A re-worked version of the performance testing framework.

utilities/LoadTesting/scripts/subscripts/test_result_file.rb

@@ -0,0 +1,102 @@
+#! /usr/bin/ruby
+
+=begin
+--------------------------------------------------------------------------------
+
+Parse a file of JMeter test results (*./jtl), summarize the times for each test,
+and make the summaries easily available.
+
+--------------------------------------------------------------------------------
+=end
+
+require "rexml/document"
+
+include REXML
+
+# ------------------------------------------------------------------------------------
+# TestResultSummary class
+# ------------------------------------------------------------------------------------
+
+class TestResultSummary
+  attr_reader :label
+  attr_reader :how_many
+  attr_reader :failures
+  attr_reader :min_time
+  attr_reader :max_time
+  attr_reader :avg_time
+  def addResult(result_element)
+    @how_many += 1
+    @failures += 1 unless result_element.attributes["s"] == "true"
+
+    time = result_element.attributes["t"].to_i
+    @total_time += time
+    @min_time = [@min_time, time].min
+    @max_time = [@max_time, time].max
+
+    @avg_time = @total_time / how_many
+  end
+
+  def initialize(result_element)
+    @label = result_element.attributes["lb"]
+    @how_many = 0
+    @failures = 0
+    @min_time = 100000000
+    @max_time = 0
+    @total_time = 0
+
+    addResult(result_element)
+  end
+end
+
+# ------------------------------------------------------------------------------------
+# TestResultFile class
+# ------------------------------------------------------------------------------------
+
+class TestResultFile
+  attr_reader :filename
+  attr_reader :timestamp
+  attr_reader :summaries
+  attr_reader :version
+  def parse_result_file()
+    @summaries = {}
+    @version = "_"
+
+    file = File.new( @file_path )
+    doc = Document.new file
+    XPath.each(doc, "/testResults/httpSample") do | result |
+      test_label = result.attributes["lb"]
+      if @summaries[test_label] == nil
+        @summaries[test_label] = TestResultSummary.new(result)
+      else
+        @summaries[test_label].addResult(result)
+      end
+    end
+    
+    XPath.each(doc, "version") do | version |
+      @version = version.attributes["name"]
+    end
+  end
+
+  def initialize(filename, source_directory)
+    raise("filename must not be nil") if filename == nil
+    raise("source_directory must not be nil") if source_directory == nil
+
+    @filename = filename
+    @source_directory = source_directory
+
+    if !File.directory?(@source_directory)
+      raise "Directory does not exist: '#{@source_directory}'."
+    end
+
+    @file_path = File.expand_path(filename + ".jtl", @source_directory)
+
+    if !File.file?(@file_path)
+      raise "File doesn't exist: '#{@file_path}'."
+    end
+
+    @timestamp = File.mtime(@file_path)
+
+    parse_result_file()
+  end
+end
+