Added round robin LB policy.

1 files changed, 51 insertions, 45 deletions

diff --git a/build.yaml b/build.yaml
index c01807878f..4b63231749 100644
--- a/build.yaml
+++ b/build.yaml
@@ -45,57 +45,58 @@ filegroups:
     src/core/channel/client_channel.h, src/core/channel/compress_filter.h, src/core/channel/connected_channel.h,
     src/core/channel/context.h, src/core/channel/http_client_filter.h, src/core/channel/http_server_filter.h,
     src/core/channel/noop_filter.h, src/core/client_config/client_config.h, src/core/client_config/connector.h,
-    src/core/client_config/lb_policies/pick_first.h, src/core/client_config/lb_policy.h,
-    src/core/client_config/lb_policy_factory.h, src/core/client_config/lb_policy_registry.h,
-    src/core/client_config/resolver.h, src/core/client_config/resolver_factory.h,
-    src/core/client_config/resolver_registry.h, src/core/client_config/resolvers/dns_resolver.h,
-    src/core/client_config/resolvers/sockaddr_resolver.h, src/core/client_config/subchannel.h,
-    src/core/client_config/subchannel_factory.h, src/core/client_config/subchannel_factory_decorators/add_channel_arg.h,
-    src/core/client_config/subchannel_factory_decorators/merge_channel_args.h, src/core/client_config/uri_parser.h,
-    src/core/compression/message_compress.h, src/core/debug/trace.h, src/core/httpcli/format_request.h,
-    src/core/httpcli/httpcli.h, src/core/httpcli/parser.h, src/core/iomgr/alarm.h,
-    src/core/iomgr/alarm_heap.h, src/core/iomgr/alarm_internal.h, src/core/iomgr/endpoint.h,
-    src/core/iomgr/endpoint_pair.h, src/core/iomgr/fd_posix.h, src/core/iomgr/iocp_windows.h,
-    src/core/iomgr/iomgr.h, src/core/iomgr/iomgr_internal.h, src/core/iomgr/iomgr_posix.h,
-    src/core/iomgr/pollset.h, src/core/iomgr/pollset_posix.h, src/core/iomgr/pollset_set.h,
-    src/core/iomgr/pollset_set_posix.h, src/core/iomgr/pollset_set_windows.h, src/core/iomgr/pollset_windows.h,
-    src/core/iomgr/resolve_address.h, src/core/iomgr/sockaddr.h, src/core/iomgr/sockaddr_posix.h,
-    src/core/iomgr/sockaddr_utils.h, src/core/iomgr/sockaddr_win32.h, src/core/iomgr/socket_utils_posix.h,
-    src/core/iomgr/socket_windows.h, src/core/iomgr/tcp_client.h, src/core/iomgr/tcp_posix.h,
-    src/core/iomgr/tcp_server.h, src/core/iomgr/tcp_windows.h, src/core/iomgr/time_averaged_stats.h,
-    src/core/iomgr/udp_server.h, src/core/iomgr/wakeup_fd_pipe.h, src/core/iomgr/wakeup_fd_posix.h,
-    src/core/json/json.h, src/core/json/json_common.h, src/core/json/json_reader.h,
-    src/core/json/json_writer.h, src/core/profiling/timers.h, src/core/statistics/census_interface.h,
-    src/core/statistics/census_rpc_stats.h, src/core/surface/byte_buffer_queue.h,
-    src/core/surface/call.h, src/core/surface/channel.h, src/core/surface/completion_queue.h,
-    src/core/surface/event_string.h, src/core/surface/init.h, src/core/surface/server.h,
-    src/core/surface/surface_trace.h, src/core/transport/chttp2/alpn.h, src/core/transport/chttp2/bin_encoder.h,
-    src/core/transport/chttp2/frame.h, src/core/transport/chttp2/frame_data.h, src/core/transport/chttp2/frame_goaway.h,
-    src/core/transport/chttp2/frame_ping.h, src/core/transport/chttp2/frame_rst_stream.h,
-    src/core/transport/chttp2/frame_settings.h, src/core/transport/chttp2/frame_window_update.h,
-    src/core/transport/chttp2/hpack_parser.h, src/core/transport/chttp2/hpack_table.h,
-    src/core/transport/chttp2/http2_errors.h, src/core/transport/chttp2/huffsyms.h,
-    src/core/transport/chttp2/incoming_metadata.h, src/core/transport/chttp2/internal.h,
-    src/core/transport/chttp2/status_conversion.h, src/core/transport/chttp2/stream_encoder.h,
-    src/core/transport/chttp2/stream_map.h, src/core/transport/chttp2/timeout_encoding.h,
-    src/core/transport/chttp2/varint.h, src/core/transport/chttp2_transport.h, src/core/transport/connectivity_state.h,
+    src/core/client_config/lb_policies/pick_first.h, src/core/client_config/lb_policies/round_robin.h,
+    src/core/client_config/lb_policy.h, src/core/client_config/lb_policy_factory.h,
+    src/core/client_config/lb_policy_registry.h, src/core/client_config/resolver.h,
+    src/core/client_config/resolver_factory.h, src/core/client_config/resolver_registry.h,
+    src/core/client_config/resolvers/dns_resolver.h, src/core/client_config/resolvers/sockaddr_resolver.h,
+    src/core/client_config/subchannel.h, src/core/client_config/subchannel_factory.h,
+    src/core/client_config/subchannel_factory_decorators/add_channel_arg.h, src/core/client_config/subchannel_factory_decorators/merge_channel_args.h,
+    src/core/client_config/uri_parser.h, src/core/compression/message_compress.h,
+    src/core/debug/trace.h, src/core/httpcli/format_request.h, src/core/httpcli/httpcli.h,
+    src/core/httpcli/parser.h, src/core/iomgr/alarm.h, src/core/iomgr/alarm_heap.h,
+    src/core/iomgr/alarm_internal.h, src/core/iomgr/endpoint.h, src/core/iomgr/endpoint_pair.h,
+    src/core/iomgr/fd_posix.h, src/core/iomgr/iocp_windows.h, src/core/iomgr/iomgr.h,
+    src/core/iomgr/iomgr_internal.h, src/core/iomgr/iomgr_posix.h, src/core/iomgr/pollset.h,
+    src/core/iomgr/pollset_posix.h, src/core/iomgr/pollset_set.h, src/core/iomgr/pollset_set_posix.h,
+    src/core/iomgr/pollset_set_windows.h, src/core/iomgr/pollset_windows.h, src/core/iomgr/resolve_address.h,
+    src/core/iomgr/sockaddr.h, src/core/iomgr/sockaddr_posix.h, src/core/iomgr/sockaddr_utils.h,
+    src/core/iomgr/sockaddr_win32.h, src/core/iomgr/socket_utils_posix.h, src/core/iomgr/socket_windows.h,
+    src/core/iomgr/tcp_client.h, src/core/iomgr/tcp_posix.h, src/core/iomgr/tcp_server.h,
+    src/core/iomgr/tcp_windows.h, src/core/iomgr/time_averaged_stats.h, src/core/iomgr/udp_server.h,
+    src/core/iomgr/wakeup_fd_pipe.h, src/core/iomgr/wakeup_fd_posix.h, src/core/json/json.h,
+    src/core/json/json_common.h, src/core/json/json_reader.h, src/core/json/json_writer.h,
+    src/core/profiling/timers.h, src/core/statistics/census_interface.h, src/core/statistics/census_rpc_stats.h,
+    src/core/surface/byte_buffer_queue.h, src/core/surface/call.h, src/core/surface/channel.h,
+    src/core/surface/completion_queue.h, src/core/surface/event_string.h, src/core/surface/init.h,
+    src/core/surface/server.h, src/core/surface/surface_trace.h, src/core/transport/chttp2/alpn.h,
+    src/core/transport/chttp2/bin_encoder.h, src/core/transport/chttp2/frame.h, src/core/transport/chttp2/frame_data.h,
+    src/core/transport/chttp2/frame_goaway.h, src/core/transport/chttp2/frame_ping.h,
+    src/core/transport/chttp2/frame_rst_stream.h, src/core/transport/chttp2/frame_settings.h,
+    src/core/transport/chttp2/frame_window_update.h, src/core/transport/chttp2/hpack_parser.h,
+    src/core/transport/chttp2/hpack_table.h, src/core/transport/chttp2/http2_errors.h,
+    src/core/transport/chttp2/huffsyms.h, src/core/transport/chttp2/incoming_metadata.h,
+    src/core/transport/chttp2/internal.h, src/core/transport/chttp2/status_conversion.h,
+    src/core/transport/chttp2/stream_encoder.h, src/core/transport/chttp2/stream_map.h,
+    src/core/transport/chttp2/timeout_encoding.h, src/core/transport/chttp2/varint.h,
+    src/core/transport/chttp2_transport.h, src/core/transport/connectivity_state.h,
     src/core/transport/metadata.h, src/core/transport/stream_op.h, src/core/transport/transport.h,
     src/core/transport/transport_impl.h]
   src: [src/core/census/grpc_context.c, src/core/census/grpc_filter.c, src/core/channel/channel_args.c,
     src/core/channel/channel_stack.c, src/core/channel/client_channel.c, src/core/channel/compress_filter.c,
     src/core/channel/connected_channel.c, src/core/channel/http_client_filter.c, src/core/channel/http_server_filter.c,
     src/core/channel/noop_filter.c, src/core/client_config/client_config.c, src/core/client_config/connector.c,
-    src/core/client_config/lb_policies/pick_first.c, src/core/client_config/lb_policy.c,
-    src/core/client_config/lb_policy_factory.c, src/core/client_config/lb_policy_registry.c,
-    src/core/client_config/resolver.c, src/core/client_config/resolver_factory.c,
-    src/core/client_config/resolver_registry.c, src/core/client_config/resolvers/dns_resolver.c,
-    src/core/client_config/resolvers/sockaddr_resolver.c, src/core/client_config/subchannel.c,
-    src/core/client_config/subchannel_factory.c, src/core/client_config/subchannel_factory_decorators/add_channel_arg.c,
-    src/core/client_config/subchannel_factory_decorators/merge_channel_args.c, src/core/client_config/uri_parser.c,
-    src/core/compression/algorithm.c, src/core/compression/message_compress.c, src/core/debug/trace.c,
-    src/core/httpcli/format_request.c, src/core/httpcli/httpcli.c, src/core/httpcli/parser.c,
-    src/core/iomgr/alarm.c, src/core/iomgr/alarm_heap.c, src/core/iomgr/endpoint.c,
-    src/core/iomgr/endpoint_pair_posix.c, src/core/iomgr/endpoint_pair_windows.c,
+    src/core/client_config/lb_policies/pick_first.c, src/core/client_config/lb_policies/round_robin.c,
+    src/core/client_config/lb_policy.c, src/core/client_config/lb_policy_factory.c,
+    src/core/client_config/lb_policy_registry.c, src/core/client_config/resolver.c,
+    src/core/client_config/resolver_factory.c, src/core/client_config/resolver_registry.c,
+    src/core/client_config/resolvers/dns_resolver.c, src/core/client_config/resolvers/sockaddr_resolver.c,
+    src/core/client_config/subchannel.c, src/core/client_config/subchannel_factory.c,
+    src/core/client_config/subchannel_factory_decorators/add_channel_arg.c, src/core/client_config/subchannel_factory_decorators/merge_channel_args.c,
+    src/core/client_config/uri_parser.c, src/core/compression/algorithm.c, src/core/compression/message_compress.c,
+    src/core/debug/trace.c, src/core/httpcli/format_request.c, src/core/httpcli/httpcli.c,
+    src/core/httpcli/parser.c, src/core/iomgr/alarm.c, src/core/iomgr/alarm_heap.c,
+    src/core/iomgr/endpoint.c, src/core/iomgr/endpoint_pair_posix.c, src/core/iomgr/endpoint_pair_windows.c,
     src/core/iomgr/fd_posix.c, src/core/iomgr/iocp_windows.c, src/core/iomgr/iomgr.c,
     src/core/iomgr/iomgr_posix.c, src/core/iomgr/iomgr_windows.c, src/core/iomgr/pollset_multipoller_with_epoll.c,
     src/core/iomgr/pollset_multipoller_with_poll_posix.c, src/core/iomgr/pollset_posix.c,
@@ -636,6 +637,11 @@ targets:
   language: c
   src: [test/core/surface/lame_client_test.c]
   deps: [grpc_test_util, grpc, gpr_test_util, gpr]
+- name: lb_policies_test
+  build: test
+  language: c
+  src: [test/core/client_config/lb_policies_test.c]
+  deps: [grpc_test_util, grpc, gpr_test_util, gpr]
 - name: low_level_ping_pong_benchmark
   build: benchmark
   language: c