Ruby plugins: apply code changes as suggested by "rubocop --auto-correct"

plugins/passenger/passenger_memory

@@ -11,11 +11,11 @@
 memory_stats_command = ENV['memory_stats_command'] || '/opt/ruby-enterprise-1.8.6-20080810/bin/passenger-memory-stats'
 
 if ARGV.length > 0 && ARGV[0] == 'config'
-  puts "graph_title Passenger Memory Usage"
-  puts "graph_category webserver"
-  puts "graph_vlabel MB"
-  puts "apache_rss.label Apache Dirty RSS"
-  puts "passenger_rss.label Passenger Dirty RSS"
+  puts 'graph_title Passenger Memory Usage'
+  puts 'graph_category webserver'
+  puts 'graph_vlabel MB'
+  puts 'apache_rss.label Apache Dirty RSS'
+  puts 'passenger_rss.label Passenger Dirty RSS'
   exit(0)
 end
 

plugins/passenger/passenger_processes

@@ -8,13 +8,13 @@
 process_stats_command = ENV['process_stats_command'] || '/opt/ruby-enterprise-1.8.6-20080810/bin/passenger-status'
 
 if ARGV.length > 0 && ARGV[0] == 'config'
-  puts "graph_title Passenger Processes"
-  puts "graph_category webserver"
-  puts "graph_vlabel processes"
-  puts "max.label Max processes"
-  puts "count.label Total processes"
-  puts "active.label Active processes"
-  puts "queued.label Queued requests"
+  puts 'graph_title Passenger Processes'
+  puts 'graph_category webserver'
+  puts 'graph_vlabel processes'
+  puts 'max.label Max processes'
+  puts 'count.label Total processes'
+  puts 'active.label Active processes'
+  puts 'queued.label Queued requests'
   exit(0)
 end
 
@@ -24,13 +24,14 @@ active = nil
 queued = nil
 
 `#{process_stats_command}`.each_line do |line|
-  if /max\s+=\s+(\d+)/.match(line)
+  case line
+  when /max\s+=\s+(\d+)/
     max = $~[1]
-  elsif /count\s+=\s+(\d+)/.match(line)
+  when /count\s+=\s+(\d+)/
     count = $~[1]
-  elsif /^active\s+=\s+(\d+)/.match(line)
+  when /^active\s+=\s+(\d+)/
     active = $~[1]
-  elsif /Waiting on global queue\s+=\s+(\d+)/.match(line)
+  when /Waiting on global queue\s+=\s+(\d+)/
     queued = $~[1]
   end
 end

plugins/passenger/passenger_status

@@ -28,27 +28,27 @@ end
 def output_values
   status = `sudo passenger-status`
   unless $?.success?
-    $stderr.puts "failed executing passenger-status"
+    warn 'failed executing passenger-status'
     exit 1
   end
   status =~ /max\s+=\s+(\d+)/
-  puts "max.value #{$1}"
+  puts "max.value #{Regexp.last_match(1)}"
 
   status =~ /count\s+=\s+(\d+)/
-  puts "running.value #{$1}"
+  puts "running.value #{Regexp.last_match(1)}"
 
   status =~ /active\s+=\s+(\d+)/
-  puts "active.value #{$1}"
+  puts "active.value #{Regexp.last_match(1)}"
 
   status =~ /Waiting on global queue:\s+(\d+)/
-  puts "waiting.value #{$1}"
+  puts "waiting.value #{Regexp.last_match(1)}"
 
   total_sessions = 0
   status.scan(/Sessions: (\d+)/).flatten.each { |count| total_sessions += count.to_i }
   puts "sessions.value #{total_sessions}"
 end
 
-if ARGV[0] == "config"
+if ARGV[0] == 'config'
   output_config
 else
   output_values