94 lines
3.2 KiB
Java
94 lines
3.2 KiB
Java
/*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.apache.coyote;
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public enum ErrorState {
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/**
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* Not in an error state.
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*/
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NONE(false, 0, true, true),
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/**
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* The current request/response is in an error state and while it is safe to
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* complete the current response it is not safe to continue to use the
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* existing connection which must be closed once the response has been
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* completed. For multiplexed protocols, the channel must be closed when the
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* current request/response completes but the connection may continue.
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*/
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CLOSE_CLEAN(true, 1, true, true),
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/**
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* The current request/response is in an error state and it is not safe to
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* continue to use them. For multiplexed protocols (such as HTTP/2) the
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* stream/channel must be closed immediately but the connection may
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* continue. For non-multiplexed protocols (AJP, HTTP/1.x) the current
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* connection must be closed.
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*/
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CLOSE_NOW(true, 2, false, true),
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/**
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* An error has been detected that impacts the underlying network
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* connection. It is not safe to continue using the network connection which
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* must be closed immediately. For multiplexed protocols (such as HTTP/2)
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* this impacts all multiplexed channels.
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*/
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CLOSE_CONNECTION_NOW(true, 3, false, false);
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private final boolean error;
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private final int severity;
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private final boolean ioAllowed;
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private final boolean connectionIoAllowed;
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private ErrorState(boolean error, int severity, boolean ioAllowed,
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boolean connectionIoAllowed) {
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this.error = error;
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this.severity = severity;
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this.ioAllowed = ioAllowed;
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this.connectionIoAllowed = connectionIoAllowed;
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}
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public boolean isError() {
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return error;
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}
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/**
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* Compare this ErrorState with the provided ErrorState and return the most
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* severe.
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*
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* @param input The error state to compare to this one
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*
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* @return The most severe error state from the the provided error state and
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* this one
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*/
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public ErrorState getMostSevere(ErrorState input) {
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if (input.severity > this.severity) {
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return input;
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} else {
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return this;
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}
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}
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public boolean isIoAllowed() {
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return ioAllowed;
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}
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public boolean isConnectionIoAllowed() {
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return connectionIoAllowed;
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}
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}
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