Class: Valkey

Inherits:
Object
  • Object
show all
Includes:
Commands, PubSubCallback, Utils
Defined in:
lib/valkey.rb,
lib/valkey/utils.rb,
lib/valkey/errors.rb,
lib/valkey/version.rb,
lib/valkey/bindings.rb,
lib/valkey/commands.rb,
lib/valkey/pipeline.rb,
lib/valkey/request_type.rb,
lib/valkey/response_type.rb,
lib/valkey/pubsub_callback.rb,
lib/valkey/request_error_type.rb,
lib/valkey/commands/geo_commands.rb,
lib/valkey/commands/list_commands.rb,
lib/valkey/commands/bitmap_commands.rb,
lib/valkey/commands/server_commands.rb,
lib/valkey/commands/string_commands.rb,
lib/valkey/commands/generic_commands.rb,
lib/valkey/commands/connection_commands.rb,
lib/valkey/commands/sorted_set_commands.rb,
lib/valkey/commands/hyper_log_log_commands.rb

Defined Under Namespace

Modules: Bindings, Commands, PubSubCallback, RequestErrorType, RequestType, ResponseType, Utils Classes: BaseConnectionError, BaseError, CannotConnectError, CommandError, ConnectionError, InheritedError, InvalidClientOptionError, NoScriptError, OutOfMemoryError, PermissionError, Pipeline, ProtocolError, ReadOnlyError, SubscriptionError, TimeoutError, WrongTypeError

Constant Summary collapse

VERSION = 
"0.1.0"

Constants included from Utils

Utils::Boolify, Utils::BoolifySet, Utils::Floatify, Utils::FloatifyPair, Utils::FloatifyPairs, Utils::Hashify, Utils::HashifyClusterNodeInfo, Utils::HashifyClusterNodes, Utils::HashifyClusterSlaves, Utils::HashifyClusterSlots, Utils::HashifyInfo, Utils::HashifyStreamAutoclaim, Utils::HashifyStreamAutoclaimJustId, Utils::HashifyStreamEntries, Utils::HashifyStreamPendingDetails, Utils::HashifyStreamPendings, Utils::HashifyStreams, Utils::Noop, Utils::Pairify

Instance Method Summary collapse

Methods included from PubSubCallback

#pubsub_callback

Methods included from Commands::SortedSetCommands

#zadd, #zcard, #zincrby, #zrank, #zrem, #zrevrank, #zscore

Methods included from Commands::HyperLogLogCommands

#pfadd, #pfcount, #pfmerge

Methods included from Commands::GeoCommands

#geoadd, #geodist, #geohash, #geopos, #geosearch, #geosearchstore

Methods included from Commands::ListCommands

#blmove, #blmpop, #blpop, #brpop, #brpoplpush, #lindex, #linsert, #llen, #lmove, #lmpop, #lpop, #lpush, #lpushx, #lrange, #lrem, #lset, #ltrim, #rpop, #rpoplpush, #rpush, #rpushx

Methods included from Commands::BitmapCommands

#bitcount, #bitfield, #bitfield_ro, #bitop, #bitpos, #getbit, #setbit

Methods included from Commands::GenericCommands

#_scan, #copy, #del, #dump, #exists, #exists?, #expire, #expireat, #expiretime, #move, #object, #persist, #pexpire, #pexpireat, #pexpiretime, #pttl, #randomkey, #rename, #renamenx, #restore, #scan, #sort, #touch, #ttl, #type, #unlink, #wait, #waitof

Methods included from Commands::ServerCommands

#bgrewriteaof, #bgsave, #client, #config, #dbsize, #debug, #flushall, #flushdb, #info, #lastsave, #monitor, #save, #shutdown, #slaveof, #slowlog, #sync, #time

Methods included from Commands::ConnectionCommands

#auth, #echo, #ping, #quit, #select

Methods included from Commands::StringCommands

#append, #decr, #decrby, #get, #getdel, #getex, #getrange, #getset, #incr, #incrby, #incrbyfloat, #lcs, #mapped_mget, #mapped_mset, #mapped_msetnx, #mget, #mset, #msetnx, #psetex, #set, #setex, #setnx, #setrange, #strlen

Constructor Details

#initialize(options = {}) ⇒ Valkey

Returns a new instance of Valkey.



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# File 'lib/valkey.rb', line 199

def initialize(options = {})
  host = options[:host] || "127.0.0.1"
  port = options[:port] || 6379

  request = ConnectionRequest::ConnectionRequest.new(
    addresses: [ConnectionRequest::NodeAddress.new(host: host, port: port)]
  )

  client_type = Bindings::ClientType.new
  client_type[:tag] = 1 # AsyncClient

  request_str = ConnectionRequest::ConnectionRequest.encode(request)
  request_buf = FFI::MemoryPointer.new(:char, request_str.bytesize)
  request_buf.put_bytes(0, request_str)

  request_len = request_str.bytesize

  response_ptr = Bindings.create_client(
    request_buf,
    request_len,
    client_type,
    method(:pubsub_callback)
  )

  res = Bindings::ConnectionResponse.new(response_ptr)

  @connection = res[:conn_ptr]
end

Instance Method Details

#build_command_args(command_args) ⇒ Object 



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# File 'lib/valkey.rb', line 84

def build_command_args(command_args)
  arg_ptrs = FFI::MemoryPointer.new(:pointer, command_args.size)
  arg_lens = FFI::MemoryPointer.new(:ulong, command_args.size)
  buffers = []

  command_args.each_with_index do |arg, i|
    arg = arg.to_s # Ensure we convert to string

    buf = FFI::MemoryPointer.from_string(arg.to_s)
    buffers << buf # prevent garbage collection
    arg_ptrs.put_pointer(i * FFI::Pointer.size, buf)
    arg_lens.put_ulong(i * 8, arg.bytesize)
  end

  [arg_ptrs, arg_lens]
end

#close ⇒ Object Also known as: disconnect! 



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# File 'lib/valkey.rb', line 228

def close
  Bindings.close_client(@connection)
end

#convert_response(res, &block) ⇒ Object 



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# File 'lib/valkey.rb', line 101

def convert_response(res, &block)
  result = Bindings::CommandResult.new(res)

  if result[:response].null?
    error = result[:command_error]

    case error[:command_error_type]
    when RequestErrorType::EXECABORT, RequestErrorType::UNSPECIFIED
      raise CommandError, error[:command_error_message]
    when RequestErrorType::TIMEOUT
      raise TimeoutError, error[:command_error_message]
    when RequestErrorType::DISCONNECT
      raise ConnectionError, error[:command_error_message]
    else
      raise "Unknown error type: #{error[:command_error_type]}"
    end
  end

  result = result[:response]

  convert_response = lambda { |result|
    # TODO: handle all types of responses
    case result[:response_type]
    when ResponseType::STRING
      result[:string_value].read_string(result[:string_value_len])
    when ResponseType::INT
      result[:int_value]
    when ResponseType::FLOAT
      result[:float_value]
    when ResponseType::BOOL
      result[:bool_value]
    when ResponseType::ARRAY
      ptr = result[:array_value]
      count = result[:array_value_len].to_i

      Array.new(count) do |i|
        item = Bindings::CommandResponse.new(ptr + i * Bindings::CommandResponse.size)
        convert_response.call(item)
      end
    when ResponseType::MAP
      return nil if result[:array_value].null?

      ptr = result[:array_value]
      count = result[:array_value_len].to_i
      map = {}

      Array.new(count) do |i|
        item = Bindings::CommandResponse.new(ptr + i * Bindings::CommandResponse.size)

        map_key = convert_response.call(Bindings::CommandResponse.new(item[:map_key]))
        map_value = convert_response.call(Bindings::CommandResponse.new(item[:map_value]))

        map[map_key] = map_value
      end

      # technically it has to return a Hash, but as of now we return just one pair
      map.to_a.flatten(1) # Flatten to get pairs
    when ResponseType::NULL
      nil
    when ResponseType::OK
      "OK"
    else
      raise "Unsupported response type: #{result[:response_type]}"
    end
  }

  response = convert_response.call(result)

  if block_given?
    block.call(response)
  else
    response
  end
end

#pipelined(exception: true) {|pipeline| ... } ⇒ Object

Yields:

  • (pipeline) 


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# File 'lib/valkey.rb', line 25

def pipelined(exception: true)
  pipeline = Pipeline.new

  yield pipeline

  return if pipeline.commands.empty?

  send_batch_commands(pipeline.commands, exception: exception)
end

#send_batch_commands(commands, exception: true) ⇒ Object 



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# File 'lib/valkey.rb', line 35

def send_batch_commands(commands, exception: true)
  cmds = []
  blocks = []

  commands.each do |command_type, command_args, block|
    arg_ptrs, arg_lens = build_command_args(command_args)

    cmd = Bindings::CmdInfo.new
    cmd[:request_type] = command_type
    cmd[:args] = arg_ptrs
    cmd[:arg_count] = command_args.size
    cmd[:args_len] = arg_lens

    cmds << cmd
    blocks << block
  end

  batch_info = Bindings::BatchInfo.new
  batch_info[:cmd_count] = cmds.size
  batch_info[:cmds] = FFI::MemoryPointer.new(Bindings::CmdInfo, cmds.size)

  cmds.each_with_index do |cmd, i|
    batch_info[:cmds].put_pointer(i * Bindings::CmdInfo.size, cmd.to_ptr)
  end

  batch_options = Bindings::BatchOptionsInfo.new
  batch_options[:retry_server_error] = true
  batch_options[:retry_connection_error] = true
  batch_options[:has_timeout] = false
  batch_options[:timeout] = 0 # No timeout

  res = Bindings.batch(
    @connection, # Assuming @connection is set after create
    0,
    batch_info,
    exception,
    batch_options,
    0
  )

  results = convert_response(res)

  blocks.each_with_index do |block, i|
    results[i] = block.call(results[i]) if block
  end

  results
end

#send_command(command_type, command_args = [], &block) ⇒ Object 



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# File 'lib/valkey.rb', line 176

def send_command(command_type, command_args = [], &block)
  channel = 0
  route = ""

  route_buf = FFI::MemoryPointer.from_string(route)

  arg_ptrs, arg_lens = build_command_args(command_args)

  res = Bindings.command(
    @connection, # Assuming @connection is set after create
    channel,
    command_type,
    command_args.size,
    arg_ptrs,
    arg_lens,
    route_buf,
    route.bytesize,
    0
  )

  convert_response(res, &block)
end