40 lines
1.3 KiB
Java
40 lines
1.3 KiB
Java
package io.gitlab.jfronny.inceptum.common;
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import io.gitlab.jfronny.commons.io.JFiles;
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import io.gitlab.jfronny.commons.throwable.ThrowingFunction;
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import io.gitlab.jfronny.commons.throwable.ThrowingSupplier;
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import java.io.IOException;
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import java.nio.file.Files;
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import java.nio.file.Path;
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import java.util.concurrent.ConcurrentHashMap;
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public class ObjectCache {
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private final ConcurrentHashMap<String, Object> container = new ConcurrentHashMap<>();
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private final Path cacheDir;
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public ObjectCache(Path cacheDir) {
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this.cacheDir = cacheDir;
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}
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public void remove(String key) throws IOException {
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container.remove(key);
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Files.delete(cacheDir.resolve(key));
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}
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public void clear() throws IOException {
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container.clear();
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JFiles.clearDirectory(cacheDir);
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}
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public <T, TEx extends Throwable> T get(String key, ThrowingSupplier<String, ? extends TEx> download, ThrowingFunction<String, T, ? extends TEx> builder) throws IOException, TEx {
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if (!container.containsKey(key)) {
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Path cd = cacheDir.resolve(key);
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if (Files.exists(cd)) container[key] = builder.apply(Files.readString(cd));
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else container[key] = builder.apply(download.get());
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}
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//noinspection unchecked
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return (T) container[key];
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}
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}
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