kafka CredentialProvider 源码
kafka CredentialProvider 代码
文件路径：/core/src/main/scala/kafka/security/CredentialProvider.scala
/**
* 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 kafka.security
import java.util.{Collection, Properties}
import org.apache.kafka.common.security.authenticator.CredentialCache
import org.apache.kafka.common.security.scram.ScramCredential
import org.apache.kafka.common.config.ConfigDef
import org.apache.kafka.common.config.ConfigDef._
import org.apache.kafka.common.security.scram.internals.{ScramCredentialUtils, ScramMechanism}
import org.apache.kafka.common.security.token.delegation.internals.DelegationTokenCache
class CredentialProvider(scramMechanisms: Collection[String], val tokenCache: DelegationTokenCache) {
val credentialCache = new CredentialCache
ScramCredentialUtils.createCache(credentialCache, scramMechanisms)
def updateCredentials(username: String, config: Properties): Unit = {
for (mechanism <- ScramMechanism.values()) {
val cache = credentialCache.cache(mechanism.mechanismName, classOf[ScramCredential])
if (cache != null) {
config.getProperty(mechanism.mechanismName) match {
case null => cache.remove(username)
case c => cache.put(username, ScramCredentialUtils.credentialFromString(c))
}
}
}
}
}
object CredentialProvider {
def userCredentialConfigs: ConfigDef = {
ScramMechanism.values.foldLeft(new ConfigDef) {
(c, m) => c.define(m.mechanismName, Type.STRING, null, Importance.MEDIUM, s"User credentials for SCRAM mechanism ${m.mechanismName}")
}
}
}
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