batch proxy document index adds into slices of 100 (DLC-1151)

lib/dcv/solr/document_adapter/active_fedora.rb

@@ -198,16 +198,19 @@ def proxies
       end
     end
 
-    def index_proxies(params = {softCommit: true})
+    def index_proxies(params = {softCommit: true}, conn = ::ActiveFedora::SolrService.instance.conn)
       if has_struct_metadata?
-        conn = ::ActiveFedora::SolrService.instance.conn
         # delete by query proxyIn_ssi: internal_uri
         conn.delete_by_query("proxyIn_ssi:#{RSolr.solr_escape(obj.internal_uri())}")
 
         # reindex proxies
-        proxy_docs = proxies.collect {|p| p.to_solr}
-        conn.add(proxy_docs, params: params)
-        proxy_docs
+        indexed_docs = []
+        proxies.each_slice(100) do |slice|
+          proxy_docs = slice.map(&:to_solr)
+          conn.add(proxy_docs, params: params)
+          indexed_docs.concat proxy_docs
+        end
+        indexed_docs
       else
         []
       end

spec/unit/dcv/solr/document_adapter/active_fedora/collection_spec.rb

@@ -69,10 +69,24 @@
 			end
 		end
 		describe '#proxies' do
-			it "produces proxy objects that respod to :to_solr from structMetadata" do
+			it "produces proxy objects that respond to :to_solr from structMetadata" do
 				expect(adapter.proxies.length).to be 7
 				expect(adapter.proxies.first).to respond_to(:to_solr)
 			end
 		end
+		describe '#index_proxies' do
+			let(:conn) { instance_double(RSolr::Client) }
+			before do
+				allow(conn).to receive(:add)
+			end
+			it "indexes proxy documents corresponding to structMetadata" do
+				expect(conn).to receive(:delete_by_query)
+				index_proxies = adapter.index_proxies({}, conn)
+				expect(index_proxies.length).to be 7
+				index_proxies.each do |proxy|
+					expect(proxy.keys).to include("id", "label_ssi", "proxyFor_ssi", "proxyIn_ssi", "type_ssim")
+				end
+			end
+		end
 	end
 end