io.opentelemetry.contrib.resourceproviders.TomeeAppServer Maven / Gradle / Ivy
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/*
* Copyright The OpenTelemetry Authors
* SPDX-License-Identifier: Apache-2.0
*/
package io.opentelemetry.contrib.resourceproviders;
import java.net.URISyntaxException;
import java.net.URL;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import javax.annotation.Nullable;
class TomeeAppServer implements AppServer {
private static final String SERVER_CLASS_NAME = "org.apache.catalina.startup.Bootstrap";
private final ResourceLocator locator;
TomeeAppServer(ResourceLocator locator) {
this.locator = locator;
}
@Nullable
@Override
public Path getDeploymentDir() throws URISyntaxException {
Path rootDir = getRootDir();
if (rootDir == null) {
return null;
}
// check for presence of tomee configuration file, if it doesn't exist then we have tomcat not
// tomee
if (!Files.isRegularFile(rootDir.resolve("conf/tomee.xml"))) {
return null;
}
// tomee deployment directory is configurable, we'll only look at the default 'apps' directory
// to get the actual deployment directory (or see whether it is enabled at all) we would need to
// parse conf/tomee.xml
// tomee also deploys applications from webapps directory, detecting them is handled by
// TomcatServiceNameDetector
return rootDir.resolve("apps");
}
@Nullable
@Override
public Class getServerClass() {
return locator.findClass(SERVER_CLASS_NAME);
}
@Nullable
private Path getRootDir() throws URISyntaxException {
String catalinaBase = System.getProperty("catalina.base");
if (catalinaBase != null) {
return Paths.get(catalinaBase);
}
String catalinaHome = System.getProperty("catalina.home");
if (catalinaHome != null) {
return Paths.get(catalinaHome);
}
// if neither catalina.base nor catalina.home is set try to deduce the location of based on the
// loaded server class.
Class serverClass = getServerClass();
if (serverClass == null) {
return null;
}
URL jarUrl = locator.getClassLocation(serverClass);
Path jarPath = Paths.get(jarUrl.toURI());
// jar is in bin/. First call to getParent strips jar name and the second bin/. We'll end up
// with a path to server root.
Path parent = jarPath.getParent();
if (parent == null) {
return null;
}
return parent.getParent();
}
}