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// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include <logd/errhandle.h>
#include <logd/forward.h>
#include <logd/conf.h>
#include <logd/watch.h>
#include <logd/state.h>
#include <logd/metrics.h>
#include <vespa/config/common/exceptions.h>
#include <csignal>
#include <unistd.h>
#include <vespa/vespalib/util/sig_catch.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());
Forwarder fwd(metrics);
EV_STARTED("logdemon");
vespalib::SigCatch catcher;
const char *cfid = getenv("VESPA_CONFIG_ID");
try {
ConfSub subscriber(fwd, config::ConfigUri(cfid));
int sleepcount = 0;
while (true) {
Watcher watcher(subscriber, fwd);
try {
subscriber.latch();
stateReporter.setStatePort(subscriber.getStatePort());
stateReporter.gotConf(subscriber.generation());
int fd = subscriber.getservfd();
if (fd >= 0) {
sleepcount = 0 ; // connection OK, reset sleep time
watcher.watchfile();
} else {
LOG(spam, "bad fd in subscriber");
}
} catch (ConnectionException& ex) {
LOG(debug, "connection exception: %s", ex.what());
subscriber.closeConn();
}
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 (...) {
LOG(error, "unknown exception");
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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