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/**
* ============LICENSE_START=======================================================
* org.onap.aai
* ================================================================================
* Copyright © 2017-2018 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* 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.onap.aai.rest;
import java.util.List;
import java.util.concurrent.TimeUnit;
import javax.servlet.http.HttpServletRequest;
import javax.ws.rs.Consumes;
import javax.ws.rs.DefaultValue;
import javax.ws.rs.Encoded;
import javax.ws.rs.PUT;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.Produces;
import javax.ws.rs.QueryParam;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.HttpHeaders;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;
import javax.ws.rs.core.UriInfo;
import javax.ws.rs.core.Response.Status;
import org.onap.aai.concurrent.AaiCallable;
import org.onap.aai.dbmap.DBConnectionType;
import org.onap.aai.exceptions.AAIException;
import org.onap.aai.introspection.ModelType;
import org.onap.aai.logging.LoggingContext;
import org.onap.aai.logging.StopWatch;
import org.onap.aai.rest.db.HttpEntry;
import org.onap.aai.rest.dsl.DslQueryProcessor;
import org.onap.aai.rest.search.GenericQueryProcessor;
import org.onap.aai.rest.search.GremlinServerSingleton;
import org.onap.aai.rest.search.QueryProcessorType;
import org.onap.aai.restcore.HttpMethod;
import org.onap.aai.restcore.RESTAPI;
import org.onap.aai.serialization.db.DBSerializer;
import org.onap.aai.serialization.engines.TransactionalGraphEngine;
import org.onap.aai.serialization.queryformats.Format;
import org.onap.aai.serialization.queryformats.FormatFactory;
import org.onap.aai.serialization.queryformats.Formatter;
import org.onap.aai.serialization.queryformats.SubGraphStyle;
import org.onap.aai.setup.SchemaVersion;
import org.onap.aai.setup.SchemaVersions;
import org.onap.aai.util.AAIConfig;
import org.onap.aai.util.TraversalConstants;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import com.att.eelf.configuration.EELFLogger;
import com.att.eelf.configuration.EELFManager;
import com.google.gson.JsonElement;
import com.google.gson.JsonObject;
import com.google.gson.JsonParser;
@Path("{version: v[1-9][0-9]*|latest}/dsl")
public class DslConsumer extends RESTAPI {
private HttpEntry traversalUriHttpEntry;
private QueryProcessorType processorType = QueryProcessorType.LOCAL_GROOVY;
private static final String TARGET_ENTITY = "DB";
private static final EELFLogger LOGGER = EELFManager.getInstance().getLogger(DslConsumer.class);
private DslQueryProcessor dslQueryProcessor;
private SchemaVersions schemaVersions;
private String basePath;
private GremlinServerSingleton gremlinServerSingleton;
@Autowired
public DslConsumer(HttpEntry traversalUriHttpEntry, DslQueryProcessor dslQueryProcessor,
SchemaVersions schemaVersions, GremlinServerSingleton gremlinServerSingleton,
@Value("${schema.uri.base.path}") String basePath) {
this.traversalUriHttpEntry = traversalUriHttpEntry;
this.dslQueryProcessor = dslQueryProcessor;
this.schemaVersions = schemaVersions;
this.gremlinServerSingleton = gremlinServerSingleton;
this.basePath = basePath;
}
@PUT
@Consumes({ MediaType.APPLICATION_JSON })
@Produces({ MediaType.APPLICATION_JSON })
public Response executeQuery(String content, @PathParam("version") String versionParam,
@PathParam("uri") @Encoded String uri, @DefaultValue("graphson") @QueryParam("format") String queryFormat,
@DefaultValue("no_op") @QueryParam("subgraph") String subgraph, @Context HttpHeaders headers,
@Context UriInfo info, @Context HttpServletRequest req, @DefaultValue("-1") @QueryParam("resultIndex") String resultIndex, @DefaultValue("-1") @QueryParam("resultSize") String resultSize) {
return runner(TraversalConstants.AAI_TRAVERSAL_DSL_TIMEOUT_ENABLED,
TraversalConstants.AAI_TRAVERSAL_DSL_TIMEOUT_APP, TraversalConstants.AAI_TRAVERSAL_DSL_TIMEOUT_LIMIT,
headers, info, HttpMethod.PUT, new AaiCallable<Response>() {
@Override
public Response process() {
return processExecuteQuery(content, versionParam, uri, queryFormat, subgraph, headers, info,
req, resultIndex, resultSize);
}
});
}
public Response processExecuteQuery(String content, @PathParam("version") String versionParam,
@PathParam("uri") @Encoded String uri, @DefaultValue("graphson") @QueryParam("format") String queryFormat,
@DefaultValue("no_op") @QueryParam("subgraph") String subgraph, @Context HttpHeaders headers,
@Context UriInfo info, @Context HttpServletRequest req, @DefaultValue("-1") @QueryParam("resultIndex") String resultIndex, @DefaultValue("-1") @QueryParam("resultSize") String resultSize) {
String methodName = "executeDslQuery";
String sourceOfTruth = headers.getRequestHeaders().getFirst("X-FromAppId");
String dslOverride = headers.getRequestHeaders().getFirst("X-DslOverride");
String realTime = headers.getRequestHeaders().getFirst("Real-Time");
Response response;
SchemaVersion version = new SchemaVersion(versionParam);
TransactionalGraphEngine dbEngine = null;
try {
LoggingContext.save();
DBConnectionType type = this.determineConnectionType(sourceOfTruth, realTime);
traversalUriHttpEntry.setHttpEntryProperties(version, type);
traversalUriHttpEntry.setPaginationParameters(resultIndex, resultSize);
dbEngine = traversalUriHttpEntry.getDbEngine();
JsonObject input = new JsonParser().parse(content).getAsJsonObject();
JsonElement dslElement = input.get("dsl");
String dsl = "";
if (dslElement != null) {
dsl = dslElement.getAsString();
}
LoggingContext.targetEntity(TARGET_ENTITY);
LoggingContext.targetServiceName(methodName);
LoggingContext.startTime();
StopWatch.conditionalStart();
boolean isDslOverride = dslOverride != null && !AAIConfig.get(TraversalConstants.DSL_OVERRIDE).equals("false")
&& dslOverride.equals(AAIConfig.get(TraversalConstants.DSL_OVERRIDE));
if(isDslOverride)
dslQueryProcessor.setValidationFlag(false);
GenericQueryProcessor processor = new GenericQueryProcessor.Builder(dbEngine, gremlinServerSingleton)
.queryFrom(dsl, "dsl").queryProcessor(dslQueryProcessor).processWith(processorType).create();
String result = "";
SubGraphStyle subGraphStyle = SubGraphStyle.valueOf(subgraph);
List<Object> vertTemp = processor.execute(subGraphStyle);
List<Object> vertices = traversalUriHttpEntry.getPaginatedVertexList(vertTemp);
DBSerializer serializer = new DBSerializer(version, dbEngine, ModelType.MOXY, sourceOfTruth);
Format format = Format.getFormat(queryFormat);
FormatFactory ff = new FormatFactory(traversalUriHttpEntry.getLoader(), serializer, schemaVersions,
this.basePath);
Formatter formater = ff.get(format, info.getQueryParameters());
result = formater.output(vertices).toString();
double msecs = StopWatch.stopIfStarted();
LoggingContext.elapsedTime((long) msecs, TimeUnit.MILLISECONDS);
LoggingContext.successStatusFields();
LOGGER.info("Completed");
if(traversalUriHttpEntry.isPaginated()){
response = Response.status(Status.OK)
.type(MediaType.APPLICATION_JSON)
.header("total-results", traversalUriHttpEntry.getTotalVertices())
.header("total-pages", traversalUriHttpEntry.getTotalPaginationBuckets())
.entity(result)
.build();
}else {
response = Response.status(Status.OK)
.type(MediaType.APPLICATION_JSON)
.entity(result).build();
}
} catch (AAIException e) {
response = consumerExceptionResponseGenerator(headers, info, HttpMethod.PUT, e);
} catch (Exception e) {
AAIException ex = new AAIException("AAI_4000", e);
response = consumerExceptionResponseGenerator(headers, info, HttpMethod.PUT, ex);
} finally {
LoggingContext.restoreIfPossible();
LoggingContext.successStatusFields();
if (dbEngine != null) {
dbEngine.rollback();
}
}
return response;
}
}
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