Avoid duplication in build rules by expanding the grpc_cc_libraries rule-creation macro

BUILD

@@ -54,33 +54,46 @@ grpc_cc_library(
     ],
 )
 
-grpc_cc_library(
-    name = "grpc",
+grpc_cc_libraries(
+    name_list = ["grpc", "grpc_unsecure",],
     srcs = [
         "src/core/lib/surface/init.c",
-        "src/core/plugin_registry/grpc_plugin_registry.c",
+    ],
+    additional_src_list = [
+        [
+            "src/core/plugin_registry/grpc_plugin_registry.c",
+        ],
+        [
+            "src/core/lib/surface/init_unsecure.c",
+            "src/core/plugin_registry/grpc_unsecure_plugin_registry.c",
+        ],
     ],
     language = "c",
     standalone = True,
     deps = [
         "census",
         "grpc_base",
-        "grpc_lb_policy_grpclb_secure",
         "grpc_lb_policy_pick_first",
         "grpc_lb_policy_round_robin",
         "grpc_load_reporting",
         "grpc_max_age_filter",
-        "grpc_resolver_dns_ares",
         "grpc_resolver_dns_native",
         "grpc_resolver_sockaddr",
-        "grpc_secure",
         "grpc_transport_chttp2_client_insecure",
-        "grpc_transport_chttp2_client_secure",
         "grpc_transport_chttp2_server_insecure",
-        "grpc_transport_chttp2_server_secure",
         "grpc_message_size_filter",
         "grpc_deadline_filter",
     ],
+    additional_dep_list = [
+        [
+            "grpc_secure",
+            "grpc_resolver_dns_ares",
+            "grpc_lb_policy_grpclb_secure",
+            "grpc_transport_chttp2_client_secure",
+            "grpc_transport_chttp2_server_secure",
+        ],
+        [],
+    ],
 )
 
 grpc_cc_library(
@@ -98,32 +111,6 @@ grpc_cc_library(
     ],
 )
 
-grpc_cc_library(
-    name = "grpc_unsecure",
-    srcs = [
-        "src/core/lib/surface/init.c",
-        "src/core/lib/surface/init_unsecure.c",
-        "src/core/plugin_registry/grpc_unsecure_plugin_registry.c",
-    ],
-    language = "c",
-    standalone = True,
-    deps = [
-        "census",
-        "grpc_base",
-        "grpc_lb_policy_grpclb",
-        "grpc_lb_policy_pick_first",
-        "grpc_lb_policy_round_robin",
-        "grpc_load_reporting",
-        "grpc_max_age_filter",
-        "grpc_resolver_dns_native",
-        "grpc_resolver_sockaddr",
-        "grpc_transport_chttp2_client_insecure",
-        "grpc_transport_chttp2_server_insecure",
-        "grpc_message_size_filter",
-        "grpc_deadline_filter",
-    ],
-)
-
 grpc_cc_library(
     name = "grpc++",
     srcs = [

bazel/grpc_build_system.bzl

@@ -49,14 +49,17 @@ def grpc_cc_library(name, srcs = [], public_hdrs = [], hdrs = [], external_deps
     ]
   )
 
-def grpc_cc_libraries(name_list, additional_dep_list, srcs = [], public_hdrs = [], hdrs = [], external_deps = [], deps = [], standalone = False, language="C++"):
-  for i in range(len(name_list)):
+def grpc_cc_libraries(name_list, additional_src_list = [], additional_dep_list = [], srcs = [], public_hdrs = [], hdrs = [], external_deps = [], deps = [], standalone = False, language="C++"):
+  names = len(name_list)
+  asl = additional_src_list + [[]]*(names - len(additional_src_list))
+  adl = additional_dep_list + [[]]*(names - len(additional_dep_list))
+  for i in range(names):
     grpc_cc_library(
       name = name_list[i],
-      srcs = srcs,
+      srcs = srcs + asl[i],
       hdrs = hdrs,
       public_hdrs = public_hdrs,
-      deps = deps + additional_dep_list[i],
+      deps = deps + adl[i],
       external_deps = external_deps,
       standalone = standalone,
       language = language