/
BaseEntityRepositoryACM.java
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/
BaseEntityRepositoryACM.java
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/**
* Copyright (c) 2023 Bosch.IO GmbH and others
*
* 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
*/
package org.eclipse.hawkbit.repository.jpa.repository;
import lombok.extern.slf4j.Slf4j;
import org.eclipse.hawkbit.repository.exception.EntityNotFoundException;
import org.eclipse.hawkbit.repository.exception.InsufficientPermissionException;
import org.eclipse.hawkbit.repository.jpa.acm.AccessController;
import org.eclipse.hawkbit.repository.jpa.model.AbstractJpaTenantAwareBaseEntity;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.Pageable;
import org.springframework.data.domain.Slice;
import org.springframework.data.domain.Sort;
import org.springframework.data.jpa.domain.Specification;
import org.springframework.data.repository.query.FluentQuery;
import org.springframework.lang.NonNull;
import org.springframework.lang.Nullable;
import jakarta.transaction.Transactional;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;
import java.util.HashSet;
import java.util.List;
import java.util.Objects;
import java.util.Optional;
import java.util.Set;
import java.util.function.Function;
@Slf4j
public class BaseEntityRepositoryACM<T extends AbstractJpaTenantAwareBaseEntity> implements BaseEntityRepository<T> {
private final BaseEntityRepository<T> repository;
private final AccessController<T> accessController;
BaseEntityRepositoryACM(final BaseEntityRepository<T> repository, final AccessController<T> accessController) {
this.repository = repository;
this.accessController = accessController;
}
@SuppressWarnings("unchecked")
static <T extends AbstractJpaTenantAwareBaseEntity, R extends BaseEntityRepository<T>> R of(
final R repository, @NonNull final AccessController<T> accessController) {
Objects.requireNonNull(repository);
Objects.requireNonNull(accessController);
final BaseEntityRepositoryACM<T> repositoryACM =
new BaseEntityRepositoryACM<>(repository, accessController);
final R acmProxy = (R) Proxy.newProxyInstance(
Thread.currentThread().getContextClassLoader(),
repository.getClass().getInterfaces(),
(proxy, method, args) -> {
try {
try {
// TODO - cache mapping so to speed things
final Method delegateMethod =
BaseEntityRepositoryACM.class.getDeclaredMethod(
method.getName(), method.getParameterTypes());
return delegateMethod.invoke(repositoryACM, args);
} catch (final NoSuchMethodException e) {
// call to repository itself
}
if (method.getName().startsWith("find") || method.getName().startsWith("get")) {
final Object result = method.invoke(repository, args);
if (Iterable.class.isAssignableFrom(method.getReturnType())) {
for (final Object e : (Iterable<?>) result) {
if (repository.getDomainClass().isAssignableFrom(e.getClass())) {
accessController.assertOperationAllowed(AccessController.Operation.READ, (T) e);
}
}
} else if (Optional.class.isAssignableFrom(method.getReturnType()) && ((Optional<?>) result)
.filter(value -> repository.getDomainClass().isAssignableFrom(value.getClass()))
.isPresent()) {
return ((Optional<T>) result).filter(
t -> isOperationAllowed(AccessController.Operation.READ, t, accessController));
} else if (repository.getDomainClass().isAssignableFrom(method.getReturnType())) {
accessController.assertOperationAllowed(AccessController.Operation.READ, (T) result);
}
return result;
} else if ("toString".equals(method.getName()) && method.getParameterCount() == 0) {
return BaseEntityRepositoryACM.class.getSimpleName() +
"(repository: " + repository + ", accessController: " + accessController + ")";
} else {
return method.invoke(repository, args);
}
} catch (final InvocationTargetException e) {
throw e.getCause() == null ? e : e.getCause();
}
});
log.info("Proxy created -> {}", acmProxy);
return acmProxy;
}
@Override
@NonNull
public Optional<T> findById(@NonNull final Long id) {
return findOne(byIdSpec(id));
}
@Override
@NonNull
public List<T> findAll() {
return findAll((Specification<T>) null);
}
@Override
@NonNull
public List<T> findAllById(@NonNull final Iterable<Long> ids) {
return findAll(byIdsSpec(ids));
}
@Override
public boolean existsById(@NonNull final Long id) {
return exists(byIdSpec(id));
}
@Override
public long count() {
return count(null);
}
@Override
public void delete(@NonNull final T entity) {
accessController.assertOperationAllowed(AccessController.Operation.DELETE, entity);
repository.delete(entity);
}
@Override
public void deleteById(@NonNull final Long id) {
if (!exists(AccessController.Operation.READ, byIdSpec(id))) {
throw new EntityNotFoundException(repository.getDomainClass(), id);
}
if (!exists(AccessController.Operation.DELETE, byIdSpec(id))) {
throw new InsufficientPermissionException();
}
repository.deleteById(id);
}
@Override
public void deleteAllById(@NonNull final Iterable<? extends Long> ids) {
final Set<Long> idList = toSetDistinct(ids);
if (count(AccessController.Operation.DELETE, byIdsSpec(idList)) != idList.size()) {
throw new InsufficientPermissionException("Has at least one id that is not allowed for deletion!");
}
repository.deleteAllById(idList);
}
@Override
public void deleteAll(@NonNull final Iterable<? extends T> entities) {
accessController.assertOperationAllowed(AccessController.Operation.DELETE, entities);
repository.deleteAll(entities);
}
@Override
public void deleteAll() {
// TODO - shall we remove deleteByTenant and implement this method instead?
// if (accessController.getAccessRules(AccessController.Operation.DELETE).isPresent()) {
// throw new InsufficientPermissionException(
// "DELETE operation has restriction for given context! deleteAll can't be executed!");
// }
// repository.deleteAll();
throw new UnsupportedOperationException();
}
@Override
@NonNull
public <S extends T> S save(@NonNull final S entity) {
accessController.assertOperationAllowed(AccessController.Operation.UPDATE, entity);
return repository.save(entity);
}
@Override
public <S extends T> List<S> saveAll(final Iterable<S> entities) {
accessController.assertOperationAllowed(AccessController.Operation.UPDATE, entities);
return repository.saveAll(entities);
}
@Override
@NonNull
public Optional<T> findOne(final Specification<T> spec) {
return repository.findOne(accessController.appendAccessRules(AccessController.Operation.READ, spec));
}
@Override
@NonNull
public Iterable<T> findAll(@NonNull final Sort sort) {
return findAll(null, sort);
}
@Override
@NonNull
public Page<T> findAll(@NonNull final Pageable pageable) {
return findAll(null, pageable);
}
@Override
@NonNull
public List<T> findAll(final Specification<T> spec) {
return repository.findAll(accessController.appendAccessRules(AccessController.Operation.READ, spec));
}
@Override
@NonNull
public Page<T> findAll(final Specification<T> spec, @NonNull final Pageable pageable) {
return repository.findAll(accessController.appendAccessRules(AccessController.Operation.READ, spec), pageable);
}
@Override
@NonNull
public List<T> findAll(final Specification<T> spec, @NonNull final Sort sort) {
return repository.findAll(accessController.appendAccessRules(AccessController.Operation.READ, spec), sort);
}
@Override
public <S extends T, R> R findBy(final Specification<T> spec,
final Function<FluentQuery.FetchableFluentQuery<S>, R> queryFunction) {
return repository.findBy(accessController.appendAccessRules(AccessController.Operation.READ, spec), queryFunction);
}
@Override
public boolean exists(@NonNull final Specification<T> spec) {
return repository.exists(
Objects.requireNonNull(accessController.appendAccessRules(AccessController.Operation.READ, spec)));
}
@Override
public long delete(final Specification<T> spec) {
return repository.delete(accessController.appendAccessRules(AccessController.Operation.DELETE, spec));
}
@Override
public long count(final Specification<T> spec) {
return repository.count(accessController.appendAccessRules(AccessController.Operation.READ, spec));
}
@Override
public Slice<T> findAllWithoutCount(final Pageable pageable) {
return findAllWithoutCount(null, pageable);
}
@Override
public Slice<T> findAllWithoutCount(final Specification<T> spec, final Pageable pageable) {
return repository.findAllWithoutCount(
accessController.appendAccessRules(AccessController.Operation.READ, spec), pageable);
}
@Override
@Transactional
@NonNull
public <S extends T> S save(@Nullable AccessController.Operation operation, @NonNull final S entity) {
if (operation != null) {
accessController.assertOperationAllowed(operation, entity);
}
return repository.save(entity);
}
@Override
@Transactional
public <S extends T> List<S> saveAll(@Nullable AccessController.Operation operation, final Iterable<S> entities) {
if (operation != null) {
accessController.assertOperationAllowed(operation, entities);
}
return repository.saveAll(entities);
}
@NonNull
public Optional<T> findOne(@Nullable AccessController.Operation operation, @Nullable Specification<T> spec) {
if (operation == null) {
return repository.findOne(spec);
} else {
return repository.findOne(accessController.appendAccessRules(operation, spec));
}
}
@Override
@NonNull
public List<T> findAll(@Nullable final AccessController.Operation operation, @Nullable final Specification<T> spec) {
if (operation == null) {
return repository.findAll(spec);
} else {
return repository.findAll(accessController.appendAccessRules(operation, spec));
}
}
@Override
@NonNull
public boolean exists(@Nullable AccessController.Operation operation, Specification<T> spec) {
if (operation == null) {
return repository.exists(spec);
} else {
return repository.exists(
Objects.requireNonNull(accessController.appendAccessRules(operation, spec)));
}
}
@Override
@NonNull
public long count(@Nullable final AccessController.Operation operation, @Nullable final Specification<T> spec) {
if (operation == null) {
return repository.count(spec);
} else {
return repository.count(accessController.appendAccessRules(operation, spec));
}
}
@Override
@NonNull
public Slice<T> findAllWithoutCount(
@Nullable final AccessController.Operation operation, @Nullable Specification<T> spec, Pageable pageable) {
if (operation == null) {
return repository.findAllWithoutCount(spec, pageable);
} else {
return repository.findAllWithoutCount(accessController.appendAccessRules(operation, spec), pageable);
}
}
@Override
@NonNull
public Class<T> getDomainClass() {
return repository.getDomainClass();
}
@Override
public Optional<AccessController<T>> getAccessController() {
return Optional.of(accessController);
}
@Override
public void deleteByTenant(final String tenant) {
if (accessController.getAccessRules(AccessController.Operation.DELETE).isPresent()) {
throw new InsufficientPermissionException(
"DELETE operation has restriction for given context! deleteAll can't be executed!");
}
repository.deleteByTenant(tenant);
}
private static <T> boolean isOperationAllowed(
final AccessController.Operation operation, T entity,
final AccessController<T> accessController) {
try {
accessController.assertOperationAllowed(operation, entity);
return true;
} catch (final InsufficientPermissionException e) {
return false;
}
}
@SuppressWarnings({"rawtypes", "unchecked"})
private static <T extends Long> Set<Long> toSetDistinct(final Iterable<T> i) {
final Set<Long> set = new HashSet<>();
i.forEach(set::add);
return set;
}
}