Added SLIM gems

Handle missing SecurityContextHolder
Made `application_setup.rb` optional.

build.gradle

@@ -7,8 +7,8 @@ plugins {
 }
 
 group 'no.datek'
-version '0.18.3'
-final String JRUBY_VERSION = '9.4.5.0';
+version '0.19.0'
+final String JRUBY_VERSION = '9.4.6.0';
 
 repositories {
     mavenLocal()
@@ -17,7 +17,8 @@ repositories {
 
 dependencies {
     implementation 'org.springframework.boot:spring-boot-starter-web:2.7.6'
-//    implementation "org.jruby:jruby:$JRUBY_VERSION"
+    implementation 'javax.servlet:javax.servlet-api:3.1.0'
+    implementation "org.jruby:jruby:$JRUBY_VERSION"
 }
 
 java {

gems.locked

@@ -0,0 +1,33 @@
+GEM
+  remote: https://rubygems.org/
+  specs:
+    concurrent-ruby (1.2.2)
+    ffi (1.15.5-java)
+    ffi (1.15.5-x64-mingw-ucrt)
+    kramdown (2.4.0)
+      rexml
+    listen (3.8.0)
+      rb-fsevent (~> 0.10, >= 0.10.3)
+      rb-inotify (~> 0.9, >= 0.9.10)
+    rb-fsevent (0.11.2)
+    rb-inotify (0.10.1)
+      ffi (~> 1.0)
+    rexml (3.2.6)
+    slim (5.1.1)
+      temple (~> 0.10.0)
+      tilt (>= 2.1.0)
+    temple (0.10.2)
+    tilt (2.2.0)
+
+PLATFORMS
+  universal-java-17
+  x64-mingw-ucrt
+
+DEPENDENCIES
+  concurrent-ruby
+  kramdown
+  listen
+  slim
+
+BUNDLED WITH
+   2.4.19

gems.rb

@@ -0,0 +1,8 @@
+# frozen_string_literal: true
+
+source 'https://rubygems.org'
+
+gem 'concurrent-ruby'
+gem 'kramdown'
+gem 'listen'
+gem 'slim'

src/main/java/no/datek/slim/AssetsController.java

@@ -1,5 +1,6 @@
 package no.datek.slim;
 
+import java.nio.file.Path;
 import javax.servlet.http.HttpServletRequest;
 import org.springframework.core.io.FileSystemResource;
 import org.springframework.http.ContentDisposition;
@@ -12,8 +13,6 @@
 import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.ResponseBody;
-import java.nio.file.Path;
-import java.nio.file.Paths;
 
 @Controller
 @RequestMapping(AssetsController.PAGE_PATH)

src/main/resources/gems/concurrent-ruby/concurrent-ruby.rb

@@ -0,0 +1,5 @@
+# This file is here so that there is a file with the same name as the gem that
+# can be required by Bundler.require. Applications should normally
+# require 'concurrent'.
+
+require_relative "concurrent"

src/main/resources/gems/concurrent-ruby/concurrent.rb

@@ -0,0 +1,134 @@
+require 'concurrent/version'
+require 'concurrent/constants'
+require 'concurrent/errors'
+require 'concurrent/configuration'
+
+require 'concurrent/atomics'
+require 'concurrent/executors'
+require 'concurrent/synchronization'
+
+require 'concurrent/atomic/atomic_markable_reference'
+require 'concurrent/atomic/atomic_reference'
+require 'concurrent/agent'
+require 'concurrent/atom'
+require 'concurrent/array'
+require 'concurrent/hash'
+require 'concurrent/set'
+require 'concurrent/map'
+require 'concurrent/tuple'
+require 'concurrent/async'
+require 'concurrent/dataflow'
+require 'concurrent/delay'
+require 'concurrent/exchanger'
+require 'concurrent/future'
+require 'concurrent/immutable_struct'
+require 'concurrent/ivar'
+require 'concurrent/maybe'
+require 'concurrent/mutable_struct'
+require 'concurrent/mvar'
+require 'concurrent/promise'
+require 'concurrent/scheduled_task'
+require 'concurrent/settable_struct'
+require 'concurrent/timer_task'
+require 'concurrent/tvar'
+require 'concurrent/promises'
+
+require 'concurrent/thread_safe/synchronized_delegator'
+require 'concurrent/thread_safe/util'
+
+require 'concurrent/options'
+
+# @!macro internal_implementation_note
+#
+#   @note **Private Implementation:** This abstraction is a private, internal
+#     implementation detail. It should never be used directly.
+
+# @!macro monotonic_clock_warning
+#
+#   @note Time calculations on all platforms and languages are sensitive to
+#     changes to the system clock. To alleviate the potential problems
+#     associated with changing the system clock while an application is running,
+#     most modern operating systems provide a monotonic clock that operates
+#     independently of the system clock. A monotonic clock cannot be used to
+#     determine human-friendly clock times. A monotonic clock is used exclusively
+#     for calculating time intervals. Not all Ruby platforms provide access to an
+#     operating system monotonic clock. On these platforms a pure-Ruby monotonic
+#     clock will be used as a fallback. An operating system monotonic clock is both
+#     faster and more reliable than the pure-Ruby implementation. The pure-Ruby
+#     implementation should be fast and reliable enough for most non-realtime
+#     operations. At this time the common Ruby platforms that provide access to an
+#     operating system monotonic clock are MRI 2.1 and above and JRuby (all versions).
+#
+#   @see http://linux.die.net/man/3/clock_gettime Linux clock_gettime(3)
+
+# @!macro copy_options
+#
+#   ## Copy Options
+#
+#   Object references in Ruby are mutable. This can lead to serious
+#   problems when the {#value} of an object is a mutable reference. Which
+#   is always the case unless the value is a `Fixnum`, `Symbol`, or similar
+#   "primitive" data type. Each instance can be configured with a few
+#   options that can help protect the program from potentially dangerous
+#   operations. Each of these options can be optionally set when the object
+#   instance is created:
+#
+#   * `:dup_on_deref` When true the object will call the `#dup` method on
+#     the `value` object every time the `#value` method is called
+#     (default: false)
+#   * `:freeze_on_deref` When true the object will call the `#freeze`
+#     method on the `value` object every time the `#value` method is called
+#     (default: false)
+#   * `:copy_on_deref` When given a `Proc` object the `Proc` will be run
+#     every time   the `#value` method is called. The `Proc` will be given
+#     the current `value` as its only argument and the result returned by
+#     the block will be the return   value of the `#value` call. When `nil`
+#     this option will be ignored (default: nil)
+#
+#   When multiple deref options are set the order of operations is strictly defined.
+#   The order of deref operations is:
+#   * `:copy_on_deref`
+#   * `:dup_on_deref`
+#   * `:freeze_on_deref`
+#
+#   Because of this ordering there is no need to `#freeze` an object created by a
+#   provided `:copy_on_deref` block. Simply set `:freeze_on_deref` to `true`.
+#   Setting both `:dup_on_deref` to `true` and `:freeze_on_deref` to `true` is
+#   as close to the behavior of a "pure" functional language (like Erlang, Clojure,
+#   or Haskell) as we are likely to get in Ruby.
+
+# @!macro deref_options
+#
+#   @option opts [Boolean] :dup_on_deref (false) Call `#dup` before
+#     returning the data from {#value}
+#   @option opts [Boolean] :freeze_on_deref (false) Call `#freeze` before
+#     returning the data from {#value}
+#   @option opts [Proc] :copy_on_deref (nil) When calling the {#value}
+#     method, call the given proc passing the internal value as the sole
+#     argument then return the new value returned from the proc.
+
+# @!macro executor_and_deref_options
+#
+#   @param [Hash] opts the options used to define the behavior at update and deref
+#     and to specify the executor on which to perform actions
+#   @option opts [Executor] :executor when set use the given `Executor` instance.
+#     Three special values are also supported: `:io` returns the global pool for
+#     long, blocking (IO) tasks, `:fast` returns the global pool for short, fast
+#     operations, and `:immediate` returns the global `ImmediateExecutor` object.
+#   @!macro deref_options
+
+# @!macro warn.edge
+#   @api Edge
+#   @note **Edge Features** are under active development and may change frequently.
+#
+#     -   Deprecations are not added before incompatible changes.
+#     -   Edge version: _major_ is always 0, _minor_ bump means incompatible change,
+#         _patch_ bump means compatible change.
+#     -   Edge features may also lack tests and documentation.
+#     -   Features developed in `concurrent-ruby-edge` are expected to move
+#         to `concurrent-ruby` when finalised.
+
+
+# {include:file:README.md}
+module Concurrent
+end