diff options
Diffstat (limited to 'src/main/java/org/onap/dcae/restapi/EventValidator.java')
-rw-r--r-- | src/main/java/org/onap/dcae/restapi/EventValidator.java | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/src/main/java/org/onap/dcae/restapi/EventValidator.java b/src/main/java/org/onap/dcae/restapi/EventValidator.java new file mode 100644 index 00000000..f119b507 --- /dev/null +++ b/src/main/java/org/onap/dcae/restapi/EventValidator.java @@ -0,0 +1,78 @@ +/* + * ============LICENSE_START======================================================= + * PROJECT + * ================================================================================ + * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved. + * Copyright (C) 2019 Nokia. All rights reserved.s + * ================================================================================ + * 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.dcae.restapi; + +import static java.util.stream.StreamSupport.stream; + +import com.github.fge.jackson.JsonLoader; +import com.github.fge.jsonschema.core.report.ProcessingReport; +import com.github.fge.jsonschema.main.JsonSchema; +import java.util.Optional; +import org.json.JSONObject; +import org.onap.dcae.ApplicationException; +import org.onap.dcae.ApplicationSettings; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; +import org.springframework.http.ResponseEntity; + +public class EventValidator { + + private static final Logger log = LoggerFactory.getLogger(EventValidator.class); + + private ApplicationSettings applicationSettings; + + public EventValidator(ApplicationSettings applicationSettings) { + this.applicationSettings = applicationSettings; + } + + public Optional<ResponseEntity<String>> validate(JSONObject jsonObject, String type, String version){ + if (applicationSettings.jsonSchemaValidationEnabled()) { + if (jsonObject.has(type)) { + if (!conformsToSchema(jsonObject, version)) { + return errorResponse(ApiException.SCHEMA_VALIDATION_FAILED); + } + } else { + return errorResponse(ApiException.INVALID_JSON_INPUT); + } + } + return Optional.empty(); + } + + private boolean conformsToSchema(JSONObject payload, String version) { + try { + JsonSchema schema = applicationSettings.jsonSchema(version); + ProcessingReport report = schema.validate(JsonLoader.fromString(payload.toString())); + if (report.isSuccess()) { + return true; + } + log.warn("Schema validation failed for event: " + payload); + stream(report.spliterator(), false).forEach(e -> log.warn(e.getMessage())); + return false; + } catch (Exception e) { + throw new ApplicationException("Unable to validate against schema", e); + } + } + + private Optional<ResponseEntity<String>> errorResponse(ApiException noServerResources) { + return Optional.of(ResponseEntity.status(noServerResources.httpStatusCode) + .body(noServerResources.toJSON().toString())); + } +} |