ONOS-423 - Throw a specific exception when resources are exhausted

Create an exception to throw when no resources are available
Simple, Hazelcast and Distributed link resource stores throw ResourceAllocationException
Unit tests for successful and unsuccessful bandwidth and lambda allocations

Change-Id: If062d10d2233935dd59efabfa5f37a446e275a5b
diff --git a/utils/misc/src/main/java/org/onlab/util/PositionalParameterStringFormatter.java b/utils/misc/src/main/java/org/onlab/util/PositionalParameterStringFormatter.java
new file mode 100644
index 0000000..89b2b75
--- /dev/null
+++ b/utils/misc/src/main/java/org/onlab/util/PositionalParameterStringFormatter.java
@@ -0,0 +1,48 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * 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.onlab.util;
+
+/**
+ * Allows slf4j style formatting of parameters into a string.
+ */
+public final class PositionalParameterStringFormatter {
+
+    /**
+     * Hide default constructor.
+     */
+    private PositionalParameterStringFormatter() {
+    }
+
+    /**
+     * Formats a string using slf4j style positional parameter replacement.
+     * Instances of "{}" in the source string are replaced in order by the
+     * specified parameter values as strings.
+     *
+     * @param source original string to format
+     * @param parameters list of parameters that will be substituted
+     * @return formatted string
+     */
+    public static String format(String source, Object... parameters) {
+        String current = source;
+        for (Object parameter : parameters) {
+            if (!current.contains("{}")) {
+                return current;
+            }
+            current = current.replaceFirst("\\{\\}", parameter.toString());
+        }
+        return current;
+    }
+}