
net.codestory.http.compilers.CacheEntry Maven / Gradle / Ivy
/**
* Copyright (C) 2013 [email protected]
*
* 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 net.codestory.http.compilers;
import static java.nio.charset.StandardCharsets.*;
import java.io.*;
import net.codestory.http.io.*;
public interface CacheEntry extends Serializable {
String content();
byte[] toBytes();
long lastModified();
public static CacheEntry disk(File file) {
return new CacheEntry() {
@Override
public String content() {
try {
try (InputStream input = new FileInputStream(file)) {
return InputStreams.readString(input, UTF_8);
}
} catch (IOException e) {
throw new IllegalStateException("Unable to read file", e);
}
}
@Override
public byte[] toBytes() {
try {
try (InputStream input = new FileInputStream(file)) {
return InputStreams.readBytes(input);
}
} catch (IOException e) {
throw new IllegalStateException("Unable to read file", e);
}
}
@Override
public long lastModified() {
return file.lastModified();
}
};
}
public static CacheEntry memory(String content) {
return new CacheEntry() {
private final long lastModified = System.currentTimeMillis();
@Override
public String content() {
return content;
}
@Override
public byte[] toBytes() {
return content.getBytes(UTF_8);
}
@Override
public long lastModified() {
return lastModified;
}
};
}
}
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