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Size: 1.78 KB
Versions: 32
Compression:
Stored size: 1.78 KB
Contents
module LogjamAgent
module Util
# copied from amqp protocol gem (slightly modified)
BIG_ENDIAN = ([1].pack("s") == "\x00\x01")
UINT64 = "Q"
META_INFO_VERSION = 1
META_INFO_TAG = 0xcabd
META_INFO_DEVICE_NUMBER = 0
# we assume we're running on MRI ruby
FIXNUM_MAX = 2 ** (1.size * 8 - 2) - 1
if BIG_ENDIAN
def pack_uint64_big_endian(uint64)
[uint64].pack(UINT64)
end
def unpack_uint64_big_endian(string)
string.unpack(UINT64)
end
else
def pack_uint64_big_endian(uint64)
[uint64].pack(UINT64).bytes.map(&:chr).reverse.join
end
def unpack_uint64_big_endian(string)
string.bytes.map(&:chr).reverse.join.unpack(UINT64)[0]
end
end
def zclock_time(t = Time.now)
t.tv_sec*1000 + t.tv_usec/1000
end
def next_fixnum(i)
(i+=1) > FIXNUM_MAX ? 1 : i
end
def pack_info(n, compression_method = LogjamAgent.compression_method)
info = [META_INFO_TAG, compression_method, META_INFO_VERSION, META_INFO_DEVICE_NUMBER].pack("nCCN")
info << pack_uint64_big_endian(zclock_time)
info << pack_uint64_big_endian(n)
end
def unpack_info(info)
tag, compression_method, version, device = info[0..7].unpack("nCCN")
zclock = unpack_uint64_big_endian(info[8..15])
secs = zclock / 1000
msecs = zclock % 1000
sent = Time.at(secs) + 1000.0/msecs
sequence = unpack_uint64_big_endian(info[16..23])
[tag, compression_method, version, device, sent, sequence]
end
def augment_connection_spec(spec, default_port)
protocol, host, port = %r{\A(?:([^:]+)://)?([^:]+)(?::(\d+))?\z}.match(spec).captures
protocol ||= "tcp"
port ||= default_port
"#{protocol}://#{host}:#{port}"
end
end
end
Version data entries
32 entries across 32 versions & 1 rubygems