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/*-
* ============LICENSE_START=======================================================
* ONAP : APPC
* ================================================================================
* Copyright (C) 2017-2018 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* Copyright (C) 2017 Amdocs
* =============================================================================
* 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.
*
* ============LICENSE_END=========================================================
*/
package org.onap.appc.adapter.iaas.provider.operation.impl;
import com.att.cdp.exceptions.ContextConnectionException;
import com.att.cdp.exceptions.ResourceNotFoundException;
import com.att.cdp.exceptions.ZoneException;
import com.att.cdp.zones.ComputeService;
import com.att.cdp.zones.Context;
import com.att.cdp.zones.Provider;
import com.att.cdp.zones.model.ModelObject;
import com.att.cdp.zones.model.Server;
import com.att.eelf.configuration.EELFLogger;
import com.att.eelf.configuration.EELFManager;
import com.att.eelf.i18n.EELFResourceManager;
import org.glassfish.grizzly.http.util.HttpStatus;
import org.onap.appc.Constants;
import org.onap.appc.adapter.iaas.ProviderAdapter;
import org.onap.appc.adapter.iaas.impl.IdentityURL;
import org.onap.appc.adapter.iaas.impl.RequestContext;
import org.onap.appc.adapter.iaas.impl.RequestFailedException;
import org.onap.appc.adapter.iaas.impl.VMURL;
import org.onap.appc.adapter.iaas.provider.operation.common.enums.Outcome;
import org.onap.appc.adapter.iaas.provider.operation.impl.base.ProviderServerOperation;
import org.onap.appc.exceptions.UnknownProviderException;
import org.onap.appc.i18n.Msg;
import org.onap.ccsdk.sli.core.sli.SvcLogicContext;
import java.util.Map;
import static org.onap.appc.adapter.iaas.provider.operation.common.enums.Operation.RESTART_SERVICE;
import static org.onap.appc.adapter.iaas.provider.operation.common.enums.Operation.TERMINATE_SERVICE;
import static org.onap.appc.adapter.utils.Constants.ADAPTER_NAME;
public class TerminateServer extends ProviderServerOperation {
private static final EELFLogger logger = EELFManager.getInstance().getLogger(EvacuateServer.class);
/**
* Start the server and wait for it to enter a running state
*
* @param rc The request context that manages the state and recovery of the request for the life of its processing.
* @param server The server to be started
* @throws ZoneException when error occurs
* @throws RequestFailedException when request failed
*/
@SuppressWarnings("nls")
private void deleteServer(RequestContext rc, Server server) throws ZoneException, RequestFailedException {
String msg;
Context context = server.getContext();
Provider provider = context.getProvider();
ComputeService service = context.getComputeService();
while (rc.attempt()) {
try {
logger.info("deleting SERVER");
server.delete();
break;
} catch (ContextConnectionException e) {
msg = EELFResourceManager.format(Msg.CONNECTION_FAILED_RETRY, provider.getName(), service.getURL(),
context.getTenant().getName(), context.getTenant().getId(), e.getMessage(),
Long.toString(rc.getRetryDelay()), Integer.toString(rc.getAttempts()),
Integer.toString(rc.getRetryLimit()));
logger.error(msg, e);
rc.delay();
}
}
if (rc.isFailed()) {
msg = EELFResourceManager.format(Msg.CONNECTION_FAILED, provider.getName(), service.getURL());
logger.error(msg);
throw new RequestFailedException("Delete Server", msg, HttpStatus.BAD_GATEWAY_502, server);
}
rc.reset();
}
/**
* This method handles the case of restarting a server once we have found the server and have obtained the abstract
* representation of the server via the context (i.e., the "Server" object from the CDP-Zones abstraction).
*
* @param rc The request context that manages the state and recovery of the request for the life of its processing.
* @param server The server object representing the server we want to operate on
* @throws ZoneException when error occurs
*/
@SuppressWarnings("nls")
private void terminateServer(RequestContext rc, Server server) throws ZoneException, RequestFailedException {
/*
* Pending is a bit of a special case. If we find the server is in a pending state, then the provider is in the
* process of changing state of the server. So, lets try to wait a little bit and see if the state settles down
* to one we can deal with. If not, then we have to fail the request.
*/
String msg;
if (server.getStatus().equals(Server.Status.PENDING)) {
waitForStateChange(rc, server, Server.Status.READY, Server.Status.RUNNING, Server.Status.ERROR,
Server.Status.SUSPENDED, Server.Status.PAUSED);
}
/*
* We determine what to do based on the current state of the server
*/
switch (server.getStatus()) {
case DELETED:
// Nothing to do, the server is gone
msg = EELFResourceManager.format(Msg.SERVER_DELETED, server.getName(), server.getId(),
server.getTenantId(), "restarted");
generateEvent(rc, false, msg);
logger.error(msg);
break;
case RUNNING:
// Attempt to stop and start the server
logger.info("stopping SERVER");
stopServer(rc, server);
deleteServer(rc, server);
logger.info("after delete SERVER");
generateEvent(rc, true, Outcome.SUCCESS.toString());
break;
case ERROR:
case READY:
case PAUSED:
case SUSPENDED:
// Attempt to delete the suspended server
deleteServer(rc, server);
generateEvent(rc, true, Outcome.SUCCESS.toString());
break;
default:
// Hmmm, unknown status, should never occur
msg = EELFResourceManager.format(Msg.UNKNOWN_SERVER_STATE, server.getName(), server.getId(),
server.getTenantId(), server.getStatus().name());
generateEvent(rc, false, msg);
logger.error(msg);
break;
}
}
/**
* This method is used to delete an existing virtual machine given the fully qualified URL of the machine.
* <p>
* The fully qualified URL contains enough information to locate the appropriate server. The URL is of the form
*
* <pre>
* [scheme]://[host[:port]] / [path] / [tenant_id] / servers / [vm_id]
* </pre>
*
* Where the various parts of the URL can be parsed and extracted and used to locate the appropriate service in the
* provider service catalog. This then allows us to open a context using the CDP abstraction, obtain the server by
* its UUID, and then perform the restart.
* </p>
*
* @throws UnknownProviderException If the provider cannot be found
* @throws IllegalArgumentException if the expected argument(s) are not defined or are invalid
* @see org.onap.appc.adapter.iaas.ProviderAdapter#terminateServer(java.util.Map,
* org.onap.ccsdk.sli.core.sli.SvcLogicContext)
*/
@SuppressWarnings("nls")
public Server terminateServer(Map<String, String> params, SvcLogicContext ctx)
throws UnknownProviderException, IllegalArgumentException {
Server server = null;
RequestContext rc = new RequestContext(ctx);
rc.isAlive();
String appName = configuration.getProperty(Constants.PROPERTY_APPLICATION_NAME);
try {
validateParametersExist(params, ProviderAdapter.PROPERTY_INSTANCE_URL,
ProviderAdapter.PROPERTY_PROVIDER_NAME);
String vm_url = params.get(ProviderAdapter.PROPERTY_INSTANCE_URL);
ctx.setAttribute("TERMINATE_STATUS", "SUCCESS");
VMURL vm = VMURL.parseURL(vm_url);
if (validateVM(rc, appName, vm_url, vm))
return null;
IdentityURL ident = IdentityURL.parseURL(params.get(ProviderAdapter.PROPERTY_IDENTITY_URL));
String identStr = (ident == null) ? null : ident.toString();
Context context = null;
String tenantName = "Unknown";//to be used also in case of exception
try {
context = getContext(rc, vm_url, identStr);
if (context != null) {
tenantName = context.getTenantName();//this varaible also is used in case of exception
server = lookupServer(rc, context, vm.getServerId());
logger.debug(Msg.SERVER_FOUND, vm_url, tenantName, server.getStatus().toString());
logger.info(EELFResourceManager.format(Msg.TERMINATING_SERVER, server.getName()));
terminateServer(rc, server);
logger.info(EELFResourceManager.format(Msg.TERMINATE_SERVER, server.getName()));
context.close();
doSuccess(rc);
} else {
ctx.setAttribute("TERMINATE_STATUS", "SERVER_NOT_FOUND");
}
} catch (ResourceNotFoundException e) {
String msg = EELFResourceManager.format(Msg.SERVER_NOT_FOUND, e, vm_url);
logger.error(msg);
doFailure(rc, HttpStatus.NOT_FOUND_404, msg);
ctx.setAttribute("TERMINATE_STATUS", "SERVER_NOT_FOUND");
} catch (Exception e1) {
String msg = EELFResourceManager.format(Msg.SERVER_OPERATION_EXCEPTION, e1,
e1.getClass().getSimpleName(), RESTART_SERVICE.toString(), vm_url,
tenantName);
logger.error(msg, e1);
doFailure(rc, HttpStatus.INTERNAL_SERVER_ERROR_500, msg);
}
} catch (RequestFailedException e) {
logger.error(
EELFResourceManager.format(Msg.TERMINATE_SERVER_FAILED, appName, "n/a", "n/a", e.getMessage()));
doFailure(rc, e.getStatus(), e.getMessage());
ctx.setAttribute("TERMINATE_STATUS", "ERROR");
}
return server;
}
@Override
protected ModelObject executeProviderOperation(Map<String, String> params, SvcLogicContext context)
throws UnknownProviderException {
setMDC(TERMINATE_SERVICE.toString(), "App-C IaaS Adapter:Terminate", ADAPTER_NAME);
logOperation(Msg.TERMINATING_SERVER, params, context);
return terminateServer(params, context);
}
}
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