mailbox/tools/indexer/src/main/java/org/apache/mailbox/tools/indexer/UserReindexingTask.java

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package org.apache.mailbox.tools.indexer;

import java.time.Clock;
import java.time.Instant;
import java.util.Optional;

import javax.inject.Inject;

import org.apache.james.core.User;
import org.apache.james.mailbox.exception.MailboxException;
import org.apache.james.mailbox.indexer.ReIndexingExecutionFailures;
import org.apache.james.task.Task;
import org.apache.james.task.TaskExecutionDetails;
import org.apache.james.task.TaskType;

public class UserReindexingTask implements Task {

    public static final TaskType USER_RE_INDEXING = TaskType.of("userReIndexing");

    public static class AdditionalInformation extends ReprocessingContextInformation {
        private final User user;

        AdditionalInformation(User user, int successfullyReprocessedMailCount, int failedReprocessedMailCount, ReIndexingExecutionFailures failures, Instant timestamp) {
            super(successfullyReprocessedMailCount, failedReprocessedMailCount, failures, timestamp);
            this.user = user;
        }

        public String getUser() {
            return user.asString();
        }

    }

    private final ReIndexerPerformer reIndexerPerformer;
    private final User user;
    private final ReprocessingContext reprocessingContext;

    @Inject
    public UserReindexingTask(ReIndexerPerformer reIndexerPerformer, User user) {
        this.reIndexerPerformer = reIndexerPerformer;
        this.user = user;
        this.reprocessingContext = new ReprocessingContext();
    }

    public static class Factory {

        private final ReIndexerPerformer reIndexerPerformer;

        @Inject
        public Factory(ReIndexerPerformer reIndexerPerformer) {
            this.reIndexerPerformer = reIndexerPerformer;
        }

        public UserReindexingTask create(UserReindexingTaskDTO dto) {
            User user = User.fromUsername(dto.getUsername());
            return new UserReindexingTask(reIndexerPerformer, user);
        }
    }

    @Override
    public Result run() {
        try {
            return reIndexerPerformer.reIndex(user, reprocessingContext);
        } catch (MailboxException e) {
            return Result.PARTIAL;
        }
    }

    public User getUser() {
        return user;
    }

    @Override
    public TaskType type() {
        return USER_RE_INDEXING;
    }

    @Override
    public Optional<TaskExecutionDetails.AdditionalInformation> details() {
        return Optional.of(new UserReindexingTask.AdditionalInformation(user,
            reprocessingContext.successfullyReprocessedMailCount(),
            reprocessingContext.failedReprocessingMailCount(),
            reprocessingContext.failures(),
            Clock.systemUTC().instant())
        );
    }
}