1 files changed, 106 insertions, 0 deletions
diff --git a/runtime-acm/src/main/java/org/onap/policy/clamp/acm/runtime/supervision/HandleCounter.java b/runtime-acm/src/main/java/org/onap/policy/clamp/acm/runtime/supervision/HandleCounter.java
new file mode 100644
index 000000000..9949f3c89
--- /dev/null
+++ b/runtime-acm/src/main/java/org/onap/policy/clamp/acm/runtime/supervision/HandleCounter.java
@@ -0,0 +1,106 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2021 Nordix Foundation.
+ * ================================================================================
+ * 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.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.clamp.acm.runtime.supervision;
+
+import java.time.Instant;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Set;
+import lombok.Getter;
+import lombok.Setter;
+
+public class HandleCounter<K> {
+    @Getter
+    @Setter
+    private long maxWaitMs;
+
+    @Getter
+    @Setter
+    private int maxRetryCount;
+
+    private Map<K, Integer> mapCounter = new HashMap<>();
+    private Set<K> mapFault = new HashSet<>();
+    private Map<K, Long> mapTimer = new HashMap<>();
+
+    public long getDuration(K id) {
+        mapTimer.putIfAbsent(id, getEpochMilli());
+        return getEpochMilli() - mapTimer.get(id);
+    }
+
+    /**
+     * Reset timer and clear counter and fault by id.
+     *
+     * @param id the id
+     */
+    public void clear(K id) {
+        mapFault.remove(id);
+        mapCounter.put(id, 0);
+        mapTimer.put(id, getEpochMilli());
+    }
+
+    /**
+     * Remove counter, timer and fault by id.
+     *
+     * @param id the id
+     */
+    public void remove(K id) {
+        mapFault.remove(id);
+        mapCounter.remove(id);
+        mapTimer.remove(id);
+    }
+
+    public void setFault(K id) {
+        mapCounter.put(id, 0);
+        mapFault.add(id);
+    }
+
+    /**
+     * Increment RetryCount by id e return true if minor or equal of maxRetryCount.
+     *
+     * @param id the identifier
+     * @return false if count is major of maxRetryCount
+     */
+    public boolean count(K id) {
+        int counter = mapCounter.getOrDefault(id, 0) + 1;
+        if (counter <= maxRetryCount) {
+            mapCounter.put(id, counter);
+            return true;
+        }
+        return false;
+    }
+
+    public boolean isFault(K id) {
+        return mapFault.contains(id);
+    }
+
+    public int getCounter(K id) {
+        return mapCounter.getOrDefault(id, 0);
+    }
+
+    protected long getEpochMilli() {
+        return Instant.now().toEpochMilli();
+    }
+
+    public Set<K> keySet() {
+        return mapCounter.keySet();
+    }
+}