Only log data at TCP level if flag is DEBUG

src/core/lib/iomgr/tcp_posix.cc

@@ -408,15 +408,17 @@ static void call_read_cb(grpc_tcp* tcp, grpc_error* error) {
     gpr_log(GPR_INFO, "TCP:%p call_cb %p %p:%p", tcp, cb, cb->cb, cb->cb_arg);
     size_t i;
     const char* str = grpc_error_string(error);
-    gpr_log(GPR_INFO, "read: error=%s", str);
+    gpr_log(GPR_INFO, "READ %p (peer=%s) error=%s", tcp, tcp->peer_string, str);
 
+    if (gpr_should_log(GPR_LOG_SEVERITY_DEBUG)) {
       for (i = 0; i < tcp->incoming_buffer->count; i++) {
         char* dump = grpc_dump_slice(tcp->incoming_buffer->slices[i],
                                      GPR_DUMP_HEX | GPR_DUMP_ASCII);
-      gpr_log(GPR_INFO, "READ %p (peer=%s): %s", tcp, tcp->peer_string, dump);
+        gpr_log(GPR_DEBUG, "DATA: %s", dump);
         gpr_free(dump);
       }
     }
+  }
 
   tcp->read_cb = nullptr;
   tcp->incoming_buffer = nullptr;
@@ -976,12 +978,15 @@ static void tcp_write(grpc_endpoint* ep, grpc_slice_buffer* buf,
     size_t i;
 
     for (i = 0; i < buf->count; i++) {
+      gpr_log(GPR_INFO, "WRITE %p (peer=%s)", tcp, tcp->peer_string);
+      if (gpr_should_log(GPR_LOG_SEVERITY_DEBUG)) {
         char* data =
             grpc_dump_slice(buf->slices[i], GPR_DUMP_HEX | GPR_DUMP_ASCII);
-      gpr_log(GPR_INFO, "WRITE %p (peer=%s): %s", tcp, tcp->peer_string, data);
+        gpr_log(GPR_DEBUG, "DATA: %s", data);
         gpr_free(data);
       }
     }
+  }
 
   GPR_ASSERT(tcp->write_cb == nullptr);