Split out sal-distributed-eos

[controller.git] / opendaylight / md-sal / sal-distributed-datastore / src / main / java / org / opendaylight / controller / cluster / datastore / entityownership / selectionstrategy / LeastLoadedCandidateSelectionStrategy.java

diff --git a/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/entityownership/selectionstrategy/LeastLoadedCandidateSelectionStrategy.java b/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/entityownership/selectionstrategy/LeastLoadedCandidateSelectionStrategy.java
deleted file mode 100644 (file)
index 5bd78ff..0000000
--- a/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/entityownership/selectionstrategy/LeastLoadedCandidateSelectionStrategy.java
+++ /dev/null
@@ -1,62 +0,0 @@
-/*
- * Copyright (c) 2015 Cisco Systems, Inc. and others.  All rights reserved.
- *
- * This program and the accompanying materials are made available under the
- * terms of the Eclipse Public License v1.0 which accompanies this distribution,
- * and is available at http://www.eclipse.org/legal/epl-v10.html
- */
-package org.opendaylight.controller.cluster.datastore.entityownership.selectionstrategy;
-
-import com.google.common.annotations.VisibleForTesting;
-import com.google.common.base.MoreObjects;
-import com.google.common.base.Preconditions;
-import com.google.common.base.Strings;
-import java.util.Collection;
-import java.util.HashMap;
-import java.util.Map;
-
-/**
- * The LeastLoadedCandidateSelectionStrategy assigns ownership for an entity to the candidate which owns the least
- * number of entities.
- */
-public class LeastLoadedCandidateSelectionStrategy extends AbstractEntityOwnerSelectionStrategy {
-    private final Map<String, Long> localStatistics = new HashMap<>();
-
-    protected LeastLoadedCandidateSelectionStrategy(long selectionDelayInMillis, Map<String, Long> initialStatistics) {
-        super(selectionDelayInMillis, initialStatistics);
-
-        localStatistics.putAll(initialStatistics);
-    }
-
-    @Override
-    public String newOwner(String currentOwner, Collection<String> viableCandidates) {
-        Preconditions.checkArgument(viableCandidates.size() > 0);
-        String leastLoadedCandidate = null;
-        long leastLoadedCount = Long.MAX_VALUE;
-
-        if (!Strings.isNullOrEmpty(currentOwner)) {
-            long localVal = MoreObjects.firstNonNull(localStatistics.get(currentOwner), 0L);
-            localStatistics.put(currentOwner, localVal - 1);
-        }
-
-        for (String candidateName : viableCandidates) {
-            long val = MoreObjects.firstNonNull(localStatistics.get(candidateName), 0L);
-            if (val < leastLoadedCount) {
-                leastLoadedCount = val;
-                leastLoadedCandidate = candidateName;
-            }
-        }
-
-        if (leastLoadedCandidate == null) {
-            leastLoadedCandidate = viableCandidates.iterator().next();
-        }
-
-        localStatistics.put(leastLoadedCandidate, leastLoadedCount + 1);
-        return leastLoadedCandidate;
-    }
-
-    @VisibleForTesting
-    Map<String, Long> getLocalStatistics() {
-        return localStatistics;
-    }
-}