Fix the initialization by modifying the grpc_channel_args_is_census_enabled to by default return census_enabled() instead of always disable

src/core/channel/channel_args.c

@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015, Google Inc.
+ * Copyright 2015-2016, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -35,6 +35,7 @@
 #include "src/core/channel/channel_args.h"
 #include "src/core/support/string.h"
 
+#include <grpc/census.h>
 #include <grpc/support/alloc.h>
 #include <grpc/support/string_util.h>
 #include <grpc/support/useful.h>
@@ -119,10 +120,10 @@ int grpc_channel_args_is_census_enabled(const grpc_channel_args *a) {
   if (a == NULL) return 0;
   for (i = 0; i < a->num_args; i++) {
     if (0 == strcmp(a->args[i].key, GRPC_ARG_ENABLE_CENSUS)) {
-      return a->args[i].value.integer != 0;
+      return a->args[i].value.integer != 0 && census_enabled();
     }
   }
-  return 0;
+  return census_enabled();
 }
 
 grpc_compression_algorithm grpc_channel_args_get_compression_algorithm(

src/core/surface/channel_create.c

@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015-2016, Google Inc.
+ * Copyright 2015, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -36,7 +36,6 @@
 #include <stdlib.h>
 #include <string.h>
 
-#include <grpc/census.h>
 #include <grpc/support/alloc.h>
 #include <grpc/support/slice.h>
 #include <grpc/support/slice_buffer.h>
@@ -201,7 +200,7 @@ grpc_channel *grpc_insecure_channel_create(const char *target,
       "grpc_insecure_channel_create(target=%p, args=%p, reserved=%p)", 3,
       (target, args, reserved));
   GPR_ASSERT(!reserved);
-  if (grpc_channel_args_is_census_enabled(args) || census_enabled()) {
+  if (grpc_channel_args_is_census_enabled(args)) {
     filters[n++] = &grpc_client_census_filter;
   }
   filters[n++] = &grpc_compress_filter;

src/core/surface/secure_channel_create.c

@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2015-2016, Google Inc.
+ * Copyright 2015, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -36,7 +36,6 @@
 #include <stdlib.h>
 #include <string.h>
 
-#include <grpc/census.h>
 #include <grpc/support/alloc.h>
 #include <grpc/support/slice.h>
 #include <grpc/support/slice_buffer.h>
@@ -296,7 +295,7 @@ grpc_channel *grpc_secure_channel_create(grpc_channel_credentials *creds,
   args_copy = grpc_channel_args_copy_and_add(
       new_args_from_connector != NULL ? new_args_from_connector : args,
       &connector_arg, 1);
-  if (grpc_channel_args_is_census_enabled(args) || census_enabled()) {
+  if (grpc_channel_args_is_census_enabled(args)) {
     filters[n++] = &grpc_client_census_filter;
   }
   filters[n++] = &grpc_compress_filter;

src/core/surface/server.c

@@ -37,7 +37,6 @@
 #include <stdlib.h>
 #include <string.h>
 
-#include <grpc/census.h>
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 #include <grpc/support/string_util.h>
@@ -780,8 +779,7 @@ grpc_server *grpc_server_create_from_filters(
     const grpc_channel_filter **filters, size_t filter_count,
     const grpc_channel_args *args) {
   size_t i;
-  int enable_census =
+  int census_enabled = grpc_channel_args_is_census_enabled(args);
-      grpc_channel_args_is_census_enabled(args) || census_enabled();
 
   grpc_server *server = gpr_malloc(sizeof(grpc_server));
 
@@ -815,15 +813,15 @@ grpc_server *grpc_server_create_from_filters(
      grpc_server_census_filter (optional) - for stats collection and tracing
      {passed in filter stack}
      grpc_connected_channel_filter - for interfacing with transports */
-  server->channel_filter_count = filter_count + 1u + (enable_census ? 1u : 0u);
+  server->channel_filter_count = filter_count + 1u + (census_enabled ? 1u : 0u);
   server->channel_filters =
       gpr_malloc(server->channel_filter_count * sizeof(grpc_channel_filter *));
   server->channel_filters[0] = &server_surface_filter;
-  if (enable_census) {
+  if (census_enabled) {
     server->channel_filters[1] = &grpc_server_census_filter;
   }
   for (i = 0; i < filter_count; i++) {
-    server->channel_filters[i + 1u + (enable_census ? 1u : 0u)] = filters[i];
+    server->channel_filters[i + 1u + (census_enabled ? 1u : 0u)] = filters[i];
   }
 
   server->channel_args = grpc_channel_args_copy(args);