1 files changed, 128 insertions, 0 deletions
diff --git a/appc-oam/appc-oam-bundle/src/main/java/org/openecomp/appc/oam/util/BundleFilter.java b/appc-oam/appc-oam-bundle/src/main/java/org/openecomp/appc/oam/util/BundleFilter.java
new file mode 100644
index 000000000..1e9f9b6a1
--- /dev/null
+++ b/appc-oam/appc-oam-bundle/src/main/java/org/openecomp/appc/oam/util/BundleFilter.java
@@ -0,0 +1,128 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP : APPC
+ * ================================================================================
+ * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
+ * ================================================================================
+ * Copyright (C) 2017 Amdocs
+ * =============================================================================
+ * 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.
+ * 
+ * ECOMP is a trademark and service mark of AT&T Intellectual Property.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.openecomp.appc.oam.util;
+
+import org.osgi.framework.Bundle;
+
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.regex.Pattern;
+
+
+
+/**
+ *
+ * Utility Class that splits a given bundleSet into two sets: bundleToStopSet and
+ * bundleToNotStopSet
+ *
+ * The bundleToStopSet is defined as: all bundles which match at least one of
+ * the stopRegexes but exceptRegexes none of the
+ *
+ * The bundleToNotStopSet is defined as all bundles which are not a member of
+ * the bundleToStopSet
+ *
+ */
+class BundleFilter {
+
+    private final Map<String, Bundle> bundleToStopSet;
+    private final Map<String, Bundle> bundleToNotStopSet;
+
+
+    /**
+     * BundleFilter a bundle filter
+     * @param stopRegexes  - An array of regular expression used to pick out which bundles are candidates for stopping
+     * @param exceptRegexes - An array of regular expression used to override which bundles are candidates for stopping
+     * @param bundles - An array of the bundle to be split into {@link #getBundlesToStop()} {@link #getBundlesToNotStop()}
+     */
+    BundleFilter(String[] stopRegexes, String[] exceptRegexes, Bundle[] bundles) {
+
+        Pattern[] stopPatterns = toPattern(stopRegexes);
+        Pattern[] exceptPatterns = toPattern(exceptRegexes);
+
+        Map<String, Bundle> bundleToStop = new HashMap<>();
+        Map<String, Bundle>  bundleToNotStop = new HashMap<>();
+
+        for (Bundle bundle : bundles) {
+            String symbolicName = bundle.getSymbolicName();
+            if (isMatch(symbolicName,stopPatterns) && !isMatch(symbolicName,exceptPatterns)) {
+                bundleToStop.put(symbolicName, bundle);
+            } else {
+                bundleToNotStop.put(symbolicName, bundle);
+            }
+        }
+
+        this.bundleToStopSet = Collections.unmodifiableMap(bundleToStop);
+        this.bundleToNotStopSet = Collections.unmodifiableMap(bundleToNotStop);
+    }
+
+    /**
+     * Determines if the value matches any of the regular expressions.
+     *
+     * @param value
+     *            - the value that is to be matched
+     * @param patterns
+     *            - the array of {@link Pattern} to match the value against
+     * @return boolean true if there is a match
+     */
+    private boolean isMatch(String value,Pattern[] patterns) {
+        for (Pattern pattern : patterns) {
+            if (pattern.matcher(value).matches()) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    /**
+     * This method converts an Array of regular expression in String form into a
+     * Array of {@link Pattern}
+     *
+     * @param regex
+     *            - A string array of regular expressions
+     * @return Pattern Array of compiled regular expressions
+     */
+    private Pattern[] toPattern(String[] regex) {
+        Pattern[] pattern = new Pattern[regex.length];
+        for (int i = 0; i < regex.length; i++ ) {
+            pattern[i] = Pattern.compile(regex[i]);
+        }
+        return pattern;
+    }
+
+
+    /**@return Map of bundles that are to be stopped  */
+    Map<String, Bundle> getBundlesToStop(){
+        return bundleToStopSet;
+    }
+
+    /**
+     *
+     * @return Map of bundles that are not to be stopped
+     */
+    Map<String, Bundle> getBundlesToNotStop() {
+        return bundleToNotStopSet;
+    }
+}