Revert "Revert "Merge branch 'support-go-subpackages' into 'master'

This reverts commit 5a586f36

Revert "Revert "Merge branch 'support-go-subpackages' into 'master'
74d7de81 · Stan Hu · 30ab290b · 74d7de81 · 74d7de81 · 30ab290b
Commit 74d7de81 authored Mar 12, 2016 by Stan Hu
6 changed files
--- a/CHANGELOG
+++ b/CHANGELOG
 Please view this file on the master branch, on stable branches it's out of date.

 v 8.6.0 (unreleased)
+  - Support Golang subpackage fetching (Stan Hu)
  - Contributions to forked projects are included in calendar
  - Improve the formatting for the user page bio (Connor Shea)
  - Removed the default password from the initial admin account created during

--- a/app/controllers/projects_controller.rb
+++ b/app/controllers/projects_controller.rb
 class ProjectsController < ApplicationController
  include ExtractsPath

-  prepend_before_action :render_go_import, only: [:show]
  skip_before_action :authenticate_user!, only: [:show, :activity]
  before_action :project, except: [:new, :create]
  before_action :repository, except: [:new, :create]
@@ -242,16 +241,6 @@ class ProjectsController < ApplicationController
    end
  end

-  def render_go_import
-    return unless params["go-get"] == "1"
-
-    @namespace = params[:namespace_id]
-    @id = params[:project_id] || params[:id]
-    @id = @id.gsub(/\.git\Z/, "")
-
-    render "go_import", layout: false
-  end
-
  def repo_exists?
    project.repository_exists? && !project.empty_repo?
  end

--- a/app/views/projects/go_import.html.haml
+++ b/app/views/projects/go_import.html.haml
-!!! 5
-%html
-  %head
-    - web_url = [Gitlab.config.gitlab.url, @namespace, @id].join('/')
-    %meta{name: "go-import", content: "#{web_url.split('://')[1]} git #{web_url}.git"}
--- a/config/initializers/go_get.rb
+++ b/config/initializers/go_get.rb
+Rails.application.config.middleware.use(Gitlab::Middleware::Go)
--- a/lib/gitlab/middleware/go.rb
+++ b/lib/gitlab/middleware/go.rb
+# A dumb middleware that returns a Go HTML document if the go-get=1 query string
+# is used irrespective if the namespace/project exists
+module Gitlab
+  module Middleware
+    class Go
+      def initialize(app)
+        @app = app
+      end
+
+      def call(env)
+        request = Rack::Request.new(env)
+
+        if go_request?(request)
+          render_go_doc(request)
+        else
+          @app.call(env)
+        end
+      end
+
+      private
+
+      def render_go_doc(request)
+        body = go_body(request)
+        response = Rack::Response.new(body, 200, { 'Content-Type' => 'text/html' })
+        response.finish
+      end
+
+      def go_request?(request)
+        request["go-get"].to_i == 1 && request.env["PATH_INFO"].present?
+      end
+
+      def go_body(request)
+        base_url = Gitlab.config.gitlab.url
+        # Go subpackages may be in the form of namespace/project/path1/path2/../pathN
+        # We can just ignore the paths and leave the namespace/project
+        path_info = request.env["PATH_INFO"]
+        path_info.sub!(/^\//, '')
+        project_path = path_info.split('/').first(2).join('/')
+        request_url = URI.join(base_url, project_path)
+        domain_path = strip_url(request_url.to_s)
+
+        "<!DOCTYPE html><html><head><meta content='#{domain_path} git #{request_url}.git' name='go-import'></head></html>\n";
+      end
+
+      def strip_url(url)
+        url.gsub(/\Ahttps?:\/\//, '')
+      end
+    end
+  end
+end
--- a/spec/lib/gitlab/middleware/go_spec.rb
+++ b/spec/lib/gitlab/middleware/go_spec.rb
+require 'spec_helper'
+
+describe Gitlab::Middleware::Go, lib: true do
+  let(:app) { double(:app) }
+  let(:middleware) { described_class.new(app) }
+
+  describe '#call' do
+    describe 'when go-get=0' do
+      it 'skips go-import generation' do
+        env = { 'rack.input' => '',
+                'QUERY_STRING' => 'go-get=0' }
+        expect(app).to receive(:call).with(env).and_return('no-go')
+        middleware.call(env)
+      end
+    end
+
+    describe 'when go-get=1' do
+      it 'returns a document' do
+        env = { 'rack.input' => '',
+                'QUERY_STRING' => 'go-get=1',
+                'PATH_INFO' => '/group/project/path' }
+        resp = middleware.call(env)
+        expect(resp[0]).to eq(200)
+        expect(resp[1]['Content-Type']).to eq('text/html')
+        expected_body = "<!DOCTYPE html><html><head><meta content='localhost/group/project git http://localhost/group/project.git' name='go-import'></head></html>\n"
+        expect(resp[2].body).to eq([expected_body])
+      end
+    end
+  end
+end