INT-3359: Add GemfireLockRegistry

JIRA: https://jira.spring.io/browse/INT-3359

spring-integration-gemfire/src/main/java/org/springframework/integration/gemfire/util/GemfireLockRegistry.java

@@ -0,0 +1,55 @@
+/*
+ * Copyright 2014 the original author or authors.
+ *
+ * Licensed 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.springframework.integration.gemfire.util;
+
+import java.util.concurrent.locks.Lock;
+
+import org.springframework.integration.support.locks.LockRegistry;
+import org.springframework.util.Assert;
+
+import com.gemstone.gemfire.cache.Cache;
+import com.gemstone.gemfire.cache.Region;
+import com.gemstone.gemfire.cache.Scope;
+
+/**
+ * Implementation of {@link LockRegistry} providing a distributed lock using Gemfire.
+ *
+ * @author Artem Bilan
+ * @since 4.0
+ */
+public class GemfireLockRegistry implements LockRegistry {
+
+	public static final String LOCK_REGISTRY_REGION = "LockRegistry";
+
+	private final Region<?, ?> region;
+
+	public GemfireLockRegistry(Cache cache) {
+		Assert.notNull(cache, "'cache' must not be null");
+		this.region = cache.createRegionFactory().setScope(Scope.GLOBAL).create(LOCK_REGISTRY_REGION);
+	}
+
+	public GemfireLockRegistry(Region<?, ?> region) {
+		Assert.notNull(region, "'region' must not be null");
+		this.region = region;
+	}
+
+	@Override
+	public Lock obtain(Object lockKey) {
+		return this.region.getDistributedLock(lockKey);
+	}
+
+}

spring-integration-gemfire/src/main/java/org/springframework/integration/gemfire/util/package-info.java

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+/**
+ * Provides utility classes.
+ */
+package org.springframework.integration.gemfire.util;