Firebase 存储和云功能 - ECONNRESET

Question

我开发了一个 Firebase Cloud 函数，可以对上传的图像进行多种操作。我的代码基于 this documentation article and this Cloud Function example. Hence, it is using Google Cloud Storage package.

它几乎一直工作正常，但有时我在上传到存储或从存储中删除时遇到此错误:

 Error: read ECONNRESET
    at exports._errnoException (util.js:1026:11)
    at TLSWrap.onread (net.js:569:26)

我正在使用我的应用程序的默认存储桶，由 event.data.bucket 引用。

如果您需要其他信息或代码片段，请告诉我，即使我的代码非常接近我之前链接的函数示例。

我找到了 this GitHub issue，但我检查过我每次都返回一个承诺。例如，这里是触发错误的删除部分：

index.js

exports.exampleFunction = functions.storage.object().onChange(event => {
    return f_thumbnails.exampleFunction(event);
});

example_function.js

module.exports = exports = function (_admin, _config) {
    admin = _admin;
    config = _config;

    return {
        "exampleFunction": function (event) {
            return exampleFunction(event);
        }
    };
};

const exampleFunction = function (event) {
    const gcsSourceFilePath = event.data.name;
    const gcsSourceFilePathSplit = gcsSourceFilePath.split('/');
    const gcsBaseFolder = gcsSourceFilePathSplit.length > 0 ? gcsSourceFilePathSplit[0] : '';
    const gcsSourceFileName = gcsSourceFilePathSplit.pop();
    const gceSourceFileDir = gcsSourceFilePathSplit.join('/') + (gcsSourceFilePathSplit.length > 0 ? '/' : '');

    // Not an image
    if (!event.data.contentType.startsWith('image/')) {
        console.log('Not an image !');
        return;
    }

    // Thumbnail
    if (gcsSourceFileName.startsWith(config.IMAGES_THUMBNAIL_PREFIX)) {
        console.log('Thumbnail !');
        return;
    }

    const bucket = gcs.bucket(event.data.bucket);
    const gcsThumbnailFilePath = gceSourceFileDir + config.IMAGES_THUMBNAIL_PREFIX + gcsSourceFileName;


    // File deletion
    if (event.data.resourceState === 'not_exists') {
        console.log('Thumbnail deletion : ' + gcsThumbnailFilePath);
        return bucket.file(gcsThumbnailFilePath).delete().then(() => {
            console.log('Deleted thumbnail ' + gcsThumbnailFilePath);
        });
    }
    ...

Answer 1

这似乎与 google-cloud-node 库对套接字的处理以及 Cloud Functions 环境中的默认套接字超时有关。

用户验证的一个解决方案是修改库调用 requests 的方式，通过指定 forever: false 不让套接字永远打开，例如

var request = require('request').defaults({
  timeout: 60000,
  gzip: true,
  forever: false,
  pool: {
    maxSockets: Infinity
  }
});

这在 packages/common/src/utils.js, so you'll need to vendor a copy of the modified library into your project rather than include it as an NPM dependency. See the related public issue for more details on the issue and a link to a fork with the patch applied 中硬编码。

Firebase 存储和云功能 - ECONNRESET

Firebase Storage & Cloud Functions - ECONNRESET

google-cloud-storage

firebase

google-cloud-functions

firebase-storage