# DO NOT EDIT - This file is being maintained by Chef
-# Initialize timestamp with day of latest planet dump
-# Setting to midnight ensures we get conistent data after first run
-# osmosis --read-replication-interval-init
+# Before running updates, the replication needs to be set up with the timestamp
+# set to the day of the latest planet dump. Setting to midnight ensures we get
+# conistent data after first run. osmosis --read-replication-interval-init is
+# used to initially create the state file
-# Send output to the log
-exec > /var/log/tile/replicate.log 2>&1
+# Define exit handler
+function onexit {
+ [ -f sequence-prev.txt ] && mv sequence-prev.txt sequence.txt
+}
# Change to the replication state directory
cd /var/lib/replicate
-# Read in initial state
-. state.txt
+# Install exit handler
+trap onexit EXIT
# Loop indefinitely
while true
do
# Work out the name of the next file
- file="changes-${sequenceNumber}.osm.gz"
+ file="changes-$(cat sequence.txt).osc.gz"
+
+ # Save sequence file so we can rollback if an error occurs
+ cp sequence.txt sequence-prev.txt
# Fetch the next set of changes
- osmosis --read-replication-interval --simc --write-xml-change file="${file}" compressionMethod="gzip"
+ pyosmium-get-changes --server=<%= node[:tile][:replication][:url] %> --sequence-file=sequence.txt --outfile=${file}
+
+ # Save exit status
+ status=$?
# Check for errors
- if [ $? -eq 0 ]
+ if [ $status -eq 0 ]
then
# Enable exit on error
- set -e
+ set -e
+
+ # Log the new data
+ echo "Fetched new data from $(cat sequence-prev.txt) to $(cat sequence.txt) into ${file}"
+
+ # Apply the changes to the database
+ osm2pgsql --database gis --slim --append --number-processes=1 \
+<% if node[:tile][:database][:node_file] -%>
+ --flat-nodes=<%= node[:tile][:database][:node_file] %> \
+<% end -%>
+<% if node[:tile][:database][:multi_geometry] -%>
+ --multi-geometry \
+<% end -%>
+<% if node[:tile][:database][:hstore] -%>
+ --hstore \
+<% end -%>
+<% if node[:tile][:database][:style_file] -%>
+ --style=<%= node[:tile][:database][:style_file] %> \
+<% end -%>
+<% if node[:tile][:database][:tag_transform_script] -%>
+ --tag-transform-script=<%= node[:tile][:database][:tag_transform_script] %> \
+<% end -%>
+ ${file}
- # Remember the previous sequence number
- prevSequenceNumber=$sequenceNumber
+ # No need to rollback now
+ rm sequence-prev.txt
- # Read in new state
- . state.txt
+ # Get buffer count
+ buffers=$(osmium fileinfo --extended --get=data.buffers.count ${file})
- # Did we get any new data?
- if [ "${sequenceNumber}" == "${prevSequenceNumber}" ]
+ # If this diff has content mark it as the latest diff
+ if [ $buffers -gt 0 ]
then
- # Log the lack of data
- echo "No new data available. Sleeping..."
-
- # Remove file, it will just be an empty changeset
- rm ${file}
-
- # Sleep for a short while
- sleep 30
- else
- # Log the new data
- echo "Fetched new data from ${prevSequenceNumber} to ${sequenceNumber} into ${file}"
-
- # Apply the changes to the database
-<% if node[:tile][:node_file] -%>
- osm2pgsql --slim --append --flat-nodes=<%= node[:tile][:node_file] %> ${file}
-<% else -%>
- osm2pgsql --slim --append ${file}
-<% end -%>
+ ln -f ${file} changes-latest.osc.gz
+ fi
- # Expire tiles which are touched by the changes
- sudo -u www-data /usr/local/bin/expire-tiles ${file} > /dev/null 2>&1 &
- fi
+ # Queue these changes for expiry processing
+ ln ${file} expire-queue/${file}
# Delete old downloads
- find . -name 'changes-*.gz' -mmin +300 -exec rm -f {} \;
+ find . -name 'changes-*.gz' -mmin +300 -exec rm -f {} \;
# Disable exit on error
set +e
+ elif [ $status -eq 3 ]
+ then
+ # Log the lack of data
+ echo "No new data available. Sleeping..."
+
+ # Remove file, it will just be an empty changeset
+ rm ${file}
+
+ # Sleep for a short while
+ sleep 30
else
# Log our failure to fetch changes
- echo "Failed to fetch changes - waiting a few minutes before retry"
+ echo "Failed to fetch changes - waiting a few minutes before retry"
+
+ # Remove any output that was produced
+ rm -f ${file}
# Wait five minutes and have another go
- sleep 300
+ sleep 300
fi
done