Add a script to count the number of active Gerrit projects

Author: sschuberth

gerrit/count-active-projects.rb

@@ -0,0 +1,36 @@
+#!/usr/bin/env ruby
+
+require_relative '../bundle/bundler/setup'
+
+require 'gerry'
+require 'set'
+
+uri_str, age = ARGV
+if uri_str.nil? || age.nil?
+    script = File.basename(__FILE__)
+    puts <<EOT
+Usage     : #{script} <uri> <age>
+Example   : #{script} [user:password@]host[:port] 3mon
+
+Rationale : Count the number of owners whose change(s) have been merged
+            in the given age period backwards from now.
+EOT
+    exit(1)
+end
+
+uri_str = 'https://' + uri_str unless uri_str.start_with?('https://', 'http://')
+uri = URI.parse(uri_str)
+
+uri.user = ENV['USER'] || ENV['USERNAME'] if uri.user.nil?
+uri.password = ENV['GERRIT_HTTP_PASSWORD'] if uri.password.nil?
+
+Gerry::Client.default_options.update(verify: false)
+client = Gerry.new("#{uri.scheme}://#{uri.host}", uri.user, uri.password)
+
+projects = Set.new
+changes = client.changes(["q=status:merged+-age:#{age}"])
+changes.each do |change|
+    projects << change['project']
+end
+
+puts "Number of active projects in the last #{age}: #{projects.size}"