Plan/Plan/common/src/main/java/com/djrapitops/plan/delivery/webserver/resolver/json/JSONResolver.java

68 lines
2.8 KiB
Java

/*
* This file is part of Player Analytics (Plan).
*
* Plan is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License v3 as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Plan is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with Plan. If not, see <https://www.gnu.org/licenses/>.
*/
package com.djrapitops.plan.delivery.webserver.resolver.json;
import com.djrapitops.plan.delivery.formatting.Formatter;
import com.djrapitops.plan.delivery.web.resolver.MimeType;
import com.djrapitops.plan.delivery.web.resolver.Resolver;
import com.djrapitops.plan.delivery.web.resolver.Response;
import com.djrapitops.plan.delivery.web.resolver.request.Request;
import com.djrapitops.plan.delivery.webserver.CacheStrategy;
import com.djrapitops.plan.delivery.webserver.cache.JSONStorage;
import com.djrapitops.plan.identification.Identifiers;
import com.djrapitops.plan.utilities.dev.Untrusted;
import com.djrapitops.plan.utilities.java.Maps;
import org.eclipse.jetty.http.HttpHeader;
import java.util.Optional;
/**
* @author AuroraLS3
*/
public abstract class JSONResolver implements Resolver {
protected Response getCachedOrNewResponse(@Untrusted Request request, JSONStorage.StoredJSON storedJSON) {
if (storedJSON == null) {
return Response.builder()
.setMimeType(MimeType.JSON)
.setJSONContent(Maps.builder(String.class, String.class)
.put("error", "Json failed to generate for some reason, see /Plan/logs for errors")
.build())
.build();
}
Optional<Long> browserCached = Identifiers.getEtag(request);
if (browserCached.isPresent() && browserCached.get() == storedJSON.getTimestamp()) {
return Response.builder()
.setStatus(304)
.setContent(new byte[0])
.build();
}
return Response.builder()
.setMimeType(MimeType.JSON)
.setJSONContent(storedJSON.getJson())
.setHeader(HttpHeader.CACHE_CONTROL.asString(), CacheStrategy.CHECK_ETAG_USER_SPECIFIC)
.setHeader(HttpHeader.LAST_MODIFIED.asString(), getHttpLastModifiedFormatter().apply(storedJSON.getTimestamp()))
.setHeader(HttpHeader.ETAG.asString(), storedJSON.getTimestamp())
.build();
}
protected abstract Formatter<Long> getHttpLastModifiedFormatter();
}