.log("GOT A MATCH WITH # ", contactNumbers[i]);
            } else {
                console.log("No mATCH FOR # ", contactNumbers[i]);
            };
        };

        return null;        

    });


});

由于某种原因，当我firebase functions:log在终端中运行时，日志不完整。这是日志...

为什么每次循环for循环时都不会显示日志？它不应该一直打印i = 0到i = 409吗？为什么总是从393开始？而且功能以“超时”状态结束，这是为什么呢？

Answer 1

firebase functions:log默认情况下只能输出一定数量的行。看起来大约40左右。

您可以运行firebase help functions:log以获取告诉您以下内容的命令行选项：

Usage: functions:log [options]

read logs from deployed functions

Options:

-h, --help               output usage information
--only <function_names>  only show logs of specified, comma-seperated functions (e.g. "funcA,funcB")
-n, --lines <num_lines>  specify number of log lines to fetch
--open                   open logs page in web browser

因此，只需运行firebase functions:log -n 500即可获得500条线。他们没有指定是前500个还是后500个（可能最后一个）。但是它足够了。

功能说明