/*
* Copyright 2010-2013 Ning, Inc.
*
* Ning licenses this file to you 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 org.killbill.billing.usage.api.user;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.UUID;
import javax.annotation.Nullable;
import javax.inject.Inject;
import org.joda.time.LocalDate;
import org.killbill.billing.ErrorCode;
import org.killbill.billing.ObjectType;
import org.killbill.billing.callcontext.InternalCallContext;
import org.killbill.billing.callcontext.InternalTenantContext;
import org.killbill.billing.osgi.api.OSGIServiceRegistration;
import org.killbill.billing.usage.api.BaseUserApi;
import org.killbill.billing.usage.api.RawUsageRecord;
import org.killbill.billing.usage.api.RolledUpUnit;
import org.killbill.billing.usage.api.RolledUpUsage;
import org.killbill.billing.usage.api.SubscriptionUsageRecord;
import org.killbill.billing.usage.api.UnitUsageRecord;
import org.killbill.billing.usage.api.UsageApiException;
import org.killbill.billing.usage.api.UsageRecord;
import org.killbill.billing.usage.api.UsageUserApi;
import org.killbill.billing.usage.dao.RolledUpUsageDao;
import org.killbill.billing.usage.dao.RolledUpUsageModelDao;
import org.killbill.billing.usage.plugin.api.UsagePluginApi;
import org.killbill.billing.util.callcontext.CallContext;
import org.killbill.billing.util.callcontext.InternalCallContextFactory;
import org.killbill.billing.util.callcontext.TenantContext;
import com.google.common.base.Strings;
public class DefaultUsageUserApi extends BaseUserApi implements UsageUserApi {
private final RolledUpUsageDao rolledUpUsageDao;
private final InternalCallContextFactory internalCallContextFactory;
@Inject
public DefaultUsageUserApi(final RolledUpUsageDao rolledUpUsageDao,
final InternalCallContextFactory internalCallContextFactory,
final OSGIServiceRegistration<UsagePluginApi> pluginRegistry) {
super(pluginRegistry);
this.rolledUpUsageDao = rolledUpUsageDao;
this.internalCallContextFactory = internalCallContextFactory;
}
@Override
public void recordRolledUpUsage(final SubscriptionUsageRecord record, final CallContext callContext) throws UsageApiException {
final InternalCallContext internalCallContext = internalCallContextFactory.createInternalCallContext(record.getSubscriptionId(), ObjectType.SUBSCRIPTION, callContext);
// check if we have (at least) one row with the supplied tracking id
if (!Strings.isNullOrEmpty(record.getTrackingId()) && recordsWithTrackingIdExist(record, internalCallContext)) {
throw new UsageApiException(ErrorCode.USAGE_RECORD_TRACKING_ID_ALREADY_EXISTS, record.getTrackingId());
}
final List<RolledUpUsageModelDao> usages = new ArrayList<RolledUpUsageModelDao>();
for (final UnitUsageRecord unitUsageRecord : record.getUnitUsageRecord()) {
for (final UsageRecord usageRecord : unitUsageRecord.getDailyAmount()) {
usages.add(new RolledUpUsageModelDao(record.getSubscriptionId(), unitUsageRecord.getUnitType(), usageRecord.getDate(), usageRecord.getAmount(), record.getTrackingId()));
}
}
rolledUpUsageDao.record(usages, internalCallContext);
}
@Override
public RolledUpUsage getUsageForSubscription(final UUID subscriptionId, final String unitType, final LocalDate startDate, final LocalDate endDate, final TenantContext tenantContext) {
final List<RawUsageRecord> rawUsage = getUsageFromPlugin(startDate, endDate, tenantContext);
if (rawUsage != null) {
final List<RolledUpUnit> rolledUpAmount = getRolledUpUnitsForRawPluginUsage(subscriptionId, unitType, rawUsage);
return new DefaultRolledUpUsage(subscriptionId, startDate, endDate, rolledUpAmount);
}
final List<RolledUpUsageModelDao> usageForSubscription = rolledUpUsageDao.getUsageForSubscription(subscriptionId, startDate, endDate, unitType, internalCallContextFactory.createInternalTenantContext(subscriptionId, ObjectType.SUBSCRIPTION, tenantContext));
final List<RolledUpUnit> rolledUpAmount = getRolledUpUnits(usageForSubscription);
return new DefaultRolledUpUsage(subscriptionId, startDate, endDate, rolledUpAmount);
}
@Override
public List<RolledUpUsage> getAllUsageForSubscription(final UUID subscriptionId, final List<LocalDate> transitionTimes, final TenantContext tenantContext) {
final InternalTenantContext internalCallContext = internalCallContextFactory.createInternalTenantContext(subscriptionId, ObjectType.SUBSCRIPTION, tenantContext);
List<RolledUpUsage> result = new ArrayList<RolledUpUsage>();
LocalDate prevDate = null;
for (LocalDate curDate : transitionTimes) {
if (prevDate != null) {
final List<RawUsageRecord> rawUsage = getUsageFromPlugin(prevDate, curDate, tenantContext);
if (rawUsage != null) {
final List<RolledUpUnit> rolledUpAmount = getRolledUpUnitsForRawPluginUsage(subscriptionId, null, rawUsage);
result.add(new DefaultRolledUpUsage(subscriptionId, prevDate, curDate, rolledUpAmount));
} else {
final List<RolledUpUsageModelDao> usageForSubscription = rolledUpUsageDao.getAllUsageForSubscription(subscriptionId, prevDate, curDate, internalCallContext);
final List<RolledUpUnit> rolledUpAmount = getRolledUpUnits(usageForSubscription);
result.add(new DefaultRolledUpUsage(subscriptionId, prevDate, curDate, rolledUpAmount));
}
}
prevDate = curDate;
}
return result;
}
private List<RolledUpUnit> getRolledUpUnitsForRawPluginUsage(final UUID subscriptionId, @Nullable final String unitType, final List<RawUsageRecord> rawAccountUsage) {
final Map<String, Long> tmp = new HashMap<String, Long>();
for (RawUsageRecord cur : rawAccountUsage) {
// Filter out wrong subscriptionId
if (cur.getSubscriptionId().compareTo(subscriptionId) != 0) {
continue;
}
// Filter out wrong unitType if specified.
if (unitType != null && !unitType.equals(cur.getUnitType())) {
continue;
}
Long currentAmount = tmp.get(cur.getUnitType());
Long updatedAmount = (currentAmount != null) ? currentAmount + cur.getAmount() : cur.getAmount();
tmp.put(cur.getUnitType(), updatedAmount);
}
final List<RolledUpUnit> result = new ArrayList<RolledUpUnit>(tmp.size());
for (final String curType : tmp.keySet()) {
result.add(new DefaultRolledUpUnit(curType, tmp.get(curType)));
}
return result;
}
private List<RolledUpUnit> getRolledUpUnits(final List<RolledUpUsageModelDao> usageForSubscription) {
final Map<String, Long> tmp = new HashMap<String, Long>();
for (RolledUpUsageModelDao cur : usageForSubscription) {
Long currentAmount = tmp.get(cur.getUnitType());
Long updatedAmount = (currentAmount != null) ? currentAmount + cur.getAmount() : cur.getAmount();
tmp.put(cur.getUnitType(), updatedAmount);
}
final List<RolledUpUnit> result = new ArrayList<RolledUpUnit>(tmp.size());
for (final String unitType : tmp.keySet()) {
result.add(new DefaultRolledUpUnit(unitType, tmp.get(unitType)));
}
return result;
}
private boolean recordsWithTrackingIdExist(SubscriptionUsageRecord record, InternalCallContext context) {
return rolledUpUsageDao.recordsWithTrackingIdExist(record.getSubscriptionId(), record.getTrackingId(), context);
}
}