Change socket_path to gitaly_address

config/gitlab.yml.example

@@ -443,14 +443,10 @@ production: &base
 
   # Gitaly settings
   gitaly:
-    # The socket_path setting is optional and obsolete. When this is set
-    # GitLab assumes it can reach a Gitaly services via a Unix socket at
-    # this path. When this is commented out GitLab will not use Gitaly.
-    # 
-    # This setting is obsolete because we expect it to be moved under
-    # repositories/storages in GitLab 9.1.
-    #
-    # socket_path: tmp/sockets/private/gitaly.socket
+    # This setting controls whether GitLab uses Gitaly (new component
+    # introduced in 9.0). Eventually Gitaly use will become mandatory and
+    # this option will disappear.
+    enabled: false
 
   #
   # 4. Advanced settings
@@ -465,6 +461,7 @@ production: &base
     storages: # You must have at least a `default` storage path.
       default:
         path: /home/git/repositories/
+        gitaly_address: unix:/home/git/gitlab/tmp/sockets/private/gitaly.socket
 
   ## Backup settings
   backup:
@@ -577,6 +574,9 @@ test:
     storages:
       default:
         path: tmp/tests/repositories/
+        gitaly_address: unix:<%= Rails.root.join('tmp/sockets/private/gitaly.socket') %>
+  gitaly:
+    enabled: false
   backup:
     path: tmp/tests/backups
   gitlab_shell:

config/initializers/8_gitaly.rb

-# Make sure we initialize a Gitaly channel before Sidekiq starts multi-threaded execution.
-Gitlab.config.repositories.storages.each do |name, params|
-  Gitlab::GitalyClient.configure_channel(name, params['socket_path'])
+require 'uri'
+
+# Make sure we initialize our Gitaly channels before Sidekiq starts multi-threaded execution.
+if Gitlab.config.gitaly.enabled || Rails.env.test?
+  Gitlab.config.repositories.storages.each do |name, params|
+    address = params['gitaly_address']
+
+    unless address.present?
+      raise "storage #{name.inspect} is missing a gitaly_address"
+    end
+
+    unless URI(address).scheme == 'unix'
+      raise "Unsupported Gitaly address: #{address.inspect}"
+    end
+
+    Gitlab::GitalyClient.configure_channel(name, address)
+  end
 end

doc/install/installation.md

@@ -477,12 +477,12 @@ with setting up Gitaly until you upgrade to GitLab 9.1 or later.
     # Enable Gitaly in the init script
     echo 'gitaly_enabled=true' | sudo tee -a /etc/default/gitlab
 
-Next, edit `/home/git/gitlab/config/gitlab.yml` and make sure `socket_path` in
+Next, edit `/home/git/gitlab/config/gitlab.yml` and make sure `enabled: true` in
 the `gitaly:` section is uncommented.
 
     # <- gitlab.yml indentation starts here
       gitaly:
-        socket_path: tmp/sockets/private/gitaly.socket
+        enabled: true
 
 For more information about configuring Gitaly see
 [doc/administration/gitaly](../administration/gitaly).

lib/gitlab/gitaly_client.rb

@@ -4,9 +4,11 @@ module Gitlab
   module GitalyClient
     SERVER_VERSION_FILE = 'GITALY_SERVER_VERSION'.freeze
 
-    def self.configure_channel(shard, socket_path)
-      @channel ||= {}
-      @channel[shard] = new_channel("unix://#{socket_path}")
+    def self.configure_channel(storage, address)
+      @addresses ||= {}
+      @addresses[storage] = address
+      @channels ||= {}
+      @channels[storage] = new_channel(address)
     end
 
     def self.new_channel(address)
@@ -16,8 +18,12 @@ module Gitlab
       GRPC::Core::Channel.new(address, {}, :this_channel_is_insecure)
     end
 
-    def self.get_channel(shard)
-      @channel.fetch(shard)
+    def self.get_channel(storage)
+      @channels[storage]
+    end
+
+    def self.get_address(storage)
+      @addresses[storage]
     end
 
     def self.enabled?

lib/gitlab/workhorse.rb

 require 'base64'
 require 'json'
 require 'securerandom'
+require 'uri'
 
 module Gitlab
   class Workhorse
@@ -21,10 +22,10 @@ module Gitlab
           RepoPath: repository.path_to_repo,
         }
 
-        params.merge!(
-          GitalySocketPath: Gitlab.config.gitaly.socket_path,
-          GitalyResourcePath: "/projects/#{repository.project.id}/git-http/info-refs",
-        ) if Gitlab.config.gitaly.socket_path.present?
+        if Gitlab.config.gitaly.enabled
+          address = Gitlab::GitalyClient.get_address(repository.project.repository_storage)
+          params[:GitalySocketPath] = URI(address).path
+        end
 
         params
       end

spec/lib/gitlab/workhorse_spec.rb

@@ -184,18 +184,14 @@ describe Gitlab::Workhorse, lib: true do
 
     it { expect(subject).to eq({ GL_ID: "user-#{user.id}", RepoPath: repository.path_to_repo }) }
 
-    context 'when Gitaly socket path is present' do
-      let(:gitaly_socket_path) { '/tmp/gitaly.sock' }
-
+    context 'when Gitaly is enabled' do
       before do
-        allow(Gitlab.config.gitaly).to receive(:socket_path).and_return(gitaly_socket_path)
+        allow(Gitlab.config.gitaly).to receive(:enabled).and_return(true)
       end
 
       it 'includes Gitaly params in the returned value' do
-        expect(subject).to include({
-          GitalyResourcePath: "/projects/#{repository.project.id}/git-http/info-refs",
-          GitalySocketPath: gitaly_socket_path,
-        })
+        gitaly_socket_path = URI(Gitlab::GitalyClient.get_address('default')).path
+        expect(subject).to include({ GitalySocketPath: gitaly_socket_path })
       end
     end
   end

spec/requests/api/internal_spec.rb

@@ -424,7 +424,7 @@ describe API::Internal, api: true  do
     end
 
     before do
-      allow(Gitlab.config.gitaly).to receive(:socket_path).and_return('path/to/gitaly.socket')
+      allow(Gitlab.config.gitaly).to receive(:enabled).and_return(true)
     end
 
     it "calls the Gitaly client if it's enabled" do