Module: Dbviewer

Defined in:
lib/dbviewer.rb,
lib/dbviewer/engine.rb,
lib/dbviewer/version.rb,
lib/dbviewer/query/logger.rb,
lib/dbviewer/query/parser.rb,
lib/dbviewer/storage/base.rb,
lib/dbviewer/configuration.rb,
lib/dbviewer/sql_validator.rb,
lib/dbviewer/query/analyzer.rb,
lib/dbviewer/query/executor.rb,
lib/dbviewer/database/manager.rb,
lib/dbviewer/query/collection.rb,
app/jobs/dbviewer/application_job.rb,
lib/dbviewer/storage/file_storage.rb,
lib/dbviewer/database/cache_manager.rb,
lib/dbviewer/datatable/query_params.rb,
app/models/dbviewer/application_record.rb,
lib/dbviewer/database/metadata_manager.rb,
lib/dbviewer/storage/in_memory_storage.rb,
app/helpers/dbviewer/application_helper.rb,
app/mailers/dbviewer/application_mailer.rb,
lib/dbviewer/datatable/query_operations.rb,
app/controllers/dbviewer/home_controller.rb,
app/controllers/dbviewer/logs_controller.rb,
lib/generators/dbviewer/install_generator.rb,
app/controllers/dbviewer/tables_controller.rb,
lib/dbviewer/database/dynamic_model_factory.rb,
app/controllers/dbviewer/api/base_controller.rb,
app/controllers/dbviewer/api/tables_controller.rb,
app/controllers/dbviewer/api/queries_controller.rb,
app/controllers/dbviewer/application_controller.rb,
app/controllers/dbviewer/connections_controller.rb,
app/controllers/concerns/dbviewer/error_handling.rb,
app/controllers/dbviewer/api/database_controller.rb,
app/controllers/concerns/dbviewer/pagination_concern.rb,
app/controllers/concerns/dbviewer/database_operations.rb,
app/controllers/dbviewer/entity_relationship_diagrams_controller.rb,
app/controllers/dbviewer/api/entity_relationship_diagrams_controller.rb

Defined Under Namespace

Modules: Api, ApplicationHelper, Database, DatabaseOperations, Datatable, ErrorHandling, Generators, PaginationConcern, Query, Storage Classes: ApplicationController, ApplicationJob, ApplicationMailer, ApplicationRecord, Configuration, ConnectionsController, Engine, EntityRelationshipDiagramsController, HomeController, LogsController, SqlValidator, TablesController

Constant Summary collapse

VERSION = 
"0.6.1"

Class Attribute Summary collapse

Class Method Summary collapse

Class Attribute Details

.configuration ⇒ Object

Get configuration settings



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# File 'lib/dbviewer.rb', line 32

def configuration
  @configuration ||= Configuration.new
end

Class Method Details

.configure {|configuration| ... } ⇒ Object

Configure the engine with a block

Examples:

Dbviewer.configure do |config|
  config.per_page_options = [10, 25, 50]
  config.default_per_page = 25
end

Yields:



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# File 'lib/dbviewer.rb', line 43

def configure
  yield(configuration) if block_given?
end

.init ⇒ Object

Initialize engine with default values or user-provided configuration



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# File 'lib/dbviewer.rb', line 100

def init
  # Define class methods to access configuration
  Dbviewer::SqlValidator.singleton_class.class_eval do
    define_method(:configuration) { Dbviewer.configuration }
    define_method(:max_query_length) { Dbviewer.configuration.max_query_length }
  end

  # Log initialization
  Rails.logger.info("[DBViewer] Initialized with configuration: #{configuration.inspect}")
end

.reset_configuration ⇒ Object

Reset configuration to defaults



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# File 'lib/dbviewer.rb', line 48

def reset_configuration
  @configuration = Configuration.new
end

.setup ⇒ Object

This class method will be called by the engine when it’s appropriate



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# File 'lib/dbviewer.rb', line 53

def setup
  # Configure the query logger with current configuration settings
  Dbviewer::Query::Logger.configure(
    enable_query_logging: configuration.enable_query_logging,
    query_logging_mode: configuration.query_logging_mode
  )

  # Check all configured connections
  connection_errors = []
  configuration.database_connections.each do |key, config|
    begin
      connection_class = nil

      if config[:connection]
        connection_class = config[:connection]
      elsif config[:connection_class].is_a?(String)
        # Try to load the class if it's defined as a string
        begin
          connection_class = config[:connection_class].constantize
        rescue NameError => e
          Rails.logger.warn "DBViewer could not load connection class #{config[:connection_class]}: #{e.message}"
          next
        end
      end

      if connection_class
        connection = connection_class.connection
        adapter_name = connection.adapter_name
        Rails.logger.info "DBViewer successfully connected to #{config[:name] || key.to_s} database (#{adapter_name})"

        # Store the resolved connection class back in the config
        config[:connection] = connection_class
      else
        raise "No valid connection configuration found for #{key}"
      end
    rescue => e
      connection_errors << { key: key, error: e.message }
      Rails.logger.error "DBViewer could not connect to #{config[:name] || key.to_s} database: #{e.message}"
    end
  end

  if connection_errors.length == configuration.database_connections.length
    raise "DBViewer could not connect to any configured database"
  end
end