| /* |
| * Copyright 2020-present Open Networking Foundation |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.onosproject.kubevirtnode.web; |
| |
| import com.fasterxml.jackson.databind.JsonNode; |
| import com.fasterxml.jackson.databind.node.ArrayNode; |
| import com.fasterxml.jackson.databind.node.ObjectNode; |
| import com.google.common.collect.Sets; |
| import org.onosproject.kubevirtnode.api.KubevirtApiConfig; |
| import org.onosproject.kubevirtnode.api.KubevirtApiConfigService; |
| import org.onosproject.kubevirtnode.api.KubevirtNode; |
| import org.onosproject.kubevirtnode.api.KubevirtNodeAdminService; |
| import org.onosproject.kubevirtnode.api.KubevirtNodeService; |
| import org.onosproject.kubevirtnode.api.KubevirtNodeState; |
| import org.onosproject.rest.AbstractWebResource; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import javax.ws.rs.Consumes; |
| import javax.ws.rs.DELETE; |
| import javax.ws.rs.GET; |
| import javax.ws.rs.POST; |
| import javax.ws.rs.PUT; |
| import javax.ws.rs.Path; |
| import javax.ws.rs.PathParam; |
| import javax.ws.rs.Produces; |
| import javax.ws.rs.core.Context; |
| import javax.ws.rs.core.MediaType; |
| import javax.ws.rs.core.Response; |
| import javax.ws.rs.core.UriBuilder; |
| import javax.ws.rs.core.UriInfo; |
| import java.io.InputStream; |
| import java.util.Set; |
| |
| import static com.fasterxml.jackson.databind.SerializationFeature.INDENT_OUTPUT; |
| import static javax.ws.rs.core.Response.created; |
| import static org.onlab.util.Tools.nullIsIllegal; |
| import static org.onlab.util.Tools.readTreeFromStream; |
| import static org.onosproject.kubevirtnode.api.KubevirtNodeState.COMPLETE; |
| import static org.onosproject.kubevirtnode.api.KubevirtNodeState.INIT; |
| import static org.onosproject.kubevirtnode.util.KubevirtNodeUtil.waitFor; |
| |
| /** |
| * Handles REST API call of KubeVirt node config. |
| */ |
| @Path("node") |
| public class KubevirtNodeWebResource extends AbstractWebResource { |
| |
| private final Logger log = LoggerFactory.getLogger(getClass()); |
| |
| private static final String MESSAGE_NODE = "Received node %s request"; |
| private static final String NODES = "nodes"; |
| private static final String CREATE = "CREATE"; |
| private static final String UPDATE = "UPDATE"; |
| private static final String NODE_ID = "NODE_ID"; |
| private static final String REMOVE = "REMOVE"; |
| private static final String QUERY = "QUERY"; |
| private static final String NOT_EXIST = "Not exist"; |
| private static final String STATE = "State"; |
| private static final String API_CONFIG = "apiConfig"; |
| private static final String OK = "ok"; |
| private static final String ERROR = "error"; |
| |
| private static final int SLEEP_S = 1; // we re-check the status on every 1s |
| private static final long TIMEOUT_MS = 15000; |
| |
| private static final String HOST_NAME = "hostname"; |
| private static final String ERROR_MESSAGE = " cannot be null"; |
| |
| @Context |
| private UriInfo uriInfo; |
| |
| /** |
| * Creates a set of KubeVirt nodes' config from the JSON input stream. |
| * |
| * @param input KubeVirt nodes JSON input stream |
| * @return 201 CREATED if the JSON is correct, 400 BAD_REQUEST if the JSON |
| * is malformed |
| * @onos.rsModel KubevirtNode |
| */ |
| @POST |
| @Consumes(MediaType.APPLICATION_JSON) |
| @Produces(MediaType.APPLICATION_JSON) |
| public Response createNodes(InputStream input) { |
| log.trace(String.format(MESSAGE_NODE, CREATE)); |
| |
| KubevirtNodeAdminService service = get(KubevirtNodeAdminService.class); |
| |
| readNodeConfiguration(input).forEach(node -> { |
| KubevirtNode existing = service.node(node.hostname()); |
| if (existing == null) { |
| service.createNode(node); |
| } |
| }); |
| |
| UriBuilder locationBuilder = uriInfo.getBaseUriBuilder() |
| .path(NODES) |
| .path(NODE_ID); |
| |
| return created(locationBuilder.build()).build(); |
| } |
| |
| /** |
| * Updates a set of KubeVirt nodes' config from the JSON input stream. |
| * |
| * @param input KubeVirt nodes JSON input stream |
| * @return 200 OK with the updated KubeVirt node's config, 400 BAD_REQUEST |
| * if the JSON is malformed, and 304 NOT_MODIFIED without the updated config |
| * @onos.rsModel KubevirtNode |
| */ |
| @PUT |
| @Consumes(MediaType.APPLICATION_JSON) |
| @Produces(MediaType.APPLICATION_JSON) |
| public Response updateNodes(InputStream input) { |
| log.trace(String.format(MESSAGE_NODE, UPDATE)); |
| |
| KubevirtNodeAdminService service = get(KubevirtNodeAdminService.class); |
| Set<KubevirtNode> nodes = readNodeConfiguration(input); |
| for (KubevirtNode node: nodes) { |
| KubevirtNode existing = service.node(node.hostname()); |
| if (existing == null) { |
| log.warn("There is no node configuration to update : {}", node.hostname()); |
| return Response.notModified().build(); |
| } else if (!existing.equals(node)) { |
| service.updateNode(node); |
| } |
| } |
| |
| return Response.ok().build(); |
| } |
| |
| /** |
| * Removes a set of KubeVirt nodes' config from the JSON input stream. |
| * |
| * @param hostname host name contained in KubeVirt nodes configuration |
| * @return 204 NO_CONTENT, 400 BAD_REQUEST if the JSON is malformed, and |
| * 304 NOT_MODIFIED without the updated config |
| */ |
| @DELETE |
| @Path("{hostname}") |
| @Consumes(MediaType.APPLICATION_JSON) |
| @Produces(MediaType.APPLICATION_JSON) |
| public Response deleteNode(@PathParam("hostname") String hostname) { |
| log.trace(String.format(MESSAGE_NODE, REMOVE)); |
| |
| KubevirtNodeAdminService service = get(KubevirtNodeAdminService.class); |
| KubevirtNode existing = service.node( |
| nullIsIllegal(hostname, HOST_NAME + ERROR_MESSAGE)); |
| |
| if (existing == null) { |
| log.warn("There is no node configuration to delete : {}", hostname); |
| return Response.notModified().build(); |
| } else { |
| service.removeNode(hostname); |
| } |
| |
| return Response.noContent().build(); |
| } |
| |
| /** |
| * Obtains the state of the KubeVirt node. |
| * |
| * @param hostname hostname of the KubeVirt |
| * @return the state of the KubeVirt node in Json |
| */ |
| @GET |
| @Produces(MediaType.APPLICATION_JSON) |
| @Path("state/{hostname}") |
| public Response stateOfNode(@PathParam("hostname") String hostname) { |
| log.trace(String.format(MESSAGE_NODE, QUERY)); |
| |
| KubevirtNodeAdminService service = get(KubevirtNodeAdminService.class); |
| KubevirtNode node = service.node(hostname); |
| String nodeState = node != null ? node.state().toString() : NOT_EXIST; |
| |
| return ok(mapper().createObjectNode().put(STATE, nodeState)).build(); |
| } |
| |
| /** |
| * Initializes KubeVirt node. |
| * |
| * @param hostname hostname of KubeVirt node |
| * @return 200 OK with init result, 404 not found, 500 server error |
| */ |
| @GET |
| @Produces(MediaType.APPLICATION_JSON) |
| @Path("init/{hostname}") |
| public Response initNode(@PathParam("hostname") String hostname) { |
| log.trace(String.format(MESSAGE_NODE, QUERY)); |
| |
| KubevirtNodeAdminService service = get(KubevirtNodeAdminService.class); |
| KubevirtNode node = service.node(hostname); |
| if (node == null) { |
| log.error("Given node {} does not exist", hostname); |
| return Response.serverError().build(); |
| } |
| KubevirtNode updated = node.updateState(INIT); |
| service.updateNode(updated); |
| return ok(mapper().createObjectNode()).build(); |
| } |
| |
| /** |
| * Initializes all KubeVirt nodes. |
| * |
| * @return 200 OK with init result, 500 server error |
| */ |
| @GET |
| @Produces(MediaType.APPLICATION_JSON) |
| @Path("init/all") |
| public Response initAllNodes() { |
| log.trace(String.format(MESSAGE_NODE, QUERY)); |
| |
| KubevirtNodeAdminService service = get(KubevirtNodeAdminService.class); |
| |
| service.nodes() |
| .forEach(n -> { |
| KubevirtNode updated = n.updateState(INIT); |
| service.updateNode(updated); |
| }); |
| |
| return ok(mapper().createObjectNode()).build(); |
| } |
| |
| /** |
| * Initializes KubeVirt nodes which are in the stats other than COMPLETE. |
| * |
| * @return 200 OK with init result, 500 server error |
| */ |
| @GET |
| @Produces(MediaType.APPLICATION_JSON) |
| @Path("init/incomplete") |
| public Response initIncompleteNodes() { |
| log.trace(String.format(MESSAGE_NODE, QUERY)); |
| |
| KubevirtNodeAdminService service = get(KubevirtNodeAdminService.class); |
| service.nodes().stream() |
| .filter(n -> n.state() != KubevirtNodeState.COMPLETE) |
| .forEach(n -> { |
| KubevirtNode updated = n.updateState(INIT); |
| service.updateNode(updated); |
| }); |
| |
| return ok(mapper().createObjectNode()).build(); |
| } |
| |
| /** |
| * Synchronizes the flow rules. |
| * |
| * @return 200 OK with sync result, 404 not found |
| */ |
| @GET |
| @Produces(MediaType.APPLICATION_JSON) |
| @Path("sync/rules") |
| public Response syncRules() { |
| |
| KubevirtNodeAdminService service = get(KubevirtNodeAdminService.class); |
| |
| service.completeNodes().forEach(node -> syncRulesBase(service, node)); |
| return ok(mapper().createObjectNode()).build(); |
| } |
| |
| /** |
| * Returns the health check result. |
| * |
| * @return 200 OK with health check result, 404 not found |
| */ |
| @GET |
| @Produces(MediaType.APPLICATION_JSON) |
| @Path("healthz") |
| public Response healthz() { |
| KubevirtApiConfigService configService = get(KubevirtApiConfigService.class); |
| KubevirtNodeService nodeService = get(KubevirtNodeService.class); |
| |
| // TODO: we need to add more health check items |
| boolean allInit = true; |
| KubevirtApiConfig config = configService.apiConfig(); |
| |
| if (nodeService.nodes().size() == 0) { |
| allInit = false; |
| } else { |
| for (KubevirtNode node : nodeService.nodes()) { |
| if (node.state() != INIT) { |
| allInit = false; |
| } |
| } |
| } |
| |
| String result = ERROR; |
| if (config != null && !allInit) { |
| result = OK; |
| } |
| |
| ObjectNode jsonResult = mapper().createObjectNode(); |
| jsonResult.put(API_CONFIG, result); |
| return ok(jsonResult).build(); |
| } |
| |
| private void syncRulesBase(KubevirtNodeAdminService service, KubevirtNode node) { |
| KubevirtNode updated = node.updateState(INIT); |
| service.updateNode(updated); |
| |
| boolean result = true; |
| long timeoutExpiredMs = System.currentTimeMillis() + TIMEOUT_MS; |
| |
| while (service.node(node.hostname()).state() != COMPLETE) { |
| long waitMs = timeoutExpiredMs - System.currentTimeMillis(); |
| |
| waitFor(SLEEP_S); |
| |
| if (waitMs <= 0) { |
| result = false; |
| break; |
| } |
| } |
| |
| if (result) { |
| log.info("Successfully synchronize flow rules for node {}!", node.hostname()); |
| } else { |
| log.warn("Failed to synchronize flow rules for node {}.", node.hostname()); |
| } |
| } |
| |
| private Set<KubevirtNode> readNodeConfiguration(InputStream input) { |
| Set<KubevirtNode> nodeSet = Sets.newHashSet(); |
| try { |
| JsonNode jsonTree = readTreeFromStream(mapper().enable(INDENT_OUTPUT), input); |
| ArrayNode nodes = (ArrayNode) jsonTree.path(NODES); |
| nodes.forEach(node -> { |
| try { |
| ObjectNode objectNode = node.deepCopy(); |
| KubevirtNode kubevirtNode = |
| codec(KubevirtNode.class).decode(objectNode, this); |
| nodeSet.add(kubevirtNode); |
| } catch (Exception e) { |
| log.error("Exception occurred due to {}", e); |
| throw new IllegalArgumentException(); |
| } |
| }); |
| } catch (Exception e) { |
| throw new IllegalArgumentException(e); |
| } |
| |
| return nodeSet; |
| } |
| } |