Class: Aerospike::MultiCommand

Inherits:
Command
  • Object
show all
Defined in:
lib/aerospike/command/multi_command.rb

Overview

:nodoc:

Instance Method Summary collapse

Methods inherited from Command

#execute, #set_delete, #set_exists, #set_operate, #set_read, #set_read_for_key_only, #set_read_header, #set_scan, #set_touch, #set_udf, #set_write, #write_bins

Constructor Details

#initialize(node) ⇒ MultiCommand

Returns a new instance of MultiCommand.



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# File 'lib/aerospike/command/multi_command.rb', line 26

def initialize(node)
  super(node)

  @valid = true
  @mutex = Mutex.new

  @compressed_data_buffer = nil
  @compressed_data_offset = nil

  self
end

Instance Method Details

#compressed? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/aerospike/command/multi_command.rb', line 217

def compressed?
  @compressed_data_buffer != nil
end

#get_node ⇒ Object 



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# File 'lib/aerospike/command/multi_command.rb', line 38

def get_node
  @node
end

#parse_group(receive_size) ⇒ Object 



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# File 'lib/aerospike/command/multi_command.rb', line 91

def parse_group(receive_size)
  @data_offset = 0

  while @data_offset < receive_size
    read_bytes(MSG_REMAINING_HEADER_SIZE)
    result_code = @data_buffer.read(5).ord & 0xFF

    # The only valid server return codes are "ok", "not found" and "filtered out".
    # If other return codes are received, then abort the batch.
    if result_code != 0 
        if result_code == Aerospike::ResultCode::KEY_NOT_FOUND_ERROR || result_code == Aerospike::ResultCode::FILTERED_OUT
        else
          raise Aerospike::Exceptions::Aerospike.new(result_code)
        end
    end

    # If cmd is the end marker of the response, do not proceed further
    info3 = @data_buffer.read(3).ord
    return false if (info3 & INFO3_LAST) == INFO3_LAST

    parse_row(result_code)
  end

  true
end

#parse_key(field_count) ⇒ Object 



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# File 'lib/aerospike/command/multi_command.rb', line 117

def parse_key(field_count)
  # in Stream queries, there are no keys
  return unless field_count > 0

  digest = nil
  namespace = nil
  set_name = nil
  user_key = nil

  i = 0
  while i < field_count
    read_bytes(4)

    fieldlen = @data_buffer.read_int32(0)
    read_bytes(fieldlen)

    fieldtype = @data_buffer.read(0).ord
    size = fieldlen - 1

    case fieldtype
    when Aerospike::FieldType::DIGEST_RIPE
      digest = @data_buffer.read(1, size)
    when Aerospike::FieldType::NAMESPACE
      namespace = @data_buffer.read(1, size).force_encoding('utf-8')
    when Aerospike::FieldType::TABLE
      set_name = @data_buffer.read(1, size).force_encoding('utf-8')
    when Aerospike::FieldType::KEY
      user_key = Aerospike::bytes_to_key_value(@data_buffer.read(1).ord, @data_buffer, 2, size-1)
    end

    i = i.succ
  end

  Aerospike::Key.new(namespace, set_name, user_key, digest)
end

#parse_record(key, op_count, generation, expiration) ⇒ Object

Parses the given byte buffer and populate the result object. Returns the number of bytes that were parsed from the given buffer.



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# File 'lib/aerospike/command/multi_command.rb', line 155

def parse_record(key, op_count, generation, expiration)
  bins = op_count > 0 ? {} : nil
  i = 0
  while i < op_count
    raise Aerospike::Exceptions::QueryTerminated.new unless valid?

    read_bytes(8)

    op_size = @data_buffer.read_int32(0).ord
    particle_type = @data_buffer.read(5).ord
    name_size = @data_buffer.read(7).ord

    read_bytes(name_size)
    name = @data_buffer.read(0, name_size).force_encoding('utf-8')

    particle_bytes_size = op_size - (4 + name_size)
    read_bytes(particle_bytes_size)
    value = Aerospike.bytes_to_particle(particle_type, @data_buffer, 0, particle_bytes_size)

    bins[name] = value

    i = i.succ
  end

  Record.new(@node, key, bins, generation, expiration)
end

#parse_result ⇒ Object 



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# File 'lib/aerospike/command/multi_command.rb', line 42

def parse_result
  # Read socket into receive buffer one record at a time.  Do not read entire receive size
  # because the receive buffer would be too big.
  status = true

  while status
    @data_offset = 0
    @compressed_data_buffer = nil

    # Read header.
    read_bytes(8)

    size = @data_buffer.read_int64(0)
    receive_size = size & 0xFFFFFFFFFFFF

    # inflate if compressed
    compressed_sz = compressed_size
    if compressed_sz
      begin
        # read compressed msg header
        @conn.read(@data_buffer, 8)

        # read compressed message
        @conn.read(@data_buffer, compressed_sz - 8)

        # inflate the results
        # TODO: reuse the current buffer
        uncompressed = Zlib::inflate(@data_buffer.buf)
        receive_size = uncompressed.size - 8

        @compressed_data_buffer = Buffer.new(-1, uncompressed)
        @compressed_data_offset = 0

        # waste the first 8 header bytes
        @compressed_data_buffer.eat!(8)
      rescue => e
        Aerospike.logger.error("parse result error: #{e}")
        raise e
      end
    end

    if receive_size > 0
      status = parse_group(receive_size)
    else
      status = false
    end
  end
end

#read_bytes(length) ⇒ Object 



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# File 'lib/aerospike/command/multi_command.rb', line 182

def read_bytes(length)
  if length > @data_buffer.length
    # Corrupted data streams can result in a huge length.
    # Do a sanity check here.
    if length > Aerospike::Buffer::MAX_BUFFER_SIZE
      raise Aerospike::Exceptions::Parse.new("Invalid read_bytes length: #{length}")
    end
    @data_buffer = Buffer.new(length)
  end

  if compressed?
    @data_buffer.write_binary(@compressed_data_buffer.buf[@compressed_data_offset...@compressed_data_offset+length], 0)
    @compressed_data_offset += length
  else
    @conn.read(@data_buffer, length)
  end

  @data_offset += length
end

#stop ⇒ Object 



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# File 'lib/aerospike/command/multi_command.rb', line 202

def stop
  @mutex.synchronize do
    @valid = false
  end
end

#valid? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/aerospike/command/multi_command.rb', line 208

def valid?
  res = nil
  @mutex.synchronize do
    res = @valid
  end

  res
end