Class: RubyMemcached::Server

Inherits:
Object
  • Object
show all
Defined in:
lib/ruby-memcached/Server.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(host, port) ⇒ Server

Returns a new instance of Server.



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# File 'lib/ruby-memcached/Server.rb', line 13

def initialize(host, port)
    @host = host
    @port = port
    @connection = TCPServer.new(host, port)
    @memc = Memcached.new()
end

Instance Attribute Details

#host ⇒ Object (readonly)

Returns the value of attribute host.



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# File 'lib/ruby-memcached/Server.rb', line 9

def host
  @host
end

#port ⇒ Object (readonly)

Returns the value of attribute port.



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# File 'lib/ruby-memcached/Server.rb', line 10

def port
  @port
end

#storage ⇒ Object

Returns the value of attribute storage.



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# File 'lib/ruby-memcached/Server.rb', line 11

def storage
  @storage
end

Instance Method Details

#add(client, command) ⇒ Object 



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# File 'lib/ruby-memcached/Server.rb', line 119

def add(client, command)
    key = command['key']
    flags = command['flags']
    exptime = command['exptime']
    bytes = command['bytes'].to_i()
    data = self.get_data(client, bytes)
    noreply = !command['noreply'].nil?
    
    response = @memc.add(key, flags, exptime, bytes, data)
    client.puts(response) unless noreply
end

#append(client, command) ⇒ Object 



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# File 'lib/ruby-memcached/Server.rb', line 143

def append(client, command)
    key = command['key']
    bytes = command['bytes'].to_i()
    data = self.get_data(client, bytes)
    noreply = !command['noreply'].nil?
    
    response = @memc.append(key, bytes, data)
    client.puts(response) unless noreply
end

#cas(client, command) ⇒ Object 



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# File 'lib/ruby-memcached/Server.rb', line 164

def cas(client, command)
    key = command['key']
    flags = command['flags']
    exptime = command['exptime']
    bytes = command['bytes'].to_i()
    data = self.get_data(client, bytes)
    cas_id = command['cas_id'].to_i()
    noreply = !command['noreply'].nil?
    
    response = @memc.cas(key, flags, exptime, bytes, cas_id, data)
    client.puts(response) unless noreply
end

#delete(client, command) ⇒ Object 



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# File 'lib/ruby-memcached/Server.rb', line 177

def delete(client, command)
    key = command['key']
    noreply = !command['noreply'].nil?

    response = @memc.delete(key)
    client.puts(response) unless noreply
end

#get(client, command) ⇒ Object 



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# File 'lib/ruby-memcached/Server.rb', line 87

def get(client, command)
    keys = command['keys'].split(' ')
    items = @memc.get_multi(keys)
    
    for item in items
        client.puts(Responses.get % [item.key, item.flags, item.bytes, item.data]) unless item.nil?()
    end
    client.puts(Responses.end)
end

#get_data(client, bytes) ⇒ Object 



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# File 'lib/ruby-memcached/Server.rb', line 83

def get_data(client, bytes)
    return client.read(bytes + 1).chomp()
end

#gets(client, command) ⇒ Object 



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# File 'lib/ruby-memcached/Server.rb', line 97

def gets(client, command)
    keys = command['keys'].split(' ')
    items = @memc.get_multi(keys)
    
    for item in items
        client.puts(Responses.gets % [item.key, item.flags, item.bytes, item.cas_id, item.data]) unless item.nil?()
    end
    client.puts(Responses.end)
end

#parse(command, client) ⇒ Object 



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# File 'lib/ruby-memcached/Server.rb', line 45

def parse(command, client)
    case command
        when CommandsRegex.get
            self.get(client, $~)
    
        when CommandsRegex.gets
            self.gets(client, $~)
    
        when CommandsRegex.set
            self.set(client, $~)
    
        when CommandsRegex.add
            self.add(client, $~)
            
        when CommandsRegex.replace
            self.replace(client, $~)
    
        when CommandsRegex.append
            self.append(client, $~)
    
        when CommandsRegex.prepend
            self.prepend(client, $~)
    
        when CommandsRegex.cas
            self.cas(client, $~)

        when CommandsRegex.delete
            self.delete(client, $~)

        when CommandsRegex.end
            return false;
        else
            client.puts(Errors.client_error % [": Invalid command"])
    end
    
    return true
end

#prepend(client, command) ⇒ Object 



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# File 'lib/ruby-memcached/Server.rb', line 153

def prepend(client, command)
    key = command['key']
    bytes = command['bytes'].to_i()
    data = self.get_data(client, bytes)
    noreply = !command['noreply'].nil?
    
    response = @memc.prepend(key, bytes, data)
    client.puts(response) unless noreply
    
end

#replace(client, command) ⇒ Object 



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# File 'lib/ruby-memcached/Server.rb', line 131

def replace(client, command)
    key = command['key']
    flags = command['flags']
    exptime = command['exptime']
    bytes = command['bytes'].to_i()
    data = self.get_data(client, bytes)
    noreply = !command['noreply'].nil?
    
    response = @memc.replace(key, flags, exptime, bytes, data)
    client.puts(response) unless noreply
end

#set(client, command) ⇒ Object 



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# File 'lib/ruby-memcached/Server.rb', line 107

def set(client, command)
    key = command['key']
    flags = command['flags']
    exptime = command['exptime']
    bytes = command['bytes'].to_i()
    data = self.get_data(client, bytes)
    noreply = !command['noreply'].nil?
    
    response = @memc.set(key, flags, exptime, bytes, data)
    client.puts(response) unless noreply
end

#start ⇒ Object 



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# File 'lib/ruby-memcached/Server.rb', line 20

def start
    loop do
        Thread.start(@connection.accept()) do | client |
        
            puts('Opening connection to %s' % client.to_s)
    
            continue_condition = true
    
            while command = client.gets()
                printf('%s: %s' % [client.to_s(), command])
                begin
                    continue_condition = parse(command, client) unless command.nil?                        
                rescue => e
                    client.puts(Errors.server_error % e.message)
                    puts(Errors.server_error % e.message)
                end
                break unless continue_condition
            end
    
            client.close()
            puts('Closing connection to %s' % [client.to_s()])
        end
    end
end

#start_gc(interval, loops = nil) ⇒ Object 



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# File 'lib/ruby-memcached/Server.rb', line 185

def start_gc(interval, loops = nil)

    while loops.nil?() || loops > 0
        sleep(interval)
        puts('Garbage collector deleted: %d' % @memc.check_exptimes())
        loops -= 1 unless loops.nil?()
    end
end