Github user sjcorbett commented on a diff in the pull request:
https://github.com/apache/incubator-brooklyn/pull/353#discussion_r21028105
--- Diff:
core/src/main/java/brooklyn/location/access/PortForwardManagerImpl.java ---
@@ -0,0 +1,408 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF 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 brooklyn.location.access;
+
+import static com.google.common.base.Preconditions.checkNotNull;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Iterator;
+import java.util.LinkedHashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.atomic.AtomicInteger;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import brooklyn.config.ConfigKey;
+import brooklyn.entity.basic.ConfigKeys;
+import brooklyn.entity.rebind.BasicLocationRebindSupport;
+import brooklyn.entity.rebind.RebindContext;
+import brooklyn.entity.rebind.RebindSupport;
+import brooklyn.location.Location;
+import brooklyn.location.basic.AbstractLocation;
+import brooklyn.mementos.LocationMemento;
+import brooklyn.util.collections.MutableMap;
+
+import com.google.common.annotations.Beta;
+import com.google.common.base.Objects.ToStringHelper;
+import com.google.common.collect.ImmutableList;
+import com.google.common.collect.ImmutableMap;
+import com.google.common.collect.Lists;
+import com.google.common.net.HostAndPort;
+
+@SuppressWarnings("serial")
+public class PortForwardManagerImpl extends AbstractLocation implements
PortForwardManager {
+
+ // TODO This implementation is not efficient, and currently has a cap
of about 50000 rules.
+ // Need to improve the efficiency and scale.
+ // A quick win could be to use a different portReserved counter for
each publicIpId,
+ // when calling acquirePublicPort?
+
+ // TODO Callers need to be more careful in acquirePublicPort for which
ports are actually in use.
+ // If multiple apps sharing the same public-ip (e.g. in the same
vcloud-director vOrg) then they
+ // must not allocate the same public port (so can share the same
PortForwardManagerAuthority
+ // via PortForwardManager.Factory.sharedInstance).
+ // However, this still doesn't check if the port is *actually*
available. For example, if a
+ // different Brooklyn instance is also deploying there then we can get
port conflicts, or if
+ // some ports in that range are already in use (e.g. due to earlier
dev/test runs) then this
+ // will not be respected. Callers should probably figure out the port
number themselves, but
+ // that also leads to concurrency issues.
+
+ // TODO The publicIpId means different things to different callers:
+ // - In acquirePublicPort() it is (often?) an identifier of the
actual public ip.
+ // - In later calls to associate(), it is (often?) an identifier for
the target machine
+ // such as the jcloudsMachine.getJcloudsId().
+
+ // TODO Should PortForwardManager be changed to extend
AbstractLocation, or is this wrapper ok?
+
+ private static final Logger log =
LoggerFactory.getLogger(PortForwardManagerImpl.class);
+
+ public static final ConfigKey<String> SCOPE =
ConfigKeys.newStringConfigKey(
--- End diff --
Well, `PORT_FORWARD_MANAGER_STARTING_PORT` is
`PORT_FORWARD_MANAGER_STARTING_POINT` on the interface but is otherwise the
same.
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