Github user grkvlt commented on a diff in the pull request:
https://github.com/apache/brooklyn-server/pull/53#discussion_r57325507
--- Diff:
locations/jclouds/src/main/java/org/apache/brooklyn/location/jclouds/softlayer/SoftLayerSameVlanLocationCustomizer.java
---
@@ -0,0 +1,398 @@
+/*
+ * 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.Map;
+import java.util.concurrent.CountDownLatch;
+import java.util.concurrent.TimeUnit;
+
+import javax.annotation.concurrent.ThreadSafe;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import com.google.common.collect.ImmutableMap;
+import com.google.common.reflect.TypeToken;
+import com.google.common.util.concurrent.Uninterruptibles;
+
+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.api.sensor.AttributeSensor;
+import org.apache.brooklyn.config.ConfigKey;
+import org.apache.brooklyn.core.config.ConfigKeys;
+import org.apache.brooklyn.core.location.LocationConfigKeys;
+import org.apache.brooklyn.core.sensor.Sensors;
+import org.apache.brooklyn.location.jclouds.BasicJcloudsLocationCustomizer;
+import org.apache.brooklyn.location.jclouds.JcloudsLocation;
+import org.apache.brooklyn.location.jclouds.JcloudsLocationCustomizer;
+import org.apache.brooklyn.location.jclouds.JcloudsMachineLocation;
+import org.apache.brooklyn.location.jclouds.JcloudsSshMachineLocation;
+import org.apache.brooklyn.util.collections.MutableMap;
+import org.apache.brooklyn.util.core.flags.SetFromFlag;
+import org.apache.brooklyn.util.core.task.Tasks;
+import org.apache.brooklyn.util.text.Strings;
+import org.apache.brooklyn.util.time.Duration;
+
+/**
+ * Customizes {@link JcloudsSshMachineLocation machines} in SoftLayer to
use
+ * the same VLANs across an application, or other named scope
+ * <p>
+ * Define the scope by setting the {@link #SCOPE_UID scopeUid} ({@code
softlayer.vlan.scopeUid})
+ * option. If unset or blank, will default to the {@link
Entity#getApplicationId() application ID}
+ * of the entity being deployed on the machine. Set {@link #SCOPE_TIMEOUT
scopeTimeout}
+ * ({@code softlayer.vlan.timeout}) to change the length of time the
customizer
+ * will wait for VLAN information; normally ten minutes.
+ * <p>
+ * The VLAN IDs and latches are stored as {@link ConfigKey configuration}
on
+ * the {@link JcloudsLocation location} provisioning the VMs, in a map
keyed
+ * on the scope.
+ */
+@ThreadSafe
+public class SoftLayerSameVlanLocationCustomizer extends
BasicJcloudsLocationCustomizer {
+
+ private static final Logger LOG =
LoggerFactory.getLogger(SoftLayerSameVlanLocationCustomizer.class);
+
+ @SetFromFlag("scopeUid")
+ 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");
+
+ @SetFromFlag("scopeTimeout")
+ 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(15));
+
+ public static final ConfigKey<Map<String, CountDownLatch>>
COUNTDOWN_LATCH_MAP = ConfigKeys.newConfigKey(
+ new TypeToken<Map<String, CountDownLatch>>() { },
+ "softLayerSameVlanLocationCustomizer.map.latches",
+ "A mapping from scope identifiers to CountDownLatches; used to
synchronize threads",
+ MutableMap.<String, CountDownLatch>of());
--- End diff --
True. Defensive coding?
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