com.uber.tchannel.headers.RetryFlag Maven / Gradle / Ivy
/*
* Copyright (c) 2015 Uber Technologies, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package com.uber.tchannel.headers;
import java.util.HashSet;
import java.util.Set;
public enum RetryFlag {
NoRetry('n'),
RetryOnConnectionError('c'),
RetryOnTimeout('t');
private char flag;
RetryFlag(char flag) {
this.flag = flag;
}
public static RetryFlag toRetryFlag(char c) {
switch (c) {
case 'n':
return NoRetry;
case 'c':
return RetryOnConnectionError;
case 't':
return RetryOnTimeout;
default:
return null;
}
}
public static Set parseFlags(String flags) {
Set retryFlags = new HashSet<>();
for (char c : flags.toCharArray()) {
retryFlags.add(toRetryFlag(c));
}
return retryFlags;
}
public static String flagsToString(Set flags) {
StringBuilder sb = new StringBuilder();
for (RetryFlag flag : flags) {
sb.append(flag.toString());
}
return sb.toString();
}
public static boolean validFlags(String flags) {
switch (flags) {
case "c":
case "t":
case "n":
case "ct":
case "tc":
return true;
default:
return false;
}
}
public char getFlag() {
return flag;
}
}