Set secret_key_base early enough for rails processes

We don't use secret_key_base like vanilla rails. We implemented secrets through
MiqPassword before any of this existed in rails.  Our only things currently going
through rails secrets perhaps is the provider vcr cassette information.

Rails 7.1 asserts secret_key_base is now set and set during rails boot fairly early.

So, now, we can't only set this for puma based workers, but all rails processes.
We also, must move this logic to be done earlier during boot.  It was found that
after eager load allows us to leverage autoload and access the database, both
are required in order to fetch the secrets from the database.

Move over the logic for rails console so it can use a dummy secret key base.

Move the tests to a vmdb/initializer test.

Co-Authored-By: Jason Frey <fryguy9@gmail.com>

app/models/mixins/miq_web_server_worker_mixin.rb

@@ -18,25 +18,8 @@ def binding_address
       BINDING_ADDRESS
     end
 
-    def preload_for_console
-      configure_secret_token(SecureRandom.hex(64))
-    end
-
     def preload_for_worker_role
       raise "Expected database to be seeded via `rake db:seed`." unless EvmDatabase.seeded_primordially?
-
-      configure_secret_token
-    end
-
-    def configure_secret_token(token = MiqDatabase.first.session_secret_token)
-      return if Rails.application.config.secret_key_base
-
-      Rails.application.config.secret_key_base = token
-
-      # To set a secret token after the Rails.application is initialized,
-      # we need to reset the secrets since they are cached:
-      # https://github.com/rails/rails/blob/7-0-stable/railties/lib/rails/application.rb#L392-L404
-      Rails.application.secrets = nil if Rails.version < "7.1"
     end
 
     def rails_server

config/application.rb

@@ -209,6 +209,11 @@ class Application < Rails::Application
       end
     end
 
+    # Run after code is eager loaded so we can autoload MiqDatabase and ApplicationRecord
+    initializer :init_secret_token, :after => :eager_load! do
+      Vmdb::Initializer.init_secret_token
+    end
+
     config.after_initialize do
       Vmdb::Initializer.init
       ActiveRecord::Base.connection_pool.release_connection

lib/vmdb/initializer.rb

@@ -12,11 +12,18 @@ def self.init
         MiqServer.my_server.starting_server_record
         MiqServer.my_server.update(:status => "started")
       end
+    end
+
+    def self.init_secret_token
+      return if Rails.application.config.secret_key_base
 
-      # Rails console needs session store configured
-      if defined?(Rails::Console)
-        MiqUiWorker.preload_for_console
+      token = if ActiveRecord::Base.connectable? && MiqDatabase.table_exists? && MiqDatabase.any?
+        MiqDatabase.first.session_secret_token
+      else
+        SecureRandom.hex(64)
       end
+
+      Rails.application.config.secret_key_base = token
     end
 
     private_class_method def self.log_db_connectable

spec/lib/vmdb/initializer_spec.rb

@@ -0,0 +1,41 @@
+RSpec.describe Vmdb::Initializer do
+  describe ".init_secret_token" do
+    before do
+      @token = Rails.application.secret_key_base
+    end
+
+    after do
+      Rails.application.config.secret_key_base = @token
+      Rails.application.secrets = nil
+    end
+
+    it "defaults to MiqDatabase session_secret_token" do
+      MiqDatabase.seed
+      Rails.application.config.secret_key_base = nil
+      Rails.application.secrets = nil
+
+      described_class.init_secret_token
+      expect(Rails.application.secret_key_base).to eq(MiqDatabase.first.session_secret_token)
+      expect(Rails.application.config.secret_key_base).to eq(MiqDatabase.first.session_secret_token)
+    end
+
+    it "uses random hex when MiqDatabase isn't seeded" do
+      Rails.application.config.secret_key_base = nil
+      Rails.application.secrets = nil
+
+      described_class.init_secret_token
+      expect(Rails.application.secret_key_base).to match(/^\h{128}$/)
+      expect(Rails.application.config.secret_key_base).to match(/^\h{128}$/)
+    end
+
+    it "does not reset secrets when token already configured" do
+      existing_value = SecureRandom.hex(64)
+      Rails.application.config.secret_key_base = existing_value
+      Rails.application.secrets = nil
+
+      described_class.init_secret_token
+      expect(Rails.application.secret_key_base).to eq(existing_value)
+      expect(Rails.application.config.secret_key_base).to eq(existing_value)
+    end
+  end
+end

spec/models/mixins/miq_web_server_worker_mixin_spec.rb

@@ -14,43 +14,6 @@
     end
   end
 
-  before do
-    @token = Rails.application.secret_key_base
-    MiqDatabase.seed
-  end
-
-  after do
-    Rails.application.config.secret_key_base = @token
-    Rails.application.secrets = nil if Rails.version < "7.1"
-  end
-
-  it ".configure_secret_token defaults to MiqDatabase session_secret_token" do
-    Rails.application.config.secret_key_base = nil
-
-    test_class.configure_secret_token
-    expect(Rails.application.secret_key_base).to eq(MiqDatabase.first.session_secret_token)
-    expect(Rails.application.config.secret_key_base).to eq(MiqDatabase.first.session_secret_token)
-  end
-
-  it ".configure_secret_token accepts an input token" do
-    Rails.application.config.secret_key_base = nil
-
-    token = SecureRandom.hex(64)
-    test_class.configure_secret_token(token)
-    expect(Rails.application.secret_key_base).to eq(token)
-    expect(Rails.application.config.secret_key_base).to eq(token)
-  end
-
-  it ".configure_secret_token does not reset secrets when token already configured" do
-    existing_value = SecureRandom.hex(64)
-    Rails.application.config.secret_key_base = existing_value
-    Rails.application.secrets = nil if Rails.version < "7.1"
-
-    test_class.configure_secret_token
-    expect(Rails.application.secret_key_base).to eq(existing_value)
-    expect(Rails.application.config.secret_key_base).to eq(existing_value)
-  end
-
   it "#rails_server_options" do
     w = FactoryBot.create(:miq_ui_worker, :uri => "http://127.0.0.1:3000")
     expect(w.rails_server_options).to include(