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* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
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package org.elasticsearch.plugin.discovery.azure.classic;
import org.apache.logging.log4j.Logger;
import org.elasticsearch.cloud.azure.classic.management.AzureComputeService;
import org.elasticsearch.cloud.azure.classic.management.AzureComputeServiceImpl;
import org.elasticsearch.cluster.routing.allocation.AllocationService;
import org.elasticsearch.cluster.service.ClusterApplier;
import org.elasticsearch.cluster.service.MasterService;
import org.elasticsearch.common.io.stream.NamedWriteableRegistry;
import org.elasticsearch.common.logging.DeprecationLogger;
import org.elasticsearch.common.logging.Loggers;
import org.elasticsearch.common.network.NetworkService;
import org.elasticsearch.common.settings.ClusterSettings;
import org.elasticsearch.common.settings.Setting;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.discovery.Discovery;
import org.elasticsearch.discovery.DiscoveryModule;
import org.elasticsearch.discovery.azure.classic.AzureUnicastHostsProvider;
import org.elasticsearch.discovery.zen.UnicastHostsProvider;
import org.elasticsearch.discovery.zen.ZenDiscovery;
import org.elasticsearch.plugins.DiscoveryPlugin;
import org.elasticsearch.plugins.Plugin;
import org.elasticsearch.threadpool.ThreadPool;
import org.elasticsearch.transport.TransportService;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import java.util.function.Supplier;
public class AzureDiscoveryPlugin extends Plugin implements DiscoveryPlugin {
public static final String AZURE = "azure";
protected final Settings settings;
private static final Logger logger = Loggers.getLogger(AzureDiscoveryPlugin.class);
private static final DeprecationLogger deprecationLogger = new DeprecationLogger(logger);
public AzureDiscoveryPlugin(Settings settings) {
this.settings = settings;
deprecationLogger.deprecated("azure classic discovery plugin is deprecated. Use azure arm discovery plugin instead");
logger.trace("starting azure classic discovery plugin...");
}
// overrideable for tests
protected AzureComputeService createComputeService() {
return new AzureComputeServiceImpl(settings);
}
@Override
public Map<String, Supplier<UnicastHostsProvider>> getZenHostsProviders(TransportService transportService,
NetworkService networkService) {
return Collections.singletonMap(AZURE,
() -> new AzureUnicastHostsProvider(settings, createComputeService(), transportService, networkService));
}
@Override
public Map<String, Supplier<Discovery>> getDiscoveryTypes(ThreadPool threadPool, TransportService transportService,
NamedWriteableRegistry namedWriteableRegistry,
MasterService masterService, ClusterApplier clusterApplier,
ClusterSettings clusterSettings, UnicastHostsProvider hostsProvider,
AllocationService allocationService) {
// this is for backcompat with pre 5.1, where users would set discovery.type to use ec2 hosts provider
return Collections.singletonMap(AZURE, () ->
new ZenDiscovery(settings, threadPool, transportService, namedWriteableRegistry, masterService, clusterApplier,
clusterSettings, hostsProvider, allocationService));
}
@Override
public List<Setting<?>> getSettings() {
return Arrays.asList(AzureComputeService.Discovery.REFRESH_SETTING,
AzureComputeService.Management.KEYSTORE_PASSWORD_SETTING,
AzureComputeService.Management.KEYSTORE_PATH_SETTING,
AzureComputeService.Management.KEYSTORE_TYPE_SETTING,
AzureComputeService.Management.SUBSCRIPTION_ID_SETTING,
AzureComputeService.Management.SERVICE_NAME_SETTING,
AzureComputeService.Discovery.HOST_TYPE_SETTING,
AzureComputeService.Discovery.DEPLOYMENT_NAME_SETTING,
AzureComputeService.Discovery.DEPLOYMENT_SLOT_SETTING,
AzureComputeService.Discovery.ENDPOINT_NAME_SETTING);
}
@Override
public Settings additionalSettings() {
// For 5.0, the hosts provider was "zen", but this was before the discovery.zen.hosts_provider
// setting existed. This check looks for the legacy setting, and sets hosts provider if set
String discoveryType = DiscoveryModule.DISCOVERY_TYPE_SETTING.get(settings);
if (discoveryType.equals(AZURE)) {
deprecationLogger.deprecated("using [" + DiscoveryModule.DISCOVERY_TYPE_SETTING.getKey() +
"] to set hosts provider is deprecated; " +
"set \"" + DiscoveryModule.DISCOVERY_HOSTS_PROVIDER_SETTING.getKey() + ": " + AZURE + "\" instead");
if (DiscoveryModule.DISCOVERY_HOSTS_PROVIDER_SETTING.exists(settings) == false) {
return Settings.builder().put(DiscoveryModule.DISCOVERY_HOSTS_PROVIDER_SETTING.getKey(), AZURE).build();
}
}
return Settings.EMPTY;
}
}