Add support for configuring the Java heap size

The default values for this are set in wrapper.conf but can be overridden in
user.properties.

README.md

@@ -198,6 +198,8 @@ for more information about these attributes.
 | `ephemeral` | `Boolean` | When `true`, the Collector will be deleted after goes offline for a certain period of time | `false` | `false` | `:install_and_configure`, `:configure` |
 | `clobber` | `Boolean` | When `true`, if there is any existing Collector with the same name, that Collector will be deleted | `false` | `false` | `:install_and_configure`, `:configure` |
 | `disable_script_source` | `Boolean` | If your organization's internal policies restrict the use of scripts, you can disable the creation of script-based Script Sources. When this parameter is passed, this option is removed from the Sumo Logic Web Application, and Script Source cannot be configured | `false` | `false` | `:install_and_configure`, `:configure` |
+| `wrapper_java_initmemory | `Integer` | Override the initial Java heap size | `nil` | `false` | `:configure |
+| `wrapper_java_maxmemory | `Integer` | Override the maximum Java heap size | `nil` | `false` | `:configure |
 | `runas_username` | `String` | Which user the daemon will run as | `nil` | `false` | `:install_and_configure`, `:install` |
 | `winrunas_password` | `String` | On Windows, the password for the user the service will run as | `nil` | `false` | `:install_and_configure`, `:install` |
 | `skip_registration` | `Boolean` | When `true` the collector will not register upon installation | `false` | `nil` | `:install_and_configure` |

resources/default.rb

@@ -32,6 +32,8 @@ attribute :sync_sources, kind_of: String, default: nil
 attribute :ephemeral, kind_of: [TrueClass, FalseClass], default: false
 attribute :clobber, kind_of: [TrueClass, FalseClass], default: false
 attribute :disable_script_source, kind_of: [TrueClass, FalseClass], default: false
+attribute :wrapper_java_initmemory, kind_of: Integer
+attribute :wrapper_java_maxmemory, kind_of: Integer
 
 # Misc
 attribute :installed, kind_of: [TrueClass, FalseClass], default: false

templates/default/user.properties.erb

@@ -27,3 +27,5 @@ name=<%= @resource.collector_name %>
 <%= "ephemeral=#{@resource.ephemeral}" unless @resource.ephemeral.nil? %>
 <%= "clobber=#{@resource.clobber}" unless @resource.clobber.nil? %>
 <%= "disableScriptSource=#{@resource.disable_script_source}" unless @resource.disable_script_source.nil? %>
+<%= "wrapper.java.initmemory=#{@resource.wrapper_java_initmemory}" unless @resource.wrapper_java_initmemory.nil? %>
+<%= "wrapper.java.maxmemory=#{@resource.wrapper_java_maxmemory}" unless @resource.wrapper_java_maxmemory.nil? %>