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Allow PresenceType filtering on presence websocket via presenceType query param

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catbref 2020-12-21 12:25:58 +00:00
parent 7cbdbbcc8d
commit 688f215dfd
1 changed files with 31 additions and 2 deletions
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33
src/main/java/org/qortal/api/websocket/PresenceWebSocket.java
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@ -79,6 +79,9 @@ public class PresenceWebSocket extends ApiWebSocket implements Listener {
/** Outer map key is PresenceType (enum), inner map key is public key in base58, inner map value is timestamp */
private static final Map<PresenceType, Map<String, Long>> currentEntries = Collections.synchronizedMap(new EnumMap<>(PresenceType.class));
/** (Optional) PresenceType used for filtering by that Session. */
private static final Map<Session, PresenceType> sessionPresenceTypes = Collections.synchronizedMap(new HashMap<>());
@Override
public void configure(WebSocketServletFactory factory) {
factory.register(PresenceWebSocket.class);
@ -118,17 +121,40 @@ public class PresenceWebSocket extends ApiWebSocket implements Listener {
List<PresenceInfo> presenceInfo = Collections.singletonList(new PresenceInfo(presenceType, pubKey58, computedTimestamp));
// Notify sessions
for (Session session : getSessions())
sendPresenceInfo(session, presenceInfo);
for (Session session : getSessions()) {
PresenceType sessionPresenceType = sessionPresenceTypes.get(session);
if (sessionPresenceType == null || sessionPresenceType == presenceType)
sendPresenceInfo(session, presenceInfo);
}
}
@OnWebSocketConnect
@Override
public void onWebSocketConnect(Session session) {
Map<String, List<String>> queryParams = session.getUpgradeRequest().getParameterMap();
List<String> presenceTypes = queryParams.get("presenceType");
// We only support ONE presenceType
String presenceTypeName = presenceTypes == null || presenceTypes.isEmpty() ? null : presenceTypes.get(0);
PresenceType presenceType = presenceTypeName == null ? null : PresenceType.fromString(presenceTypeName);
// Make sure that if caller does give a presenceType, that it is a valid/known one.
if (presenceTypeName != null && presenceType == null) {
session.close(4003, "unknown presenceType: " + presenceTypeName);
return;
}
// Save session's requested PresenceType, if given
if (presenceType != null)
sessionPresenceTypes.put(session, presenceType);
List<PresenceInfo> presenceInfo;
synchronized (currentEntries) {
presenceInfo = currentEntries.entrySet().stream()
.filter(entry -> presenceType == null ? true : entry.getKey() == presenceType)
.flatMap(entry -> entry.getValue().entrySet().stream().map(innerEntry -> new PresenceInfo(entry.getKey(), innerEntry.getKey(), innerEntry.getValue())))
.collect(Collectors.toList());
}
@ -144,6 +170,9 @@ public class PresenceWebSocket extends ApiWebSocket implements Listener {
@OnWebSocketClose
@Override
public void onWebSocketClose(Session session, int statusCode, String reason) {
// clean up
sessionPresenceTypes.remove(session);
super.onWebSocketClose(session, statusCode, reason);
}