hadoop FileSignerSecretProvider 源码
haddop FileSignerSecretProvider 代码
文件路径：/hadoop-common-project/hadoop-auth/src/main/java/org/apache/hadoop/security/authentication/util/FileSignerSecretProvider.java
/**
* 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. See accompanying LICENSE file.
*/
package org.apache.hadoop.security.authentication.util;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.classification.InterfaceStability;
import org.apache.hadoop.security.authentication.server.AuthenticationFilter;
import javax.servlet.ServletContext;
import java.io.*;
import java.nio.charset.StandardCharsets;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.util.Properties;
/**
* A SignerSecretProvider that simply loads a secret from a specified file.
*/
@InterfaceStability.Unstable
@InterfaceAudience.Private
public class FileSignerSecretProvider extends SignerSecretProvider {
private byte[] secret;
private byte[][] secrets;
public FileSignerSecretProvider() {}
@Override
public void init(Properties config, ServletContext servletContext,
long tokenValidity) throws Exception {
String signatureSecretFile = config.getProperty(
AuthenticationFilter.SIGNATURE_SECRET_FILE, null);
if (signatureSecretFile != null) {
try (Reader reader = new InputStreamReader(Files.newInputStream(
Paths.get(signatureSecretFile)), StandardCharsets.UTF_8)) {
StringBuilder sb = new StringBuilder();
int c = reader.read();
while (c > -1) {
sb.append((char) c);
c = reader.read();
}
secret = sb.toString().getBytes(StandardCharsets.UTF_8);
if (secret.length == 0) {
throw new RuntimeException("No secret in signature secret file: "
+ signatureSecretFile);
}
} catch (IOException ex) {
throw new RuntimeException("Could not read signature secret file: " +
signatureSecretFile);
}
}
secrets = new byte[][]{secret};
}
@Override
public byte[] getCurrentSecret() {
return secret;
}
@Override
public byte[][] getAllSecrets() {
return secrets;
}
}
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