| // 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. |
| #pragma once |
| |
| #include <utility> |
| #include <vector> |
| |
| #include "kudu/kserver/kserver_options.h" |
| #include "kudu/util/cache.h" |
| #include "kudu/util/net/net_util.h" |
| #include "kudu/util/status.h" |
| |
| namespace kudu { |
| |
| namespace master { |
| |
| // Options for constructing the master. |
| // These are filled in by gflags by default -- see the .cc file for |
| // the list of options and corresponding flags. |
| struct MasterOptions : public kserver::KuduServerOptions { |
| MasterOptions(); |
| |
| // Fetch master addresses from the user supplied gflags which may be empty |
| // for single master configuration. |
| // NOTE: Only to be used during master init time as masters can be added/removed dynamically. |
| // Use Master::GetMasterHostPorts() instead after initializing the master at runtime. |
| const std::vector<HostPort>& master_addresses() const { |
| return master_addresses_; |
| } |
| |
| // Only to be used only during init time as masters can be added/removed dynamically. |
| bool IsDistributed() const { |
| return master_addresses_.size() > 1; |
| } |
| |
| // For a single master configuration output the only master address in 'hp', if available. |
| // Otherwise NotFound error or IllegalState for distributed master config. |
| Status GetTheOnlyMasterAddress(HostPort* hp) const; |
| |
| // Allows setting/overwriting list of masters. Only to be used by tests. |
| void SetMasterAddressesForTests(std::vector<HostPort> addresses) { |
| master_addresses_ = std::move(addresses); |
| } |
| |
| void set_block_cache_metrics_policy(Cache::ExistingMetricsPolicy b) { |
| block_cache_metrics_policy_ = b; |
| } |
| |
| Cache::ExistingMetricsPolicy block_cache_metrics_policy() const { |
| return block_cache_metrics_policy_; |
| } |
| |
| private: |
| // The list of deduplicated masters, as specified by --master_addresses. |
| std::vector<HostPort> master_addresses_; |
| Cache::ExistingMetricsPolicy block_cache_metrics_policy_; |
| }; |
| |
| } // namespace master |
| } // namespace kudu |