cloud-watch: drop AmazonWebServicesFormula

Formula/cloud-watch.rb

@@ -1,21 +1,34 @@
-class CloudWatch < AmazonWebServicesFormula
+class CloudWatch < Formula
   homepage "https://aws.amazon.com/developertools/2534"
   url "https://ec2-downloads.s3.amazonaws.com/CloudWatch-2010-08-01.zip"
   version "1.0.20.0"
   sha1 "c3f5b856b3ff8e1ae06d0ad5db5dd27c214c4881"
 
+  depends_on :java
+
+  def install
+    env = Language::Java.java_home_env
+    env.merge! :AWS_CLOUDWATCH_HOME => libexec, :SERVICE_HOME => libexec
+    rm Dir["bin/*.cmd"] # Remove Windows versions
+    libexec.install Dir["*"]
+    Pathname.glob("#{libexec}/bin/*") do |file|
+      next if file.directory?
+      basename = file.basename
+      next if basename.to_s == "service"
+      (bin/basename).write_env_script file, env
+    end
+  end
+
   def caveats
-    s = standard_instructions "AWS_CLOUDWATCH_HOME"
-    s += <<-EOS.undent
-      export SERVICE_HOME="$AWS_CLOUDWATCH_HOME"
+    <<-EOS.undent
+      Before you can use these tools you must export some variables to your $SHELL.
+        export AWS_ACCESS_KEY="<Your AWS Access ID>"
+        export AWS_SECRET_KEY="<Your AWS Secret Key>"
+        export AWS_CREDENTIAL_FILE="<Path to the credentials file>"
     EOS
-    s
   end
 
   test do
-    ENV["JAVA_HOME"] = `/usr/libexec/java_home`.chomp
-    ENV["AWS_CLOUDWATCH_HOME"] = libexec
-    ENV["SERVICE_HOME"] = libexec
     assert_match /w.x.y.z/, shell_output("#{bin}/mon-version")
   end
 end