/*
* Copyright (c) 2013, Francis Galiegue <fgaliegue@gmail.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the Lesser GNU General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program 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
* Lesser GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package com.github.fge.jsonschema.process;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.node.JsonNodeFactory;
import com.fasterxml.jackson.databind.node.ObjectNode;
import com.github.fge.jackson.JacksonUtils;
import com.github.fge.jackson.JsonNodeReader;
import com.github.fge.jsonschema.constants.ParseError;
import com.github.fge.jsonschema.core.report.ProcessingReport;
import com.github.fge.jsonschema.core.util.AsJson;
import com.github.fge.jsonschema.main.JsonSchemaFactory;
import com.github.fge.jsonschema.main.JsonValidator;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.ws.rs.Consumes;
import javax.ws.rs.FormParam;
import javax.ws.rs.POST;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;
import java.io.IOException;
import java.io.StringReader;
import static com.github.fge.jsonschema.constants.ResponseFields.*;
@Path("/index")
@Produces("application/json;charset=utf-8")
public final class Index
{
private static final Logger log = LoggerFactory.getLogger(Index.class);
private static final Response BAD = Response.status(400).build();
private static final Response OOPS = Response.status(500).build();
private static final JsonValidator VALIDATOR
= JsonSchemaFactory.byDefault().getValidator();
private static final JsonNodeReader NODE_READER
= new JsonNodeReader();
@POST
@Consumes(MediaType.APPLICATION_FORM_URLENCODED)
public static Response validate(
@FormParam("input") final String schema,
@FormParam("input2") final String data
)
{
if (schema == null || data == null)
return BAD;
try {
final JsonNode ret = buildResult(schema, data);
return Response.ok().entity(ret.toString()).build();
} catch (IOException e) {
log.error("I/O error while validating data", e);
return OOPS;
}
}
/*
* Build the response. When we arrive here, we are guaranteed that we have
* the needed elements.
*/
private static JsonNode buildResult(final String rawSchema,
final String rawData)
throws IOException
{
final ObjectNode ret = JsonNodeFactory.instance.objectNode();
final boolean invalidSchema = fillWithData(ret, INPUT, INVALID_INPUT,
rawSchema);
final boolean invalidData = fillWithData(ret, INPUT2, INVALID_INPUT2,
rawData);
final JsonNode schemaNode = ret.remove(INPUT);
final JsonNode data = ret.remove(INPUT2);
if (invalidSchema || invalidData)
return ret;
final ProcessingReport report
= VALIDATOR.validateUnchecked(schemaNode, data);
final boolean success = report.isSuccess();
ret.put(VALID, success);
final JsonNode node = ((AsJson) report).asJson();
ret.put(RESULTS, JacksonUtils.prettyPrint(node));
return ret;
}
/*
* We have to use that since Java is not smart enough to detect that
* sometimes, a variable is initialized in all paths.
*
* This returns true if the data is invalid.
*/
private static boolean fillWithData(final ObjectNode node,
final String onSuccess, final String onFailure, final String raw)
throws IOException
{
try {
node.put(onSuccess, NODE_READER.fromReader(new StringReader(raw)));
return false;
} catch (JsonProcessingException e) {
node.put(onFailure, ParseError.build(e, raw.contains("\r\n")));
return true;
}
}
}