Renamed subchannel_factory to client_channel_factory.

Added the ability to create channels from client_channel_factory. This
will be used by the grpclb code to create the channels to communicate
with the LB servers.

BUILD

@@ -195,6 +195,7 @@ cc_library(
     "src/core/lib/channel/http_client_filter.h",
     "src/core/lib/channel/http_server_filter.h",
     "src/core/lib/channel/subchannel_call_holder.h",
+    "src/core/lib/client_config/client_channel_factory.h",
     "src/core/lib/client_config/client_config.h",
     "src/core/lib/client_config/connector.h",
     "src/core/lib/client_config/initial_connect_string.h",
@@ -210,7 +211,6 @@ cc_library(
     "src/core/lib/client_config/resolvers/dns_resolver.h",
     "src/core/lib/client_config/resolvers/sockaddr_resolver.h",
     "src/core/lib/client_config/subchannel.h",
-    "src/core/lib/client_config/subchannel_factory.h",
     "src/core/lib/client_config/subchannel_index.h",
     "src/core/lib/client_config/uri_parser.h",
     "src/core/lib/compression/algorithm_metadata.h",
@@ -339,6 +339,7 @@ cc_library(
     "src/core/lib/channel/http_client_filter.c",
     "src/core/lib/channel/http_server_filter.c",
     "src/core/lib/channel/subchannel_call_holder.c",
+    "src/core/lib/client_config/client_channel_factory.c",
     "src/core/lib/client_config/client_config.c",
     "src/core/lib/client_config/connector.c",
     "src/core/lib/client_config/default_initial_connect_string.c",
@@ -355,7 +356,6 @@ cc_library(
     "src/core/lib/client_config/resolvers/dns_resolver.c",
     "src/core/lib/client_config/resolvers/sockaddr_resolver.c",
     "src/core/lib/client_config/subchannel.c",
-    "src/core/lib/client_config/subchannel_factory.c",
     "src/core/lib/client_config/subchannel_index.c",
     "src/core/lib/client_config/uri_parser.c",
     "src/core/lib/compression/compression_algorithm.c",
@@ -566,6 +566,7 @@ cc_library(
     "src/core/lib/channel/http_client_filter.h",
     "src/core/lib/channel/http_server_filter.h",
     "src/core/lib/channel/subchannel_call_holder.h",
+    "src/core/lib/client_config/client_channel_factory.h",
     "src/core/lib/client_config/client_config.h",
     "src/core/lib/client_config/connector.h",
     "src/core/lib/client_config/initial_connect_string.h",
@@ -581,7 +582,6 @@ cc_library(
     "src/core/lib/client_config/resolvers/dns_resolver.h",
     "src/core/lib/client_config/resolvers/sockaddr_resolver.h",
     "src/core/lib/client_config/subchannel.h",
-    "src/core/lib/client_config/subchannel_factory.h",
     "src/core/lib/client_config/subchannel_index.h",
     "src/core/lib/client_config/uri_parser.h",
     "src/core/lib/compression/algorithm_metadata.h",
@@ -694,6 +694,7 @@ cc_library(
     "src/core/lib/channel/http_client_filter.c",
     "src/core/lib/channel/http_server_filter.c",
     "src/core/lib/channel/subchannel_call_holder.c",
+    "src/core/lib/client_config/client_channel_factory.c",
     "src/core/lib/client_config/client_config.c",
     "src/core/lib/client_config/connector.c",
     "src/core/lib/client_config/default_initial_connect_string.c",
@@ -710,7 +711,6 @@ cc_library(
     "src/core/lib/client_config/resolvers/dns_resolver.c",
     "src/core/lib/client_config/resolvers/sockaddr_resolver.c",
     "src/core/lib/client_config/subchannel.c",
-    "src/core/lib/client_config/subchannel_factory.c",
     "src/core/lib/client_config/subchannel_index.c",
     "src/core/lib/client_config/uri_parser.c",
     "src/core/lib/compression/compression_algorithm.c",
@@ -1404,6 +1404,7 @@ objc_library(
     "src/core/lib/channel/http_client_filter.c",
     "src/core/lib/channel/http_server_filter.c",
     "src/core/lib/channel/subchannel_call_holder.c",
+    "src/core/lib/client_config/client_channel_factory.c",
     "src/core/lib/client_config/client_config.c",
     "src/core/lib/client_config/connector.c",
     "src/core/lib/client_config/default_initial_connect_string.c",
@@ -1420,7 +1421,6 @@ objc_library(
     "src/core/lib/client_config/resolvers/dns_resolver.c",
     "src/core/lib/client_config/resolvers/sockaddr_resolver.c",
     "src/core/lib/client_config/subchannel.c",
-    "src/core/lib/client_config/subchannel_factory.c",
     "src/core/lib/client_config/subchannel_index.c",
     "src/core/lib/client_config/uri_parser.c",
     "src/core/lib/compression/compression_algorithm.c",
@@ -1573,6 +1573,7 @@ objc_library(
     "src/core/lib/channel/http_client_filter.h",
     "src/core/lib/channel/http_server_filter.h",
     "src/core/lib/channel/subchannel_call_holder.h",
+    "src/core/lib/client_config/client_channel_factory.h",
     "src/core/lib/client_config/client_config.h",
     "src/core/lib/client_config/connector.h",
     "src/core/lib/client_config/initial_connect_string.h",
@@ -1588,7 +1589,6 @@ objc_library(
     "src/core/lib/client_config/resolvers/dns_resolver.h",
     "src/core/lib/client_config/resolvers/sockaddr_resolver.h",
     "src/core/lib/client_config/subchannel.h",
-    "src/core/lib/client_config/subchannel_factory.h",
     "src/core/lib/client_config/subchannel_index.h",
     "src/core/lib/client_config/uri_parser.h",
     "src/core/lib/compression/algorithm_metadata.h",

Makefile

@@ -2477,6 +2477,7 @@ LIBGRPC_SRC = \
     src/core/lib/channel/http_client_filter.c \
     src/core/lib/channel/http_server_filter.c \
     src/core/lib/channel/subchannel_call_holder.c \
+    src/core/lib/client_config/client_channel_factory.c \
     src/core/lib/client_config/client_config.c \
     src/core/lib/client_config/connector.c \
     src/core/lib/client_config/default_initial_connect_string.c \
@@ -2493,7 +2494,6 @@ LIBGRPC_SRC = \
     src/core/lib/client_config/resolvers/dns_resolver.c \
     src/core/lib/client_config/resolvers/sockaddr_resolver.c \
     src/core/lib/client_config/subchannel.c \
-    src/core/lib/client_config/subchannel_factory.c \
     src/core/lib/client_config/subchannel_index.c \
     src/core/lib/client_config/uri_parser.c \
     src/core/lib/compression/compression_algorithm.c \
@@ -2836,6 +2836,7 @@ LIBGRPC_UNSECURE_SRC = \
     src/core/lib/channel/http_client_filter.c \
     src/core/lib/channel/http_server_filter.c \
     src/core/lib/channel/subchannel_call_holder.c \
+    src/core/lib/client_config/client_channel_factory.c \
     src/core/lib/client_config/client_config.c \
     src/core/lib/client_config/connector.c \
     src/core/lib/client_config/default_initial_connect_string.c \
@@ -2852,7 +2853,6 @@ LIBGRPC_UNSECURE_SRC = \
     src/core/lib/client_config/resolvers/dns_resolver.c \
     src/core/lib/client_config/resolvers/sockaddr_resolver.c \
     src/core/lib/client_config/subchannel.c \
-    src/core/lib/client_config/subchannel_factory.c \
     src/core/lib/client_config/subchannel_index.c \
     src/core/lib/client_config/uri_parser.c \
     src/core/lib/compression/compression_algorithm.c \

binding.gyp

@@ -601,6 +601,7 @@
         'src/core/lib/channel/http_client_filter.c',
         'src/core/lib/channel/http_server_filter.c',
         'src/core/lib/channel/subchannel_call_holder.c',
+        'src/core/lib/client_config/client_channel_factory.c',
         'src/core/lib/client_config/client_config.c',
         'src/core/lib/client_config/connector.c',
         'src/core/lib/client_config/default_initial_connect_string.c',
@@ -617,7 +618,6 @@
         'src/core/lib/client_config/resolvers/dns_resolver.c',
         'src/core/lib/client_config/resolvers/sockaddr_resolver.c',
         'src/core/lib/client_config/subchannel.c',
-        'src/core/lib/client_config/subchannel_factory.c',
         'src/core/lib/client_config/subchannel_index.c',
         'src/core/lib/client_config/uri_parser.c',
         'src/core/lib/compression/compression_algorithm.c',

build.yaml

@@ -259,6 +259,7 @@ filegroups:
   - src/core/lib/channel/http_client_filter.h
   - src/core/lib/channel/http_server_filter.h
   - src/core/lib/channel/subchannel_call_holder.h
+  - src/core/lib/client_config/client_channel_factory.h
   - src/core/lib/client_config/client_config.h
   - src/core/lib/client_config/connector.h
   - src/core/lib/client_config/initial_connect_string.h
@@ -274,7 +275,6 @@ filegroups:
   - src/core/lib/client_config/resolvers/dns_resolver.h
   - src/core/lib/client_config/resolvers/sockaddr_resolver.h
   - src/core/lib/client_config/subchannel.h
-  - src/core/lib/client_config/subchannel_factory.h
   - src/core/lib/client_config/subchannel_index.h
   - src/core/lib/client_config/uri_parser.h
   - src/core/lib/compression/algorithm_metadata.h
@@ -359,6 +359,7 @@ filegroups:
   - src/core/lib/channel/http_client_filter.c
   - src/core/lib/channel/http_server_filter.c
   - src/core/lib/channel/subchannel_call_holder.c
+  - src/core/lib/client_config/client_channel_factory.c
   - src/core/lib/client_config/client_config.c
   - src/core/lib/client_config/connector.c
   - src/core/lib/client_config/default_initial_connect_string.c
@@ -375,7 +376,6 @@ filegroups:
   - src/core/lib/client_config/resolvers/dns_resolver.c
   - src/core/lib/client_config/resolvers/sockaddr_resolver.c
   - src/core/lib/client_config/subchannel.c
-  - src/core/lib/client_config/subchannel_factory.c
   - src/core/lib/client_config/subchannel_index.c
   - src/core/lib/client_config/uri_parser.c
   - src/core/lib/compression/compression_algorithm.c

config.m4

@@ -123,6 +123,7 @@ if test "$PHP_GRPC" != "no"; then
     src/core/lib/channel/http_client_filter.c \
     src/core/lib/channel/http_server_filter.c \
     src/core/lib/channel/subchannel_call_holder.c \
+    src/core/lib/client_config/client_channel_factory.c \
     src/core/lib/client_config/client_config.c \
     src/core/lib/client_config/connector.c \
     src/core/lib/client_config/default_initial_connect_string.c \
@@ -139,7 +140,6 @@ if test "$PHP_GRPC" != "no"; then
     src/core/lib/client_config/resolvers/dns_resolver.c \
     src/core/lib/client_config/resolvers/sockaddr_resolver.c \
     src/core/lib/client_config/subchannel.c \
-    src/core/lib/client_config/subchannel_factory.c \
     src/core/lib/client_config/subchannel_index.c \
     src/core/lib/client_config/uri_parser.c \
     src/core/lib/compression/compression_algorithm.c \

gRPC.podspec

@@ -197,6 +197,7 @@ Pod::Spec.new do |s|
                       'src/core/lib/channel/http_client_filter.h',
                       'src/core/lib/channel/http_server_filter.h',
                       'src/core/lib/channel/subchannel_call_holder.h',
+                      'src/core/lib/client_config/client_channel_factory.h',
                       'src/core/lib/client_config/client_config.h',
                       'src/core/lib/client_config/connector.h',
                       'src/core/lib/client_config/initial_connect_string.h',
@@ -212,7 +213,6 @@ Pod::Spec.new do |s|
                       'src/core/lib/client_config/resolvers/dns_resolver.h',
                       'src/core/lib/client_config/resolvers/sockaddr_resolver.h',
                       'src/core/lib/client_config/subchannel.h',
-                      'src/core/lib/client_config/subchannel_factory.h',
                       'src/core/lib/client_config/subchannel_index.h',
                       'src/core/lib/client_config/uri_parser.h',
                       'src/core/lib/compression/algorithm_metadata.h',
@@ -358,6 +358,7 @@ Pod::Spec.new do |s|
                       'src/core/lib/channel/http_client_filter.c',
                       'src/core/lib/channel/http_server_filter.c',
                       'src/core/lib/channel/subchannel_call_holder.c',
+                      'src/core/lib/client_config/client_channel_factory.c',
                       'src/core/lib/client_config/client_config.c',
                       'src/core/lib/client_config/connector.c',
                       'src/core/lib/client_config/default_initial_connect_string.c',
@@ -374,7 +375,6 @@ Pod::Spec.new do |s|
                       'src/core/lib/client_config/resolvers/dns_resolver.c',
                       'src/core/lib/client_config/resolvers/sockaddr_resolver.c',
                       'src/core/lib/client_config/subchannel.c',
-                      'src/core/lib/client_config/subchannel_factory.c',
                       'src/core/lib/client_config/subchannel_index.c',
                       'src/core/lib/client_config/uri_parser.c',
                       'src/core/lib/compression/compression_algorithm.c',
@@ -528,6 +528,7 @@ Pod::Spec.new do |s|
                               'src/core/lib/channel/http_client_filter.h',
                               'src/core/lib/channel/http_server_filter.h',
                               'src/core/lib/channel/subchannel_call_holder.h',
+                              'src/core/lib/client_config/client_channel_factory.h',
                               'src/core/lib/client_config/client_config.h',
                               'src/core/lib/client_config/connector.h',
                               'src/core/lib/client_config/initial_connect_string.h',
@@ -543,7 +544,6 @@ Pod::Spec.new do |s|
                               'src/core/lib/client_config/resolvers/dns_resolver.h',
                               'src/core/lib/client_config/resolvers/sockaddr_resolver.h',
                               'src/core/lib/client_config/subchannel.h',
-                              'src/core/lib/client_config/subchannel_factory.h',
                               'src/core/lib/client_config/subchannel_index.h',
                               'src/core/lib/client_config/uri_parser.h',
                               'src/core/lib/compression/algorithm_metadata.h',

grpc.gemspec

@@ -193,6 +193,7 @@ Gem::Specification.new do |s|
   s.files += %w( src/core/lib/channel/http_client_filter.h )
   s.files += %w( src/core/lib/channel/http_server_filter.h )
   s.files += %w( src/core/lib/channel/subchannel_call_holder.h )
+  s.files += %w( src/core/lib/client_config/client_channel_factory.h )
   s.files += %w( src/core/lib/client_config/client_config.h )
   s.files += %w( src/core/lib/client_config/connector.h )
   s.files += %w( src/core/lib/client_config/initial_connect_string.h )
@@ -208,7 +209,6 @@ Gem::Specification.new do |s|
   s.files += %w( src/core/lib/client_config/resolvers/dns_resolver.h )
   s.files += %w( src/core/lib/client_config/resolvers/sockaddr_resolver.h )
   s.files += %w( src/core/lib/client_config/subchannel.h )
-  s.files += %w( src/core/lib/client_config/subchannel_factory.h )
   s.files += %w( src/core/lib/client_config/subchannel_index.h )
   s.files += %w( src/core/lib/client_config/uri_parser.h )
   s.files += %w( src/core/lib/compression/algorithm_metadata.h )
@@ -341,6 +341,7 @@ Gem::Specification.new do |s|
   s.files += %w( src/core/lib/channel/http_client_filter.c )
   s.files += %w( src/core/lib/channel/http_server_filter.c )
   s.files += %w( src/core/lib/channel/subchannel_call_holder.c )
+  s.files += %w( src/core/lib/client_config/client_channel_factory.c )
   s.files += %w( src/core/lib/client_config/client_config.c )
   s.files += %w( src/core/lib/client_config/connector.c )
   s.files += %w( src/core/lib/client_config/default_initial_connect_string.c )
@@ -357,7 +358,6 @@ Gem::Specification.new do |s|
   s.files += %w( src/core/lib/client_config/resolvers/dns_resolver.c )
   s.files += %w( src/core/lib/client_config/resolvers/sockaddr_resolver.c )
   s.files += %w( src/core/lib/client_config/subchannel.c )
-  s.files += %w( src/core/lib/client_config/subchannel_factory.c )
   s.files += %w( src/core/lib/client_config/subchannel_index.c )
   s.files += %w( src/core/lib/client_config/uri_parser.c )
   s.files += %w( src/core/lib/compression/compression_algorithm.c )

package.json

@@ -136,6 +136,7 @@
     "src/core/lib/channel/http_client_filter.h",
     "src/core/lib/channel/http_server_filter.h",
     "src/core/lib/channel/subchannel_call_holder.h",
+    "src/core/lib/client_config/client_channel_factory.h",
     "src/core/lib/client_config/client_config.h",
     "src/core/lib/client_config/connector.h",
     "src/core/lib/client_config/initial_connect_string.h",
@@ -151,7 +152,6 @@
     "src/core/lib/client_config/resolvers/dns_resolver.h",
     "src/core/lib/client_config/resolvers/sockaddr_resolver.h",
     "src/core/lib/client_config/subchannel.h",
-    "src/core/lib/client_config/subchannel_factory.h",
     "src/core/lib/client_config/subchannel_index.h",
     "src/core/lib/client_config/uri_parser.h",
     "src/core/lib/compression/algorithm_metadata.h",
@@ -284,6 +284,7 @@
     "src/core/lib/channel/http_client_filter.c",
     "src/core/lib/channel/http_server_filter.c",
     "src/core/lib/channel/subchannel_call_holder.c",
+    "src/core/lib/client_config/client_channel_factory.c",
     "src/core/lib/client_config/client_config.c",
     "src/core/lib/client_config/connector.c",
     "src/core/lib/client_config/default_initial_connect_string.c",
@@ -300,7 +301,6 @@
     "src/core/lib/client_config/resolvers/dns_resolver.c",
     "src/core/lib/client_config/resolvers/sockaddr_resolver.c",
     "src/core/lib/client_config/subchannel.c",
-    "src/core/lib/client_config/subchannel_factory.c",
     "src/core/lib/client_config/subchannel_index.c",
     "src/core/lib/client_config/uri_parser.c",
     "src/core/lib/compression/compression_algorithm.c",

package.xml

@@ -197,6 +197,7 @@
     <file baseinstalldir="/" name="src/core/lib/channel/http_client_filter.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/channel/http_server_filter.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/channel/subchannel_call_holder.h" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/client_config/client_channel_factory.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/client_config/client_config.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/client_config/connector.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/client_config/initial_connect_string.h" role="src" />
@@ -212,7 +213,6 @@
     <file baseinstalldir="/" name="src/core/lib/client_config/resolvers/dns_resolver.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/client_config/resolvers/sockaddr_resolver.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/client_config/subchannel.h" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/client_config/subchannel_factory.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/client_config/subchannel_index.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/client_config/uri_parser.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/compression/algorithm_metadata.h" role="src" />
@@ -345,6 +345,7 @@
     <file baseinstalldir="/" name="src/core/lib/channel/http_client_filter.c" role="src" />
     <file baseinstalldir="/" name="src/core/lib/channel/http_server_filter.c" role="src" />
     <file baseinstalldir="/" name="src/core/lib/channel/subchannel_call_holder.c" role="src" />
+    <file baseinstalldir="/" name="src/core/lib/client_config/client_channel_factory.c" role="src" />
     <file baseinstalldir="/" name="src/core/lib/client_config/client_config.c" role="src" />
     <file baseinstalldir="/" name="src/core/lib/client_config/connector.c" role="src" />
     <file baseinstalldir="/" name="src/core/lib/client_config/default_initial_connect_string.c" role="src" />
@@ -361,7 +362,6 @@
     <file baseinstalldir="/" name="src/core/lib/client_config/resolvers/dns_resolver.c" role="src" />
     <file baseinstalldir="/" name="src/core/lib/client_config/resolvers/sockaddr_resolver.c" role="src" />
     <file baseinstalldir="/" name="src/core/lib/client_config/subchannel.c" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/client_config/subchannel_factory.c" role="src" />
     <file baseinstalldir="/" name="src/core/lib/client_config/subchannel_index.c" role="src" />
     <file baseinstalldir="/" name="src/core/lib/client_config/uri_parser.c" role="src" />
     <file baseinstalldir="/" name="src/core/lib/compression/compression_algorithm.c" role="src" />

src/core/ext/transport/chttp2/client/insecure/channel_create.c

@@ -136,31 +136,35 @@ static const grpc_connector_vtable connector_vtable = {
     connector_ref, connector_unref, connector_shutdown, connector_connect};
 
 typedef struct {
-  grpc_subchannel_factory base;
+  grpc_client_channel_factory base;
   gpr_refcount refs;
   grpc_channel_args *merge_args;
   grpc_channel *master;
-} subchannel_factory;
+} client_channel_factory;
 
-static void subchannel_factory_ref(grpc_subchannel_factory *scf) {
-  subchannel_factory *f = (subchannel_factory *)scf;
+static void client_channel_factory_ref(
+    grpc_client_channel_factory *cc_factory) {
+  client_channel_factory *f = (client_channel_factory *)cc_factory;
   gpr_ref(&f->refs);
 }
 
-static void subchannel_factory_unref(grpc_exec_ctx *exec_ctx,
-                                     grpc_subchannel_factory *scf) {
-  subchannel_factory *f = (subchannel_factory *)scf;
+static void client_channel_factory_unref(
+    grpc_exec_ctx *exec_ctx, grpc_client_channel_factory *cc_factory) {
+  client_channel_factory *f = (client_channel_factory *)cc_factory;
   if (gpr_unref(&f->refs)) {
-    GRPC_CHANNEL_INTERNAL_UNREF(exec_ctx, f->master, "subchannel_factory");
+    if (f->master != NULL) {
+      GRPC_CHANNEL_INTERNAL_UNREF(exec_ctx, f->master,
+                                  "client_channel_factory");
+    }
     grpc_channel_args_destroy(f->merge_args);
     gpr_free(f);
   }
 }
 
-static grpc_subchannel *subchannel_factory_create_subchannel(
-    grpc_exec_ctx *exec_ctx, grpc_subchannel_factory *scf,
+static grpc_subchannel *client_channel_factory_create_subchannel(
+    grpc_exec_ctx *exec_ctx, grpc_client_channel_factory *cc_factory,
     grpc_subchannel_args *args) {
-  subchannel_factory *f = (subchannel_factory *)scf;
+  client_channel_factory *f = (client_channel_factory *)cc_factory;
   connector *c = gpr_malloc(sizeof(*c));
   grpc_channel_args *final_args =
       grpc_channel_args_merge(args->args, f->merge_args);
@@ -175,9 +179,32 @@ static grpc_subchannel *subchannel_factory_create_subchannel(
   return s;
 }
 
-static const grpc_subchannel_factory_vtable subchannel_factory_vtable = {
-    subchannel_factory_ref, subchannel_factory_unref,
-    subchannel_factory_create_subchannel};
+static grpc_channel *client_channel_factory_create_channel(
+    grpc_exec_ctx *exec_ctx, grpc_client_channel_factory *cc_factory,
+    const char *target, grpc_channel_args *args) {
+  client_channel_factory *f = (client_channel_factory *)cc_factory;
+  grpc_channel_args *final_args = grpc_channel_args_merge(args, f->merge_args);
+  grpc_channel *channel = grpc_channel_create(exec_ctx, target, final_args,
+                                              GRPC_CLIENT_CHANNEL, NULL);
+  grpc_channel_args_destroy(final_args);
+  grpc_resolver *resolver = grpc_resolver_create(target, &f->base);
+  if (!resolver) {
+    GRPC_CHANNEL_INTERNAL_UNREF(exec_ctx, channel,
+                                "client_channel_factory_create_channel");
+    return NULL;
+  }
+
+  grpc_client_channel_set_resolver(
+      exec_ctx, grpc_channel_get_channel_stack(channel), resolver);
+  GRPC_RESOLVER_UNREF(exec_ctx, resolver, "create_channel");
+
+  return channel;
+}
+
+static const grpc_client_channel_factory_vtable client_channel_factory_vtable =
+    {client_channel_factory_ref, client_channel_factory_unref,
+     client_channel_factory_create_subchannel,
+     client_channel_factory_create_channel};
 
 /* Create a client channel:
    Asynchronously: - resolve target
@@ -186,38 +213,27 @@ static const grpc_subchannel_factory_vtable subchannel_factory_vtable = {
 grpc_channel *grpc_insecure_channel_create(const char *target,
                                            const grpc_channel_args *args,
                                            void *reserved) {
-  grpc_channel *channel = NULL;
-  grpc_resolver *resolver;
-  subchannel_factory *f;
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   GRPC_API_TRACE(
       "grpc_insecure_channel_create(target=%p, args=%p, reserved=%p)", 3,
       (target, args, reserved));
   GPR_ASSERT(!reserved);
 
-  channel =
-      grpc_channel_create(&exec_ctx, target, args, GRPC_CLIENT_CHANNEL, NULL);
-
-  f = gpr_malloc(sizeof(*f));
-  f->base.vtable = &subchannel_factory_vtable;
+  client_channel_factory *f = gpr_malloc(sizeof(*f));
+  memset(f, 0, sizeof(*f));
+  f->base.vtable = &client_channel_factory_vtable;
   gpr_ref_init(&f->refs, 1);
   f->merge_args = grpc_channel_args_copy(args);
-  f->master = channel;
-  GRPC_CHANNEL_INTERNAL_REF(f->master, "subchannel_factory");
-  resolver = grpc_resolver_create(target, &f->base);
-  if (!resolver) {
-    GRPC_CHANNEL_INTERNAL_UNREF(&exec_ctx, f->master, "subchannel_factory");
-    grpc_subchannel_factory_unref(&exec_ctx, &f->base);
-    grpc_exec_ctx_finish(&exec_ctx);
-    return NULL;
-  }
 
-  grpc_client_channel_set_resolver(
-      &exec_ctx, grpc_channel_get_channel_stack(channel), resolver);
-  GRPC_RESOLVER_UNREF(&exec_ctx, resolver, "create");
-  grpc_subchannel_factory_unref(&exec_ctx, &f->base);
+  grpc_channel *channel =
+      client_channel_factory_create_channel(&exec_ctx, &f->base, target, NULL);
+  if (channel != NULL) {
+    f->master = channel;
+    GRPC_CHANNEL_INTERNAL_REF(f->master, "grpc_insecure_channel_create");
+  }
+  grpc_client_channel_factory_unref(&exec_ctx, &f->base);
 
   grpc_exec_ctx_finish(&exec_ctx);
 
-  return channel;
+  return channel; /* may be NULL */
 }

src/core/ext/transport/chttp2/client/secure/secure_channel_create.c

@@ -192,34 +192,38 @@ static const grpc_connector_vtable connector_vtable = {
     connector_ref, connector_unref, connector_shutdown, connector_connect};
 
 typedef struct {
-  grpc_subchannel_factory base;
+  grpc_client_channel_factory base;
   gpr_refcount refs;
   grpc_channel_args *merge_args;
   grpc_channel_security_connector *security_connector;
   grpc_channel *master;
-} subchannel_factory;
+} client_channel_factory;
 
-static void subchannel_factory_ref(grpc_subchannel_factory *scf) {
-  subchannel_factory *f = (subchannel_factory *)scf;
+static void client_channel_factory_ref(
+    grpc_client_channel_factory *cc_factory) {
+  client_channel_factory *f = (client_channel_factory *)cc_factory;
   gpr_ref(&f->refs);
 }
 
-static void subchannel_factory_unref(grpc_exec_ctx *exec_ctx,
-                                     grpc_subchannel_factory *scf) {
-  subchannel_factory *f = (subchannel_factory *)scf;
+static void client_channel_factory_unref(
+    grpc_exec_ctx *exec_ctx, grpc_client_channel_factory *cc_factory) {
+  client_channel_factory *f = (client_channel_factory *)cc_factory;
   if (gpr_unref(&f->refs)) {
     GRPC_SECURITY_CONNECTOR_UNREF(&f->security_connector->base,
-                                  "subchannel_factory");
-    GRPC_CHANNEL_INTERNAL_UNREF(exec_ctx, f->master, "subchannel_factory");
+                                  "client_channel_factory");
+    if (f->master != NULL) {
+      GRPC_CHANNEL_INTERNAL_UNREF(exec_ctx, f->master,
+                                  "client_channel_factory");
+    }
     grpc_channel_args_destroy(f->merge_args);
     gpr_free(f);
   }
 }
 
-static grpc_subchannel *subchannel_factory_create_subchannel(
-    grpc_exec_ctx *exec_ctx, grpc_subchannel_factory *scf,
+static grpc_subchannel *client_channel_factory_create_subchannel(
+    grpc_exec_ctx *exec_ctx, grpc_client_channel_factory *cc_factory,
     grpc_subchannel_args *args) {
-  subchannel_factory *f = (subchannel_factory *)scf;
+  client_channel_factory *f = (client_channel_factory *)cc_factory;
   connector *c = gpr_malloc(sizeof(*c));
   grpc_channel_args *final_args =
       grpc_channel_args_merge(args->args, f->merge_args);
@@ -236,9 +240,36 @@ static grpc_subchannel *subchannel_factory_create_subchannel(
   return s;
 }
 
-static const grpc_subchannel_factory_vtable subchannel_factory_vtable = {
-    subchannel_factory_ref, subchannel_factory_unref,
-    subchannel_factory_create_subchannel};
+static grpc_channel *client_channel_factory_create_channel(
+    grpc_exec_ctx *exec_ctx, grpc_client_channel_factory *cc_factory,
+    const char *target, grpc_channel_args *args) {
+  client_channel_factory *f = (client_channel_factory *)cc_factory;
+
+  grpc_channel_args *final_args = grpc_channel_args_merge(args, f->merge_args);
+  grpc_channel *channel = grpc_channel_create(exec_ctx, target, final_args,
+                                              GRPC_CLIENT_CHANNEL, NULL);
+  grpc_channel_args_destroy(final_args);
+
+  grpc_resolver *resolver = grpc_resolver_create(target, &f->base);
+  if (resolver != NULL) {
+    grpc_client_channel_set_resolver(
+        exec_ctx, grpc_channel_get_channel_stack(channel), resolver);
+    GRPC_RESOLVER_UNREF(exec_ctx, resolver, "create");
+  } else {
+    GRPC_CHANNEL_INTERNAL_UNREF(exec_ctx, channel,
+                                "client_channel_factory_create_channel");
+    channel = NULL;
+  }
+
+  GRPC_SECURITY_CONNECTOR_UNREF(&f->security_connector->base,
+                                "client_channel_factory_create_channel");
+  return channel;
+}
+
+static const grpc_client_channel_factory_vtable client_channel_factory_vtable =
+    {client_channel_factory_ref, client_channel_factory_unref,
+     client_channel_factory_create_subchannel,
+     client_channel_factory_create_channel};
 
 /* Create a secure client channel:
    Asynchronously: - resolve target
@@ -248,13 +279,11 @@ grpc_channel *grpc_secure_channel_create(grpc_channel_credentials *creds,
                                          const char *target,
                                          const grpc_channel_args *args,
                                          void *reserved) {
-  grpc_channel *channel;
   grpc_arg connector_arg;
   grpc_channel_args *args_copy;
   grpc_channel_args *new_args_from_connector;
   grpc_channel_security_connector *security_connector;
-  grpc_resolver *resolver;
-  subchannel_factory *f;
+  client_channel_factory *f;
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
 
   GRPC_API_TRACE(
@@ -284,35 +313,30 @@ grpc_channel *grpc_secure_channel_create(grpc_channel_credentials *creds,
       new_args_from_connector != NULL ? new_args_from_connector : args,
       &connector_arg, 1);
 
-  channel = grpc_channel_create(&exec_ctx, target, args_copy,
-                                GRPC_CLIENT_CHANNEL, NULL);
-
   f = gpr_malloc(sizeof(*f));
-  f->base.vtable = &subchannel_factory_vtable;
+  memset(f, 0, sizeof(*f));
+  f->base.vtable = &client_channel_factory_vtable;
   gpr_ref_init(&f->refs, 1);
-  GRPC_SECURITY_CONNECTOR_REF(&security_connector->base, "subchannel_factory");
-  f->security_connector = security_connector;
+
   f->merge_args = grpc_channel_args_copy(args_copy);
-  f->master = channel;
-  GRPC_CHANNEL_INTERNAL_REF(channel, "subchannel_factory");
-  resolver = grpc_resolver_create(target, &f->base);
-  if (resolver) {
-    grpc_client_channel_set_resolver(
-        &exec_ctx, grpc_channel_get_channel_stack(channel), resolver);
-    GRPC_RESOLVER_UNREF(&exec_ctx, resolver, "create");
-  }
-  grpc_subchannel_factory_unref(&exec_ctx, &f->base);
-  GRPC_SECURITY_CONNECTOR_UNREF(&security_connector->base, "channel_create");
   grpc_channel_args_destroy(args_copy);
   if (new_args_from_connector != NULL) {
     grpc_channel_args_destroy(new_args_from_connector);
   }
 
-  if (!resolver) {
-    GRPC_CHANNEL_INTERNAL_UNREF(&exec_ctx, channel, "subchannel_factory");
-    channel = NULL;
+  GRPC_SECURITY_CONNECTOR_REF(&security_connector->base,
+                              "grpc_secure_channel_create");
+  f->security_connector = security_connector;
+
+  grpc_channel *channel =
+      client_channel_factory_create_channel(&exec_ctx, &f->base, target, NULL);
+  if (channel != NULL) {
+    f->master = channel;
+    GRPC_CHANNEL_INTERNAL_REF(f->master, "grpc_secure_channel_create");
   }
+
+  grpc_client_channel_factory_unref(&exec_ctx, &f->base);
   grpc_exec_ctx_finish(&exec_ctx);
 
-  return channel;
+  return channel; /* may be NULL */
 }

src/core/lib/client_config/README.md

@@ -40,7 +40,7 @@ decisions (for example, by avoiding disconnected backends).
 Configured sub-channels are fully setup to participate in the grpc data plane.
 Their behavior is specified by a set of grpc channel filters defined at their
 construction. To customize this behavior, resolvers build
-grpc_subchannel_factory objects, which use the decorator pattern to customize
+grpc_client_channel_factory objects, which use the decorator pattern to customize
 construction arguments for concrete grpc_subchannel instances.
 
 

src/core/lib/client_config/subchannel_factory.c → src/core/lib/client_config/client_channel_factory.c

@@ -31,19 +31,25 @@
  *
  */
 
-#include "src/core/lib/client_config/subchannel_factory.h"
+#include "src/core/lib/client_config/client_channel_factory.h"
 
-void grpc_subchannel_factory_ref(grpc_subchannel_factory* factory) {
+void grpc_client_channel_factory_ref(grpc_client_channel_factory* factory) {
   factory->vtable->ref(factory);
 }
 
-void grpc_subchannel_factory_unref(grpc_exec_ctx* exec_ctx,
-                                   grpc_subchannel_factory* factory) {
+void grpc_client_channel_factory_unref(grpc_exec_ctx* exec_ctx,
+                                       grpc_client_channel_factory* factory) {
   factory->vtable->unref(exec_ctx, factory);
 }
 
-grpc_subchannel* grpc_subchannel_factory_create_subchannel(
-    grpc_exec_ctx* exec_ctx, grpc_subchannel_factory* factory,
+grpc_subchannel* grpc_client_channel_factory_create_subchannel(
+    grpc_exec_ctx* exec_ctx, grpc_client_channel_factory* factory,
     grpc_subchannel_args* args) {
   return factory->vtable->create_subchannel(exec_ctx, factory, args);
 }
+
+grpc_channel* grpc_client_channel_factory_create_channel(
+    grpc_exec_ctx* exec_ctx, grpc_client_channel_factory* factory,
+    const char* target, grpc_channel_args* args) {
+  return factory->vtable->create_channel(exec_ctx, factory, target, args);
+}

src/core/lib/client_config/subchannel_factory.h → src/core/lib/client_config/client_channel_factory.h

@@ -31,36 +31,48 @@
  *
  */
 
-#ifndef GRPC_CORE_LIB_CLIENT_CONFIG_SUBCHANNEL_FACTORY_H
-#define GRPC_CORE_LIB_CLIENT_CONFIG_SUBCHANNEL_FACTORY_H
+#ifndef GRPC_CORE_LIB_CLIENT_CONFIG_CLIENT_CHANNEL_FACTORY_H
+#define GRPC_CORE_LIB_CLIENT_CONFIG_CLIENT_CHANNEL_FACTORY_H
+
+#include <grpc/grpc_security.h>
+#include <grpc/impl/codegen/grpc_types.h>
 
 #include "src/core/lib/channel/channel_stack.h"
 #include "src/core/lib/client_config/subchannel.h"
 
-typedef struct grpc_subchannel_factory grpc_subchannel_factory;
-typedef struct grpc_subchannel_factory_vtable grpc_subchannel_factory_vtable;
+typedef struct grpc_client_channel_factory grpc_client_channel_factory;
+typedef struct grpc_client_channel_factory_vtable
+    grpc_client_channel_factory_vtable;
 
 /** Constructor for new configured channels.
     Creating decorators around this type is encouraged to adapt behavior. */
-struct grpc_subchannel_factory {
-  const grpc_subchannel_factory_vtable *vtable;
+struct grpc_client_channel_factory {
+  const grpc_client_channel_factory_vtable *vtable;
 };
 
-struct grpc_subchannel_factory_vtable {
-  void (*ref)(grpc_subchannel_factory *factory);
-  void (*unref)(grpc_exec_ctx *exec_ctx, grpc_subchannel_factory *factory);
+struct grpc_client_channel_factory_vtable {
+  void (*ref)(grpc_client_channel_factory *factory);
+  void (*unref)(grpc_exec_ctx *exec_ctx, grpc_client_channel_factory *factory);
   grpc_subchannel *(*create_subchannel)(grpc_exec_ctx *exec_ctx,
-                                        grpc_subchannel_factory *factory,
+                                        grpc_client_channel_factory *factory,
                                         grpc_subchannel_args *args);
+  grpc_channel *(*create_channel)(grpc_exec_ctx *exec_ctx,
+                                  grpc_client_channel_factory *factory,
+                                  const char *target, grpc_channel_args *args);
 };
 
-void grpc_subchannel_factory_ref(grpc_subchannel_factory *factory);
-void grpc_subchannel_factory_unref(grpc_exec_ctx *exec_ctx,
-                                   grpc_subchannel_factory *factory);
+void grpc_client_channel_factory_ref(grpc_client_channel_factory *factory);
+void grpc_client_channel_factory_unref(grpc_exec_ctx *exec_ctx,
+                                       grpc_client_channel_factory *factory);
 
 /** Create a new grpc_subchannel */
-grpc_subchannel *grpc_subchannel_factory_create_subchannel(
-    grpc_exec_ctx *exec_ctx, grpc_subchannel_factory *factory,
+grpc_subchannel *grpc_client_channel_factory_create_subchannel(
+    grpc_exec_ctx *exec_ctx, grpc_client_channel_factory *factory,
     grpc_subchannel_args *args);
 
-#endif /* GRPC_CORE_LIB_CLIENT_CONFIG_SUBCHANNEL_FACTORY_H */
+/** Create a new grpc_channel */
+grpc_channel *grpc_client_channel_factory_create_channel(
+    grpc_exec_ctx *exec_ctx, grpc_client_channel_factory *factory,
+    const char *target, grpc_channel_args *args);
+
+#endif /* GRPC_CORE_LIB_CLIENT_CONFIG_CLIENT_CHANNEL_FACTORY_H */

src/core/lib/client_config/resolver_factory.h

@@ -34,8 +34,8 @@
 #ifndef GRPC_CORE_LIB_CLIENT_CONFIG_RESOLVER_FACTORY_H
 #define GRPC_CORE_LIB_CLIENT_CONFIG_RESOLVER_FACTORY_H
 
+#include "src/core/lib/client_config/client_channel_factory.h"
 #include "src/core/lib/client_config/resolver.h"
-#include "src/core/lib/client_config/subchannel_factory.h"
 #include "src/core/lib/client_config/uri_parser.h"
 
 typedef struct grpc_resolver_factory grpc_resolver_factory;
@@ -49,7 +49,7 @@ struct grpc_resolver_factory {
 
 typedef struct grpc_resolver_args {
   grpc_uri *uri;
-  grpc_subchannel_factory *subchannel_factory;
+  grpc_client_channel_factory *client_channel_factory;
 } grpc_resolver_args;
 
 struct grpc_resolver_factory_vtable {

src/core/lib/client_config/resolver_registry.c

@@ -115,14 +115,14 @@ static grpc_resolver_factory *resolve_factory(const char *target,
 }
 
 grpc_resolver *grpc_resolver_create(
-    const char *target, grpc_subchannel_factory *subchannel_factory) {
+    const char *target, grpc_client_channel_factory *client_channel_factory) {
   grpc_uri *uri = NULL;
   grpc_resolver_factory *factory = resolve_factory(target, &uri);
   grpc_resolver *resolver;
   grpc_resolver_args args;
   memset(&args, 0, sizeof(args));
   args.uri = uri;
-  args.subchannel_factory = subchannel_factory;
+  args.client_channel_factory = client_channel_factory;
   resolver = grpc_resolver_factory_create_resolver(factory, &args);
   grpc_uri_destroy(uri);
   return resolver;

src/core/lib/client_config/resolver_registry.h

@@ -56,7 +56,7 @@ void grpc_register_resolver_type(grpc_resolver_factory *factory);
     return it.
     If a resolver factory was not found, return NULL. */
 grpc_resolver *grpc_resolver_create(
-    const char *target, grpc_subchannel_factory *subchannel_factory);
+    const char *target, grpc_client_channel_factory *client_channel_factory);
 
 /** Given a target, return a (freshly allocated with gpr_malloc) string
     representing the default authority to pass from a client. */

src/core/lib/client_config/resolvers/dns_resolver.c

@@ -60,7 +60,7 @@ typedef struct {
   /** default port to use */
   char *default_port;
   /** subchannel factory */
-  grpc_subchannel_factory *subchannel_factory;
+  grpc_client_channel_factory *client_channel_factory;
   /** load balancing policy name */
   char *lb_policy_name;
 
@@ -178,8 +178,9 @@ static void dns_on_resolved(grpc_exec_ctx *exec_ctx, void *arg,
       memset(&args, 0, sizeof(args));
       args.addr = (struct sockaddr *)(addresses->addrs[i].addr);
       args.addr_len = (size_t)addresses->addrs[i].len;
-      grpc_subchannel *subchannel = grpc_subchannel_factory_create_subchannel(
-          exec_ctx, r->subchannel_factory, &args);
+      grpc_subchannel *subchannel =
+          grpc_client_channel_factory_create_subchannel(
+              exec_ctx, r->client_channel_factory, &args);
       if (subchannel != NULL) {
         subchannels[naddrs++] = subchannel;
       }
@@ -244,7 +245,7 @@ static void dns_destroy(grpc_exec_ctx *exec_ctx, grpc_resolver *gr) {
   if (r->resolved_config) {
     grpc_client_config_unref(exec_ctx, r->resolved_config);
   }
-  grpc_subchannel_factory_unref(exec_ctx, r->subchannel_factory);
+  grpc_client_channel_factory_unref(exec_ctx, r->client_channel_factory);
   gpr_free(r->name);
   gpr_free(r->default_port);
   gpr_free(r->lb_policy_name);
@@ -271,10 +272,10 @@ static grpc_resolver *dns_create(grpc_resolver_args *args,
   grpc_resolver_init(&r->base, &dns_resolver_vtable);
   r->name = gpr_strdup(path);
   r->default_port = gpr_strdup(default_port);
-  r->subchannel_factory = args->subchannel_factory;
+  r->client_channel_factory = args->client_channel_factory;
   gpr_backoff_init(&r->backoff_state, BACKOFF_MULTIPLIER, BACKOFF_JITTER,
                    BACKOFF_MIN_SECONDS * 1000, BACKOFF_MAX_SECONDS * 1000);
-  grpc_subchannel_factory_ref(r->subchannel_factory);
+  grpc_client_channel_factory_ref(r->client_channel_factory);
   r->lb_policy_name = gpr_strdup(lb_policy_name);
   return &r->base;
 }

src/core/lib/client_config/resolvers/sockaddr_resolver.c

@@ -53,7 +53,7 @@ typedef struct {
   /** refcount */
   gpr_refcount refs;
   /** subchannel factory */
-  grpc_subchannel_factory *subchannel_factory;
+  grpc_client_channel_factory *client_channel_factory;
   /** load balancing policy name */
   char *lb_policy_name;
 
@@ -139,8 +139,8 @@ static void sockaddr_maybe_finish_next_locked(grpc_exec_ctx *exec_ctx,
       memset(&args, 0, sizeof(args));
       args.addr = (struct sockaddr *)&r->addrs[i];
       args.addr_len = r->addrs_len[i];
-      subchannels[i] = grpc_subchannel_factory_create_subchannel(
-          exec_ctx, r->subchannel_factory, &args);
+      subchannels[i] = grpc_client_channel_factory_create_subchannel(
+          exec_ctx, r->client_channel_factory, &args);
     }
     memset(&lb_policy_args, 0, sizeof(lb_policy_args));
     lb_policy_args.subchannels = subchannels;
@@ -159,7 +159,7 @@ static void sockaddr_maybe_finish_next_locked(grpc_exec_ctx *exec_ctx,
 static void sockaddr_destroy(grpc_exec_ctx *exec_ctx, grpc_resolver *gr) {
   sockaddr_resolver *r = (sockaddr_resolver *)gr;
   gpr_mu_destroy(&r->mu);
-  grpc_subchannel_factory_unref(exec_ctx, r->subchannel_factory);
+  grpc_client_channel_factory_unref(exec_ctx, r->client_channel_factory);
   gpr_free(r->addrs);
   gpr_free(r->addrs_len);
   gpr_free(r->lb_policy_name);
@@ -337,8 +337,8 @@ static grpc_resolver *sockaddr_create(
   gpr_ref_init(&r->refs, 1);
   gpr_mu_init(&r->mu);
   grpc_resolver_init(&r->base, &sockaddr_resolver_vtable);
-  r->subchannel_factory = args->subchannel_factory;
-  grpc_subchannel_factory_ref(r->subchannel_factory);
+  r->client_channel_factory = args->client_channel_factory;
+  grpc_client_channel_factory_ref(r->client_channel_factory);
 
   return &r->base;
 }

src/core/lib/client_config/resolvers/zookeeper_resolver.c

@@ -59,7 +59,7 @@ typedef struct {
   /** name to resolve */
   char *name;
   /** subchannel factory */
-  grpc_subchannel_factory *subchannel_factory;
+  grpc_client_channel_factory *client_channel_factory;
   /** load balancing policy name */
   char *lb_policy_name;
 
@@ -196,8 +196,8 @@ static void zookeeper_on_resolved(grpc_exec_ctx *exec_ctx, void *arg,
       memset(&args, 0, sizeof(args));
       args.addr = (struct sockaddr *)(addresses->addrs[i].addr);
       args.addr_len = addresses->addrs[i].len;
-      subchannels[i] = grpc_subchannel_factory_create_subchannel(
-          exec_ctx, r->subchannel_factory, &args);
+      subchannels[i] = grpc_client_channel_factory_create_subchannel(
+          exec_ctx, r->client_channel_factory, &args);
     }
     lb_policy_args.subchannels = subchannels;
     lb_policy_args.num_subchannels = addresses->naddrs;
@@ -432,7 +432,7 @@ static void zookeeper_destroy(grpc_exec_ctx *exec_ctx, grpc_resolver *gr) {
   if (r->resolved_config != NULL) {
     grpc_client_config_unref(exec_ctx, r->resolved_config);
   }
-  grpc_subchannel_factory_unref(exec_ctx, r->subchannel_factory);
+  grpc_client_channel_factory_unref(exec_ctx, r->client_channel_factory);
   gpr_free(r->name);
   gpr_free(r->lb_policy_name);
   gpr_free(r);
@@ -462,8 +462,8 @@ static grpc_resolver *zookeeper_create(grpc_resolver_args *args,
   grpc_resolver_init(&r->base, &zookeeper_resolver_vtable);
   r->name = gpr_strdup(path);
 
-  r->subchannel_factory = args->subchannel_factory;
-  grpc_subchannel_factory_ref(r->subchannel_factory);
+  r->client_channel_factory = args->client_channel_factory;
+  grpc_client_channel_factory_ref(r->client_channel_factory);
 
   r->lb_policy_name = gpr_strdup(lb_policy_name);
 

src/core/lib/surface/channel.h

@@ -35,7 +35,7 @@
 #define GRPC_CORE_LIB_SURFACE_CHANNEL_H
 
 #include "src/core/lib/channel/channel_stack.h"
-#include "src/core/lib/client_config/subchannel_factory.h"
+#include "src/core/lib/client_config/client_channel_factory.h"
 #include "src/core/lib/surface/channel_stack_type.h"
 
 grpc_channel *grpc_channel_create(grpc_exec_ctx *exec_ctx, const char *target,

src/python/grpcio/grpc_core_dependencies.py

@@ -117,6 +117,7 @@ CORE_SOURCE_FILES = [
   'src/core/lib/channel/http_client_filter.c',
   'src/core/lib/channel/http_server_filter.c',
   'src/core/lib/channel/subchannel_call_holder.c',
+  'src/core/lib/client_config/client_channel_factory.c',
   'src/core/lib/client_config/client_config.c',
   'src/core/lib/client_config/connector.c',
   'src/core/lib/client_config/default_initial_connect_string.c',
@@ -133,7 +134,6 @@ CORE_SOURCE_FILES = [
   'src/core/lib/client_config/resolvers/dns_resolver.c',
   'src/core/lib/client_config/resolvers/sockaddr_resolver.c',
   'src/core/lib/client_config/subchannel.c',
-  'src/core/lib/client_config/subchannel_factory.c',
   'src/core/lib/client_config/subchannel_index.c',
   'src/core/lib/client_config/uri_parser.c',
   'src/core/lib/compression/compression_algorithm.c',

test/core/client_config/resolvers/dns_resolver_connectivity_test.c

@@ -42,20 +42,27 @@
 #include "src/core/lib/iomgr/timer.h"
 #include "test/core/util/test_config.h"
 
-static void subchannel_factory_ref(grpc_subchannel_factory *scv) {}
-static void subchannel_factory_unref(grpc_exec_ctx *exec_ctx,
-                                     grpc_subchannel_factory *scv) {}
-static grpc_subchannel *subchannel_factory_create_subchannel(
-    grpc_exec_ctx *exec_ctx, grpc_subchannel_factory *factory,
+static void client_channel_factory_ref(grpc_client_channel_factory *scv) {}
+static void client_channel_factory_unref(grpc_exec_ctx *exec_ctx,
+                                         grpc_client_channel_factory *scv) {}
+static grpc_subchannel *client_channel_factory_create_subchannel(
+    grpc_exec_ctx *exec_ctx, grpc_client_channel_factory *factory,
     grpc_subchannel_args *args) {
   return NULL;
 }
 
-static const grpc_subchannel_factory_vtable sc_vtable = {
-    subchannel_factory_ref, subchannel_factory_unref,
-    subchannel_factory_create_subchannel};
+static grpc_channel *client_channel_factory_create_channel(
+    grpc_exec_ctx *exec_ctx, grpc_client_channel_factory *cc_factory,
+    const char *target, grpc_channel_args *args) {
+  GPR_UNREACHABLE_CODE(return NULL);
+}
+
+static const grpc_client_channel_factory_vtable sc_vtable = {
+    client_channel_factory_ref, client_channel_factory_unref,
+    client_channel_factory_create_subchannel,
+    client_channel_factory_create_channel};
 
-static grpc_subchannel_factory sc_factory = {&sc_vtable};
+static grpc_client_channel_factory cc_factory = {&sc_vtable};
 
 static gpr_mu g_mu;
 static bool g_fail_resolution = true;
@@ -85,7 +92,7 @@ static grpc_resolver *create_resolver(const char *name) {
   grpc_resolver_args args;
   memset(&args, 0, sizeof(args));
   args.uri = uri;
-  args.subchannel_factory = &sc_factory;
+  args.client_channel_factory = &cc_factory;
   grpc_resolver *resolver =
       grpc_resolver_factory_create_resolver(factory, &args);
   grpc_resolver_factory_unref(factory);

test/core/client_config/resolvers/dns_resolver_test.c

@@ -40,20 +40,27 @@
 #include "src/core/lib/client_config/resolver.h"
 #include "test/core/util/test_config.h"
 
-static void subchannel_factory_ref(grpc_subchannel_factory *scv) {}
-static void subchannel_factory_unref(grpc_exec_ctx *exec_ctx,
-                                     grpc_subchannel_factory *scv) {}
-static grpc_subchannel *subchannel_factory_create_subchannel(
-    grpc_exec_ctx *exec_ctx, grpc_subchannel_factory *factory,
+static void client_channel_factory_ref(grpc_client_channel_factory *scv) {}
+static void client_channel_factory_unref(grpc_exec_ctx *exec_ctx,
+                                         grpc_client_channel_factory *scv) {}
+static grpc_subchannel *client_channel_factory_create_subchannel(
+    grpc_exec_ctx *exec_ctx, grpc_client_channel_factory *factory,
     grpc_subchannel_args *args) {
   GPR_UNREACHABLE_CODE(return NULL);
 }
 
-static const grpc_subchannel_factory_vtable sc_vtable = {
-    subchannel_factory_ref, subchannel_factory_unref,
-    subchannel_factory_create_subchannel};
+static grpc_channel *client_channel_factory_create_channel(
+    grpc_exec_ctx *exec_ctx, grpc_client_channel_factory *cc_factory,
+    const char *target, grpc_channel_args *args) {
+  GPR_UNREACHABLE_CODE(return NULL);
+}
+
+static const grpc_client_channel_factory_vtable sc_vtable = {
+    client_channel_factory_ref, client_channel_factory_unref,
+    client_channel_factory_create_subchannel,
+    client_channel_factory_create_channel};
 
-static grpc_subchannel_factory sc_factory = {&sc_vtable};
+static grpc_client_channel_factory cc_factory = {&sc_vtable};
 
 static void test_succeeds(grpc_resolver_factory *factory, const char *string) {
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
@@ -65,7 +72,7 @@ static void test_succeeds(grpc_resolver_factory *factory, const char *string) {
   GPR_ASSERT(uri);
   memset(&args, 0, sizeof(args));
   args.uri = uri;
-  args.subchannel_factory = &sc_factory;
+  args.client_channel_factory = &cc_factory;
   resolver = grpc_resolver_factory_create_resolver(factory, &args);
   GPR_ASSERT(resolver != NULL);
   GRPC_RESOLVER_UNREF(&exec_ctx, resolver, "test_succeeds");

test/core/client_config/resolvers/sockaddr_resolver_test.c

@@ -40,20 +40,27 @@
 #include "src/core/lib/client_config/resolver.h"
 #include "test/core/util/test_config.h"
 
-static void subchannel_factory_ref(grpc_subchannel_factory *scv) {}
-static void subchannel_factory_unref(grpc_exec_ctx *exec_ctx,
-                                     grpc_subchannel_factory *scv) {}
-static grpc_subchannel *subchannel_factory_create_subchannel(
-    grpc_exec_ctx *exec_ctx, grpc_subchannel_factory *factory,
+static void client_channel_factory_ref(grpc_client_channel_factory *scv) {}
+static void client_channel_factory_unref(grpc_exec_ctx *exec_ctx,
+                                         grpc_client_channel_factory *scv) {}
+static grpc_subchannel *client_channel_factory_create_subchannel(
+    grpc_exec_ctx *exec_ctx, grpc_client_channel_factory *factory,
     grpc_subchannel_args *args) {
   GPR_UNREACHABLE_CODE(return NULL);
 }
 
-static const grpc_subchannel_factory_vtable sc_vtable = {
-    subchannel_factory_ref, subchannel_factory_unref,
-    subchannel_factory_create_subchannel};
+static grpc_channel *client_channel_factory_create_channel(
+    grpc_exec_ctx *exec_ctx, grpc_client_channel_factory *cc_factory,
+    const char *target, grpc_channel_args *args) {
+  GPR_UNREACHABLE_CODE(return NULL);
+}
+
+static const grpc_client_channel_factory_vtable sc_vtable = {
+    client_channel_factory_ref, client_channel_factory_unref,
+    client_channel_factory_create_subchannel,
+    client_channel_factory_create_channel};
 
-static grpc_subchannel_factory sc_factory = {&sc_vtable};
+static grpc_client_channel_factory cc_factory = {&sc_vtable};
 
 static void test_succeeds(grpc_resolver_factory *factory, const char *string) {
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
@@ -65,7 +72,7 @@ static void test_succeeds(grpc_resolver_factory *factory, const char *string) {
   GPR_ASSERT(uri);
   memset(&args, 0, sizeof(args));
   args.uri = uri;
-  args.subchannel_factory = &sc_factory;
+  args.client_channel_factory = &cc_factory;
   resolver = grpc_resolver_factory_create_resolver(factory, &args);
   GPR_ASSERT(resolver != NULL);
   GRPC_RESOLVER_UNREF(&exec_ctx, resolver, "test_succeeds");

tools/doxygen/Doxyfile.core.internal

@@ -809,6 +809,7 @@ src/core/lib/channel/context.h \
 src/core/lib/channel/http_client_filter.h \
 src/core/lib/channel/http_server_filter.h \
 src/core/lib/channel/subchannel_call_holder.h \
+src/core/lib/client_config/client_channel_factory.h \
 src/core/lib/client_config/client_config.h \
 src/core/lib/client_config/connector.h \
 src/core/lib/client_config/initial_connect_string.h \
@@ -824,7 +825,6 @@ src/core/lib/client_config/resolver_registry.h \
 src/core/lib/client_config/resolvers/dns_resolver.h \
 src/core/lib/client_config/resolvers/sockaddr_resolver.h \
 src/core/lib/client_config/subchannel.h \
-src/core/lib/client_config/subchannel_factory.h \
 src/core/lib/client_config/subchannel_index.h \
 src/core/lib/client_config/uri_parser.h \
 src/core/lib/compression/algorithm_metadata.h \
@@ -957,6 +957,7 @@ src/core/lib/channel/connected_channel.c \
 src/core/lib/channel/http_client_filter.c \
 src/core/lib/channel/http_server_filter.c \
 src/core/lib/channel/subchannel_call_holder.c \
+src/core/lib/client_config/client_channel_factory.c \
 src/core/lib/client_config/client_config.c \
 src/core/lib/client_config/connector.c \
 src/core/lib/client_config/default_initial_connect_string.c \
@@ -973,7 +974,6 @@ src/core/lib/client_config/resolver_registry.c \
 src/core/lib/client_config/resolvers/dns_resolver.c \
 src/core/lib/client_config/resolvers/sockaddr_resolver.c \
 src/core/lib/client_config/subchannel.c \
-src/core/lib/client_config/subchannel_factory.c \
 src/core/lib/client_config/subchannel_index.c \
 src/core/lib/client_config/uri_parser.c \
 src/core/lib/compression/compression_algorithm.c \

tools/run_tests/sources_and_headers.json

@@ -4024,6 +4024,7 @@
       "src/core/lib/channel/http_client_filter.h", 
       "src/core/lib/channel/http_server_filter.h", 
       "src/core/lib/channel/subchannel_call_holder.h", 
+      "src/core/lib/client_config/client_channel_factory.h", 
       "src/core/lib/client_config/client_config.h", 
       "src/core/lib/client_config/connector.h", 
       "src/core/lib/client_config/initial_connect_string.h", 
@@ -4039,7 +4040,6 @@
       "src/core/lib/client_config/resolvers/dns_resolver.h", 
       "src/core/lib/client_config/resolvers/sockaddr_resolver.h", 
       "src/core/lib/client_config/subchannel.h", 
-      "src/core/lib/client_config/subchannel_factory.h", 
       "src/core/lib/client_config/subchannel_index.h", 
       "src/core/lib/client_config/uri_parser.h", 
       "src/core/lib/compression/algorithm_metadata.h", 
@@ -4225,6 +4225,8 @@
       "src/core/lib/channel/http_server_filter.h", 
       "src/core/lib/channel/subchannel_call_holder.c", 
       "src/core/lib/channel/subchannel_call_holder.h", 
+      "src/core/lib/client_config/client_channel_factory.c", 
+      "src/core/lib/client_config/client_channel_factory.h", 
       "src/core/lib/client_config/client_config.c", 
       "src/core/lib/client_config/client_config.h", 
       "src/core/lib/client_config/connector.c", 
@@ -4256,8 +4258,6 @@
       "src/core/lib/client_config/resolvers/sockaddr_resolver.h", 
       "src/core/lib/client_config/subchannel.c", 
       "src/core/lib/client_config/subchannel.h", 
-      "src/core/lib/client_config/subchannel_factory.c", 
-      "src/core/lib/client_config/subchannel_factory.h", 
       "src/core/lib/client_config/subchannel_index.c", 
       "src/core/lib/client_config/subchannel_index.h", 
       "src/core/lib/client_config/uri_parser.c", 
@@ -4652,6 +4652,7 @@
       "src/core/lib/channel/http_client_filter.h", 
       "src/core/lib/channel/http_server_filter.h", 
       "src/core/lib/channel/subchannel_call_holder.h", 
+      "src/core/lib/client_config/client_channel_factory.h", 
       "src/core/lib/client_config/client_config.h", 
       "src/core/lib/client_config/connector.h", 
       "src/core/lib/client_config/initial_connect_string.h", 
@@ -4667,7 +4668,6 @@
       "src/core/lib/client_config/resolvers/dns_resolver.h", 
       "src/core/lib/client_config/resolvers/sockaddr_resolver.h", 
       "src/core/lib/client_config/subchannel.h", 
-      "src/core/lib/client_config/subchannel_factory.h", 
       "src/core/lib/client_config/subchannel_index.h", 
       "src/core/lib/client_config/uri_parser.h", 
       "src/core/lib/compression/algorithm_metadata.h", 
@@ -4836,6 +4836,8 @@
       "src/core/lib/channel/http_server_filter.h", 
       "src/core/lib/channel/subchannel_call_holder.c", 
       "src/core/lib/channel/subchannel_call_holder.h", 
+      "src/core/lib/client_config/client_channel_factory.c", 
+      "src/core/lib/client_config/client_channel_factory.h", 
       "src/core/lib/client_config/client_config.c", 
       "src/core/lib/client_config/client_config.h", 
       "src/core/lib/client_config/connector.c", 
@@ -4867,8 +4869,6 @@
       "src/core/lib/client_config/resolvers/sockaddr_resolver.h", 
       "src/core/lib/client_config/subchannel.c", 
       "src/core/lib/client_config/subchannel.h", 
-      "src/core/lib/client_config/subchannel_factory.c", 
-      "src/core/lib/client_config/subchannel_factory.h", 
       "src/core/lib/client_config/subchannel_index.c", 
       "src/core/lib/client_config/subchannel_index.h", 
       "src/core/lib/client_config/uri_parser.c", 

vsprojects/vcxproj/grpc/grpc.vcxproj

@@ -318,6 +318,7 @@
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\http_client_filter.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\http_server_filter.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\subchannel_call_holder.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\client_config\client_channel_factory.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\client_config\client_config.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\client_config\connector.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\client_config\initial_connect_string.h" />
@@ -333,7 +334,6 @@
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\client_config\resolvers\dns_resolver.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\client_config\resolvers\sockaddr_resolver.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\client_config\subchannel.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\lib\client_config\subchannel_factory.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\client_config\subchannel_index.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\client_config\uri_parser.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\compression\algorithm_metadata.h" />
@@ -511,6 +511,8 @@
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\subchannel_call_holder.c">
     </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\client_config\client_channel_factory.c">
+    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\client_config\client_config.c">
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\client_config\connector.c">
@@ -543,8 +545,6 @@
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\client_config\subchannel.c">
     </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\lib\client_config\subchannel_factory.c">
-    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\client_config\subchannel_index.c">
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\client_config\uri_parser.c">

vsprojects/vcxproj/grpc/grpc.vcxproj.filters

@@ -130,6 +130,9 @@
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\subchannel_call_holder.c">
       <Filter>src\core\lib\channel</Filter>
     </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\client_config\client_channel_factory.c">
+      <Filter>src\core\lib\client_config</Filter>
+    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\client_config\client_config.c">
       <Filter>src\core\lib\client_config</Filter>
     </ClCompile>
@@ -178,9 +181,6 @@
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\client_config\subchannel.c">
       <Filter>src\core\lib\client_config</Filter>
     </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\lib\client_config\subchannel_factory.c">
-      <Filter>src\core\lib\client_config</Filter>
-    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\client_config\subchannel_index.c">
       <Filter>src\core\lib\client_config</Filter>
     </ClCompile>
@@ -644,6 +644,9 @@
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\subchannel_call_holder.h">
       <Filter>src\core\lib\channel</Filter>
     </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\client_config\client_channel_factory.h">
+      <Filter>src\core\lib\client_config</Filter>
+    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\client_config\client_config.h">
       <Filter>src\core\lib\client_config</Filter>
     </ClInclude>
@@ -689,9 +692,6 @@
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\client_config\subchannel.h">
       <Filter>src\core\lib\client_config</Filter>
     </ClInclude>
-    <ClInclude Include="$(SolutionDir)\..\src\core\lib\client_config\subchannel_factory.h">
-      <Filter>src\core\lib\client_config</Filter>
-    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\client_config\subchannel_index.h">
       <Filter>src\core\lib\client_config</Filter>
     </ClInclude>

vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj

@@ -308,6 +308,7 @@
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\http_client_filter.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\http_server_filter.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\subchannel_call_holder.h" />
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\client_config\client_channel_factory.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\client_config\client_config.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\client_config\connector.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\client_config\initial_connect_string.h" />
@@ -323,7 +324,6 @@
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\client_config\resolvers\dns_resolver.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\client_config\resolvers\sockaddr_resolver.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\client_config\subchannel.h" />
-    <ClInclude Include="$(SolutionDir)\..\src\core\lib\client_config\subchannel_factory.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\client_config\subchannel_index.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\client_config\uri_parser.h" />
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\compression\algorithm_metadata.h" />
@@ -483,6 +483,8 @@
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\subchannel_call_holder.c">
     </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\client_config\client_channel_factory.c">
+    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\client_config\client_config.c">
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\client_config\connector.c">
@@ -515,8 +517,6 @@
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\client_config\subchannel.c">
     </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\lib\client_config\subchannel_factory.c">
-    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\client_config\subchannel_index.c">
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\client_config\uri_parser.c">

vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj.filters

@@ -124,6 +124,9 @@
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\channel\subchannel_call_holder.c">
       <Filter>src\core\lib\channel</Filter>
     </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\src\core\lib\client_config\client_channel_factory.c">
+      <Filter>src\core\lib\client_config</Filter>
+    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\client_config\client_config.c">
       <Filter>src\core\lib\client_config</Filter>
     </ClCompile>
@@ -172,9 +175,6 @@
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\client_config\subchannel.c">
       <Filter>src\core\lib\client_config</Filter>
     </ClCompile>
-    <ClCompile Include="$(SolutionDir)\..\src\core\lib\client_config\subchannel_factory.c">
-      <Filter>src\core\lib\client_config</Filter>
-    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\src\core\lib\client_config\subchannel_index.c">
       <Filter>src\core\lib\client_config</Filter>
     </ClCompile>
@@ -581,6 +581,9 @@
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\channel\subchannel_call_holder.h">
       <Filter>src\core\lib\channel</Filter>
     </ClInclude>
+    <ClInclude Include="$(SolutionDir)\..\src\core\lib\client_config\client_channel_factory.h">
+      <Filter>src\core\lib\client_config</Filter>
+    </ClInclude>
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\client_config\client_config.h">
       <Filter>src\core\lib\client_config</Filter>
     </ClInclude>
@@ -626,9 +629,6 @@
     <ClInclude Include="$(SolutionDir)\..\src\core\lib\client_config\subchannel.h">
       <Filter>src\core\lib\client_config</Filter>
     </ClInclude>
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