Handle Signal Exceptions during Runtime API Http Requests Gracefully and Version Bump to 3.1.3

[M-Elsaeed]

Handle Signal Exceptions during Runtime API Http Requests Gracefully and Version Bump to 3.1.3

Issue #, if available: #28

Description of changes: Handle the Ruby HTTP library SignalExceptions when receiving SIGTERM/SIGKILL/Interrupt/etc... and shutdown gracefully without polluting customer logs with a false positive exception log.

Target (OCI, Managed Runtime, both): Managed Runtimes (When using Extensions).

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[M-Elsaeed]

Testing

The added snippet in the ruby code gracefully handles exceptions caused by Signals (such as SIGTERM) and interrupts (child of SignalException).

rescue SignalException => sig
    puts "Next invocation HTTP request from the runtime interface client was interrupted with a #{sig} SIGNAL, gracefully shutting down."
    exit 0

• The interrupt is done by control+c and produces the same stack trace in the Issue with out that snippet, and shuts down gracefully with it.

• SIGTERM is done by running kill -TERM <process-id>. You might not see the same stack trace when testing locally, but you will see the graceful shutdown with the snippet.

I tested this with Ruby 3.2, 3.3, and 3.4.

---

Setup to test

Tested this by using a local express server

const express = require('express')
const app = express()
const port = 3000
const sleep = (waitTimeInMs) => new Promise(resolve => setTimeout(resolve, waitTimeInMs));

app.get('/', async (req, res) => {
    await sleep(2000)
    res.send('Hello World!')
})

app.listen(port, () => {
    console.log(`Example app listening on port ${port}`)
})

Local Ruby Code to Test this

require 'net/http'

def next_invocation
  next_invocation_uri = URI('http://127.0.0.1:3000/')
  begin
    http = Net::HTTP.new(next_invocation_uri.host, next_invocation_uri.port)
    resp = http.start do |connection|
      connection.get(next_invocation_uri.path)
    end
    if resp.is_a?(Net::HTTPSuccess)
      puts resp
    else
      puts 'Received when waiting for next invocation.'
    end
  # rescue SignalException => sig
  #   puts "Next invocation HTTP request from the runtime interface client was interrupted with a #{sig} SIGNAL, gracefully shutting down."
  #   exit 0
  rescue => e
    puts e
  end
end

puts "PID: #{Process.pid}"


while true
  next_invocation()
end