Allow looking up keys in the web ui #264

app/controllers/application_controller.rb

@@ -40,6 +40,13 @@ def load_environments
     authorize! :show, @environment
   end
 
+  def load_nodes
+    @nodes = Node.all
+    @nodes.select! { |n| current_user.may_access?(n) }
+    @node = Node.find(params[:node_id])
+    authorize! :show, @node
+  end
+
   def display_error_page(error)
     @error = error
     render template: "page/error", status: :internal_server_error

app/controllers/keys_controller.rb

@@ -42,13 +42,4 @@ def destroy
     redirect_to environment_node_key_path(@environment, @node, @key),
       notice: "Value was removed successfully"
   end
-
-  private
-
-  def load_nodes
-    @nodes = Node.all
-    @nodes.select! { |n| current_user.may_access?(n) }
-    @node = Node.find(params[:node_id])
-    authorize! :show, @node
-  end
 end

app/controllers/lookups_controller.rb

@@ -0,0 +1,18 @@
+class LookupsController < ApplicationController
+  before_action :load_environments
+  before_action :load_nodes
+  before_action :load_keys
+
+  def show
+    @result = @key.lookup(@node)
+  end
+
+  private
+
+  def load_keys
+    @keys = Key.all_for(@node, environment: @environment)
+    @keys.select! { |k| current_user.may_access?(k) }
+    @key = Key.new(environment: @environment, name: params[:key_id])
+    authorize! :show, @key
+  end
+end

app/models/key.rb

@@ -28,6 +28,10 @@ def lookup_options(node)
     @lookup_options ||= load_lookup_options(node)
   end
 
+  def lookup(node)
+    hiera_data.lookup(name, facts: node.facts)
+  end
+
   def to_param
     name
   end

app/views/keys/show.html.erb

@@ -8,6 +8,10 @@
     <div class="text-end pb-2">
         <b>Lookup options:</b>
         <span class="badge bg-primary"><%= @key.lookup_options(@node) %></span>
+        <button type="button" class="btn btn-secondary btn-sm" data-bs-toggle="modal" data-bs-target="#lookup-result">
+          <%= icon "search" %>
+          Show lookup result
+        </button>
     </div>
     <% index = 0 %>
     <% @environment.hierarchies.each do |hierarchy| %>
@@ -64,3 +68,22 @@
     <% end %>
   </div>
 </div>
+
+<div class="modal fade" id="lookup-result" tabindex="-1" aria-labelledby="lookup-result-label" aria-hidden="true">
+  <div class="modal-dialog modal-dialog-centered">
+    <div class="modal-content">
+      <div class="modal-header">
+        <h1 class="modal-title fs-5" id="lookup-result-label">Lookup result for <code><%= @key.name %></code></h1>
+        <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
+      </div>
+      <div class="modal-body">
+        <%= turbo_frame_tag "lookup-result-frame", src: environment_node_key_lookup_path(@environment, @node, @key), loading: "lazy" do %>
+          Loading...
+        <% end %>
+      </div>
+      <div class="modal-footer">
+        <button type="button" class="btn btn-secondary" data-bs-dismiss="modal">Close</button>
+      </div>
+    </div>
+  </div>
+</div>

app/views/layouts/application.html.erb

@@ -51,5 +51,6 @@
         </a>
       </div>
     </footer>
+    <%= yield :modals %>
   </body>
 </html>

app/views/lookups/show.html.erb

@@ -0,0 +1,5 @@
+<%= turbo_frame_tag "lookup-result-frame" do %>
+  <code><pre>
+    <%= @result.to_yaml.sub(/^---$/, "") %>
+  </pre></code>
+<% end %>

config/routes.rb

@@ -30,14 +30,18 @@
 
     resources :nodes, only: :index, constraints: { id: /.+/ } do
       if Rails.configuration.hdm['read_only']
-        resources :keys, only: [:index, :show]
+        resources :keys, only: [:index, :show] do
+          resource :lookup, only: [:show]
+        end
       else
         resources :keys, only: [:index, :show, :update, :destroy] do
           resources :hierarchies, only: [] do
             resources :data_files, only: [] do
               resource :value, only: [:update, :destroy]
             end
           end
+
+          resource :lookup, only: [:show]
         end
       end
     end

test/controllers/lookups_controller_test.rb

@@ -0,0 +1,7 @@
+require "test_helper"
+
+class LookupsControllerTest < ActionDispatch::IntegrationTest
+  # test "the truth" do
+  #   assert true
+  # end
+end