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/*
* 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.knox.gateway.trace;
import org.apache.knox.gateway.audit.api.CorrelationContext;
import org.apache.knox.gateway.audit.api.CorrelationService;
import org.apache.knox.gateway.audit.api.CorrelationServiceFactory;
import java.util.HashSet;
import java.util.Set;
import java.util.StringTokenizer;
public class TraceUtil {
private static CorrelationService cs = CorrelationServiceFactory.getCorrelationService();
static void appendCorrelationContext(final StringBuilder sb ) {
CorrelationContext cc = cs.getContext();
if( cc == null ) {
sb.append( "||" );
} else {
append( sb, cc.getRootRequestId() );
sb.append('|');
append( sb, cc.getParentRequestId() );
sb.append('|');
append( sb, cc.getRequestId() );
}
}
private static void append( final StringBuilder sb, final String s ) {
if( s != null ) {
sb.append( s );
}
}
static Set parseIntegerSet(String str ) {
Set set = new HashSet<>();
if( str != null && !str.trim().isEmpty() ) {
StringTokenizer parser = new StringTokenizer( str.trim(), ",", false );
while( parser.hasMoreTokens() ) {
addParsedIntegerToSet( set, parser.nextToken() );
}
}
return set;
}
private static void addParsedIntegerToSet( Set set, String str ) {
if( str != null && !str.trim().isEmpty() ) {
try {
set.add( Integer.valueOf( str.trim() ) );
} catch( NumberFormatException e ) {
// Ignore it.
}
}
}
}
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