certificate-cache-ttl.cpp

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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
#include "certificate-cache-ttl.hpp"

namespace ndn {

CertificateCacheTtl::CertificateCacheTtl(boost::asio::io_service& io,
                                         const time::seconds& defaultTtl/* = time::seconds(3600)*/)
  : m_defaultTtl(defaultTtl)
  , m_scheduler(io)
{
}

CertificateCacheTtl::~CertificateCacheTtl()
{
}

void
CertificateCacheTtl::insertCertificate(shared_ptr<const IdentityCertificate> certificate)
{
  m_scheduler.scheduleEvent(time::seconds(0), [this, certificate] { this->insert(certificate); });
}

shared_ptr<const IdentityCertificate>
CertificateCacheTtl::getCertificate(const Name& certificateName)
{
  Cache::iterator it = m_cache.find(certificateName);
  if (it != m_cache.end())
    return it->second.first;
  else
    return shared_ptr<IdentityCertificate>();
}

void
CertificateCacheTtl::reset()
{
  m_scheduler.scheduleEvent(time::seconds(0), [this] { this->removeAll(); });
}

size_t
CertificateCacheTtl::getSize()
{
  return m_cache.size();
}

void
CertificateCacheTtl::insert(shared_ptr<const IdentityCertificate> certificate)
{
  time::milliseconds expire = (certificate->getFreshnessPeriod() >= time::seconds::zero() ?
                               certificate->getFreshnessPeriod() : m_defaultTtl);

  Name index = certificate->getName().getPrefix(-1);

  Cache::iterator it = m_cache.find(index);
  if (it != m_cache.end())
    m_scheduler.cancelEvent(it->second.second);

  EventId eventId = m_scheduler.scheduleEvent(expire,
                                              bind(&CertificateCacheTtl::remove,
                                                   this, certificate->getName()));

  m_cache[index] = std::make_pair(certificate, eventId);
}

void
CertificateCacheTtl::remove(const Name& certificateName)
{
  Name name = certificateName.getPrefix(-1);
  Cache::iterator it = m_cache.find(name);
  if (it != m_cache.end())
    m_cache.erase(it);
}

void
CertificateCacheTtl::removeAll()
{
  for(Cache::iterator it = m_cache.begin(); it != m_cache.end(); it++)
    m_scheduler.cancelEvent(it->second.second);

  m_cache.clear();
}

} // namespace ndn