在运行时在node.js中启用和声代理 [英] Enable harmony proxies at runtime in node.js

问题描述

我有一个用于节点的RPC库，现在它对远程对象(如果可用)(通过检查是否存在Proxy全局对象)使用协调代理.

I have a little RPC library for node, and right now it uses harmony proxies for remote objects if they are available (by checking for the existence of a Proxy global).

我希望能够在运行时(即，不是以--harmony-proxy标志开始的节点进程中)打开和声代理.这可能吗?

I'd like to be able to turn harmony proxies on at runtime, that is, in a node process that was not started with the --harmony-proxy flag. Is this possible?

我知道有充分的理由不这样做，而且我也不在乎:-P

I understand that there are good reasons not to do this, and I don't really care :-P

编辑如答案中所指出，node.js代理使用的是较旧的规范.我可以使用 https://github.com/tvcutsem/harmony-reflect 之类的垫片工作可以解决这个问题，但这仍然需要--harmony标志来启用基础代理支持，我想知道是否有可能在运行时在没有--harmony标志的情况下启用该功能.

EDIT As pointed out in the answers, node.js proxies use an older spec. I can use a shim like https://github.com/tvcutsem/harmony-reflect to work around this, but this still requires the --harmony flag to enable the underlying proxy support, and I want to know whether it's possible to enable that at runtime in a process started without the --harmony flags.

推荐答案

代理的版本取决于您使用的是master还是v0.10.最新的稳定版(v0.10)使用3.14分支，而开发版(master)保留在v8 bleeding_edge(当前为3.20)上.因此，更正确的问题是"v8实施了什么版本的代理?"

The version of Proxy is depend on whether you use master or v0.10. Latest stable (v0.10) uses the 3.14 branch, while development (master) stays with v8 bleeding_edge (currently at 3.20). So the more correct question is, "what version of proxies has v8 implemented?"

有关代理实现的工作正在完成，但是现在这是一个移动的目标.在错误跟踪器( http://code.google .com/p/v8/issues/detail?id = 1543 )，似乎又要进行另一轮更改了.因此，请注意即将进行的开发.

Work is being done on the proxy implementation, but it's a moving target right now. Referencing the proxy implementation ticket in the bug tracker (http://code.google.com/p/v8/issues/detail?id=1543) it looks like another round of changes are coming. So be careful with upcoming development.

至于在应用程序而不是命令行中启用代理，我相信您必须编写一个本机模块并使用V8::SetFlagsFromString方法(

As far as enabling proxies in the app and not the command line I believe you'll have to write a native module and use the V8::SetFlagsFromString method (https://github.com/v8/v8/blob/f281162/include/v8.h#L4341-L4344). If you need an example I might make time to whip one up.

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