#!/bin/sh

if [ -z "$SWIFT_CONTAINER" ]; then
  echo Set SWIFT_CONTAINER
  exit 1;
fi

path=$1; shift
remote=$1; shift
if [ -z "${path}" -o -z "${remote}" ]; then
    echo "No argument given"
    exit 1
fi

compressed="pg_xlog/${remote}.lzo"
mkdir -p /tmp/pg_xlog
if ! swift download -o "/tmp/${compressed}" $SWIFT_CONTAINER $compressed; then
    echo "Cannot download /tmp/$compressed"
    exit 2
fi

if ! lzop -dc "/tmp/$compressed" > $path; then
    echo "Cannot uncompress /tmp/$compressed to $path"
    exit 3
fi

exit 0