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// Copyright Verizon Media. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.hosted.provision.restapi;
import com.yahoo.config.provision.ApplicationId;
import com.yahoo.config.provision.ClusterMembership;
import com.yahoo.config.provision.DockerImage;
import com.yahoo.config.provision.Flavor;
import com.yahoo.config.provision.NodeType;
import com.yahoo.config.provision.serialization.NetworkPortsSerializer;
import com.yahoo.container.jdisc.HttpRequest;
import com.yahoo.container.jdisc.HttpResponse;
import com.yahoo.slime.Cursor;
import com.yahoo.slime.JsonFormat;
import com.yahoo.slime.Slime;
import com.yahoo.vespa.applicationmodel.HostName;
import com.yahoo.vespa.hosted.provision.Node;
import com.yahoo.vespa.hosted.provision.NodeRepository;
import com.yahoo.vespa.hosted.provision.node.Address;
import com.yahoo.vespa.hosted.provision.node.History;
import com.yahoo.vespa.hosted.provision.node.filter.NodeFilter;
import com.yahoo.vespa.orchestrator.Orchestrator;
import com.yahoo.vespa.orchestrator.status.HostInfo;
import com.yahoo.vespa.orchestrator.status.HostStatus;
import java.io.IOException;
import java.io.OutputStream;
import java.net.URI;
import java.util.List;
import java.util.Optional;
import java.util.Set;
import java.util.function.Function;
/**
* @author bratseth
*/
class NodesResponse extends HttpResponse {
/** The responses this can create */
public enum ResponseType { nodeList, stateList, nodesInStateList, singleNode }
/** The request url minus parameters, with a trailing slash added if missing */
private final String parentUrl;
/** The parent url of nodes */
private final String nodeParentUrl;
private final NodeFilter filter;
private final boolean recursive;
private final Function<HostName, Optional<HostInfo>> orchestrator;
private final NodeRepository nodeRepository;
private final Slime slime;
public NodesResponse(ResponseType responseType, HttpRequest request,
Orchestrator orchestrator, NodeRepository nodeRepository) {
super(200);
this.parentUrl = toParentUrl(request);
this.nodeParentUrl = toNodeParentUrl(request);
filter = NodesV2ApiHandler.toNodeFilter(request);
this.recursive = request.getBooleanProperty("recursive");
this.orchestrator = orchestrator.getHostResolver();
this.nodeRepository = nodeRepository;
slime = new Slime();
Cursor root = slime.setObject();
switch (responseType) {
case nodeList: nodesToSlime(root); break;
case stateList : statesToSlime(root); break;
case nodesInStateList: nodesToSlime(NodeSerializer.stateFrom(lastElement(parentUrl)), root); break;
case singleNode : nodeToSlime(lastElement(parentUrl), root); break;
default: throw new IllegalArgumentException();
}
}
private String toParentUrl(HttpRequest request) {
URI uri = request.getUri();
String parentUrl = uri.getScheme() + "://" + uri.getHost() + ":" + uri.getPort() + uri.getPath();
if ( ! parentUrl.endsWith("/"))
parentUrl = parentUrl + "/";
return parentUrl;
}
private String toNodeParentUrl(HttpRequest request) {
URI uri = request.getUri();
return uri.getScheme() + "://" + uri.getHost() + ":" + uri.getPort() + "/nodes/v2/node/";
}
@Override
public void render(OutputStream stream) throws IOException {
new JsonFormat(true).encode(stream, slime);
}
@Override
public String getContentType() {
return "application/json";
}
private void statesToSlime(Cursor root) {
Cursor states = root.setObject("states");
for (Node.State state : Node.State.values())
toSlime(state, states.setObject(NodeSerializer.toString(state)));
}
private void toSlime(Node.State state, Cursor object) {
object.setString("url", parentUrl + NodeSerializer.toString(state));
if (recursive)
nodesToSlime(state, object);
}
/** Outputs the nodes in the given state to a node array */
private void nodesToSlime(Node.State state, Cursor parentObject) {
Cursor nodeArray = parentObject.setArray("nodes");
for (NodeType type : NodeType.values())
toSlime(nodeRepository.getNodes(type, state), nodeArray);
}
/** Outputs all the nodes to a node array */
private void nodesToSlime(Cursor parentObject) {
Cursor nodeArray = parentObject.setArray("nodes");
toSlime(nodeRepository.getNodes(), nodeArray);
}
private void toSlime(List<Node> nodes, Cursor array) {
for (Node node : nodes) {
if ( ! filter.matches(node)) continue;
toSlime(node, recursive, array.addObject());
}
}
private void nodeToSlime(String hostname, Cursor object) {
Node node = nodeRepository.getNode(hostname).orElseThrow(() ->
new NotFoundException("No node with hostname '" + hostname + "'"));
toSlime(node, true, object);
}
@SuppressWarnings("deprecation")
private void toSlime(Node node, boolean allFields, Cursor object) {
object.setString("url", nodeParentUrl + node.hostname());
if ( ! allFields) return;
object.setString("id", node.hostname());
object.setString("state", NodeSerializer.toString(node.state()));
object.setString("type", NodeSerializer.toString(node.type()));
object.setString("hostname", node.hostname());
if (node.parentHostname().isPresent()) {
object.setString("parentHostname", node.parentHostname().get());
}
object.setString("openStackId", node.id());
object.setString("flavor", node.flavor().name());
node.reservedTo().ifPresent(reservedTo -> object.setString("reservedTo", reservedTo.value()));
node.exclusiveTo().ifPresent(exclusiveTo -> object.setString("exclusiveTo", exclusiveTo.serializedForm()));
if (node.flavor().isConfigured())
object.setDouble("cpuCores", node.flavor().resources().vcpu());
NodeResourcesSerializer.toSlime(node.flavor().resources(), object.setObject("resources"));
if (node.flavor().cost() > 0)
object.setLong("cost", node.flavor().cost());
object.setString("environment", node.flavor().getType().name());
node.allocation().ifPresent(allocation -> {
toSlime(allocation.owner(), object.setObject("owner"));
toSlime(allocation.membership(), object.setObject("membership"));
object.setLong("restartGeneration", allocation.restartGeneration().wanted());
object.setLong("currentRestartGeneration", allocation.restartGeneration().current());
object.setString("wantedDockerImage", allocation.membership().cluster().dockerImage()
.orElseGet(() -> nodeRepository.containerImages().imageFor(node.type()).withTag(allocation.membership().cluster().vespaVersion()).asString()));
object.setString("wantedVespaVersion", allocation.membership().cluster().vespaVersion().toFullString());
NodeResourcesSerializer.toSlime(allocation.requestedResources(), object.setObject("requestedResources"));
allocation.networkPorts().ifPresent(ports -> NetworkPortsSerializer.toSlime(ports, object.setArray("networkPorts")));
orchestrator.apply(new HostName(node.hostname()))
.ifPresent(info -> {
object.setBool("allowedToBeDown", info.status().isSuspended());
// TODO: Remove allowedToBeDown as a special-case of orchestratorHostStatus
if (info.status() != HostStatus.NO_REMARKS) {
object.setString("orchestratorStatus", info.status().asString());
}
info.suspendedSince().ifPresent(since -> object.setLong("suspendedSinceMillis", since.toEpochMilli()));
});
});
object.setLong("rebootGeneration", node.status().reboot().wanted());
object.setLong("currentRebootGeneration", node.status().reboot().current());
node.status().osVersion().current().ifPresent(version -> object.setString("currentOsVersion", version.toFullString()));
node.status().osVersion().wanted().ifPresent(version -> object.setString("wantedOsVersion", version.toFullString()));
node.status().firmwareVerifiedAt().ifPresent(instant -> object.setLong("currentFirmwareCheck", instant.toEpochMilli()));
if (node.type().isHost())
nodeRepository.firmwareChecks().requiredAfter().ifPresent(after -> object.setLong("wantedFirmwareCheck", after.toEpochMilli()));
node.status().vespaVersion().ifPresent(version -> object.setString("vespaVersion", version.toFullString()));
currentDockerImage(node).ifPresent(dockerImage -> object.setString("currentDockerImage", dockerImage.asString()));
object.setLong("failCount", node.status().failCount());
object.setBool("wantToRetire", node.status().wantToRetire());
object.setBool("wantToDeprovision", node.status().wantToDeprovision());
toSlime(node.history(), object.setArray("history"));
ipAddressesToSlime(node.ipConfig().primary(), object.setArray("ipAddresses"));
ipAddressesToSlime(node.ipConfig().pool().getIpSet(), object.setArray("additionalIpAddresses"));
addressesToSlime(node.ipConfig().pool().getAddressList(), object);
node.reports().toSlime(object, "reports");
node.modelName().ifPresent(modelName -> object.setString("modelName", modelName));
node.switchHostname().ifPresent(switchHostname -> object.setString("switchHostname", switchHostname));
}
private void toSlime(ApplicationId id, Cursor object) {
object.setString("tenant", id.tenant().value());
object.setString("application", id.application().value());
object.setString("instance", id.instance().value());
}
private void toSlime(ClusterMembership membership, Cursor object) {
object.setString("clustertype", membership.cluster().type().name());
object.setString("clusterid", membership.cluster().id().value());
object.setString("group", String.valueOf(membership.cluster().group().get().index()));
object.setLong("index", membership.index());
object.setBool("retired", membership.retired());
}
private void toSlime(History history, Cursor array) {
for (History.Event event : history.events()) {
Cursor object = array.addObject();
object.setString("event", event.type().name());
object.setLong("at", event.at().toEpochMilli());
object.setString("agent", event.agent().name());
}
}
// Hack: For non-docker nodes, return current docker image as default prefix + current Vespa version
// TODO: Remove current + wanted docker image from response for non-docker types
private Optional<DockerImage> currentDockerImage(Node node) {
return node.status().containerImage()
.or(() -> Optional.of(node)
.filter(n -> n.flavor().getType() != Flavor.Type.DOCKER_CONTAINER)
.flatMap(n -> n.status().vespaVersion()
.map(version -> nodeRepository.containerImages().imageFor(n.type()).withTag(version))));
}
private void ipAddressesToSlime(Set<String> ipAddresses, Cursor array) {
ipAddresses.forEach(array::addString);
}
private void addressesToSlime(List<Address> addresses, Cursor object) {
if (addresses.isEmpty()) return;
// When/if Address becomes richer: add another field (e.g. "addresses") and expand to array of objects
Cursor addressesArray = object.setArray("additionalHostnames");
addresses.forEach(address -> addressesArray.addString(address.hostname()));
}
private String lastElement(String path) {
if (path.endsWith("/"))
path = path.substring(0, path.length()-1);
int lastSlash = path.lastIndexOf("/");
if (lastSlash < 0) return path;
return path.substring(lastSlash+1);
}
}
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