From 5a75898a87099ed06d5ec5c52f7751689d102388 Mon Sep 17 00:00:00 2001
From: Tom Hughes <tom@compton.nu>
Date: Sun, 26 Nov 2023 10:41:02 +0000
Subject: [PATCH] Drop support for old style tile server replication

---
 cookbooks/tile/attributes/default.rb          |   1 -
 .../files/default/bin/expire-tiles-single     | 144 ------------
 cookbooks/tile/files/default/ruby/expire.rb   | 191 ----------------
 cookbooks/tile/recipes/default.rb             | 210 ++++++------------
 .../templates/default/expire-tiles-custom.erb |  15 --
 ...e-tiles-osm2pgsql.erb => expire-tiles.erb} |   0
 .../templates/default/replicate-custom.erb    | 104 ---------
 ...{replicate-osm2pgsql.erb => replicate.erb} |   0
 8 files changed, 65 insertions(+), 600 deletions(-)
 delete mode 100644 cookbooks/tile/files/default/bin/expire-tiles-single
 delete mode 100755 cookbooks/tile/files/default/ruby/expire.rb
 delete mode 100644 cookbooks/tile/templates/default/expire-tiles-custom.erb
 rename cookbooks/tile/templates/default/{expire-tiles-osm2pgsql.erb => expire-tiles.erb} (100%)
 delete mode 100644 cookbooks/tile/templates/default/replicate-custom.erb
 rename cookbooks/tile/templates/default/{replicate-osm2pgsql.erb => replicate.erb} (100%)

diff --git a/cookbooks/tile/attributes/default.rb b/cookbooks/tile/attributes/default.rb
index 4efb899cf..776e274b0 100644
--- a/cookbooks/tile/attributes/default.rb
+++ b/cookbooks/tile/attributes/default.rb
@@ -8,7 +8,6 @@ default[:tile][:database][:tag_transform_script] = nil
 
 default[:tile][:mapnik] = "3.1"
 
-default[:tile][:replication][:engine] = "osm2pgsql"
 default[:tile][:replication][:url] = "https://osm-planet-eu-central-1.s3.dualstack.eu-central-1.amazonaws.com/planet/replication/minute"
 
 default[:tile][:data] = {}
diff --git a/cookbooks/tile/files/default/bin/expire-tiles-single b/cookbooks/tile/files/default/bin/expire-tiles-single
deleted file mode 100644
index 431021b2e..000000000
--- a/cookbooks/tile/files/default/bin/expire-tiles-single
+++ /dev/null
@@ -1,144 +0,0 @@
-#!/usr/bin/python3
-"""
-Expire meta tiles from a OSM change file by resetting their modified time.
-"""
-
-import argparse
-import os
-import osmium as o
-import pyproj
-
-EXPIRY_TIME = 946681200 # 2000-01-01 00:00:00
-# width/height of the spherical mercator projection
-SIZE = 40075016.6855784
-
-proj_transformer = pyproj.Transformer.from_crs('epsg:4326', 'epsg:3857', always_xy = True)
-
-class TileCollector(o.SimpleHandler):
-
-    def __init__(self, node_cache, zoom):
-        super(TileCollector, self).__init__()
-        self.node_cache = o.index.create_map("dense_file_array," + node_cache)
-        self.done_nodes = set()
-        self.tile_set = set()
-        self.zoom = zoom
-
-    def add_tile_from_node(self, location):
-        if not location.valid():
-            return
-
-        lat = max(-85, min(85.0, location.lat))
-        x, y = proj_transformer.transform(location.lon, lat)
-
-        # renormalise into unit space [0,1]
-        x = 0.5 + x / SIZE
-        y = 0.5 - y / SIZE
-        # transform into tile space
-        x = x * 2**self.zoom
-        y = y * 2**self.zoom
-        # chop of the fractional parts
-        self.tile_set.add((int(x), int(y), self.zoom))
-
-    def node(self, node):
-        # we put all the nodes into the hash, as it doesn't matter whether the node was
-        # added, deleted or modified - the tile will need updating anyway.
-        self.done_nodes.add(node.id)
-        self.add_tile_from_node(node.location)
-
-    def way(self, way):
-        for n in way.nodes:
-            if not n.ref in self.done_nodes:
-                self.done_nodes.add(n.ref)
-                try:
-                    self.add_tile_from_node(self.node_cache.get(n.ref))
-                except KeyError:
-                    pass # no coordinate
-
-
-def xyz_to_meta(x, y, z, meta_size):
-    """ Return the file name of a meta tile.
-        This must match the definition of xyz to meta in mod_tile.
-    """
-    # mask off the final few bits
-    x = x & ~(meta_size - 1)
-    y = y & ~(meta_size - 1)
-
-    # generate the path
-    path = None
-    for i in range(0, 5):
-        part = str(((x & 0x0f) << 4) | (y & 0x0f))
-        x = x >> 4
-        y = y >> 4
-        if path is None:
-            path = (part + ".meta")
-        else:
-            path = os.path.join(part, path)
-
-    return os.path.join(str(z), path)
-
-
-def expire_meta(meta):
-    """Expire the meta tile by setting the modified time back.
-    """
-    exists = os.path.exists(meta)
-    if exists:
-        os.utime(meta, (EXPIRY_TIME, EXPIRY_TIME))
-    return exists
-
-
-def expire_meta_tiles(options):
-    proc = TileCollector(options.node_cache, options.max_zoom)
-    proc.apply_file(options.inputfile)
-
-    tile_set = proc.tile_set
-
-    # turn all the tiles into expires, putting them in the set
-    # so that we don't expire things multiple times
-    for z in range(options.min_zoom, options.max_zoom + 1):
-        meta_set = set()
-        new_set = set()
-        for xy in tile_set:
-            meta = xyz_to_meta(xy[0], xy[1], xy[2], options.meta_size)
-
-            for tile_dir in options.tile_dir:
-                meta_set.add(os.path.join(tile_dir, meta))
-
-            # add the parent into the set for the next round
-            new_set.add((int(xy[0]/2), int(xy[1]/2), xy[2] - 1))
-
-        # expire all meta tiles
-        expired = 0
-        for meta in meta_set:
-            if expire_meta(meta):
-                expired += 1
-        print("Expired {0} tiles at zoom {1}".format(expired, z))
-
-        # continue with parent tiles
-        tile_set = new_set
-
-if __name__ == '__main__':
-
-    parser = argparse.ArgumentParser(description=__doc__,
-                                     formatter_class=argparse.RawDescriptionHelpFormatter,
-                                     usage='%(prog)s [options] <inputfile>')
-    parser.add_argument('--min', action='store', dest='min_zoom', default=13,
-                        type=int,
-                        help='Minimum zoom for expiry.')
-    parser.add_argument('--max', action='store', dest='max_zoom', default=20,
-                        type=int,
-                        help='Maximum zoom for expiry.')
-    parser.add_argument('-t', action='append', dest='tile_dir', default=None,
-                        required=True,
-                        help='Tile directory (repeat for multiple directories).')
-    parser.add_argument('--meta-tile-size', action='store', dest='meta_size',
-                        default=8, type=int,
-                        help='The size of the meta tile blocks.')
-    parser.add_argument('--node-cache', action='store', dest='node_cache',
-                        default='/store/database/nodes',
-                        help='osm2pgsql flatnode file.')
-    parser.add_argument('inputfile',
-                        help='OSC input file.')
-
-    options = parser.parse_args()
-
-    expire_meta_tiles(options)
diff --git a/cookbooks/tile/files/default/ruby/expire.rb b/cookbooks/tile/files/default/ruby/expire.rb
deleted file mode 100755
index 3d693ad5b..000000000
--- a/cookbooks/tile/files/default/ruby/expire.rb
+++ /dev/null
@@ -1,191 +0,0 @@
-#!/usr/bin/ruby
-
-require "rubygems"
-require "proj4"
-require "xml/libxml"
-require "set"
-require "time"
-
-module Expire
-  # projection object to go from latlon -> spherical mercator
-  PROJ = Proj4::Projection.new(["+proj=merc", "+a=6378137", "+b=6378137",
-                                "+lat_ts=0.0", "+lon_0=0.0", "+x_0=0.0",
-                                "+y_0=0", "+k=1.0", "+units=m",
-                                "+nadgrids=@null", "+no_defs +over"])
-
-  # width/height of the spherical mercator projection
-  SIZE = 40075016.6855784
-  # the size of the meta tile blocks
-  METATILE = 8
-  # the directory root for meta tiles
-  HASH_ROOT = "/tiles/default/".freeze
-  # node cache file
-  NODE_CACHE_FILE = "/store/database/nodes".freeze
-
-  # turns a spherical mercator coord into a tile coord
-  def self.tile_from_merc(point, zoom)
-    # renormalise into unit space [0,1]
-    point.x = 0.5 + point.x / SIZE
-    point.y = 0.5 - point.y / SIZE
-    # transform into tile space
-    point.x = point.x * 2**zoom
-    point.y = point.y * 2**zoom
-    # chop of the fractional parts
-    [point.x.to_int, point.y.to_int, zoom]
-  end
-
-  # turns a latlon -> tile x,y given a zoom level
-  def self.tile_from_latlon(latlon, zoom)
-    # first convert to spherical mercator
-    point = PROJ.forward(latlon)
-    tile_from_merc(point, zoom)
-  end
-
-  # this must match the definition of xyz_to_meta in mod_tile
-  def self.xyz_to_meta(x, y, z)
-    # mask off the final few bits
-    x &= ~(METATILE - 1)
-    y &= ~(METATILE - 1)
-    # generate the path
-    hash_path = (0..4).collect do |i|
-      (((x >> 4 * i) & 0xf) << 4) | ((y >> 4 * i) & 0xf)
-    end.reverse.join("/")
-    z.to_s + "/" + hash_path + ".meta"
-  end
-
-  # time to reset to, some very stupidly early time, before OSM started
-  EXPIRY_TIME = Time.parse("2000-01-01 00:00:00")
-
-  # expire the meta tile by setting the modified time back
-  def self.expire_meta(meta)
-    puts "Expiring #{meta}"
-    File.utime(EXPIRY_TIME, EXPIRY_TIME, meta)
-  end
-
-  def self.expire(change_file, min_zoom, max_zoom, tile_dirs)
-    do_expire(change_file, min_zoom, max_zoom) do |set|
-      new_set = Set.new
-      meta_set = Set.new
-
-      # turn all the tiles into expires, putting them in the set
-      # so that we don't expire things multiple times
-      set.each do |xy|
-        # this has to match the routine in mod_tile
-        meta = xyz_to_meta(xy[0], xy[1], xy[2])
-
-        # check each style working out what needs expiring
-        tile_dirs.each do |tile_dir|
-          meta_set.add(tile_dir + "/" + meta) if File.exist?(tile_dir + "/" + meta)
-        end
-
-        # add the parent into the set for the next round
-        new_set.add([xy[0] / 2, xy[1] / 2, xy[2] - 1])
-      end
-
-      # expire all meta tiles
-      meta_set.each do |meta|
-        expire_meta(meta)
-      end
-
-      # return the new set, consisting of all the parents
-      new_set
-    end
-  end
-
-  def self.do_expire(change_file, min_zoom, max_zoom, &_)
-    # read in the osm change file
-    doc = XML::Document.file(change_file)
-
-    # hash map to contain all the nodes
-    nodes = {}
-
-    # we put all the nodes into the hash, as it doesn't matter whether the node was
-    # added, deleted or modified - the tile will need updating anyway.
-    doc.find("//node").each do |node|
-      lat = node["lat"].to_f
-      lat = -85 if lat < -85
-      lat = 85 if lat > 85
-      point = Proj4::Point.new(Math::PI * node["lon"].to_f / 180,
-                               Math::PI * lat / 180)
-      nodes[node["id"].to_i] = tile_from_latlon(point, max_zoom)
-    end
-
-    # now we look for all the ways that have changed and put all of their nodes into
-    # the hash too. this will add too many nodes, as it is possible a long way will be
-    # changed at only a portion of its length. however, due to the non-local way that
-    # mapnik does text placement, it may stil not be enough.
-    #
-    # also, we miss cases where nodes are deleted from ways where that node is not
-    # itself deleted and the coverage of the point set isn't enough to encompass the
-    # change.
-    node_cache = NodeCache.new(NODE_CACHE_FILE)
-    doc.find("//way/nd").each do |node|
-      node_id = node["ref"].to_i
-
-      next if nodes.include? node_id
-
-      # this is a node referenced but not added, modified or deleted, so it should
-      # still be in the node cache.
-      if (entry = node_cache[node_id])
-        point = Proj4::Point.new(entry.lon, entry.lat)
-        nodes[node_id] = tile_from_merc(point, max_zoom)
-      end
-    end
-    node_cache.close
-
-    # create a set of all the tiles at the maximum zoom level which are touched by
-    # any of the nodes we've collected. we'll create the tiles at other zoom levels
-    # by a simple recursion.
-    set = Set.new nodes.values
-
-    # expire tiles and shrink to the set of parents
-    max_zoom.downto(min_zoom) do |_|
-      # allow the block to work on the set, returning the set at the next
-      # zoom level
-      set = yield set
-    end
-  end
-
-  # wrapper to access the osm2pgsql node cache
-  class NodeCache
-    # node cache entry
-    class Node
-      attr_reader :lon, :lat
-
-      def initialize(lon, lat)
-        @lat = lat.to_f / 100.0
-        @lon = lon.to_f / 100.0
-      end
-    end
-
-    # open the cache
-    def initialize(filename)
-      @cache = File.new(filename, "r")
-
-      throw "Unexpected format" unless @cache.sysread(4).unpack("l").first == 1
-      throw "Unexpected ID size" unless @cache.sysread(4).unpack("l").first == 8
-
-      @max_id = @cache.sysread(8).unpack("q").first
-    end
-
-    # close the cache
-    def close
-      @cache.close
-    end
-
-    # lookup a node
-    def [](id)
-      if id <= @max_id
-        offset = 16 + id * 8
-
-        @cache.sysseek(offset)
-
-        lon, lat = @cache.sysread(8).unpack("ll")
-
-        node = Node.new(lon, lat) if lon != -2147483648 && lat != -2147483648
-      end
-
-      node
-    end
-  end
-end
diff --git a/cookbooks/tile/recipes/default.rb b/cookbooks/tile/recipes/default.rb
index 3966954f8..d302c79ce 100644
--- a/cookbooks/tile/recipes/default.rb
+++ b/cookbooks/tile/recipes/default.rb
@@ -509,174 +509,94 @@ package %w[
   osm2pgsql
   osmium-tool
   pyosmium
-  python3-pyproj
 ]
 
-remote_directory "/usr/local/bin" do
-  source "bin"
-  owner "root"
-  group "root"
-  mode "755"
-  files_owner "root"
-  files_group "root"
-  files_mode "755"
-end
-
 directory "/var/lib/replicate" do
   owner "tile"
   group "tile"
   mode "755"
 end
 
-if node[:tile][:replication][:engine] == "custom"
-  template "/usr/local/bin/expire-tiles" do
-    source "expire-tiles-custom.erb"
-    owner "root"
-    group "root"
-    mode "755"
-  end
-
-  directory "/var/lib/replicate/expire-queue" do
-    owner "tile"
-    group "_renderd"
-    mode "775"
-  end
-
-  template "/usr/local/bin/replicate" do
-    source "replicate-custom.erb"
-    owner "root"
-    group "root"
-    mode "755"
-    variables :postgresql_version => postgresql_version.to_f
-  end
-
-  systemd_service "expire-tiles" do
-    description "Tile dirtying service"
-    type "simple"
-    user "_renderd"
-    exec_start "/usr/local/bin/expire-tiles"
-    nice 10
-    sandbox true
-    read_write_paths tile_directories + [
-                       "/store/database/nodes",
-                       "/var/lib/replicate/expire-queue",
-                       "/var/log/tile"
-                     ]
-  end
-
-  systemd_path "expire-tiles" do
-    description "Tile dirtying trigger"
-    directory_not_empty "/var/lib/replicate/expire-queue"
-  end
-
-  service "expire-tiles.path" do
-    action [:enable, :start]
-    subscribes :restart, "systemd_path[expire-tiles]"
-  end
-
-  systemd_service "replicate" do
-    description "Rendering database replication service"
-    after "postgresql.service"
-    wants "postgresql.service"
-    user "tile"
-    exec_start "/usr/local/bin/replicate"
-    sandbox :enable_network => true
-    restrict_address_families "AF_UNIX"
-    read_write_paths [
-      "/store/database/nodes",
-      "/var/lib/replicate",
-      "/var/log/tile"
-    ]
-    restart "on-failure"
-  end
-
-  service "replicate" do
-    action [:enable, :start]
-    subscribes :restart, "template[/usr/local/bin/replicate]"
-    subscribes :restart, "systemd_service[replicate]"
-  end
-elsif node[:tile][:replication][:engine] == "osm2pgsql"
-  template "/usr/local/bin/expire-tiles" do
-    source "expire-tiles-osm2pgsql.erb"
-    owner "root"
-    group "root"
-    mode "755"
-  end
+template "/usr/local/bin/expire-tiles" do
+  source "expire-tiles.erb"
+  owner "root"
+  group "root"
+  mode "755"
+end
 
-  directory "/var/lib/replicate/expire-queue" do
-    owner "tile"
-    group "_renderd"
-    mode "775"
-  end
+directory "/var/lib/replicate/expire-queue" do
+  owner "tile"
+  group "_renderd"
+  mode "775"
+end
 
-  template "/usr/local/bin/replicate" do
-    source "replicate-osm2pgsql.erb"
-    owner "root"
-    group "root"
-    mode "755"
-  end
+template "/usr/local/bin/replicate" do
+  source "replicate.erb"
+  owner "root"
+  group "root"
+  mode "755"
+end
 
-  systemd_service "expire-tiles" do
-    description "Tile dirtying service"
-    type "simple"
-    user "_renderd"
-    exec_start "/usr/local/bin/expire-tiles"
-    nice 10
-    sandbox true
-    restrict_address_families "AF_UNIX"
-    read_write_paths tile_directories + [
-                       "/var/lib/replicate/expire-queue"
-                     ]
-  end
+systemd_service "expire-tiles" do
+  description "Tile dirtying service"
+  type "simple"
+  user "_renderd"
+  exec_start "/usr/local/bin/expire-tiles"
+  nice 10
+  sandbox true
+  restrict_address_families "AF_UNIX"
+  read_write_paths tile_directories + [
+                     "/var/lib/replicate/expire-queue"
+                   ]
+end
 
-  systemd_path "expire-tiles" do
-    description "Tile dirtying trigger"
-    directory_not_empty "/var/lib/replicate/expire-queue"
-  end
+systemd_path "expire-tiles" do
+  description "Tile dirtying trigger"
+  directory_not_empty "/var/lib/replicate/expire-queue"
+end
 
-  service "expire-tiles.path" do
-    action [:enable, :start]
-    subscribes :restart, "systemd_path[expire-tiles]"
-  end
+service "expire-tiles.path" do
+  action [:enable, :start]
+  subscribes :restart, "systemd_path[expire-tiles]"
+end
 
-  template "/usr/local/bin/replicate-post" do
-    source "replicate-post.erb"
-    owner "root"
-    group "root"
-    mode "755"
-  end
+template "/usr/local/bin/replicate-post" do
+  source "replicate-post.erb"
+  owner "root"
+  group "root"
+  mode "755"
+end
 
-  osm2pgsql_arguments = %w[
+osm2pgsql_arguments = %w[
     --number-processes=1
     --log-progress=false
     --expire-tiles=13-19
     --expire-output=/var/lib/replicate/dirty-tiles.txt
   ]
 
-  osm2pgsql_arguments.append("--multi-geometry") if node[:tile][:database][:multi_geometry]
-  osm2pgsql_arguments.append("--hstore") if node[:tile][:database][:hstore]
-  osm2pgsql_arguments.append("--tag-transform-script=#{node[:tile][:database][:tag_transform_script]}") if node[:tile][:database][:tag_transform_script]
+osm2pgsql_arguments.append("--multi-geometry") if node[:tile][:database][:multi_geometry]
+osm2pgsql_arguments.append("--hstore") if node[:tile][:database][:hstore]
+osm2pgsql_arguments.append("--tag-transform-script=#{node[:tile][:database][:tag_transform_script]}") if node[:tile][:database][:tag_transform_script]
 
-  systemd_service "replicate" do
-    description "Rendering database replication service"
-    after "postgresql.service"
-    wants "postgresql.service"
-    user "tile"
-    exec_start "/usr/local/bin/replicate"
-    sandbox :enable_network => true
-    restrict_address_families "AF_UNIX"
-    read_write_paths [
-      "/store/database/nodes",
-      "/var/lib/replicate"
-    ]
-    restart "on-failure"
-  end
+systemd_service "replicate" do
+  description "Rendering database replication service"
+  after "postgresql.service"
+  wants "postgresql.service"
+  user "tile"
+  exec_start "/usr/local/bin/replicate"
+  sandbox :enable_network => true
+  restrict_address_families "AF_UNIX"
+  read_write_paths [
+    "/store/database/nodes",
+    "/var/lib/replicate"
+  ]
+  restart "on-failure"
+end
 
-  service "replicate" do
-    action [:enable, :start]
-    subscribes :restart, "template[/usr/local/bin/replicate]"
-    subscribes :restart, "systemd_service[replicate]"
-  end
+service "replicate" do
+  action [:enable, :start]
+  subscribes :restart, "template[/usr/local/bin/replicate]"
+  subscribes :restart, "systemd_service[replicate]"
 end
 
 template "/usr/local/bin/render-lowzoom" do
diff --git a/cookbooks/tile/templates/default/expire-tiles-custom.erb b/cookbooks/tile/templates/default/expire-tiles-custom.erb
deleted file mode 100644
index 3a023d6b2..000000000
--- a/cookbooks/tile/templates/default/expire-tiles-custom.erb
+++ /dev/null
@@ -1,15 +0,0 @@
-#!/usr/bin/ruby
-
-# DO NOT EDIT - This file is being maintained by Chef
-
-args = [
-<% node[:tile][:styles].each do |name,details| -%>
-  "-t", "/srv/tile.openstreetmap.org/tiles/<%= name %>",
-<% end -%>
-  "--min", "13",
-  "--max", "<%= node[:tile][:styles].collect { |n,d| d[:max_zoom] }.max %>"
-]
-
-Dir.glob("/var/lib/replicate/expire-queue/changes-*.gz").sort.each do |f|
-   system("/usr/local/bin/expire-tiles-single", *args, f) && File::unlink(f)
-end
diff --git a/cookbooks/tile/templates/default/expire-tiles-osm2pgsql.erb b/cookbooks/tile/templates/default/expire-tiles.erb
similarity index 100%
rename from cookbooks/tile/templates/default/expire-tiles-osm2pgsql.erb
rename to cookbooks/tile/templates/default/expire-tiles.erb
diff --git a/cookbooks/tile/templates/default/replicate-custom.erb b/cookbooks/tile/templates/default/replicate-custom.erb
deleted file mode 100644
index 4612f5f68..000000000
--- a/cookbooks/tile/templates/default/replicate-custom.erb
+++ /dev/null
@@ -1,104 +0,0 @@
-#!/bin/bash
-
-# DO NOT EDIT - This file is being maintained by Chef
-
-# 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
-
-# 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
-
-# Install exit handler
-trap onexit EXIT
-
-# Loop indefinitely
-while true
-do
-    # Work out the name of the next file
-    file="changes-$(cat sequence.txt).osc.gz"
-
-    # Save sequence file so we can rollback if an error occurs
-    cp sequence.txt sequence-prev.txt
-
-    # Fetch the next set of changes
-    pyosmium-get-changes --server=<%= node[:tile][:replication][:url] %> --sequence-file=sequence.txt --outfile=${file}
-
-    # Save exit status
-    status=$?
-
-    # Check for errors
-    if [ $status -eq 0 ]
-    then
-        # Enable exit on error
-        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 --log-progress=false \
-<% 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 -%>
-                  ${file}
-
-        # No need to rollback now
-        rm sequence-prev.txt
-
-        # Get buffer count
-        buffers=$(osmium fileinfo --extended --get=data.buffers.count ${file})
-
-        # If this diff has content mark it as the latest diff
-        if [ $buffers -gt 0 ]
-        then
-            ln -f ${file} changes-latest.osc.gz
-        fi
-
-        # Queue these changes for expiry processing
-        ln ${file} expire-queue/${file}
-
-        # Delete old downloads
-        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"
-
-        # Remove any output that was produced
-        rm -f ${file}
-
-        # Wait five minutes and have another go
-        sleep 300
-    fi
-done
diff --git a/cookbooks/tile/templates/default/replicate-osm2pgsql.erb b/cookbooks/tile/templates/default/replicate.erb
similarity index 100%
rename from cookbooks/tile/templates/default/replicate-osm2pgsql.erb
rename to cookbooks/tile/templates/default/replicate.erb
-- 
2.39.5