Cast a returned array to appropriate values - ruby

Question

I've got the following code snippet which I'm trying to return to Shoes as an array of integers and strings
Shoes.setup do
gem 'snmp'
end
class SNMPManager
require 'snmp'
include SNMP
attr_accessor :hostname, :framerate
def initialize(params = {})
#hostname = params.fetch(:hostname, 'localhost')
#framerate = params.fetch(:framerate, 25)
end
def getValues
Manager.open(:host => #hostname, :mib_modules => ["SNMPv2-MIB"]) do |manager|
poolArray = []
ifTable = ObjectId.new("1.3.6.1.4.1.15248.2.5.1.3.1")
manager.walk(ifTable) do |row|
poolArray.push(row.inspect)
end
groups = poolArray.group_by{ |s| s.split(',').first[/\d+$/] }
#values = groups.map{ |key, ary| ary.map{ |s| s[/value=(\S+)/, 1] } }
end
end
def to_s
return #values
end
end
Shoes.app do
##hostname = edit_line
#man =SNMPManager.new(:host => #hostname)
man = SNMPManager.new
man.getValues
puts 'SNMP Space Monitor'
man.to_s.each {|v|
#note = para "#{v[1]} \t(Pool: #{v[0]}) \tCapacity: #{v[3].to_i} \tFree Protons: #{v[2].to_i} \tPercent Free: %#{(v[3].to_f/v[2].to_f*100).round(2)}"
}
end
For some reason Shoes is displaying it like:
But if I run the ruby script normally, and output it with puts, it displays correctly, and calculates the response correctly.
I know I'm missing something obvious, but can't see what it is.
I'm trying to cast the array to another array, but that seems to do bugger all.

Answer 1

1)
#values = Array(#values)
That is a bit odd. All the Array constructor does is create a copy of #values. The only reason you would do that is if #values contains a reference to some array that is referenced by another variable, and you don't want that other variable to be able to change #values. But then why didn't you make a copy when you first assigned the array to #values?
2) Your to_s method does not return a string.

Answer 2

This is a great way to use Shoes.
It looks like Shoes is giving you paras containing array_of_integers_and_strings.to_s.
Complete code would be super helpful.

Answer 3

Resolved the issue by switching from 'red shoes' to 'green shoes'
No other changes required, but here's my current code (which successfully times out when run as a console app. but not as a shoes app - go figure)
require 'green_shoes'
gem 'snmp'
class SNMPManager
require 'snmp'
include SNMP
attr_accessor :hostname, :framerate
def initialize(params = {})
#hostname = params.fetch(:hostname, 'localhost')
#framerate = params.fetch(:framerate, 25)
end
def getValues
Manager.open(:host => #hostname) do |manager|
#poolArray = []
poolsTable = ObjectId.new("1.3.6.1.4.1.15248.2.5.1.3.1")
manager.walk(poolsTable) do |row|
#poolArray.push(row.inspect)
end
if #poolArray.empty?
puts "Manager Down"
#poolArray = [
'[name=1.3.6.1.4.1.15248.2.5.1.3.1.1.8650, value=8650 (INTEGER)]',
'[name=1.3.6.1.4.1.15248.2.5.1.3.1.1.8651, value=8651 (INTEGER)]',
'[name=1.3.6.1.4.1.15248.2.5.1.3.1.2.8650, value=QNewsAK (OCTET STRING)]',
'[name=1.3.6.1.4.1.15248.2.5.1.3.1.2.8651, value=QSuite4AK (OCTET STRING)]',
'[name=1.3.6.1.4.1.15248.2.5.1.3.1.3.8650, value=46835255 (INTEGER)]',
'[name=1.3.6.1.4.1.15248.2.5.1.3.1.3.8651, value=11041721 (INTEGER)]',
'[name=1.3.6.1.4.1.15248.2.5.1.3.1.4.8650, value=8442357 (INTEGER)]',
'[name=1.3.6.1.4.1.15248.2.5.1.3.1.4.8651, value=5717570 (INTEGER)]',
'[name=1.3.6.1.4.1.15248.2.5.1.3.1.5.8650, value=0 (INTEGER)]',
'[name=1.3.6.1.4.1.15248.2.5.1.3.1.5.8651, value=0 (INTEGER)]',
]
else puts "Manager Up"
end
groups = #poolArray.group_by{ |s| s.split(',').first[/\d+$/] }
#values = groups.map{ |key, ary| ary.map{ |s| s[/value=(\S+)/, 1] } }
end
end
def to_s
return #values
end
protected
end
Shoes.app(:title=>'SNMP Space Monitor') do
man = SNMPManager.new
stack do
every(300) {
man.getValues
man.to_s
man.to_s.each {|v|
para "#{v[1]} \t(Pool: #{v[0]}) \tCapacity: #{v[2].to_i} \tFree Protons: #{v[3].to_i} \tPercent Free: #{(v[3].to_f/v[2].to_f*100).round(2)}%"
}
}
end
end