Class: Valkey

Inherits:
Object
  • Object
show all
Extended by:
Bindings
Includes:
Commands
Defined in:
lib/valkey.rb,
lib/valkey/errors.rb,
lib/valkey/version.rb,
lib/valkey/bindings.rb,
lib/valkey/commands.rb,
lib/valkey/request_type.rb,
lib/valkey/response_type.rb,
lib/valkey/commands/server.rb,
lib/valkey/commands/strings.rb,
lib/valkey/commands/connection.rb

Defined Under Namespace

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

Constant Summary collapse

VERSION = 
"0.1.0"

Instance Method Summary collapse

Methods included from Commands::Server

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

Methods included from Commands::Connection

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

Methods included from Commands::Strings

#get, #set

Constructor Details

#initialize(_options = {}) ⇒ Valkey

TODO: use options



63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
 
# File 'lib/valkey.rb', line 63

def initialize(_options = {})
  request = ConnectionRequest::ConnectionRequest.new(
    addresses: [ConnectionRequest::NodeAddress.new(host: "127.0.0.1", port: 6379)]
  )

  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(:your_pubsub_callback) # Pass the pubsub callback
  )

  res = Bindings::ConnectionResponse.new(response_ptr)

  @connection = res[:conn_ptr]
end

Instance Method Details

#close ⇒ Object Also known as: disconnect! 



89
90
91
 
# File 'lib/valkey.rb', line 89

def close
  # TODO: handle closing the connection properly
end

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



24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
 
# File 'lib/valkey.rb', line 24

def send_command(command_type, command_args = [])
  channel = 0
  route = "" # empty or some serialized route bytes

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

  route_buf = FFI::MemoryPointer.from_string(route)

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

  result = Bindings::CommandResult.new(res)[:response]

  case result[:response_type]
  when ResponseType::STRING
    result[:string_value].read_string(result[:string_value_len])
  when ResponseType::OK
    "OK"
  end
end

#your_pubsub_callback(_client_ptr, kind, msg_ptr, msg_len, chan_ptr, chan_len, pat_ptr, pat_len) ⇒ Object 



20
21
22
 
# File 'lib/valkey.rb', line 20

def your_pubsub_callback(_client_ptr, kind, msg_ptr, msg_len, chan_ptr, chan_len, pat_ptr, pat_len)
  puts "PubSub received kind=#{kind}, message=#{msg_ptr.read_string(msg_len)}, channel=#{chan_ptr.read_string(chan_len)}, pattern=#{pat_ptr.read_string(pat_len)}"
end