org.apache.james.mailbox.jpa.quota.JPAPerUserMaxQuotaManager Maven / Gradle / Ivy

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package org.apache.james.mailbox.jpa.quota;

import java.util.Map;
import java.util.Optional;
import java.util.function.Function;
import java.util.stream.Stream;

import javax.inject.Inject;
import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;

import org.apache.commons.lang3.tuple.Pair;
import org.apache.james.backends.jpa.EntityManagerUtils;
import org.apache.james.core.Domain;
import org.apache.james.core.quota.QuotaCountLimit;
import org.apache.james.core.quota.QuotaSizeLimit;
import org.apache.james.mailbox.model.Quota;
import org.apache.james.mailbox.model.QuotaRoot;
import org.apache.james.mailbox.quota.MaxQuotaManager;
import org.reactivestreams.Publisher;

import com.github.fge.lambdas.Throwing;
import com.google.common.collect.ImmutableMap;

import reactor.core.publisher.Mono;
import reactor.core.scheduler.Schedulers;

public class JPAPerUserMaxQuotaManager implements MaxQuotaManager {
    private final EntityManagerFactory entityManagerFactory;
    private final JPAPerUserMaxQuotaDAO dao;

    @Inject
    public JPAPerUserMaxQuotaManager(EntityManagerFactory entityManagerFactory, JPAPerUserMaxQuotaDAO dao) {
        this.entityManagerFactory = entityManagerFactory;
        this.dao = dao;
    }

    @Override
    public void setMaxStorage(QuotaRoot quotaRoot, QuotaSizeLimit maxStorageQuota) {
        dao.setMaxStorage(quotaRoot, Optional.of(maxStorageQuota));
    }

    @Override
    public Publisher setMaxStorageReactive(QuotaRoot quotaRoot, QuotaSizeLimit maxStorageQuota) {
        return Mono.fromRunnable(() -> setMaxStorage(quotaRoot, maxStorageQuota));
    }

    @Override
    public void setMaxMessage(QuotaRoot quotaRoot, QuotaCountLimit maxMessageCount) {
        dao.setMaxMessage(quotaRoot, Optional.of(maxMessageCount));
    }

    @Override
    public Publisher setMaxMessageReactive(QuotaRoot quotaRoot, QuotaCountLimit maxMessageCount) {
        return Mono.fromRunnable(() -> setMaxMessage(quotaRoot, maxMessageCount));
    }

    @Override
    public void setDomainMaxMessage(Domain domain, QuotaCountLimit count) {
        dao.setDomainMaxMessage(domain, Optional.of(count));
    }

    @Override
    public Publisher setDomainMaxMessageReactive(Domain domain, QuotaCountLimit count) {
        return Mono.fromRunnable(() -> setDomainMaxMessage(domain, count));
    }

    @Override
    public void setDomainMaxStorage(Domain domain, QuotaSizeLimit size) {
        dao.setDomainMaxStorage(domain, Optional.of(size));
    }

    @Override
    public Publisher setDomainMaxStorageReactive(Domain domain, QuotaSizeLimit size) {
        return Mono.fromRunnable(() -> setDomainMaxStorage(domain, size));
    }

    @Override
    public void removeDomainMaxMessage(Domain domain) {
        dao.setDomainMaxMessage(domain, Optional.empty());
    }

    @Override
    public Publisher removeDomainMaxMessageReactive(Domain domain) {
        return Mono.fromRunnable(() -> removeDomainMaxMessage(domain));
    }

    @Override
    public void removeDomainMaxStorage(Domain domain) {
        dao.setDomainMaxStorage(domain, Optional.empty());
    }

    @Override
    public Publisher removeDomainMaxStorageReactive(Domain domain) {
        return Mono.fromRunnable(() -> removeDomainMaxStorage(domain));
    }

    @Override
    public Optional getDomainMaxMessage(Domain domain) {
        EntityManager entityManager = entityManagerFactory.createEntityManager();
        try {
            return dao.getDomainMaxMessage(entityManager, domain);
        } finally {
            EntityManagerUtils.safelyClose(entityManager);
        }
    }

    @Override
    public Publisher getDomainMaxMessageReactive(Domain domain) {
        return Mono.fromSupplier(() -> getDomainMaxMessage(domain))
            .flatMap(Mono::justOrEmpty);
    }

    @Override
    public Optional getDomainMaxStorage(Domain domain) {
        EntityManager entityManager = entityManagerFactory.createEntityManager();
        try {
            return dao.getDomainMaxStorage(entityManager, domain);
        } finally {
            EntityManagerUtils.safelyClose(entityManager);
        }
    }

    @Override
    public Publisher getDomainMaxStorageReactive(Domain domain) {
        return Mono.fromSupplier(() -> getDomainMaxStorage(domain))
            .flatMap(Mono::justOrEmpty);
    }

    @Override
    public void removeMaxMessage(QuotaRoot quotaRoot) {
        dao.setMaxMessage(quotaRoot, Optional.empty());
    }

    @Override
    public Publisher removeMaxMessageReactive(QuotaRoot quotaRoot) {
        return Mono.fromRunnable(() -> removeMaxMessage(quotaRoot));
    }

    @Override
    public void setGlobalMaxStorage(QuotaSizeLimit globalMaxStorage) {
        dao.setGlobalMaxStorage(Optional.of(globalMaxStorage));
    }

    @Override
    public Publisher setGlobalMaxStorageReactive(QuotaSizeLimit globalMaxStorage) {
        return Mono.fromRunnable(() -> setGlobalMaxStorage(globalMaxStorage));
    }

    @Override
    public void removeGlobalMaxMessage() {
        dao.setGlobalMaxMessage(Optional.empty());
    }

    @Override
    public Publisher removeGlobalMaxMessageReactive() {
        return Mono.fromRunnable(this::removeGlobalMaxMessage);
    }

    @Override
    public void setGlobalMaxMessage(QuotaCountLimit globalMaxMessageCount) {
        dao.setGlobalMaxMessage(Optional.of(globalMaxMessageCount));
    }

    @Override
    public Publisher setGlobalMaxMessageReactive(QuotaCountLimit globalMaxMessageCount) {
        return Mono.fromRunnable(() -> setGlobalMaxMessage(globalMaxMessageCount));
    }

    @Override
    public Optional getGlobalMaxStorage() {
        EntityManager entityManager = entityManagerFactory.createEntityManager();
        try {
            return dao.getGlobalMaxStorage(entityManager);
        } finally {
            EntityManagerUtils.safelyClose(entityManager);
        }
    }

    @Override
    public Publisher getGlobalMaxStorageReactive() {
        return Mono.fromSupplier(this::getGlobalMaxStorage)
            .flatMap(Mono::justOrEmpty);
    }

    @Override
    public Optional getGlobalMaxMessage() {
        EntityManager entityManager = entityManagerFactory.createEntityManager();
        try {
            return dao.getGlobalMaxMessage(entityManager);
        } finally {
            EntityManagerUtils.safelyClose(entityManager);
        }
    }

    @Override
    public Publisher getGlobalMaxMessageReactive() {
        return Mono.fromSupplier(this::getGlobalMaxMessage)
            .flatMap(Mono::justOrEmpty);
    }

    @Override
    public Publisher quotaDetailsReactive(QuotaRoot quotaRoot) {
        EntityManager entityManager = entityManagerFactory.createEntityManager();
        return Mono.zip(
                Mono.fromCallable(() -> listMaxMessagesDetails(quotaRoot, entityManager)),
                Mono.fromCallable(() -> listMaxStorageDetails(quotaRoot, entityManager)))
            .map(tuple -> new QuotaDetails(tuple.getT1(), tuple.getT2()))
            .subscribeOn(Schedulers.boundedElastic())
            .doFinally(any -> EntityManagerUtils.safelyClose(entityManager));
    }

    @Override
    public Map listMaxMessagesDetails(QuotaRoot quotaRoot) {
        EntityManager entityManager = entityManagerFactory.createEntityManager();
        try {
            return listMaxMessagesDetails(quotaRoot, entityManager);
        } finally {
            EntityManagerUtils.safelyClose(entityManager);
        }
    }

    private ImmutableMap listMaxMessagesDetails(QuotaRoot quotaRoot, EntityManager entityManager) {
        Function> domainQuotaFunction = Throwing.function(domain -> dao.getDomainMaxMessage(entityManager, domain));
        return Stream.of(
                Pair.of(Quota.Scope.User, dao.getMaxMessage(entityManager, quotaRoot)),
                Pair.of(Quota.Scope.Domain, quotaRoot.getDomain().flatMap(domainQuotaFunction)),
                Pair.of(Quota.Scope.Global, dao.getGlobalMaxMessage(entityManager)))
            .filter(pair -> pair.getValue().isPresent())
            .collect(ImmutableMap.toImmutableMap(Pair::getKey, value -> value.getValue().get()));
    }

    @Override
    public Map listMaxStorageDetails(QuotaRoot quotaRoot) {
        EntityManager entityManager = entityManagerFactory.createEntityManager();
        try {
            return listMaxStorageDetails(quotaRoot, entityManager);
        } finally {
            EntityManagerUtils.safelyClose(entityManager);
        }
    }

    private ImmutableMap listMaxStorageDetails(QuotaRoot quotaRoot, EntityManager entityManager) {
        Function> domainQuotaFunction = Throwing.function(domain -> dao.getDomainMaxStorage(entityManager, domain));
        return Stream.of(
                Pair.of(Quota.Scope.User, dao.getMaxStorage(entityManager, quotaRoot)),
                Pair.of(Quota.Scope.Domain, quotaRoot.getDomain().flatMap(domainQuotaFunction)),
                Pair.of(Quota.Scope.Global, dao.getGlobalMaxStorage(entityManager)))
            .filter(pair -> pair.getValue().isPresent())
            .collect(ImmutableMap.toImmutableMap(Pair::getKey, value -> value.getValue().get()));
    }

    @Override
    public void removeMaxStorage(QuotaRoot quotaRoot) {
        dao.setMaxStorage(quotaRoot, Optional.empty());
    }

    @Override
    public Publisher removeMaxStorageReactive(QuotaRoot quotaRoot) {
        return Mono.fromRunnable(() -> removeMaxStorage(quotaRoot));
    }

    @Override
    public void removeGlobalMaxStorage() {
        dao.setGlobalMaxStorage(Optional.empty());
    }

    @Override
    public Publisher removeGlobalMaxStorageReactive() {
        return Mono.fromRunnable(this::removeGlobalMaxStorage);
    }

}