/** * ============LICENSE_START======================================================= * org.onap.aai * ================================================================================ * Copyright © 2017-2018 AT&T Intellectual Property. All rights reserved. * Copyright © 2017-2018 Amdocs * ================================================================================ * 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.crud.service; import java.security.cert.X509Certificate; import java.util.AbstractMap; import java.util.HashSet; import java.util.Map; import java.util.Map.Entry; import java.util.Set; import javax.security.auth.x500.X500Principal; import javax.servlet.http.HttpServletRequest; import javax.ws.rs.Consumes; import javax.ws.rs.Encoded; import javax.ws.rs.POST; import javax.ws.rs.PUT; import javax.ws.rs.Path; import javax.ws.rs.PathParam; import javax.ws.rs.Produces; 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.exceptions.AAIException; import org.onap.aai.serialization.db.EdgeProperty; import org.onap.aai.serialization.db.EdgeRule; import org.onap.aai.serialization.db.EdgeRules; import org.onap.aai.serialization.db.EdgeType; import org.onap.aaiauth.auth.Auth; import org.onap.aai.cl.api.Logger; import org.onap.aai.cl.eelf.LoggerFactory; import org.onap.crud.exception.CrudException; import org.onap.crud.logging.CrudServiceMsgs; import org.onap.crud.logging.LoggingUtil; import org.onap.crud.service.CrudRestService.Action; import org.onap.crud.util.CrudServiceConstants; import org.onap.schema.RelationshipSchemaLoader; import org.onap.schema.RelationshipSchemaValidator; import org.slf4j.MDC; import com.google.gson.Gson; import com.google.gson.JsonElement; import com.google.gson.JsonPrimitive; /** * This defines a set of REST endpoints which allow clients to create or update graph edges * where the edge rules defined by the A&AI will be invoked to automatically populate the * defined edge properties. */ public class AaiResourceService { private String mediaType = MediaType.APPLICATION_JSON; public static final String HTTP_PATCH_METHOD_OVERRIDE = "X-HTTP-Method-Override"; private Auth auth; AbstractGraphDataService graphDataService; Gson gson = new Gson(); private Logger logger = LoggerFactory.getInstance().getLogger(AaiResourceService.class.getName()); private Logger auditLogger = LoggerFactory.getInstance().getAuditLogger(AaiResourceService.class.getName()); public AaiResourceService() {} /** * Creates a new instance of the AaiResourceService. * * @param crudGraphDataService - Service used for interacting with the graph. * * @throws Exception */ public AaiResourceService(AbstractGraphDataService graphDataService) throws Exception { this.graphDataService = graphDataService; this.auth = new Auth(CrudServiceConstants.CRD_AUTH_FILE); } /** * Perform any one-time initialization required when starting the service. */ public void startup() { if(logger.isDebugEnabled()) { logger.debug("AaiResourceService started!"); } } /** * Creates a new relationship in the graph, automatically populating the edge * properties based on the A&AI edge rules. * * @param content - Json structure describing the relationship to create. * @param type - Relationship type supplied as a URI parameter. * @param uri - Http request uri * @param headers - Http request headers * @param uriInfo - Http URI info field * @param req - Http request structure. * * @return - Standard HTTP response. */ @POST @Path("/relationships/{type}/") @Consumes({MediaType.APPLICATION_JSON}) @Produces({MediaType.APPLICATION_JSON}) public Response createRelationship(String content, @PathParam("type") String type, @PathParam("uri") @Encoded String uri, @Context HttpHeaders headers, @Context UriInfo uriInfo, @Context HttpServletRequest req) { LoggingUtil.initMdcContext(req, headers); if(logger.isDebugEnabled()) { logger.debug("Incoming request..." + content); } Response response = null; if (validateRequest(req, uri, content, Action.POST, CrudServiceConstants.CRD_AUTH_POLICY_NAME)) { try { // Extract the edge payload from the request. EdgePayload payload = EdgePayload.fromJson(content); // Do some basic validation on the payload. if (payload.getProperties() == null || payload.getProperties().isJsonNull()) { throw new CrudException("Invalid request Payload", Status.BAD_REQUEST); } if (payload.getId() != null) { throw new CrudException("ID specified , use Http PUT to update Edge", Status.BAD_REQUEST); } if (payload.getType() != null && !payload.getType().equals(type)) { throw new CrudException("Edge Type mismatch", Status.BAD_REQUEST); } // Apply the edge rules to our edge. payload = applyEdgeRulesToPayload(payload); if(logger.isDebugEnabled()) { logger.debug("Creating AAI edge using version " + RelationshipSchemaLoader.getLatestSchemaVersion() ); } // Now, create our edge in the graph store. String result = graphDataService.addEdge(RelationshipSchemaLoader.getLatestSchemaVersion(), type, payload); response = Response.status(Status.CREATED).entity(result).type(mediaType).build(); } catch (CrudException e) { response = Response.status(Status.INTERNAL_SERVER_ERROR).entity(e.getMessage()).build(); } } LoggingUtil.logRestRequest(logger, auditLogger, req, response); return response; } /** * Creates a new relationship in the graph, automatically populating the edge * properties based on the A&AI edge rules. * * @param content - Json structure describing the relationship to create. * @param uri - Http request uri * @param headers - Http request headers * @param uriInfo - Http URI info field * @param req - Http request structure. * * @return - Standard HTTP response. * */ @POST @Path("/relationships/") @Consumes({MediaType.APPLICATION_JSON}) @Produces({MediaType.APPLICATION_JSON}) public Response createRelationship(String content, @PathParam("uri") @Encoded String uri, @Context HttpHeaders headers, @Context UriInfo uriInfo, @Context HttpServletRequest req) { LoggingUtil.initMdcContext(req, headers); logger.debug("Incoming request..." + content); Response response = null; if (validateRequest(req, uri, content, Action.POST, CrudServiceConstants.CRD_AUTH_POLICY_NAME)) { try { // Extract the edge payload from the request. EdgePayload payload = EdgePayload.fromJson(content); // Do some basic validation on the payload. if (payload.getProperties() == null || payload.getProperties().isJsonNull()) { throw new CrudException("Invalid request Payload", Status.BAD_REQUEST); } if (payload.getId() != null) { throw new CrudException("ID specified , use Http PUT to update Edge", Status.BAD_REQUEST); } if (payload.getType() == null || payload.getType().isEmpty()) { throw new CrudException("Missing Edge Type ", Status.BAD_REQUEST); } // Apply the edge rules to our edge. payload = applyEdgeRulesToPayload(payload); // Now, create our edge in the graph store. String result = graphDataService.addEdge(RelationshipSchemaLoader.getLatestSchemaVersion(), payload.getType(), payload); response = Response.status(Status.CREATED).entity(result).type(mediaType).build(); } catch (CrudException ce) { response = Response.status(ce.getHttpStatus()).entity(ce.getMessage()).build(); } catch (Exception e) { response = Response.status(Status.INTERNAL_SERVER_ERROR).entity(e.getMessage()).build(); } } else { response = Response.status(Status.FORBIDDEN).entity(content) .type(MediaType.APPLICATION_JSON).build(); } LoggingUtil.logRestRequest(logger, auditLogger, req, response); return response; } /** * Upserts a relationship into the graph, automatically populating the edge properties * based on the A&AI edge rules. The behaviour is as follows: *

*

  • If no relationship with the supplied identifier already exists, then a new relationship * is created with that id.
    *
  • If a relationship with the supplied id DOES exist, then it is replaced with the supplied * content. * * @param content - Json structure describing the relationship to create. * @param type - Relationship type supplied as a URI parameter. * @param id - Edge identifier. * @param uri - Http request uri * @param headers - Http request headers * @param uriInfo - Http URI info field * @param req - Http request structure. * * @return - Standard HTTP response. */ @PUT @Path("/relationships/{type}/{id}") @Consumes({MediaType.APPLICATION_JSON}) @Produces({MediaType.APPLICATION_JSON}) public Response upsertEdge(String content, @PathParam("type") String type, @PathParam("id") String id, @PathParam("uri") @Encoded String uri, @Context HttpHeaders headers, @Context UriInfo uriInfo, @Context HttpServletRequest req) { LoggingUtil.initMdcContext(req, headers); logger.debug("Incoming request..." + content); Response response = null; if (validateRequest(req, uri, content, Action.PUT, CrudServiceConstants.CRD_AUTH_POLICY_NAME)) { try { // Extract the edge payload from the request. EdgePayload payload = EdgePayload.fromJson(content); // Do some basic validation on the payload. if (payload.getProperties() == null || payload.getProperties().isJsonNull()) { throw new CrudException("Invalid request Payload", Status.BAD_REQUEST); } if (payload.getId() != null && !payload.getId().equals(id)) { throw new CrudException("ID Mismatch", Status.BAD_REQUEST); } // Apply the edge rules to our edge. payload = applyEdgeRulesToPayload(payload); String result; if (headers.getRequestHeaders().getFirst(HTTP_PATCH_METHOD_OVERRIDE) != null && headers.getRequestHeaders().getFirst(HTTP_PATCH_METHOD_OVERRIDE).equalsIgnoreCase("PATCH")) { result = graphDataService.patchEdge(RelationshipSchemaLoader.getLatestSchemaVersion(), id, type, payload); } else { result = graphDataService.updateEdge(RelationshipSchemaLoader.getLatestSchemaVersion(), id, type, payload); } response = Response.status(Status.OK).entity(result).type(mediaType).build(); } catch (CrudException ce) { response = Response.status(ce.getHttpStatus()).entity(ce.getMessage()).build(); } catch (Exception e) { response = Response.status(Status.INTERNAL_SERVER_ERROR).entity(e.getMessage()).build(); } } else { response = Response.status(Status.FORBIDDEN).entity(content) .type(MediaType.APPLICATION_JSON).build(); } LoggingUtil.logRestRequest(logger, auditLogger, req, response); return response; } /** * Retrieves the properties defined in the edge rules for a relationship between the * supplied vertex types. * * @param sourceVertexType - Type of source vertex for the relationship. * @param targetVertexType - Type of target vertex for the relationship. * * @return - The defined properties for the relationship type. * * @throws CrudException */ private Map getEdgeRuleProperties(String sourceVertexType, String targetVertexType) throws CrudException { if(logger.isDebugEnabled()) { logger.debug("Lookup db edge rules for " + sourceVertexType + " -> " + targetVertexType); } EdgeRules rules = EdgeRules.getInstance(); EdgeRule rule; try { if(logger.isDebugEnabled()) { logger.debug("Lookup by edge type TREE"); } // We have no way of knowing in advance whether our relationship is considered to // be a tree or cousing relationship, so try looking it up as a tree type first. rule = rules.getEdgeRule(EdgeType.TREE, sourceVertexType, targetVertexType); } catch (AAIException e) { try { if(logger.isDebugEnabled()) { logger.debug("Lookup by edge type COUSIN"); } // If we are here, then our lookup by 'tree' type failed, so try looking it up // as a 'cousin' relationship. rule = rules.getEdgeRule(EdgeType.COUSIN, sourceVertexType, targetVertexType); } catch (AAIException e1) { // If we're here then we failed to find edge rules for this relationship. Time to // give up... throw new CrudException("No edge rules for " + sourceVertexType + " -> " + targetVertexType, Status.NOT_FOUND); } } catch (Exception e) { throw new CrudException("General failure getting edge rule properties - " + e.getMessage(), Status.INTERNAL_SERVER_ERROR); } return rule.getEdgeProperties(); } /** * This method takes an inbound edge request payload, looks up the edge rules for the * sort of relationship defined in the payload, and automatically applies the defined * edge properties to it. * * @param payload - The original edge request payload * * @return - An updated edge request payload, with the properties defined in the edge * rules automatically populated. * * @throws CrudException */ public EdgePayload applyEdgeRulesToPayload(EdgePayload payload) throws CrudException { // Extract the types for both the source and target vertices. String srcType = RelationshipSchemaValidator.vertexTypeFromUri(payload.getSource()); String tgtType = RelationshipSchemaValidator.vertexTypeFromUri(payload.getTarget()); // Now, get the default properties for this edge based on the edge rules definition... Map props = getEdgeRuleProperties(srcType, tgtType); // ...and merge them with any custom properties provided in the request. JsonElement mergedProperties = mergeProperties(payload.getProperties(), props); payload.setProperties(mergedProperties); if(logger.isDebugEnabled()) { logger.debug("Edge properties after applying rules for '" + srcType + " -> " + tgtType + "': " + mergedProperties); } return payload; } /** * Given a set of edge properties extracted from an edge request payload and a set of properties * taken from the db edge rules, this method merges them into one set of properties. *

    * If the client has attempted to override the defined value for a property in the db edge rules * then the request will be rejected as invalid. * * @param propertiesFromRequest - Set of properties from the edge request. * @param propertyDefaults - Set of properties from the db edge rules. * * @return - A merged set of properties. * * @throws CrudException */ public JsonElement mergeProperties(JsonElement propertiesFromRequest, Map propertyDefaults) throws CrudException { // Convert the properties from the edge payload into something we can // manipulate. Set> properties = new HashSet>(); properties.addAll(propertiesFromRequest.getAsJsonObject().entrySet()); Set propertyKeys = new HashSet(); for(Map.Entry property : properties) { propertyKeys.add(property.getKey()); } // Now, merge in the properties specified in the Db Edge Rules. for(EdgeProperty defProperty : propertyDefaults.keySet()) { // If the edge rules property was explicitly specified by the // client then we will reject the request... if(!propertyKeys.contains(defProperty.toString())) { properties.add(new AbstractMap.SimpleEntry(defProperty.toString(), (JsonElement)(new JsonPrimitive(propertyDefaults.get(defProperty))))); } else { throw new CrudException("Property " + defProperty + " defined in db edge rules can not be overriden by the client.", Status.BAD_REQUEST); } } Object[] propArray = properties.toArray(); StringBuilder sb = new StringBuilder(); sb.append("{"); boolean first=true; for(int i=0; i entry = (Entry) propArray[i]; if(!first) { sb.append(","); } sb.append("\"").append(entry.getKey()).append("\"").append(":").append(entry.getValue()); first=false; } sb.append("}"); // We're done. Return the result as a JsonElement. return gson.fromJson(sb.toString(), JsonElement.class); } /** * Invokes authentication validation on an incoming HTTP request. * * @param req - The HTTP request. * @param uri - HTTP URI * @param content - Payload of the HTTP request. * @param action - What HTTP action is being performed (GET/PUT/POST/PATCH/DELETE) * @param authPolicyFunctionName - Policy function being invoked. * * @return true - if the request passes validation, * false - otherwise. */ protected boolean validateRequest(HttpServletRequest req, String uri, String content, Action action, String authPolicyFunctionName) { try { String cipherSuite = (String) req.getAttribute("javax.servlet.request.cipher_suite"); String authUser = null; if (cipherSuite != null) { X509Certificate[] certChain = (X509Certificate[]) req.getAttribute("javax.servlet.request.X509Certificate"); X509Certificate clientCert = certChain[0]; X500Principal subjectDn = clientCert.getSubjectX500Principal(); authUser = subjectDn.toString(); } return this.auth.validateRequest(authUser.toLowerCase(), action.toString() + ":" + authPolicyFunctionName); } catch (Exception e) { logResult(action, uri, e); return false; } } protected void logResult(Action op, String uri, Exception e) { logger.error(CrudServiceMsgs.EXCEPTION_DURING_METHOD_CALL, op.toString(), uri, e.getStackTrace().toString()); // Clear the MDC context so that no other transaction inadvertently // uses our transaction id. MDC.clear(); } }