Create install_pokestack helper script

Author: victorges

scripts/install_pokestack.sh

@@ -0,0 +1,97 @@
+#!/usr/bin/env bash
+
+set -eu
+
+if (( EUID != 0 )); then
+    echo "[install_pokestack] You must run this script as root." 1>&2
+    exit 1
+fi
+
+vergte () {
+    if [[ $1 == $2 ]]
+    then
+        return 0
+    fi
+    local IFS=.
+    local i ver1=($1) ver2=($2)
+    # fill empty fields in ver1 with zeros
+    for ((i=${#ver1[@]}; i<${#ver2[@]}; i++))
+    do
+        ver1[i]=0
+    done
+    for ((i=0; i<${#ver1[@]}; i++))
+    do
+        if [[ -z ${ver2[i]} ]]
+        then
+            # fill empty fields in ver2 with zeros
+            ver2[i]=0
+        fi
+        if ((10#${ver1[i]} > 10#${ver2[i]}))
+        then
+            return 0
+        fi
+        if ((10#${ver1[i]} < 10#${ver2[i]}))
+        then
+            return 1
+        fi
+    done
+    return 0
+}
+
+USER=$(who am i | cut -d ' ' -f 1)
+NODE_VERSION="$(node --version | cut -c 2-)"
+
+if [ $? = 0 ] && vergte "$NODE_VERSION" "6.0"; then
+  echo "[install_pokestack] NodeJS >=6.0 (v$NODE_VERSION) already installed, skipping"
+else
+  echo "[install_pokestack] Installing NodeJS >=6.x and native build tools"
+  curl -sL https://deb.nodesource.com/setup_6.x | bash -
+  apt-get install -y nodejs build-essential
+fi
+
+echo "[install_pokestack] Downloading latest pokestack release"
+LATEST_URL=$(curl -s https://api.github.com/repos/v1ct04/benchstack/releases | grep browser_download_url | cut -d '"' -f 4 | grep pokestack | grep .tar.gz)
+
+echo "[install_pokestack] URL: $LATEST_URL"
+FILENAME="${LATEST_URL##*/}"
+DIRNAME="${FILENAME%.tar.gz}"
+
+if [[ $? != 0 || -z "$LATEST_URL" || -z "$DIRNAME" ]]; then
+  echo "[install_pokestack] Failed to get release URL or filename."
+  exit 1
+fi
+
+if [ -d "$DIRNAME" ]; then
+  echo "[install_pokestack] Latest release already downloaded. Skipping."
+else
+  curl -SL "$LATEST_URL" | sudo -u "$USER" tar -xz
+fi
+cd "$DIRNAME"
+
+echo "[install_pokestack] Installing npm dependencies as user $USER"
+sudo -u "$USER" npm install
+
+# Set up system service
+
+echo "[install_pokestack] Installing pm2 and enabling auto-start behavior"
+npm install -g pm2
+pm2 startup
+
+echo "[install_pokestack] Restarting pokestack service in pm2"
+pm2 delete pokestack > /dev/null || true
+if [ $# -gt 0 ]; then
+  pm2 start bin/www --name="pokestack" -- "$@"
+else
+  pm2 start bin/www --name="pokestack"
+fi
+pm2 save
+
+echo "[install_pokestack] Waiting for service initialization"
+sleep 5
+
+if pm2 status | grep pokestack | grep online > /dev/null; then
+  echo "[install_pokestack] Success! Pokestack service is up and running"
+else
+  echo "[install_pokestack] Failed! Check pm2 logs for fixing."
+  exit 1
+fi