Merge pull request grpc#18096 from markdroth/lb_policy_api

Second attempt: LB policy picker API
sheenaqotj · Feb 22, 2019 · 5f00cfd · 5f00cfd
2 parents 8fd43c2 + 148ae20
commit 5f00cfd
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Showing 34 changed files with 2,162 additions and 3,146 deletions.
diff --git a/BUILD b/BUILD
@@ -1075,10 +1075,10 @@ grpc_cc_library(
         "src/core/ext/filters/client_channel/parse_address.cc",
         "src/core/ext/filters/client_channel/proxy_mapper.cc",
         "src/core/ext/filters/client_channel/proxy_mapper_registry.cc",
-        "src/core/ext/filters/client_channel/request_routing.cc",
         "src/core/ext/filters/client_channel/resolver.cc",
         "src/core/ext/filters/client_channel/resolver_registry.cc",
         "src/core/ext/filters/client_channel/resolver_result_parsing.cc",
+        "src/core/ext/filters/client_channel/resolving_lb_policy.cc",
         "src/core/ext/filters/client_channel/retry_throttle.cc",
         "src/core/ext/filters/client_channel/server_address.cc",
         "src/core/ext/filters/client_channel/subchannel.cc",
@@ -1101,11 +1101,11 @@ grpc_cc_library(
         "src/core/ext/filters/client_channel/parse_address.h",
         "src/core/ext/filters/client_channel/proxy_mapper.h",
         "src/core/ext/filters/client_channel/proxy_mapper_registry.h",
-        "src/core/ext/filters/client_channel/request_routing.h",
         "src/core/ext/filters/client_channel/resolver.h",
         "src/core/ext/filters/client_channel/resolver_factory.h",
         "src/core/ext/filters/client_channel/resolver_registry.h",
         "src/core/ext/filters/client_channel/resolver_result_parsing.h",
+        "src/core/ext/filters/client_channel/resolving_lb_policy.h",
         "src/core/ext/filters/client_channel/retry_throttle.h",
         "src/core/ext/filters/client_channel/server_address.h",
         "src/core/ext/filters/client_channel/subchannel.h",

diff --git a/CMakeLists.txt b/CMakeLists.txt
@@ -1239,10 +1239,10 @@ add_library(grpc
   src/core/ext/filters/client_channel/parse_address.cc
   src/core/ext/filters/client_channel/proxy_mapper.cc
   src/core/ext/filters/client_channel/proxy_mapper_registry.cc
-  src/core/ext/filters/client_channel/request_routing.cc
   src/core/ext/filters/client_channel/resolver.cc
   src/core/ext/filters/client_channel/resolver_registry.cc
   src/core/ext/filters/client_channel/resolver_result_parsing.cc
+  src/core/ext/filters/client_channel/resolving_lb_policy.cc
   src/core/ext/filters/client_channel/retry_throttle.cc
   src/core/ext/filters/client_channel/server_address.cc
   src/core/ext/filters/client_channel/subchannel.cc
@@ -1594,10 +1594,10 @@ add_library(grpc_cronet
   src/core/ext/filters/client_channel/parse_address.cc
   src/core/ext/filters/client_channel/proxy_mapper.cc
   src/core/ext/filters/client_channel/proxy_mapper_registry.cc
-  src/core/ext/filters/client_channel/request_routing.cc
   src/core/ext/filters/client_channel/resolver.cc
   src/core/ext/filters/client_channel/resolver_registry.cc
   src/core/ext/filters/client_channel/resolver_result_parsing.cc
+  src/core/ext/filters/client_channel/resolving_lb_policy.cc
   src/core/ext/filters/client_channel/retry_throttle.cc
   src/core/ext/filters/client_channel/server_address.cc
   src/core/ext/filters/client_channel/subchannel.cc
@@ -1972,10 +1972,10 @@ add_library(grpc_test_util
   src/core/ext/filters/client_channel/parse_address.cc
   src/core/ext/filters/client_channel/proxy_mapper.cc
   src/core/ext/filters/client_channel/proxy_mapper_registry.cc
-  src/core/ext/filters/client_channel/request_routing.cc
   src/core/ext/filters/client_channel/resolver.cc
   src/core/ext/filters/client_channel/resolver_registry.cc
   src/core/ext/filters/client_channel/resolver_result_parsing.cc
+  src/core/ext/filters/client_channel/resolving_lb_policy.cc
   src/core/ext/filters/client_channel/retry_throttle.cc
   src/core/ext/filters/client_channel/server_address.cc
   src/core/ext/filters/client_channel/subchannel.cc
@@ -2297,10 +2297,10 @@ add_library(grpc_test_util_unsecure
   src/core/ext/filters/client_channel/parse_address.cc
   src/core/ext/filters/client_channel/proxy_mapper.cc
   src/core/ext/filters/client_channel/proxy_mapper_registry.cc
-  src/core/ext/filters/client_channel/request_routing.cc
   src/core/ext/filters/client_channel/resolver.cc
   src/core/ext/filters/client_channel/resolver_registry.cc
   src/core/ext/filters/client_channel/resolver_result_parsing.cc
+  src/core/ext/filters/client_channel/resolving_lb_policy.cc
   src/core/ext/filters/client_channel/retry_throttle.cc
   src/core/ext/filters/client_channel/server_address.cc
   src/core/ext/filters/client_channel/subchannel.cc
@@ -2633,10 +2633,10 @@ add_library(grpc_unsecure
   src/core/ext/filters/client_channel/parse_address.cc
   src/core/ext/filters/client_channel/proxy_mapper.cc
   src/core/ext/filters/client_channel/proxy_mapper_registry.cc
-  src/core/ext/filters/client_channel/request_routing.cc
   src/core/ext/filters/client_channel/resolver.cc
   src/core/ext/filters/client_channel/resolver_registry.cc
   src/core/ext/filters/client_channel/resolver_result_parsing.cc
+  src/core/ext/filters/client_channel/resolving_lb_policy.cc
   src/core/ext/filters/client_channel/retry_throttle.cc
   src/core/ext/filters/client_channel/server_address.cc
   src/core/ext/filters/client_channel/subchannel.cc
@@ -3490,10 +3490,10 @@ add_library(grpc++_cronet
   src/core/ext/filters/client_channel/parse_address.cc
   src/core/ext/filters/client_channel/proxy_mapper.cc
   src/core/ext/filters/client_channel/proxy_mapper_registry.cc
-  src/core/ext/filters/client_channel/request_routing.cc
   src/core/ext/filters/client_channel/resolver.cc
   src/core/ext/filters/client_channel/resolver_registry.cc
   src/core/ext/filters/client_channel/resolver_result_parsing.cc
+  src/core/ext/filters/client_channel/resolving_lb_policy.cc
   src/core/ext/filters/client_channel/retry_throttle.cc
   src/core/ext/filters/client_channel/server_address.cc
   src/core/ext/filters/client_channel/subchannel.cc

diff --git a/Makefile b/Makefile
@@ -3758,10 +3758,10 @@ LIBGRPC_SRC = \
     src/core/ext/filters/client_channel/parse_address.cc \
     src/core/ext/filters/client_channel/proxy_mapper.cc \
     src/core/ext/filters/client_channel/proxy_mapper_registry.cc \
-    src/core/ext/filters/client_channel/request_routing.cc \
     src/core/ext/filters/client_channel/resolver.cc \
     src/core/ext/filters/client_channel/resolver_registry.cc \
     src/core/ext/filters/client_channel/resolver_result_parsing.cc \
+    src/core/ext/filters/client_channel/resolving_lb_policy.cc \
     src/core/ext/filters/client_channel/retry_throttle.cc \
     src/core/ext/filters/client_channel/server_address.cc \
     src/core/ext/filters/client_channel/subchannel.cc \
@@ -4107,10 +4107,10 @@ LIBGRPC_CRONET_SRC = \
     src/core/ext/filters/client_channel/parse_address.cc \
     src/core/ext/filters/client_channel/proxy_mapper.cc \
     src/core/ext/filters/client_channel/proxy_mapper_registry.cc \
-    src/core/ext/filters/client_channel/request_routing.cc \
     src/core/ext/filters/client_channel/resolver.cc \
     src/core/ext/filters/client_channel/resolver_registry.cc \
     src/core/ext/filters/client_channel/resolver_result_parsing.cc \
+    src/core/ext/filters/client_channel/resolving_lb_policy.cc \
     src/core/ext/filters/client_channel/retry_throttle.cc \
     src/core/ext/filters/client_channel/server_address.cc \
     src/core/ext/filters/client_channel/subchannel.cc \
@@ -4478,10 +4478,10 @@ LIBGRPC_TEST_UTIL_SRC = \
     src/core/ext/filters/client_channel/parse_address.cc \
     src/core/ext/filters/client_channel/proxy_mapper.cc \
     src/core/ext/filters/client_channel/proxy_mapper_registry.cc \
-    src/core/ext/filters/client_channel/request_routing.cc \
     src/core/ext/filters/client_channel/resolver.cc \
     src/core/ext/filters/client_channel/resolver_registry.cc \
     src/core/ext/filters/client_channel/resolver_result_parsing.cc \
+    src/core/ext/filters/client_channel/resolving_lb_policy.cc \
     src/core/ext/filters/client_channel/retry_throttle.cc \
     src/core/ext/filters/client_channel/server_address.cc \
     src/core/ext/filters/client_channel/subchannel.cc \
@@ -4790,10 +4790,10 @@ LIBGRPC_TEST_UTIL_UNSECURE_SRC = \
     src/core/ext/filters/client_channel/parse_address.cc \
     src/core/ext/filters/client_channel/proxy_mapper.cc \
     src/core/ext/filters/client_channel/proxy_mapper_registry.cc \
-    src/core/ext/filters/client_channel/request_routing.cc \
     src/core/ext/filters/client_channel/resolver.cc \
     src/core/ext/filters/client_channel/resolver_registry.cc \
     src/core/ext/filters/client_channel/resolver_result_parsing.cc \
+    src/core/ext/filters/client_channel/resolving_lb_policy.cc \
     src/core/ext/filters/client_channel/retry_throttle.cc \
     src/core/ext/filters/client_channel/server_address.cc \
     src/core/ext/filters/client_channel/subchannel.cc \
@@ -5100,10 +5100,10 @@ LIBGRPC_UNSECURE_SRC = \
     src/core/ext/filters/client_channel/parse_address.cc \
     src/core/ext/filters/client_channel/proxy_mapper.cc \
     src/core/ext/filters/client_channel/proxy_mapper_registry.cc \
-    src/core/ext/filters/client_channel/request_routing.cc \
     src/core/ext/filters/client_channel/resolver.cc \
     src/core/ext/filters/client_channel/resolver_registry.cc \
     src/core/ext/filters/client_channel/resolver_result_parsing.cc \
+    src/core/ext/filters/client_channel/resolving_lb_policy.cc \
     src/core/ext/filters/client_channel/retry_throttle.cc \
     src/core/ext/filters/client_channel/server_address.cc \
     src/core/ext/filters/client_channel/subchannel.cc \
@@ -5934,10 +5934,10 @@ LIBGRPC++_CRONET_SRC = \
     src/core/ext/filters/client_channel/parse_address.cc \
     src/core/ext/filters/client_channel/proxy_mapper.cc \
     src/core/ext/filters/client_channel/proxy_mapper_registry.cc \
-    src/core/ext/filters/client_channel/request_routing.cc \
     src/core/ext/filters/client_channel/resolver.cc \
     src/core/ext/filters/client_channel/resolver_registry.cc \
     src/core/ext/filters/client_channel/resolver_result_parsing.cc \
+    src/core/ext/filters/client_channel/resolving_lb_policy.cc \
     src/core/ext/filters/client_channel/retry_throttle.cc \
     src/core/ext/filters/client_channel/server_address.cc \
     src/core/ext/filters/client_channel/subchannel.cc \

diff --git a/build.yaml b/build.yaml
@@ -585,11 +585,11 @@ filegroups:
   - src/core/ext/filters/client_channel/parse_address.h
   - src/core/ext/filters/client_channel/proxy_mapper.h
   - src/core/ext/filters/client_channel/proxy_mapper_registry.h
-  - src/core/ext/filters/client_channel/request_routing.h
   - src/core/ext/filters/client_channel/resolver.h
   - src/core/ext/filters/client_channel/resolver_factory.h
   - src/core/ext/filters/client_channel/resolver_registry.h
   - src/core/ext/filters/client_channel/resolver_result_parsing.h
+  - src/core/ext/filters/client_channel/resolving_lb_policy.h
   - src/core/ext/filters/client_channel/retry_throttle.h
   - src/core/ext/filters/client_channel/server_address.h
   - src/core/ext/filters/client_channel/subchannel.h
@@ -612,10 +612,10 @@ filegroups:
   - src/core/ext/filters/client_channel/parse_address.cc
   - src/core/ext/filters/client_channel/proxy_mapper.cc
   - src/core/ext/filters/client_channel/proxy_mapper_registry.cc
-  - src/core/ext/filters/client_channel/request_routing.cc
   - src/core/ext/filters/client_channel/resolver.cc
   - src/core/ext/filters/client_channel/resolver_registry.cc
   - src/core/ext/filters/client_channel/resolver_result_parsing.cc
+  - src/core/ext/filters/client_channel/resolving_lb_policy.cc
   - src/core/ext/filters/client_channel/retry_throttle.cc
   - src/core/ext/filters/client_channel/server_address.cc
   - src/core/ext/filters/client_channel/subchannel.cc

diff --git a/config.m4 b/config.m4
@@ -355,10 +355,10 @@ if test "$PHP_GRPC" != "no"; then
     src/core/ext/filters/client_channel/parse_address.cc \
     src/core/ext/filters/client_channel/proxy_mapper.cc \
     src/core/ext/filters/client_channel/proxy_mapper_registry.cc \
-    src/core/ext/filters/client_channel/request_routing.cc \
     src/core/ext/filters/client_channel/resolver.cc \
     src/core/ext/filters/client_channel/resolver_registry.cc \
     src/core/ext/filters/client_channel/resolver_result_parsing.cc \
+    src/core/ext/filters/client_channel/resolving_lb_policy.cc \
     src/core/ext/filters/client_channel/retry_throttle.cc \
     src/core/ext/filters/client_channel/server_address.cc \
     src/core/ext/filters/client_channel/subchannel.cc \

diff --git a/config.w32 b/config.w32
@@ -330,10 +330,10 @@ if (PHP_GRPC != "no") {
     "src\\core\\ext\\filters\\client_channel\\parse_address.cc " +
     "src\\core\\ext\\filters\\client_channel\\proxy_mapper.cc " +
     "src\\core\\ext\\filters\\client_channel\\proxy_mapper_registry.cc " +
-    "src\\core\\ext\\filters\\client_channel\\request_routing.cc " +
     "src\\core\\ext\\filters\\client_channel\\resolver.cc " +
     "src\\core\\ext\\filters\\client_channel\\resolver_registry.cc " +
     "src\\core\\ext\\filters\\client_channel\\resolver_result_parsing.cc " +
+    "src\\core\\ext\\filters\\client_channel\\resolving_lb_policy.cc " +
     "src\\core\\ext\\filters\\client_channel\\retry_throttle.cc " +
     "src\\core\\ext\\filters\\client_channel\\server_address.cc " +
     "src\\core\\ext\\filters\\client_channel\\subchannel.cc " +

diff --git a/gRPC-C++.podspec b/gRPC-C++.podspec
@@ -358,11 +358,11 @@ Pod::Spec.new do |s|
                       'src/core/ext/filters/client_channel/parse_address.h',
                       'src/core/ext/filters/client_channel/proxy_mapper.h',
                       'src/core/ext/filters/client_channel/proxy_mapper_registry.h',
-                      'src/core/ext/filters/client_channel/request_routing.h',
                       'src/core/ext/filters/client_channel/resolver.h',
                       'src/core/ext/filters/client_channel/resolver_factory.h',
                       'src/core/ext/filters/client_channel/resolver_registry.h',
                       'src/core/ext/filters/client_channel/resolver_result_parsing.h',
+                      'src/core/ext/filters/client_channel/resolving_lb_policy.h',
                       'src/core/ext/filters/client_channel/retry_throttle.h',
                       'src/core/ext/filters/client_channel/server_address.h',
                       'src/core/ext/filters/client_channel/subchannel.h',

diff --git a/gRPC-Core.podspec b/gRPC-Core.podspec
@@ -352,11 +352,11 @@ Pod::Spec.new do |s|
                       'src/core/ext/filters/client_channel/parse_address.h',
                       'src/core/ext/filters/client_channel/proxy_mapper.h',
                       'src/core/ext/filters/client_channel/proxy_mapper_registry.h',
-                      'src/core/ext/filters/client_channel/request_routing.h',
                       'src/core/ext/filters/client_channel/resolver.h',
                       'src/core/ext/filters/client_channel/resolver_factory.h',
                       'src/core/ext/filters/client_channel/resolver_registry.h',
                       'src/core/ext/filters/client_channel/resolver_result_parsing.h',
+                      'src/core/ext/filters/client_channel/resolving_lb_policy.h',
                       'src/core/ext/filters/client_channel/retry_throttle.h',
                       'src/core/ext/filters/client_channel/server_address.h',
                       'src/core/ext/filters/client_channel/subchannel.h',
@@ -799,10 +799,10 @@ Pod::Spec.new do |s|
                       'src/core/ext/filters/client_channel/parse_address.cc',
                       'src/core/ext/filters/client_channel/proxy_mapper.cc',
                       'src/core/ext/filters/client_channel/proxy_mapper_registry.cc',
-                      'src/core/ext/filters/client_channel/request_routing.cc',
                       'src/core/ext/filters/client_channel/resolver.cc',
                       'src/core/ext/filters/client_channel/resolver_registry.cc',
                       'src/core/ext/filters/client_channel/resolver_result_parsing.cc',
+                      'src/core/ext/filters/client_channel/resolving_lb_policy.cc',
                       'src/core/ext/filters/client_channel/retry_throttle.cc',
                       'src/core/ext/filters/client_channel/server_address.cc',
                       'src/core/ext/filters/client_channel/subchannel.cc',
@@ -980,11 +980,11 @@ Pod::Spec.new do |s|
                               'src/core/ext/filters/client_channel/parse_address.h',
                               'src/core/ext/filters/client_channel/proxy_mapper.h',
                               'src/core/ext/filters/client_channel/proxy_mapper_registry.h',
-                              'src/core/ext/filters/client_channel/request_routing.h',
                               'src/core/ext/filters/client_channel/resolver.h',
                               'src/core/ext/filters/client_channel/resolver_factory.h',
                               'src/core/ext/filters/client_channel/resolver_registry.h',
                               'src/core/ext/filters/client_channel/resolver_result_parsing.h',
+                              'src/core/ext/filters/client_channel/resolving_lb_policy.h',
                               'src/core/ext/filters/client_channel/retry_throttle.h',
                               'src/core/ext/filters/client_channel/server_address.h',
                               'src/core/ext/filters/client_channel/subchannel.h',

diff --git a/grpc.gemspec b/grpc.gemspec
@@ -286,11 +286,11 @@ Gem::Specification.new do |s|
   s.files += %w( src/core/ext/filters/client_channel/parse_address.h )
   s.files += %w( src/core/ext/filters/client_channel/proxy_mapper.h )
   s.files += %w( src/core/ext/filters/client_channel/proxy_mapper_registry.h )
-  s.files += %w( src/core/ext/filters/client_channel/request_routing.h )
   s.files += %w( src/core/ext/filters/client_channel/resolver.h )
   s.files += %w( src/core/ext/filters/client_channel/resolver_factory.h )
   s.files += %w( src/core/ext/filters/client_channel/resolver_registry.h )
   s.files += %w( src/core/ext/filters/client_channel/resolver_result_parsing.h )
+  s.files += %w( src/core/ext/filters/client_channel/resolving_lb_policy.h )
   s.files += %w( src/core/ext/filters/client_channel/retry_throttle.h )
   s.files += %w( src/core/ext/filters/client_channel/server_address.h )
   s.files += %w( src/core/ext/filters/client_channel/subchannel.h )
@@ -736,10 +736,10 @@ Gem::Specification.new do |s|
   s.files += %w( src/core/ext/filters/client_channel/parse_address.cc )
   s.files += %w( src/core/ext/filters/client_channel/proxy_mapper.cc )
   s.files += %w( src/core/ext/filters/client_channel/proxy_mapper_registry.cc )
-  s.files += %w( src/core/ext/filters/client_channel/request_routing.cc )
   s.files += %w( src/core/ext/filters/client_channel/resolver.cc )
   s.files += %w( src/core/ext/filters/client_channel/resolver_registry.cc )
   s.files += %w( src/core/ext/filters/client_channel/resolver_result_parsing.cc )
+  s.files += %w( src/core/ext/filters/client_channel/resolving_lb_policy.cc )
   s.files += %w( src/core/ext/filters/client_channel/retry_throttle.cc )
   s.files += %w( src/core/ext/filters/client_channel/server_address.cc )
   s.files += %w( src/core/ext/filters/client_channel/subchannel.cc )