Return commits by author

First bit of roughing out the return of commits based on author.

app/models/repository.rb

@@ -139,6 +139,7 @@ class Repository
       repo: raw_repository,
       ref: ref,
       path: opts[:path],
+      author: opts[:author],
       follow: Array(opts[:path]).length == 1,
       limit: opts[:limit],
       offset: opts[:offset],

lib/gitlab/git/repository.rb

@@ -322,6 +322,7 @@ module Gitlab
           limit: 10,
           offset: 0,
           path: nil,
+          author: nil,
           follow: false,
           skip_merges: false,
           after: nil,

lib/gitlab/gitaly_client/commit_service.rb

@@ -324,6 +324,7 @@ module Gitlab
         request.after    = GitalyClient.timestamp(options[:after]) if options[:after]
         request.before   = GitalyClient.timestamp(options[:before]) if options[:before]
         request.revision = encode_binary(options[:ref]) if options[:ref]
+        request.author   = encode_binary(options[:author]) if options[:author]
         request.order    = options[:order].upcase.sub('DEFAULT', 'NONE') if options[:order].present?
 
         request.paths = encode_repeated(Array(options[:path])) if options[:path].present?

spec/lib/gitlab/gitaly_client/commit_service_spec.rb

@@ -306,5 +306,19 @@ describe Gitlab::GitalyClient::CommitService do
 
       client.find_commits(order: 'topo')
     end
+
+    it 'sends an RPC request with an author' do
+      request = Gitaly::FindCommitsRequest.new(
+        repository: repository_message,
+        disable_walk: true,
+        order: 'NONE',
+        author: "Billy Baggins <bilbo@shire.com>"
+      )
+
+      expect_any_instance_of(Gitaly::CommitService::Stub).to receive(:find_commits)
+        .with(request, kind_of(Hash)).and_return([])
+
+      client.find_commits(order: 'default', author: "Billy Baggins <bilbo@shire.com>")
+    end
   end
 end

spec/models/repository_spec.rb

@@ -320,6 +320,20 @@ describe Repository do
       end
     end
 
+    context "when 'author' is set" do
+      let(:commit) { repository.commits(nil, limit: 1).first }
+      let(:known_author) { "#{commit.author_name} <#{commit.author_email}>" }
+      let(:unknown_author) { "The Man With No Name <zapp@brannigan.com>" }
+
+      it "returns commits from that author" do
+        expect(repository.commits(nil, author: known_author, limit: 1).size).to be > 0
+      end
+
+      it "doesn't returns commits from an unknown author" do
+        expect(repository.commits(nil, author: unknown_author, limit: 1).size).to eq(0)
+      end
+    end
+
     context "when 'all' flag is set" do
       it 'returns every commit from the repository' do
         expect(repository.commits(nil, all: true, limit: 60).size).to eq(60)