Added elasticsearch HEAD

Allow to install Elasticsearch from the source:

    $ brew install elasticsearch --HEAD

(You need a working Maven installation -- `brew install maven` to install it with Homebrew.)

Closes #16844.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>

1 files changed, 18 insertions, 0 deletions

diff --git a/Library/Formula/elasticsearch.rb b/Library/Formula/elasticsearch.rb
index 580fd016f..625ca0ff0 100644
--- a/Library/Formula/elasticsearch.rb
+++ b/Library/Formula/elasticsearch.rb
@@ -4,12 +4,22 @@ class Elasticsearch < Formula
   homepage 'http://www.elasticsearch.org'
   url 'http://download.elasticsearch.org/elasticsearch/elasticsearch/elasticsearch-0.20.2.tar.gz'
   sha1 '9bedb3638e4fc5a53e264aab3c5ff1a345f22bab'
+  head 'https://github.com/elasticsearch/elasticsearch.git'
+
+  depends_on 'maven' if build.head?
 
   def cluster_name
     "elasticsearch_#{ENV['USER']}"
   end
 
   def install
+    if build.head?
+      # Build the package from source
+      system "mvn clean package -DskipTests"
+      # Extract the package to the current directory
+      system "tar --strip 1 -xzf target/releases/elasticsearch-*.tar.gz"
+    end
+
     # Remove Windows files
     rm_f Dir["bin/*.bat"]
 
@@ -20,6 +30,14 @@ class Elasticsearch < Formula
     # Install everything else into package directory
     prefix.install Dir['*']
 
+    # Remove unnecessary files
+    rm_f Dir["#{prefix}/lib/sigar/*"]
+    if build.head?
+      rm_rf "#{prefix}/pom.xml"
+      rm_rf "#{prefix}/src/"
+      rm_rf "#{prefix}/target/"
+    end
+
     # Set up ElasticSearch for local development:
     inreplace "#{prefix}/config/elasticsearch.yml" do |s|
       # 1. Give the cluster a unique name