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SensinactDigitalTwinImpl.java
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SensinactDigitalTwinImpl.java
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/*********************************************************************
* Copyright (c) 2023 Contributors to the Eclipse Foundation.
*
* This program and the accompanying materials are made
* available under the terms of the Eclipse Public License 2.0
* which is available at https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* Kentyou - initial implementation
**********************************************************************/
package org.eclipse.sensinact.core.twin.impl;
import java.time.Instant;
import java.util.List;
import java.util.Optional;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.function.Predicate;
import java.util.stream.Collectors;
import java.util.stream.Stream;
import org.eclipse.emf.ecore.EClass;
import org.eclipse.emf.ecore.EStructuralFeature;
import org.eclipse.emf.ecore.ETypedElement;
import org.eclipse.emf.ecore.EcorePackage;
import org.eclipse.sensinact.core.command.impl.CommandScopedImpl;
import org.eclipse.sensinact.core.emf.twin.SensinactEMFDigitalTwin;
import org.eclipse.sensinact.core.emf.twin.SensinactEMFProvider;
import org.eclipse.sensinact.core.impl.snapshot.ProviderSnapshotImpl;
import org.eclipse.sensinact.core.impl.snapshot.ResourceSnapshotImpl;
import org.eclipse.sensinact.core.impl.snapshot.ServiceSnapshotImpl;
import org.eclipse.sensinact.core.model.ResourceType;
import org.eclipse.sensinact.core.model.nexus.ModelNexus;
import org.eclipse.sensinact.core.model.nexus.emf.EMFUtil;
import org.eclipse.sensinact.core.snapshot.ProviderSnapshot;
import org.eclipse.sensinact.core.snapshot.ResourceSnapshot;
import org.eclipse.sensinact.core.snapshot.ServiceSnapshot;
import org.eclipse.sensinact.core.twin.SensinactResource;
import org.eclipse.sensinact.core.twin.SensinactService;
import org.eclipse.sensinact.core.twin.TimedValue;
import org.eclipse.sensinact.gateway.geojson.GeoJsonObject;
import org.eclipse.sensinact.model.core.provider.Metadata;
import org.eclipse.sensinact.model.core.provider.Provider;
import org.eclipse.sensinact.model.core.provider.ProviderPackage;
import org.eclipse.sensinact.model.core.provider.Service;
import org.osgi.util.promise.PromiseFactory;
public class SensinactDigitalTwinImpl extends CommandScopedImpl implements SensinactEMFDigitalTwin {
private final ModelNexus nexusImpl;
private final PromiseFactory pf;
public SensinactDigitalTwinImpl(ModelNexus nexusImpl, PromiseFactory pf) {
super(new AtomicBoolean(true));
this.nexusImpl = nexusImpl;
this.pf = pf;
}
/**
* Returns the known providers
*/
public List<SensinactProviderImpl> getProviders() {
checkValid();
return nexusImpl.getProviders().stream().map(this::toProvider).collect(Collectors.toList());
}
/*
* (non-Javadoc)
*
* @see org.eclipse.sensinact.core.twin.SensinactDigitalTwin#getProvider(org.
* eclipse.emf.ecore.EClass, java.lang.String)
*/
@Override
public SensinactProviderImpl getProvider(EClass model, String id) {
if (model != ProviderPackage.Literals.PROVIDER
|| !model.getEAllSuperTypes().contains(ProviderPackage.Literals.PROVIDER)) {
throw new IllegalArgumentException("The requested eClass must have Provider as a super class");
}
final Provider provider = nexusImpl.getProvider(model, id);
if (provider == null) {
return null;
}
return toProvider(provider);
}
/**
* Returns the known providers
*/
public List<SensinactProviderImpl> getProviders(String modelPackageUri, String model) {
checkValid();
return nexusImpl.getProviders(modelPackageUri, model).stream().map(this::toProvider)
.collect(Collectors.toList());
}
@Override
public SensinactProviderImpl getProvider(String modelPackageUri, String model, String providerName) {
checkValid();
final Provider provider = nexusImpl.getProvider(modelPackageUri, model, providerName);
if (provider == null) {
return null;
}
return toProvider(provider);
}
@Override
public SensinactProviderImpl getProvider(String providerName) {
checkValid();
final Provider provider = nexusImpl.getProvider(providerName);
if (provider == null) {
return null;
}
return toProvider(provider);
}
@Override
public SensinactEMFProvider createProvider(String modelPackageUri, String model, String providerName) {
return toProvider(nexusImpl.createProviderInstance(modelPackageUri, model, providerName));
}
@Override
public SensinactEMFProvider createProvider(String modelPackageUri, String model, String providerName,
Instant instant) {
return instant == null ? createProvider(model, providerName)
: toProvider(nexusImpl.createProviderInstance(modelPackageUri, model, providerName, instant));
}
@Override
public SensinactEMFProvider createProvider(Provider provider) {
return createProvider(provider.eClass().getEPackage().getNsURI(), EMFUtil.getModelName(provider.eClass()),
provider.getId());
}
@Override
public SensinactServiceImpl getService(String modelPackageUri, String model, String providerName, String service) {
checkValid();
return getService(nexusImpl.getProvider(modelPackageUri, model, providerName), model, service);
}
@Override
public SensinactServiceImpl getService(String providerName, String service) {
checkValid();
Provider provider = nexusImpl.getProvider(providerName);
return getService(provider, nexusImpl.getProviderModel(providerName), service);
}
/*
* (non-Javadoc)
*
* @see
* org.eclipse.sensinact.core.twin.SensinactDigitalTwin#getService(java.lang.
* String, java.lang.String, java.lang.String)
*/
@Override
public SensinactService getService(String model, String providerName, String service) {
return getService(null, model, providerName, service);
}
private SensinactServiceImpl getService(Provider provider, String model, String serviceName) {
if (provider == null) {
return null;
}
EClass serviceType = provider.getServiceEClass(serviceName);
if (serviceType == null) {
return null;
}
final SensinactProviderImpl snProvider = toProvider(provider);
return toService(provider, serviceName, serviceType, snProvider);
}
/*
* (non-Javadoc)
*
* @see
* org.eclipse.sensinact.core.twin.SensinactDigitalTwin#getResource(java.lang.
* String, java.lang.String, java.lang.String, java.lang.String)
*/
@Override
public SensinactResource getResource(String model, String providerName, String service, String resource) {
return getResource(null, model, providerName, service, resource);
}
@Override
public SensinactResourceImpl getResource(String modelPackageUri, String model, String providerName, String service,
String resource) {
checkValid();
return getResource(nexusImpl.getProvider(modelPackageUri, model, providerName), model, service, resource);
}
public SensinactResourceImpl getResource(String providerName, String service, String resource) {
checkValid();
Provider provider = nexusImpl.getProvider(providerName);
return getResource(provider, nexusImpl.getProviderModel(providerName), service, resource);
}
private SensinactResourceImpl getResource(Provider provider, String model, String serviceName, String resource) {
if (provider == null) {
return null;
}
final EClass serviceEClass = provider.getServiceEClass(serviceName);
if (serviceEClass == null) {
return null;
}
final ETypedElement rcFeature = Optional.ofNullable(serviceEClass.getEStructuralFeature(resource))
.map(ETypedElement.class::cast)
.or(() -> serviceEClass.getEOperations().stream()
.filter(o -> o.getEContainingClass().getEPackage() != EcorePackage.eINSTANCE)
.filter(o -> resource.equals(o.getName())).map(ETypedElement.class::cast).findFirst())
.orElseGet(() -> null);
if (rcFeature == null) {
return null;
}
// Construct the resource
final SensinactProviderImpl snProvider = toProvider(provider);
final SensinactServiceImpl snService = toService(provider, serviceName, serviceEClass, snProvider);
return toResource(snService, provider, serviceName, rcFeature);
}
public <T> TimedValue<T> getResourceValue(String modelPackageUri, String model, String providerName, String service,
String resource, Class<T> type) {
checkValid();
return getResourceValue(nexusImpl.getProvider(modelPackageUri, model, providerName), service, resource, type);
}
public <T> TimedValue<T> getResourceValue(String providerName, String service, String resource, Class<T> type) {
checkValid();
return getResourceValue(nexusImpl.getProvider(providerName), service, resource, type);
}
private <T> TimedValue<T> getResourceValue(Provider provider, String serviceName, String resource, Class<T> type) {
if (type == null) {
throw new IllegalArgumentException("Resource type must not be null");
}
if (provider == null) {
return null;
}
final Service svc = provider.getService(serviceName);
if (svc == null) {
return null;
}
final EStructuralFeature rcFeature = svc.eClass().getEStructuralFeature(resource);
if (rcFeature == null) {
return null;
}
// Get the resource metadata
final Metadata metadata = svc.getMetadata().get(rcFeature);
final Instant timestamp;
if (metadata != null) {
timestamp = metadata.getTimestamp();
} else {
timestamp = null;
}
// Check value type
final Object rawValue = svc.eGet(rcFeature);
if (rawValue == null) {
return new TimedValueImpl<T>(null, timestamp);
} else if (!type.isAssignableFrom(rawValue.getClass())) {
throw new IllegalArgumentException(
"Expected a " + type.getName() + " but resource is a " + rawValue.getClass().getName());
} else {
return new TimedValueImpl<T>(type.cast(rawValue), timestamp);
}
}
private SensinactProviderImpl toProvider(final Provider modelProvider) {
return new SensinactProviderImpl(active, modelProvider, nexusImpl, pf);
}
private SensinactResourceImpl toResource(final SensinactService parent, Provider provider, String serviceName,
final ETypedElement rcFeature) {
return new SensinactResourceImpl(active, parent, provider, serviceName, rcFeature,
rcFeature.getEType().getInstanceClass(), nexusImpl, pf);
}
private SensinactServiceImpl toService(Provider provider, String serviceName, final EClass serviceEClass,
final SensinactProviderImpl snProvider) {
return new SensinactServiceImpl(active, snProvider, provider, serviceName, serviceEClass, nexusImpl, pf);
}
/**
* Fills the fields of the given resource snapshot
*
* @param rcSnapshot Resource snapshot
*/
private void fillInResource(final ResourceSnapshotImpl rcSnapshot) {
// Add resource value
if (rcSnapshot.getResourceType() == ResourceType.ACTION) {
// Skip values for actions
return;
}
// Get the resource metadata
final ETypedElement rcFeature = rcSnapshot.getFeature();
final Service svc = rcSnapshot.getService().getModelService();
if (!svc.eIsSet((EStructuralFeature) rcFeature)) {
return;
}
final Metadata metadata = svc == null ? null : svc.getMetadata().get(rcFeature);
final Instant timestamp;
if (metadata != null) {
timestamp = metadata.getTimestamp();
} else {
timestamp = null;
}
rcSnapshot.setValue(
new TimedValueImpl<Object>(svc == null ? null : svc.eGet((EStructuralFeature) rcFeature), timestamp));
}
@Override
public List<ProviderSnapshot> filteredSnapshot(Predicate<GeoJsonObject> geoFilter,
Predicate<ProviderSnapshot> providerFilter, Predicate<ServiceSnapshot> svcFilter,
Predicate<ResourceSnapshot> rcFilter) {
final Instant snapshotTime = Instant.now();
// Filter providers with their API model
Stream<ProviderSnapshotImpl> providersStream = nexusImpl.getProviders().stream()
.map(p -> new ProviderSnapshotImpl(p.eClass().getEPackage().getNsURI(),
EMFUtil.getModelName(p.eClass()), p, snapshotTime));
if (providerFilter != null) {
providersStream = providersStream.filter(providerFilter);
}
// Filter providers by location (raw provider)
if (geoFilter != null) {
// Filter the provider location
providersStream = providersStream.filter(p -> geoFilter.test(p.getModelProvider().getAdmin().getLocation()));
}
// Filter providers according to their services
providersStream = providersStream.map(p -> {
final Provider modelProvider = p.getModelProvider();
nexusImpl.getServiceInstancesForProvider(modelProvider)
.forEach((k, v) -> p.add(new ServiceSnapshotImpl(p, k, v, snapshotTime)));
return p;
});
if (svcFilter != null) {
providersStream = providersStream.filter(p -> p.getServices().stream().anyMatch(svcFilter));
}
// Filter providers according to their resources
providersStream = providersStream.map(p -> {
p.getServices().stream().forEach(s -> {
nexusImpl.getResourcesForService(s.getModelService().eClass())
.forEach(f -> s.add(new ResourceSnapshotImpl(s, f, snapshotTime)));
});
return p;
});
if (rcFilter != null) {
providersStream = providersStream
.filter(p -> p.getServices().stream().anyMatch(s -> s.getResources().stream().anyMatch(rcFilter)));
}
// Add resource value
providersStream = providersStream.map(p -> {
p.getServices().stream().forEach(s -> {
s.getResources().stream().forEach(this::fillInResource);
});
p.filterEmptyServices();
return p;
});
return providersStream.collect(Collectors.toList());
}
@Override
public ProviderSnapshot snapshotProvider(String providerName) {
final Instant snapshotTime = Instant.now();
final Provider nexusProvider = nexusImpl.getProvider(providerName);
if (nexusProvider == null) {
// Provider not found
return null;
}
final ProviderSnapshotImpl providerSnapshot = new ProviderSnapshotImpl(
nexusImpl.getProviderPackageUri(nexusProvider.getId()),
nexusImpl.getProviderModel(nexusProvider.getId()), nexusProvider, snapshotTime);
// Add all services
nexusImpl.getServiceInstancesForProvider(nexusProvider).forEach((serviceName, service) -> {
// Get the service
final ServiceSnapshotImpl svcSnapshot = new ServiceSnapshotImpl(providerSnapshot, serviceName, service,
snapshotTime);
// Get the resources
nexusImpl.getResourcesForService(service.eClass()).forEach(rcFeature -> {
final ResourceSnapshotImpl rcSnapshot = new ResourceSnapshotImpl(svcSnapshot, rcFeature, snapshotTime);
fillInResource(rcSnapshot);
svcSnapshot.add(rcSnapshot);
});
providerSnapshot.add(svcSnapshot);
});
providerSnapshot.filterEmptyServices();
return providerSnapshot;
}
@Override
public ServiceSnapshot snapshotService(String providerName, String serviceName) {
final Instant snapshotTime = Instant.now();
final Provider nexusProvider = nexusImpl.getProvider(providerName);
if (nexusProvider == null) {
// Provider not found
return null;
}
Service service = nexusImpl.getServiceInstancesForProvider(nexusProvider).get(serviceName);
if (service == null) {
// Service not found
return null;
}
// Minimal snapshot of the provider owning the service
final ProviderSnapshotImpl providerSnapshot = new ProviderSnapshotImpl(
nexusImpl.getProviderPackageUri(nexusProvider.getId()),
nexusImpl.getProviderModel(nexusProvider.getId()), nexusProvider, snapshotTime);
// Describe the service
final ServiceSnapshotImpl svcSnapshot = new ServiceSnapshotImpl(providerSnapshot, serviceName, service,
snapshotTime);
providerSnapshot.add(svcSnapshot);
// Get the resources
final EStructuralFeature sf = nexusProvider.eClass().getEStructuralFeature(svcSnapshot.getName());
nexusImpl.getResourcesForService((EClass) sf.getEType()).forEach(rcFeature -> {
final ResourceSnapshotImpl rcSnapshot = new ResourceSnapshotImpl(svcSnapshot, rcFeature, snapshotTime);
fillInResource(rcSnapshot);
svcSnapshot.add(rcSnapshot);
});
return svcSnapshot;
}
@Override
public ResourceSnapshot snapshotResource(String providerName, String serviceName, String resourceName) {
final Instant snapshotTime = Instant.now();
final Provider nexusProvider = nexusImpl.getProvider(providerName);
if (nexusProvider == null) {
// Provider not found
return null;
}
Service service = nexusImpl.getServiceInstancesForProvider(nexusProvider).get(serviceName);
if (service == null) {
// Service not found
return null;
}
final EStructuralFeature sf = nexusProvider.eClass().getEStructuralFeature(serviceName);
final Optional<ETypedElement> foundRc = nexusImpl.getResourcesForService((EClass) sf.getEType())
.filter(f -> f.getName().equals(resourceName)).findFirst();
if (foundRc.isEmpty()) {
// Resource not found
return null;
}
// Minimal description of the provider owning the service
final ProviderSnapshotImpl providerSnapshot = new ProviderSnapshotImpl(
nexusImpl.getProviderPackageUri(nexusProvider.getId()),
nexusImpl.getProviderModel(nexusProvider.getId()), nexusProvider, snapshotTime);
// Minimal description of the service owning the resource
final ServiceSnapshotImpl svcSnapshot = new ServiceSnapshotImpl(providerSnapshot, serviceName, service,
snapshotTime);
providerSnapshot.add(svcSnapshot);
// Describe the resource
final ResourceSnapshotImpl rcSnapshot = new ResourceSnapshotImpl(svcSnapshot, foundRc.get(), snapshotTime);
fillInResource(rcSnapshot);
svcSnapshot.add(rcSnapshot);
return rcSnapshot;
}
/*
* (non-Javadoc)
*
* @see
* org.eclipse.sensinact.core.emf.twin.SensinactEMFDigitalTwin#getProviders(java
* .lang.String)
*/
@Override
public List<? extends SensinactEMFProvider> getProviders(String model) {
return getProviders(null, model);
}
/*
* (non-Javadoc)
*
* @see
* org.eclipse.sensinact.core.emf.twin.SensinactEMFDigitalTwin#getProvider(java.
* lang.String, java.lang.String)
*/
@Override
public SensinactEMFProvider getProvider(String model, String providerName) {
return getProvider(null, model, providerName);
}
/*
* (non-Javadoc)
*
* @see
* org.eclipse.sensinact.core.emf.twin.SensinactEMFDigitalTwin#createProvider(
* java.lang.String, java.lang.String)
*/
@Override
public SensinactEMFProvider createProvider(String model, String providerName) {
return createProvider(null, model, providerName);
}
/*
* (non-Javadoc)
*
* @see
* org.eclipse.sensinact.core.emf.twin.SensinactEMFDigitalTwin#createProvider(
* java.lang.String, java.lang.String, java.time.Instant)
*/
@Override
public SensinactEMFProvider createProvider(String model, String providerName, Instant created) {
return createProvider(null, model, providerName, created);
}
}