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/*-
* ============LICENSE_START=======================================================
* SDC
* ================================================================================
* Copyright (C) 2017 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.openecomp.sdc.be.servlets;
import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import com.jcabi.aspects.Loggable;
import fj.data.Either;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import io.swagger.annotations.ApiResponse;
import io.swagger.annotations.ApiResponses;
import org.apache.commons.lang3.tuple.Pair;
import org.openecomp.sdc.be.components.health.HealthCheckBusinessLogic;
import org.openecomp.sdc.be.components.impl.MonitoringBusinessLogic;
import org.openecomp.sdc.be.config.BeEcompErrorManager;
import org.openecomp.sdc.be.dao.api.ActionStatus;
import org.openecomp.sdc.be.impl.WebAppContextWrapper;
import org.openecomp.sdc.common.api.Constants;
import org.openecomp.sdc.common.api.HealthCheckInfo;
import org.openecomp.sdc.common.api.HealthCheckWrapper;
import org.openecomp.sdc.common.config.EcompErrorName;
import org.openecomp.sdc.common.monitoring.MonitoringEvent;
import org.openecomp.sdc.exception.ResponseFormat;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.web.context.WebApplicationContext;
import javax.inject.Singleton;
import javax.servlet.ServletContext;
import javax.servlet.http.HttpServletRequest;
import javax.ws.rs.*;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;
import java.util.List;
@Loggable(prepend = true, value = Loggable.TRACE, trim = false)
@Path("/")
@Api(value = "BE Monitoring", description = "BE Monitoring")
@Singleton
public class BeMonitoringServlet extends BeGenericServlet {
Gson prettyGson = new GsonBuilder().setPrettyPrinting().create();
private static final Logger log = LoggerFactory.getLogger(ConfigServlet.class);
@GET
@Path("/healthCheck")
@Consumes(MediaType.APPLICATION_JSON)
@Produces(MediaType.APPLICATION_JSON)
@ApiOperation(value = "Return aggregate BE health check of SDC BE components", notes = "return BE health check", response = String.class)
@ApiResponses(value = { @ApiResponse(code = 200, message = "SDC BE components are all up"), @ApiResponse(code = 500, message = "One or more SDC BE components are down") })
public Response getHealthCheck(@Context final HttpServletRequest request) {
try {
HealthCheckBusinessLogic healthCheckBusinessLogic = getHealthCheckBL(request.getSession().getServletContext());
Pair<Boolean, List<HealthCheckInfo>> beHealthCheckInfosStatus = healthCheckBusinessLogic.getBeHealthCheckInfosStatus();
Boolean aggregateStatus = beHealthCheckInfosStatus.getLeft();
ActionStatus status = aggregateStatus ? ActionStatus.OK : ActionStatus.GENERAL_ERROR;
String sdcVersion = getVersionFromContext(request);
if (sdcVersion == null || sdcVersion.isEmpty()) {
sdcVersion = "UNKNOWN";
}
String siteMode = healthCheckBusinessLogic.getSiteMode();
HealthCheckWrapper healthCheck = new HealthCheckWrapper(beHealthCheckInfosStatus.getRight(), sdcVersion, siteMode);
// The response can be either with 200 or 500 aggregate status - the
// body of individual statuses is returned either way
String healthCheckStr = prettyGson.toJson(healthCheck);
return buildOkResponse(getComponentsUtils().getResponseFormat(status), healthCheckStr);
} catch (Exception e) {
BeEcompErrorManager.getInstance().logBeHealthCheckError("BeHealthCheck");
log.debug("BE health check unexpected exception", e);
return buildErrorResponse(getComponentsUtils().getResponseFormat(ActionStatus.GENERAL_ERROR));
}
}
@POST
@Path("/monitoring")
@Consumes(MediaType.APPLICATION_JSON)
@Produces(MediaType.APPLICATION_JSON)
public Response processMonitoringMetrics(@Context final HttpServletRequest request, String json) {
try {
MonitoringEvent monitoringEvent = convertContentToJson(json, MonitoringEvent.class);
if (monitoringEvent == null) {
return buildErrorResponse(getComponentsUtils().getResponseFormatAdditionalProperty(ActionStatus.GENERAL_ERROR));
}
log.trace("Received monitoring metrics: {}", monitoringEvent);
ServletContext context = request.getSession().getServletContext();
MonitoringBusinessLogic bl = getMonitoringBL(context);
Either<Boolean, ResponseFormat> result = bl.logMonitoringEvent(monitoringEvent);
if (result.isRight()) {
return buildErrorResponse(result.right().value());
}
return buildOkResponse(getComponentsUtils().getResponseFormat(ActionStatus.OK), null);
} catch (Exception e) {
log.debug("BE system metrics unexpected exception", e);
return buildErrorResponse(getComponentsUtils().getResponseFormatAdditionalProperty(ActionStatus.GENERAL_ERROR));
}
}
@GET
@Path("/version")
@Consumes(MediaType.APPLICATION_JSON)
@Produces(MediaType.APPLICATION_JSON)
@ApiOperation(value = "return the ASDC application version", notes = "return the ASDC application version", response = String.class)
@ApiResponses(value = { @ApiResponse(code = 200, message = "return ASDC version"), @ApiResponse(code = 500, message = "Internal Error") })
public Response getSdcVersion(@Context final HttpServletRequest request) {
try {
String url = request.getMethod() + " " + request.getRequestURI();
log.debug("Start handle request of {}", url);
String version = getVersionFromContext(request);
log.debug("asdc version from manifest is: {}", version);
if (version == null || version.isEmpty()) {
return buildErrorResponse(getComponentsUtils().getResponseFormat(ActionStatus.ASDC_VERSION_NOT_FOUND));
}
HealthCheckInfo versionInfo = new HealthCheckInfo();
versionInfo.setVersion(version);
// The response can be either with 200 or 500 aggregate status - the
// body of individual statuses is returned either way
return buildOkResponse(getComponentsUtils().getResponseFormat(ActionStatus.OK), versionInfo);
} catch (Exception e) {
BeEcompErrorManager.getInstance().logBeRestApiGeneralError("getSDCVersion");
log.debug("BE get ASDC version unexpected exception", e);
return buildErrorResponse(getComponentsUtils().getResponseFormat(ActionStatus.GENERAL_ERROR));
}
}
private String getVersionFromContext(HttpServletRequest request) {
ServletContext servletContext = request.getSession().getServletContext();
String version = (String) servletContext.getAttribute(Constants.ASDC_RELEASE_VERSION_ATTR);
return version;
}
protected MonitoringEvent convertContentToJson(String content, Class<MonitoringEvent> clazz) {
MonitoringEvent object = null;
try {
object = gson.fromJson(content, clazz);
object.setFields(null);
} catch (Exception e) {
log.debug("Failed to convert the content {} to object.", content.substring(0, Math.min(50, content.length())), e);
}
return object;
}
private HealthCheckBusinessLogic getHealthCheckBL(ServletContext context) {
WebAppContextWrapper webApplicationContextWrapper = (WebAppContextWrapper) context.getAttribute(Constants.WEB_APPLICATION_CONTEXT_WRAPPER_ATTR);
WebApplicationContext webApplicationContext = webApplicationContextWrapper.getWebAppContext(context);
HealthCheckBusinessLogic healthCheckBl = webApplicationContext.getBean(HealthCheckBusinessLogic.class);
return healthCheckBl;
}
}
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