Merge branch 'gitaly-mandatory-20180706-jv' into 'master'

Remove gitaly_list_commits_by_oid, gitaly_commit_deltas, gitaly_create_repository flags

Closes gitaly#593, gitaly#566, and gitaly#670

See merge request gitlab-org/gitlab-ce!20432

lib/gitlab/git/commit.rb

@@ -164,13 +164,8 @@ module Gitlab
         # relation to each other. The last 10 commits for a branch for example,
         # should go through .where
         def batch_by_oid(repo, oids)
-          repo.gitaly_migrate(:list_commits_by_oid,
-                              status: Gitlab::GitalyClient::MigrationStatus::OPT_OUT) do |is_enabled|
-            if is_enabled
-              repo.gitaly_commit_client.list_commits_by_oid(oids)
-            else
-              oids.map { |oid| find(repo, oid) }.compact
-            end
+          repo.wrapped_gitaly_errors do
+            repo.gitaly_commit_client.list_commits_by_oid(oids)
           end
         end
 
@@ -289,14 +284,7 @@ module Gitlab
 
       def deltas
         @deltas ||= begin
-          deltas = Gitlab::GitalyClient.migrate(:commit_deltas) do |is_enabled|
-            if is_enabled
-              @repository.gitaly_commit_client.commit_deltas(self)
-            else
-              rugged_diff_from_parent.each_delta
-            end
-          end
-
+          deltas = @repository.gitaly_commit_client.commit_deltas(self)
           deltas.map { |delta| Gitlab::Git::Diff.new(delta) }
         end
       end

lib/gitlab/git/repository.rb

@@ -1862,35 +1862,6 @@ module Gitlab
       def sha_from_ref(ref)
         rev_parse_target(ref).oid
       end
-
-      def build_git_cmd(*args)
-        object_directories = alternate_object_directories.join(File::PATH_SEPARATOR)
-
-        env = { 'PWD' => self.path }
-        env['GIT_ALTERNATE_OBJECT_DIRECTORIES'] = object_directories if object_directories.present?
-
-        [
-          env,
-          ::Gitlab.config.git.bin_path,
-          *args,
-          { chdir: self.path }
-        ]
-      end
-
-      def git_diff_cmd(old_rev, new_rev)
-        old_rev = old_rev == ::Gitlab::Git::BLANK_SHA ? ::Gitlab::Git::EMPTY_TREE_ID : old_rev
-
-        build_git_cmd('diff', old_rev, new_rev, '--raw')
-      end
-
-      def git_cat_file_cmd
-        format = '%(objectname) %(objectsize) %(rest)'
-        build_git_cmd('cat-file', "--batch-check=#{format}")
-      end
-
-      def format_git_cat_file_script
-        File.expand_path('../support/format-git-cat-file-input', __FILE__)
-      end
     end
   end
 end

lib/gitlab/git/support/format-git-cat-file-input

-#!/usr/bin/env ruby
-
-# This script formats the output of the `git diff <old_rev> <new_rev> --raw`
-# command so it can be processed by `git cat-file`
-
-# We need to convert this:
-# ":100644 100644 5f53439... 85bc2f9... R060\tfiles/js/commit.js.coffee\tfiles/js/commit.coffee"
-# To:
-# "85bc2f9 R\tfiles/js/commit.js.coffee\tfiles/js/commit.coffee"
-
-ARGF.each do |line|
-  _, _, old_blob_id, new_blob_id, rest = line.split(/\s/, 5)
-
-  old_blob_id.gsub!(/[^\h]/, '')
-  new_blob_id.gsub!(/[^\h]/, '')
-
-  # We can't pass '0000000...' to `git cat-file` given it will not return info about the deleted file
-  blob_id = new_blob_id =~ /\A0+\z/ ? old_blob_id : new_blob_id
-
-  $stdout.puts "#{blob_id} #{rest}"
-end

lib/gitlab/shell.rb

@@ -74,17 +74,10 @@ module Gitlab
       relative_path = name.dup
       relative_path << '.git' unless relative_path.end_with?('.git')
 
-      gitaly_migrate(:create_repository,
-                     status: Gitlab::GitalyClient::MigrationStatus::OPT_OUT) do |is_enabled|
-        if is_enabled
-          repository = Gitlab::Git::Repository.new(storage, relative_path, '')
-          repository.gitaly_repository_client.create_repository
-          true
-        else
-          repo_path = File.join(Gitlab.config.repositories.storages[storage].legacy_disk_path, relative_path)
-          Gitlab::Git::Repository.create(repo_path, bare: true, symlink_hooks_to: gitlab_shell_hooks_path)
-        end
-      end
+      repository = Gitlab::Git::Repository.new(storage, relative_path, '')
+      wrapped_gitaly_errors { repository.gitaly_repository_client.create_repository }
+
+      true
     rescue => err # Once the Rugged codes gets removes this can be improved
       Rails.logger.error("Failed to add repository #{storage}/#{name}: #{err}")
       false
@@ -448,7 +441,11 @@ module Gitlab
     end
 
     def gitaly_migrate(method, status: Gitlab::GitalyClient::MigrationStatus::OPT_IN, &block)
-      Gitlab::GitalyClient.migrate(method, status: status, &block)
+      wrapped_gitaly_errors { Gitlab::GitalyClient.migrate(method, status: status, &block) }
+    end
+
+    def wrapped_gitaly_errors
+      yield
     rescue GRPC::NotFound, GRPC::BadStatus => e
       # Old Popen code returns [Error, output] to the caller, so we
       # need to do the same here...