Class: ConcertoConfig::StaticAddressing

Inherits:
Object
  • Object
show all
Defined in:
lib/concerto_client/netconfig.rb

Overview

Static IPv4 addressing. We use the IPAddress gem to validate that the address information is vaguely correct (weeding out errors like the gateway being on another subnet)

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(args = {}) ⇒ StaticAddressing

Returns a new instance of StaticAddressing.



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# File 'lib/concerto_client/netconfig.rb', line 313

def initialize(args={})
    @nameservers = args['nameservers']
    @address = args['address']
    @netmask = args['netmask']
    @gateway = args['gateway']
end

Instance Attribute Details

#address ⇒ Object

Returns the value of attribute address.



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# File 'lib/concerto_client/netconfig.rb', line 354

def address
  @address
end

#gateway ⇒ Object

Returns the value of attribute gateway.



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# File 'lib/concerto_client/netconfig.rb', line 354

def gateway
  @gateway
end

#nameservers ⇒ Object

Returns the value of attribute nameservers.



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# File 'lib/concerto_client/netconfig.rb', line 354

def nameservers
  @nameservers
end

#netmask ⇒ Object

Returns the value of attribute netmask.



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# File 'lib/concerto_client/netconfig.rb', line 354

def netmask
  @netmask
end

Class Method Details

.description ⇒ Object 



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# File 'lib/concerto_client/netconfig.rb', line 350

def self.description
    "Static Addressing"
end

Instance Method Details

#addressing_type ⇒ Object 



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# File 'lib/concerto_client/netconfig.rb', line 320

def addressing_type
    'static'
end

#args ⇒ Object 



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# File 'lib/concerto_client/netconfig.rb', line 324

def args
    {
        'address' => @address,
        'netmask' => @netmask,
        'gateway' => @gateway,
        'nameservers' => @nameservers
    }
end

#interfaces_lines ⇒ Object 



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# File 'lib/concerto_client/netconfig.rb', line 333

def interfaces_lines
    [
        "address #{@address}",
        "netmask #{@netmask}",
        "gateway #{@gateway}"
    ]
end

#nameservers_flat ⇒ Object 



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# File 'lib/concerto_client/netconfig.rb', line 397

def nameservers_flat
    @nameservers.join(',')
end

#nameservers_flat=(separated_list) ⇒ Object

These next two methods are for the web interface, where it’s more convenient to enter a bunch of nameservers on one line than to have to deal with an array of fields.



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# File 'lib/concerto_client/netconfig.rb', line 385

def nameservers_flat=(separated_list)
    servers = separated_list.strip.split(/\s*[,|:;\s]\s*/)
    servers.each do |server|
        server.strip!
        p server
        if not IPAddress.valid? server
            fail "One or more invalid IP addresses in nameserver list"
        end
    end
    @nameservers = servers
end

#safe_assign ⇒ Object 



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# File 'lib/concerto_client/netconfig.rb', line 356

def safe_assign
    [ :address, :netmask, :gateway, :nameservers_flat ]
end

#validate ⇒ Object 



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# File 'lib/concerto_client/netconfig.rb', line 360

def validate
    @address.strip!
    @netmask.strip!
    @gateway.strip!

    if not IPAddress.valid_ipv4?(@address)
        fail "Static address is invalid"
    end

    p @netmask
    if not IPAddress.valid_ipv4_netmask?(@netmask)
        fail "Static netmask is invalid"
    end

    p @netmask
    subnet = IPAddress::IPv4.new(@address)
    subnet.netmask = @netmask
    if not subnet.include? IPAddress::IPv4.new(gateway)
        fail "Gateway provided is unreachable"
    end
end

#write_configs ⇒ Object 



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# File 'lib/concerto_client/netconfig.rb', line 342

def write_configs
    File.open('/etc/resolv.conf','w') do |resolvconf|
        @nameservers.each do |nameserver|
            resolvconf.puts("nameserver #{nameserver}");
        end
    end
end