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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.service.health;
import com.yahoo.vespa.applicationmodel.ServiceStatus;
import com.yahoo.vespa.applicationmodel.ServiceStatusInfo;
import java.net.URL;
import java.time.Duration;
import java.time.Instant;
import java.util.Optional;
import java.util.logging.Logger;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/**
* @author hakonhall
*/
class StateV1HealthUpdater implements HealthUpdater {
private static final Logger logger = Logger.getLogger(StateV1HealthUpdater.class.getName());
private static final Pattern CONFIG_SERVER_ENDPOINT_PATTERN = Pattern.compile("^http://(cfg[0-9]+)\\.");
private final String endpoint;
private final StateV1HealthClient healthClient;
private volatile ServiceStatusInfo serviceStatusInfo = new ServiceStatusInfo(ServiceStatus.UNKNOWN);
StateV1HealthUpdater(URL url, Duration requestTimeout, Duration connectionKeepAlive) {
this(url.toString(), new StateV1HealthClient(url, requestTimeout, connectionKeepAlive));
}
StateV1HealthUpdater(String endpoint, StateV1HealthClient healthClient) {
this.endpoint = endpoint;
this.healthClient = healthClient;
}
@Override
public ServiceStatusInfo getServiceStatusInfo() {
return serviceStatusInfo;
}
@Override
public void run() {
// Get time before fetching rather than after, to make the resulting age be an upper limit.
Instant now = Instant.now();
HealthInfo healthInfo;
try {
healthInfo = healthClient.get();
} catch (Exception e) {
healthInfo = HealthInfo.fromException(e);
}
ServiceStatus newServiceStatus = healthInfo.isHealthy() ? ServiceStatus.UP : ServiceStatus.DOWN;
final Optional<Instant> newSince;
if (newServiceStatus == serviceStatusInfo.serviceStatus()) {
newSince = serviceStatusInfo.since();
} else {
newSince = Optional.of(now);
Matcher matcher = CONFIG_SERVER_ENDPOINT_PATTERN.matcher(endpoint);
if (matcher.find()) {
logger.info("New health status for " + matcher.group(1) + ": " + healthInfo.toString());
}
}
serviceStatusInfo = new ServiceStatusInfo(newServiceStatus, newSince, Optional.of(now),
healthInfo.getErrorDescription(), Optional.of(endpoint));
}
@Override
public void close() {
healthClient.close();
}
}
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