3 # DO NOT EDIT - This file is being maintained by Chef
5 # Before running updates, the replication needs to be set up with the timestamp
6 # set to the day of the latest planet dump. Setting to midnight ensures we get
7 # conistent data after first run. osmosis --read-replication-interval-init is
8 # used to initially create the state file
12 [ -f state-prev.txt ] && mv state-prev.txt state.txt
15 # Send output to the log
16 exec > /var/log/tile/replicate.log 2>&1
18 # Change to the replication state directory
21 # Install exit handler
24 # Read in initial state
30 # Work out the name of the next file
31 file="changes-${sequenceNumber}.osm.gz"
33 # Save state file so we can rollback if an error occurs
34 cp state.txt state-prev.txt
36 # Fetch the next set of changes
37 osmosis --read-replication-interval --simc --write-xml-change file="${file}" compressionMethod="gzip"
42 # Enable exit on error
45 # Remember the previous sequence number
46 prevSequenceNumber=$sequenceNumber
51 # Did we get any new data?
52 if [ "${sequenceNumber}" == "${prevSequenceNumber}" ]
54 # Log the lack of data
55 echo "No new data available. Sleeping..."
57 # Remove file, it will just be an empty changeset
60 # No need to rollback now
63 # Sleep for a short while
67 echo "Fetched new data from ${prevSequenceNumber} to ${sequenceNumber} into ${file}"
69 # Apply the changes to the database
70 <% if node[:tile][:node_file] -%>
71 osm2pgsql --slim --append --flat-nodes=<%= node[:tile][:node_file] %> ${file}
73 osm2pgsql --slim --append ${file}
76 # No need to rollback now
79 # Expire tiles which are touched by the changes
80 sudo -u www-data /usr/local/bin/expire-tiles ${file} > /dev/null 2>&1 &
83 # Delete old downloads
84 find . -name 'changes-*.gz' -mmin +300 -exec rm -f {} \;
86 # Disable exit on error
89 # Log our failure to fetch changes
90 echo "Failed to fetch changes - waiting a few minutes before retry"
92 # Wait five minutes and have another go