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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.config.server.application;
import ai.vespa.util.http.hc5.VespaAsyncHttpClientBuilder;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.yahoo.concurrent.CompletableFutures;
import com.yahoo.concurrent.DaemonThreadFactory;
import com.yahoo.config.model.api.PortInfo;
import com.yahoo.config.model.api.ServiceInfo;
import com.yahoo.vespa.applicationmodel.ClusterId;
import com.yahoo.vespa.config.server.modelfactory.ModelResult;
import org.apache.hc.client5.http.async.methods.SimpleHttpResponse;
import org.apache.hc.client5.http.async.methods.SimpleRequestBuilder;
import org.apache.hc.client5.http.config.RequestConfig;
import org.apache.hc.client5.http.impl.async.CloseableHttpAsyncClient;
import org.apache.hc.core5.concurrent.FutureCallback;
import org.apache.hc.core5.http.HttpStatus;
import org.apache.hc.core5.reactor.IOReactorConfig;
import org.apache.hc.core5.util.Timeout;
import java.io.IOException;
import java.net.URI;
import java.time.Instant;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Optional;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.Executor;
import java.util.concurrent.Executors;
import java.util.stream.Collectors;
import static com.yahoo.config.model.api.container.ContainerServiceType.CLUSTERCONTROLLER_CONTAINER;
import static com.yahoo.yolean.Exceptions.throwUnchecked;
import static com.yahoo.yolean.Exceptions.uncheck;
/**
* Retrieves reindexing status from cluster controllers over HTTP
*
* @author bjorncs
*/
public class DefaultClusterReindexingStatusClient implements ClusterReindexingStatusClient {
private static final ObjectMapper mapper = new ObjectMapper();
private final Executor executor =
Executors.newSingleThreadExecutor(new DaemonThreadFactory("cluster-controller-reindexing-client-"));
private final CloseableHttpAsyncClient httpClient = createHttpClient();
public DefaultClusterReindexingStatusClient() {
httpClient.start();
}
@Override
public Map<String, ClusterReindexing> getReindexingStatus(ModelResult application) throws IOException {
Map<ClusterId, List<ServiceInfo>> clusters = clusterControllerClusters(application);
Map<ClusterId, CompletableFuture<Map<String, ClusterReindexing>>> futureStatusPerCluster = new HashMap<>();
clusters.forEach((clusterId, clusterNodes) -> {
var parallelRequests = clusterNodes.stream()
.map(this::getReindexingStatus)
.toList();
CompletableFuture<Map<String, ClusterReindexing>> combinedRequest = CompletableFutures.firstOf(parallelRequests);
futureStatusPerCluster.put(clusterId, combinedRequest);
});
try {
Map<String, ClusterReindexing> statusPerCluster = new HashMap<>();
futureStatusPerCluster.forEach((clusterId, futureStatus) -> {
statusPerCluster.putAll(futureStatus.join());
});
return Map.copyOf(statusPerCluster);
} catch (Exception e) {
throw new IOException("Failed to get reindexing status from cluster controllers: " + e.getMessage(), e);
}
}
@Override public void close() { uncheck(() -> httpClient.close()); }
private CompletableFuture<Map<String, ClusterReindexing>> getReindexingStatus(ServiceInfo service) {
URI uri = URI.create(String.format("http://%s:%d/reindexing/v1/status", service.getHostName(), getStatePort(service)));
CompletableFuture<SimpleHttpResponse> responsePromise = new CompletableFuture<>();
httpClient.execute(SimpleRequestBuilder.get(uri).build(), new FutureCallback<>() {
@Override public void completed(SimpleHttpResponse result) { responsePromise.complete(result); }
@Override public void failed(Exception ex) { responsePromise.completeExceptionally(ex); }
@Override public void cancelled() { responsePromise.cancel(false); }
});
return responsePromise.handleAsync((response, error) -> {
if (response != null) {
return uncheck(() -> toClusterReindexing(response));
} else {
throw throwUnchecked(new IOException(String.format("For '%s': %s", uri, error.getMessage()), error));
}
}, executor);
}
private static Map<String, ClusterReindexing> toClusterReindexing(SimpleHttpResponse response) throws IOException {
if (response.getCode() != HttpStatus.SC_OK) throw new IOException("Expected status code 200, got " + response.getCode());
if (response.getBody() == null) throw new IOException("Response has no content");
return toClusterReindexing(response.getBodyBytes());
}
private static Map<String, ClusterReindexing> toClusterReindexing(byte[] requestBody) throws IOException {
JsonNode jsonNode = mapper.readTree(requestBody);
Map<String, ClusterReindexing> clusters = new HashMap<>();
for (var clusterNames = jsonNode.get("clusters").fieldNames(); clusterNames.hasNext(); ) {
String clusterName = clusterNames.next();
JsonNode clusterJson = jsonNode.get("clusters").get(clusterName);
Map<String, ClusterReindexing.Status> documentStatuses = new HashMap<>();
for (var documentTypes = clusterJson.get("documentTypes").fieldNames(); documentTypes.hasNext(); ) {
String type = documentTypes.next();
JsonNode statusJson = clusterJson.get("documentTypes").get(type);
Instant startedMillis = Instant.ofEpochMilli(statusJson.get("startedMillis").longValue());
Instant endedMillis = Optional.ofNullable(statusJson.get("endedMillis"))
.map(json -> Instant.ofEpochMilli(json.longValue()))
.orElse(null);
Double progress = Optional.ofNullable(statusJson.get("progress"))
.map(JsonNode::doubleValue)
.orElse(null);
ClusterReindexing.State state = Optional.ofNullable(statusJson.get("state"))
.map(json -> ClusterReindexing.State.fromString(json.textValue()))
.orElse(null);
String message = Optional.ofNullable(statusJson.get("message"))
.map(JsonNode::textValue)
.orElse(null);
documentStatuses.put(type, new ClusterReindexing.Status(startedMillis, endedMillis, state, message, progress));
}
clusters.put(clusterName, new ClusterReindexing(documentStatuses));
}
return Map.copyOf(clusters);
}
private static int getStatePort(ServiceInfo service) {
return service.getPorts().stream()
.filter(port -> port.getTags().contains("state"))
.map(PortInfo::getPort)
.findAny()
.orElseThrow(() -> new IllegalStateException("Cluster controller container has no container port"));
}
private static Map<ClusterId, List<ServiceInfo>> clusterControllerClusters(ModelResult application) {
return application.getModel().getHosts().stream()
.flatMap(host -> host.getServices().stream())
.filter(service -> service.getServiceType().equals(CLUSTERCONTROLLER_CONTAINER.serviceName))
.collect(Collectors.groupingBy(service -> new ClusterId(service.getProperty("clustername").get())));
}
@SuppressWarnings("deprecation")
private static CloseableHttpAsyncClient createHttpClient() {
return VespaAsyncHttpClientBuilder
.create()
.setIOReactorConfig(IOReactorConfig.custom()
.setSoTimeout(Timeout.ofSeconds(2))
.build())
.setDefaultRequestConfig(
RequestConfig.custom()
.setConnectTimeout(Timeout.ofSeconds(2))
.setConnectionRequestTimeout(Timeout.ofSeconds(2))
.setResponseTimeout(Timeout.ofSeconds(4))
.build())
.setUserAgent("cluster-controller-reindexing-client")
.build();
}
}
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