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Code Issues Releases Wiki Activity

Make DigestType.fromWireValue() more performant (#1555)

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* Make DigestType.fromWireValue() more performant
This commit is contained in:
Ben McIlwain
2022-03-15 13:00:54 -04:00
committed by GitHub
parent 86aa420773
commit 767e3935af
1 changed files with 7 additions and 6 deletions
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13
core/src/main/java/google/registry/tools/DigestType.java
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@@ -14,6 +14,9 @@
package google.registry.tools;
import com.google.common.collect.ImmutableMap;
import com.google.common.collect.Maps;
import java.util.Arrays;
import java.util.Optional;
/**
@@ -43,14 +46,12 @@ public enum DigestType {
this.bytes = bytes;
}
private static final ImmutableMap<Integer, DigestType> WIRE_VALUE_TO_DIGEST_TYPE =
Maps.uniqueIndex(Arrays.stream(DigestType.values()).iterator(), DigestType::getWireValue);
/** Fetches a DigestType enumeration constant by its IANA assigned value. */
public static Optional<DigestType> fromWireValue(int wireValue) {
for (DigestType alg : DigestType.values()) {
if (alg.getWireValue() == wireValue) {
return Optional.of(alg);
}
}
return Optional.empty();
return Optional.ofNullable(WIRE_VALUE_TO_DIGEST_TYPE.get(wireValue));
}
/** Fetches a value in the range [0, 255] that encodes this DS digest type on the wire. */