如何防止 Meteor 观看文件? [英] How to prevent Meteor from watching files?

问题描述

我想将 Dojo Toolkit 与 流星.

1. 我首先将整个 Dojo Toolkit 树复制到 /public

然后，我将它包含在客户端:

Then, I include it on the client side with:

<script src="/dojo/dojo.js" data-dojo-config="async: true"></script>`

一切正常，除了 Meteor 实际上监视 /public 中的每个文件是否有更改，以便它可以重新启动服务器.这实际上在 localhost:3000 上的第一个请求期间导致了很长时间的延迟.

Everything works fine, except Meteor is actually monitoring every single file in /public for changes, so that it can restart the server. This is actually causing a very long delay during the first request on localhost:3000.

有没有办法阻止 Meteor 监视某个目录下的文件?

Is there a way of preventing Meteor from watching files from a certain directory?

Dojo Toolkit 有 10k+ 个文件，所以我收到了 EMFILE 错误声明 这里，用

Dojo Toolkit is 10k+ files so I get the EMFILE error stated here, corrected with

sudo sh -c 'echo 16384 > /proc/sys/fs/inotify/max_user_watches'

推荐答案

意识到这与以下内容重复:使用 Meteor 生成和提供静态文件

realised this is duplicate to: generating and serving static files with Meteor

参见:https://github.com/meteor/meteor/issues/437

这对我来说是个大问题.我必须提供大约 12000 个静态图像，我最初将它们放入公共文件夹中.这导致节点不断地使用近 100% 的一个 CPU 内核.由于内存有限，应用程序崩溃.

This was a major problem for me. I have to serve ~12000 static images, which I initially put into the public folder. This caused node to use nearly 100% of one CPU core, constantly. With limited memory the app crashes.

我目前使用的解决方法

• 创建文件夹 public/.#static/ 并将所有静态资产移动到其中.该文件夹不被流星监视
• 使用静态前缀 (/img/cat.png ->/static/img/cat.png)

• 安装 mime npm 包

• create the folder public/.#static/ and move all static assets into it. This folder isn't watched by meteor
• prefix urls with static (/img/cat.png -> /static/img/cat.png)

• install the mime npm package

cd ~/.meteor/tools/latest/lib/node_modules/
npm install mime

创建一个 rawConnectionHandler 来为资产提供服务(归功于:https://stackoverflow.com/a/20358612)服务器/static_files_handler.coffee

create a rawConnectionHandler to serve the assets (credits to: https://stackoverflow.com/a/20358612) server/static_files_handler.coffee

fs = Npm.require('fs')
mime = Npm.require('mime')
WebApp.rawConnectHandlers.use (req, res, next) ->
  re = /^/static/(.*)$/.exec(req.url)
  if re isnt null # Only handle URLs that start with /static/*
    filePath = process.env.PWD + "/public/.#static/" + re[1]
    type = mime.lookup(filePath)
    data = fs.readFileSync(filePath, data)
    res.writeHead 200,
      "Content-Type": type

    res.write data
    res.end()
  else # Other urls will have default behaviors
    next()
  return

这种方法的局限性:

• 不适合提供带有查询参数的资产.正则表达式还将匹配/static/html/image.html?src=/static/img/cat.png 尝试提供文件名包括参数的文件.这很容易改变.
• Meteor 完全不知道这些文件，因此它们不会包含在 appcache 清单中.如果您想让它们离线可用，请查看我添加到 https://github.com 的 addPaths 选项/buildhybrid/appcache-extra

如果您不想解决这些问题，请考虑从外部服务(例如 AWS S3)提供资产.

If you don't want to work around the problems, consider serving the assets from an external service (ex. AWS S3).

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