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add license information for Caffeine code used in FrequencySketch (#446)

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* add license information for Caffeine code used in FrequencySketch

* fix grammar issue
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PJ Fanning 2023-06-23 09:36:08 +01:00 • committed by GitHub
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commit 2f8ef56626
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6
LICENSE
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@ -311,6 +311,12 @@ For more information, please refer to <http://unlicense.org/>
--------------- ---------------
pekko-actor contains code in `org.apache.pekko.util.FrequencySketch.scala` which was based on code from
Caffeine <https://github.com/ben-manes/caffeine> which was developed under the Apache 2.0 license.
Copyright 2015 Ben Manes. All Rights Reserved.
---------------
pekko-cluster contains VectorClock.scala which is derived from code written pekko-cluster contains VectorClock.scala which is derived from code written
by Coda Hale <https://github.com/codahale/vlock>. by Coda Hale <https://github.com/codahale/vlock>.
He has agreed to allow us to use this code under an Apache 2.0 license He has agreed to allow us to use this code under an Apache 2.0 license

18
actor/src/main/scala/org/apache/pekko/util/FrequencySketch.scala
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@ -11,6 +11,22 @@
* Copyright (C) 2021-2022 Lightbend Inc. <https://www.lightbend.com> * Copyright (C) 2021-2022 Lightbend Inc. <https://www.lightbend.com>
*/ */
/*
* Copyright 2015 Ben Manes. All Rights Reserved.
*
* 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.
*/
package org.apache.pekko.util package org.apache.pekko.util
import org.apache.pekko.annotation.InternalApi import org.apache.pekko.annotation.InternalApi
@ -253,7 +269,7 @@ private[pekko] object FastFrequencySketch {
* so that constants can be used for improved efficiency. It also uses its own rehashing of item hash codes. * so that constants can be used for improved efficiency. It also uses its own rehashing of item hash codes.
* *
* The implementation is inspired by the approach used in the Caffeine caching library: * The implementation is inspired by the approach used in the Caffeine caching library:
* https://github.com/ben-manes/caffeine * https://github.com/ben-manes/caffeine/blob/a6be555f0f2a44d33a9d7e52ea923622e373ac7f/caffeine/src/main/java/com/github/benmanes/caffeine/cache/FrequencySketch.java
* *
* @param width width of the count-min sketch (number of counters) * @param width width of the count-min sketch (number of counters)
* @param resetSize the size (number of counter increments) to apply the reset operation * @param resetSize the size (number of counter increments) to apply the reset operation

6
legal/pekko-actor-jar-license.txt
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@ -308,3 +308,9 @@ ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
OTHER DEALINGS IN THE SOFTWARE. OTHER DEALINGS IN THE SOFTWARE.
For more information, please refer to <http://unlicense.org/> For more information, please refer to <http://unlicense.org/>
---------------
pekko-actor contains code in `org.apache.pekko.util.FrequencySketch.scala` which was based on code from
Caffeine <https://github.com/ben-manes/caffeine> which was developed under the Apache 2.0 license.
Copyright 2015 Ben Manes. All Rights Reserved.