#!/bin/bash

# DO NOT EDIT - This file is being maintained by Chef

# Exit on error
set -e

# Get the name of the file and the expected pattern
file="$1"
pattern="^osm-([0-9]{4})-([0-9]{2})-([0-9]{2})\.dmp$"

# Give up now if the file isn't a database dump
[[ $file =~ $pattern ]] || exit 0

# Save the year and date from the file name
year="${BASH_REMATCH[1]}"
date="${year:2:2}${BASH_REMATCH[2]}${BASH_REMATCH[3]}"

# Check the lock
if [ -f /tmp/planetdump.lock ]; then
    if [ "$(ps -p `cat /tmp/planetdump.lock` | wc -l)" -gt 1 ]; then
        echo "Error: Another planetdump is running"
        exit 1
    else
        rm /tmp/planetdump.lock
    fi
fi

# Redirect this shell's output to a file. This is so that it
# can be emailed later, since this script is run from incron
# and incron doesn't yet support MAILTO like cron does. The
# command below appears to work in bash as well as dash.
logfile="/tmp/planetdump.log.$$"
exec > "${logfile}" 2>&1

# Create lock file
echo $$ > /tmp/planetdump.lock

# Define cleanup function
function cleanup {
    # Remove the lock file
    rm /tmp/planetdump.lock

    # Send an email with the output, since incron doesn't yet
    # support doing this in the incrontab
    if [[ -s "$logfile" ]]
    then
        mailx -s "Planet dump output: ${file}" zerebubuth@gmail.com < "${logfile}"
    fi

    # Remove the log file
    rm -f "${logfile}"
}

# Remove lock on exit
trap cleanup EXIT

# Change to working directory
cd /store/planetdump

# Cleanup
rm -rf users
rm -rf changesets changeset_tags
rm -rf nodes node_tags
rm -rf ways way_tags way_nodes
rm -rf relations relation_tags relation_members

# Run the dump
time nice -n 19 /opt/planet-dump-ng/planet-dump-ng \
     -c "pbzip2 -c" -f "/store/backup/${file}" --dense-nodes=1 \
     -C "changesets-${date}.osm.bz2" \
     -D "discussions-${date}.osm.bz2" \
     -x "planet-${date}.osm.bz2" -X "history-${date}.osm.bz2" \
     -p "planet-${date}.osm.pbf" -P "history-${date}.osm.pbf"

# Function to install a dump in place
function install_dump {
  type="$1"
  format="$2"
  dir="$3"
  year="$4"
  name="${type}-${date}.osm.${format}"
  latest="${type}-latest.osm.${format}"

  md5sum "${name}" > "${name}.md5"
  mkdir -p "${dir}/${year}"
  mv "${name}" "${name}.md5" "${dir}/${year}"
  ln -sf "${year:-.}/${name}" "${dir}/${latest}"
  rm -f "${dir}/${latest}.md5"
  sed -e "s/${name}/${latest}/" "${dir}/${year}/${name}.md5" > "${dir}/${latest}.md5"
}

# Move dumps into place
install_dump "changesets" "bz2" "<%= node[:planet][:dump][:xml_directory] %>" "${year}"
install_dump "discussions" "bz2" "<%= node[:planet][:dump][:xml_directory] %>" "${year}"
install_dump "planet" "bz2" "<%= node[:planet][:dump][:xml_directory] %>" "${year}"
install_dump "history" "bz2" "<%= node[:planet][:dump][:xml_history_directory] %>" "${year}"
install_dump "planet" "pbf" "<%= node[:planet][:dump][:pbf_directory] %>"
install_dump "history" "pbf" "<%= node[:planet][:dump][:pbf_history_directory] %>"