HHVM-228: Support new readConcern level 'linearizable'

Author: derickr

mongodb.cpp

@@ -191,6 +191,7 @@ static class MongoDBExtension : public Extension {
 
 			Native::registerClassConstant<KindOfString>(s_MongoDriverReadConcern_className.get(), makeStaticString("LOCAL"), s_MongoDriverReadConcern_local.get());
 			Native::registerClassConstant<KindOfString>(s_MongoDriverReadConcern_className.get(), makeStaticString("MAJORITY"), s_MongoDriverReadConcern_majority.get());
+			Native::registerClassConstant<KindOfString>(s_MongoDriverReadConcern_className.get(), makeStaticString("LINEARIZABLE"), s_MongoDriverReadConcern_linearizable.get());
 
 			/* MongoDb\Driver\ReadPreference */
 			HHVM_MALIAS(MongoDB\\Driver\\ReadPreference, _setReadPreference, MongoDBDriverReadPreference, _setReadPreference);

src/MongoDB/Driver/ReadConcern.cpp

@@ -29,6 +29,7 @@ namespace HPHP {
 const StaticString s_MongoDriverReadConcern_className("MongoDB\\Driver\\ReadConcern");
 const StaticString s_MongoDriverReadConcern_local(MONGOC_READ_CONCERN_LEVEL_LOCAL);
 const StaticString s_MongoDriverReadConcern_majority(MONGOC_READ_CONCERN_LEVEL_MAJORITY);
+const StaticString s_MongoDriverReadConcern_linearizable(MONGOC_READ_CONCERN_LEVEL_LINEARIZABLE);
 Class* MongoDBDriverReadConcernData::s_class = nullptr;
 const StaticString MongoDBDriverReadConcernData::s_className("MongoDBDriverReadConcern");
 IMPLEMENT_GET_CLASS(MongoDBDriverReadConcernData);

src/MongoDB/Driver/ReadConcern.h

@@ -30,6 +30,7 @@ namespace HPHP {
 extern const StaticString s_MongoDriverReadConcern_className;
 extern const StaticString s_MongoDriverReadConcern_local;
 extern const StaticString s_MongoDriverReadConcern_majority;
+extern const StaticString s_MongoDriverReadConcern_linearizable;
 
 class MongoDBDriverReadConcernData
 {