Postgresql cookbook not working for Oracle EL, make it possible.

recipes/database_postgresql.rb

@@ -7,8 +7,74 @@ postgresql = node['postgresql']
 gitlab = node['gitlab']
 # 5.Database
-include_recipe "postgresql::server"
-include_recipe "database::postgresql"
+begin
+  chef_gem "pg"
+rescue Gem::Installer::ExtensionBuildError => e
+  # Are we an omnibus install?
+  raise if RbConfig.ruby.scan(%r{(chef|opscode)}).empty?
+  # Still here, must be omnibus. Lets make this thing install!
+  Chef::Log.warn 'Failed to properly build pg gem. Forcing properly linking and retrying (omnibus fix)'
+  gem_dir = e.message.scan(%r{will remain installed in ([^ ]+)}).flatten.first
+  raise unless gem_dir
+  gem_name = File.basename(gem_dir)
+  ext_dir = File.join(gem_dir, 'ext')
+  gem_exec = File.join(File.dirname(RbConfig.ruby), 'gem')
+  new_content = <<-EOS
+require 'rbconfig'
+%w(
+configure_args
+LIBRUBYARG_SHARED
+LIBRUBYARG_STATIC
+LIBRUBYARG
+LDFLAGS
+).each do |key|
+RbConfig::CONFIG[key].gsub!(/-Wl[^ ]+( ?\\/[^ ]+)?/, '')
+RbConfig::MAKEFILE_CONFIG[key].gsub!(/-Wl[^ ]+( ?\\/[^ ]+)?/, '')
+end
+RbConfig::CONFIG['RPATHFLAG'] = ''
+RbConfig::MAKEFILE_CONFIG['RPATHFLAG'] = ''
+EOS
+  new_content << File.read(extconf_path = File.join(ext_dir, 'extconf.rb'))
+  File.open(extconf_path, 'w') do |file|
+    file.write(new_content)
+  end
+
+  lib_builder = execute 'generate pg gem Makefile' do
+    # [COOK-3490] pg gem install requires full path on RHEL
+    if node['platform_family'] == 'rhel'
+      command "#{RbConfig.ruby} extconf.rb --with-pg-config=/usr/pgsql-#{node['postgresql']['version']}/bin/pg_config"
+    else
+      command "#{RbConfig.ruby} extconf.rb"
+    end
+    cwd ext_dir
+    action :nothing
+  end
+  lib_builder.run_action(:run)
+
+  lib_maker = execute 'make pg gem lib' do
+    command 'make'
+    cwd ext_dir
+    action :nothing
+  end
+  lib_maker.run_action(:run)
+
+  lib_installer = execute 'install pg gem lib' do
+    command 'make install'
+    cwd ext_dir
+    action :nothing
+  end
+  lib_installer.run_action(:run)
+
+  spec_installer = execute 'install pg spec' do
+    command "#{gem_exec} spec ./cache/#{gem_name}.gem --ruby > ./specifications/#{gem_name}.gemspec"
+    cwd File.join(gem_dir, '..', '..')
+    action :nothing
+  end
+  spec_installer.run_action(:run)
+
+  Chef::Log.warn 'Installation of pg gem successful!'
+end
+
 postgresql_connection = {
   :host => postgresql['server_host'],