/usr/bin/kumohash is in kumofs 0.4.13-6.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 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 61 62 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 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 | #!/usr/bin/env ruby
#
# kumofs
#
# Copyright (C) 2009 FURUHASHI Sadayuki
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
load File.dirname(__FILE__) + "/kumoctl"
if $0 == __FILE__
def usage
puts "Usage: #{File.basename($0)} server-address[:port=#{KumoRPC::SERVER_DEFAULT_PORT}] ... -- command [options]"
puts " #{File.basename($0)} -m manager-address[:port=#{KumoRPC::MANAGER_DEFAULT_PORT}] command [options]"
puts "command:"
puts " hash keys... calculate hash of keys"
puts " assign keys... calculate assign node"
puts " dump dump hash space"
exit 1
end
if ARGV.empty?
usage
end
if ARGV[0] == "-m"
ARGV.shift
usage if ARGV.empty?
@manager = ARGV.shift
else
i = ARGV.index("--") || ARGV.length
@servers = ARGV.slice!(0, i)
ARGV.shift # skip "--"
end
def create_hs
hs = KumoRPC::HashSpace.new
if @manager
host, port = @manager.split(':', 2)
port ||= KumoRPC::MANAGER_DEFAULT_PORT
mgr = KumoManager.new(host, port)
attached, not_attached, date, clock = mgr.GetStatus
mgr.close
attached.each {|host, port, active|
hs.add_server(host, port, active)
}
else
@servers.each {|addr|
host, port = addr.split(':', 2)
port ||= KumoRPC::MANAGER_DEFAULT_PORT
hs.add_server(host, port, true)
}
end
hs
end
usage if ARGV.empty?
cmd = ARGV.shift
case cmd
when "hash"
usage if ARGV.empty?
ARGV.each {|key|
puts "%016x %s" % [KumoRPC::HashSpace::hash(key), key]
}
when "dump"
usage unless ARGV.empty?
hs = create_hs
hs.space.each {|v|
puts "%016x %s:%s" % [v.hash, v.real.addr, v.real.port]
}
when "assign"
usage if ARGV.empty?
hs = create_hs
ARGV.each {|key|
assign = []
hs.find_each(key) {|real|
if assign.include?(real)
true
else
assign << real
assign.length < 3
end
}
puts "%016x %s" % [KumoRPC::HashSpace::hash(key), key]
assign.each_with_index {|real,i|
puts " #{i}: #{real.addr}:#{real.port}"
}
}
else
puts "unknown command #{cmd}"
puts ""
usage
end
=begin
hs = KumoRPC::HashSpace.new
ARGV[0].split(',').each {|addr|
host, port = addr.split(':', 2)
port ||= KumoRPC::SERVER_DEFAULT_PORT
port = port.to_i
hs.add_server(host, port)
}
hs.instance_eval {
@space.each {|v|
puts "%016x:%s:%s" % [v.hash, v.real.addr, v.real.port]
}
}
k = ARGV[1]
h = KumoRPC::HashSpace.hash(k)
key = [h].pack('Q') + k
use = []
hs.find_each(h) {|real|
if use.include?(real)
true
else
use << real
use.length < 3
end
}
use.each_with_index {|real,i|
if i == 0
puts "primary: #{real.addr}:#{real.port}"
else
puts " backup: #{real.addr}:#{real.port}"
end
}
=end
end # if $0 == __FILE__
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