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/**
* ============LICENSE_START=======================================================
* org.onap.aai
* ================================================================================
* Copyright © 2017-2018 AT&T Intellectual Property. All rights reserved.
* Copyright © 2017-2018 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.aai.sparky.viewandinspect.services;
import static java.util.concurrent.CompletableFuture.supplyAsync;
import java.net.URISyntaxException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.atomic.AtomicInteger;
import org.apache.http.client.utils.URIBuilder;
import org.onap.aai.cl.api.Logger;
import org.onap.aai.cl.eelf.LoggerFactory;
import org.onap.aai.restclient.client.OperationResult;
import org.onap.aai.sparky.config.oxm.OxmEntityDescriptor;
import org.onap.aai.sparky.config.oxm.OxmEntityLookup;
import org.onap.aai.sparky.dal.ActiveInventoryAdapter;
import org.onap.aai.sparky.logging.AaiUiMsgs;
import org.onap.aai.sparky.sync.entity.SearchableEntity;
import org.onap.aai.sparky.util.NodeUtils;
import org.onap.aai.sparky.viewandinspect.config.SparkyConstants;
import org.onap.aai.sparky.viewandinspect.config.VisualizationConfigs;
import org.onap.aai.sparky.viewandinspect.entity.ActiveInventoryNode;
import org.onap.aai.sparky.viewandinspect.entity.InlineMessage;
import org.onap.aai.sparky.viewandinspect.entity.NodeProcessingTransaction;
import org.onap.aai.sparky.viewandinspect.entity.QueryParams;
import org.onap.aai.sparky.viewandinspect.entity.Relationship;
import org.onap.aai.sparky.viewandinspect.entity.RelationshipData;
import org.onap.aai.sparky.viewandinspect.entity.RelationshipList;
import org.onap.aai.sparky.viewandinspect.entity.SelfLinkDeterminationTransaction;
import org.onap.aai.sparky.viewandinspect.enumeration.NodeProcessingAction;
import org.onap.aai.sparky.viewandinspect.enumeration.NodeProcessingState;
import org.onap.aai.sparky.viewandinspect.task.PerformNodeSelfLinkProcessingTask;
import org.onap.aai.sparky.viewandinspect.task.PerformSelfLinkDeterminationTask;
import com.fasterxml.jackson.annotation.JsonInclude.Include;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.PropertyNamingStrategy;
/**
* The Class SelfLinkNodeCollector.
*/
public class BaseVisualizationContext implements VisualizationContext {
private static final int MAX_DEPTH_EVALUATION_ATTEMPTS = 100;
private static final String DEPTH_ALL_MODIFIER = "?depth=all";
private static final String NODES_ONLY_MODIFIER = "?nodes-only";
private static final String SERVICE_INSTANCE = "service-instance";
private static final Logger LOG = LoggerFactory.getInstance().getLogger(
BaseVisualizationContext.class);
private final ActiveInventoryAdapter aaiAdapter;
private int maxSelfLinkTraversalDepth;
private AtomicInteger numLinksDiscovered;
private AtomicInteger numSuccessfulLinkResolveFromCache;
private AtomicInteger numSuccessfulLinkResolveFromFromServer;
private AtomicInteger numFailedLinkResolve;
private AtomicInteger aaiWorkOnHand;
private VisualizationConfigs visualizationConfigs;
private AtomicInteger totalLinksRetrieved;
private final long contextId;
private final String contextIdStr;
private ObjectMapper mapper;
private InlineMessage inlineMessage = null;
private ExecutorService aaiExecutorService;
private OxmEntityLookup oxmEntityLookup;
private boolean rootNodeFound;
/*
* The node cache is intended to be a flat structure indexed by a primary key to avoid needlessly
* re-requesting the same self-links over-and-over again, to speed up the overall render time and
* more importantly to reduce the network cost of determining information we already have.
*/
private ConcurrentHashMap<String, ActiveInventoryNode> nodeCache;
/**
* Instantiates a new self link node collector.
*
* @param loader the loader
* @throws Exception the exception
*/
public BaseVisualizationContext(long contextId, ActiveInventoryAdapter aaiAdapter,
ExecutorService aaiExecutorService, VisualizationConfigs visualizationConfigs,
OxmEntityLookup oxmEntityLookup)
throws Exception {
this.contextId = contextId;
this.contextIdStr = "[Context-Id=" + contextId + "]";
this.aaiAdapter = aaiAdapter;
this.aaiExecutorService = aaiExecutorService;
this.visualizationConfigs = visualizationConfigs;
this.oxmEntityLookup = oxmEntityLookup;
this.nodeCache = new ConcurrentHashMap<String, ActiveInventoryNode>();
this.numLinksDiscovered = new AtomicInteger(0);
this.totalLinksRetrieved = new AtomicInteger(0);
this.numSuccessfulLinkResolveFromCache = new AtomicInteger(0);
this.numSuccessfulLinkResolveFromFromServer = new AtomicInteger(0);
this.numFailedLinkResolve = new AtomicInteger(0);
this.aaiWorkOnHand = new AtomicInteger(0);
this.maxSelfLinkTraversalDepth = this.visualizationConfigs.getMaxSelfLinkTraversalDepth();
this.mapper = new ObjectMapper();
mapper.setSerializationInclusion(Include.NON_EMPTY);
mapper.setPropertyNamingStrategy(new PropertyNamingStrategy.KebabCaseStrategy());
this.rootNodeFound = false;
}
protected boolean isRootNodeFound() {
return rootNodeFound;
}
protected void setRootNodeFound(boolean rootNodeFound) {
this.rootNodeFound = rootNodeFound;
}
public long getContextId() {
return contextId;
}
/**
* A utility method for extracting all entity-type primary key values from a provided self-link
* and return a set of generic-query API keys.
*
* @param parentEntityType
* @param link
* @return a list of key values that can be used for this entity with the AAI generic-query API
*/
protected List<String> extractQueryParamsFromSelfLink(String link) {
List<String> queryParams = new ArrayList<String>();
if (link == null) {
LOG.error(AaiUiMsgs.QUERY_PARAM_EXTRACTION_ERROR, "self link is null");
return queryParams;
}
Map<String, OxmEntityDescriptor> entityDescriptors = oxmEntityLookup.getEntityDescriptors();
try {
URIBuilder urlBuilder = new URIBuilder(link);
String urlPath = urlBuilder.getPath();
OxmEntityDescriptor descriptor = null;
String[] urlPathElements = urlPath.split("/");
List<String> primaryKeyNames = null;
int index = 0;
String entityType = null;
while (index < urlPathElements.length) {
descriptor = entityDescriptors.get(urlPathElements[index]);
if (descriptor != null) {
entityType = urlPathElements[index];
primaryKeyNames = descriptor.getPrimaryKeyAttributeNames();
/*
* Make sure from what ever index we matched the parent entity-type on that we can extract
* additional path elements for the primary key values.
*/
if (index + primaryKeyNames.size() < urlPathElements.length) {
for (String primaryKeyName : primaryKeyNames) {
index++;
queryParams.add(entityType + "." + primaryKeyName + ":" + urlPathElements[index]);
}
} else {
LOG.error(AaiUiMsgs.QUERY_PARAM_EXTRACTION_ERROR,
"Could not extract query parametrs for entity-type = '" + entityType
+ "' from self-link = " + link);
}
}
index++;
}
} catch (URISyntaxException exc) {
LOG.error(AaiUiMsgs.QUERY_PARAM_EXTRACTION_ERROR,
"Error extracting query parameters from self-link = " + link + ". Error = "
+ exc.getMessage());
}
return queryParams;
}
/**
* Decode complex attribute group.
*
* @param ain the ain
* @param attributeGroup the attribute group
* @return boolean indicating whether operation was successful (true), / failure(false).
*/
public boolean decodeComplexAttributeGroup(ActiveInventoryNode ain, JsonNode attributeGroup) {
try {
Iterator<Entry<String, JsonNode>> entityArrays = attributeGroup.fields();
Entry<String, JsonNode> entityArray = null;
if (entityArrays == null) {
LOG.error(AaiUiMsgs.ATTRIBUTE_GROUP_FAILURE, attributeGroup.toString());
ain.changeState(NodeProcessingState.ERROR, NodeProcessingAction.NEIGHBORS_PROCESSED_ERROR);
return false;
}
while (entityArrays.hasNext()) {
entityArray = entityArrays.next();
String entityType = entityArray.getKey();
JsonNode entityArrayObject = entityArray.getValue();
if (entityArrayObject.isArray()) {
Iterator<JsonNode> entityCollection = entityArrayObject.elements();
JsonNode entity = null;
while (entityCollection.hasNext()) {
entity = entityCollection.next();
if (LOG.isDebugEnabled()) {
LOG.debug(AaiUiMsgs.DEBUG_GENERIC, "decodeComplexAttributeGroup(),"
+ " entity = " + entity.toString());
}
/**
* Here's what we are going to do:
*
* <li>In the ActiveInventoryNode, on construction maintain a collection of queryParams
* that is added to for the purpose of discovering parent->child hierarchies.
*
* <li>When we hit this block of the code then we'll use the queryParams to feed the
* generic query to resolve the self-link asynchronously.
*
* <li>Upon successful link determination, then and only then will we create a new node
* in the nodeCache and process the child
*
*/
ActiveInventoryNode newNode = new ActiveInventoryNode(this.visualizationConfigs, oxmEntityLookup);
newNode.setEntityType(entityType);
/*
* This is partially a lie because we actually don't have a self-link for complex nodes
* discovered in this way.
*/
newNode.setSelfLinkProcessed(true);
newNode.changeState(NodeProcessingState.SELF_LINK_RESPONSE_UNPROCESSED,
NodeProcessingAction.COMPLEX_ATTRIBUTE_GROUP_PARSE_OK);
/*
* copy parent query params into new child
*/
if (SERVICE_INSTANCE.equals(entityType)) {
/*
* 1707 AAI has an issue being tracked with AAI-8932 where the generic-query cannot be
* resolved if all the service-instance path keys are provided. The query only works
* if only the service-instance key and valude are passed due to a historical reason.
* A fix is being worked on for 1707, and when it becomes available we can revert this
* small change.
*/
newNode.clearQueryParams();
} else {
/*
* For all other entity-types we want to copy the parent query parameters into the new node
* query parameters.
*/
for (String queryParam : ain.getQueryParams()) {
newNode.addQueryParam(queryParam);
}
}
if (!addComplexGroupToNode(newNode, entity)) {
LOG.error(AaiUiMsgs.ATTRIBUTE_GROUP_FAILURE, "Failed to add child to parent for child = " + entity.toString());
}
if (!addNodeQueryParams(newNode)) {
LOG.error(AaiUiMsgs.FAILED_TO_DETERMINE_NODE_ID, "Error determining node id and key for node = " + newNode.dumpNodeTree(true)
+ " skipping relationship processing");
newNode.changeState(NodeProcessingState.ERROR,
NodeProcessingAction.NODE_IDENTITY_ERROR);
return false;
} else {
newNode.changeState(NodeProcessingState.NEIGHBORS_UNPROCESSED,
NodeProcessingAction.COMPLEX_ATTRIBUTE_GROUP_PARSE_OK);
}
/*
* Order matters for the query params. We need to set the parent ones before the child
* node
*/
String selfLinkQuery =
aaiAdapter.getGenericQueryForSelfLink(entityType, newNode.getQueryParams());
/**
* <li>get the self-link
* <li>add it to the new node
* <li>generate node id
* <li>add node to node cache
* <li>add node id to parent outbound links list
* <li>process node children (should be automatic) (but don't query and resolve
* self-link as we already have all the data)
*/
SelfLinkDeterminationTransaction txn = new SelfLinkDeterminationTransaction();
txn.setQueryString(selfLinkQuery);
txn.setNewNode(newNode);
txn.setParentNodeId(ain.getNodeId());
aaiWorkOnHand.incrementAndGet();
supplyAsync(new PerformSelfLinkDeterminationTask(txn, null, aaiAdapter),
aaiExecutorService).whenComplete((nodeTxn, error) -> {
if (error != null) {
LOG.error(AaiUiMsgs.SELF_LINK_DETERMINATION_FAILED_GENERIC, selfLinkQuery);
} else {
OperationResult opResult = nodeTxn.getOpResult();
ActiveInventoryNode newChildNode = txn.getNewNode();
if (opResult != null && opResult.wasSuccessful()) {
if (!opResult.wasSuccessful()) {
numFailedLinkResolve.incrementAndGet();
}
if (opResult.isFromCache()) {
numSuccessfulLinkResolveFromCache.incrementAndGet();
} else {
numSuccessfulLinkResolveFromFromServer.incrementAndGet();
}
/*
* extract the self-link from the operational result.
*/
Collection<JsonNode> entityLinks = new ArrayList<JsonNode>();
JsonNode genericQueryResult = null;
try {
genericQueryResult =
NodeUtils.convertJsonStrToJsonNode(nodeTxn.getOpResult().getResult());
} catch (Exception exc) {
LOG.error(AaiUiMsgs.JSON_CONVERSION_ERROR, JsonNode.class.toString(), exc.getMessage());
}
NodeUtils.extractObjectsByKey(genericQueryResult, "resource-link",
entityLinks);
String selfLink = null;
if (entityLinks.size() != 1) {
LOG.error(AaiUiMsgs.SELF_LINK_DETERMINATION_FAILED_UNEXPECTED_LINKS, String.valueOf(entityLinks.size()));
} else {
selfLink = ((JsonNode) entityLinks.toArray()[0]).asText();
selfLink = ActiveInventoryAdapter.extractResourcePath(selfLink);
newChildNode.setSelfLink(selfLink);
newChildNode.setNodeId(NodeUtils.generateUniqueShaDigest(selfLink));
String uri = NodeUtils.calculateEditAttributeUri(selfLink);
if (uri != null) {
newChildNode.addProperty(SparkyConstants.URI_ATTR_NAME, uri);
}
ActiveInventoryNode parent = nodeCache.get(txn.getParentNodeId());
if (parent != null) {
parent.addOutboundNeighbor(newChildNode.getNodeId());
newChildNode.addInboundNeighbor(parent.getNodeId());
}
newChildNode.setSelfLinkPendingResolve(false);
newChildNode.setSelfLinkProcessed(true);
newChildNode.changeState(NodeProcessingState.NEIGHBORS_UNPROCESSED,
NodeProcessingAction.SELF_LINK_RESPONSE_PARSE_OK);
nodeCache.putIfAbsent(newChildNode.getNodeId(), newChildNode);
}
} else {
LOG.error(AaiUiMsgs.SELF_LINK_RETRIEVAL_FAILED, txn.getQueryString(),
String.valueOf(nodeTxn.getOpResult().getResultCode()), nodeTxn.getOpResult().getResult());
newChildNode.setSelflinkRetrievalFailure(true);
newChildNode.setSelfLinkProcessed(true);
newChildNode.setSelfLinkPendingResolve(false);
newChildNode.changeState(NodeProcessingState.ERROR,
NodeProcessingAction.SELF_LINK_DETERMINATION_ERROR);
}
}
aaiWorkOnHand.decrementAndGet();
});
}
return true;
} else {
LOG.error(AaiUiMsgs.UNHANDLED_OBJ_TYPE_FOR_ENTITY_TYPE, entityType);
}
}
} catch (Exception exc) {
LOG.error(AaiUiMsgs.SELF_LINK_PROCESSING_ERROR, "Exception caught while"
+ " decoding complex attribute group - " + exc.getMessage());
}
return false;
}
/**
* Process self link response.
*
* @param nodeId the node id
*/
private void processSelfLinkResponse(String nodeId) {
if (nodeId == null) {
LOG.error(AaiUiMsgs.SELF_LINK_PROCESSING_ERROR, "Cannot process self link"
+ " response because nodeId is null");
return;
}
ActiveInventoryNode ain = nodeCache.get(nodeId);
if (ain == null) {
LOG.error(AaiUiMsgs.SELF_LINK_PROCESSING_ERROR, "Cannot process self link response"
+ " because can't find node for id = " + nodeId);
return;
}
JsonNode jsonNode = null;
try {
jsonNode = mapper.readValue(ain.getOpResult().getResult(), JsonNode.class);
} catch (Exception exc) {
LOG.error(AaiUiMsgs.SELF_LINK_JSON_PARSE_ERROR, "Failed to marshal json"
+ " response str into JsonNode with error, " + exc.getLocalizedMessage());
ain.changeState(NodeProcessingState.ERROR,
NodeProcessingAction.SELF_LINK_RESPONSE_PARSE_ERROR);
return;
}
if (jsonNode == null) {
LOG.error(AaiUiMsgs.SELF_LINK_JSON_PARSE_ERROR, "Failed to parse json node str."
+ " Parse resulted a null value.");
ain.changeState(NodeProcessingState.ERROR,
NodeProcessingAction.SELF_LINK_RESPONSE_PARSE_ERROR);
return;
}
Iterator<Entry<String, JsonNode>> fieldNames = jsonNode.fields();
Entry<String, JsonNode> field = null;
RelationshipList relationshipList = null;
while (fieldNames.hasNext()) {
field = fieldNames.next();
String fieldName = field.getKey();
if ("relationship-list".equals(fieldName)) {
try {
relationshipList = mapper.readValue(field.getValue().toString(), RelationshipList.class);
if (relationshipList != null) {
ain.addRelationshipList(relationshipList);
}
} catch (Exception exc) {
LOG.error(AaiUiMsgs.SELF_LINK_JSON_PARSE_ERROR, "Failed to parse relationship-list"
+ " attribute. Parse resulted in error, " + exc.getLocalizedMessage());
ain.changeState(NodeProcessingState.ERROR,
NodeProcessingAction.SELF_LINK_RESPONSE_PARSE_ERROR);
return;
}
} else {
JsonNode nodeValue = field.getValue();
if(nodeValue!=null) {
if (nodeValue.isValueNode()) {
String key = fieldName;
handleNodeValue(ain, fieldName, key, nodeValue.asText());
} else if (nodeValue.isArray()) {
String key = field.getKey();
handleNodeValue(ain, fieldName, key, nodeValue.toString());
} else {
ain.addComplexGroup(nodeValue);
}
}
}
}
String uri = NodeUtils.calculateEditAttributeUri(ain.getSelfLink());
if (uri != null) {
ain.addProperty(SparkyConstants.URI_ATTR_NAME, uri);
}
/*
* We need a special behavior for intermediate entities from the REST model
*
* Tenants are not top level entities, and when we want to visualization
* their children, we need to construct keys that include the parent entity query
* keys, the current entity type keys, and the child keys. We'll always have the
* current entity and children, but never the parent entity in the current (1707) REST
* data model.
*
* We have two possible solutions:
*
* 1) Try to use the custom-query approach to learn about the entity keys
* - this could be done, but it could be very expensive for large objects. When we do the first
* query to get a tenant, it will list all the in and out edges related to this entity,
* there is presently no way to filter this. But the approach could be made to work and it would be
* somewhat data-model driven, other than the fact that we have to first realize that the entity
* that is being searched for is not top-level entity. Once we have globally unique ids for resources
* this logic will not be needed and everything will be simpler. The only reason we are in this logic
* at all is to be able to calculate a url for the child entities so we can hash it to generate
* a globally unique id that can be safely used for the node.
*
* *2* Extract the keys from the pathed self-link.
* This is a bad solution and I don't like it but it will be fast for all resource types, as the
* information is already encoded in the URI. When we get to a point where we switch to a better
* globally unique entity identity model, then a lot of the code being used to calculate an entity url
* to in-turn generate a deterministic globally unique id will disappear.
*
*
* right now we have the following:
*
* - cloud-regions/cloud-region/{cloud-region-id}/{cloud-owner-id}/tenants/tenant/{tenant-id}
*
*/
/*
* For all entity types use the self-link extraction method to be consistent. Once we have a
* globally unique identity mechanism for entities, this logic can be revisited.
*/
ain.clearQueryParams();
ain.addQueryParams(extractQueryParamsFromSelfLink(ain.getSelfLink()));
ain.changeState(NodeProcessingState.NEIGHBORS_UNPROCESSED,
NodeProcessingAction.SELF_LINK_RESPONSE_PARSE_OK);
}
private void handleNodeValue(ActiveInventoryNode ain, String fieldName, String key, String value) {
if (oxmEntityLookup.getEntityDescriptors().get(fieldName) == null) {
/*
* entity property name is not an entity, thus we can add this property name and value
* to our property set
*/
ain.addProperty(key, value);
}
}
/**
* Perform self link resolve.
*
* @param nodeId the node id
*/
private void performSelfLinkResolve(String nodeId) {
if (nodeId == null) {
LOG.error(AaiUiMsgs.SELF_LINK_PROCESSING_ERROR, "Resolve of self-link"
+ " has been skipped because provided nodeId is null");
return;
}
ActiveInventoryNode ain = nodeCache.get(nodeId);
if (ain == null) {
LOG.error(AaiUiMsgs.SELF_LINK_PROCESSING_ERROR, "Failed to find node with id, " + nodeId
+ ", from node cache. Resolve self-link method has been skipped.");
return;
}
if (!ain.isSelfLinkPendingResolve()) {
ain.setSelfLinkPendingResolve(true);
// kick off async self-link resolution
if (LOG.isDebugEnabled()) {
LOG.debug(AaiUiMsgs.DEBUG_GENERIC,
"About to process node in SELF_LINK_UNPROCESSED State, link = " + ain.getSelfLink());
}
numLinksDiscovered.incrementAndGet();
String depthModifier = DEPTH_ALL_MODIFIER;
/*
* If the current node is the search target, we want to see everything the node has to offer
* from the self-link and not filter it to a single node.
*/
if (visualizationConfigs.getShallowEntities().contains(ain.getEntityType())
&& !ain.isRootNode()) {
depthModifier = NODES_ONLY_MODIFIER;
}
NodeProcessingTransaction txn = new NodeProcessingTransaction();
txn.setProcessingNode(ain);
txn.setRequestParameters(depthModifier);
aaiWorkOnHand.incrementAndGet();
supplyAsync(
new PerformNodeSelfLinkProcessingTask(txn, depthModifier, aaiAdapter),
aaiExecutorService).whenComplete((nodeTxn, error) -> {
if (error != null) {
/*
* an error processing the self link should probably result in the node processing
* state shifting to ERROR
*/
nodeTxn.getProcessingNode().setSelflinkRetrievalFailure(true);
nodeTxn.getProcessingNode().changeState(NodeProcessingState.ERROR,
NodeProcessingAction.SELF_LINK_RESOLVE_ERROR);
nodeTxn.getProcessingNode().setSelfLinkPendingResolve(false);
} else {
totalLinksRetrieved.incrementAndGet();
OperationResult opResult = nodeTxn.getOpResult();
if (opResult != null && opResult.wasSuccessful()) {
if (!opResult.wasSuccessful()) {
numFailedLinkResolve.incrementAndGet();
}
if (opResult.isFromCache()) {
numSuccessfulLinkResolveFromCache.incrementAndGet();
} else {
numSuccessfulLinkResolveFromFromServer.incrementAndGet();
}
// success path
nodeTxn.getProcessingNode().setOpResult(opResult);
nodeTxn.getProcessingNode().changeState(
NodeProcessingState.SELF_LINK_RESPONSE_UNPROCESSED,
NodeProcessingAction.SELF_LINK_RESOLVE_OK);
nodeTxn.getProcessingNode().setSelfLinkProcessed(true);
nodeTxn.getProcessingNode().setSelfLinkPendingResolve(false);
} else {
LOG.error(AaiUiMsgs.SELF_LINK_PROCESSING_ERROR, "Self Link retrieval for link,"
+ txn.getSelfLinkWithModifiers() + ", failed with error code,"
+ nodeTxn.getOpResult().getResultCode() + ", and message,"
+ nodeTxn.getOpResult().getResult());
nodeTxn.getProcessingNode().setSelflinkRetrievalFailure(true);
nodeTxn.getProcessingNode().setSelfLinkProcessed(true);
nodeTxn.getProcessingNode().changeState(NodeProcessingState.ERROR,
NodeProcessingAction.SELF_LINK_RESOLVE_ERROR);
nodeTxn.getProcessingNode().setSelfLinkPendingResolve(false);
}
}
aaiWorkOnHand.decrementAndGet();
});
}
}
/**
* Process neighbors.
*
* @param nodeId the node id
*/
private void processNeighbors(String nodeId) {
if (nodeId == null) {
LOG.error(AaiUiMsgs.SELF_LINK_PROCESS_NEIGHBORS_ERROR, "Failed to process"
+ " neighbors because nodeId is null.");
return;
}
ActiveInventoryNode ain = nodeCache.get(nodeId);
if (ain == null) {
LOG.error(AaiUiMsgs.SELF_LINK_PROCESS_NEIGHBORS_ERROR, "Failed to process"
+ " neighbors because node could not be found in nodeCache with id, " + nodeId);
return;
}
/*
* process complex attribute and relationships
*/
boolean neighborsProcessedSuccessfully = true;
for (JsonNode n : ain.getComplexGroups()) {
neighborsProcessedSuccessfully &= decodeComplexAttributeGroup(ain, n);
}
for (RelationshipList relationshipList : ain.getRelationshipLists()) {
neighborsProcessedSuccessfully &= addSelfLinkRelationshipChildren(ain, relationshipList);
}
if (neighborsProcessedSuccessfully) {
ain.changeState(NodeProcessingState.READY, NodeProcessingAction.NEIGHBORS_PROCESSED_OK);
} else {
ain.changeState(NodeProcessingState.ERROR, NodeProcessingAction.NEIGHBORS_PROCESSED_ERROR);
}
/*
* If neighbors fail to process, there is already a call to change the state within the
* relationship and neighbor processing functions.
*/
}
/**
* Find and mark root node.
*
* @param queryParams the query params
* @return true, if successful
*/
private void findAndMarkRootNode(QueryParams queryParams) {
if (isRootNodeFound()) {
return;
}
for (ActiveInventoryNode cacheNode : nodeCache.values()) {
if (queryParams.getSearchTargetNodeId().equals(cacheNode.getNodeId())) {
cacheNode.setNodeDepth(0);
cacheNode.setRootNode(true);
LOG.info(AaiUiMsgs.ROOT_NODE_DISCOVERED, queryParams.getSearchTargetNodeId());
setRootNodeFound(true);
}
}
}
/**
* Process current node states.
*
*/
private void processCurrentNodeStates(QueryParams queryParams) {
/*
* Force an evaluation of node depths before determining if we should limit state-based
* traversal or processing.
*/
findAndMarkRootNode(queryParams);
verifyOutboundNeighbors();
for (ActiveInventoryNode cacheNode : nodeCache.values()) {
if (LOG.isDebugEnabled()) {
LOG.debug(AaiUiMsgs.DEBUG_GENERIC,
"processCurrentNodeState(), nid = "
+ cacheNode.getNodeId() + " , nodeDepth = " + cacheNode.getNodeDepth());
}
switch (cacheNode.getState()) {
case INIT: {
processInitialState(cacheNode.getNodeId());
break;
}
case READY:
case ERROR: {
break;
}
case SELF_LINK_UNRESOLVED: {
performSelfLinkResolve(cacheNode.getNodeId());
break;
}
case SELF_LINK_RESPONSE_UNPROCESSED: {
processSelfLinkResponse(cacheNode.getNodeId());
break;
}
case NEIGHBORS_UNPROCESSED: {
/*
* We use the rootNodeDiscovered flag to ignore depth retrieval thresholds until the root
* node is identified. Then the evaluative depth calculations should re-balance the graph
* around the root node.
*/
if (!isRootNodeFound() || cacheNode.getNodeDepth() < this.visualizationConfigs
.getMaxSelfLinkTraversalDepth()) {
if (LOG.isDebugEnabled()) {
LOG.debug(AaiUiMsgs.DEBUG_GENERIC,
"processCurrentNodeState() -- Node at max depth,"
+ " halting processing at current state = -- "
+ cacheNode.getState() + " nodeId = " + cacheNode.getNodeId());
}
processNeighbors(cacheNode.getNodeId());
}
break;
}
default:
break;
}
}
}
/**
* Adds the complex group to node.
*
* @param targetNode the target node
* @param attributeGroup the attribute group
* @return true, if successful
*/
private boolean addComplexGroupToNode(ActiveInventoryNode targetNode, JsonNode attributeGroup) {
if (attributeGroup == null) {
targetNode.changeState(NodeProcessingState.ERROR,
NodeProcessingAction.COMPLEX_ATTRIBUTE_GROUP_PARSE_OK);
return false;
}
RelationshipList relationshipList = null;
if (attributeGroup.isObject()) {
Iterator<Entry<String, JsonNode>> fields = attributeGroup.fields();
Entry<String, JsonNode> field = null;
String fieldName;
JsonNode fieldValue;
while (fields.hasNext()) {
field = fields.next();
fieldName = field.getKey();
fieldValue = field.getValue();
if (fieldValue.isObject()) {
if (fieldName.equals("relationship-list")) {
try {
relationshipList =
mapper.readValue(field.getValue().toString(), RelationshipList.class);
if (relationshipList != null) {
targetNode.addRelationshipList(relationshipList);
}
} catch (Exception exc) {
LOG.error(AaiUiMsgs.SELF_LINK_JSON_PARSE_ERROR, "Failed to parse"
+ " relationship-list attribute. Parse resulted in error, "
+ exc.getLocalizedMessage());
targetNode.changeState(NodeProcessingState.ERROR,
NodeProcessingAction.COMPLEX_ATTRIBUTE_GROUP_PARSE_ERROR);
return false;
}
} else {
targetNode.addComplexGroup(fieldValue);
}
} else if (fieldValue.isArray()) {
if (LOG.isDebugEnabled()) {
LOG.debug(AaiUiMsgs.DEBUG_GENERIC,
"Unexpected array type with a key = " + fieldName);
}
} else if (fieldValue.isValueNode()) {
if (oxmEntityLookup.getEntityDescriptors().get(field.getKey()) == null) {
/*
* property key is not an entity type, add it to our property set.
*/
targetNode.addProperty(field.getKey(), fieldValue.asText());
}
}
}
} else if (attributeGroup.isArray()) {
if (LOG.isDebugEnabled()) {
LOG.debug(AaiUiMsgs.DEBUG_GENERIC,
"Unexpected array type for attributeGroup = " + attributeGroup);
}
} else if (attributeGroup.isValueNode()) {
if (LOG.isDebugEnabled()) {
LOG.debug(AaiUiMsgs.DEBUG_GENERIC,
"Unexpected value type for attributeGroup = " + attributeGroup);
}
}
return true;
}
public int getNumSuccessfulLinkResolveFromCache() {
return numSuccessfulLinkResolveFromCache.get();
}
public int getNumSuccessfulLinkResolveFromFromServer() {
return numSuccessfulLinkResolveFromFromServer.get();
}
public int getNumFailedLinkResolve() {
return numFailedLinkResolve.get();
}
public InlineMessage getInlineMessage() {
return inlineMessage;
}
public void setInlineMessage(InlineMessage inlineMessage) {
this.inlineMessage = inlineMessage;
}
public void setMaxSelfLinkTraversalDepth(int depth) {
this.maxSelfLinkTraversalDepth = depth;
}
public int getMaxSelfLinkTraversalDepth() {
return this.maxSelfLinkTraversalDepth;
}
public ConcurrentHashMap<String, ActiveInventoryNode> getNodeCache() {
return nodeCache;
}
/**
* Gets the relationship primary key values.
*
* @param r the r
* @param entityType the entity type
* @param pkeyNames the pkey names
* @return the relationship primary key values
*/
private String getRelationshipPrimaryKeyValues(Relationship r, String entityType,
List<String> pkeyNames) {
StringBuilder sb = new StringBuilder(64);
if (pkeyNames.size() > 0) {
String primaryKey = extractKeyValueFromRelationData(r, entityType + "." + pkeyNames.get(0));
if (primaryKey != null) {
sb.append(primaryKey);
} else {
// this should be a fatal error because unless we can
// successfully retrieve all the expected keys we'll end up
// with a garbage node
LOG.error(AaiUiMsgs.EXTRACTION_ERROR, "ERROR: Failed to extract"
+ " keyName, " + entityType + "." + pkeyNames.get(0)
+ ", from relationship data, " + r.toString());
return null;
}
for (int i = 1; i < pkeyNames.size(); i++) {
String kv = extractKeyValueFromRelationData(r, entityType + "." + pkeyNames.get(i));
if (kv != null) {
sb.append("/").append(kv);
} else {
// this should be a fatal error because unless we can
// successfully retrieve all the expected keys we'll end up
// with a garbage node
LOG.error(AaiUiMsgs.EXTRACTION_ERROR, "ERROR: failed to extract keyName, "
+ entityType + "." + pkeyNames.get(i)
+ ", from relationship data, " + r.toString());
return null;
}
}
return sb.toString();
}
return null;
}
/**
* Extract key value from relation data.
*
* @param r the r
* @param keyName the key name
* @return the string
*/
private String extractKeyValueFromRelationData(Relationship r, String keyName) {
RelationshipData[] rdList = r.getRelationshipData();
for (RelationshipData relData : rdList) {
if (relData.getRelationshipKey().equals(keyName)) {
return relData.getRelationshipValue();
}
}
return null;
}
/**
* Determine node id and key.
*
* @param ain the ain
* @return true, if successful
*/
private boolean addNodeQueryParams(ActiveInventoryNode ain) {
if (ain == null) {
LOG.error(AaiUiMsgs.FAILED_TO_DETERMINE_NODE_ID, "ActiveInventoryNode is null");
return false;
}
List<String> pkeyNames =
oxmEntityLookup.getEntityDescriptors().get(ain.getEntityType()).getPrimaryKeyAttributeNames();
if (pkeyNames == null || pkeyNames.size() == 0) {
LOG.error(AaiUiMsgs.FAILED_TO_DETERMINE_NODE_ID, "Primary key names is empty");
return false;
}
StringBuilder sb = new StringBuilder(64);
if (pkeyNames.size() > 0) {
String primaryKey = ain.getProperties().get(pkeyNames.get(0));
if (primaryKey != null) {
sb.append(primaryKey);
} else {
// this should be a fatal error because unless we can
// successfully retrieve all the expected keys we'll end up
// with a garbage node
LOG.error(AaiUiMsgs.EXTRACTION_ERROR, "ERROR: Failed to extract keyName, "
+ pkeyNames.get(0) + ", from entity properties");
return false;
}
for (int i = 1; i < pkeyNames.size(); i++) {
String kv = ain.getProperties().get(pkeyNames.get(i));
if (kv != null) {
sb.append("/").append(kv);
} else {
// this should be a fatal error because unless we can
// successfully retrieve all the expected keys we'll end up
// with a garbage node
LOG.error(AaiUiMsgs.EXTRACTION_ERROR, "ERROR: Failed to extract keyName, "
+ pkeyNames.get(i) + ", from entity properties");
return false;
}
}
/*final String nodeId = NodeUtils.generateUniqueShaDigest(ain.getEntityType(),
NodeUtils.concatArray(pkeyNames, "/"), sb.toString());*/
//ain.setNodeId(nodeId);
ain.setPrimaryKeyName(NodeUtils.concatArray(pkeyNames, "/"));
ain.setPrimaryKeyValue(sb.toString());
if (ain.getEntityType() != null && ain.getPrimaryKeyName() != null
&& ain.getPrimaryKeyValue() != null) {
ain.addQueryParam(
ain.getEntityType() + "." + ain.getPrimaryKeyName() + ":" + ain.getPrimaryKeyValue());
}
return true;
}
return false;
}
/**
* Adds the self link relationship children.
*
* @param processingNode the processing node
* @param relationshipList the relationship list
* @return true, if successful
*/
private boolean addSelfLinkRelationshipChildren(ActiveInventoryNode processingNode,
RelationshipList relationshipList) {
if (relationshipList == null) {
LOG.debug(AaiUiMsgs.DEBUG_GENERIC, "No relationships added to parent node = "
+ processingNode.getNodeId() + " because relationshipList is empty");
processingNode.changeState(NodeProcessingState.ERROR,
NodeProcessingAction.NEIGHBORS_PROCESSED_ERROR);
return false;
}
Relationship[] relationshipArray = relationshipList.getRelationshipList();
OxmEntityDescriptor descriptor = null;
String repairedSelfLink = null;
if (relationshipArray != null) {
ActiveInventoryNode newNode = null;
String resourcePath = null;
for (Relationship r : relationshipArray) {
resourcePath = ActiveInventoryAdapter.extractResourcePath(r.getRelatedLink());
String nodeId = NodeUtils.generateUniqueShaDigest(resourcePath);
if (nodeId == null) {
LOG.error(AaiUiMsgs.SKIPPING_RELATIONSHIP, r.toString());
processingNode.changeState(NodeProcessingState.ERROR,
NodeProcessingAction.NODE_IDENTITY_ERROR);
return false;
}
newNode = new ActiveInventoryNode(this.visualizationConfigs, oxmEntityLookup);
String entityType = r.getRelatedTo();
if (r.getRelationshipData() != null) {
for (RelationshipData rd : r.getRelationshipData()) {
newNode.addQueryParam(rd.getRelationshipKey() + ":" + rd.getRelationshipValue());
}
}
descriptor = oxmEntityLookup.getEntityDescriptors().get(r.getRelatedTo());
newNode.setNodeId(nodeId);
newNode.setEntityType(entityType);
newNode.setSelfLink(resourcePath);
processingNode.addOutboundNeighbor(nodeId);
if (descriptor != null) {
List<String> pkeyNames = descriptor.getPrimaryKeyAttributeNames();
newNode.changeState(NodeProcessingState.SELF_LINK_UNRESOLVED,
NodeProcessingAction.SELF_LINK_SET);
newNode.setPrimaryKeyName(NodeUtils.concatArray(pkeyNames, "/"));
String primaryKeyValues = getRelationshipPrimaryKeyValues(r, entityType, pkeyNames);
newNode.setPrimaryKeyValue(primaryKeyValues);
} else {
LOG.error(AaiUiMsgs.VISUALIZATION_OUTPUT_ERROR,
"Failed to parse entity because OXM descriptor could not be found for type = "
+ r.getRelatedTo());
newNode.changeState(NodeProcessingState.ERROR,
NodeProcessingAction.NEIGHBORS_PROCESSED_ERROR);
}
if (nodeCache.putIfAbsent(nodeId, newNode) != null) {
if (LOG.isDebugEnabled()) {
LOG.debug(AaiUiMsgs.DEBUG_GENERIC,
"Failed to add node to nodeCache because it already exists. Node id = "
+ newNode.getNodeId());
}
}
}
}
return true;
}
/**
* Process initial state.
*
* @param nodeId the node id
*/
private void processInitialState(String nodeId) {
if (nodeId == null) {
LOG.error(AaiUiMsgs.FAILED_TO_PROCESS_INITIAL_STATE, "Node id is null");
return;
}
ActiveInventoryNode cachedNode = nodeCache.get(nodeId);
if (cachedNode == null) {
LOG.error(AaiUiMsgs.FAILED_TO_PROCESS_INITIAL_STATE, "Node cannot be"
+ " found for nodeId, " + nodeId);
return;
}
if (cachedNode.getSelfLink() == null) {
if (cachedNode.getNodeId() == null ) {
/*
* if the self link is null at the INIT state, which could be valid if this node is a
* complex attribute group which didn't originate from a self-link, but in that situation
* both the node id and node key should already be set.
*/
cachedNode.changeState(NodeProcessingState.ERROR, NodeProcessingAction.NODE_IDENTITY_ERROR);
}
if (cachedNode.getNodeId() != null) {
/*
* This should be the success path branch if the self-link is not set
*/
cachedNode.changeState(NodeProcessingState.SELF_LINK_RESPONSE_UNPROCESSED,
NodeProcessingAction.SELF_LINK_RESPONSE_PARSE_OK);
}
} else {
if (cachedNode.hasResolvedSelfLink()) {
LOG.error(AaiUiMsgs.INVALID_RESOLVE_STATE_DURING_INIT);
cachedNode.changeState(NodeProcessingState.ERROR,
NodeProcessingAction.UNEXPECTED_STATE_TRANSITION);
} else {
cachedNode.changeState(NodeProcessingState.SELF_LINK_UNRESOLVED,
NodeProcessingAction.SELF_LINK_SET);
}
}
}
/**
* Process skeleton node.
*
* @param skeletonNode the skeleton node
* @param queryParams the query params
*/
private void processSearchableEntity(SearchableEntity searchTargetEntity, QueryParams queryParams) {
if (searchTargetEntity == null) {
return;
}
if (searchTargetEntity.getId() == null) {
LOG.error(AaiUiMsgs.FAILED_TO_PROCESS_SKELETON_NODE, "Failed to process skeleton"
+ " node because nodeId is null for node, " + searchTargetEntity.getLink());
return;
}
ActiveInventoryNode newNode = new ActiveInventoryNode(this.visualizationConfigs, oxmEntityLookup);
newNode.setNodeId(searchTargetEntity.getId());
newNode.setEntityType(searchTargetEntity.getEntityType());
newNode.setPrimaryKeyName(getEntityTypePrimaryKeyName(searchTargetEntity.getEntityType()));
newNode.setPrimaryKeyValue(searchTargetEntity.getEntityPrimaryKeyValue());
if (newNode.getEntityType() != null && newNode.getPrimaryKeyName() != null
&& newNode.getPrimaryKeyValue() != null) {
newNode.addQueryParam(
newNode.getEntityType() + "." + newNode.getPrimaryKeyName() + ":" + newNode.getPrimaryKeyValue());
}
/*
* This code may need some explanation. In any graph there will be a single root node. The root
* node is really the center of the universe, and for now, we are tagging the search target as
* the root node. Everything else in the visualization of the graph will be centered around this
* node as the focal point of interest.
*
* Due to it's special nature, there will only ever be one root node, and it's node depth will
* always be equal to zero.
*/
if (!isRootNodeFound()) {
if (queryParams.getSearchTargetNodeId().equals(newNode.getNodeId())) {
newNode.setNodeDepth(0);
newNode.setRootNode(true);
LOG.info(AaiUiMsgs.ROOT_NODE_DISCOVERED, queryParams.getSearchTargetNodeId());
setRootNodeFound(true);
}
}
newNode.setSelfLink(searchTargetEntity.getLink());
nodeCache.putIfAbsent(newNode.getNodeId(), newNode);
}
private int getTotalWorkOnHand() {
int numNodesWithPendingStates = 0;
if( isRootNodeFound()) {
evaluateNodeDepths();
}
for (ActiveInventoryNode n : nodeCache.values()) {
switch (n.getState()) {
case READY:
case ERROR: {
// do nothing, these are our normal
// exit states
break;
}
case NEIGHBORS_UNPROCESSED: {
if (n.getNodeDepth() < this.visualizationConfigs.getMaxSelfLinkTraversalDepth()) {
/*
* Only process our neighbors relationships if our current depth is less than the max
* depth
*/
numNodesWithPendingStates++;
}
break;
}
default: {
/*
* for all other states, there is work to be done
*/
numNodesWithPendingStates++;
}
}
}
LOG.debug(AaiUiMsgs.OUTSTANDING_WORK_PENDING_NODES,
String.valueOf(numNodesWithPendingStates));
int totalWorkOnHand = aaiWorkOnHand.get() + numNodesWithPendingStates;
return totalWorkOnHand;
}
/**
* Checks for out standing work.
*
* @return true, if successful
*/
private void processOutstandingWork(QueryParams queryParams) {
while (getTotalWorkOnHand() > 0) {
/*
* Force an evaluation of node depths before determining if we should limit state-based
* traversal or processing.
*/
processCurrentNodeStates(queryParams);
try {
Thread.sleep(10);
} catch (InterruptedException exc) {
LOG.error(AaiUiMsgs.PROCESSING_LOOP_INTERUPTED, exc.getMessage());
Thread.currentThread().interrupt();
return;
}
}
}
/* (non-Javadoc)
* @see org.onap.aai.sparky.viewandinspect.services.VisualizationContext#processSelfLinks(org.onap.aai.sparky.sync.entity.SearchableEntity, org.onap.aai.sparky.viewandinspect.entity.QueryParams)
*/
@Override
public void processSelfLinks(SearchableEntity searchtargetEntity, QueryParams queryParams) {
try {
if (searchtargetEntity == null) {
LOG.error(AaiUiMsgs.SELF_LINK_PROCESSING_ERROR, contextIdStr + " - Failed to"
+ " processSelfLinks, searchtargetEntity is null");
return;
}
long startTimeInMs = System.currentTimeMillis();
processSearchableEntity(searchtargetEntity, queryParams);
/*
* This method is blocking until we decouple it with a CountDownLatch await condition,
* and make the internal graph processing more event-y.
*/
processOutstandingWork(queryParams);
long totalResolveTime = (System.currentTimeMillis() - startTimeInMs);
long opTime = System.currentTimeMillis() - startTimeInMs;
LOG.info(AaiUiMsgs.ALL_TRANSACTIONS_RESOLVED, String.valueOf(totalResolveTime),
String.valueOf(totalLinksRetrieved.get()), String.valueOf(opTime));
} catch (Exception exc) {
LOG.error(AaiUiMsgs.VISUALIZATION_OUTPUT_ERROR, exc.getMessage());
}
}
/**
* Verify outbound neighbors.
*/
private void verifyOutboundNeighbors() {
for (ActiveInventoryNode srcNode : nodeCache.values()) {
for (String targetNodeId : srcNode.getOutboundNeighbors()) {
ActiveInventoryNode targetNode = nodeCache.get(targetNodeId);
if (targetNode != null && srcNode.getNodeId() != null) {
targetNode.addInboundNeighbor(srcNode.getNodeId());
if (this.visualizationConfigs.makeAllNeighborsBidirectional()) {
targetNode.addOutboundNeighbor(srcNode.getNodeId());
}
}
}
}
}
/**
* Evaluate node depths.
*/
private void evaluateNodeDepths() {
int numChanged = -1;
int numAttempts = 0;
while (numChanged != 0) {
numChanged = 0;
numAttempts++;
for (ActiveInventoryNode srcNode : nodeCache.values()) {
if (srcNode.getState() == NodeProcessingState.INIT) {
/*
* this maybe the only state that we don't want to to process the node depth on, because
* typically it won't have any valid fields set, and it may remain in a partial state
* until we have processed the self-link.
*/
continue;
}
for (String targetNodeId : srcNode.getOutboundNeighbors()) {
ActiveInventoryNode targetNode = nodeCache.get(targetNodeId);
if (targetNode != null) {
if (targetNode.changeDepth(srcNode.getNodeDepth() + 1)) {
numChanged++;
}
}
}
for (String targetNodeId : srcNode.getInboundNeighbors()) {
ActiveInventoryNode targetNode = nodeCache.get(targetNodeId);
if (targetNode != null) {
if (targetNode.changeDepth(srcNode.getNodeDepth() + 1)) {
numChanged++;
}
}
}
}
if (numAttempts >= MAX_DEPTH_EVALUATION_ATTEMPTS) {
LOG.info(AaiUiMsgs.MAX_EVALUATION_ATTEMPTS_EXCEEDED);
return;
}
}
if (LOG.isDebugEnabled()) {
if (numAttempts > 0) {
LOG.debug(AaiUiMsgs.DEBUG_GENERIC,
"Evaluate node depths completed in " + numAttempts + " attempts");
} else {
LOG.debug(AaiUiMsgs.DEBUG_GENERIC,
"Evaluate node depths completed in 0 attempts because all nodes at correct depth");
}
}
}
/**
* Gets the entity type primary key name.
*
* @param entityType the entity type
* @return the entity type primary key name
*/
private String getEntityTypePrimaryKeyName(String entityType) {
if (entityType == null) {
LOG.error(AaiUiMsgs.FAILED_TO_DETERMINE, "node primary key"
+ " name because entity type is null");
return null;
}
OxmEntityDescriptor descriptor = oxmEntityLookup.getEntityDescriptors().get(entityType);
if (descriptor == null) {
LOG.error(AaiUiMsgs.FAILED_TO_DETERMINE, "oxm entity"
+ " descriptor for entityType = " + entityType);
return null;
}
List<String> pkeyNames = descriptor.getPrimaryKeyAttributeNames();
if (pkeyNames == null || pkeyNames.size() == 0) {
LOG.error(AaiUiMsgs.FAILED_TO_DETERMINE, "node primary"
+ " key because descriptor primary key names is empty");
return null;
}
return NodeUtils.concatArray(pkeyNames, "/");
}
}
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