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Server side implementation of the asset analysis engine services (heart of the automated metadata discovery services).
/* SPDX-License-Identifier: Apache 2.0 */
/* Copyright Contributors to the ODPi Egeria project. */
package org.odpi.openmetadata.engineservices.assetanalysis.handlers;
import org.odpi.openmetadata.accessservices.discoveryengine.client.*;
import org.odpi.openmetadata.accessservices.governanceengine.client.GovernanceEngineClient;
import org.odpi.openmetadata.accessservices.governanceengine.client.GovernanceEngineConfigurationClient;
import org.odpi.openmetadata.adminservices.configuration.properties.EngineConfig;
import org.odpi.openmetadata.frameworks.auditlog.AuditLog;
import org.odpi.openmetadata.frameworks.connectors.ffdc.*;
import org.odpi.openmetadata.frameworks.discovery.*;
import org.odpi.openmetadata.frameworks.discovery.properties.*;
import org.odpi.openmetadata.frameworks.governanceaction.properties.ActionTargetElement;
import org.odpi.openmetadata.frameworks.governanceaction.properties.RequestSourceElement;
import org.odpi.openmetadata.governanceservers.enginehostservices.admin.GovernanceEngineHandler;
import org.odpi.openmetadata.governanceservers.enginehostservices.admin.GovernanceServiceCache;
import org.odpi.openmetadata.governanceservers.enginehostservices.admin.GovernanceServiceHandler;
import java.util.*;
/**
* The DiscoveryEngineHandler is responsible for running discovery services on demand. It is initialized
* with the configuration for the discovery services it supports along with the clients to the
* asset properties store and annotations store.
*/
public class DiscoveryEngineHandler extends GovernanceEngineHandler
{
private DiscoveryEngineClient discoveryEngineClient; /* Initialized in constructor */
private static final String supportGovernanceEngineType = "OpenDiscoveryEngine";
private static final String assetTypeName = "Asset";
/**
* Create a client-side object for calling a discovery engine.
*
* @param engineConfig the unique identifier of the discovery engine.
* @param serverName the name of the engine host server where the discovery engine is running
* @param serverUserId user id for the server to use
* @param configurationClient client to retrieve the configuration
* @param serverClient client used by the engine host services to control the execution of governance action requests
* @param discoveryEngineClient REST client for direct REST Calls to Discovery Engine OMAS - used by discovery services
* @param auditLog logging destination
* @param maxPageSize maximum number of results that can be returned in a single request
*/
public DiscoveryEngineHandler(EngineConfig engineConfig,
String serverName,
String serverUserId,
GovernanceEngineConfigurationClient configurationClient,
GovernanceEngineClient serverClient,
DiscoveryEngineClient discoveryEngineClient,
AuditLog auditLog,
int maxPageSize)
{
super(engineConfig, serverName, serverUserId, configurationClient, serverClient, auditLog, maxPageSize);
this.discoveryEngineClient = discoveryEngineClient;
}
/**
* Request the execution of a discovery service to explore a specific asset.
*
* @param assetGUID identifier of the asset to analyze.
* @param discoveryRequestType identifier of the type of discovery request to run - this determines which discovery service to run.
* @param analysisParameters name value properties to control the analysis
* @param annotationTypes list of the types of annotations to produce (and no others)
*
* @return unique id for the discovery request.
*
* @throws InvalidParameterException one of the parameters is null or invalid.
* @throws UserNotAuthorizedException user not authorized to issue this request.
* @throws PropertyServerException there was a problem with connecting to the metadata server or
* there is a problem with the set up of the discovery engine.
*/
public String discoverAsset(String assetGUID,
String discoveryRequestType,
Map analysisParameters,
List annotationTypes) throws InvalidParameterException,
UserNotAuthorizedException,
PropertyServerException
{
final String methodName = "discoverAsset";
super.validateGovernanceEngineInitialized(supportGovernanceEngineType, methodName);
GovernanceServiceCache discoveryServiceCache = super.getServiceCache(discoveryRequestType);
if (discoveryServiceCache != null)
{
return runDiscoveryService(assetGUID, discoveryRequestType, analysisParameters, annotationTypes, discoveryServiceCache);
}
return null;
}
/**
* Request the execution of a discovery service for each asset that is found (limited by the supported zones of the
* Discovery Engine OMAS).
*
* @param discoveryRequestType identifier of the type of discovery to run - this determines which discovery service to run.
* @param analysisParameters name value properties to control the analysis
* @param annotationTypes list of the types of annotations to produce (and no others)
*
* @throws InvalidParameterException one of the parameters is null or invalid.
* @throws UserNotAuthorizedException user not authorized to issue this request.
* @throws PropertyServerException there was a problem with connecting to the metadata server or
* there is a problem with the set up of the discovery engine.
*/
public void scanAllAssets(String discoveryRequestType,
Map analysisParameters,
List annotationTypes) throws InvalidParameterException,
UserNotAuthorizedException,
PropertyServerException
{
final String methodName = "scanAllAssets";
super.validateGovernanceEngineInitialized(supportGovernanceEngineType, methodName);
GovernanceServiceCache discoveryServiceCache = super.getServiceCache(discoveryRequestType);
if (discoveryServiceCache != null)
{
int startingFrom = 0;
boolean moreToReceive = true;
while (moreToReceive)
{
List assets = discoveryEngineClient.getAssets(serverUserId, startingFrom, maxPageSize);
if ((assets != null) && (! assets.isEmpty()))
{
for (String assetGUID : assets)
{
if (assetGUID != null)
{
runDiscoveryService(assetGUID,
discoveryRequestType,
analysisParameters,
annotationTypes,
discoveryServiceCache);
}
}
if (assets.size() < maxPageSize)
{
moreToReceive = false;
}
else
{
startingFrom = startingFrom + maxPageSize;
}
}
else
{
moreToReceive = false;
}
}
}
}
/**
* Run an instance of a governance action service in its own thread and return the handler (for disconnect processing).
*
* @param governanceActionGUID unique identifier of the asset to analyse
* @param requestType unique identifier of the asset that the annotations should be attached to
* @param requestParameters name-value properties to control the governance action service
* @param requestSourceElements metadata elements associated with the request to the governance action service
* @param actionTargetElements metadata elements that need to be worked on by the governance action service
*
* @return service handler for this request
*
* @throws InvalidParameterException one of the parameters is null or invalid.
* @throws UserNotAuthorizedException user not authorized to issue this request.
* @throws PropertyServerException there was a problem detected by the governance action engine.
*/
@Override
public GovernanceServiceHandler runGovernanceService(String governanceActionGUID,
String requestType,
Map requestParameters,
List requestSourceElements,
List actionTargetElements) throws InvalidParameterException,
UserNotAuthorizedException,
PropertyServerException
{
final String methodName = "runGovernanceService";
super.validateGovernanceEngineInitialized(supportGovernanceEngineType, methodName);
GovernanceServiceCache governanceServiceCache = super.getServiceCache(requestType);
if ((governanceServiceCache != null) && (actionTargetElements != null) && (! actionTargetElements.isEmpty()))
{
String assetGUID = null;
for (ActionTargetElement actionTargetElement : actionTargetElements)
{
if ((actionTargetElement != null)
&& (actionTargetElement.getTargetElement() != null)
&& (actionTargetElement.getTargetElement().getElementType() != null))
{
String typeName = actionTargetElement.getTargetElement().getElementType().getElementTypeName();
List superTypeNames = actionTargetElement.getTargetElement().getElementType().getElementSuperTypeNames();
if ((assetTypeName.equals(typeName)) || ((superTypeNames != null) && (superTypeNames.contains(assetTypeName))))
{
assetGUID = actionTargetElement.getTargetElement().getElementGUID();
}
}
}
DiscoveryServiceHandler discoveryServiceHandler = this.getDiscoveryServiceHandler(assetGUID,
requestType,
requestParameters,
null,
governanceActionGUID,
governanceServiceCache);
Thread thread = new Thread(discoveryServiceHandler, governanceServiceCache.getGovernanceServiceName() + assetGUID + new Date().toString());
thread.start();
return discoveryServiceHandler;
}
return null;
}
/**
* Run an instance of a discovery service in its own thread.
*
* @param assetGUID unique identifier of the asset to analyse
* @param discoveryRequestType type of discovery
* @param suppliedAnalysisParameters parameters for the discovery
* @param annotationTypes types of annotations that can be returned
* @param governanceServiceCache factory for discovery services.
*
* @return unique identifier for this request.
*
* @throws InvalidParameterException one of the parameters is null or invalid.
* @throws UserNotAuthorizedException user not authorized to issue this request.
* @throws PropertyServerException there was a problem detected by the discovery engine.
*/
private String runDiscoveryService(String assetGUID,
String discoveryRequestType,
Map suppliedAnalysisParameters,
List annotationTypes,
GovernanceServiceCache governanceServiceCache) throws InvalidParameterException,
UserNotAuthorizedException,
PropertyServerException
{
DiscoveryServiceHandler discoveryServiceHandler = this.getDiscoveryServiceHandler(assetGUID,
discoveryRequestType,
suppliedAnalysisParameters,
annotationTypes,
null,
governanceServiceCache);
Thread thread = new Thread(discoveryServiceHandler, governanceServiceCache.getGovernanceServiceName() + assetGUID + new Date().toString());
thread.start();
return discoveryServiceHandler.getDiscoveryReportGUID();
}
/**
* Create an instance of a discovery service handler.
*
* @param assetGUID unique identifier of the asset to analyse
* @param discoveryRequestType type of discovery
* @param suppliedAnalysisParameters parameters for the discovery
* @param annotationTypes types of annotations that can be returned
* @param governanceActionGUID unique identifier of the associated governance action entity
* @param governanceServiceCache factory for discovery services
*
* @return unique identifier for this request.
*
* @throws InvalidParameterException one of the parameters is null or invalid.
* @throws UserNotAuthorizedException user not authorized to issue this request.
* @throws PropertyServerException there was a problem detected by the discovery engine.
*/
private DiscoveryServiceHandler getDiscoveryServiceHandler(String assetGUID,
String discoveryRequestType,
Map suppliedAnalysisParameters,
List annotationTypes,
String governanceActionGUID,
GovernanceServiceCache governanceServiceCache) throws InvalidParameterException,
UserNotAuthorizedException,
PropertyServerException
{
Date creationTime = new Date();
Map analysisParameters = suppliedAnalysisParameters;
if (analysisParameters == null)
{
analysisParameters = governanceServiceCache.getRequestParameters(discoveryRequestType);
}
String reportQualifiedName = "DiscoveryAnalysisReport:" + discoveryRequestType + ":" + assetGUID + ":" + creationTime.toString();
String reportDisplayName = "Discovery Analysis Report for " + assetGUID;
String reportDescription = "This is the " + discoveryRequestType + " discovery analysis report for asset " + assetGUID + " generated at " +
creationTime.toString() +
" by the " + governanceServiceCache.getGovernanceServiceName() + " discovery service running on discovery engine " +
governanceEngineProperties.getDisplayName() + " (" + governanceEngineName + ").";
DiscoveryAnalysisReportClient discoveryAnalysisReportClient = new DiscoveryAnalysisReportClient(engineUserId,
DiscoveryRequestStatus.WAITING,
assetGUID,
analysisParameters,
reportQualifiedName,
reportDisplayName,
reportDescription,
governanceEngineGUID,
governanceServiceCache.getGovernanceServiceGUID(),
discoveryEngineClient);
discoveryAnalysisReportClient.setDiscoveryRequestStatus(DiscoveryRequestStatus.ACTIVATING);
DiscoveryAnnotationStore annotationStore = new DiscoveryAnnotationStoreClient(engineUserId,
assetGUID,
discoveryAnalysisReportClient,
discoveryEngineClient);
DiscoveryAssetStore assetStore = new DiscoveryAssetStoreClient(assetGUID,
engineUserId,
discoveryEngineClient);
DiscoveryAssetCatalogStore assetCatalogStore = new DiscoveryAssetCatalogStoreClient(engineUserId,
discoveryEngineClient,
maxPageSize);
DiscoveryContext discoveryContext = new DiscoveryContext(engineUserId,
assetGUID,
analysisParameters,
annotationTypes,
assetStore,
annotationStore,
assetCatalogStore);
return new DiscoveryServiceHandler(governanceEngineProperties,
governanceEngineGUID,
serverUserId,
governanceActionGUID,
serverClient,
discoveryRequestType,
governanceServiceCache.getGovernanceServiceGUID(),
governanceServiceCache.getGovernanceServiceName(),
governanceServiceCache.getNextGovernanceService(),
discoveryContext,
discoveryAnalysisReportClient.getDiscoveryReportGUID(),
auditLog);
}
/**
* Request the discovery report for a discovery request that has completed.
*
* @param discoveryRequestGUID identifier of the discovery request.
*
* @return discovery report
*
* @throws InvalidParameterException one of the parameters is null or invalid.
* @throws UserNotAuthorizedException user not authorized to issue this request.
* @throws PropertyServerException there was a problem connecting to the metadata server.
*/
public DiscoveryAnalysisReport getDiscoveryReport(String discoveryRequestGUID) throws InvalidParameterException,
UserNotAuthorizedException,
PropertyServerException
{
return discoveryEngineClient.getDiscoveryAnalysisReport(engineUserId, discoveryRequestGUID);
}
/**
* Return the annotations linked direction to the report.
*
* @param discoveryRequestGUID identifier of the discovery request.
* @param startingFrom initial position in the stored list.
* @param maximumResults maximum number of definitions to return on this call.
*
* @return list of annotations
*
* @throws InvalidParameterException one of the parameters is null or invalid.
* @throws UserNotAuthorizedException user not authorized to issue this request.
* @throws PropertyServerException there was a problem connecting to the metadata server.
*/
public List getDiscoveryReportAnnotations(String discoveryRequestGUID,
int startingFrom,
int maximumResults) throws InvalidParameterException,
UserNotAuthorizedException,
PropertyServerException
{
return discoveryEngineClient.getDiscoveryReportAnnotations(engineUserId,
discoveryRequestGUID,
startingFrom,
maximumResults);
}
/**
* Return any annotations attached to this annotation.
*
* @param annotationGUID anchor annotation
* @param startingFrom starting position in the list
* @param maximumResults maximum number of annotations that can be returned.
*
* @return list of Annotation objects
*
* @throws InvalidParameterException one of the parameters is null or invalid.
* @throws UserNotAuthorizedException user not authorized to issue this request.
* @throws PropertyServerException there was a problem connecting to the metadata server.
*/
public List getExtendedAnnotations(String annotationGUID,
int startingFrom,
int maximumResults) throws InvalidParameterException,
UserNotAuthorizedException,
PropertyServerException
{
return discoveryEngineClient.getExtendedAnnotations(engineUserId,
annotationGUID,
startingFrom,
maximumResults);
}
/**
* Retrieve a single annotation by unique identifier. This call is typically used to retrieve the latest values
* for an annotation.
*
* @param annotationGUID unique identifier of the annotation
*
* @return Annotation object
*
* @throws InvalidParameterException one of the parameters is null or invalid.
* @throws UserNotAuthorizedException user not authorized to issue this request.
* @throws PropertyServerException there was a problem connecting to the metadata server.
*/
public Annotation getAnnotation(String annotationGUID) throws InvalidParameterException,
UserNotAuthorizedException,
PropertyServerException
{
return discoveryEngineClient.getAnnotation(engineUserId, annotationGUID);
}
}
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