kafka OAuthBearerScopeUtils 源码
kafka OAuthBearerScopeUtils 代码
文件路径:/clients/src/main/java/org/apache/kafka/common/security/oauthbearer/internals/unsecured/OAuthBearerScopeUtils.java
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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 org.apache.kafka.common.security.oauthbearer.internals.unsecured;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Objects;
import java.util.regex.Pattern;
/**
* Utility class for help dealing with
* <a href="https://tools.ietf.org/html/rfc6749#section-3.3">Access Token
* Scopes</a>
*/
public class OAuthBearerScopeUtils {
private static final Pattern INDIVIDUAL_SCOPE_ITEM_PATTERN = Pattern.compile("[\\x23-\\x5B\\x5D-\\x7E\\x21]+");
/**
* Return true if the given value meets the definition of a valid scope item as
* per <a href="https://tools.ietf.org/html/rfc6749#section-3.3">RFC 6749
* Section 3.3</a>, otherwise false
*
* @param scopeItem
* the mandatory scope item to check for validity
* @return true if the given value meets the definition of a valid scope item,
* otherwise false
*/
public static boolean isValidScopeItem(String scopeItem) {
return INDIVIDUAL_SCOPE_ITEM_PATTERN.matcher(Objects.requireNonNull(scopeItem)).matches();
}
/**
* Convert a space-delimited list of scope values (for example,
* <code>"scope1 scope2"</code>) to a List containing the individual elements
* (<code>"scope1"</code> and <code>"scope2"</code>)
*
* @param spaceDelimitedScope
* the mandatory (but possibly empty) space-delimited scope values,
* each of which must be valid according to
* {@link #isValidScopeItem(String)}
* @return the list of the given (possibly empty) space-delimited values
* @throws OAuthBearerConfigException
* if any of the individual scope values are malformed/illegal
*/
public static List<String> parseScope(String spaceDelimitedScope) throws OAuthBearerConfigException {
List<String> retval = new ArrayList<>();
for (String individualScopeItem : Objects.requireNonNull(spaceDelimitedScope).split(" ")) {
if (!individualScopeItem.isEmpty()) {
if (!isValidScopeItem(individualScopeItem))
throw new OAuthBearerConfigException(String.format("Invalid scope value: %s", individualScopeItem));
retval.add(individualScopeItem);
}
}
return Collections.unmodifiableList(retval);
}
private OAuthBearerScopeUtils() {
// empty
}
}
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