Class: CoverRage::Stores::Sqlite

Inherits:
Object
  • Object
show all
Defined in:
lib/cover_rage/stores/sqlite.rb

Instance Method Summary collapse

Constructor Details

#initialize(path) ⇒ Sqlite

Returns a new instance of Sqlite.



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# File 'lib/cover_rage/stores/sqlite.rb', line 10

def initialize(path)
  @mutex = Mutex.new
  @path = path
  @db = SQLite3::Database.new(path)
  @db.busy_handler { true }
  @db.execute <<-SQL
    create table if not exists records (
      path text primary key not null,
      revision blob not null,
      source text not null,
      execution_count text not null,
      last_executed_at text not null
    )
  SQL
  process_ext = Module.new
  process_ext.module_exec(self) do |store|
    define_method :_fork do
      store.instance_variable_get(:@db).close
      pid = super()
      store.instance_variable_set(:@db, SQLite3::Database.new(path))
      store.instance_variable_get(:@db).busy_handler { true }
      pid
    end
  end
  Process.singleton_class.prepend(process_ext)
end

Instance Method Details

#clear ⇒ Object 



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# File 'lib/cover_rage/stores/sqlite.rb', line 74

def clear
  @db.execute('delete from records')
end

#list ⇒ Object 



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# File 'lib/cover_rage/stores/sqlite.rb', line 60

def list
  @db
    .execute('select path, revision, source, execution_count, last_executed_at from records')
    .map do |(path, revision, source, execution_count, last_executed_at)|
      Record.new(
        path:,
        revision:,
        source:,
        execution_count: JSON.parse(execution_count),
        last_executed_at: JSON.parse(last_executed_at)
      )
    end
end

#transaction ⇒ Object 



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# File 'lib/cover_rage/stores/sqlite.rb', line 37

def transaction(&)
  @mutex.synchronize do
    @db.transaction(:exclusive, &)
  end
end

#update(records) ⇒ Object 



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# File 'lib/cover_rage/stores/sqlite.rb', line 43

def update(records)
  @db.execute(
    "insert or replace into records (path, revision, source, execution_count, last_executed_at) values #{
      (['(?,?,?,?,?)'] * records.length).join(',')
    }",
    records.each_with_object([]) do |record, memo|
      memo.push(
        record.path,
        record.revision,
        record.source,
        JSON.dump(record.execution_count),
        JSON.dump(record.last_executed_at)
      )
    end
  )
end