Add support of disabling per database connection (#204)

lib/database_consistency/helper.rb

@@ -13,6 +13,10 @@ def adapter
       end
     end
 
+    def database_name(model)
+      model.connection_db_config.name.to_s if model.respond_to?(:connection_db_config)
+    end
+
     def postgresql?
       adapter == 'postgresql'
     end

lib/database_consistency/processors/associations_processor.rb

@@ -13,9 +13,10 @@ class AssociationsProcessor < BaseProcessor
 
       private
 
-      def check
+      def check # rubocop:disable Metrics/AbcSize
         Helper.models.flat_map do |model|
-          next unless configuration.enabled?(model.name.to_s)
+          next unless configuration.enabled?('DatabaseConsistencyDatabases', Helper.database_name(model)) &&
+                      configuration.enabled?(model.name.to_s)
 
           Helper.first_level_associations(model).flat_map do |association|
             enabled_checkers.flat_map do |checker_class|

lib/database_consistency/processors/columns_processor.rb

@@ -14,9 +14,10 @@ class ColumnsProcessor < BaseProcessor
 
       private
 
-      def check
+      def check # rubocop:disable Metrics/AbcSize
         Helper.parent_models.flat_map do |model|
-          next unless configuration.enabled?(model.name.to_s)
+          next unless configuration.enabled?('DatabaseConsistencyDatabases', Helper.database_name(model)) &&
+                      configuration.enabled?(model.name.to_s)
 
           model.columns.flat_map do |column|
             enabled_checkers.flat_map do |checker_class|

lib/database_consistency/processors/enums_processor.rb

@@ -10,9 +10,10 @@ class EnumsProcessor < BaseProcessor
 
       private
 
-      def check
+      def check # rubocop:disable Metrics/AbcSize
         Helper.models.flat_map do |model|
-          next unless configuration.enabled?(model.name.to_s)
+          next unless configuration.enabled?('DatabaseConsistencyDatabases', Helper.database_name(model)) &&
+                      configuration.enabled?(model.name.to_s)
 
           model.defined_enums.keys.flat_map do |enum|
             enabled_checkers.flat_map do |checker_class|

lib/database_consistency/processors/indexes_processor.rb

@@ -14,7 +14,8 @@ class IndexesProcessor < BaseProcessor
 
       def check # rubocop:disable Metrics/AbcSize
         Helper.parent_models.flat_map do |model|
-          next unless configuration.enabled?(model.name.to_s)
+          next unless configuration.enabled?('DatabaseConsistencyDatabases', Helper.database_name(model)) &&
+                      configuration.enabled?(model.name.to_s)
 
           indexes = model.connection.indexes(model.table_name)
 

lib/database_consistency/processors/validators_fractions_processor.rb

@@ -11,9 +11,10 @@ class ValidatorsFractionsProcessor < BaseProcessor
       private
 
       # @return [Array<Hash>]
-      def check
+      def check # rubocop:disable Metrics/AbcSize
         Helper.parent_models.flat_map do |model|
-          next unless configuration.enabled?(model.name.to_s)
+          next unless configuration.enabled?('DatabaseConsistencyDatabases', Helper.database_name(model)) &&
+                      configuration.enabled?(model.name.to_s)
 
           model._validators.flat_map do |attribute, validators|
             next unless attribute

lib/database_consistency/processors/validators_processor.rb

@@ -12,9 +12,10 @@ class ValidatorsProcessor < BaseProcessor
       private
 
       # @return [Array<Hash>]
-      def check # rubocop:disable Metrics/AbcSize, Metrics/MethodLength
+      def check # rubocop:disable Metrics/AbcSize, Metrics/MethodLength, Metrics/CyclomaticComplexity
         Helper.parent_models.flat_map do |model|
-          next unless configuration.enabled?(model.name.to_s)
+          next unless configuration.enabled?('DatabaseConsistencyDatabases', Helper.database_name(model)) &&
+                      configuration.enabled?(model.name.to_s)
 
           model.validators.flat_map do |validator|
             next unless validator.respond_to?(:attributes)

rails7-example/.database_consistency.yml

@@ -2,6 +2,12 @@ DatabaseConsistencySettings:
   color: true
   log_level: DEBUG
 
+# Configures database connections.
+DatabaseConsistencyDatabases:
+  # Database connection name listed in database.yml.
+  secondary:
+    enabled: false # disables any check for +secondary+ database.
+
 # Everything is enabled by default.
 DatabaseConsistencyCheckers:
   All:

rails7-example/app/models/secondary/company.rb

@@ -0,0 +1,2 @@
+class Secondary::Company < SecondaryRecord
+end

rails7-example/app/models/secondary_record.rb

@@ -0,0 +1,8 @@
+class SecondaryRecord < ActiveRecord::Base
+  self.abstract_class = true
+
+  connects_to database: {
+    writing: :secondary,
+    reading: :secondary
+  }
+end

rails7-example/config/database.yml

@@ -10,8 +10,13 @@ default: &default
   timeout: 5000
 
 development:
-  <<: *default
-  database: db/development.sqlite3
+  primary:
+    <<: *default
+    database: db/development.sqlite3
+  secondary:
+    <<: *default
+    database: db/development_secondary.sqlite3
+    migrations_paths: db/migrate_secondary
 
 # Warning: The database defined as "test" will be erased and
 # re-generated from your development database when you run "rake".

rails7-example/db/migrate_secondary/20191012163944_create_companies.rb

@@ -0,0 +1,7 @@
+class CreateCompanies < ActiveRecord::Migration[6.0]
+  def change
+    create_table :companies do |t|
+      t.string :name, null: false
+    end
+  end
+end

rails7-example/db/secondary_schema.rb

@@ -0,0 +1,18 @@
+# This file is auto-generated from the current state of the database. Instead
+# of editing this file, please use the migrations feature of Active Record to
+# incrementally modify your database, and then regenerate this schema definition.
+#
+# This file is the source Rails uses to define your schema when running `bin/rails
+# db:schema:load`. When creating a new database, `bin/rails db:schema:load` tends to
+# be faster and is potentially less error prone than running all of your
+# migrations from scratch. Old migrations may fail to apply correctly if those
+# migrations use external dependencies or application code.
+#
+# It's strongly recommended that you check this file into your version control system.
+
+ActiveRecord::Schema[7.0].define(version: 2019_10_12_163944) do
+  create_table "companies", force: :cascade do |t|
+    t.string "name", null: false
+  end
+
+end