| /** @file |
| |
| PoolableSession - class that extends ProxySession so that they can be cataloged for reuse. |
| |
| @section license License |
| |
| 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 "ProxySession.h" |
| |
| class PoolableSession : public ProxySession |
| { |
| using self_type = PoolableSession; |
| using super_type = ProxySession; |
| |
| public: |
| enum PooledState { |
| INIT, |
| SSN_IN_USE, // actively in use |
| KA_RESERVED, // stuck to client |
| KA_POOLED, // free for reuse |
| }; |
| |
| /// Hash map descriptor class for IP map. |
| struct IPLinkage { |
| self_type *_next = nullptr; |
| self_type *_prev = nullptr; |
| |
| static self_type *&next_ptr(self_type *); |
| static self_type *&prev_ptr(self_type *); |
| static uint32_t hash_of(sockaddr const *key); |
| static sockaddr const *key_of(self_type const *ssn); |
| static bool equal(sockaddr const *lhs, sockaddr const *rhs); |
| // Add a couple overloads for internal convenience. |
| static bool equal(sockaddr const *lhs, PoolableSession const *rhs); |
| static bool equal(PoolableSession const *lhs, sockaddr const *rhs); |
| } _ip_link; |
| |
| /// Hash map descriptor class for FQDN map. |
| struct FQDNLinkage { |
| self_type *_next = nullptr; |
| self_type *_prev = nullptr; |
| |
| static self_type *&next_ptr(self_type *); |
| static self_type *&prev_ptr(self_type *); |
| static uint64_t hash_of(CryptoHash const &key); |
| static CryptoHash const &key_of(self_type *ssn); |
| static bool equal(CryptoHash const &lhs, CryptoHash const &rhs); |
| } _fqdn_link; |
| |
| CryptoHash hostname_hash; |
| PooledState state = INIT; |
| |
| // Copy of the owning SM's server session sharing settings |
| TSServerSessionSharingMatchMask sharing_match = TS_SERVER_SESSION_SHARING_MATCH_MASK_NONE; |
| TSServerSessionSharingPoolType sharing_pool = TS_SERVER_SESSION_SHARING_POOL_GLOBAL; |
| |
| // Keep track of connection limiting and a pointer to the |
| // singleton that keeps track of the connection counts. |
| OutboundConnTrack::Group *conn_track_group = nullptr; |
| |
| void set_active(); |
| bool is_active(); |
| void set_private(bool new_private = true); |
| bool is_private() const; |
| |
| void set_netvc(NetVConnection *newvc); |
| |
| private: |
| // Sessions become if authentication headers |
| // are sent over them |
| bool private_session = false; |
| }; |
| |
| inline void |
| PoolableSession::set_active() |
| { |
| state = SSN_IN_USE; |
| } |
| inline bool |
| PoolableSession::is_active() |
| { |
| return state == SSN_IN_USE; |
| } |
| inline void |
| PoolableSession::set_private(bool new_private) |
| { |
| private_session = new_private; |
| } |
| inline bool |
| PoolableSession::is_private() const |
| { |
| return private_session; |
| } |
| |
| inline void |
| PoolableSession::set_netvc(NetVConnection *newvc) |
| { |
| ProxySession::_vc = newvc; |
| } |
| |
| // |
| // LINKAGE |
| |
| inline PoolableSession *& |
| PoolableSession::IPLinkage::next_ptr(self_type *ssn) |
| { |
| return ssn->_ip_link._next; |
| } |
| |
| inline PoolableSession *& |
| PoolableSession::IPLinkage::prev_ptr(self_type *ssn) |
| { |
| return ssn->_ip_link._prev; |
| } |
| |
| inline uint32_t |
| PoolableSession::IPLinkage::hash_of(sockaddr const *key) |
| { |
| return ats_ip_hash(key); |
| } |
| |
| inline sockaddr const * |
| PoolableSession::IPLinkage::key_of(self_type const *ssn) |
| { |
| return ssn->get_remote_addr(); |
| } |
| |
| inline bool |
| PoolableSession::IPLinkage::equal(sockaddr const *lhs, sockaddr const *rhs) |
| { |
| return ats_ip_addr_port_eq(lhs, rhs); |
| } |
| |
| inline bool |
| PoolableSession::IPLinkage::equal(sockaddr const *lhs, PoolableSession const *rhs) |
| { |
| return ats_ip_addr_port_eq(lhs, key_of(rhs)); |
| } |
| |
| inline bool |
| PoolableSession::IPLinkage::equal(PoolableSession const *lhs, sockaddr const *rhs) |
| { |
| return ats_ip_addr_port_eq(key_of(lhs), rhs); |
| } |
| |
| inline PoolableSession *& |
| PoolableSession::FQDNLinkage::next_ptr(self_type *ssn) |
| { |
| return ssn->_fqdn_link._next; |
| } |
| |
| inline PoolableSession *& |
| PoolableSession::FQDNLinkage::prev_ptr(self_type *ssn) |
| { |
| return ssn->_fqdn_link._prev; |
| } |
| |
| inline uint64_t |
| PoolableSession::FQDNLinkage::hash_of(CryptoHash const &key) |
| { |
| return key.fold(); |
| } |
| |
| inline CryptoHash const & |
| PoolableSession::FQDNLinkage::key_of(self_type *ssn) |
| { |
| return ssn->hostname_hash; |
| } |
| |
| inline bool |
| PoolableSession::FQDNLinkage::equal(CryptoHash const &lhs, CryptoHash const &rhs) |
| { |
| return lhs == rhs; |
| } |