Class: Monark::Context

Inherits:
Object
  • Object
show all
Defined in:
lib/monark/context.rb

Overview

Monark runtime. Encapsulates state and manages migrations.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(root, migrations_file_name = Monark::DEFAULT_MIGRATIONS_FILE_NAME) ⇒ Context

Returns a new instance of Context.



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# File 'lib/monark/context.rb', line 10

def initialize(root, migrations_file_name = Monark::DEFAULT_MIGRATIONS_FILE_NAME)
  self.root                 = Pathname.new(root)
  self.migrations_file_name = migrations_file_name
  @migrations               = []
end

Instance Attribute Details

#connection ⇒ Object

Returns the value of attribute connection.



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# File 'lib/monark/context.rb', line 5

def connection
  @connection
end

#env ⇒ Object 



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# File 'lib/monark/context.rb', line 16

def env
  defined?(@env) ? @env : Monark.env
end

#manifest ⇒ Object 



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# File 'lib/monark/context.rb', line 20

def manifest
  @manifest ||= root.join(migrations_file_name).read
end

#migrations ⇒ Object (readonly)

Returns the value of attribute migrations.



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# File 'lib/monark/context.rb', line 6

def migrations
  @migrations
end

#migrations_file_name ⇒ Object

Returns the value of attribute migrations_file_name.



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# File 'lib/monark/context.rb', line 5

def migrations_file_name
  @migrations_file_name
end

#root ⇒ Object

Returns the value of attribute root.



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# File 'lib/monark/context.rb', line 5

def root
  @root
end

#version ⇒ Object

Returns the value of attribute version.



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# File 'lib/monark/context.rb', line 6

def version
  @version
end

Instance Method Details

#assume_done ⇒ Object 



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# File 'lib/monark/context.rb', line 46

def assume_done
  load_manifest
  schema = Schema.new
  schema.next_migration = migrations.count
end

#done ⇒ Object 



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# File 'lib/monark/context.rb', line 39

def done
  load_manifest
  count = migrations.count
  schema = Schema.new
  schema.next_migration = count if count > schema.next_migration
end

#load_manifest ⇒ Object 



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# File 'lib/monark/context.rb', line 28

def load_manifest
  @loaded_manifest ||= begin
    DSL.new(self).instance_eval(manifest, root.join(migrations_file_name).to_s, 0)
    true
  end
end

#migrate(options = {}) ⇒ Object 



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# File 'lib/monark/context.rb', line 52

def migrate(options = {})
  load_manifest
  schema = Schema.new
  ActiveRecord::Base.transaction do
    migrations.each_with_index do |migration, index|
      if (index >= schema.next_migration) || (migration.reloadable? && options[:reload])
        migration.perform
      end
    end
    done
  end
end

#push(*args) ⇒ Object 



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# File 'lib/monark/context.rb', line 35

def push(*args)
  migrations.push(*args)
end