/*
* Copyright 2010-2011 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 com.ning.billing.entitlement.api.user;
import javax.annotation.Nullable;
import java.util.ArrayList;
import java.util.Collections;
import java.util.LinkedList;
import java.util.List;
import java.util.UUID;
import org.joda.time.DateTime;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.ning.billing.catalog.api.ActionPolicy;
import com.ning.billing.catalog.api.BillingPeriod;
import com.ning.billing.catalog.api.Catalog;
import com.ning.billing.catalog.api.CatalogApiException;
import com.ning.billing.catalog.api.Plan;
import com.ning.billing.catalog.api.PlanPhase;
import com.ning.billing.catalog.api.PlanPhaseSpecifier;
import com.ning.billing.catalog.api.PriceList;
import com.ning.billing.catalog.api.ProductCategory;
import com.ning.billing.entitlement.api.SubscriptionApiService;
import com.ning.billing.entitlement.api.SubscriptionTransitionType;
import com.ning.billing.entitlement.api.user.DefaultSubscriptionFactory.SubscriptionBuilder;
import com.ning.billing.entitlement.api.user.SubscriptionTransitionDataIterator.Kind;
import com.ning.billing.entitlement.api.user.SubscriptionTransitionDataIterator.Order;
import com.ning.billing.entitlement.api.user.SubscriptionTransitionDataIterator.TimeLimit;
import com.ning.billing.entitlement.api.user.SubscriptionTransitionDataIterator.Visibility;
import com.ning.billing.entitlement.events.EntitlementEvent;
import com.ning.billing.entitlement.events.phase.PhaseEvent;
import com.ning.billing.entitlement.events.user.ApiEvent;
import com.ning.billing.entitlement.events.user.ApiEventType;
import com.ning.billing.entitlement.exceptions.EntitlementError;
import com.ning.billing.junction.api.BlockingState;
import com.ning.billing.util.callcontext.CallContext;
import com.ning.billing.util.clock.Clock;
import com.ning.billing.util.entity.EntityBase;
public class SubscriptionData extends EntityBase implements Subscription {
private static final Logger log = LoggerFactory.getLogger(SubscriptionData.class);
protected final Clock clock;
protected final SubscriptionApiService apiService;
//
// Final subscription fields
//
protected final UUID bundleId;
protected final DateTime startDate;
protected final DateTime bundleStartDate;
protected final ProductCategory category;
//
// Those can be modified through non User APIs, and a new Subscription
// object would be created
//
protected final long activeVersion;
protected final DateTime chargedThroughDate;
protected final DateTime paidThroughDate;
//
// User APIs (create, change, cancel,...) will recompute those each time,
// so the user holding that subscription object get the correct state when
// the call completes
//
protected LinkedList<SubscriptionTransitionData> transitions;
// Transient object never returned at the API
public SubscriptionData(final SubscriptionBuilder builder) {
this(builder, null, null);
}
public SubscriptionData(final SubscriptionBuilder builder,
@Nullable final SubscriptionApiService apiService, @Nullable final Clock clock) {
super(builder.getId());
this.apiService = apiService;
this.clock = clock;
this.bundleId = builder.getBundleId();
this.startDate = builder.getStartDate();
this.bundleStartDate = builder.getBundleStartDate();
this.category = builder.getCategory();
this.activeVersion = builder.getActiveVersion();
this.chargedThroughDate = builder.getChargedThroughDate();
this.paidThroughDate = builder.getPaidThroughDate();
}
@Override
public UUID getBundleId() {
return bundleId;
}
@Override
public DateTime getStartDate() {
return startDate;
}
@Override
public SubscriptionState getState() {
return (getPreviousTransition() == null) ? null
: getPreviousTransition().getNextState();
}
@Override
public PlanPhase getCurrentPhase() {
return (getPreviousTransitionData() == null) ? null
: getPreviousTransitionData().getNextPhase();
}
@Override
public Plan getCurrentPlan() {
return (getPreviousTransitionData() == null) ? null
: getPreviousTransitionData().getNextPlan();
}
@Override
public PriceList getCurrentPriceList() {
return (getPreviousTransitionData() == null) ? null :
getPreviousTransitionData().getNextPriceList();
}
@Override
public DateTime getEndDate() {
final SubscriptionEvent latestTransition = getPreviousTransition();
if (latestTransition.getNextState() == SubscriptionState.CANCELLED) {
return latestTransition.getEffectiveTransitionTime();
}
return null;
}
@Override
public boolean cancel(final DateTime requestedDate, final boolean eot,
final CallContext context) throws EntitlementUserApiException {
return apiService.cancel(this, requestedDate, eot, context);
}
@Override
public boolean uncancel(final CallContext context)
throws EntitlementUserApiException {
return apiService.uncancel(this, context);
}
@Override
public boolean changePlan(final String productName, final BillingPeriod term,
final String priceList, final DateTime requestedDate, final CallContext context)
throws EntitlementUserApiException {
return apiService.changePlan(this, productName, term, priceList,
requestedDate, context);
}
@Override
public boolean recreate(final PlanPhaseSpecifier spec, final DateTime requestedDate,
final CallContext context) throws EntitlementUserApiException {
return apiService.recreatePlan(this, spec, requestedDate, context);
}
@Override
public SubscriptionEvent getPendingTransition() {
final SubscriptionTransitionData data = getPendingTransitionData();
if (data == null) {
return null;
}
return new DefaultSubscriptionEvent(data, startDate);
}
@Override
public BlockingState getBlockingState() {
throw new UnsupportedOperationException();
}
protected SubscriptionTransitionData getPendingTransitionData() {
if (transitions == null) {
return null;
}
final SubscriptionTransitionDataIterator it = new SubscriptionTransitionDataIterator(
clock, transitions, Order.ASC_FROM_PAST, Kind.ENTITLEMENT,
Visibility.ALL, TimeLimit.FUTURE_ONLY);
return it.hasNext() ? it.next() : null;
}
@Override
public SubscriptionEvent getPreviousTransition() {
final SubscriptionTransitionData data = getPreviousTransitionData();
if (data == null) {
return null;
}
return new DefaultSubscriptionEvent(data, startDate);
}
protected SubscriptionTransitionData getPreviousTransitionData() {
if (transitions == null) {
return null;
}
final SubscriptionTransitionDataIterator it = new SubscriptionTransitionDataIterator(
clock, transitions, Order.DESC_FROM_FUTURE, Kind.ENTITLEMENT,
Visibility.FROM_DISK_ONLY, TimeLimit.PAST_OR_PRESENT_ONLY);
return it.hasNext() ? it.next() : null;
}
@Override
public ProductCategory getCategory() {
return category;
}
public DateTime getBundleStartDate() {
return bundleStartDate;
}
@Override
public DateTime getChargedThroughDate() {
return chargedThroughDate;
}
@Override
public DateTime getPaidThroughDate() {
return paidThroughDate;
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result
+ ((id == null) ? 0 : id.hashCode());
return result;
}
@Override
public boolean equals(final Object obj) {
if (this == obj) {
return true;
}
if (obj == null) {
return false;
}
if (getClass() != obj.getClass()) {
return false;
}
final SubscriptionData other = (SubscriptionData) obj;
if (id == null) {
if (other.id != null) {
return false;
}
} else if (!id.equals(other.id)) {
return false;
}
return true;
}
public List<SubscriptionEvent> getBillingTransitions() {
if (transitions == null) {
return Collections.emptyList();
}
final List<SubscriptionEvent> result = new ArrayList<SubscriptionEvent>();
final SubscriptionTransitionDataIterator it = new SubscriptionTransitionDataIterator(
clock, transitions, Order.ASC_FROM_PAST, Kind.BILLING,
Visibility.ALL, TimeLimit.ALL);
while (it.hasNext()) {
result.add(new DefaultSubscriptionEvent(it.next(), startDate));
}
return result;
}
public SubscriptionEvent getTransitionFromEvent(final EntitlementEvent event, final int seqId) {
if (transitions == null || event == null) {
return null;
}
for (final SubscriptionTransitionData cur : transitions) {
if (cur.getId().equals(event.getId())) {
final SubscriptionTransitionData withSeq = new SubscriptionTransitionData(cur, seqId);
return new DefaultSubscriptionEvent(withSeq, startDate);
}
}
return null;
}
public long getLastEventOrderedId() {
final SubscriptionTransitionDataIterator it = new SubscriptionTransitionDataIterator(
clock, transitions, Order.DESC_FROM_FUTURE, Kind.ENTITLEMENT,
Visibility.FROM_DISK_ONLY, TimeLimit.ALL);
return it.hasNext() ? it.next().getTotalOrdering() : -1L;
}
public long getActiveVersion() {
return activeVersion;
}
public List<SubscriptionTransitionData> getAllTransitions() {
return transitions;
}
public SubscriptionTransitionData getInitialTransitionForCurrentPlan() {
if (transitions == null) {
throw new EntitlementError(String.format(
"No transitions for subscription %s", getId()));
}
final SubscriptionTransitionDataIterator it = new SubscriptionTransitionDataIterator(
clock, transitions, Order.DESC_FROM_FUTURE, Kind.ENTITLEMENT,
Visibility.ALL, TimeLimit.PAST_OR_PRESENT_ONLY);
while (it.hasNext()) {
final SubscriptionTransitionData cur = it.next();
if (cur.getTransitionType() == SubscriptionTransitionType.CREATE
|| cur.getTransitionType() == SubscriptionTransitionType.RE_CREATE
|| cur.getTransitionType() == SubscriptionTransitionType.CHANGE
|| cur.getTransitionType() == SubscriptionTransitionType.MIGRATE_ENTITLEMENT) {
return cur;
}
}
throw new EntitlementError(String.format(
"Failed to find InitialTransitionForCurrentPlan id = %s",
getId().toString()));
}
public boolean isSubscriptionFutureCancelled() {
if (transitions == null) {
return false;
}
final SubscriptionTransitionDataIterator it = new SubscriptionTransitionDataIterator(
clock, transitions, Order.ASC_FROM_PAST, Kind.ENTITLEMENT,
Visibility.ALL, TimeLimit.FUTURE_ONLY);
while (it.hasNext()) {
final SubscriptionTransitionData cur = it.next();
if (cur.getTransitionType() == SubscriptionTransitionType.CANCEL) {
return true;
}
}
return false;
}
public DateTime getPlanChangeEffectiveDate(final ActionPolicy policy,
final DateTime requestedDate) {
if (policy == ActionPolicy.IMMEDIATE) {
return requestedDate;
}
if (policy != ActionPolicy.END_OF_TERM) {
throw new EntitlementError(String.format(
"Unexpected policy type %s", policy.toString()));
}
if (chargedThroughDate == null) {
return requestedDate;
} else {
return chargedThroughDate.isBefore(requestedDate) ? requestedDate
: chargedThroughDate;
}
}
public DateTime getCurrentPhaseStart() {
if (transitions == null) {
throw new EntitlementError(String.format(
"No transitions for subscription %s", getId()));
}
final SubscriptionTransitionDataIterator it = new SubscriptionTransitionDataIterator(
clock, transitions, Order.DESC_FROM_FUTURE, Kind.ENTITLEMENT,
Visibility.ALL, TimeLimit.PAST_OR_PRESENT_ONLY);
while (it.hasNext()) {
final SubscriptionTransitionData cur = it.next();
if (cur.getTransitionType() == SubscriptionTransitionType.PHASE
|| cur.getTransitionType() == SubscriptionTransitionType.CREATE
|| cur.getTransitionType() == SubscriptionTransitionType.RE_CREATE
|| cur.getTransitionType() == SubscriptionTransitionType.CHANGE
|| cur.getTransitionType() == SubscriptionTransitionType.MIGRATE_ENTITLEMENT) {
return cur.getEffectiveTransitionTime();
}
}
throw new EntitlementError(String.format(
"Failed to find CurrentPhaseStart id = %s", getId().toString()));
}
public void rebuildTransitions(final List<EntitlementEvent> inputEvents,
final Catalog catalog) {
if (inputEvents == null) {
return;
}
SubscriptionState nextState = null;
String nextPlanName = null;
String nextPhaseName = null;
String nextPriceListName = null;
UUID nextUserToken = null;
SubscriptionState previousState = null;
PriceList previousPriceList = null;
transitions = new LinkedList<SubscriptionTransitionData>();
Plan previousPlan = null;
PlanPhase previousPhase = null;
for (final EntitlementEvent cur : inputEvents) {
if (!cur.isActive() || cur.getActiveVersion() < activeVersion) {
continue;
}
ApiEventType apiEventType = null;
boolean isFromDisk = true;
switch (cur.getType()) {
case PHASE:
final PhaseEvent phaseEV = (PhaseEvent) cur;
nextPhaseName = phaseEV.getPhase();
break;
case API_USER:
final ApiEvent userEV = (ApiEvent) cur;
apiEventType = userEV.getEventType();
isFromDisk = userEV.isFromDisk();
nextUserToken = userEV.getUserToken();
switch (apiEventType) {
case MIGRATE_BILLING:
case MIGRATE_ENTITLEMENT:
case CREATE:
case RE_CREATE:
previousState = null;
previousPlan = null;
previousPhase = null;
previousPriceList = null;
nextState = SubscriptionState.ACTIVE;
nextPlanName = userEV.getEventPlan();
nextPhaseName = userEV.getEventPlanPhase();
nextPriceListName = userEV.getPriceList();
break;
case CHANGE:
nextPlanName = userEV.getEventPlan();
nextPhaseName = userEV.getEventPlanPhase();
nextPriceListName = userEV.getPriceList();
break;
case CANCEL:
nextState = SubscriptionState.CANCELLED;
nextPlanName = null;
nextPhaseName = null;
break;
case UNCANCEL:
break;
default:
throw new EntitlementError(String.format(
"Unexpected UserEvent type = %s", userEV
.getEventType().toString()));
}
break;
default:
throw new EntitlementError(String.format(
"Unexpected Event type = %s", cur.getType()));
}
Plan nextPlan = null;
PlanPhase nextPhase = null;
PriceList nextPriceList = null;
try {
nextPlan = (nextPlanName != null) ? catalog.findPlan(nextPlanName, cur.getRequestedDate(), getStartDate()) : null;
nextPhase = (nextPhaseName != null) ? catalog.findPhase(nextPhaseName, cur.getRequestedDate(), getStartDate()) : null;
nextPriceList = (nextPriceListName != null) ? catalog.findPriceList(nextPriceListName, cur.getRequestedDate()) : null;
} catch (CatalogApiException e) {
log.error(String.format(
"Failed to build transition for subscription %s", id),
e);
}
final SubscriptionTransitionData transition = new SubscriptionTransitionData(
cur.getId(), id, bundleId, cur.getType(), apiEventType,
cur.getRequestedDate(), cur.getEffectiveDate(),
previousState, previousPlan, previousPhase,
previousPriceList, nextState, nextPlan, nextPhase,
nextPriceList, cur.getTotalOrdering(), nextUserToken,
isFromDisk);
transitions.add(transition);
previousState = nextState;
previousPlan = nextPlan;
previousPhase = nextPhase;
previousPriceList = nextPriceList;
}
}
}