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ircd::server: Add DNS expiration TTL state to peer.

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This commit is contained in:
Jason Volk 2020-11-05 01:20:20 -08:00
parent ba24dd1018
commit d6200a7ac3
3 changed files with 64 additions and 3 deletions
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6
include/ircd/server/peer.h
View file

@ -27,11 +27,14 @@ struct ircd::server::peer
static conf::item<size_t> link_min_default;
static conf::item<size_t> link_max_default;
static conf::item<seconds> error_clear_default;
static conf::item<seconds> remote_ttl_min;
static conf::item<seconds> remote_ttl_max;
static uint64_t ids;
uint64_t id {++ids};
net::ipport remote;
std::string hostcanon; // hostname:service[:port]
net::ipport remote;
system_point remote_expires;
net::open_opts open_opts;
std::list<link> links;
std::unique_ptr<err> e;
@ -70,6 +73,7 @@ struct ircd::server::peer
public:
// indicator lights
bool finished() const;
bool expired() const;
// config related
size_t link_min() const;

59
ircd/server.cc
View file

@ -708,6 +708,20 @@ ircd::server::peer::link_max_default
{ "default", 4L }
};
decltype(ircd::server::peer::remote_ttl_min)
ircd::server::peer::remote_ttl_min
{
{ "name", "ircd.server.peer.remote.ttl.min" },
{ "default", 21600L },
};
decltype(ircd::server::peer::remote_ttl_max)
ircd::server::peer::remote_ttl_max
{
{ "name", "ircd.server.peer.remote.ttl.max" },
{ "default", 259200L },
};
decltype(ircd::server::peer::ids)
ircd::server::peer::ids;
@ -1365,6 +1379,7 @@ try
if(rfc3986::valid(std::nothrow, rfc3986::parser::ip_address, host(hostport)))
{
this->remote = {host(hostport), port(hostport)};
this->remote_expires = system_point::max();
open_opts.ipport = this->remote;
open_links();
return;
@ -1525,9 +1540,26 @@ try
};
assert(!net::dns::is_error(rr));
const json::string &ip
{
rr.at("ip")
};
// Save the results of the query to this object instance.
this->remote = net::ipport
{
unquote(rr.at("ip")), port(this->remote)?: port(target)
ip, port(this->remote)?: port(target)
};
// Mark the absolute time-point this remote will need to be refreshed
this->remote_expires =
{
now<system_point>() + std::clamp
(
seconds(rr.get("ttl", 43200L)),
seconds(remote_ttl_min),
seconds(remote_ttl_max)
)
};
open_opts.ipport = this->remote;
@ -1588,10 +1620,26 @@ try
__builtin_unreachable();
}
const json::string &ip
{
rr.at("ip")
};
// Save the results of the query to this object instance.
this->remote = net::ipport
{
unquote(rr.at("ip")), port(this->remote)?: port(target)
ip, port(this->remote)?: port(target)
};
// Mark the absolute time-point this remote will need to be refreshed
this->remote_expires =
{
now<system_point>() + std::clamp
(
seconds(rr.get("ttl", 21600L)),
seconds(remote_ttl_min),
seconds(remote_ttl_max)
)
};
open_opts.ipport = this->remote;
@ -1803,6 +1851,13 @@ const
return link_max_default;
}
bool
ircd::server::peer::expired()
const
{
return remote_expires < ircd::now<system_point>();
}
bool
ircd::server::peer::finished()
const

2
modules/console.cc
View file

@ -5600,6 +5600,7 @@ try
out
<< std::setw(4) << std::left << "ID" << ' '
<< std::setw(40) << std::right << "ADDRESS" << ' '
<< std::setw(7) << std::right << "TTL" << ' '
<< std::setw(50) << std::left << "NAME" << ' '
<< std::setw(23) << std::left << "READ-TOTAL" << ' '
<< std::setw(23) << std::left << "WRITE-TOTAL" << ' '
@ -5633,6 +5634,7 @@ try
out
<< std::setw(4) << std::left << peer.id << ' '
<< std::setw(40) << std::right << net::ipport{peer.remote} << ' '
<< std::setw(7) << std::right << duration_cast<seconds>(peer.remote_expires - now<system_point>()).count() << ' '
<< std::setw(50) << std::left << trunc(host, 50) << ' '
<< std::setw(23) << std::left << pretty(pbuf, iec(peer.read_total())) << ' '
<< std::setw(23) << std::left << pretty(pbuf, iec(peer.write_total())) << ' '