io.undertow.attribute.BytesSentAttribute Maven / Gradle / Ivy
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* Copyright 2014 Red Hat, Inc., and individual contributors
* as indicated by the @author tags.
*
* Licensed 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 io.undertow.attribute;
import io.undertow.server.HttpServerExchange;
/**
* The bytes sent
*
* @author Filipe Ferraz
*/
public class BytesSentAttribute implements ExchangeAttribute {
public static final String BYTES_SENT_SHORT_UPPER = "%B";
public static final String BYTES_SENT_SHORT_LOWER = "%b";
public static final String BYTES_SENT = "%{BYTES_SENT}";
private final boolean dashIfZero;
public BytesSentAttribute(boolean dashIfZero) {
this.dashIfZero = dashIfZero;
}
@Override
public String readAttribute(final HttpServerExchange exchange) {
if (dashIfZero ) {
long bytesSent = exchange.getResponseBytesSent();
return bytesSent == 0 ? "-" : Long.toString(bytesSent);
} else {
return Long.toString(exchange.getResponseBytesSent());
}
}
@Override
public void writeAttribute(final HttpServerExchange exchange, final String newValue) throws ReadOnlyAttributeException {
throw new ReadOnlyAttributeException("Bytes sent", newValue);
}
public static final class Builder implements ExchangeAttributeBuilder {
@Override
public String name() {
return "Bytes Sent";
}
@Override
public ExchangeAttribute build(final String token) {
if(token.equals(BYTES_SENT_SHORT_LOWER)) {
return new BytesSentAttribute(true);
}
if (token.equals(BYTES_SENT) || token.equals(BYTES_SENT_SHORT_UPPER)) {
return new BytesSentAttribute(false);
}
return null;
}
@Override
public int priority() {
return 0;
}
}
}