Stop using deprecated `path` field on Gitaly messages

This revealed an error in our configuration generation in
gitlab:gitaly:install rake task. The fix is included

doc/update/9.3-to-9.4.md

+# From 9.3 to 9.4
+
+Make sure you view this update guide from the tag (version) of GitLab you would
+like to install. In most cases this should be the highest numbered production
+tag (without rc in it). You can select the tag in the version dropdown at the
+top left corner of GitLab (below the menu bar).
+
+If the highest number stable branch is unclear please check the
+[GitLab Blog](https://about.gitlab.com/blog/archives.html) for installation
+guide links by version.
+
+### 1. Stop server
+
+```bash
+sudo service gitlab stop
+```
+
+### 2. Backup
+
+```bash
+cd /home/git/gitlab
+
+sudo -u git -H bundle exec rake gitlab:backup:create RAILS_ENV=production
+```
+
+### 3. Update Ruby
+
+NOTE: GitLab 9.0 and higher only support Ruby 2.3.x and dropped support for Ruby 2.1.x. Be
+sure to upgrade your interpreter if necessary.
+
+You can check which version you are running with `ruby -v`.
+
+Download and compile Ruby:
+
+```bash
+mkdir /tmp/ruby && cd /tmp/ruby
+curl --remote-name --progress https://cache.ruby-lang.org/pub/ruby/2.3/ruby-2.3.3.tar.gz
+echo '1014ee699071aa2ddd501907d18cbe15399c997d ruby-2.3.3.tar.gz' | shasum -c - && tar xzf ruby-2.3.3.tar.gz
+cd ruby-2.3.3
+./configure --disable-install-rdoc
+make
+sudo make install
+```
+
+Install Bundler:
+
+```bash
+sudo gem install bundler --no-ri --no-rdoc
+```
+
+### 4. Update Node
+
+GitLab now runs [webpack](http://webpack.js.org) to compile frontend assets and
+it has a minimum requirement of node v4.3.0.
+
+You can check which version you are running with `node -v`. If you are running
+a version older than `v4.3.0` you will need to update to a newer version.  You
+can find instructions to install from community maintained packages or compile
+from source at the nodejs.org website.
+
+<https://nodejs.org/en/download/>
+
+
+Since 8.17, GitLab requires the use of yarn `>= v0.17.0` to manage
+JavaScript dependencies.
+
+```bash
+curl --location https://yarnpkg.com/install.sh | bash -
+```
+
+More information can be found on the [yarn website](https://yarnpkg.com/en/docs/install).
+
+### 5. Update Go
+
+NOTE: GitLab 9.4 and higher only supports Go 1.8.3 and dropped support for Go 1.5.x through 1.7.x. Be
+sure to upgrade your installation if necessary
+
+You can check which version you are running with `go version`.
+
+Download and install Go:
+
+```bash
+# Remove former Go installation folder
+sudo rm -rf /usr/local/go
+
+curl --remote-name --progress https://storage.googleapis.com/golang/go1.8.3.linux-amd64.tar.gz
+echo '1862f4c3d3907e59b04a757cfda0ea7aa9ef39274af99a784f5be843c80c6772  go1.8.3.linux-amd64.tar.gz' | shasum -a256 -c - && \
+  sudo tar -C /usr/local -xzf go1.8.3.linux-amd64.tar.gz
+sudo ln -sf /usr/local/go/bin/{go,godoc,gofmt} /usr/local/bin/
+rm go1.8.3.linux-amd64.tar.gz
+```
+
+### 6. Get latest code
+
+```bash
+cd /home/git/gitlab
+
+sudo -u git -H git fetch --all
+sudo -u git -H git checkout -- db/schema.rb # local changes will be restored automatically
+```
+
+For GitLab Community Edition:
+
+```bash
+cd /home/git/gitlab
+
+sudo -u git -H git checkout 9-4-stable
+```
+
+OR
+
+For GitLab Enterprise Edition:
+
+```bash
+cd /home/git/gitlab
+
+sudo -u git -H git checkout 9-4-stable-ee
+```
+
+### 5. Update gitlab-shell
+
+```bash
+cd /home/git/gitlab-shell
+
+sudo -u git -H git fetch --all --tags
+sudo -u git -H git checkout v$(</home/git/gitlab/GITLAB_SHELL_VERSION)
+sudo -u git -H bin/compile
+```
+
+### 6. Update gitlab-workhorse
+
+Install and compile gitlab-workhorse. This requires
+[Go 1.8](https://golang.org/dl) which should already be on your system from
+GitLab 8.1. GitLab-Workhorse uses [GNU Make](https://www.gnu.org/software/make/).
+If you are not using Linux you may have to run `gmake` instead of
+`make` below.
+
+```bash
+cd /home/git/gitlab-workhorse
+
+sudo -u git -H git fetch --all --tags
+sudo -u git -H git checkout v$(</home/git/gitlab/GITLAB_WORKHORSE_VERSION)
+sudo -u git -H make
+```
+
+### 7. Update Gitaly
+
+If you have not yet set up Gitaly then follow [Gitaly section of the installation
+guide](../install/installation.md#install-gitaly).
+
+#### Check Gitaly configuration
+
+Due to a bug in the `rake gitlab:gitaly:install` script your Gitaly
+configuration file may contain syntax errors. The block name
+`[[storages]]`, which may occur more than once in your `config.toml`
+file, should be `[[storage]]` instead.
+
+```shell
+cd /home/git/gitaly
+sudo -u git -H editor config.toml
+```
+
+#### Compile Gitaly
+
+```shell
+cd /home/git/gitaly
+sudo -u git -H git fetch --all --tags
+sudo -u git -H git checkout v$(</home/git/gitlab/GITALY_SERVER_VERSION)
+sudo -u git -H make
+```
+
+### 10. Update configuration files
+
+#### New configuration options for `gitlab.yml`
+
+There might be configuration options available for [`gitlab.yml`][yaml]. View them with the command below and apply them manually to your current `gitlab.yml`:
+
+```sh
+cd /home/git/gitlab
+
+git diff origin/9-3-stable:config/gitlab.yml.example origin/9-4-stable:config/gitlab.yml.example
+```
+
+#### Nginx configuration
+
+Ensure you're still up-to-date with the latest NGINX configuration changes:
+
+```sh
+cd /home/git/gitlab
+
+# For HTTPS configurations
+git diff origin/9-3-stable:lib/support/nginx/gitlab-ssl origin/9-4-stable:lib/support/nginx/gitlab-ssl
+
+# For HTTP configurations
+git diff origin/9-3-stable:lib/support/nginx/gitlab origin/9-4-stable:lib/support/nginx/gitlab
+```
+
+If you are using Strict-Transport-Security in your installation to continue using it you must enable it in your Nginx
+configuration as GitLab application no longer handles setting it.
+
+If you are using Apache instead of NGINX please see the updated [Apache templates].
+Also note that because Apache does not support upstreams behind Unix sockets you
+will need to let gitlab-workhorse listen on a TCP port. You can do this
+via [/etc/default/gitlab].
+
+[Apache templates]: https://gitlab.com/gitlab-org/gitlab-recipes/tree/master/web-server/apache
+[/etc/default/gitlab]: https://gitlab.com/gitlab-org/gitlab-ce/blob/9-4-stable/lib/support/init.d/gitlab.default.example#L38
+
+#### SMTP configuration
+
+If you're installing from source and use SMTP to deliver mail, you will need to add the following line
+to config/initializers/smtp_settings.rb:
+
+```ruby
+ActionMailer::Base.delivery_method = :smtp
+```
+
+See [smtp_settings.rb.sample] as an example.
+
+[smtp_settings.rb.sample]: https://gitlab.com/gitlab-org/gitlab-ce/blob/9-3-stable/config/initializers/smtp_settings.rb.sample#L13
+
+#### Init script
+
+There might be new configuration options available for [`gitlab.default.example`][gl-example]. View them with the command below and apply them manually to your current `/etc/default/gitlab`:
+
+```sh
+cd /home/git/gitlab
+
+git diff origin/9-3-stable:lib/support/init.d/gitlab.default.example origin/9-4-stable:lib/support/init.d/gitlab.default.example
+```
+
+Ensure you're still up-to-date with the latest init script changes:
+
+```bash
+cd /home/git/gitlab
+
+sudo cp lib/support/init.d/gitlab /etc/init.d/gitlab
+```
+
+For Ubuntu 16.04.1 LTS:
+
+```bash
+sudo systemctl daemon-reload
+```
+
+### 11. Install libs, migrations, etc.
+
+```bash
+cd /home/git/gitlab
+
+# MySQL installations (note: the line below states '--without postgres')
+sudo -u git -H bundle install --without postgres development test --deployment
+
+# PostgreSQL installations (note: the line below states '--without mysql')
+sudo -u git -H bundle install --without mysql development test --deployment
+
+# Optional: clean up old gems
+sudo -u git -H bundle clean
+
+# Run database migrations
+sudo -u git -H bundle exec rake db:migrate RAILS_ENV=production
+
+# Update node dependencies and recompile assets
+sudo -u git -H bundle exec rake yarn:install gitlab:assets:clean gitlab:assets:compile RAILS_ENV=production NODE_ENV=production
+
+# Clean up cache
+sudo -u git -H bundle exec rake cache:clear RAILS_ENV=production
+```
+
+**MySQL installations**: Run through the `MySQL strings limits` and `Tables and data conversion to utf8mb4` [tasks](../install/database_mysql.md).
+
+### 12. Start application
+
+```bash
+sudo service gitlab start
+sudo service nginx restart
+```
+
+### 13. Check application status
+
+Check if GitLab and its environment are configured correctly:
+
+```bash
+cd /home/git/gitlab
+
+sudo -u git -H bundle exec rake gitlab:env:info RAILS_ENV=production
+```
+
+To make sure you didn't miss anything run a more thorough check:
+
+```bash
+cd /home/git/gitlab
+
+sudo -u git -H bundle exec rake gitlab:check RAILS_ENV=production
+```
+
+If all items are green, then congratulations, the upgrade is complete!
+
+## Things went south? Revert to previous version (9.3)
+
+### 1. Revert the code to the previous version
+
+Follow the [upgrade guide from 9.2 to 9.3](9.2-to-9.3.md), except for the
+database migration (the backup is already migrated to the previous version).
+
+### 2. Restore from the backup
+
+```bash
+cd /home/git/gitlab
+
+sudo -u git -H bundle exec rake gitlab:backup:restore RAILS_ENV=production
+```
+
+If you have more than one backup `*.tar` file(s) please add `BACKUP=timestamp_of_backup` to the command above.
+
+[yaml]: https://gitlab.com/gitlab-org/gitlab-ce/blob/9-4-stable/config/gitlab.yml.example
+[gl-example]: https://gitlab.com/gitlab-org/gitlab-ce/blob/9-4-stable/lib/support/init.d/gitlab.default.example

lib/gitlab/gitaly_client/util.rb

@@ -4,7 +4,6 @@ module Gitlab
       class << self
         def repository(repository_storage, relative_path)
           Gitaly::Repository.new(
-            path: File.join(Gitlab.config.repositories.storages[repository_storage]['path'], relative_path),
             storage_name: repository_storage,
             relative_path: relative_path
           )

lib/tasks/gitlab/gitaly.rake

@@ -30,11 +30,7 @@ namespace :gitlab do
       puts "# Gitaly storage configuration generated from #{Gitlab.config.source} on #{Time.current.to_s(:long)}"
       puts "# This is in TOML format suitable for use in Gitaly's config.toml file."
-      config = Gitlab.config.repositories.storages.map do |key, val|
-        { name: key, path: val['path'] }
-      end
-
-      puts TOML.dump(storage: config)
+      puts gitaly_configuration_toml
     end
     private
@@ -42,10 +38,10 @@ namespace :gitlab do
     # We cannot create config.toml files for all possible Gitaly configuations.
     # For instance, if Gitaly is running on another machine then it makes no
     # sense to write a config.toml file on the current machine. This method will
-    # only write a config.toml file in the most common and simplest case: the
-    # case where we have exactly one Gitaly process and we are sure it is
-    # running locally because it uses a Unix socket.
-    def create_gitaly_configuration
+    # only generate a configuration for the most common and simplest case: when
+    # we have exactly one Gitaly process and we are sure it is running locally
+    # because it uses a Unix socket.
+    def gitaly_configuration_toml
       storages = []
       address = nil
@@ -63,8 +59,12 @@ namespace :gitlab do
         storages << { name: key, path: val['path'] }
       end
+      TOML.dump(socket_path: address.sub(%r{\Aunix:}, ''), storage: storages)
+    end
+
+    def create_gitaly_configuration
       File.open("config.toml", "w") do |f|
-        f.puts TOML.dump(socket_path: address.sub(%r{\Aunix:}, ''), storages: storages)
+        f.puts gitaly_configuration_toml
       end
     rescue ArgumentError => e
       puts "Skipping config.toml generation:"

spec/lib/gitlab/gitaly_client/notifications_spec.rb

@@ -3,12 +3,13 @@ require 'spec_helper'
 describe Gitlab::GitalyClient::Notifications do
   describe '#post_receive' do
     let(:project) { create(:empty_project) }
-    let(:repo_path) { project.repository.path_to_repo }
+    let(:storage_name) { project.repository_storage }
+    let(:relative_path) { project.path_with_namespace + '.git' }
     subject { described_class.new(project.repository) }
     it 'sends a post_receive message' do
       expect_any_instance_of(Gitaly::Notifications::Stub).
-        to receive(:post_receive).with(gitaly_request_with_repo_path(repo_path))
+        to receive(:post_receive).with(gitaly_request_with_path(storage_name, relative_path))
       subject.post_receive
     end

spec/lib/gitlab/gitaly_client/ref_spec.rb

@@ -2,7 +2,8 @@ require 'spec_helper'
 describe Gitlab::GitalyClient::Ref do
   let(:project) { create(:empty_project) }
-  let(:repo_path) { project.repository.path_to_repo }
+  let(:storage_name) { project.repository_storage }
+  let(:relative_path) { project.path_with_namespace + '.git' }
   let(:client) { described_class.new(project.repository) }
   before do
@@ -19,7 +20,8 @@ describe Gitlab::GitalyClient::Ref do
   describe '#branch_names' do
     it 'sends a find_all_branch_names message' do
       expect_any_instance_of(Gitaly::Ref::Stub).
-        to receive(:find_all_branch_names).with(gitaly_request_with_repo_path(repo_path)).
+        to receive(:find_all_branch_names).
+          with(gitaly_request_with_path(storage_name, relative_path)).
           and_return([])
       client.branch_names
@@ -29,7 +31,8 @@ describe Gitlab::GitalyClient::Ref do
   describe '#tag_names' do
     it 'sends a find_all_tag_names message' do
       expect_any_instance_of(Gitaly::Ref::Stub).
-        to receive(:find_all_tag_names).with(gitaly_request_with_repo_path(repo_path)).
+        to receive(:find_all_tag_names).
+          with(gitaly_request_with_path(storage_name, relative_path)).
           and_return([])
       client.tag_names
@@ -39,7 +42,8 @@ describe Gitlab::GitalyClient::Ref do
   describe '#default_branch_name' do
     it 'sends a find_default_branch_name message' do
       expect_any_instance_of(Gitaly::Ref::Stub).
-        to receive(:find_default_branch_name).with(gitaly_request_with_repo_path(repo_path)).
+        to receive(:find_default_branch_name).
+          with(gitaly_request_with_path(storage_name, relative_path)).
         and_return(double(name: 'foo'))
       client.default_branch_name
@@ -49,7 +53,8 @@ describe Gitlab::GitalyClient::Ref do
   describe '#local_branches' do
     it 'sends a find_local_branches message' do
       expect_any_instance_of(Gitaly::Ref::Stub).
-        to receive(:find_local_branches).with(gitaly_request_with_repo_path(repo_path)).
+        to receive(:find_local_branches).
+          with(gitaly_request_with_path(storage_name, relative_path)).
           and_return([])
       client.local_branches

spec/lib/gitlab/workhorse_spec.rb

@@ -212,7 +212,7 @@ describe Gitlab::Workhorse, lib: true do
       it 'includes a Repository param' do
         repo_param = { Repository: {
-          path: repo_path,
+          path: '', # deprecated field; grpc automatically creates it anyway
           storage_name: 'default',
           relative_path: project.full_path + '.git'
         } }

spec/support/matchers/gitaly_matchers.rb

-RSpec::Matchers.define :gitaly_request_with_repo_path do |path|
-  match { |actual| actual.repository.path == path }
+RSpec::Matchers.define :gitaly_request_with_path do |storage_name, relative_path|
+  match do |actual|
+    repository = actual.repository
+
+    repository.storage_name == storage_name &&
+      repository.relative_path == relative_path
+  end
 end
 RSpec::Matchers.define :gitaly_request_with_params do |params|

spec/tasks/gitlab/backup_rake_spec.rb

@@ -241,6 +241,10 @@ describe 'gitlab:app namespace rake task' do
         project_a
         project_b
+        # Avoid asking gitaly about the root ref (which will fail beacuse of the
+        # mocked storages)
+        allow_any_instance_of(Repository).to receive(:empty_repo?).and_return(false)
+
         # We only need a backup of the repositories for this test
         ENV["SKIP"] = "db,uploads,builds,artifacts,lfs,registry"
         create_backup

spec/tasks/gitlab/gitaly_rake_spec.rb

@@ -79,8 +79,14 @@ describe 'gitlab:gitaly namespace rake task' do
   describe 'storage_config' do
     it 'prints storage configuration in a TOML format' do
       config = {
-        'default' => { 'path' => '/path/to/default' },
-        'nfs_01' => { 'path' => '/path/to/nfs_01' }
+        'default' => {
+          'path' => '/path/to/default',
+          'gitaly_address' => 'unix:/path/to/my.socket'
+        },
+        'nfs_01' => {
+          'path' => '/path/to/nfs_01',
+          'gitaly_address' => 'unix:/path/to/my.socket'
+        }
       }
       allow(Gitlab.config.repositories).to receive(:storages).and_return(config)
@@ -89,6 +95,7 @@ describe 'gitlab:gitaly namespace rake task' do
         expected_output = <<~TOML
           # Gitaly storage configuration generated from #{Gitlab.config.source} on #{Time.current.to_s(:long)}
           # This is in TOML format suitable for use in Gitaly's config.toml file.
+          socket_path = "/path/to/my.socket"
           [[storage]]
           name = "default"
           path = "/path/to/default"