Class: DatastaxRails::Schema::Migrator

Inherits:
Object
  • Object
show all
Includes:
Cassandra, Solr
Defined in:
lib/datastax_rails/schema/migrator.rb

Overview

DatastaxRails reads the attributes from the individual models. This class migrates both Cassandra and Solr to the point where they reflect what is specified in the models.

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Cassandra

#cassandra_index_cql_name, #check_missing_schema, #column_exists?, #column_family_exists?, #create_cql3_column_family, #create_keyspace, #drop_keyspace, #index_exists?, #keyspace_exists?, #solr_index_cql_name

Methods included from Solr

#create_solr_core, #generate_solr_schema, #reindex_solr, #upload_solr_configuration

Constructor Details

#initialize(keyspace) ⇒ Migrator

Returns a new instance of Migrator.



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# File 'lib/datastax_rails/schema/migrator.rb', line 13

def initialize(keyspace)
  @keyspace = keyspace
  check_schema_migrations unless keyspace == 'system'
  @errors = []
end

Instance Attribute Details

#errors ⇒ Object

Returns the value of attribute errors.



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# File 'lib/datastax_rails/schema/migrator.rb', line 11

def errors
  @errors
end

Instance Method Details

#connection ⇒ Object 



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# File 'lib/datastax_rails/schema/migrator.rb', line 51

def connection
  DatastaxRails::Base.connection
end

#migrate_all(force = false) ⇒ Object 



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# File 'lib/datastax_rails/schema/migrator.rb', line 19

def migrate_all(force = false)
  say_with_time('Migrating all models') do

    FileList[rails_models].each do |model|
      require model
    end

    count = 0
    DatastaxRails::Base.models.each do |m|
      count += migrate_one(m, force) unless m.abstract_class?
    end
    count
  end
end

#migrate_one(model, force = false) ⇒ Object 



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# File 'lib/datastax_rails/schema/migrator.rb', line 34

def migrate_one(model, force = false)
  count = 0
  say_with_time("Migrating #{model.name} to latest version") do
    unless column_family_exists?(model.column_family.to_s)
      create_cql3_column_family(model)
      count += 1
    end

    count += check_missing_schema(model)

    unless model <= DatastaxRails::CassandraOnlyModel
      count += upload_solr_configuration(model, force)
    end
  end
  count
end