org.springframework.boot.web.embedded.tomcat.CompressionConnectorCustomizer Maven / Gradle / Ivy
/*
* Copyright 2012-2021 the original author or authors.
*
* 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
*
* https://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.springframework.boot.web.embedded.tomcat;
import org.apache.catalina.connector.Connector;
import org.apache.coyote.ProtocolHandler;
import org.apache.coyote.http11.AbstractHttp11Protocol;
import org.springframework.boot.web.server.Compression;
import org.springframework.util.StringUtils;
/**
* {@link TomcatConnectorCustomizer} that configures compression support on the given
* Connector.
*
* @author Brian Clozel
*/
class CompressionConnectorCustomizer implements TomcatConnectorCustomizer {
private final Compression compression;
CompressionConnectorCustomizer(Compression compression) {
this.compression = compression;
}
@Override
public void customize(Connector connector) {
if (this.compression != null && this.compression.getEnabled()) {
ProtocolHandler handler = connector.getProtocolHandler();
if (handler instanceof AbstractHttp11Protocol) {
customize((AbstractHttp11Protocol) handler);
}
}
}
private void customize(AbstractHttp11Protocol protocol) {
Compression compression = this.compression;
protocol.setCompression("on");
protocol.setCompressionMinSize(getMinResponseSize(compression));
protocol.setCompressibleMimeType(getMimeTypes(compression));
if (this.compression.getExcludedUserAgents() != null) {
protocol.setNoCompressionUserAgents(getExcludedUserAgents());
}
}
private int getMinResponseSize(Compression compression) {
return (int) compression.getMinResponseSize().toBytes();
}
private String getMimeTypes(Compression compression) {
return StringUtils.arrayToCommaDelimitedString(compression.getMimeTypes());
}
private String getExcludedUserAgents() {
return StringUtils.arrayToCommaDelimitedString(this.compression.getExcludedUserAgents());
}
}