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Maintaining query scope in Express / Node.js

I am using Express to expose a REST API in my Node.js application. When the REST request comes in, I pull the user information from the HTTP headers. I would like this information to be available throughout the life of this request, no matter what function I am in. The obvious but clumsy way is to pass user information as parameters to all function calls. Is there a better way? So far I've found the following solutions, but I'm not sure if they are prime time ready:

  • StrongLoop Zone Library : The docs say, "The zone library and documentation are still under development: there are bugs, missing features, and limited documentation."
  • Continuation-Local Storage : Not sure if this will be included in Node.js. This issue at the end recommends looking at the StrongLoop zone.
  • Node.js Domains : It doesn't look like this has really taken off.
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I'm not sure what you are still looking for, but I built a while ago express-http-context

for this purpose. This is explicit middleware that sits on top of cls-hooks

(formerly continuation-local-storage

).



Full disclosure: This is an npm package that I have created and maintain.

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