info.unterrainer.commons.httpserver.handlers.AppVersionHandler Maven / Gradle / Ivy
package info.unterrainer.commons.httpserver.handlers;
import java.util.ArrayList;
import java.util.List;
import info.unterrainer.commons.httpserver.enums.Attribute;
import info.unterrainer.commons.httpserver.jsons.AppVersionJson;
import info.unterrainer.commons.httpserver.jsons.VersionsJson;
import info.unterrainer.commons.jreutils.ForName;
import io.javalin.http.Context;
import io.javalin.http.Handler;
import lombok.RequiredArgsConstructor;
@RequiredArgsConstructor
public class AppVersionHandler implements Handler {
private final static String NAME = "name";
private final static String BUILD_TIME = "buildTime";
private final static String POM_VERSION = "pomVersion";
private final List appVersionFqns;
private VersionsJson message;
@Override
public void handle(final Context ctx) throws Exception {
if (message == null)
message = buildMessage();
ctx.attribute(Attribute.RESPONSE_OBJECT, message);
ctx.attribute(Attribute.RESPONSE_STATUS, 200);
}
private VersionsJson buildMessage() {
List versions = new ArrayList<>();
for (String fqn : appVersionFqns) {
Class clazz = ForName.get(fqn);
if (clazz == null)
continue;
String name;
String buildTime;
String pomVersion;
try {
name = (String) clazz.getField(NAME).get(null);
buildTime = (String) clazz.getField(BUILD_TIME).get(null);
pomVersion = (String) clazz.getField(POM_VERSION).get(null);
} catch (IllegalAccessException | IllegalArgumentException | SecurityException | NoSuchFieldException e) {
continue;
}
AppVersionJson av = AppVersionJson.builder().name(name).pomVersion(pomVersion).buildTime(buildTime).build();
versions.add(av);
}
return VersionsJson.builder().Versions(versions).build();
}
}