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[env manager] more efficient zulu cache and add filters to list command
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96 changes: 96 additions & 0 deletions
96
env-manager/src/main/java/io/yupiik/dev/shared/http/Cache.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,96 @@ | ||
| package io.yupiik.dev.shared.http; | ||
|
|
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| import io.yupiik.fusion.framework.api.scope.ApplicationScoped; | ||
| import io.yupiik.fusion.framework.build.api.json.JsonModel; | ||
| import io.yupiik.fusion.json.JsonMapper; | ||
|
|
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| import java.io.IOException; | ||
| import java.net.http.HttpRequest; | ||
| import java.net.http.HttpResponse; | ||
| import java.nio.file.Files; | ||
| import java.nio.file.Path; | ||
| import java.time.Clock; | ||
| import java.util.Base64; | ||
| import java.util.Map; | ||
|
|
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| import static java.nio.charset.StandardCharsets.UTF_8; | ||
| import static java.time.Clock.systemDefaultZone; | ||
| import static java.util.stream.Collectors.toMap; | ||
|
|
||
| @ApplicationScoped | ||
| public class Cache { | ||
| private final Path cache; | ||
| private final long cacheValidity; | ||
| private final JsonMapper jsonMapper; | ||
| private final Clock clock; | ||
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|
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| protected Cache() { | ||
| this.cache = null; | ||
| this.jsonMapper = null; | ||
| this.clock = null; | ||
| this.cacheValidity = 0L; | ||
| } | ||
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| public Cache(final HttpConfiguration configuration, final JsonMapper jsonMapper) { | ||
| this.jsonMapper = jsonMapper; | ||
| try { | ||
| this.cache = configuration.isCacheEnabled() ? null : Files.createDirectories(Path.of(configuration.cache())); | ||
| } catch (final IOException e) { | ||
| throw new IllegalArgumentException("Can't create HTTP cache directory : '" + configuration.cache() + "', adjust --http-cache parameter"); | ||
| } | ||
| this.cacheValidity = configuration.cacheValidity(); | ||
| this.clock = systemDefaultZone(); | ||
| } | ||
|
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| public void save(final Path key, final HttpResponse<String> result) { | ||
| save( | ||
| key, | ||
| result.headers().map().entrySet().stream() | ||
| .filter(it -> !"content-encoding".equalsIgnoreCase(it.getKey())) | ||
| .collect(toMap(Map.Entry::getKey, l -> String.join(",", l.getValue()))), | ||
| result.body()); | ||
| } | ||
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| public void save(final Path cacheLocation, final Map<String, String> headers, final String body) { | ||
| final var cachedData = jsonMapper.toString(new Response(headers, body, clock.instant().plusMillis(cacheValidity).toEpochMilli())); | ||
| try { | ||
| Files.writeString(cacheLocation, cachedData); | ||
| } catch (final IOException e) { | ||
| try { | ||
| Files.deleteIfExists(cacheLocation); | ||
| } catch (final IOException ex) { | ||
| // no-op | ||
| } | ||
| } | ||
| } | ||
|
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| public CachedEntry lookup(final HttpRequest request) { | ||
| return lookup(request.uri().toASCIIString()); | ||
| } | ||
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| public CachedEntry lookup(final String key) { | ||
| if (cache == null) { | ||
| return null; | ||
| } | ||
|
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| final var cacheLocation = cache.resolve(Base64.getUrlEncoder().withoutPadding().encodeToString(key.getBytes(UTF_8))); | ||
| if (Files.exists(cacheLocation)) { | ||
| try { | ||
| final var cached = jsonMapper.fromString(Response.class, Files.readString(cacheLocation)); | ||
| if (cached.validUntil() > clock.instant().toEpochMilli()) { | ||
| return new CachedEntry(cacheLocation, cached); | ||
| } | ||
| } catch (final IOException e) { | ||
| throw new IllegalStateException(e); | ||
| } | ||
| } | ||
| return new CachedEntry(cacheLocation, null); | ||
| } | ||
|
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| public record CachedEntry(Path key, Response hit) { | ||
| } | ||
|
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| @JsonModel | ||
| public record Response(Map<String, String> headers, String payload, long validUntil) { | ||
| } | ||
| } |
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