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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include <logd/config_subscriber.h>
#include <logd/empty_forwarder.h>
#include <logd/exceptions.h>
#include <logd/metrics.h>
#include <logd/state_reporter.h>
#include <logd/watcher.h>
#include <vespa/config/common/exceptions.h>
#include <vespa/vespalib/util/sig_catch.h>
#include <csignal>
#include <unistd.h>
#include <vespa/log/log.h>
LOG_SETUP("logdemon");
using namespace logdemon;
using config::FileSpec;
int main(int, char**)
{
StateReporter stateReporter;
Metrics metrics(stateReporter.metrics());
EV_STARTED("logdemon");
vespalib::SigCatch catcher;
const char *cfid = getenv("VESPA_CONFIG_ID");
try {
config::ConfigUri config_uri(cfid);
ConfigSubscriber subscriber(config_uri);
Forwarder::UP forwarder;
int sleepcount = 0;
while (true) {
try {
subscriber.latch();
if (!forwarder || subscriber.need_new_forwarder()) {
forwarder = subscriber.make_forwarder(metrics);
}
Watcher watcher(subscriber, *forwarder);
stateReporter.setStatePort(subscriber.getStatePort());
stateReporter.gotConf(subscriber.generation());
sleepcount = 0 ; // connection OK, reset sleep time
watcher.watchfile();
} catch (ConnectionException& ex) {
LOG(debug, "connection exception: %s", ex.what());
forwarder.reset();
}
if (catcher.receivedStopSignal()) {
throw SigTermException("caught signal");
}
if (sleepcount < 60) {
++sleepcount;
} else {
sleepcount = 60;
}
LOG(debug, "sleep %d...", sleepcount);
for (int i = 0; i < sleepcount; i++) {
sleep(1);
if (catcher.receivedStopSignal()) {
throw SigTermException("caught signal");
}
}
}
} catch (config::ConfigRuntimeException & ex) {
LOG(error, "Configuration failed: %s", ex.what());
EV_STOPPING("logdemon", "bad config");
return 1;
} catch (config::InvalidConfigException & ex) {
LOG(error, "Configuration failed: %s", ex.what());
EV_STOPPING("logdemon", "bad config");
return 1;
} catch (SigTermException& ex) {
LOG(debug, "stopping on SIGTERM");
EV_STOPPING("logdemon", "done ok.");
return 0;
} catch (MsgException& ex) {
LOG(error, "stopping on error: %s", ex.what());
EV_STOPPING("logdemon", "fatal error");
return 1;
} catch (std::exception & ex) {
LOG(error, "unknown exception: %s", ex.what());
EV_STOPPING("logdemon", "unknown error");
return 1;
}
LOG(error, "connecting to logserver failed");
EV_STOPPING("logdemon", "giving up after endless retries");
return 1;
}
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