Moved cluster-based regex to separate file.

Signed-off-by: AWSHurneyt <[email protected]>

src/main/kotlin/org/opensearch/commons/alerting/model/ClusterMetricsInput.kt

@@ -4,6 +4,7 @@ import org.apache.commons.validator.routines.UrlValidator
 import org.apache.hc.core5.net.URIBuilder
 import org.opensearch.common.CheckedFunction
 import org.opensearch.commons.alerting.util.CommonUtilsException
+import org.opensearch.commons.alerting.util.ValidationHelpers.Companion.CLUSTER_NAME_REGEX
 import org.opensearch.core.ParseField
 import org.opensearch.core.common.io.stream.StreamInput
 import org.opensearch.core.common.io.stream.StreamOutput
@@ -16,14 +17,6 @@ import java.io.IOException
 import java.net.URI
 import java.net.URISyntaxException
 
-/**
- * This regex asserts that the string:
- *  Starts with a lowercase letter, or digit
- *  Contains a sequence of characters followed by an optional colon and another sequence of characters
- *  The sequences of characters can include lowercase letters, uppercase letters, digits, underscores, or hyphens
- *  The total length of the string can range from 1 to 255 characters
- */
-val CLUSTER_NAME_REGEX = Regex("^(?=.{1,255}$)[a-z0-9]([a-zA-Z0-9_-]*:?[a-zA-Z0-9_-]*)$")
 val ILLEGAL_PATH_PARAMETER_CHARACTERS = arrayOf(':', '"', '+', '\\', '|', '?', '#', '>', '<', ' ')
 
 /**

src/main/kotlin/org/opensearch/commons/alerting/util/IndexUtils.kt

@@ -29,15 +29,6 @@ class IndexUtils {
          */
         val INDEX_PATTERN_REGEX = Regex("""^(?=.{1,255}$)\.?[a-z0-9_\-\*\.]+$""")
 
-        /**
-         * This regex asserts that the string:
-         *  Starts with a lowercase letter, digit, or asterisk
-         *  Contains a sequence of characters followed by an optional colon and another sequence of characters
-         *  The sequences of characters can include lowercase letters, uppercase letters, digits, underscores, asterisks, or hyphens
-         *  The total length of the string can range from 1 to 255 characters
-         */
-        val CLUSTER_PATTERN_REGEX = Regex("^(?=.{1,255}$)[a-z0-9*]([a-zA-Z0-9_*-]*:?[a-zA-Z0-9_*-]*)$")
-
         const val NO_SCHEMA_VERSION = 0
 
         const val MONITOR_MAX_INPUTS = 1

src/main/kotlin/org/opensearch/commons/alerting/util/ValidationHelpers.kt

@@ -0,0 +1,28 @@
+/*
+ * Copyright OpenSearch Contributors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+package org.opensearch.commons.alerting.util
+
+class ValidationHelpers {
+    companion object {
+        /**
+         * This regex asserts that the string:
+         *  Starts with a lowercase letter, or digit
+         *  Contains a sequence of characters followed by an optional colon and another sequence of characters
+         *  The sequences of characters can include lowercase letters, uppercase letters, digits, underscores, or hyphens
+         *  The total length of the string can range from 1 to 255 characters
+         */
+        val CLUSTER_NAME_REGEX = Regex("^(?=.{1,255}$)[a-z0-9]([a-zA-Z0-9_-]*:?[a-zA-Z0-9_-]*)$")
+
+        /**
+         * This regex asserts that the string:
+         *  Starts with a lowercase letter, digit, or asterisk
+         *  Contains a sequence of characters followed by an optional colon and another sequence of characters
+         *  The sequences of characters can include lowercase letters, uppercase letters, digits, underscores, asterisks, or hyphens
+         *  The total length of the string can range from 1 to 255 characters
+         */
+        val CLUSTER_PATTERN_REGEX = Regex("^(?=.{1,255}$)[a-z0-9]([a-zA-Z0-9_-]*:?[a-zA-Z0-9_-]*)$")
+    }
+}