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149 lines (112 loc) · 5.06 KB
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package com.pubnub.api.managers;
import com.pubnub.api.builder.dto.StateOperation;
import com.pubnub.api.builder.dto.SubscribeOperation;
import com.pubnub.api.builder.dto.UnsubscribeOperation;
import com.pubnub.api.models.SubscriptionItem;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
public class StateManager {
/**
* Contains a list of subscribed channels
*/
private Map<String, SubscriptionItem> channels;
/**
* Contains a list of subscribed presence channels.
*/
private Map<String, SubscriptionItem> presenceChannels;
/**
* Contains a list of subscribed channel groups.
*/
private Map<String, SubscriptionItem> groups;
/**
* Contains a list of subscribed presence channel groups.
*/
private Map<String, SubscriptionItem> presenceGroups;
public StateManager() {
this.channels = new HashMap<>();
this.presenceChannels = new HashMap<>();
this.groups = new HashMap<>();
this.presenceGroups = new HashMap<>();
}
public final synchronized void adaptSubscribeBuilder(final SubscribeOperation subscribeOperation) {
for (String channel : subscribeOperation.getChannels()) {
SubscriptionItem subscriptionItem = new SubscriptionItem().setName(channel);
channels.put(channel, subscriptionItem);
if (subscribeOperation.isPresenceEnabled()) {
SubscriptionItem presenceSubscriptionItem = new SubscriptionItem().setName(channel);
presenceChannels.put(channel, presenceSubscriptionItem);
}
}
for (String channelGroup : subscribeOperation.getChannelGroups()) {
SubscriptionItem subscriptionItem = new SubscriptionItem().setName(channelGroup);
groups.put(channelGroup, subscriptionItem);
if (subscribeOperation.isPresenceEnabled()) {
SubscriptionItem presenceSubscriptionItem = new SubscriptionItem().setName(channelGroup);
presenceGroups.put(channelGroup, presenceSubscriptionItem);
}
}
}
public final synchronized void adaptStateBuilder(final StateOperation stateOperation) {
for (String channel: stateOperation.getChannels()) {
SubscriptionItem subscribedChannel = channels.get(channel);
if (subscribedChannel != null) {
subscribedChannel.setState(stateOperation.getState());
}
}
for (String channelGroup: stateOperation.getChannelGroups()) {
SubscriptionItem subscribedChannelGroup = groups.get(channelGroup);
if (subscribedChannelGroup != null) {
subscribedChannelGroup.setState(stateOperation.getState());
}
}
}
public final synchronized void adaptUnsubscribeBuilder(final UnsubscribeOperation unsubscribeOperation) {
for (String channel: unsubscribeOperation.getChannels()) {
this.channels.remove(channel);
this.presenceChannels.remove(channel);
}
for (String channelGroup: unsubscribeOperation.getChannelGroups()) {
this.groups.remove(channelGroup);
this.presenceGroups.remove(channelGroup);
}
}
public final synchronized Map<String, Object> createStatePayload() {
Map<String, Object> stateResponse = new HashMap<>();
for (SubscriptionItem channel: channels.values()) {
if (channel.getState() != null) {
stateResponse.put(channel.getName(), channel.getState());
}
}
for (SubscriptionItem channelGroup: groups.values()) {
if (channelGroup.getState() != null) {
stateResponse.put(channelGroup.getName(), channelGroup.getState());
}
}
return stateResponse;
}
public synchronized List<String> prepareChannelList(final boolean includePresence) {
return prepareMembershipList(channels, presenceChannels, includePresence);
}
public synchronized List<String> prepareChannelGroupList(final boolean includePresence) {
return prepareMembershipList(groups, presenceGroups, includePresence);
}
public synchronized boolean isEmpty() {
return (channels.isEmpty() && presenceChannels.isEmpty() && groups.isEmpty() && presenceGroups.isEmpty());
}
private synchronized List<String> prepareMembershipList(final Map<String, SubscriptionItem> dataStorage,
final Map<String, SubscriptionItem> presenceStorage,
final boolean includePresence) {
List<String> response = new ArrayList<>();
for (SubscriptionItem channelGroupItem: dataStorage.values()) {
response.add(channelGroupItem.getName());
}
if (includePresence) {
for (SubscriptionItem presenceChannelGroupItem: presenceStorage.values()) {
response.add(presenceChannelGroupItem.getName().concat("-pnpres"));
}
}
return response;
}
}