Merge pull request #16628 from apolcyn/respect_no_logging

Follow by the no_logging param to grpc_parse_ipv6_hostport

src/core/ext/filters/client_channel/parse_address.cc

@@ -129,30 +129,37 @@ bool grpc_parse_ipv6_hostport(const char* hostport, grpc_resolved_address* addr,
     size_t host_without_scope_len = static_cast<size_t>(host_end - host);
     uint32_t sin6_scope_id = 0;
     if (host_without_scope_len > GRPC_INET6_ADDRSTRLEN) {
-      gpr_log(GPR_ERROR,
-              "invalid ipv6 address length %zu. Length cannot be greater than "
-              "GRPC_INET6_ADDRSTRLEN i.e %d)",
-              host_without_scope_len, GRPC_INET6_ADDRSTRLEN);
+      if (log_errors) {
+        gpr_log(
+            GPR_ERROR,
+            "invalid ipv6 address length %zu. Length cannot be greater than "
+            "GRPC_INET6_ADDRSTRLEN i.e %d)",
+            host_without_scope_len, GRPC_INET6_ADDRSTRLEN);
+      }
       goto done;
     }
     strncpy(host_without_scope, host, host_without_scope_len);
     host_without_scope[host_without_scope_len] = '\0';
     if (grpc_inet_pton(GRPC_AF_INET6, host_without_scope, &in6->sin6_addr) ==
         0) {
-      gpr_log(GPR_ERROR, "invalid ipv6 address: '%s'", host_without_scope);
+      if (log_errors) {
+        gpr_log(GPR_ERROR, "invalid ipv6 address: '%s'", host_without_scope);
+      }
       goto done;
     }
     if (gpr_parse_bytes_to_uint32(host_end + 1,
                                   strlen(host) - host_without_scope_len - 1,
                                   &sin6_scope_id) == 0) {
-      gpr_log(GPR_ERROR, "invalid ipv6 scope id: '%s'", host_end + 1);
+      if (log_errors) {
+        gpr_log(GPR_ERROR, "invalid ipv6 scope id: '%s'", host_end + 1);
+      }
       goto done;
     }
     // Handle "sin6_scope_id" being type "u_long". See grpc issue #10027.
     in6->sin6_scope_id = sin6_scope_id;
   } else {
     if (grpc_inet_pton(GRPC_AF_INET6, host, &in6->sin6_addr) == 0) {
-      gpr_log(GPR_ERROR, "invalid ipv6 address: '%s'", host);
+      if (log_errors) gpr_log(GPR_ERROR, "invalid ipv6 address: '%s'", host);
       goto done;
     }
   }