aboutsummaryrefslogtreecommitdiffstats
path: root/railties/lib/tasks/databases.rake
blob: 5cb27f1f10364bb6d8436d43a77eb3ee42c9c9f8 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
namespace :db do
  namespace :create do
    desc 'Create all the local databases defined in config/database.yml'
    task :all => :environment do
      ActiveRecord::Base.configurations.each_value do |config|
        # Skip entries that don't have a database key, such as the first entry here:
        #
        #  defaults: &defaults
        #    adapter: mysql
        #    username: root
        #    password:
        #    host: localhost
        #
        #  development:
        #    database: blog_development
        #    <<: *defaults
        next unless config['database']
        # Only connect to local databases
        local_database?(config) { create_database(config) }
      end
    end
  end

  desc 'Create the database defined in config/database.yml for the current RAILS_ENV'
  task :create => :environment do
    create_database(ActiveRecord::Base.configurations[RAILS_ENV])
  end

  def create_database(config)
    begin
      if config['adapter'] =~ /sqlite/
        if File.exist?(config['database'])
          $stderr.puts "#{config['database']} already exists"
        else
          begin
            # Create the SQLite database
            ActiveRecord::Base.establish_connection(config)
            ActiveRecord::Base.connection
          rescue
            $stderr.puts $!, *($!.backtrace)
            $stderr.puts "Couldn't create database for #{config.inspect}"
          end
        end
        return # Skip the else clause of begin/rescue    
      else
        ActiveRecord::Base.establish_connection(config)
        ActiveRecord::Base.connection
      end
    rescue
      case config['adapter']
      when 'mysql'
        @charset   = ENV['CHARSET']   || 'utf8'
        @collation = ENV['COLLATION'] || 'utf8_general_ci'
        begin
          ActiveRecord::Base.establish_connection(config.merge('database' => nil))
          ActiveRecord::Base.connection.create_database(config['database'], :charset => (config['charset'] || @charset), :collation => (config['collation'] || @collation))
          ActiveRecord::Base.establish_connection(config)
        rescue
          $stderr.puts "Couldn't create database for #{config.inspect}, charset: #{config['charset'] || @charset}, collation: #{config['collation'] || @collation} (if you set the charset manually, make sure you have a matching collation)"
        end
      when 'postgresql'
        @encoding = config[:encoding] || ENV['CHARSET'] || 'utf8'
        begin
          ActiveRecord::Base.establish_connection(config.merge('database' => 'postgres', 'schema_search_path' => 'public'))
          ActiveRecord::Base.connection.create_database(config['database'], config.merge('encoding' => @encoding))
          ActiveRecord::Base.establish_connection(config)
        rescue
          $stderr.puts $!, *($!.backtrace)
          $stderr.puts "Couldn't create database for #{config.inspect}"
        end
      end
    else
      $stderr.puts "#{config['database']} already exists"
    end
  end

  namespace :drop do
    desc 'Drops all the local databases defined in config/database.yml'
    task :all => :environment do
      ActiveRecord::Base.configurations.each_value do |config|
        # Skip entries that don't have a database key
        next unless config['database']
        # Only connect to local databases
        local_database?(config) { drop_database(config) }
      end
    end
  end

  desc 'Drops the database for the current RAILS_ENV'
  task :drop => :environment do
    config = ActiveRecord::Base.configurations[RAILS_ENV || 'development']
    begin
      drop_database(config)
    rescue Exception => e
      puts "Couldn't drop #{config['database']} : #{e.inspect}"
    end
  end

  def local_database?(config, &block)
    if %w( 127.0.0.1 localhost ).include?(config['host']) || config['host'].blank?
      yield
    else
      puts "This task only modifies local databases. #{config['database']} is on a remote host."
    end
  end


  desc "Migrate the database through scripts in db/migrate. Target specific version with VERSION=x. Turn off output with VERBOSE=false."
  task :migrate => :environment do
    ActiveRecord::Migration.verbose = ENV["VERBOSE"] ? ENV["VERBOSE"] == "true" : true
    ActiveRecord::Migrator.migrate("db/migrate/", ENV["VERSION"] ? ENV["VERSION"].to_i : nil)
    Rake::Task["db:schema:dump"].invoke if ActiveRecord::Base.schema_format == :ruby
  end

  namespace :migrate do
    desc  'Rollbacks the database one migration and re migrate up. If you want to rollback more than one step, define STEP=x. Target specific version with VERSION=x.'
    task :redo => :environment do
      if ENV["VERSION"]
        Rake::Task["db:migrate:down"].invoke
        Rake::Task["db:migrate:up"].invoke
      else
        Rake::Task["db:rollback"].invoke
        Rake::Task["db:migrate"].invoke
      end
    end

    desc 'Resets your database using your migrations for the current environment'
    task :reset => ["db:drop", "db:create", "db:migrate"]

    desc 'Runs the "up" for a given migration VERSION.'
    task :up => :environment do
      version = ENV["VERSION"] ? ENV["VERSION"].to_i : nil
      raise "VERSION is required" unless version
      ActiveRecord::Migrator.run(:up, "db/migrate/", version)
      Rake::Task["db:schema:dump"].invoke if ActiveRecord::Base.schema_format == :ruby
    end

    desc 'Runs the "down" for a given migration VERSION.'
    task :down => :environment do
      version = ENV["VERSION"] ? ENV["VERSION"].to_i : nil
      raise "VERSION is required" unless version
      ActiveRecord::Migrator.run(:down, "db/migrate/", version)
      Rake::Task["db:schema:dump"].invoke if ActiveRecord::Base.schema_format == :ruby
    end
  end

  desc 'Rolls the schema back to the previous version. Specify the number of steps with STEP=n'
  task :rollback => :environment do
    step = ENV['STEP'] ? ENV['STEP'].to_i : 1
    ActiveRecord::Migrator.rollback('db/migrate/', step)
    Rake::Task["db:schema:dump"].invoke if ActiveRecord::Base.schema_format == :ruby
  end

  desc 'Drops and recreates the database from db/schema.rb for the current environment.'
  task :reset => ['db:drop', 'db:create', 'db:schema:load']

  desc "Retrieves the charset for the current environment's database"
  task :charset => :environment do
    config = ActiveRecord::Base.configurations[RAILS_ENV || 'development']
    case config['adapter']
    when 'mysql'
      ActiveRecord::Base.establish_connection(config)
      puts ActiveRecord::Base.connection.charset
    when 'postgresql'
      ActiveRecord::Base.establish_connection(config)
      puts ActiveRecord::Base.connection.encoding
    else
      puts 'sorry, your database adapter is not supported yet, feel free to submit a patch'
    end
  end

  desc "Retrieves the collation for the current environment's database"
  task :collation => :environment do
    config = ActiveRecord::Base.configurations[RAILS_ENV || 'development']
    case config['adapter']
    when 'mysql'
      ActiveRecord::Base.establish_connection(config)
      puts ActiveRecord::Base.connection.collation
    else
      puts 'sorry, your database adapter is not supported yet, feel free to submit a patch'
    end
  end

  desc "Retrieves the current schema version number"
  task :version => :environment do
    puts "Current version: #{ActiveRecord::Migrator.current_version}"
  end

  desc "Raises an error if there are pending migrations"
  task :abort_if_pending_migrations => :environment do
    if defined? ActiveRecord
      pending_migrations = ActiveRecord::Migrator.new(:up, 'db/migrate').pending_migrations

      if pending_migrations.any?
        puts "You have #{pending_migrations.size} pending migrations:"
        pending_migrations.each do |pending_migration|
          puts '  %4d %s' % [pending_migration.version, pending_migration.name]
        end
        abort %{Run "rake db:migrate" to update your database then try again.}
      end
    end
  end

  namespace :fixtures do
    desc "Load fixtures into the current environment's database.  Load specific fixtures using FIXTURES=x,y. Load from subdirectory in test/fixtures using FIXTURES_DIR=z. Specify an alternative path (eg. spec/fixtures) using FIXTURES_PATH=spec/fixtures."
    task :load => :environment do
      require 'active_record/fixtures'
      ActiveRecord::Base.establish_connection(Rails.env)
      base_dir = ENV['FIXTURES_PATH'] ? File.join(Rails.root, ENV['FIXTURES_PATH']) : File.join(Rails.root, 'test', 'fixtures')
      fixtures_dir = ENV['FIXTURES_DIR'] ? File.join(base_dir, ENV['FIXTURES_DIR']) : base_dir

      (ENV['FIXTURES'] ? ENV['FIXTURES'].split(/,/).map {|f| File.join(fixtures_dir, f) } : Dir.glob(File.join(fixtures_dir, '*.{yml,csv}'))).each do |fixture_file|
        Fixtures.create_fixtures(File.dirname(fixture_file), File.basename(fixture_file, '.*'))
      end
    end

    desc "Search for a fixture given a LABEL or ID. Specify an alternative path (eg. spec/fixtures) using FIXTURES_PATH=spec/fixtures."
    task :identify => :environment do
      require "active_record/fixtures"

      label, id = ENV["LABEL"], ENV["ID"]
      raise "LABEL or ID required" if label.blank? && id.blank?

      puts %Q(The fixture ID for "#{label}" is #{Fixtures.identify(label)}.) if label

      base_dir = ENV['FIXTURES_PATH'] ? File.join(Rails.root, ENV['FIXTURES_PATH']) : File.join(Rails.root, 'test', 'fixtures')
      Dir["#{base_dir}/**/*.yml"].each do |file|
        if data = YAML::load(ERB.new(IO.read(file)).result)
          data.keys.each do |key|
            key_id = Fixtures.identify(key)

            if key == label || key_id == id.to_i
              puts "#{file}: #{key} (#{key_id})"
            end
          end
        end
      end
    end
  end

  namespace :schema do
    desc "Create a db/schema.rb file that can be portably used against any DB supported by AR"
    task :dump => :environment do
      require 'active_record/schema_dumper'
      File.open(ENV['SCHEMA'] || "#{RAILS_ROOT}/db/schema.rb", "w") do |file|
        ActiveRecord::SchemaDumper.dump(ActiveRecord::Base.connection, file)
      end
    end

    desc "Load a schema.rb file into the database"
    task :load => :environment do
      file = ENV['SCHEMA'] || "#{RAILS_ROOT}/db/schema.rb"
      load(file)
    end
  end

  namespace :structure do
    desc "Dump the database structure to a SQL file"
    task :dump => :environment do
      abcs = ActiveRecord::Base.configurations
      case abcs[RAILS_ENV]["adapter"]
      when "mysql", "oci", "oracle"
        ActiveRecord::Base.establish_connection(abcs[RAILS_ENV])
        File.open("#{RAILS_ROOT}/db/#{RAILS_ENV}_structure.sql", "w+") { |f| f << ActiveRecord::Base.connection.structure_dump }
      when "postgresql"
        ENV['PGHOST']     = abcs[RAILS_ENV]["host"] if abcs[RAILS_ENV]["host"]
        ENV['PGPORT']     = abcs[RAILS_ENV]["port"].to_s if abcs[RAILS_ENV]["port"]
        ENV['PGPASSWORD'] = abcs[RAILS_ENV]["password"].to_s if abcs[RAILS_ENV]["password"]
        search_path = abcs[RAILS_ENV]["schema_search_path"]
        search_path = "--schema=#{search_path}" if search_path
        `pg_dump -i -U "#{abcs[RAILS_ENV]["username"]}" -s -x -O -f db/#{RAILS_ENV}_structure.sql #{search_path} #{abcs[RAILS_ENV]["database"]}`
        raise "Error dumping database" if $?.exitstatus == 1
      when "sqlite", "sqlite3"
        dbfile = abcs[RAILS_ENV]["database"] || abcs[RAILS_ENV]["dbfile"]
        `#{abcs[RAILS_ENV]["adapter"]} #{dbfile} .schema > db/#{RAILS_ENV}_structure.sql`
      when "sqlserver"
        `scptxfr /s #{abcs[RAILS_ENV]["host"]} /d #{abcs[RAILS_ENV]["database"]} /I /f db\\#{RAILS_ENV}_structure.sql /q /A /r`
        `scptxfr /s #{abcs[RAILS_ENV]["host"]} /d #{abcs[RAILS_ENV]["database"]} /I /F db\ /q /A /r`
      when "firebird"
        set_firebird_env(abcs[RAILS_ENV])
        db_string = firebird_db_string(abcs[RAILS_ENV])
        sh "isql -a #{db_string} > #{RAILS_ROOT}/db/#{RAILS_ENV}_structure.sql"
      else
        raise "Task not supported by '#{abcs["test"]["adapter"]}'"
      end

      if ActiveRecord::Base.connection.supports_migrations?
        File.open("#{RAILS_ROOT}/db/#{RAILS_ENV}_structure.sql", "a") { |f| f << ActiveRecord::Base.connection.dump_schema_information }
      end
    end
  end

  namespace :test do
    desc "Recreate the test database from the current schema.rb"
    task :load => 'db:test:purge' do
      ActiveRecord::Base.establish_connection(ActiveRecord::Base.configurations['test'])
      ActiveRecord::Schema.verbose = false
      Rake::Task["db:schema:load"].invoke
    end

    desc "Recreate the test database from the current environment's database schema"
    task :clone => %w(db:schema:dump db:test:load)

    desc "Recreate the test databases from the development structure"
    task :clone_structure => [ "db:structure:dump", "db:test:purge" ] do
      abcs = ActiveRecord::Base.configurations
      case abcs["test"]["adapter"]
      when "mysql"
        ActiveRecord::Base.establish_connection(:test)
        ActiveRecord::Base.connection.execute('SET foreign_key_checks = 0')
        IO.readlines("#{RAILS_ROOT}/db/#{RAILS_ENV}_structure.sql").join.split("\n\n").each do |table|
          ActiveRecord::Base.connection.execute(table)
        end
      when "postgresql"
        ENV['PGHOST']     = abcs["test"]["host"] if abcs["test"]["host"]
        ENV['PGPORT']     = abcs["test"]["port"].to_s if abcs["test"]["port"]
        ENV['PGPASSWORD'] = abcs["test"]["password"].to_s if abcs["test"]["password"]
        `psql -U "#{abcs["test"]["username"]}" -f #{RAILS_ROOT}/db/#{RAILS_ENV}_structure.sql #{abcs["test"]["database"]}`
      when "sqlite", "sqlite3"
        dbfile = abcs["test"]["database"] || abcs["test"]["dbfile"]
        `#{abcs["test"]["adapter"]} #{dbfile} < #{RAILS_ROOT}/db/#{RAILS_ENV}_structure.sql`
      when "sqlserver"
        `osql -E -S #{abcs["test"]["host"]} -d #{abcs["test"]["database"]} -i db\\#{RAILS_ENV}_structure.sql`
      when "oci", "oracle"
        ActiveRecord::Base.establish_connection(:test)
        IO.readlines("#{RAILS_ROOT}/db/#{RAILS_ENV}_structure.sql").join.split(";\n\n").each do |ddl|
          ActiveRecord::Base.connection.execute(ddl)
        end
      when "firebird"
        set_firebird_env(abcs["test"])
        db_string = firebird_db_string(abcs["test"])
        sh "isql -i #{RAILS_ROOT}/db/#{RAILS_ENV}_structure.sql #{db_string}"
      else
        raise "Task not supported by '#{abcs["test"]["adapter"]}'"
      end
    end

    desc "Empty the test database"
    task :purge => :environment do
      abcs = ActiveRecord::Base.configurations
      case abcs["test"]["adapter"]
      when "mysql"
        ActiveRecord::Base.establish_connection(:test)
        ActiveRecord::Base.connection.recreate_database(abcs["test"]["database"], abcs["test"])
      when "postgresql"
        ActiveRecord::Base.clear_active_connections!
        drop_database(abcs['test'])
        create_database(abcs['test'])
      when "sqlite","sqlite3"
        dbfile = abcs["test"]["database"] || abcs["test"]["dbfile"]
        File.delete(dbfile) if File.exist?(dbfile)
      when "sqlserver"
        dropfkscript = "#{abcs["test"]["host"]}.#{abcs["test"]["database"]}.DP1".gsub(/\\/,'-')
        `osql -E -S #{abcs["test"]["host"]} -d #{abcs["test"]["database"]} -i db\\#{dropfkscript}`
        `osql -E -S #{abcs["test"]["host"]} -d #{abcs["test"]["database"]} -i db\\#{RAILS_ENV}_structure.sql`
      when "oci", "oracle"
        ActiveRecord::Base.establish_connection(:test)
        ActiveRecord::Base.connection.structure_drop.split(";\n\n").each do |ddl|
          ActiveRecord::Base.connection.execute(ddl)
        end
      when "firebird"
        ActiveRecord::Base.establish_connection(:test)
        ActiveRecord::Base.connection.recreate_database!
      else
        raise "Task not supported by '#{abcs["test"]["adapter"]}'"
      end
    end

    desc 'Check for pending migrations and load the test schema'
    task :prepare => 'db:abort_if_pending_migrations' do
      if defined?(ActiveRecord) && !ActiveRecord::Base.configurations.blank?
        Rake::Task[{ :sql  => "db:test:clone_structure", :ruby => "db:test:load" }[ActiveRecord::Base.schema_format]].invoke
      end
    end
  end

  namespace :sessions do
    desc "Creates a sessions migration for use with CGI::Session::ActiveRecordStore"
    task :create => :environment do
      raise "Task unavailable to this database (no migration support)" unless ActiveRecord::Base.connection.supports_migrations?
      require 'rails_generator'
      require 'rails_generator/scripts/generate'
      Rails::Generator::Scripts::Generate.new.run(["session_migration", ENV["MIGRATION"] || "CreateSessions"])
    end

    desc "Clear the sessions table"
    task :clear => :environment do
      ActiveRecord::Base.connection.execute "DELETE FROM #{session_table_name}"
    end
  end
end

def drop_database(config)
  case config['adapter']
  when 'mysql'
    ActiveRecord::Base.connection.drop_database config['database']
  when /^sqlite/
    FileUtils.rm(File.join(RAILS_ROOT, config['database']))
  when 'postgresql'
    ActiveRecord::Base.establish_connection(config.merge('database' => 'postgres', 'schema_search_path' => 'public'))
    ActiveRecord::Base.connection.drop_database config['database']
  end
end

def session_table_name
  ActiveRecord::Base.pluralize_table_names ? :sessions : :session
end

def set_firebird_env(config)
  ENV["ISC_USER"]     = config["username"].to_s if config["username"]
  ENV["ISC_PASSWORD"] = config["password"].to_s if config["password"]
end

def firebird_db_string(config)
  FireRuby::Database.db_string_for(config.symbolize_keys)
end