Class: Embulk::Output::Redis

Inherits:
OutputPlugin
  • Object
show all
Defined in:
lib/embulk/output/rediskeys.rb

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.transaction(config, schema, count, &control) ⇒ Object 



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# File 'lib/embulk/output/rediskeys.rb', line 11

def self.transaction(config, schema, count, &control)
  # configuration code:
  task = {
    'host' => config.param('host', :string, :default => 'localhost'),
    'port' => config.param('port', :integer, :default => 6379),
    'db' => config.param('db', :integer, :default => 0),
    'key_prefix' => config.param('key_prefix', :string, :default => ''),
    'encode' => config.param('encode', :string, :default => 'json')
  }

  # resumable output:
  # resume(task, schema, count, &control)

  # non-resumable output:
  task_reports = yield(task)
  puts "Redis output finished. Commit reports = #{task_reports.to_json}"

  next_config_diff = {}
  return next_config_diff
end

Instance Method Details

#abort ⇒ Object 



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# File 'lib/embulk/output/rediskeys.rb', line 92

def abort
end

#add(page) ⇒ Object 



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# File 'lib/embulk/output/rediskeys.rb', line 52

def add(page)
  # output code:
  page.each do |records|
    puts "Schema: #{schema.names}"
    # puts "Record: #{records}"
    records.each do |record|
      hash = JSON.parse(record)

      k = nil
      v = hash.select{|key,v|
        k = key
        key.match(/^#{task['key_prefix']}/)
      }

      puts "KEY: #{k}"

      @processed_keys << k
      unless @unique_keys.include? k
        case task['encode']
        when 'json'
          v = v[k].to_json
          @redis.set(k, v)
        when 'hash'
          v = v[k]
          puts "VALUE: #{v}"
          puts "FLATTEN: #{v.to_a.flatten}"
          @redis.hmset(k, v.to_a.flatten)
        end
        @unique_keys << k
      else
        puts "Warning: #{k} is already exists"
      end
      @rows += 1  # inrement anyway
    end
  end
end

#close ⇒ Object 



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# File 'lib/embulk/output/rediskeys.rb', line 49

def close
end

#commit ⇒ Object 



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# File 'lib/embulk/output/rediskeys.rb', line 95

def commit
  task_report = {
    "rows" => @rows,
    "processed_keys" => @processed_keys.inspect,
    "unique_keys" => @unique_keys.inspect
  }
  return task_report
end

#finish ⇒ Object 



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# File 'lib/embulk/output/rediskeys.rb', line 89

def finish
end

#init ⇒ Object

def self.resume(task, schema, count, &control)

task_reports = yield(task)

next_config_diff = {}
return next_config_diff

end



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# File 'lib/embulk/output/rediskeys.rb', line 39

def init
  # initialization code:
  puts "Redis output thread #{index}..."
  super
  @rows = 0
  @processed_keys = [].to_set
  @unique_keys = [].to_set
  @redis = ::Redis.new(:host => task['host'], :port => task['port'], :db => task['db'])
end