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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include "config_subscriber.h"
#include "empty_forwarder.h"
#include "rpc_forwarder.h"
#include <vespa/config/subscription/configsubscriber.hpp>
#include <vespa/log/log.h>
LOG_SETUP("");
using cloud::config::log::LogdConfig;
using ns_log::Logger;
namespace logdemon {
void
ConfigSubscriber::configure(std::unique_ptr<LogdConfig> cfg)
{
const LogdConfig &newconf(*cfg);
if (newconf.logserver.host != _logserver_host) {
_logserver_host = newconf.logserver.host;
_need_new_forwarder = true;
}
if (newconf.logserver.use != _use_logserver) {
_use_logserver = newconf.logserver.use;
_need_new_forwarder = true;
}
_state_port = newconf.stateport;
ForwardMap forwardMap;
forwardMap[Logger::fatal] = newconf.loglevel.fatal.forward;
forwardMap[Logger::error] = newconf.loglevel.error.forward;
forwardMap[Logger::warning] = newconf.loglevel.warning.forward;
forwardMap[Logger::config] = newconf.loglevel.config.forward;
forwardMap[Logger::info] = newconf.loglevel.info.forward;
forwardMap[Logger::event] = newconf.loglevel.event.forward;
forwardMap[Logger::debug] = newconf.loglevel.debug.forward;
forwardMap[Logger::spam] = newconf.loglevel.spam.forward;
if (forwardMap != _forward_filter) {
_forward_filter = forwardMap;
_need_new_forwarder = true;
}
if (newconf.logserver.rpcport != _logserver_rpc_port) {
_logserver_rpc_port = newconf.logserver.rpcport;
_need_new_forwarder = true;
}
if (newconf.rotate.size > 0) {
_rotate_size = newconf.rotate.size;
} else {
LOG(config, "bad rotate.size=%d must be positive", newconf.rotate.size);
}
if (newconf.rotate.age > 0) {
_rotate_age = std::chrono::seconds(newconf.rotate.age);
} else {
LOG(config, "bad rotate.age=%d must be positive", newconf.rotate.age);
}
if (newconf.remove.totalmegabytes > 0) {
_remove_meg = newconf.remove.totalmegabytes;
} else {
LOG(config, "bad remove.totalmegabytes=%d must be positive", newconf.remove.totalmegabytes);
}
if (newconf.remove.age > 0) {
_remove_age = std::chrono::hours(newconf.remove.age * 24);
} else {
LOG(config, "bad remove.age=%d must be positive", newconf.remove.age);
}
}
bool
ConfigSubscriber::checkAvailable()
{
if (_subscriber.nextGenerationNow()) {
_has_available = true;
}
return _has_available;
}
void
ConfigSubscriber::latch()
{
if (checkAvailable()) {
configure(_handle->getConfig());
_has_available = false;
}
}
ConfigSubscriber::ConfigSubscriber(const config::ConfigUri& configUri)
: _logserver_host(),
_logserver_rpc_port(0),
_state_port(0),
_forward_filter(),
_rotate_size(INT_MAX),
_rotate_age(vespalib::duration::max()),
_remove_meg(INT_MAX),
_remove_age(std::chrono::hours(30*24)),
_use_logserver(true),
_subscriber(configUri.getContext()),
_handle(),
_has_available(false),
_need_new_forwarder(true),
_server()
{
_handle = _subscriber.subscribe<LogdConfig>(configUri.getConfigId());
_subscriber.nextConfigNow();
configure(_handle->getConfig());
LOG(debug, "got logServer %s", _logserver_host.c_str());
LOG(debug, "got handle %p", _handle.get());
}
ConfigSubscriber::~ConfigSubscriber()
{
LOG(debug, "forget logServer %s", _logserver_host.c_str());
LOG(debug, "done ~ConfSub()");
}
std::unique_ptr<Forwarder>
ConfigSubscriber::make_forwarder(Metrics& metrics)
{
std::unique_ptr<Forwarder> result;
if (_use_logserver) {
result = std::make_unique<RpcForwarder>(metrics, _forward_filter, _server.supervisor(), _logserver_host,
_logserver_rpc_port, 60.0, 100);
} else {
result = std::make_unique<EmptyForwarder>(metrics);
}
_need_new_forwarder = false;
return result;
}
}
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