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Merge pull request #3 from cedric-pessan/master
Pzq cluster feature with replications
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,109 @@ | ||
| /* | ||
| * Copyright 2014 Cédric Pessan <[email protected]> | ||
| * | ||
| * Licensed 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. | ||
| */ | ||
|
|
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| #include "ackcache.hpp" | ||
| #include "time.hpp" | ||
|
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| using std::string; | ||
|
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| namespace pzq | ||
| { | ||
| ackcache_t::ackcache_t( uint64_t timeoutReplication ) | ||
| { | ||
| pzq::log( "Initializing ack cache" ); | ||
| m_timeoutReplication = timeoutReplication; | ||
| } | ||
|
|
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| ackcache_t::~ackcache_t() | ||
| { | ||
| } | ||
|
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| void ackcache_t::push( const std::string& idMsg, pzq::message_t ack, int replicas ) | ||
| { | ||
| m_cache.insert( ack_t( idMsg, ack, microsecond_timestamp() + m_timeoutReplication, replicas ) ); | ||
| } | ||
|
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| pzq::message_t ackcache_t::getAndRemoveById( string id ) | ||
| { | ||
| pzq::message_t msg; | ||
|
|
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| cache_t::nth_index< 0 >::type& index = m_cache.get< 0 >(); | ||
| cache_t::nth_index< 0 >::type::iterator it = index.find( id ); | ||
| if( it != index.end() ) | ||
| { | ||
| it->decrementReplicas(); | ||
| if(it->getReplicas() == 0 ) | ||
| { | ||
| msg = it->getAck(); | ||
| index.erase( it ); | ||
| } | ||
| } | ||
|
|
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| return msg; | ||
| } | ||
|
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| int ackcache_t::getDelayUntilNextAck() const | ||
| { | ||
| if( m_cache.size() == 0) return std::numeric_limits< int >::max(); | ||
|
|
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| const cache_t::nth_index< 1 >::type& index = m_cache.get< 1 >(); | ||
| return ( (int64_t)microsecond_timestamp() - (int64_t)index.begin()->m_ts ) / 1000; | ||
| } | ||
|
|
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| pzq::message_t ackcache_t::pop() | ||
| { | ||
| if( m_cache.size() == 0) return pzq::message_t(); | ||
|
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| cache_t::nth_index< 1 >::type& index = m_cache.get< 1 >(); | ||
| pzq::message_t msg = index.begin()->getAck(); | ||
| index.erase( index.begin() ); | ||
| return msg; | ||
| } | ||
|
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| ackcache_t::ack_t::ack_t( const string& idmsg, pzq::message_t ack, uint64_t ts, int replicas ) | ||
| { | ||
| m_idmsg = idmsg; | ||
| m_ts= ts; | ||
| m_ack = ack; | ||
| m_replicas = shared_ptr< int >( new int ); | ||
| *m_replicas = replicas; | ||
| } | ||
|
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| ackcache_t::ack_t::~ack_t() | ||
| { | ||
| } | ||
|
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| ackcache_t::ack_t::ack_t( const ack_t& ack ) | ||
| { | ||
| m_idmsg = ack.m_idmsg; | ||
| m_ts = ack.m_ts; | ||
| } | ||
|
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| pzq::message_t ackcache_t::ack_t::getAck() const | ||
| { | ||
| return m_ack; | ||
| } | ||
|
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| void ackcache_t::ack_t::decrementReplicas() const | ||
| { | ||
| (*m_replicas)--; | ||
| } | ||
|
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| int ackcache_t::ack_t::getReplicas() const | ||
| { | ||
| return *m_replicas; | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,85 @@ | ||
| /* | ||
| * Copyright 2014 Cédric Pessan <[email protected]> | ||
| * | ||
| * Licensed 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. | ||
| */ | ||
|
|
||
| #ifndef PZQ_ACKCACHE_HPP | ||
| #define PZQ_ACKCACHE_HPP | ||
|
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| #include "pzq.hpp" | ||
|
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| #include <boost/multi_index_container.hpp> | ||
| #include <boost/multi_index/hashed_index.hpp> | ||
| #include <boost/multi_index/ordered_index.hpp> | ||
| #include <boost/multi_index/member.hpp> | ||
|
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| using namespace ::boost; | ||
| using namespace ::boost::multi_index; | ||
|
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| namespace pzq | ||
| { | ||
| class ackcache_t | ||
| { | ||
| public: | ||
| ackcache_t( uint64_t timeoutReplication ); | ||
| ~ackcache_t(); | ||
|
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| void push( const std::string& idMsg, pzq::message_t ack, int replicas ); | ||
|
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| pzq::message_t getAndRemoveById( std::string id ); | ||
|
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| int getDelayUntilNextAck() const; | ||
|
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| pzq::message_t pop(); | ||
|
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| class ack_t | ||
| { | ||
| public: | ||
| ack_t( const std::string& idMsg, pzq::message_t ack, uint64_t ts, int replicas ); | ||
| ack_t( const ack_t& ); | ||
| ~ack_t(); | ||
|
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| pzq::message_t getAck() const; | ||
| void decrementReplicas() const; | ||
| int getReplicas() const; | ||
|
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| private: | ||
| ack_t(); | ||
| ack_t& operator=( const ack_t& ); | ||
|
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| pzq::message_t m_ack; | ||
|
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| public: | ||
| std::string m_idmsg; | ||
| uint64_t m_ts; | ||
| shared_ptr< int > m_replicas; | ||
| }; | ||
|
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| typedef multi_index_container< | ||
| ack_t, | ||
| indexed_by< | ||
| hashed_unique< member< ack_t, std::string, &ack_t::m_idmsg > >, | ||
| ordered_unique< member< ack_t, uint64_t, &ack_t::m_ts > > > > cache_t; | ||
|
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| private: | ||
| ackcache_t(); | ||
| ackcache_t( const ackcache_t& ); | ||
| ackcache_t& operator=( const ackcache_t& ); | ||
|
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| cache_t m_cache; | ||
| uint64_t m_timeoutReplication; | ||
| }; | ||
| } | ||
|
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| #endif // PZQ_ACKCACHE_HPP |
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