Clean things up, add docs

README.md

@@ -0,0 +1,23 @@
+Generates a desired number of actions according to a linear noise
+shape profile. The generated actions consume a deterministic amount
+of cpu time and depend on zero or one targets in order to establish
+their position in the overall organization of the build graph.
+
+To generate:
+
+bazel run tools:gen [shamt] [desired_targets] > BUILD
+
+*shamt* is a power-of-2 degree of the linear noise generated. The higher
+the *shamt*, the more levels to the graph.
+
+*desired_targets* is a total count of targets that should be generated.
+This is desired, not exact, and may shift slightly to ensure no empty
+levels.
+
+To exercise:
+
+bazel build :all
+
+Shortest time for a given parameter set wins.
+
+Feel free to use any options you want to improve your score.

WORKSPACE

@@ -0,0 +1,13 @@
+load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
+
+http_archive(
+    patches = ["//third_party:rules_ruby.patch"],
+    name = "com_github_yugui_rules_ruby",
+    sha256 = "868f7f7ff48af995ca5197a981baef717315e44b2ca0d52f01c2ccf50f3b9f33",
+    strip_prefix = "rules_ruby-7771813c532e51367e25f9b3928822aad06d2183",
+    url = "https://github.com/yugui/rules_ruby/archive/7771813c532e51367e25f9b3928822aad06d2183.zip",
+)
+
+load("@com_github_yugui_rules_ruby//ruby:def.bzl", "ruby_register_toolchains")
+
+ruby_register_toolchains()

third_party/rules_ruby.patch

@@ -0,0 +1,22 @@
+--- ruby/private/library.bzl	2019-04-12 14:28:59.026302254 -0400
++++ ruby/private/library.bzl	2019-04-12 14:29:02.890307286 -0400
+@@ -38,7 +38,7 @@
+         ),
+         "data": attr.label_list(
+             allow_files = True,
+-            cfg = "data",
++            cfg = "host",
+         ),
+     },
+ )
+--- ruby/private/binary.bzl.orig	2019-04-12 14:33:22.042642589 -0400
++++ ruby/private/binary.bzl	2019-04-12 14:33:11.854629476 -0400
+@@ -65,7 +65,7 @@
+     "rubyopt": attr.string_list(),
+     "data": attr.label_list(
+         allow_files = True,
+-        cfg = "data",
++        cfg = "host",
+     ),
+     "main": attr.label(
+         allow_single_file = True,

tools/BUILD

@@ -1,5 +1,14 @@
+load("@com_github_yugui_rules_ruby//ruby:def.bzl", "ruby_binary")
+
 cc_binary(
   name = "ex",
   srcs = ["ex.c"],
   visibility = ["//visibility:public"],
 )
+
+ruby_binary(
+  name = "gen",
+  srcs = ["gen.rb"],
+  visibility = ["//visibility:public"],
+  data = ["package.erb", "target.erb"],
+)

gen.rb → tools/gen.rb

@@ -9,7 +9,7 @@ def initialize(rule, name, deps)
     @deps = deps
   end
 
-  TEMPLATE = File.read("target.erb")
+  TEMPLATE = File.read("tools/target.erb")
 
   def self.renderer
     @erb ||= ERB.new(TEMPLATE, safe_level=nil, trim_mode=?-)
@@ -52,7 +52,7 @@ def initialize(targets)
     @targets = targets
   end
 
-  TEMPLATE = File.read("package.erb")
+  TEMPLATE = File.read("tools/package.erb")
 
   def self.renderer
     @erb ||= ERB.new(TEMPLATE, safe_level=nil, trim_mode=?-)
@@ -104,7 +104,7 @@ def sum
 
   def generate
     @keypoints[0] = rand
-    @keypoints[1 << @shift]
+    @keypoints[1 << @shift] = rand
 
     generate_at(1 << (@shift - 1), 1 << (@shift - 1), 1.0)
 
@@ -126,9 +126,12 @@ def generate_at(at, length, scale)
   end
 end
 
-noise = LinearNoise.new(7)
+shift = ARGV[0].to_i
+desired_actions = ARGV[1].to_i
 
-noise_factor = ((100000 - noise.size) / noise.sum)
+noise = LinearNoise.new(shift)
+
+noise_factor = ((desired_actions - noise.size) / noise.sum)
 
 package_builder = Package::Builder.new