Github user ahgittin commented on a diff in the pull request:
https://github.com/apache/brooklyn-server/pull/53#discussion_r55703662
--- Diff:
locations/jclouds/src/main/java/org/apache/brooklyn/location/jclouds/softlayer/SoftLayerSameVlanLocationCustomizer.java
---
@@ -0,0 +1,192 @@
+/*
+ * 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 org.apache.brooklyn.location.jclouds.softlayer;
+
+import java.util.concurrent.Semaphore;
+import java.util.concurrent.TimeUnit;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import com.google.common.cache.Cache;
+import com.google.common.cache.CacheBuilder;
+
+import org.jclouds.compute.ComputeService;
+import org.jclouds.compute.options.TemplateOptions;
+import org.jclouds.softlayer.SoftLayerApi;
+import org.jclouds.softlayer.compute.options.SoftLayerTemplateOptions;
+import org.jclouds.softlayer.domain.VirtualGuest;
+import org.jclouds.softlayer.features.VirtualGuestApi;
+import org.jclouds.softlayer.reference.SoftLayerConstants;
+
+import org.apache.brooklyn.api.entity.Entity;
+import org.apache.brooklyn.config.ConfigKey;
+import org.apache.brooklyn.core.config.ConfigKeys;
+import org.apache.brooklyn.core.location.LocationConfigKeys;
+import org.apache.brooklyn.location.jclouds.BasicJcloudsLocationCustomizer;
+import org.apache.brooklyn.location.jclouds.JcloudsLocation;
+import org.apache.brooklyn.location.jclouds.JcloudsMachineLocation;
+import org.apache.brooklyn.util.core.task.Tasks;
+import org.apache.brooklyn.util.javalang.Threads;
+import org.apache.brooklyn.util.text.Strings;
+import org.apache.brooklyn.util.time.Duration;
+
+/**
+ * Configures SoftLayer provisioned VMs with the same VLAN ids across an
application.
+ */
+public class SoftLayerSameVlanLocationCustomizer extends
BasicJcloudsLocationCustomizer {
+
+ private static final Logger LOG =
LoggerFactory.getLogger(SoftLayerSameVlanLocationCustomizer.class);
+
+ public static final ConfigKey<String> SCOPE_UID =
ConfigKeys.newStringConfigKey("softlayer.vlan.scopeUid",
+ "The unique identifier for a Softlayer location scope that
will have VMs created in the same VLAN");
+
+ public static final ConfigKey<Duration> SCOPE_TIMEOUT =
ConfigKeys.newDurationConfigKey("softlayer.vlan.timeout",
+ "The length of time to wait for a Softlayer VLAN ID",
Duration.minutes(10));
+
+ /** Caches the semaphore object for locking access to the scope. */
+ private static final Cache<String, Semaphore> semaphoreCache =
CacheBuilder.newBuilder().build();
+
+ /** Caches the public VLAN id that should be shared between all
entities in the same scope. */
+ private static final Cache<String, Integer> publicVlanIdCache =
CacheBuilder.newBuilder().build();
+
+ /** Caches the private VLAN id that should be shared between all
entities in the same scope. */
+ private static final Cache<String, Integer> privateVlanIdCache =
CacheBuilder.newBuilder().build();
+
+ /**
+ * Used to obtain the VLANs being used by the first created {@link
JcloudsMachineLocation}.
+ */
+ @Override
+ public void customize(JcloudsLocation location, ComputeService
computeService, JcloudsMachineLocation machine) {
+ String provider = location.getProvider();
+ if
(!(provider.equals(SoftLayerConstants.SOFTLAYER_PROVIDER_NAME))) {
+ String message = String.format("Invalid location provider:
%s", provider);
+ LOG.warn(message);
+ throw new IllegalArgumentException(message);
+ }
+
+ Semaphore semaphore = null;
+ String scopeUid = getScopeUid(location);
+
+ synchronized (SoftLayerSameVlanLocationCustomizer.class) {
+ semaphore = semaphoreCache.getIfPresent(scopeUid);
+ if (semaphore == null) {
--- End diff --
couldn't this be `null` if we're rebinding? should probably share
semaphore acquisition method with the `customize(..., TemplateOptions)`. (also
would it make sense to put that method first?)
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