Merge pull request #1004 from cloudfoundry/no-lsb-release

Don't use lsb_release to find platform

Author: pivotal-david-osullivan

lib/java_buildpack/repository/repository_index.rb

@@ -89,8 +89,8 @@ def platform
           "#{tokens[1].downcase}#{tokens[2]}"
         elsif `uname -s` =~ /Darwin/
           'mountainlion'
-        elsif !`which lsb_release 2> /dev/null`.empty?
-          `lsb_release -cs`.strip
+        elsif `cat /etc/os-release | grep '^ID=' | cut -d'=' -f 2` =~ /ubuntu/
+          `cat /etc/os-release | grep '^VERSION_CODENAME=' | cut -d'=' -f 2`.strip
         else
           raise 'Unable to determine platform'
         end

spec/java_buildpack/repository/repository_index_spec.rb

@@ -73,7 +73,8 @@
 
     allow_any_instance_of(described_class).to receive(:`).with('uname -s').and_return('Linux')
     allow_any_instance_of(described_class).to receive(:`).with('uname -m').and_return('x86_64')
-    allow_any_instance_of(described_class).to receive(:`).with('which lsb_release 2> /dev/null').and_return('')
+    allow_any_instance_of(described_class).to receive(:`)
+      .with("cat /etc/os-release | grep '^ID=' | cut -d'=' -f 2").and_return('')
     allow(redhat_release).to receive(:exist?).and_return(true)
     allow(redhat_release).to receive(:read).and_return('CentOS release 6.4 (Final)')
     allow(application_cache).to receive(:get).with('centos6/x86_64/test-uri/index.yml')
@@ -106,9 +107,10 @@
 
     allow_any_instance_of(described_class).to receive(:`).with('uname -s').and_return('Linux')
     allow_any_instance_of(described_class).to receive(:`).with('uname -m').and_return('x86_64')
-    allow_any_instance_of(described_class).to receive(:`).with('which lsb_release 2> /dev/null')
-                                                         .and_return('/usr/bin/lsb_release')
-    allow_any_instance_of(described_class).to receive(:`).with('lsb_release -cs').and_return('precise')
+    allow_any_instance_of(described_class).to receive(:`).with("cat /etc/os-release | grep '^ID=' | cut -d'=' -f 2")
+                                                         .and_return('ubuntu')
+    allow_any_instance_of(described_class).to receive(:`)
+      .with("cat /etc/os-release | grep '^VERSION_CODENAME=' | cut -d'=' -f 2").and_return('precise')
     allow(application_cache).to receive(:get).with('precise/x86_64/test-uri/index.yml')
                                              .and_yield(Pathname.new('spec/fixtures/test-index.yml').open)
 
@@ -124,7 +126,8 @@
 
     allow_any_instance_of(File).to receive(:exists?).with('/etc/redhat-release').and_return(false)
     allow_any_instance_of(described_class).to receive(:`).with('uname -s').and_return('Linux')
-    allow_any_instance_of(described_class).to receive(:`).with('which lsb_release 2> /dev/null').and_return('')
+    allow_any_instance_of(described_class).to receive(:`)
+      .with("cat /etc/os-release | grep '^ID=' | cut -d'=' -f 2").and_return('')
 
     expect { described_class.new('{platform}/{architecture}/test-uri') }
       .to raise_error('Unable to determine platform')