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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,104 @@ | ||
| // Copyright (C) 2018 Bluzelle | ||
| // | ||
| // This program is free software: you can redistribute it and/or modify | ||
| // it under the terms of the GNU Affero General Public License, version 3, | ||
| // as published by the Free Software Foundation. | ||
| // | ||
| // This program is distributed in the hope that it will be useful, | ||
| // but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| // GNU Affero General Public License for more details. | ||
| // | ||
| // You should have received a copy of the GNU Affero General Public License | ||
| // along with this program. If not, see <http://www.gnu.org/licenses/>. | ||
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| #include <pbft/pbft_config_store.hpp> | ||
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| using namespace bzn; | ||
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| pbft_config_store::pbft_config_store() | ||
| : current_index(0), next_index(1) | ||
| { | ||
| } | ||
|
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| bool | ||
| pbft_config_store::add(pbft_configuration::shared_const_ptr config) | ||
| { | ||
| // TODO - should we be making a copy here instead? | ||
| // currently the added config could be changed externally after being added | ||
| return (this->configs.insert(std::make_pair(this->next_index++, std::make_pair(config, false)))).second; | ||
| } | ||
|
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| pbft_config_store::config_map::const_iterator | ||
| pbft_config_store::find_by_hash(hash_t hash) const | ||
| { | ||
| auto config = std::find_if(this->configs.begin(), this->configs.end(), | ||
| [hash](auto c) | ||
| { | ||
| return c.second.first->get_hash() == hash; | ||
| }); | ||
|
|
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| return config; | ||
| } | ||
|
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| bool | ||
| pbft_config_store::set_current(const hash_t& hash) | ||
| { | ||
| auto config = this->find_by_hash(hash); | ||
| if (config == this->configs.end()) | ||
| return false; | ||
|
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| this->current_index = config->first; | ||
| return true; | ||
| } | ||
|
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| bool | ||
| pbft_config_store::remove_prior_to(const hash_t& hash) | ||
| { | ||
| auto config = this->find_by_hash(hash); | ||
| if (config == this->configs.end()) | ||
| return false; | ||
|
|
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| this->configs.erase(this->configs.begin(), config); | ||
| return true; | ||
| } | ||
|
|
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| pbft_configuration::shared_const_ptr | ||
| pbft_config_store::get(const hash_t& hash) const | ||
| { | ||
| auto config = this->find_by_hash(hash); | ||
| return config != this->configs.end() ? config->second.first : nullptr; | ||
| } | ||
|
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| bool | ||
| pbft_config_store::enable(const hash_t& hash, bool val) | ||
| { | ||
| // can't find_by_hash here because we need a non-const | ||
| auto config = std::find_if(this->configs.begin(), this->configs.end(), | ||
| [hash](auto c) | ||
| { | ||
| return c.second.first->get_hash() == hash; | ||
| }); | ||
|
|
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| if (config != this->configs.end()) | ||
| { | ||
| config->second.second = val; | ||
| return true; | ||
| } | ||
|
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| return false; | ||
| } | ||
|
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| bool | ||
| pbft_config_store::is_enabled(const hash_t& hash) const | ||
| { | ||
| auto config = this->find_by_hash(hash); | ||
| return config != this->configs.end() ? config->second.second : false; | ||
| } | ||
|
|
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| pbft_configuration::shared_const_ptr | ||
| pbft_config_store::current() const | ||
| { | ||
| auto it = this->configs.find(this->current_index); | ||
| return it != this->configs.end() ? it->second.first : nullptr; | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,50 @@ | ||
| // Copyright (C) 2018 Bluzelle | ||
| // | ||
| // This program is free software: you can redistribute it and/or modify | ||
| // it under the terms of the GNU Affero General Public License, version 3, | ||
| // as published by the Free Software Foundation. | ||
| // | ||
| // This program is distributed in the hope that it will be useful, | ||
| // but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| // GNU Affero General Public License for more details. | ||
| // | ||
| // You should have received a copy of the GNU Affero General Public License | ||
| // along with this program. If not, see <http://www.gnu.org/licenses/>. | ||
|
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| #pragma once | ||
|
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| #include <pbft/pbft_configuration.hpp> | ||
| #include <map> | ||
|
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| namespace bzn | ||
| { | ||
| using hash_t = std::string; | ||
|
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| class pbft_config_store | ||
| { | ||
| public: | ||
| pbft_config_store(); | ||
|
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| bool add(pbft_configuration::shared_const_ptr config); | ||
| bool remove_prior_to(const hash_t& hash); | ||
| pbft_configuration::shared_const_ptr get(const hash_t& hash) const; | ||
|
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| bool set_current(const hash_t& hash); | ||
| pbft_configuration::shared_const_ptr current() const; | ||
|
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| bool enable(const hash_t& hash, bool val = true); | ||
| bool is_enabled(const hash_t& hash) const; | ||
|
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| private: | ||
| using index_t = uint64_t; | ||
| using config_map = std::map<index_t, std::pair<pbft_configuration::shared_const_ptr, bool>>; | ||
| config_map::const_iterator find_by_hash(hash_t hash) const; | ||
|
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| // a map from the config index to a pair of <config, is_config_enabled> | ||
| config_map configs; | ||
| index_t current_index; | ||
| index_t next_index; | ||
| }; | ||
| } | ||
|
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