28835396755

Committed 07 Jul 2026 01:38AM UTC coverage: 89.623% (-0.7%) from 90.336%

Build # 28835396755

Build Type

push

github

Committed by

Hyshmily

Commit Message

fix and feat : fix known bugs and accept lz4 to wrap value for smaller memory,"wrap key" needs to consider

Signed-off-by: Hyshmily <cxm8607@outlook.com>

Coverage Stats

1325 of 1552 branches covered (85.37%)

Branch coverage included in aggregate %.

167 of 236 new or added lines in 12 files covered. (70.76%)

3745 of 4105 relevant lines covered (91.23%)

4.19 hits per line

Source File
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0.0

/common/src/main/java/io/github/hyshmily/hotkey/cache/codec/DefaultWeigher.java

/*
 * Copyright 2026 Hyshmily. 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 io.github.hyshmily.hotkey.cache.codec;

import com.github.benmanes.caffeine.cache.Weigher;
import io.github.hyshmily.hotkey.model.CacheEntry;
import org.jspecify.annotations.NonNull;

/**
 * Rough heap-weight estimator for {@link CacheEntry} values.
 *
 * <p>Used when {@code hotkey.local.cache.max-weight} is set. {@code String} values
 * are weighted by their UTF‑8 byte length (estimated without allocation).
 * Raw {@code byte[]} values are weighted by their length. All other types get
 * a flat {@code 1024} byte estimate. The {@link CacheEntry} wrapper overhead
 * (~200 bytes) is added on top.
 */
@SuppressWarnings("all")
public final class DefaultWeigher implements Weigher<String, Object> {

  public static final DefaultWeigher INSTANCE = new DefaultWeigher();
  private static final int ENTRY_OVERHEAD = 200;

  private DefaultWeigher() {}

  @Override
  public int weigh(String key, @NonNull Object value) {
    int valueWeight = valueOf(value);
    return (key.length() << 1) + valueWeight + ENTRY_OVERHEAD;
  }

  private static int valueOf(Object v) {
    if (v instanceof String s) return utf8Length(s);
    if (v instanceof byte[] b) return b.length;
    if (v instanceof CacheEntry ce) return valueOf(ce.getValue());
    return 1024;
  }

  /**
   * Estimates the number of bytes a {@link String} would occupy when
   * encoded in UTF‑8, without actually allocating a byte array.
   */
  private static int utf8Length(String s) {
    if (isAscii(s)) {
      return s.length();
    }
    int length = 0;
    final int len = s.length();
    for (int i = 0; i < len; i++) {
      char c = s.charAt(i);
      if (c < 0x80) {
        length++;
      } else if (c < 0x800) {
        length += 2;
      } else if (Character.isSurrogate(c)) {
        length += 4;
        i++;
      } else {
        length += 3;
      }
    }
    return length;
  }

  private static boolean isAscii(String s) {
    for (int i = 0; i < s.length(); i++) {
      if (s.charAt(i) > 0x7F) {
        return false;
      }
    }
    return true;
  }
}

1	/*
2	* Copyright 2026 Hyshmily. All Rights Reserved.
3	*
4	* Licensed under the Apache License, Version 2.0 (the "License");
5	* you may not use this file except in compliance with the License.
6	* You may obtain a copy of the License at
7	*
8	* http://www.apache.org/licenses/LICENSE-2.0
9	*
10	* Unless required by applicable law or agreed to in writing, software
11	* distributed under the License is distributed on an "AS IS" BASIS,
12	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13	* See the License for the specific language governing permissions and
14	* limitations under the License.
15	*/
16	package io.github.hyshmily.hotkey.cache.codec;
17
18	import com.github.benmanes.caffeine.cache.Weigher;
19	import io.github.hyshmily.hotkey.model.CacheEntry;
20	import org.jspecify.annotations.NonNull;
21
22	/**
23	* Rough heap-weight estimator for {@link CacheEntry} values.
24	*
25	* <p>Used when {@code hotkey.local.cache.max-weight} is set. {@code String} values
26	* are weighted by their UTF‑8 byte length (estimated without allocation).
27	* Raw {@code byte[]} values are weighted by their length. All other types get
28	* a flat {@code 1024} byte estimate. The {@link CacheEntry} wrapper overhead
29	* (~200 bytes) is added on top.
30	*/
31	@SuppressWarnings("all")
32	public final class DefaultWeigher implements Weigher<String, Object> {
33
NEW 34	public static final DefaultWeigher INSTANCE = new DefaultWeigher();	×
35	private static final int ENTRY_OVERHEAD = 200;
36
37	private DefaultWeigher() {}
38
39	@Override
40	public int weigh(String key, @NonNull Object value) {
NEW 41	int valueWeight = valueOf(value);	×
NEW 42	return (key.length() << 1) + valueWeight + ENTRY_OVERHEAD;	×
43	}
44
45	private static int valueOf(Object v) {
NEW 46	if (v instanceof String s) return utf8Length(s);	×
NEW 47	if (v instanceof byte[] b) return b.length;	×
NEW 48	if (v instanceof CacheEntry ce) return valueOf(ce.getValue());	×
NEW 49	return 1024;	×
50	}
51
52	/**
53	* Estimates the number of bytes a {@link String} would occupy when
54	* encoded in UTF‑8, without actually allocating a byte array.
55	*/
56	private static int utf8Length(String s) {
NEW 57	if (isAscii(s)) {	×
NEW 58	return s.length();	×
59	}
NEW 60	int length = 0;	×
NEW 61	final int len = s.length();	×
NEW 62	for (int i = 0; i < len; i++) {	×
NEW 63	char c = s.charAt(i);	×
NEW 64	if (c < 0x80) {	×
NEW 65	length++;	×
NEW 66	} else if (c < 0x800) {	×
NEW 67	length += 2;	×
NEW 68	} else if (Character.isSurrogate(c)) {	×
NEW 69	length += 4;	×
NEW 70	i++;	×
71	} else {
NEW 72	length += 3;	×
73	}
74	}
NEW 75	return length;	×
76	}
77
78	private static boolean isAscii(String s) {
NEW 79	for (int i = 0; i < s.length(); i++) {	×
NEW 80	if (s.charAt(i) > 0x7F) {	×
NEW 81	return false;	×
82	}
83	}
NEW 84	return true;	×
85	}
86	}

Hyshmily / hotkey / 28835396755

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