Revert "Attempt to read paths from content addressed storage if available"

app/models/cocina.rb

@@ -44,13 +44,6 @@ def find_file(file_name)
              .find { |file| file['filename'] == file_name } || raise(ActionController::MissingFile, "File not found '#{file_name}'")
   end
 
-  def find_file_md5(file_name)
-    file_node = find_file(file_name)
-    file_node.fetch('hasMessageDigests')
-             .find { |digest_node| digest_node.fetch('type') == 'md5' }
-             .fetch('digest')
-  end
-
   def thumbnail_file
     data.dig('structural', 'contains')
         .lazy.flat_map { |file_set| file_set.dig('structural', 'contains') }

app/models/stacks_file.rb

@@ -9,7 +9,6 @@ class StacksFile
   def initialize(file_name:, cocina:)
     @file_name = file_name
     @cocina = cocina
-    validate!
   end
 
   attr_reader :file_name, :cocina
@@ -18,7 +17,7 @@ def id
     cocina.druid
   end
 
-  validates :file_name, presence: true
+  validates :id, format: { with: StorageRoot::DRUID_PARTS_PATTERN }
 
   # Some files exist but have unreadable permissions, treat these as non-existent
   def readable?
@@ -41,7 +40,6 @@ def path
     @path ||= storage_root.absolute_path
   end
 
-  # Used as the IIIF identifier for retrieving this file from the image server
   def treeified_path
     storage_root.relative_path
   end

app/models/storage_root.rb

@@ -13,9 +13,21 @@ def initialize(file_name:, cocina:)
 
   delegate :druid, to: :cocina
 
-  delegate :absolute_path, to: :path_finder
+  def druid_parts
+    @druid_parts ||= druid.match(DRUID_PARTS_PATTERN)
+  end
+
+  def absolute_path
+    return unless relative_path
 
-  delegate :relative_path, to: :path_finder
+    path_finder.absolute_path.to_s
+  end
+
+  def relative_path
+    return unless druid_parts && file_name
+
+    path_finder.relative_path.to_s
+  end
 
   def treeified_id
     File.join(druid_parts[1..4])
@@ -26,41 +38,26 @@ def treeified_id
   attr_reader :cocina, :file_name
 
   def path_finder
-    @path_finder ||= path_finder_class.new(treeified_id:, file_name:, cocina:)
+    @path_finder ||= path_finder_class.new(treeified_id:, druid:, file_name:)
   end
 
   def path_finder_class
     LegacyPathFinder
   end
 
-  def druid_parts
-    @druid_parts ||= druid.match(DRUID_PARTS_PATTERN)
-  end
-
   # Calculate file paths in the legacy Stacks structure
   class LegacyPathFinder
-    def initialize(treeified_id:, file_name:, cocina:)
+    def initialize(treeified_id:, file_name:, druid:) # rubocop:disable Lint/UnusedMethodArgument
       @treeified_id = treeified_id
       @file_name = file_name
-      @cocina = cocina
     end
 
-    # As this is used for external service URLs (Canteloupe image server), we don't want to put content addressable path here.'
     def relative_path
       File.join(@treeified_id, @file_name)
     end
 
     def absolute_path
-      return content_addressable_path if File.exist?(content_addressable_path)
-
       File.join(Settings.stacks.storage_root, relative_path)
     end
-
-    def content_addressable_path
-      @content_addressable_path ||= begin
-        md5 = @cocina.find_file_md5(@file_name)
-        File.join(Settings.stacks.content_addressable_storage_root, @treeified_id, @cocina.druid, 'content', md5)
-      end
-    end
   end
 end

config/settings.yml

@@ -4,7 +4,6 @@ features:
 
 stacks:
   storage_root: /stacks
-  content_addressable_storage_root: /stacks/content_addressable
 
 imageserver:
   base_uri: "http://imageserver-prod.stanford.edu/iiif/2/"

spec/controllers/file_controller_spec.rb

@@ -8,7 +8,26 @@
   end
 
   let(:public_json) do
-    Factories.cocina_with_file
+    {
+      'externalIdentifier' => druid,
+      'structural' => {
+        'contains' => [
+          {
+            'structural' => {
+              'contains' => [
+                {
+                  'filename' => 'image.jp2',
+                  'access' => {
+                    'view' => 'world',
+                    'download' => 'world'
+                  }
+                }
+              ]
+            }
+          }
+        ]
+      }
+    }
   end
 
   describe '#show' do

spec/controllers/legacy_image_service_controller_spec.rb

@@ -9,7 +9,6 @@
 
   let(:public_json) do
     {
-      'externalIdentifier' => 'druid:nr349ct7889',
       'structural' => {
         'contains' => [
           {

spec/models/stacks_file_spec.rb

@@ -5,26 +5,29 @@
 RSpec.describe StacksFile do
   let(:druid) { 'nr349ct7889' }
   let(:file_name) { 'image.jp2' }
-  let(:cocina) { Cocina.new(public_json) }
+  let(:cocina) {  Cocina.new({ 'externalIdentifier' => druid }) }
   let(:instance) { described_class.new(file_name:, cocina:) }
   let(:path) { storage_root.absolute_path }
   let(:storage_root) { StorageRoot.new(cocina:, file_name:) }
-  let(:public_json) { Factories.cocina_with_file }
-
-  context 'with a missing file name' do
-    let(:file_name) { nil }
-
-    it 'raises an error' do
-      expect { instance }.to raise_error ActiveModel::ValidationError
-    end
-  end
 
   describe '#path' do
     subject { instance.path }
 
     it 'is the druid tree path to the file' do
       expect(subject).to eq(path)
     end
+
+    context 'with a malformed druid' do
+      let(:druid) { 'abcdef' }
+
+      it { is_expected.to be_nil }
+    end
+
+    context 'with a missing file name' do
+      let(:file_name) { nil }
+
+      it { is_expected.to be_nil }
+    end
   end
 
   describe '#readable?' do

spec/rails_helper.rb

@@ -11,8 +11,6 @@
 require 'spec_helper'
 require 'rspec/rails'
 require 'capybara/rails'
-
-require_relative 'factories/cocina'
 # Add additional requires below this line. Rails is not loaded until this point!
 
 # Requires supporting ruby files with custom matchers and macros, etc, in

spec/requests/file_auth_request_spec.rb

@@ -25,7 +25,26 @@
     # NOTE:  stanford only + location rights tested under location context
     context 'stanford only (no location qualifications)' do
       let(:public_json) do
-        Factories.cocina_with_file(file_access: { 'view' => 'stanford', 'download' => 'stanford' })
+        {
+          'externalIdentifier' => druid,
+          'structural' => {
+            'contains' => [
+              {
+                'structural' => {
+                  'contains' => [
+                    {
+                      'filename' => file_name,
+                      'access' => {
+                        'view' => 'stanford',
+                        'download' => 'stanford'
+                      }
+                    }
+                  ]
+                }
+              }
+            ]
+          }
+        }
       end
 
       context 'webauthed user' do
@@ -50,8 +69,27 @@
     context 'location' do
       context 'not stanford qualified in any way' do
         let(:public_json) do
-          Factories.cocina_with_file(file_access: { 'view' => 'location-based', 'download' => 'location-based',
-                                                    'location' => 'location1' })
+          {
+            'externalIdentifier' => druid,
+            'structural' => {
+              'contains' => [
+                {
+                  'structural' => {
+                    'contains' => [
+                      {
+                        'filename' => file_name,
+                        'access' => {
+                          'view' => 'location-based',
+                          'download' => 'location-based',
+                          'location' => 'location1'
+                        }
+                      }
+                    ]
+                  }
+                }
+              ]
+            }
+          }
         end
 
         it 'allows when user in location' do

spec/requests/file_spec.rb

@@ -10,7 +10,26 @@
   let(:druid) { 'nr349ct7889' }
   let(:file_name) { 'image.jp2' }
   let(:public_json) do
-    Factories.cocina_with_file
+    {
+      'externalIdentifier' => druid,
+      'structural' => {
+        'contains' => [
+          {
+            'structural' => {
+              'contains' => [
+                {
+                  'filename' => file_name,
+                  'access' => {
+                    'view' => 'world',
+                    'download' => 'world'
+                  }
+                }
+              ]
+            }
+          }
+        ]
+      }
+    }
   end
 
   describe 'OPTIONS options' do
@@ -25,7 +44,26 @@
   describe 'GET file with slashes in filename' do
     let(:file_name) { 'path/to/image.jp2' }
     let(:public_json) do
-      Factories.cocina_with_file(file_name:)
+      {
+        'externalIdentifier' => druid,
+        'structural' => {
+          'contains' => [
+            {
+              'structural' => {
+                'contains' => [
+                  {
+                    'filename' => file_name,
+                    'access' => {
+                      'view' => 'world',
+                      'download' => 'world'
+                    }
+                  }
+                ]
+              }
+            }
+          ]
+        }
+      }
     end
 
     before do