add stats summary endpoint

[0oM4R]

Description

Using nginx javascript we can run a script whenever the user hit the target endpoint, the mentioned endpoint is /api/stats-summary, this will reduce code replication and make data consistent over different websites; threefold.io, dashboard
also we are caching the data for one day, if any errors happen while updating it, we are returning the outdated data with flag outdated if there is no cached data too or if any error happen while reading it, we return a dummy data,

Changes

• DockerFile:
  • update the nginx version: njs require the latest nginx image
  • copy nginx files to the image
• Nginx :
  • in nginx.conf I just loaded the needed js module and set the resolver:
    the actual changes on the default nginx.conf is :

    load_module modules/ngx_http_js_module.so;
    js_path "/etc/nginx/njs/";
    
    resolver 8.8.8.8;
    js_import main from stats.js;
    

  • add /summary endpoint to server in `default.conf
  • add njs script

Related Issues

• Grid Capacity cards on the homepage  #1981

Checklist

• Tests included
• Build pass
• Documentation
• Code format and docstrings
• Screenshots/Video attached (needed for UI changes)

[0oM4R]

the verify option is disabled here as we don't have ssl cert for the image;

tfgrid-sdk-ts/packages/new_stats/nginx/njs/stats.js

Line 15 in 0e5faac

fetchPromises.push(ngx.fetch(urls[i], { method: "GET", verify: false }));

[MohamedElmdary]

Do we need to implement retries 3 times and/or return back default values if it failed? @AhmedHanafy725

[MohamedElmdary]

1. Let's invest if this script is used as server or just fire whenever we call route ... in case it works as server we can implement a very simple in-memory cache (last for 1 day)

2. Add 3 reties for request (better to call the failed urls only if possible)

[AhmedHanafy725]

I prefer to have a certain version, so it does not get crashed because a new Alpine image is released.