kafka ConnectionState 源码
kafka ConnectionState 代码
文件路径：/clients/src/main/java/org/apache/kafka/clients/ConnectionState.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.clients;
/**
* The states of a node connection
*
* DISCONNECTED: connection has not been successfully established yet
* CONNECTING: connection is under progress
* CHECKING_API_VERSIONS: connection has been established and api versions check is in progress. Failure of this check will cause connection to close
* READY: connection is ready to send requests
* AUTHENTICATION_FAILED: connection failed due to an authentication error
*/
public enum ConnectionState {
DISCONNECTED, CONNECTING, CHECKING_API_VERSIONS, READY, AUTHENTICATION_FAILED;
public boolean isDisconnected() {
return this == AUTHENTICATION_FAILED || this == DISCONNECTED;
}
public boolean isConnected() {
return this == CHECKING_API_VERSIONS || this == READY;
}
}
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