[client] Add user cache

1 files changed, 71 insertions, 0 deletions

diff --git a/dozentenmodul/src/main/java/org/openslx/dozmod/thrift/UserCache.java b/dozentenmodul/src/main/java/org/openslx/dozmod/thrift/UserCache.java
new file mode 100644
index 00000000..50c02f08
--- /dev/null
+++ b/dozentenmodul/src/main/java/org/openslx/dozmod/thrift/UserCache.java
@@ -0,0 +1,71 @@
+package org.openslx.dozmod.thrift;
+
+import java.util.List;
+
+import org.apache.log4j.Logger;
+import org.openslx.bwlp.thrift.iface.UserInfo;
+import org.openslx.thrifthelper.ThriftManager;
+import org.openslx.util.GenericDataCache;
+
+public class UserCache {
+
+	private static final Logger LOGGER = Logger.getLogger(UserCache.class);
+
+	/**
+	 * How long should the list be cached?
+	 */
+	private static final int CACHE_TIME_MS = 5 * 60 * 1000;
+
+	private static final GenericDataCache<List<UserInfo>> cache = new GenericDataCache<List<UserInfo>>(
+			CACHE_TIME_MS) {
+
+		@Override
+		protected List<UserInfo> update() throws Exception {
+			List<UserInfo> result = null;
+			int pageSize = ThriftManager.getSatClient().getPageSize();
+			for (int i = 0;; ++i) {
+				List<UserInfo> page = ThriftManager.getSatClient()
+						.getUserList(Session.getSatelliteToken(), i);
+				if (result == null) {
+					result = page;
+				} else {
+					result.addAll(page);
+				}
+				if (page.size() < pageSize)
+					break;
+			}
+			return result;
+		}
+	};
+
+	private UserCache() {
+		// No instancing
+	}
+
+	/**
+	 * Get all known users
+	 * 
+	 * @return list of users
+	 */
+	public static List<UserInfo> getAll() {
+		return cache.get();
+	}
+
+	/**
+	 * Find the user with the given id
+	 * 
+	 * @param user id
+	 * @return matching user, or <code>null</code> if not found
+	 */
+	public static UserInfo find(String userId) {
+		List<UserInfo> list = cache.get();
+		if (list == null)
+			return null;
+		for (UserInfo user : list) {
+			if (user.userId.equals(userId))
+				return user;
+		}
+		return null;
+	}
+
+}