io.micrometer.core.instrument.binder.httpcomponents.DefaultUriMapper Maven / Gradle / Ivy
Show all versions of micrometer-core Show documentation
/**
* Copyright 2020 VMware, Inc.
*
* 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 io.micrometer.core.instrument.binder.httpcomponents;
import org.apache.http.Header;
import org.apache.http.HttpRequest;
import java.util.function.Function;
/**
* Extracts the URI pattern from the predefined request header, {@value DefaultUriMapper#URI_PATTERN_HEADER} if available.
*
* @author Benjamin Hubert
* @since 1.4.0
*/
public class DefaultUriMapper implements Function {
/**
* Header name for URI pattern.
*/
public static final String URI_PATTERN_HEADER = "URI_PATTERN";
@Override
public String apply(HttpRequest httpRequest) {
Header uriPattern = httpRequest.getLastHeader(URI_PATTERN_HEADER);
if (uriPattern != null && uriPattern.getValue() != null) {
return uriPattern.getValue();
}
return "UNKNOWN";
}
}