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// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab
#include "client.h"
#include <seastar/core/sleep.hh>
#include "crimson/common/log.h"
#include "crimson/net/Connection.h"
#include "crimson/net/Messenger.h"
#include "messages/MMgrConfigure.h"
#include "messages/MMgrMap.h"
#include "messages/MMgrOpen.h"
namespace {
seastar::logger& logger()
{
return crimson::get_logger(ceph_subsys_mgrc);
}
}
using crimson::common::local_conf;
namespace crimson::mgr
{
Client::Client(crimson::net::Messenger& msgr,
WithStats& with_stats)
: msgr{msgr},
with_stats{with_stats},
report_timer{[this] {report();}}
{}
seastar::future<> Client::start()
{
return seastar::now();
}
seastar::future<> Client::stop()
{
logger().info("{}", __func__);
report_timer.cancel();
auto fut = gate.close();
if (conn) {
conn->mark_down();
}
return fut;
}
std::optional<seastar::future<>>
Client::ms_dispatch(crimson::net::ConnectionRef conn, MessageRef m)
{
bool dispatched = true;
gate.dispatch_in_background(__func__, *this, [this, conn, &m, &dispatched] {
switch(m->get_type()) {
case MSG_MGR_MAP:
return handle_mgr_map(conn, boost::static_pointer_cast<MMgrMap>(m));
case MSG_MGR_CONFIGURE:
return handle_mgr_conf(conn, boost::static_pointer_cast<MMgrConfigure>(m));
default:
dispatched = false;
return seastar::now();
}
});
return (dispatched ? std::make_optional(seastar::now()) : std::nullopt);
}
void Client::ms_handle_connect(
crimson::net::ConnectionRef c,
seastar::shard_id prv_shard)
{
ceph_assert_always(prv_shard == seastar::this_shard_id());
gate.dispatch_in_background(__func__, *this, [this, c] {
if (conn == c) {
// ask for the mgrconfigure message
auto m = crimson::make_message<MMgrOpen>();
m->daemon_name = local_conf()->name.get_id();
local_conf().get_config_bl(0, &m->config_bl, &last_config_bl_version);
local_conf().get_defaults_bl(&m->config_defaults_bl);
return conn->send(std::move(m));
} else {
return seastar::now();
}
});
}
void Client::ms_handle_reset(crimson::net::ConnectionRef c, bool /* is_replace */)
{
gate.dispatch_in_background(__func__, *this, [this, c] {
if (conn == c) {
report_timer.cancel();
return reconnect();
} else {
return seastar::now();
}
});
}
seastar::future<> Client::reconnect()
{
if (conn) {
conn->mark_down();
conn = {};
}
if (!mgrmap.get_available()) {
logger().warn("No active mgr available yet");
return seastar::now();
}
auto retry_interval = std::chrono::duration<double>(
local_conf().get_val<double>("mgr_connect_retry_interval"));
auto a_while = std::chrono::duration_cast<seastar::steady_clock_type::duration>(
retry_interval);
return seastar::sleep(a_while).then([this] {
auto peer = mgrmap.get_active_addrs().pick_addr(msgr.get_myaddr().get_type());
if (peer == entity_addr_t{}) {
// crimson msgr only uses the first bound addr
logger().error("mgr.{} does not have an addr compatible with me",
mgrmap.get_active_name());
return;
}
conn = msgr.connect(peer, CEPH_ENTITY_TYPE_MGR);
});
}
seastar::future<> Client::handle_mgr_map(crimson::net::ConnectionRef,
Ref<MMgrMap> m)
{
mgrmap = m->get_map();
if (!conn) {
return reconnect();
} else if (conn->get_peer_addr() !=
mgrmap.get_active_addrs().legacy_addr()) {
return reconnect();
} else {
return seastar::now();
}
}
seastar::future<> Client::handle_mgr_conf(crimson::net::ConnectionRef,
Ref<MMgrConfigure> m)
{
logger().info("{} {}", __func__, *m);
auto report_period = std::chrono::seconds{m->stats_period};
if (report_period.count()) {
if (report_timer.armed()) {
report_timer.rearm(report_timer.get_timeout(), report_period);
} else {
report_timer.arm_periodic(report_period);
}
} else {
report_timer.cancel();
}
return seastar::now();
}
void Client::report()
{
gate.dispatch_in_background(__func__, *this, [this] {
if (!conn) {
logger().warn("report: no conn available; raport skipped");
return seastar::now();
}
return with_stats.get_stats(
).then([this](auto &&pg_stats) {
return conn->send(std::move(pg_stats));
});
});
}
void Client::print(std::ostream& out) const
{
out << "mgrc ";
}
}
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