rust-http-logger

HTTP Server for logging from client JS to a server (into a file).

The server accepts JSON or HTML Form POST data:

POST:

error=my data&info=another data&debug=debug data

JSON (don't forget to add Content-type: application/json):

{
  "error":"Some error happened: TRACEBACK ... ", 
  "info":"This user is suspicious", 
  "warning":"Oh, this happened, beware!", 
  "debug":"NOOO BUGs, BUGs everywhere!"
}

Usage

rust-http-logger localhost:3000 api.log

Now the server accepts incomming connections on port 3000 on your machine and logs the data onto api.log. To test this you can use curl.

curl -X POST -d "error=my data" http://localhost:3000/log/

You will get a JSON response back, like this:

{"success":{"error":"51"},"errors":{}}

This means we wrote 51B to the log file successfully under error log level. Errors (if any) will be shown in "errors" key of the JSON structure.

The api.log file should contain:

[2016-08-06 13:34:04.091372 +02:00] [ERROR] my data

Install

Best way is to install rust and compile the binary yourself. There are some pre-build binaries in the Releases section.

Performance

On my machine (Macbook Air) using wrk, about 7k requests/s with 1000 concurrent connections.

wrk -d60s -c1000 -t100 -s wrk-script.lua http://localhost:3000/log/
Running 1m test @ http://localhost:3000/log/
  100 threads and 1000 connections
  Thread Stats   Avg      Stdev     Max   +/- Stdev
    Latency     4.34ms    1.52ms  67.08ms   93.87%
    Req/Sec   273.68    101.64   660.00     79.48%
  428271 requests in 1.00m, 73.52MB read
  Socket errors: connect 0, read 1702, write 0, timeout 0
Requests/sec:   7125.67
Transfer/sec:      1.22MB

wrk-script.lua:

wrk.scheme = "http"
wrk.host = "localhost"
wrk.port = 3000
wrk.method = "POST"
wrk.path = "/log/"
wrk.headers["Content-Type"] = "application/json"

wrk.body = [[{
    "error":"OHH performance",
    "info":"much information, very wow",
    "warning":"so warn, much very wow",
    "debug":"oh the debugs, so many debugs"
}]]