appc-adapters/appc-iaas-adapter/appc-iaas-adapter-bundle/src/main/java/org/onap/appc/adapter/iaas/provider/operation/impl/EvacuateServer.java

   1 /*-
   2  * ============LICENSE_START=======================================================
   3  * ONAP : APPC
   4  * ================================================================================
   5  * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
   6  * ================================================================================
   7  * Copyright (C) 2017 Amdocs
   8  * =============================================================================
   9  * Licensed under the Apache License, Version 2.0 (the "License");
  10  * you may not use this file except in compliance with the License.
  11  * You may obtain a copy of the License at
  12  *
  13  *      http://www.apache.org/licenses/LICENSE-2.0
  14  *
  15  * Unless required by applicable law or agreed to in writing, software
  16  * distributed under the License is distributed on an "AS IS" BASIS,
  17  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  18  * See the License for the specific language governing permissions and
  19  * limitations under the License.
  20  *
  21  * ECOMP is a trademark and service mark of AT&T Intellectual Property.
  22  * ============LICENSE_END=========================================================
  23  */
  24
  25 package org.onap.appc.adapter.iaas.provider.operation.impl;
  26
  27 import org.onap.appc.Constants;
  28 import org.onap.appc.adapter.iaas.ProviderAdapter;
  29 import org.onap.appc.adapter.iaas.impl.IdentityURL;
  30 import org.onap.appc.adapter.iaas.impl.ProviderAdapterImpl;
  31 import org.onap.appc.adapter.iaas.impl.RequestContext;
  32 import org.onap.appc.adapter.iaas.impl.RequestFailedException;
  33 import org.onap.appc.adapter.iaas.impl.VMURL;
  34 import org.onap.appc.adapter.iaas.provider.operation.common.enums.Operation;
  35 import org.onap.appc.adapter.iaas.provider.operation.impl.base.ProviderServerOperation;
  36 import org.onap.appc.configuration.Configuration;
  37 import org.onap.appc.configuration.ConfigurationFactory;
  38 import org.onap.appc.exceptions.APPCException;
  39 import org.onap.appc.i18n.Msg;
  40 import com.att.cdp.exceptions.ContextConnectionException;
  41 import com.att.cdp.exceptions.ResourceNotFoundException;
  42 import com.att.cdp.exceptions.ZoneException;
  43 import com.att.cdp.zones.ComputeService;
  44 import com.att.cdp.zones.Context;
  45 import com.att.cdp.zones.Provider;
  46 import com.att.cdp.zones.model.Hypervisor;
  47 import com.att.cdp.zones.model.Hypervisor.Status;
  48 import com.att.cdp.zones.model.Hypervisor.State;
  49 import com.att.cdp.zones.model.Image;
  50 import com.att.cdp.zones.model.ModelObject;
  51 import com.att.cdp.zones.model.Server;
  52 import com.att.eelf.configuration.EELFLogger;
  53 import com.att.eelf.configuration.EELFManager;
  54 import com.att.eelf.i18n.EELFResourceManager;
  55 import org.onap.ccsdk.sli.core.sli.SvcLogicContext;
  56 import org.glassfish.grizzly.http.util.HttpStatus;
  57 import org.slf4j.MDC;
  58
  59 import java.io.IOException;
  60 import java.text.DateFormat;
  61 import java.text.SimpleDateFormat;
  62 import java.util.Arrays;
  63 import java.util.Date;
  64 import java.util.List;
  65 import java.util.Map;
  66 import java.util.TimeZone;
  67 import static org.onap.appc.adapter.utils.Constants.ADAPTER_NAME;
  68
  69 public class EvacuateServer extends ProviderServerOperation {
  70
  71     private static final String EVACUATE_STATUS = "EVACUATE_STATUS";
  72     private static final String EVACUATE_SERVER = "Evacuate Server";
  73
  74     private static final EELFLogger logger = EELFManager.getInstance().getLogger(EvacuateServer.class);
  75     private static EELFLogger metricsLogger = EELFManager.getInstance().getMetricsLogger();
  76
  77     private static final Configuration configuration = ConfigurationFactory.getConfiguration();
  78     private ProviderAdapterImpl paImpl = null;
  79
  80     private void evacuateServer(RequestContext rc, @SuppressWarnings("unused") Server server, String targetHost)
  81             throws ZoneException, RequestFailedException {
  82
  83         Context ctx = server.getContext();
  84         Provider provider = ctx.getProvider();
  85         ComputeService service = ctx.getComputeService();
  86
  87         /*
  88          * Pending is a bit of a special case. If we find the server is in a pending state, then the provider is in the
  89          * process of changing state of the server. So, lets try to wait a little bit and see if the state settles down
  90          * to one we can deal with. If not, then we have to fail the request.
  91          */
  92         try {
  93             if (server.getStatus().equals(Server.Status.PENDING)) {
  94                 waitForStateChange(rc, server, Server.Status.READY, Server.Status.RUNNING, Server.Status.ERROR,
  95                         Server.Status.SUSPENDED, Server.Status.PAUSED);
  96             }
  97         } catch (RequestFailedException e) {
  98             // evacuate is a special case. If the server is still in a Pending state, we want to
  99             // continue with evacuate
 100             logger.info("Evacuate server - ignore RequestFailedException from waitForStateChange() ...");
 101         }
 102
 103         setTimeForMetricsLogger();
 104
 105         String msg;
 106         try {
 107             while (rc.attempt()) {
 108                 try {
 109                     logger.debug("Calling CDP moveServer - server id = " + server.getId());
 110                     service.moveServer(server.getId(), targetHost);
 111                     // Wait for completion, expecting the server to go to a non pending state
 112                     waitForStateChange(rc, server, Server.Status.READY, Server.Status.RUNNING, Server.Status.ERROR,
 113                             Server.Status.SUSPENDED, Server.Status.PAUSED);
 114                     break;
 115                 } catch (ContextConnectionException e) {
 116                     msg = EELFResourceManager.format(Msg.CONNECTION_FAILED_RETRY, provider.getName(), service.getURL(),
 117                             ctx.getTenant().getName(), ctx.getTenant().getId(), e.getMessage(),
 118                             Long.toString(rc.getRetryDelay()), Integer.toString(rc.getAttempts()),
 119                             Integer.toString(rc.getRetryLimit()));
 120                     logger.error(msg, e);
 121                     metricsLogger.error(msg, e);
 122                     rc.delay();
 123                 }
 124             }
 125
 126         } catch (ZoneException e) {
 127             msg = EELFResourceManager.format(Msg.EVACUATE_SERVER_FAILED, server.getName(), server.getId(),
 128                     e.getMessage());
 129             logger.error(msg);
 130             metricsLogger.error(msg);
 131             throw new RequestFailedException(EVACUATE_SERVER, msg, HttpStatus.BAD_GATEWAY_502, server);
 132         }
 133
 134         if (rc.isFailed()) {
 135             msg = EELFResourceManager.format(Msg.CONNECTION_FAILED, provider.getName(), service.getURL());
 136             logger.error(msg);
 137             metricsLogger.error(msg);
 138             throw new RequestFailedException(EVACUATE_SERVER, msg, HttpStatus.BAD_GATEWAY_502, server);
 139         }
 140         rc.reset();
 141     }
 142
 143
 144     /**
 145      * @see org.onap.appc.adapter.iaas.ProviderAdapter#evacuateServer(java.util.Map,
 146      *      org.onap.ccsdk.sli.core.sli.SvcLogicContext)
 147      */
 148     private Server evacuateServer(Map<String, String> params, SvcLogicContext ctx) throws APPCException {
 149         Server server = null;
 150         RequestContext rc = new RequestContext(ctx);
 151         rc.isAlive();
 152
 153         setTimeForMetricsLogger();
 154
 155         String msg;
 156         ctx.setAttribute(EVACUATE_STATUS, "ERROR");
 157         try {
 158             validateParametersExist(params, ProviderAdapter.PROPERTY_INSTANCE_URL,
 159                     ProviderAdapter.PROPERTY_PROVIDER_NAME);
 160
 161             String appName = configuration.getProperty(Constants.PROPERTY_APPLICATION_NAME);
 162             String vmUrl = params.get(ProviderAdapter.PROPERTY_INSTANCE_URL);
 163             VMURL vm = VMURL.parseURL(vmUrl);
 164
 165             if (validateVM(rc, appName, vmUrl, vm)) {
 166                 return null;
 167             }
 168
 169             IdentityURL ident = IdentityURL.parseURL(params.get(ProviderAdapter.PROPERTY_IDENTITY_URL));
 170             String identStr = (ident == null) ? null : ident.toString();
 171
 172             // retrieve the optional parameters
 173             String rebuildVm = params.get(ProviderAdapter.PROPERTY_REBUILD_VM);
 174             String targetHostId = params.get(ProviderAdapter.PROPERTY_TARGETHOST_ID);
 175
 176             Context context = null;
 177             String tenantName = "Unknown";//to be used also in case of exception
 178             try {
 179                 context = getContext(rc, vmUrl, identStr);
 180                 if (context != null) {
 181                     tenantName = context.getTenantName();//this varaible also is used in case of exception
 182                     server = lookupServer(rc, context, vm.getServerId());
 183                     logger.debug(Msg.SERVER_FOUND, vmUrl, tenantName, server.getStatus().toString());
 184
 185                     // check target host status
 186                     if (isComputeNodeDown(context, targetHostId)) {
 187                         msg = EELFResourceManager.format(Msg.EVACUATE_SERVER_FAILED, server.getName(), server.getId(),
 188                                 "Target host " + targetHostId + " status is not UP/ENABLED");
 189                         logger.error(msg);
 190                         metricsLogger.error(msg);
 191                         throw new RequestFailedException(EVACUATE_SERVER, msg, HttpStatus.BAD_REQUEST_400, server);
 192                     }
 193
 194                     // save hypervisor name before evacuate
 195                     String hypervisor = server.getHypervisor().getHostName();
 196
 197                     evacuateServer(rc, server, targetHostId);
 198
 199                     server.refreshAll();
 200                     String hypervisorAfterEvacuate = server.getHypervisor().getHostName();
 201                     logger.debug("Hostname before evacuate: " + hypervisor + ", After evacuate: " + hypervisorAfterEvacuate);
 202
 203                     // check hypervisor host name after evacuate. If it is unchanged, the evacuate
 204                     // failed.
 205                     if (hypervisor != null && hypervisor.equals(hypervisorAfterEvacuate)) {
 206                         msg = EELFResourceManager.format(Msg.EVACUATE_SERVER_FAILED, server.getName(), server.getId(),
 207                                 "Hypervisor host " + hypervisor
 208                                         + " after evacuate is the same as before evacuate. Provider (ex. Openstack) recovery actions may be needed.");
 209                         logger.error(msg);
 210                         metricsLogger.error(msg);
 211                         throw new RequestFailedException(EVACUATE_SERVER, msg, HttpStatus.INTERNAL_SERVER_ERROR_500, server);
 212                     }
 213
 214                     // check VM status after evacuate
 215                     if (server.getStatus() == Server.Status.ERROR) {
 216                         msg = EELFResourceManager.format(Msg.EVACUATE_SERVER_FAILED, server.getName(), server.getId(),
 217                                 "VM is in ERROR state after evacuate. Provider (ex. Openstack) recovery actions may be needed.");
 218                         logger.error(msg);
 219                         metricsLogger.error(msg);
 220                         throw new RequestFailedException(EVACUATE_SERVER, msg, HttpStatus.INTERNAL_SERVER_ERROR_500, server);
 221                     }
 222
 223                     context.close();
 224                     doSuccess(rc);
 225                     ctx.setAttribute(EVACUATE_STATUS, "SUCCESS");
 226
 227                     // If a snapshot exists, do a rebuild to apply the latest snapshot to the evacuated server.
 228                     // This is the default behavior unless the optional parameter is set to FALSE.
 229                     if (rebuildVm == null || !"false".equalsIgnoreCase(rebuildVm)) {
 230                         List<Image> snapshots = server.getSnapshots();
 231                         if (snapshots == null || snapshots.isEmpty()) {
 232                             logger.debug("No snapshots available - skipping rebuild after evacuate");
 233                         } else if (paImpl != null) {
 234                             logger.debug("Executing a rebuild after evacuate");
 235                             paImpl.rebuildServer(params, ctx);
 236                             // Check error code for rebuild errors. Evacuate had set it to 200 after
 237                             // a successful evacuate. Rebuild updates the error code.
 238                             String rebuildErrorCode = ctx.getAttribute(org.onap.appc.Constants.ATTRIBUTE_ERROR_CODE);
 239                             if (rebuildErrorCode != null) {
 240                                 try {
 241                                     int errorCode = Integer.parseInt(rebuildErrorCode);
 242                                     if (errorCode != HttpStatus.OK_200.getStatusCode()) {
 243                                         logger.debug("Rebuild after evacuate failed - error code=" + errorCode
 244                                                 + ", message=" + ctx.getAttribute(org.onap.appc.Constants.ATTRIBUTE_ERROR_MESSAGE));
 245                                         msg = EELFResourceManager.format(Msg.EVACUATE_SERVER_REBUILD_FAILED,
 246                                                 server.getName(), hypervisor, hypervisorAfterEvacuate,
 247                                                 ctx.getAttribute(org.onap.appc.Constants.ATTRIBUTE_ERROR_MESSAGE));
 248                                         logger.error(msg);
 249                                         metricsLogger.error(msg);
 250                                         ctx.setAttribute(EVACUATE_STATUS, "ERROR");
 251                                         // update error message while keeping the error code the
 252                                         // same as before
 253                                         doFailure(rc, HttpStatus.getHttpStatus(errorCode), msg);
 254                                     }
 255                                 } catch (NumberFormatException e) {
 256                                     // ignore
 257                                 }
 258                             }
 259                         }
 260                     }
 261
 262                 }
 263             } catch (ResourceNotFoundException e) {
 264                 msg = EELFResourceManager.format(Msg.SERVER_NOT_FOUND, e, vmUrl);
 265                 logger.error(msg);
 266                 metricsLogger.error(msg);
 267                 doFailure(rc, HttpStatus.NOT_FOUND_404, msg);
 268             } catch (RequestFailedException e) {
 269                 doFailure(rc, e.getStatus(), e.getMessage());
 270             } catch (IOException | ZoneException e1) {
 271                 msg = EELFResourceManager.format(Msg.SERVER_OPERATION_EXCEPTION, e1, e1.getClass().getSimpleName(),
 272                         Operation.EVACUATE_SERVICE.toString(), vmUrl, tenantName);
 273                 logger.error(msg, e1);
 274                 metricsLogger.error(msg, e1);
 275                 doFailure(rc, HttpStatus.INTERNAL_SERVER_ERROR_500, msg);
 276             }
 277         } catch (RequestFailedException e) {
 278             msg = EELFResourceManager.format(Msg.EVACUATE_SERVER_FAILED, "n/a", "n/a", e.getMessage());
 279             logger.error(msg);
 280             metricsLogger.error(msg);
 281             doFailure(rc, e.getStatus(), e.getMessage());
 282         }
 283
 284         return server;
 285     }
 286
 287     /**
 288      * Check if a Compute node is down.
 289      *
 290      * This method attempts to find a given host in the list of hypervisors for a given context. The only case where a
 291      * node is considered down is if a matching hypervisor is found and it's state and status are not UP/ENABLED.
 292      *
 293      * @param context The current context
 294      *
 295      * @param host The host name (short or fully qualified) of a compute node
 296      *
 297      * @return true if the node is determined as down, false for all other cases
 298      */
 299     private boolean isComputeNodeDown(Context context, String host) throws ZoneException {
 300         ComputeService service = context.getComputeService();
 301         boolean nodeDown = false;
 302
 303         if (host != null && ! host.isEmpty()) {
 304             List<Hypervisor> hypervisors = service.getHypervisors();
 305             logger.debug("List of Hypervisors retrieved: " + Arrays.toString(hypervisors.toArray()));
 306             for (Hypervisor hv : hypervisors) {
 307                 if (isHostMatchesHypervisor(host, hv)) {
 308                     State hstate = hv.getState();
 309                     Status hstatus = hv.getStatus();
 310                     logger.debug("Host matching hypervisor: " + hv.getHostName() + ", State/Status: " + hstate.toString()
 311                             + "/" + hstatus.toString());
 312                     if (hstate != State.UP || hstatus != Status.ENABLED) {
 313                         nodeDown = true;
 314                     }
 315                 }
 316             }
 317         }
 318         return nodeDown;
 319     }
 320
 321     private boolean isHostMatchesHypervisor(String host, Hypervisor hypervisor) {
 322         return hypervisor.getHostName().startsWith(host);
 323     }
 324
 325     @Override
 326     protected ModelObject executeProviderOperation(Map<String, String> params, SvcLogicContext context)
 327             throws APPCException {
 328         setMDC(Operation.EVACUATE_SERVICE.toString(), "App-C IaaS Adapter:Evacuate", ADAPTER_NAME);
 329         logOperation(Msg.EVACUATING_SERVER, params, context);
 330
 331         setTimeForMetricsLogger();
 332
 333         metricsLogger.info("Executing Provider Operation: Evacuate");
 334         return evacuateServer(params, context);
 335     }
 336
 337     private void setTimeForMetricsLogger() {
 338         long startTime = System.currentTimeMillis();
 339         TimeZone tz = TimeZone.getTimeZone("UTC");
 340         DateFormat df = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ssZ");
 341         df.setTimeZone(tz);
 342         long endTime = System.currentTimeMillis();
 343         long duration = endTime - startTime;
 344         String durationStr = String.valueOf(duration);
 345         String endTimeStrUTC = df.format(new Date());
 346         MDC.put("EndTimestamp", endTimeStrUTC);
 347         MDC.put("ElapsedTime", durationStr);
 348         MDC.put("TargetEntity", "cdp");
 349         MDC.put("TargetServiceName", "evacuate server");
 350         MDC.put("ClassName", "org.onap.appc.adapter.iaas.provider.operation.impl.EvacuateServer");
 351     }
 352
 353     public void setProvideAdapterRef(ProviderAdapterImpl pai) {
 354         paImpl = pai;
 355     }
 356 }