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// Copyright 2016 Yahoo Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <fcntl.h>
#include <errno.h>
#include <unistd.h>
#include <time.h>
#include <sys/stat.h>
#include <vespa/log/log.h>
LOG_SETUP("logdemon");
LOG_RCSID("$Id$");
#include <logd/errhandle.h>
#include <logd/sigterm.h>
#include <logd/service.h>
#include <logd/forward.h>
#include <logd/conf.h>
#include <logd/watch.h>
#include <logd/conn.h>
#include <vespa/config/common/exceptions.h>
using namespace logdemon;
using config::FileSpec;
int main(int, char**)
{
Forwarder fwd;
EV_STARTED("logdemon");
hook_signals();
const char *cfid = getenv("VESPA_CONFIG_ID");
try {
std::unique_ptr<ConfSub> subscriberP;
subscriberP.reset(new ConfSub(fwd, config::ConfigUri(cfid)));
ConfSub & subscriber(*subscriberP);
int sleepcount = 0;
while (true) {
Watcher watcher(subscriber, fwd);
try {
subscriber.latch();
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 (gotSignaled()) {
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 (gotSignaled()) {
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) {
if (gotSignalNumber() == SIGTERM) {
LOG(debug, "stopping on SIGTERM");
EV_STOPPING("logdemon", "done ok.");
} else {
LOG(warning, "stopping on signal %d", gotSignalNumber());
char buf[100];
snprintf(buf, sizeof buf, "got signal %d", gotSignalNumber());
EV_STOPPING("logdemon", buf);
}
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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