Add support for systemd path units

diff --git a/cookbooks/systemd/resources/path.rb b/cookbooks/systemd/resources/path.rb
new file mode 100644 (file)
index 0000000..a2838e1
--- /dev/null
+++ b/cookbooks/systemd/resources/path.rb
@@ -0,0 +1,68 @@
+#
+# Cookbook Name:: systemd
+# Resource:: systemd_path
+#
+# Copyright 2017, OpenStreetMap Foundation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+default_action :create
+
+property :name, String
+property :description, String, :required => true
+property :after, [String, Array]
+property :wants, [String, Array]
+property :path_exists, [String, Array]
+property :path_exists_glob, [String, Array]
+property :path_changed, [String, Array]
+property :path_modified, [String, Array]
+property :directory_not_empty, [String, Array]
+property :unit, String
+property :make_directory, [TrueClass, FalseClass]
+property :directory_mode, Integer
+
+action :create do
+  path_variables = new_resource.to_hash
+
+  template "/etc/systemd/system/#{name}.path" do
+    cookbook "systemd"
+    source "path.erb"
+    owner "root"
+    group "root"
+    mode 0o644
+    variables path_variables
+  end
+
+  execute "systemctl-reload-#{name}.path" do
+    action :nothing
+    command "systemctl daemon-reload"
+    user "root"
+    group "root"
+    subscribes :run, "template[/etc/systemd/system/#{name}.path]"
+  end
+end
+
+action :delete do
+  file "/etc/systemd/system/#{name}.path" do
+    action :delete
+  end
+
+  execute "systemctl-reload-#{name}.path" do
+    action :nothing
+    command "systemctl daemon-reload"
+    user "root"
+    group "root"
+    subscribes :run, "file[/etc/systemd/system/#{name}.path]"
+  end
+end

diff --git a/cookbooks/systemd/templates/default/path.erb b/cookbooks/systemd/templates/default/path.erb
new file mode 100644 (file)
index 0000000..8d0852b
--- /dev/null
+++ b/cookbooks/systemd/templates/default/path.erb
@@ -0,0 +1,37 @@
+# DO NOT EDIT - This file is being maintained by Chef
+
+[Unit]
+Description=<%= @description %>
+<% if @after -%>
+After=<%= Array(@after).join(" ") %>
+<% end -%>
+<% if @wants -%>
+Wants=<%= Array(@wants).join(" ") %>
+<% end -%>
+
+[Path]
+<% Array(@path_exists).each do |path| -%>
+PathExists=<%= path %>
+<% end -%>
+<% Array(@path_exists_glob).each do |path| -%>
+PathExistsGlob=<%= path %>
+<% end -%>
+<% Array(@path_changed).each do |path| -%>
+PathChanged=<%= path %>
+<% end -%>
+<% Array(@path_modified).each do |path| -%>
+PathModified=<%= path %>
+<% end -%>
+<% Array(@directory_not_empty).each do |path| -%>
+DirectoryNotEmpty=<%= path %>
+<% end -%>
+Unit=<%= @unit %>
+<% if @make_directory -%>
+MakeDirectory=<%= @make_directory %>
+<% end -%>
+<% if @directory_mode -%>
+DirectoryMode=<%= sprintf("0%o", @directory_mode) %>
+<% end -%>
+
+[Install]
+WantedBy=multi-user.target