Merge branch 'gitaly-tree-entries' into 'master'

Incorporate CommitService.GetTreeEntries Gitaly call

Closes gitaly#372

See merge request !12941

5 files changed, 108 insertions, 33 deletions

diff --git a/GITALY_SERVER_VERSION b/GITALY_SERVER_VERSION
index 21574090598..ca222b7cf39 100644
--- a/GITALY_SERVER_VERSION
+++ b/GITALY_SERVER_VERSION
@@ -1 +1 @@
-0.22.0
+0.23.0
diff --git a/lib/gitlab/git/tree.rb b/lib/gitlab/git/tree.rb
index 8122ff0e81f..8e959c57c7c 100644
--- a/lib/gitlab/git/tree.rb
+++ b/lib/gitlab/git/tree.rb
@@ -17,30 +17,13 @@ module Gitlab
         def where(repository, sha, path = nil)
           path = nil if path == '' || path == '/'
 
-          commit = repository.lookup(sha)
-          root_tree = commit.tree
-
-          tree = if path
-                   id = find_id_by_path(repository, root_tree.oid, path)
-                   if id
-                     repository.lookup(id)
-                   else
-                     []
-                   end
-                 else
-                   root_tree
-                 end
-
-          tree.map do |entry|
-            new(
-              id: entry[:oid],
-              root_id: root_tree.oid,
-              name: entry[:name],
-              type: entry[:type],
-              mode: entry[:filemode].to_s(8),
-              path: path ? File.join(path, entry[:name]) : entry[:name],
-              commit_id: sha
-            )
+          Gitlab::GitalyClient.migrate(:tree_entries) do |is_enabled|
+            if is_enabled
+              client = Gitlab::GitalyClient::CommitService.new(repository)
+              client.tree_entries(repository, sha, path)
+            else
+              tree_entries_from_rugged(repository, sha, path)
+            end
           end
         end
 
@@ -74,6 +57,34 @@ module Gitlab
             entry[:oid]
           end
         end
+
+        def tree_entries_from_rugged(repository, sha, path)
+          commit = repository.lookup(sha)
+          root_tree = commit.tree
+
+          tree = if path
+                   id = find_id_by_path(repository, root_tree.oid, path)
+                   if id
+                     repository.lookup(id)
+                   else
+                     []
+                   end
+                 else
+                   root_tree
+                 end
+
+          tree.map do |entry|
+            new(
+              id: entry[:oid],
+              root_id: root_tree.oid,
+              name: entry[:name],
+              type: entry[:type],
+              mode: entry[:filemode].to_s(8),
+              path: path ? File.join(path, entry[:name]) : entry[:name],
+              commit_id: sha
+            )
+          end
+        end
       end
 
       def initialize(options)
diff --git a/lib/gitlab/gitaly_client/commit_service.rb b/lib/gitlab/gitaly_client/commit_service.rb
index 5b3a7659b84..c6e52b530b3 100644
--- a/lib/gitlab/gitaly_client/commit_service.rb
+++ b/lib/gitlab/gitaly_client/commit_service.rb
@@ -60,6 +60,31 @@ module Gitlab
         entry
       end
 
+      def tree_entries(repository, revision, path)
+        request = Gitaly::GetTreeEntriesRequest.new(
+          repository: @gitaly_repo,
+          revision: revision,
+          path: path.presence || '.'
+        )
+
+        response = GitalyClient.call(@repository.storage, :commit_service, :get_tree_entries, request)
+
+        response.flat_map do |message|
+          message.entries.map do |gitaly_tree_entry|
+            entry_path = gitaly_tree_entry.path.dup
+            Gitlab::Git::Tree.new(
+              id: gitaly_tree_entry.oid,
+              root_id: gitaly_tree_entry.root_oid,
+              type: gitaly_tree_entry.type.downcase,
+              mode: gitaly_tree_entry.mode.to_s(8),
+              name: File.basename(entry_path),
+              path: entry_path,
+              commit_id: gitaly_tree_entry.commit_oid
+            )
+          end
+        end
+      end
+
       def commit_count(ref)
         request = Gitaly::CountCommitsRequest.new(
           repository: @gitaly_repo,
diff --git a/spec/lib/gitlab/git/tree_spec.rb b/spec/lib/gitlab/git/tree_spec.rb
index 4b76a43e6b5..98ddd3c3664 100644
--- a/spec/lib/gitlab/git/tree_spec.rb
+++ b/spec/lib/gitlab/git/tree_spec.rb
@@ -1,8 +1,9 @@
 require "spec_helper"
 
 describe Gitlab::Git::Tree, seed_helper: true do
+  let(:repository) { Gitlab::Git::Repository.new('default', TEST_REPO_PATH) }
+
   context :repo do
-    let(:repository) { Gitlab::Git::Repository.new('default', TEST_REPO_PATH) }
     let(:tree) { Gitlab::Git::Tree.where(repository, SeedRepo::Commit::ID) }
 
     it { expect(tree).to be_kind_of Array }
@@ -74,4 +75,24 @@ describe Gitlab::Git::Tree, seed_helper: true do
       it { expect(submodule.name).to eq('gitlab-shell') }
     end
   end
+
+  describe '#where' do
+    context 'with gitaly disabled' do
+      before do
+        allow(Gitlab::GitalyClient).to receive(:feature_enabled?).and_return(false)
+      end
+
+      it 'calls #tree_entries_from_rugged' do
+        expect(described_class).to receive(:tree_entries_from_rugged)
+
+        described_class.where(repository, SeedRepo::Commit::ID, '/')
+      end
+    end
+
+    it 'gets the tree entries from GitalyClient' do
+      expect_any_instance_of(Gitlab::GitalyClient::CommitService).to receive(:tree_entries)
+
+      described_class.where(repository, SeedRepo::Commit::ID, '/')
+    end
+  end
 end
diff --git a/spec/lib/gitlab/gitaly_client/commit_service_spec.rb b/spec/lib/gitlab/gitaly_client/commit_service_spec.rb
index b3b4a1e2218..0868c793a33 100644
--- a/spec/lib/gitlab/gitaly_client/commit_service_spec.rb
+++ b/spec/lib/gitlab/gitaly_client/commit_service_spec.rb
@@ -2,9 +2,13 @@ require 'spec_helper'
 
 describe Gitlab::GitalyClient::CommitService do
   let(:project) { create(:project, :repository) }
+  let(:storage_name) { project.repository_storage }
+  let(:relative_path) { project.path_with_namespace + '.git' }
   let(:repository) { project.repository }
   let(:repository_message) { repository.gitaly_repository }
-  let(:commit) { project.commit('913c66a37b4a45b9769037c55c2d238bd0942d2e') }
+  let(:revision) { '913c66a37b4a45b9769037c55c2d238bd0942d2e' }
+  let(:commit) { project.commit(revision) }
+  let(:client) { described_class.new(repository) }
 
   describe '#diff_from_parent' do
     context 'when a commit has a parent' do
@@ -20,7 +24,7 @@ describe Gitlab::GitalyClient::CommitService do
 
         expect_any_instance_of(Gitaly::DiffService::Stub).to receive(:commit_diff).with(request, kind_of(Hash))
 
-        described_class.new(repository).diff_from_parent(commit)
+        client.diff_from_parent(commit)
       end
     end
 
@@ -38,12 +42,12 @@ describe Gitlab::GitalyClient::CommitService do
 
         expect_any_instance_of(Gitaly::DiffService::Stub).to receive(:commit_diff).with(request, kind_of(Hash))
 
-        described_class.new(repository).diff_from_parent(initial_commit)
+        client.diff_from_parent(initial_commit)
       end
     end
 
     it 'returns a Gitlab::Git::DiffCollection' do
-      ret = described_class.new(repository).diff_from_parent(commit)
+      ret = client.diff_from_parent(commit)
 
       expect(ret).to be_kind_of(Gitlab::Git::DiffCollection)
     end
@@ -53,7 +57,7 @@ describe Gitlab::GitalyClient::CommitService do
 
       expect(Gitlab::Git::DiffCollection).to receive(:new).with(kind_of(Enumerable), options)
 
-      described_class.new(repository).diff_from_parent(commit, options)
+      client.diff_from_parent(commit, options)
     end
   end
 
@@ -68,7 +72,7 @@ describe Gitlab::GitalyClient::CommitService do
 
         expect_any_instance_of(Gitaly::DiffService::Stub).to receive(:commit_delta).with(request, kind_of(Hash)).and_return([])
 
-        described_class.new(repository).commit_deltas(commit)
+        client.commit_deltas(commit)
       end
     end
 
@@ -83,7 +87,7 @@ describe Gitlab::GitalyClient::CommitService do
 
         expect_any_instance_of(Gitaly::DiffService::Stub).to receive(:commit_delta).with(request, kind_of(Hash)).and_return([])
 
-        described_class.new(repository).commit_deltas(initial_commit)
+        client.commit_deltas(initial_commit)
       end
     end
   end
@@ -91,6 +95,7 @@ describe Gitlab::GitalyClient::CommitService do
   describe '#between' do
     let(:from) { 'master' }
     let(:to) { '4b825dc642cb6eb9a060e54bf8d69288fbee4904' }
+
     it 'sends an RPC request' do
       request = Gitaly::CommitsBetweenRequest.new(
         repository: repository_message, from: from, to: to
@@ -102,4 +107,17 @@ describe Gitlab::GitalyClient::CommitService do
       described_class.new(repository).between(from, to)
     end
   end
+
+  describe '#tree_entries' do
+    let(:path) { '/' }
+
+    it 'sends a get_tree_entries message' do
+      expect_any_instance_of(Gitaly::CommitService::Stub)
+        .to receive(:get_tree_entries)
+        .with(gitaly_request_with_path(storage_name, relative_path), kind_of(Hash))
+        .and_return([])
+
+      client.tree_entries(repository, revision, path)
+    end
+  end
 end