public void clearOldest()

in src/main/java/org/apache/commons/pool3/impl/GenericKeyedObjectPool.java [639:672]

20 lines of code
5 McCabe index (conditional complexity)


    public void clearOldest() {

        // build sorted map of idle objects
        final TreeMap<PooledObject<T>, K> map = new TreeMap<>();

        // Each item into the map using the PooledObject object as the
        // key. It then gets sorted based on the idle time
        poolMap.forEach((key, value) -> value.getIdleObjects().forEach(p -> map.put(p, key)));

        // Now iterate created map and kill the first 15% plus one to account
        // for zero
        int itemsToRemove = (int) (map.size() * 0.15) + 1;
        final Iterator<Entry<PooledObject<T>, K>> iter = map.entrySet().iterator();

        while (iter.hasNext() && itemsToRemove > 0) {
            final Entry<PooledObject<T>, K> entry = iter.next();
            // kind of backwards on naming. In the map, each key is the
            // PooledObject because it has the ordering with the timestamp
            // value. Each value that the key references is the key of the
            // list it belongs to.
            final K key = entry.getValue();
            final PooledObject<T> p = entry.getKey();
            // Assume the destruction succeeds
            boolean destroyed = true;
            try {
                destroyed = destroy(key, p, false, DestroyMode.NORMAL);
            } catch (final Exception e) {
                swallowException(e);
            }
            if (destroyed) {
                itemsToRemove--;
            }
        }
    }