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RESTHeart Commons - Common classes for core components and plugins.
/*-
* ========================LICENSE_START=================================
* restheart-commons
* %%
* Copyright (C) 2019 - 2024 SoftInstigate
* %%
* 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
*
* http://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.
* =========================LICENSE_END==================================
*/
package org.restheart.utils;
import io.undertow.server.HttpServerExchange;
import java.util.Date;
import java.util.TreeMap;
import org.bson.BsonBoolean;
import org.bson.BsonDateTime;
import org.bson.BsonDouble;
import org.bson.BsonInt32;
import org.bson.BsonInt64;
import org.bson.BsonMaxKey;
import org.bson.BsonMinKey;
import org.bson.BsonNull;
import org.bson.BsonNumber;
import org.bson.BsonObjectId;
import org.bson.BsonString;
import org.bson.BsonValue;
import org.bson.types.MaxKey;
import org.bson.types.MinKey;
import org.bson.types.ObjectId;
import org.restheart.exchange.ExchangeKeys.DOC_ID_TYPE;
import static org.restheart.exchange.ExchangeKeys.DOC_ID_TYPE_QPARAM_KEY;
import org.restheart.exchange.IllegalQueryParamenterException;
import org.restheart.exchange.MongoRequest;
import org.restheart.exchange.MongoResponse;
import org.restheart.exchange.UnsupportedDocumentIdException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
*
* @author Andrea Di Cesare {@literal }
*/
public class RepresentationUtils {
private static final Logger LOGGER = LoggerFactory
.getLogger(RepresentationUtils.class);
/**
*
* @param exchange
* @param size
* @return
* @throws IllegalQueryParamenterException
*/
public static TreeMap getPaginationLinks(
HttpServerExchange exchange,
long size) throws IllegalQueryParamenterException {
var request = MongoRequest.of(exchange);
String requestPath = URLUtils.removeTrailingSlashes(exchange.getRequestPath());
String queryString = URLUtils.decodeQueryString(exchange.getQueryString());
int page = request.getPage();
int pagesize = request.getPagesize();
long totalPages = 0;
if (size >= 0) {
float _size = size + 0f;
float _pagesize = pagesize + 0f;
totalPages = Math.max(1, Math.round(Math.ceil(_size / _pagesize)));
}
TreeMap links = new TreeMap<>();
if (queryString == null || queryString.isEmpty()) {
// i.e. the url contains the count paramenter and there is a next page
if (totalPages > 0 && page < totalPages) {
links.put("next", requestPath + "?page=" + (page + 1) + "&pagesize=" + pagesize);
}
} else {
String queryStringNoPagingProps = URLUtils.decodeQueryString(
URLUtils.getQueryStringRemovingParams(exchange, "page", "pagesize")
);
if (queryStringNoPagingProps == null || queryStringNoPagingProps.isEmpty()) {
links.put("first", requestPath + "?pagesize=" + pagesize);
links.put("next", requestPath + "?page=" + (page + 1) + "&pagesize=" + pagesize);
// i.e. the url contains the count paramenter
if (totalPages > 0) {
if (page < totalPages) {
links.put("last", requestPath
+ (totalPages != 1 ? "?page=" + totalPages : "")
+ "&pagesize=" + pagesize);
links.put("next", requestPath + "?page=" + (page + 1)
+ "&pagesize=" + pagesize + "&" + queryStringNoPagingProps);
} else {
links.put("last", requestPath + (totalPages != 1 ? "?page=" + totalPages : "")
+ "&pagesize=" + pagesize);
}
}
if (page > 1) {
links.put("previous", requestPath + "?page=" + (page - 1) + "&pagesize=" + pagesize);
}
} else {
links.put("first", requestPath + "?pagesize=" + pagesize + "&" + queryStringNoPagingProps);
if (totalPages <= 0) {
links.put("next", requestPath + "?page=" + (page + 1)
+ "&pagesize=" + pagesize + "&" + queryStringNoPagingProps);
}
// i.e. the url contains the count paramenter
if (totalPages > 0) {
if (page < totalPages) {
links.put("last", requestPath + (totalPages != 1 ? "?page=" + totalPages : "")
+ (totalPages == 1 ? "?pagesize=" : "&pagesize=") + pagesize
+ "&" + queryStringNoPagingProps);
links.put("next", requestPath + "?page=" + (page + 1)
+ "&pagesize=" + pagesize + "&" + queryStringNoPagingProps);
} else {
links.put("last", requestPath + (totalPages != 1 ? "?page=" + totalPages : "")
+ (totalPages == 1 ? "?pagesize=" : "&pagesize=")
+ pagesize + "&" + queryStringNoPagingProps);
}
}
if (page > 1) {
links.put("previous", requestPath + "?page=" + (page - 1)
+ "&pagesize=" + pagesize + "&" + queryStringNoPagingProps);
}
}
}
return links;
}
/**
*
* @param response
* @param parentUrl
* @param docId
* @return
*/
public static String getReferenceLink(
MongoResponse response,
String parentUrl,
BsonValue docId) {
if (response == null || parentUrl == null) {
LOGGER.error("error creating URI, null arguments: "
+ "response = {}, parentUrl = {}, docId = {}",
response,
parentUrl,
docId);
return "";
}
String uri = "#";
if (docId == null) {
uri = URLUtils.removeTrailingSlashes(parentUrl)
.concat("/")
.concat("_null");
} else if (docId.isString()
&& ObjectId.isValid(docId.asString().getValue())) {
uri = URLUtils.removeTrailingSlashes(parentUrl)
.concat("/")
.concat(docId.asString().getValue())
.concat("?")
.concat(DOC_ID_TYPE_QPARAM_KEY)
.concat("=")
.concat(DOC_ID_TYPE.STRING.name());
} else if (docId.isString()) {
uri = URLUtils.removeTrailingSlashes(parentUrl)
.concat("/")
.concat(docId.asString().getValue());
} else if (docId.isObjectId()) {
uri = URLUtils.removeTrailingSlashes(parentUrl)
.concat("/")
.concat(docId.asObjectId().getValue().toString());
} else if (docId.isBoolean()) {
uri = URLUtils.removeTrailingSlashes(parentUrl)
.concat("/")
.concat("_" + docId.asBoolean().getValue());
} else if (docId.isInt32()) {
uri = URLUtils.removeTrailingSlashes(parentUrl)
.concat("/")
.concat("" + docId.asInt32().getValue())
.concat("?")
.concat(DOC_ID_TYPE_QPARAM_KEY)
.concat("=")
.concat(DOC_ID_TYPE.NUMBER.name());
} else if (docId.isInt64()) {
uri = URLUtils.removeTrailingSlashes(parentUrl)
.concat("/")
.concat("" + docId.asInt64().getValue())
.concat("?")
.concat(DOC_ID_TYPE_QPARAM_KEY)
.concat("=")
.concat(DOC_ID_TYPE.NUMBER.name());
} else if (docId.isDouble()) {
uri = URLUtils.removeTrailingSlashes(parentUrl)
.concat("/")
.concat("" + docId.asDouble().getValue())
.concat("?")
.concat(DOC_ID_TYPE_QPARAM_KEY)
.concat("=")
.concat(DOC_ID_TYPE.NUMBER.name());
} else if (docId.isNull()) {
uri = URLUtils.removeTrailingSlashes(parentUrl)
.concat("/_null");
} else if (docId instanceof BsonMaxKey) {
uri = URLUtils.removeTrailingSlashes(parentUrl)
.concat("/_MaxKey");
} else if (docId instanceof BsonMinKey) {
uri = URLUtils.removeTrailingSlashes(parentUrl)
.concat("/_MinKey");
} else if (docId.isDateTime()) {
uri = URLUtils.removeTrailingSlashes(parentUrl)
.concat("/")
.concat("" + docId.asDateTime().getValue())
.concat("?")
.concat(DOC_ID_TYPE_QPARAM_KEY)
.concat("=")
.concat(DOC_ID_TYPE.DATE.name());
} else {
String _id;
try {
_id = URLUtils.getIdString(docId);
} catch (UnsupportedDocumentIdException uie) {
_id = docId.toString();
}
response.addWarning("resource with _id: "
+ _id + " does not have an URI "
+ "since the _id is of type "
+ docId.getClass().getSimpleName());
}
return uri;
}
/**
*
* @param parentUrl
* @param docId
* @return
*/
public static String getReferenceLink(String parentUrl, Object docId) {
if (parentUrl == null) {
LOGGER.error("error creating URI, null arguments: parentUrl = {}, docId = {}", parentUrl, docId);
return "";
}
String uri;
if (docId == null) {
uri = URLUtils.removeTrailingSlashes(parentUrl)
.concat("/")
.concat("_null");
} else if (docId instanceof String && ObjectId.isValid((String) docId)) {
uri = URLUtils.removeTrailingSlashes(parentUrl)
.concat("/")
.concat(docId.toString())
.concat("?")
.concat(DOC_ID_TYPE_QPARAM_KEY)
.concat("=")
.concat(DOC_ID_TYPE.STRING.name());
} else if (docId instanceof String || docId instanceof ObjectId) {
uri = URLUtils.removeTrailingSlashes(parentUrl)
.concat("/")
.concat(docId.toString());
} else if (docId instanceof BsonObjectId) {
uri = URLUtils.removeTrailingSlashes(parentUrl)
.concat("/")
.concat(((BsonObjectId) docId).getValue().toString());
} else if (docId instanceof BsonString) {
uri = URLUtils.removeTrailingSlashes(parentUrl)
.concat("/")
.concat(((BsonString) docId).getValue());
} else if (docId instanceof BsonBoolean) {
uri = URLUtils.removeTrailingSlashes(parentUrl)
.concat("/")
.concat("_" + ((BsonBoolean) docId).getValue());
} else if (docId instanceof BsonInt32) {
uri = URLUtils.removeTrailingSlashes(parentUrl)
.concat("/")
.concat("" + ((BsonNumber) docId).asInt32().getValue())
.concat("?")
.concat(DOC_ID_TYPE_QPARAM_KEY)
.concat("=")
.concat(DOC_ID_TYPE.NUMBER.name());
} else if (docId instanceof BsonInt64) {
uri = URLUtils.removeTrailingSlashes(parentUrl)
.concat("/")
.concat("" + ((BsonNumber) docId).asInt64().getValue())
.concat("?")
.concat(DOC_ID_TYPE_QPARAM_KEY)
.concat("=")
.concat(DOC_ID_TYPE.NUMBER.name());
} else if (docId instanceof BsonDouble) {
uri = URLUtils.removeTrailingSlashes(parentUrl)
.concat("/")
.concat("" + ((BsonDouble) docId).asDouble().getValue())
.concat("?")
.concat(DOC_ID_TYPE_QPARAM_KEY)
.concat("=")
.concat(DOC_ID_TYPE.NUMBER.name());
} else if (docId instanceof BsonNull) {
uri = URLUtils.removeTrailingSlashes(parentUrl)
.concat("/_null");
} else if (docId instanceof BsonMaxKey) {
uri = URLUtils.removeTrailingSlashes(parentUrl)
.concat("/_MaxKey");
} else if (docId instanceof BsonMinKey) {
uri = URLUtils.removeTrailingSlashes(parentUrl)
.concat("/_MinKey");
} else if (docId instanceof BsonDateTime) {
uri = URLUtils.removeTrailingSlashes(parentUrl)
.concat("/")
.concat("" + ((BsonDateTime) docId).getValue())
.concat("?")
.concat(DOC_ID_TYPE_QPARAM_KEY)
.concat("=")
.concat(DOC_ID_TYPE.DATE.name());
} else if (docId instanceof Integer) {
uri = URLUtils.removeTrailingSlashes(parentUrl)
.concat("/")
.concat(docId.toString())
.concat("?")
.concat(DOC_ID_TYPE_QPARAM_KEY)
.concat("=")
.concat(DOC_ID_TYPE.NUMBER.name());
} else if (docId instanceof Long) {
uri = URLUtils.removeTrailingSlashes(parentUrl)
.concat("/")
.concat(docId.toString())
.concat("?")
.concat(DOC_ID_TYPE_QPARAM_KEY)
.concat("=")
.concat(DOC_ID_TYPE.NUMBER.name());
} else if (docId instanceof Float) {
uri = URLUtils.removeTrailingSlashes(parentUrl)
.concat("/")
.concat(docId.toString())
.concat("?")
.concat(DOC_ID_TYPE_QPARAM_KEY)
.concat("=")
.concat(DOC_ID_TYPE.NUMBER.name());
} else if (docId instanceof Double) {
uri = URLUtils.removeTrailingSlashes(parentUrl)
.concat("/")
.concat(docId.toString())
.concat("?")
.concat(DOC_ID_TYPE_QPARAM_KEY)
.concat("=")
.concat(DOC_ID_TYPE.NUMBER.name());
} else if (docId instanceof MinKey) {
uri = URLUtils.removeTrailingSlashes(parentUrl)
.concat("/")
.concat("_MinKey");
} else if (docId instanceof MaxKey) {
uri = URLUtils.removeTrailingSlashes(parentUrl)
.concat("/")
.concat("_MaxKey");
} else if (docId instanceof Date) {
uri = URLUtils.removeTrailingSlashes(parentUrl)
.concat("/")
.concat(((Date) docId).getTime() + "")
.concat("?")
.concat(DOC_ID_TYPE_QPARAM_KEY)
.concat("=")
.concat(DOC_ID_TYPE.DATE.name());
} else if (docId instanceof Boolean) {
uri = URLUtils.removeTrailingSlashes(parentUrl)
.concat("/")
.concat("_" + (boolean) docId);
} else {
uri = URLUtils.removeTrailingSlashes(parentUrl)
.concat("/")
.concat("_? (unsuppored _id type)");
}
return uri;
}
}
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