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require 'erb'
require 'ostruct'
require 'fileutils'
require 'json'
class Benchmarker
include FileUtils
def initialize(target, size)
@target = target
@size = size
@micro_benchmarks = {}
@parsecount = 100
@evalcount = 100
end
def setup
require 'puppet'
require 'puppet/pops'
config = File.join(@target, 'puppet.conf')
Puppet.initialize_settings(['--config', config])
manifests = File.join('benchmarks', 'evaluations', 'manifests')
Dir.foreach(manifests) do |f|
if f =~ /^(.*)\.pp$/
@micro_benchmarks[$1] = File.read(File.join(manifests, f))
end
end
# Run / Evaluate the common puppet logic
@env = Puppet.lookup(:environments).get('benchmarking')
@node = Puppet::Node.new("testing", :environment => @env)
@parser = Puppet::Pops::Parser::EvaluatingParser.new
@compiler = Puppet::Parser::Compiler.new(@node)
@scope = @compiler.topscope
# Perform a portion of what a compile does (just enough to evaluate the site.pp logic)
@compiler.catalog.environment_instance = @compiler.environment
@compiler.send(:evaluate_main)
# Then pretend we are running as part of a compilation
Puppet.push_context(@compiler.context_overrides, "Benchmark masquerading as compiler configured context")
end
def run(args = {})
details = args[:detail] || 'all'
measurements = []
@micro_benchmarks.each do |name, source|
# skip if all but the wanted if a single benchmark is wanted
match = details.match(/#{name}(?:[\._\s](parse|eval))?$/)
next unless details == 'all' || match
# if name ends with .parse or .eval only do that part, else do both parts
ending = match ? match[1] : nil # parse, eval or nil ending
unless ending == 'eval'
measurements << Benchmark.measure("#{name} parse") do
1..@parsecount.times { @parser.parse_string(source, name) }
end
end
unless ending == 'parse'
model = @parser.parse_string(source, name)
measurements << Benchmark.measure("#{name} eval") do
1..@evalcount.times do
begin
# Run each in a local scope
scope_memo = @scope.ephemeral_level
@scope.new_ephemeral(true)
@parser.evaluate(@scope, model)
ensure
# Toss the created local scope
@scope.pop_ephemerals(scope_memo)
end
end
end
end
end
measurements
end
def generate
environment = File.join(@target, 'environments', 'benchmarking')
templates = File.join('benchmarks', 'evaluations')
mkdir_p(File.join(environment, 'modules'))
mkdir_p(File.join(environment, 'manifests'))
render(File.join(templates, 'site.pp.erb'),
File.join(environment, 'manifests', 'site.pp'),{})
render(File.join(templates, 'puppet.conf.erb'),
File.join(@target, 'puppet.conf'),
:location => @target)
# Generate one module with a 3x function and a 4x function (namespaces)
module_name = "module1"
module_base = File.join(environment, 'modules', module_name)
manifests = File.join(module_base, 'manifests')
mkdir_p(manifests)
functions_3x = File.join(module_base, 'lib', 'puppet', 'parser', 'functions')
functions_4x = File.join(module_base, 'lib', 'puppet', 'functions')
mkdir_p(functions_3x)
mkdir_p(functions_4x)
File.open(File.join(module_base, 'metadata.json'), 'w') do |f|
JSON.dump({
"types" => [],
"source" => "",
"author" => "Evaluations Benchmark",
"license" => "Apache 2.0",
"version" => "1.0.0",
"description" => "Evaluations Benchmark module 1",
"summary" => "Module with supporting logic for evaluations benchmark",
"dependencies" => [],
}, f)
end
render(File.join(templates, 'module', 'init.pp.erb'),
File.join(manifests, 'init.pp'),
:name => module_name)
render(File.join(templates, 'module', 'func3.rb.erb'),
File.join(functions_3x, 'func3.rb'),
:name => module_name)
# namespaced function
mkdir_p(File.join(functions_4x, module_name))
render(File.join(templates, 'module', 'module1_func4.rb.erb'),
File.join(functions_4x, module_name, 'func4.rb'),
:name => module_name)
# non namespaced
render(File.join(templates, 'module', 'func4.rb.erb'),
File.join(functions_4x, 'func4.rb'),
:name => module_name)
end
def render(erb_file, output_file, bindings)
site = ERB.new(File.read(erb_file))
File.open(output_file, 'w') do |fh|
fh.write(site.result(OpenStruct.new(bindings).instance_eval { binding }))
end
end
end
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