diff options
Diffstat (limited to 'src/main/java/org/onap/dcae/restapi/VesRestController.java')
| -rw-r--r-- | src/main/java/org/onap/dcae/restapi/VesRestController.java | 214 |
1 files changed, 214 insertions, 0 deletions
diff --git a/src/main/java/org/onap/dcae/restapi/VesRestController.java b/src/main/java/org/onap/dcae/restapi/VesRestController.java new file mode 100644 index 00000000..b7fc5f3b --- /dev/null +++ b/src/main/java/org/onap/dcae/restapi/VesRestController.java @@ -0,0 +1,214 @@ +/* + * ============LICENSE_START======================================================= + * PROJECT + * ================================================================================ + * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved. + * Copyright (C) 2018 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.Optional.ofNullable; +import static java.util.stream.StreamSupport.stream; +import static org.springframework.http.ResponseEntity.accepted; +import static org.springframework.http.ResponseEntity.ok; + +import com.att.nsa.clock.SaClock; +import com.att.nsa.logging.LoggingContext; +import com.att.nsa.logging.log4j.EcompFields; +import com.github.fge.jackson.JsonLoader; +import com.github.fge.jsonschema.core.report.ProcessingReport; +import com.github.fge.jsonschema.main.JsonSchema; + +import java.util.UUID; +import java.util.concurrent.LinkedBlockingQueue; +import javax.servlet.http.HttpServletRequest; + +import org.json.JSONArray; +import org.json.JSONObject; +import org.onap.dcae.ApplicationSettings; +import org.onap.dcae.CollectorSchemas; +import org.onap.dcae.commonFunction.VESLogger; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; +import org.springframework.beans.factory.annotation.Autowired; +import org.springframework.beans.factory.annotation.Qualifier; +import org.springframework.http.MediaType; +import org.springframework.http.ResponseEntity; +import org.springframework.web.bind.annotation.GetMapping; +import org.springframework.web.bind.annotation.PostMapping; +import org.springframework.web.bind.annotation.RequestBody; +import org.springframework.web.bind.annotation.RestController; + +@RestController +public class VesRestController { + + private static final Logger LOG = LoggerFactory.getLogger(VesRestController.class); + + private static final String FALLBACK_VES_VERSION = "v5"; + + @Autowired + private ApplicationSettings collectorProperties; + + @Autowired + private CollectorSchemas schemas; + + @Autowired + @Qualifier("metriclog") + private Logger metriclog; + + @Autowired + @Qualifier("incomingRequestsLogger") + private Logger incomingRequestsLogger; + + @Autowired + @Qualifier("errorLog") + private Logger errorLog; + + private LinkedBlockingQueue<JSONObject> inputQueue; + private String version; + + @Autowired + VesRestController(@Qualifier("incomingRequestsLogger") Logger incomingRequestsLogger, + @Qualifier("inputQueue") LinkedBlockingQueue<JSONObject> inputQueue) { + this.incomingRequestsLogger = incomingRequestsLogger; + this.inputQueue = inputQueue; + } + + @GetMapping("/") + String mainPage() { + return "Welcome to VESCollector"; + } + + //refactor in next iteration + @PostMapping(value = {"/eventListener/v1", + "/eventListener/v1/eventBatch", + "/eventListener/v2", + "/eventListener/v2/eventBatch", + "/eventListener/v3", + "/eventListener/v3/eventBatch", + "/eventListener/v4", + "/eventListener/v4/eventBatch", + "/eventListener/v5", + "/eventListener/v5/eventBatch"}, consumes = "application/json") + ResponseEntity<String> receiveEvent(@RequestBody String jsonPayload, HttpServletRequest httpServletRequest) { + String request = httpServletRequest.getRequestURI(); + extractVersion(request); + + JSONObject jsonObject; + try { + jsonObject = new JSONObject(jsonPayload); + } catch (Exception e) { + return ResponseEntity.badRequest().body(ApiException.INVALID_JSON_INPUT.toJSON().toString()); + } + + String uuid = setUpECOMPLoggingForRequest(); + incomingRequestsLogger.info(String.format( + "Received a VESEvent '%s', marked with unique identifier '%s', on api version '%s', from host: '%s'", + jsonObject, uuid, version, httpServletRequest.getRemoteHost())); + + if (collectorProperties.jsonSchemaValidationEnabled()) { + if (isBatchRequest(request) && (jsonObject.has("eventList") && (!jsonObject.has("event")))) { + if (!conformsToSchema(jsonObject, version)) { + return errorResponse(ApiException.SCHEMA_VALIDATION_FAILED); + } + } else if (!isBatchRequest(request) && (!jsonObject.has("eventList") && (jsonObject.has("event")))) { + if (!conformsToSchema(jsonObject, version)) { + return errorResponse(ApiException.SCHEMA_VALIDATION_FAILED); + } + } else { + return errorResponse(ApiException.INVALID_JSON_INPUT); + } + } + + JSONArray commonlyFormatted = convertToJSONArrayCommonFormat(jsonObject, request, uuid, version); + + if (!putEventsOnProcessingQueue(commonlyFormatted)) { + errorLog.error("EVENT_RECEIPT_FAILURE: QueueFull " + ApiException.NO_SERVER_RESOURCES); + return errorResponse(ApiException.NO_SERVER_RESOURCES); + } + return ok().contentType(MediaType.APPLICATION_JSON).body("Message Accepted"); + } + + private void extractVersion(String httpServletRequest) { + version = httpServletRequest.split("/")[2]; + } + + private ResponseEntity<String> errorResponse(ApiException noServerResources) { + return ResponseEntity.status(noServerResources.httpStatusCode) + .body(noServerResources.toJSON().toString()); + } + + private boolean putEventsOnProcessingQueue(JSONArray arrayOfEvents) { + for (int i = 0; i < arrayOfEvents.length(); i++) { + metriclog.info("EVENT_PUBLISH_START"); + if (!inputQueue.offer((JSONObject) arrayOfEvents.get(i))) { + return false; + } + } + LOG.debug("CommonStartup.handleEvents:EVENTS has been published successfully!"); + metriclog.info("EVENT_PUBLISH_END"); + return true; + } + + private boolean conformsToSchema(JSONObject payload, String version) { + try { + JsonSchema schema = ofNullable(schemas.getJSONSchemasMap(version).get(version)) + .orElse(schemas.getJSONSchemasMap(version).get(FALLBACK_VES_VERSION)); + ProcessingReport report = schema.validate(JsonLoader.fromString(payload.toString())); + if (!report.isSuccess()) { + LOG.warn("Schema validation failed for event: " + payload); + stream(report.spliterator(), false).forEach(e -> LOG.warn(e.getMessage())); + return false; + } + return report.isSuccess(); + } catch (Exception e) { + throw new RuntimeException("Unable to validate against schema", e); + } + } + + private static JSONArray convertToJSONArrayCommonFormat(JSONObject jsonObject, String request, + String uuid, String version) { + JSONArray asArrayEvents = new JSONArray(); + String vesUniqueIdKey = "VESuniqueId"; + String vesVersionKey = "VESversion"; + if (isBatchRequest(request)) { + JSONArray events = jsonObject.getJSONArray("eventList"); + for (int i = 0; i < events.length(); i++) { + JSONObject event = new JSONObject().put("event", events.getJSONObject(i)); + event.put(vesUniqueIdKey, uuid + "-" + i); + event.put(vesVersionKey, version); + asArrayEvents.put(event); + } + } else { + jsonObject.put(vesUniqueIdKey, uuid); + jsonObject.put(vesVersionKey, version); + asArrayEvents = new JSONArray().put(jsonObject); + } + return asArrayEvents; + } + + private static String setUpECOMPLoggingForRequest() { + final UUID uuid = UUID.randomUUID(); + LoggingContext localLC = VESLogger.getLoggingContextForThread(uuid); + localLC.put(EcompFields.kBeginTimestampMs, SaClock.now()); + return uuid.toString(); + } + + private static boolean isBatchRequest(String request) { + return request.contains("eventBatch"); + } +}
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