Quick script for running swagger codegen cli directly

swagger.sh

#!/bin/bash

ver=2.2.0
jar=swagger-codegen-cli-$ver.jar
md5=57e673eb334364ab614cc6083b0f4b27
repo="http://repo1.maven.org/maven2/io/swagger/swagger-codegen-cli/$ver/$jar"

if [ ! -f $jar ]; then
  echo "[info] downloading $PWD/$jar from $repo" 1>&2
  if ! curl --location --silent --fail --remote-name $repo -o $jar; then
    exit 1
  fi
fi

checksum=`openssl dgst -md5 $jar | awk '{ print $2 }'`
if [ "$checksum" != $md5 ]; then
  echo "[error] Bad $PWD/$jar. Delete $PWD/$jar and run $0 again."
  exit 1
fi

java -ea                          \
  $JAVA_OPTS                      \
  -Xms512M                        \
  -Xmx1024M                       \
  -server                         \
  -jar $jar "$@"