com.google.gerrit.server.change.NotifyUtil.java Source code

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Here is the source code for com.google.gerrit.server.change.NotifyUtil.java

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// Copyright (C) 2016 The Android Open Source Project
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package com.google.gerrit.server.change;

import static java.util.stream.Collectors.joining;

import com.google.common.collect.ImmutableListMultimap;
import com.google.common.collect.ListMultimap;
import com.google.common.collect.MultimapBuilder;
import com.google.gerrit.common.Nullable;
import com.google.gerrit.extensions.api.changes.NotifyHandling;
import com.google.gerrit.extensions.api.changes.NotifyInfo;
import com.google.gerrit.extensions.api.changes.RecipientType;
import com.google.gerrit.extensions.restapi.BadRequestException;
import com.google.gerrit.reviewdb.client.Account;
import com.google.gerrit.reviewdb.server.ReviewDb;
import com.google.gerrit.server.account.AccountResolver;
import com.google.gwtorm.server.OrmException;
import com.google.inject.Inject;
import com.google.inject.Provider;
import com.google.inject.Singleton;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;

@Singleton
public class NotifyUtil {
    private final Provider<ReviewDb> dbProvider;
    private final AccountResolver accountResolver;

    @Inject
    NotifyUtil(Provider<ReviewDb> dbProvider, AccountResolver accountResolver) {
        this.dbProvider = dbProvider;
        this.accountResolver = accountResolver;
    }

    public static boolean shouldNotify(NotifyHandling notify,
            @Nullable Map<RecipientType, NotifyInfo> notifyDetails) {
        if (!isNullOrEmpty(notifyDetails)) {
            return true;
        }

        return notify.compareTo(NotifyHandling.NONE) > 0;
    }

    private static boolean isNullOrEmpty(@Nullable Map<RecipientType, NotifyInfo> notifyDetails) {
        if (notifyDetails == null || notifyDetails.isEmpty()) {
            return true;
        }

        for (NotifyInfo notifyInfo : notifyDetails.values()) {
            if (!isEmpty(notifyInfo)) {
                return false;
            }
        }

        return true;
    }

    private static boolean isEmpty(NotifyInfo notifyInfo) {
        return notifyInfo.accounts == null || notifyInfo.accounts.isEmpty();
    }

    public ListMultimap<RecipientType, Account.Id> resolveAccounts(
            @Nullable Map<RecipientType, NotifyInfo> notifyDetails) throws OrmException, BadRequestException {
        if (isNullOrEmpty(notifyDetails)) {
            return ImmutableListMultimap.of();
        }

        ListMultimap<RecipientType, Account.Id> m = null;
        for (Entry<RecipientType, NotifyInfo> e : notifyDetails.entrySet()) {
            List<String> accounts = e.getValue().accounts;
            if (accounts != null) {
                if (m == null) {
                    m = MultimapBuilder.hashKeys().arrayListValues().build();
                }
                m.putAll(e.getKey(), find(dbProvider.get(), accounts));
            }
        }

        return m != null ? m : ImmutableListMultimap.of();
    }

    private List<Account.Id> find(ReviewDb db, List<String> nameOrEmails) throws OrmException, BadRequestException {
        List<String> missing = new ArrayList<>(nameOrEmails.size());
        List<Account.Id> r = new ArrayList<>(nameOrEmails.size());
        for (String nameOrEmail : nameOrEmails) {
            Account a = accountResolver.find(db, nameOrEmail);
            if (a != null) {
                r.add(a.getId());
            } else {
                missing.add(nameOrEmail);
            }
        }

        if (!missing.isEmpty()) {
            throw new BadRequestException("The following accounts that should be notified could not be resolved: "
                    + missing.stream().distinct().sorted().collect(joining(", ")));
        }

        return r;
    }
}