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/*-
* ============LICENSE_START=======================================================
* ONAP - SO
* ================================================================================
* Copyright (C) 2019 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* 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.so.adapters.audit;
import java.net.URI;
import java.util.Arrays;
import java.util.HashSet;
import java.util.List;
import java.util.Optional;
import java.util.Set;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import java.util.stream.Collectors;
import java.util.stream.Stream;
import org.onap.aai.domain.yang.LInterface;
import org.onap.aai.domain.yang.LInterfaces;
import org.onap.aai.domain.yang.Vlan;
import org.onap.aai.domain.yang.Vlans;
import org.onap.aai.domain.yang.Vserver;
import org.onap.so.openstack.utils.MsoHeatUtils;
import org.onap.so.openstack.utils.MsoNeutronUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import com.woorea.openstack.heat.model.Link;
import com.woorea.openstack.heat.model.Resource;
import com.woorea.openstack.heat.model.Resources;
import com.woorea.openstack.heat.model.Stack;
import com.woorea.openstack.quantum.model.Port;
@Component
public class HeatStackAudit {
private static final String RESOURCES = "/resources";
protected static final Logger logger = LoggerFactory.getLogger(HeatStackAudit.class);
@Autowired
protected MsoHeatUtils heat;
@Autowired
protected MsoNeutronUtils neutron;
@Autowired
protected AuditVServer auditVservers;
public Optional<AAIObjectAuditList> auditHeatStack(String cloudRegion, String cloudOwner, String tenantId,
String heatStackName) {
try {
logger.debug("Fetching Top Level Stack Information");
Resources resources = heat.queryStackResources(cloudRegion, tenantId, heatStackName, 3);
List<Resource> novaResources = resources.getList().stream()
.filter(p -> "OS::Nova::Server".equals(p.getType())).collect(Collectors.toList());
List<Resource> resourceGroups = resources.getList().stream()
.filter(p -> "OS::Heat::ResourceGroup".equals(p.getType()) && p.getName().contains("subinterfaces"))
.collect(Collectors.toList());
List<Optional<Port>> neutronPortDetails = retrieveNeutronPortDetails(resources, cloudRegion, tenantId);
if (novaResources.isEmpty())
return Optional.of(new AAIObjectAuditList());
else {
Set<Vserver> vserversToAudit = createVserverSet(resources, novaResources, neutronPortDetails);
Set<Vserver> vserversWithSubInterfaces =
processSubInterfaces(cloudRegion, tenantId, resourceGroups, vserversToAudit);
return auditVservers.auditVservers(vserversWithSubInterfaces, tenantId, cloudOwner, cloudRegion);
}
} catch (Exception e) {
logger.error("Error during auditing stack resources", e);
return Optional.empty();
}
}
protected Set<Vserver> processSubInterfaces(String cloudRegion, String tenantId, List<Resource> resourceGroups,
Set<Vserver> vServersToAudit) throws Exception {
for (Resource resourceGroup : resourceGroups) {
processResourceGroups(cloudRegion, tenantId, vServersToAudit, resourceGroup);
}
return vServersToAudit;
}
protected void processResourceGroups(String cloudRegion, String tenantId, Set<Vserver> vServersWithLInterface,
Resource resourceGroup) throws Exception {
Optional<Link> stackLink =
resourceGroup.getLinks().stream().filter(link -> "nested".equals(link.getRel())).findAny();
if (stackLink.isPresent()) {
try {
Optional<String> path = extractResourcePathFromHref(stackLink.get().getHref());
if (path.isPresent()) {
logger.debug("Fetching nested Resource Stack Information");
Resources nestedResourceGroupResources =
heat.executeHeatClientRequest(path.get(), cloudRegion, tenantId, Resources.class);
processNestedResourceGroup(cloudRegion, tenantId, vServersWithLInterface,
nestedResourceGroupResources);
} else
throw new Exception("Error finding Path from Self Link");
} catch (Exception e) {
logger.error("Error Parsing Link to obtain Path", e);
throw new Exception("Error finding Path from Self Link");
}
}
}
protected void processNestedResourceGroup(String cloudRegion, String tenantId, Set<Vserver> vServersWithLInterface,
Resources nestedResourceGroupResources) throws Exception {
for (Resource resourceGroupNested : nestedResourceGroupResources) {
Optional<Link> subInterfaceStackLink =
resourceGroupNested.getLinks().stream().filter(link -> "nested".equals(link.getRel())).findAny();
if (subInterfaceStackLink.isPresent()) {
addSubInterface(cloudRegion, tenantId, vServersWithLInterface, subInterfaceStackLink.get());
}
}
}
protected void addSubInterface(String cloudRegion, String tenantId, Set<Vserver> vServersWithLInterface,
Link subInterfaceStackLink) throws Exception {
Optional<String> resourcePath = extractResourcePathFromHref(subInterfaceStackLink.getHref());
Optional<String> stackPath = extractStackPathFromHref(subInterfaceStackLink.getHref());
if (resourcePath.isPresent() && stackPath.isPresent()) {
logger.debug("Fetching nested Sub-Interface Stack Information");
Stack subinterfaceStack =
heat.executeHeatClientRequest(stackPath.get(), cloudRegion, tenantId, Stack.class);
Resources subinterfaceResources =
heat.executeHeatClientRequest(resourcePath.get(), cloudRegion, tenantId, Resources.class);
if (subinterfaceStack != null) {
addSubInterfaceToVserver(vServersWithLInterface, subinterfaceStack, subinterfaceResources);
}
} else
throw new Exception("Error finding Path from Self Link");
}
protected void addSubInterfaceToVserver(Set<Vserver> vServersWithLInterface, Stack subinterfaceStack,
Resources subinterfaceResources) throws Exception {
String parentNeutronPortId = (String) subinterfaceStack.getParameters().get("port_interface");
logger.debug("Parent neutron Port: {} on SubInterface: {}", parentNeutronPortId, subinterfaceStack.getId());
for (Vserver auditVserver : vServersWithLInterface)
for (LInterface lInterface : auditVserver.getLInterfaces().getLInterface())
if (parentNeutronPortId.equals(lInterface.getInterfaceId())) {
logger.debug("Found Parent Port on VServer: {} on Port: {}", auditVserver.getVserverId(),
lInterface.getInterfaceId());
Resource contrailVm = subinterfaceResources.getList().stream()
.filter(resource -> "OS::ContrailV2::VirtualMachineInterface".equals(resource.getType()))
.findAny().orElse(null);
if (contrailVm == null) {
throw new Exception("Cannnot find Contrail Virtual Machine Interface on Stack: "
+ subinterfaceStack.getId());
}
LInterface subInterface = new LInterface();
subInterface.setInterfaceId(contrailVm.getPhysicalResourceId());
subInterface.setIsPortMirrored(false);
subInterface.setInMaint(false);
subInterface.setIsIpUnnumbered(false);
String macAddr = (String) subinterfaceStack.getParameters().get("mac_address");
subInterface.setMacaddr(macAddr);
String namePrefix = (String) subinterfaceStack.getParameters().get("subinterface_name_prefix");
Integer vlanIndex = Integer.parseInt((String) subinterfaceStack.getParameters().get("counter"));
String vlanTagList = (String) subinterfaceStack.getParameters().get("vlan_tag");
List<String> subInterfaceVlanTagList = Arrays.asList(vlanTagList.split(","));
subInterface.setInterfaceName(namePrefix + "_" + subInterfaceVlanTagList.get(vlanIndex));
subInterface.setVlans(new Vlans());
Vlan vlan = new Vlan();
vlan.setInMaint(false);
vlan.setIsIpUnnumbered(false);
vlan.setVlanIdInner(Long.parseLong(subInterfaceVlanTagList.get(vlanIndex)));
vlan.setVlanInterface(namePrefix + "_" + subInterfaceVlanTagList.get(vlanIndex));
subInterface.getVlans().getVlan().add(vlan);
if (lInterface.getLInterfaces() == null)
lInterface.setLInterfaces(new LInterfaces());
lInterface.getLInterfaces().getLInterface().add(subInterface);
} else
logger.debug("Did Not Find Parent Port on VServer: {} Parent Port: SubInterface: {}",
auditVserver.getVserverId(), lInterface.getInterfaceId(), subinterfaceStack.getId());
}
protected Set<Vserver> createVserverSet(Resources resources, List<Resource> novaResources,
List<Optional<Port>> neutronPortDetails) {
Set<Vserver> vserversToAudit = new HashSet<>();
for (Resource novaResource : novaResources) {
Vserver auditVserver = new Vserver();
auditVserver.setLInterfaces(new LInterfaces());
auditVserver.setVserverId(novaResource.getPhysicalResourceId());
Stream<Port> filteredNeutronPorts = filterNeutronPorts(novaResource, neutronPortDetails);
filteredNeutronPorts.forEach(port -> {
LInterface lInterface = new LInterface();
lInterface.setInterfaceId(port.getId());
lInterface.setInterfaceName(port.getName());
auditVserver.getLInterfaces().getLInterface().add(lInterface);
});
vserversToAudit.add(auditVserver);
}
return vserversToAudit;
}
/**
* @param novaResource Single openstack resource that is of type Nova
* @param neutronPorts List of Neutron ports created within the stack
* @return Filtered list of neutron ports taht relate to the nova server in openstack
*/
protected Stream<Port> filterNeutronPorts(Resource novaResource, List<Optional<Port>> neutronPorts) {
List<Port> filteredNeutronPorts =
neutronPorts.stream().filter(Optional::isPresent).map(Optional::get).collect(Collectors.toList());
return filteredNeutronPorts.stream()
.filter(port -> port.getDeviceId().equalsIgnoreCase(novaResource.getPhysicalResourceId()));
}
/**
* @param resources Resource stream created by the stack in openstack
* @param cloudSiteId Unique site id to identify which openstack we talk to
* @param tenantId The tenant within the cloud we are talking to where resouces exist
* @return List of optional neutron ports found within the cloud site and tenant
*/
protected List<Optional<Port>> retrieveNeutronPortDetails(Resources resources, String cloudSiteId,
String tenantId) {
return resources.getList().parallelStream().filter(resource -> "OS::Neutron::Port".equals(resource.getType()))
.map(resource -> neutron.getNeutronPort(resource.getPhysicalResourceId(), tenantId, cloudSiteId))
.collect(Collectors.toList());
}
protected Optional<String> extractResourcePathFromHref(String href) {
try {
Optional<String> stackPath = extractStackPathFromHref(href);
if (stackPath.isPresent()) {
return Optional.of(stackPath.get() + RESOURCES);
} else
return Optional.empty();
} catch (Exception e) {
logger.error("Error parsing URI", e);
}
return Optional.empty();
}
protected Optional<String> extractStackPathFromHref(String href) {
try {
URI uri = new URI(href);
Pattern p = Pattern.compile("/stacks.*");
Matcher m = p.matcher(uri.getPath());
if (m.find()) {
return Optional.of(m.group());
} else
return Optional.empty();
} catch (Exception e) {
logger.error("Error parsing URI", e);
}
return Optional.empty();
}
}
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