path: root/appc-adapters/appc-rest-healthcheck-adapter/appc-rest-healthcheck-adapter-bundle/src/main/java/org/openecomp/appc/adapter/restHealthcheck/impl/RestHealthcheckAdapterImpl.java

/*-
 * ============LICENSE_START=======================================================
 * openECOMP : APP-C
 * ================================================================================
 * 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.appc.adapter.restHealthcheck.impl;

import java.net.URI;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Properties;
import java.util.Set;
import java.util.regex.Pattern;

import org.openecomp.appc.Constants;
import org.openecomp.appc.adapter.restHealthcheck.RestHealthcheckAdapter;
import org.openecomp.appc.configuration.Configuration;
import org.openecomp.appc.configuration.ConfigurationFactory;
import org.openecomp.appc.exceptions.APPCException;
import org.openecomp.appc.exceptions.UnknownProviderException;
import org.openecomp.appc.i18n.Msg;
import org.openecomp.appc.pool.Pool;
import org.openecomp.appc.pool.PoolExtensionException;
import org.openecomp.appc.util.StructuredPropertyHelper;
import org.openecomp.appc.util.StructuredPropertyHelper.Node;


import com.att.cdp.exceptions.ContextConnectionException;
import com.att.cdp.exceptions.ResourceNotFoundException;
import com.att.cdp.exceptions.TimeoutException;
import com.att.cdp.exceptions.ZoneException;
import com.att.cdp.pal.util.StringHelper;
import com.att.cdp.zones.ComputeService;
import com.att.cdp.zones.Context;
import com.att.cdp.zones.ImageService;
import com.att.cdp.zones.Provider;
import com.att.cdp.zones.model.Image;
import com.att.cdp.zones.model.Server;
import com.att.cdp.zones.model.Server.Status;
import com.att.cdp.zones.model.ServerBootSource;
import com.att.eelf.configuration.EELFLogger;
import com.att.eelf.configuration.EELFManager;
import com.att.eelf.i18n.EELFResourceManager;
import org.openecomp.sdnc.sli.SvcLogicContext;

import org.glassfish.grizzly.http.util.HttpStatus;
import org.slf4j.MDC;

import java.net.InetAddress;
import java.util.Locale;
import java.util.UUID;
import static com.att.eelf.configuration.Configuration.*;

import org.apache.http.*;
import org.apache.http.client.*;
import org.apache.http.client.methods.*;
import org.apache.http.impl.client.*;
import org.apache.http.util.EntityUtils;
import java.io.IOException;
import org.apache.http.entity.StringEntity;
import java.net.InetAddress;

public class RestHealthcheckAdapterImpl implements RestHealthcheckAdapter {

	/**
	 * The constant used to define the adapter name in the mapped diagnostic
	 * context
	 */


	@SuppressWarnings("nls")
	public static final String MDC_ADAPTER = "adapter";

	/**
	 * The constant used to define the service name in the mapped diagnostic
	 * context
	 */
	@SuppressWarnings("nls")
	public static final String MDC_SERVICE = "service";

	/**
	 * The constant for the status code for a failed outcome
	 */
	@SuppressWarnings("nls")
	public static final String OUTCOME_FAILURE = "failure";

	/**
	 * The constant for the status code for a successful outcome
	 */
	@SuppressWarnings("nls")
	public static final String OUTCOME_SUCCESS = "success";

	/**
	 * A constant for the property token "provider" used in the structured
	 * property specifications
	 */
	@SuppressWarnings("nls")
	public static final String PROPERTY_PROVIDER = "provider";

	/**
	 * A constant for the property token "identity" used in the structured
	 * property specifications
	 */
	@SuppressWarnings("nls")
	public static final String PROPERTY_PROVIDER_IDENTITY = "identity";

	/**
	 * A constant for the property token "name" used in the structured property
	 * specifications
	 */
	@SuppressWarnings("nls")
	public static final String PROPERTY_PROVIDER_NAME = "name";

	/**
	 * A constant for the property token "tenant" used in the structured
	 * property specifications
	 */
	@SuppressWarnings("nls")
	public static final String PROPERTY_PROVIDER_TENANT = "tenant";

	/**
	 * A constant for the property token "tenant name" used in the structured
	 * property specifications
	 */
	@SuppressWarnings("nls")
	public static final String PROPERTY_PROVIDER_TENANT_NAME = "name";

	/**
	 * A constant for the property token "password" used in the structured
	 * property specifications
	 */
	@SuppressWarnings("nls")
	public static final String PROPERTY_PROVIDER_TENANT_PASSWORD = "password"; // NOSONAR

	/**
	 * A constant for the property token "userid" used in the structured
	 * property specifications
	 */
	@SuppressWarnings("nls")
	public static final String PROPERTY_PROVIDER_TENANT_USERID = "userid";

	/**
	 * A constant for the property token "type" used in the structured property
	 * specifications
	 */
	@SuppressWarnings("nls")
	public static final String PROPERTY_PROVIDER_TYPE = "type";


	@SuppressWarnings("nls")
	public static final String PING_SERVICE = "pingServer";

	/**
	 * The logger to be used
	 */
	private static final EELFLogger logger = EELFManager.getInstance().getLogger(RestHealthcheckAdapterImpl.class);

	/**
	 * The constant for a left parenthesis
	 */
	private static final char LPAREN = '(';

	/**
	 * The constant for a new line control code
	 */
	private static final char NL = '\n';

	/**
	 * The constant for a single quote
	 */
	private static final char QUOTE = '\'';

	/**
	 * The constant for a right parenthesis
	 */
	private static final char RPAREN = ')';

	/**
	 * The constant for a space
	 */
	private static final char SPACE = ' ';

	/**
	 * A reference to the adapter configuration object.
	 */
	private Configuration configuration;

	/**
	 * A cache of providers that are predefined.
	 */
	// private Map<String /* provider name */, ProviderCache> providerCache;

	/**
	 * This default constructor is used as a work around because the activator
	 * wasnt getting called
	 */
	/**
	 * A cache of providers that are predefined.
	 */
	// private Map<String /* provider name */, ProviderCache> providerCache;

	/**
	 * This default constructor is used as a work around because the activator
	 * wasnt getting called
	 */
	public RestHealthcheckAdapterImpl() {
		initialize();

	}


	public RestHealthcheckAdapterImpl(boolean initialize) {

		if (initialize) {
			initialize();

		}
	}


	public RestHealthcheckAdapterImpl(Properties props) {
		initialize();

	}


	@Override
	public String getAdapterName() {
		return configuration.getProperty(Constants.PROPERTY_ADAPTER_NAME);
	}

	public void checkHealth(Map<String, String> params, SvcLogicContext ctx) {
		logger.info("VNF rest health check");
		String uri=params.get("VNF.URI");
		String endPoint=params.get("VNF.endpoint");
		String tUrl=uri+"/"+endPoint;
		RequestContext rc = new RequestContext(ctx);
		rc.isAlive();

		try {
			HttpGet httpGet = new HttpGet(tUrl);
			HttpClient httpClient = HttpClients.createDefault();
			HttpResponse response = null;
			response = httpClient.execute(httpGet);
			int responseCode=response.getStatusLine().getStatusCode();
			HttpEntity entity = response.getEntity();
			String responseOutput=EntityUtils.toString(entity);
			if(responseCode==200)
			{
				doSuccess(rc,responseCode,responseOutput);
			}
			else
			{
				doHealthCheckFailure(rc,responseCode,responseOutput);
			}
		} catch (Exception ex) {
			doFailure(rc, HttpStatus.INTERNAL_SERVER_ERROR_500, ex.toString());
		}
	}




	@SuppressWarnings("static-method")
	private void doFailure(RequestContext rc, HttpStatus code, String message) {
		SvcLogicContext svcLogic = rc.getSvcLogicContext();
		String msg = (message == null) ? code.getReasonPhrase() : message;
		if (msg.contains("\n")) {
			msg = msg.substring(msg.indexOf("\n"));
		}

		String status;
		try {
			status = Integer.toString(code.getStatusCode());
		} catch (Exception e) {
			status = "500";
		}
		svcLogic.setStatus(OUTCOME_FAILURE);
		svcLogic.setAttribute("healthcheck.result.code", "200");
		svcLogic.setAttribute("healthcheck.result.message", status+" "+msg);
	}


	/**
	 * @param rc
	 *            The request context that manages the state and recovery of the
	 *            request for the life of its processing.
	 */
	@SuppressWarnings("static-method")
	private void doHealthCheckFailure(RequestContext rc, int code, String message) {
		SvcLogicContext svcLogic = rc.getSvcLogicContext();
		String msg = Integer.toString(code)+" "+message;
		svcLogic.setAttribute("healthcheck.result.code", "200");
		svcLogic.setAttribute("healthcheck.result.message", msg);

	}


	@SuppressWarnings("static-method")
	private void doSuccess(RequestContext rc, int code, String message) {
		SvcLogicContext svcLogic = rc.getSvcLogicContext();
		String msg = Integer.toString(code)+" "+message;
		svcLogic.setAttribute("healthcheck.result.code", "400");
		svcLogic.setAttribute("healthcheck.result.message", msg);

	}


	/**
	 * initialize the provider adapter by building the context cache
	 */
	private void initialize() {


		logger.info("init rest health check adapter!!!!!");
	}

}