simple-http-server/srv.sh at main · openshift-examples/simple-http-server · GitHub

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#!/bin/sh
read request
url="${request#GET }"
url="${url% HTTP/*}"
query="${url#*\?}"
url="${url%%\?*}"

echo $(date +"%F %T %z") $SOCAT_PEERADDR $request > /dev/stderr

case $query in
  /demo)
    echo -e "HTTP/1.1 200 OK\r"
    echo -e "Content-Type: text/plain\r"
    echo -e "X-ENV-HOSTNAME: $HOSTNAME\r"
    echo -e "\r"

    echo "# Connection test from $HOSTNAME"
    DEMO_FROM="$(echo $HOSTNAME | cut -f1 -d'-').$(cat /var/run/secrets/kubernetes.io/serviceaccount/namespace)"
    # Skip connection to yourself, because of https://gist.github.com/rbo/4aa7840ebabf11aad3bf7961619e18e3
    # for i in marge.simpson homer.simpson selma.bouvier patty.bouvier ; do
    echo "marge.simpson homer.simpson selma.bouvier patty.bouvier" | tr " " "\n" | grep -v "$(echo $HOSTNAME | cut -f1 -d'-')" | while read i ; do
      echo -n "$DEMO_FROM -> $i : "
      curl -I -s --connect-timeout 1 $i:8080  >/dev/null && echo "OK" || echo "FAIL";
    done;
    ;;

  /readiness-probe)
    if [ -f "/www/readiness-probe" ] ; then
      echo -e "HTTP/1.1 200 OK\r"
      echo -e "Content-Type: text/plain\r"
      echo -e "X-ENV-HOSTNAME: $HOSTNAME\r"
      echo -e "\r"
      echo -e "ok"
    else
      echo -e "HTTP/1.1 404 Not Found\r"
      echo -e "Content-Type: text/plain\r"
      echo -e "X-ENV-HOSTNAME: $HOSTNAME\r"
      echo -e "\r"
    fi
    ;;

  /liveness-probe)
    if [ -f "/www/liveness-probe" ] ; then
      echo -e "HTTP/1.1 200 OK\r"
      echo -e "Content-Type: text/plain\r"
      echo -e "X-ENV-HOSTNAME: $HOSTNAME\r"
      echo -e "\r"
      echo -e "ok"
    else
      echo -e "HTTP/1.1 404 Not Found\r"
      echo -e "Content-Type: text/plain\r"
      echo -e "X-ENV-HOSTNAME: $HOSTNAME\r"
      echo -e "\r"
    fi

    ;;
  /)
    echo -e "HTTP/1.1 200 OK\r"
    echo -e "Content-Type: text/html\r"
    echo -e "X-ENV-HOSTNAME: $HOSTNAME\r"
    echo -e "\r"
    echo -e ""
    echo -e "<!DOCTYPE html>"
    echo -e "<html>"
    echo -e "<body>"
    echo -e "<h3>Hi, $SOCAT_PEERADDR</h3>"
    echo -e "I'm a simple socat+bash webserver running in"
    echo -e "pod <strong>$POD_NAME</strong> on node <strong>$NODE_NAME</strong>"
    echo -e "</body>"
    echo -e "</html>"
    ;;
  /raw)
    echo -e "HTTP/1.1 200 OK\r"
    echo -e "Content-Type: text/plain\r"
    echo -e "X-ENV-HOSTNAME: $HOSTNAME\r"
    echo -e "\r"

    echo "# Basic POD Informations"
    echo -e "\n## Env"
    env | sort

    echo -e "\n## ip addr show"
    ip addr show

    echo -e "\n## ip route show"
    ip route show

    echo -e "\n## resolv.conf"
    cat /etc/resolv.conf

    echo -e "\n## request"
    echo $request
    ;;
  *)
    echo -e "HTTP/1.1 404 Not Found\r"
    echo -e "Content-Type: text/plain\r"
    echo -e "X-ENV-HOSTNAME: $HOSTNAME\r"
    echo -e "X-ENV-QUERY: $query\r"

    echo -e "\r"
    ;;
esac