| // Licensed to the Apache Software Foundation (ASF) under one |
| // or more contributor license agreements. See the NOTICE file |
| // distributed with this work for additional information |
| // regarding copyright ownership. The ASF licenses this file |
| // to you under the Apache License, Version 2.0 (the |
| // "License"); you may not use this file except in compliance |
| // with the License. You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, |
| // software distributed under the License is distributed on an |
| // "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| // KIND, either express or implied. See the License for the |
| // specific language governing permissions and limitations |
| // under the License. |
| |
| #include "kudu/clock/system_unsync_time.h" |
| |
| #include <ostream> |
| |
| #include <gflags/gflags.h> |
| #include <glog/logging.h> |
| |
| #include "kudu/gutil/port.h" |
| #include "kudu/gutil/walltime.h" |
| #include "kudu/util/flag_tags.h" |
| |
| DEFINE_bool(inject_unsync_time_errors, false, |
| "If true, both Init() and WalltimeWithError() return " |
| "'clock considered unsynchronized' error."); |
| TAG_FLAG(inject_unsync_time_errors, unsafe); |
| |
| namespace kudu { |
| namespace clock { |
| |
| Status SystemUnsyncTime::Init() { |
| LOG(WARNING) << "NTP support is disabled. Clock error bounds will not " |
| << "be accurate. This configuration is not suitable for " |
| << "distributed clusters."; |
| if (PREDICT_FALSE(FLAGS_inject_unsync_time_errors)) { |
| return Status::ServiceUnavailable("Injected clock unsync error"); |
| } |
| return Status::OK(); |
| } |
| |
| Status SystemUnsyncTime::WalltimeWithError(uint64_t* now_usec, uint64_t* error_usec) { |
| if (PREDICT_FALSE(FLAGS_inject_unsync_time_errors)) { |
| return Status::ServiceUnavailable("Injected clock unsync error"); |
| } |
| *now_usec = GetCurrentTimeMicros(); |
| *error_usec = 0; |
| return Status::OK(); |
| } |
| |
| } // namespace clock |
| } // namespace kudu |