io.vertx.redis.impl.ScriptImpl Maven / Gradle / Ivy
package io.vertx.redis.impl;
import java.nio.charset.Charset;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
@Deprecated
public class ScriptImpl implements io.vertx.redis.Script {
private final String script;
private final String sha1;
private static final char[] DIGITS_LOWER =
{'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'};
public ScriptImpl(String script) {
this(script, digestSha1(script));
}
public ScriptImpl(String script, byte[] sha1) {
this(script, String.valueOf(encodeHex(sha1)));
}
public ScriptImpl(String script, String sha1) {
this.script = script;
this.sha1 = sha1;
}
private static byte[] digestSha1(String script) {
final MessageDigest sha1;
try {
sha1 = MessageDigest.getInstance("SHA1");
} catch (NoSuchAlgorithmException e) {
throw new RuntimeException(e);
}
return sha1.digest(script.getBytes(Charset.forName("UTF-8")));
}
private static char[] encodeHex(byte[] data) {
final int l = data.length;
final char[] out = new char[l << 1];
// two characters form the hex value.
for (int i = 0, j = 0; i < l; i++) {
out[j++] = DIGITS_LOWER[(0xF0 & data[i]) >>> 4];
out[j++] = DIGITS_LOWER[0x0F & data[i]];
}
return out;
}
@Override
public String getScript() {
return script;
}
@Override
public String getSha1() {
return sha1;
}
}