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// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.config.server.model;
import com.google.common.base.Joiner;
import com.yahoo.cloud.config.LbServicesConfig;
import com.yahoo.config.model.api.ApplicationInfo;
import com.yahoo.config.model.api.HostInfo;
import com.yahoo.config.model.api.ServiceInfo;
import com.yahoo.config.provision.ApplicationId;
import com.yahoo.config.provision.TenantName;
import com.yahoo.config.provision.Zone;
import com.yahoo.vespa.flags.BooleanFlag;
import com.yahoo.vespa.flags.FetchVector;
import com.yahoo.vespa.flags.FlagSource;
import com.yahoo.vespa.flags.Flags;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;
import java.util.Map;
import java.util.Optional;
import java.util.Set;
import java.util.stream.Collectors;
import java.util.stream.Stream;
import static com.yahoo.config.model.api.container.ContainerServiceType.CONTAINER;
import static com.yahoo.config.model.api.container.ContainerServiceType.QRSERVER;
/**
* Produces lb-services cfg
*
* @author Vegard Havdal
*/
public class LbServicesProducer implements LbServicesConfig.Producer {
private final Map<TenantName, Set<ApplicationInfo>> models;
private final Zone zone;
private final BooleanFlag generateNonMtlsEndpoint;
public LbServicesProducer(Map<TenantName, Set<ApplicationInfo>> models, Zone zone, FlagSource flagSource) {
this.models = models;
this.zone = zone;
generateNonMtlsEndpoint = Flags.GENERATE_NON_MTLS_ENDPOINT.bindTo(flagSource);
}
@Override
public void getConfig(LbServicesConfig.Builder builder) {
models.keySet().stream()
.sorted()
.forEach(tenant -> {
builder.tenants(tenant.value(), getTenantConfig(models.get(tenant)));
});
}
private LbServicesConfig.Tenants.Builder getTenantConfig(Set<ApplicationInfo> apps) {
LbServicesConfig.Tenants.Builder tb = new LbServicesConfig.Tenants.Builder();
apps.stream()
.sorted(Comparator.comparing(ApplicationInfo::getApplicationId))
.filter(applicationInfo -> generateRoutingConfig(applicationInfo.getApplicationId()))
.forEach(applicationInfo -> tb.applications(createLbAppIdKey(applicationInfo.getApplicationId()), getAppConfig(applicationInfo)));
return tb;
}
private boolean generateRoutingConfig(ApplicationId applicationId) {
return ( ! applicationId.instance().isTester());
}
private String createLbAppIdKey(ApplicationId applicationId) {
return applicationId.application().value() + ":" + zone.environment().value() + ":" + zone.region().value() + ":" + applicationId.instance().value();
}
private LbServicesConfig.Tenants.Applications.Builder getAppConfig(ApplicationInfo app) {
LbServicesConfig.Tenants.Applications.Builder ab = new LbServicesConfig.Tenants.Applications.Builder();
ab.activeRotation(getActiveRotation(app));
ab.usePowerOfTwoChoicesLb(true);
ab.generateNonMtlsEndpoint(generateNonMtlsEndpoint(app));
app.getModel().getHosts().stream()
.sorted((a, b) -> a.getHostname().compareTo(b.getHostname()))
.forEach(hostInfo -> ab.hosts(hostInfo.getHostname(), getHostsConfig(hostInfo)));
return ab;
}
private boolean getActiveRotation(ApplicationInfo app) {
boolean activeRotation = false;
for (HostInfo hostInfo : app.getModel().getHosts()) {
Optional<ServiceInfo> container = hostInfo.getServices().stream().filter(
serviceInfo -> serviceInfo.getServiceType().equals(CONTAINER.serviceName) ||
serviceInfo.getServiceType().equals(QRSERVER.serviceName)).
findAny();
if (container.isPresent()) {
activeRotation |= Boolean.parseBoolean(container.get().getProperty("activeRotation").orElse("false"));
}
}
return activeRotation;
}
private boolean generateNonMtlsEndpoint(ApplicationInfo app) {
return generateNonMtlsEndpoint.with(FetchVector.Dimension.APPLICATION_ID, app.getApplicationId().serializedForm()).value();
}
private LbServicesConfig.Tenants.Applications.Hosts.Builder getHostsConfig(HostInfo hostInfo) {
LbServicesConfig.Tenants.Applications.Hosts.Builder hb = new LbServicesConfig.Tenants.Applications.Hosts.Builder();
hb.hostname(hostInfo.getHostname());
hostInfo.getServices().forEach(serviceInfo -> hb.services(serviceInfo.getServiceName(), getServiceConfig(serviceInfo)));
return hb;
}
private LbServicesConfig.Tenants.Applications.Hosts.Services.Builder getServiceConfig(ServiceInfo serviceInfo) {
List<String> endpointAliases = Stream.of(serviceInfo.getProperty("endpointaliases").orElse("").split(",")).
filter(prop -> !"".equals(prop)).collect(Collectors.toList());
endpointAliases.addAll(Stream.of(serviceInfo.getProperty("rotations").orElse("").split(",")).filter(prop -> !"".equals(prop)).collect(Collectors.toList()));
Collections.sort(endpointAliases);
LbServicesConfig.Tenants.Applications.Hosts.Services.Builder sb = new LbServicesConfig.Tenants.Applications.Hosts.Services.Builder()
.type(serviceInfo.getServiceType())
.clustertype(serviceInfo.getProperty("clustertype").orElse(""))
.clustername(serviceInfo.getProperty("clustername").orElse(""))
.configId(serviceInfo.getConfigId())
.servicealiases(Stream.of(serviceInfo.getProperty("servicealiases").orElse("").split(",")).
filter(prop -> !"".equals(prop)).sorted((a, b) -> a.compareTo(b)).collect(Collectors.toList()))
.endpointaliases(endpointAliases)
.index(Integer.parseInt(serviceInfo.getProperty("index").orElse("999999")));
serviceInfo.getPorts().forEach(portInfo -> {
LbServicesConfig.Tenants.Applications.Hosts.Services.Ports.Builder pb = new LbServicesConfig.Tenants.Applications.Hosts.Services.Ports.Builder()
.number(portInfo.getPort())
.tags(Joiner.on(" ").join(portInfo.getTags()));
sb.ports(pb);
});
return sb;
}
}
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