frostfs-sdk-java/client/src/test/java/info/frostfs/sdk/FileUtils.java

package info.frostfs.sdk;

import com.google.common.io.ByteStreams;
import lombok.SneakyThrows;
import org.apache.commons.lang3.StringUtils;

import java.io.InputStream;

import static java.util.Objects.isNull;

public class FileUtils {

    @SneakyThrows
    public static byte[] resourceToBytes(String resourcePath) {
        if (StringUtils.isBlank(resourcePath)) {
            throw new IllegalArgumentException("Blank filename!");
        }

        ClassLoader loader = FileUtils.class.getClassLoader();
        if (isNull(loader)) {
            throw new RuntimeException("Class loader is null!");
        }

        InputStream certStream = loader.getResourceAsStream(resourcePath);
        if (isNull(certStream)) {
            throw new RuntimeException("Resource could not be found!");
        }

        return ByteStreams.toByteArray(certStream);
    }
}