diff options
Diffstat (limited to 'activerecord/lib/active_record/database_configurations')
3 files changed, 166 insertions, 0 deletions
diff --git a/activerecord/lib/active_record/database_configurations/database_config.rb b/activerecord/lib/active_record/database_configurations/database_config.rb new file mode 100644 index 0000000000..adc37cc439 --- /dev/null +++ b/activerecord/lib/active_record/database_configurations/database_config.rb @@ -0,0 +1,37 @@ +# frozen_string_literal: true + +module ActiveRecord + class DatabaseConfigurations + # ActiveRecord::Base.configurations will return either a HashConfig or + # UrlConfig respectively. It will never return a DatabaseConfig object, + # as this is the parent class for the types of database configuration objects. + class DatabaseConfig # :nodoc: + attr_reader :env_name, :spec_name + + def initialize(env_name, spec_name) + @env_name = env_name + @spec_name = spec_name + end + + def replica? + raise NotImplementedError + end + + def migrations_paths + raise NotImplementedError + end + + def url_config? + false + end + + def to_legacy_hash + { env_name => config } + end + + def for_current_env? + env_name == ActiveRecord::ConnectionHandling::DEFAULT_ENV.call + end + end + end +end diff --git a/activerecord/lib/active_record/database_configurations/hash_config.rb b/activerecord/lib/active_record/database_configurations/hash_config.rb new file mode 100644 index 0000000000..e31ff09391 --- /dev/null +++ b/activerecord/lib/active_record/database_configurations/hash_config.rb @@ -0,0 +1,50 @@ +# frozen_string_literal: true + +module ActiveRecord + class DatabaseConfigurations + # A HashConfig object is created for each database configuration entry that + # is created from a hash. + # + # A hash config: + # + # { "development" => { "database" => "db_name" } } + # + # Becomes: + # + # #<ActiveRecord::DatabaseConfigurations::HashConfig:0x00007fd1acbded10 + # @env_name="development", @spec_name="primary", @config={"database"=>"db_name"}> + # + # ==== Options + # + # * <tt>:env_name</tt> - The Rails environment, i.e. "development". + # * <tt>:spec_name</tt> - The specification name. In a standard two-tier + # database configuration this will default to "primary". In a multiple + # database three-tier database configuration this corresponds to the name + # used in the second tier, for example "primary_readonly". + # * <tt>:config</tt> - The config hash. This is the hash that contains the + # database adapter, name, and other important information for database + # connections. + class HashConfig < DatabaseConfig + attr_reader :config + + def initialize(env_name, spec_name, config) + super(env_name, spec_name) + @config = config + end + + # Determines whether a database configuration is for a replica / readonly + # connection. If the +replica+ key is present in the config, +replica?+ will + # return +true+. + def replica? + config["replica"] + end + + # The migrations paths for a database configuration. If the + # +migrations_paths+ key is present in the config, +migrations_paths+ + # will return its value. + def migrations_paths + config["migrations_paths"] + end + end + end +end diff --git a/activerecord/lib/active_record/database_configurations/url_config.rb b/activerecord/lib/active_record/database_configurations/url_config.rb new file mode 100644 index 0000000000..e2d30ae416 --- /dev/null +++ b/activerecord/lib/active_record/database_configurations/url_config.rb @@ -0,0 +1,79 @@ +# frozen_string_literal: true + +module ActiveRecord + class DatabaseConfigurations + # A UrlConfig object is created for each database configuration + # entry that is created from a URL. This can either be a URL string + # or a hash with a URL in place of the config hash. + # + # A URL config: + # + # postgres://localhost/foo + # + # Becomes: + # + # #<ActiveRecord::DatabaseConfigurations::UrlConfig:0x00007fdc3238f340 + # @env_name="default_env", @spec_name="primary", + # @config={"adapter"=>"postgresql", "database"=>"foo", "host"=>"localhost"}, + # @url="postgres://localhost/foo"> + # + # ==== Options + # + # * <tt>:env_name</tt> - The Rails environment, ie "development". + # * <tt>:spec_name</tt> - The specification name. In a standard two-tier + # database configuration this will default to "primary". In a multiple + # database three-tier database configuration this corresponds to the name + # used in the second tier, for example "primary_readonly". + # * <tt>:url</tt> - The database URL. + # * <tt>:config</tt> - The config hash. This is the hash that contains the + # database adapter, name, and other important information for database + # connections. + class UrlConfig < DatabaseConfig + attr_reader :url, :config + + def initialize(env_name, spec_name, url, config = {}) + super(env_name, spec_name) + @config = build_config(config, url) + @url = url + end + + def url_config? # :nodoc: + true + end + + # Determines whether a database configuration is for a replica / readonly + # connection. If the +replica+ key is present in the config, +replica?+ will + # return +true+. + def replica? + config["replica"] + end + + # The migrations paths for a database configuration. If the + # +migrations_paths+ key is present in the config, +migrations_paths+ + # will return its value. + def migrations_paths + config["migrations_paths"] + end + + private + + def build_url_hash(url) + if url.nil? || /^jdbc:/.match?(url) + { "url" => url } + else + ActiveRecord::ConnectionAdapters::ConnectionSpecification::ConnectionUrlResolver.new(url).to_hash + end + end + + def build_config(original_config, url) + hash = build_url_hash(url) + + if original_config[env_name] + original_config[env_name].merge(hash) + else + original_config.merge(hash) + end + end + end + end +end |