+++ /dev/null
-/**
- * ============LICENSE_START=======================================================
- * org.onap.aai
- * ================================================================================
- * Copyright © 2017-2018 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.onap.aai.config;
-
-import com.att.eelf.configuration.EELFLogger;
-import com.att.eelf.configuration.EELFManager;
-import com.netflix.client.config.DefaultClientConfigImpl;
-import com.netflix.client.config.IClientConfig;
-import com.netflix.loadbalancer.IPing;
-import com.netflix.loadbalancer.Server;
-import org.springframework.http.*;
-import org.springframework.web.client.HttpClientErrorException;
-import org.springframework.web.client.RestTemplate;
-
-import java.io.IOException;
-import java.net.InetSocketAddress;
-import java.net.Socket;
-import java.net.SocketAddress;
-import java.util.Base64;
-import java.util.Collections;
-import java.util.Map;
-import java.util.Optional;
-
-public class HttpPingImpl implements HttpPing, IPing {
-
- private static final EELFLogger logger = EELFManager.getInstance().getLogger(HttpPingImpl.class);
-
- private static final Base64.Encoder base64Encoder = Base64.getEncoder();
-
- private static final HttpHeaders HTTP_HEADERS = new HttpHeaders();
-
- // This is a workaround for the topics that the user
- // does not have the access to read their own topic status
- private static final String MR_STATUS_PATTERN = ".*\"mrstatus\":\\s*4002.*";
-
- private static final int HTTPS_PORT = 3905;
- private static final int DEFAULT_TIMEOUT = 2;
-
- private String healthCheckEndpoint;
- private String username;
- private String password;
-
- private int timeout;
-
- private final RestTemplate restTemplate;
-
- public HttpPingImpl(String healthCheckEndpoint) {
- this(new RestTemplate());
- this.healthCheckEndpoint = healthCheckEndpoint;
- this.timeout = DEFAULT_TIMEOUT;
- }
-
- public HttpPingImpl(RestTemplate restTemplate) {
- this.restTemplate = restTemplate;
- this.healthCheckEndpoint = "";
- this.timeout = DEFAULT_TIMEOUT;
- }
-
- public HttpPingImpl() {
- this("");
- }
-
- public HttpPingImpl(IClientConfig clientConfig) {
-
- if (!(clientConfig instanceof DefaultClientConfigImpl)) {
- throw new UnsupportedOperationException("Unable to support the client config implementation: " + clientConfig.getClass().getName());
- }
-
- DefaultClientConfigImpl defaultClientConfig = (DefaultClientConfigImpl) clientConfig;
-
- Map<String, Object> map = defaultClientConfig.getProperties();
-
- this.setCredentials(map.get("username").toString(), map.get("password").toString());
- this.setHealthCheckEndpoint(map.get("health.endpoint").toString());
- this.setTimeoutInSecs(Integer.valueOf(map.get("pingport.timeout").toString()));
-
- this.restTemplate = new RestTemplate();
- }
-
- /**
- * {@inheritDoc}
- */
- @Override
- public void setHealthCheckEndpoint(String endpoint) {
- this.healthCheckEndpoint = endpoint;
- }
-
- /**
- * {@inheritDoc}
- */
- @Override
- public String getHealthCheckEndpoint() {
- return healthCheckEndpoint;
- }
-
- @Override
- public void setCredentials(String username, String password) {
- this.username = username;
- this.password = password;
- }
-
- public void setTimeoutInSecs(int timeout) {
- this.timeout = timeout;
- }
-
- @Override
- public Optional<String> getAuthorization() {
-
- if (username == null && password == null) {
- return Optional.empty();
- }
-
- if (username == null || username.isEmpty()) {
- logger.error("Username is null while the password is not correctly set");
- return Optional.empty();
- }
-
- if (password == null || password.isEmpty()) {
- logger.error("Password is null while the username is not correctly set");
- return Optional.empty();
- }
-
- String auth = String.format("%s:%s", username, password);
- return Optional.ofNullable("Basic " + base64Encoder.encodeToString(auth.getBytes()));
- }
-
- /**
- * @{inheritDoc}
- */
- @Override
- public boolean isAlive(Server server) {
-
- String url = null;
-
- // If unable to ping the port then return immediately
- if (!pingPort(server)) {
- return false;
- }
-
- if (server.getPort() == HTTPS_PORT) {
- url = "https://";
- } else {
-
- url = "http://";
- }
-
- url = url + server.getId();
- url = url + this.getHealthCheckEndpoint();
-
- boolean isAlive = false;
-
- Optional<String> authorization = getAuthorization();
-
- HttpHeaders httpHeaders = new HttpHeaders();
- httpHeaders.setAccept(Collections.singletonList(MediaType.APPLICATION_JSON));
-
- if (authorization.isPresent()) {
- httpHeaders.add("Authorization", authorization.get());
- }
-
- HttpEntity<String> httpEntity = new HttpEntity<>(httpHeaders);
- try {
-
- ResponseEntity<String> responseEntity = restTemplate.exchange(url, HttpMethod.GET, httpEntity, String.class);
-
- HttpStatus httpStatus = responseEntity.getStatusCode();
-
- if (httpStatus == HttpStatus.OK) {
- isAlive = true;
- logger.info("Successfully established connection to the following url {}", url);
- return isAlive;
- }
-
- logger.warn("Unable to establish a connection the following url {} due to HTTP Code {}, and reason {}",
- url, httpStatus.value(), httpStatus.getReasonPhrase());
-
- } catch (HttpClientErrorException ex) {
- HttpStatus httpStatus = ex.getStatusCode();
- if (httpStatus == HttpStatus.FORBIDDEN) {
- // This is a workaround being in play for the topics
- // that are unable to read themselves for this user
- // In the case of the username and password being
- // wrong the response would be unauthorized (401) but if the
- // user is authorized but unable to read this topic, then
- // we get back the (403) with the message mrstatus 4002
- // This is a temporary workaround to properly identify which server is down
- String body = ex.getResponseBodyAsString();
- if (body.matches(MR_STATUS_PATTERN)) {
- isAlive = true;
- logger.info("Successfully connected by workaround due to unable to read own topic {}", url);
- return isAlive;
- } else {
- logger.warn("Unable to establish a connection to {} due to {}", server.getHostPort(), ex.getMessage());
- }
- } else {
- logger.warn("Unable to establish a connection to {} due to {}", server.getHostPort(), ex.getMessage());
- }
- } catch (Exception ex) {
- logger.warn("Unable to establish a connection to {} due to {}", server.getHostPort(), ex.getMessage());
- }
-
- return isAlive;
- }
-
- /**
- * Returns true if it can connect to the host and port within
- * the given timeout from the given server parameter
- *
- * @param server - server that will be taken from the src/main/resources/application.yml file
- * @return true if it can make a successful socket connection to the port on the host
- */
- public boolean pingPort(Server server) {
-
- String host = server.getHost();
- Integer port = server.getPort();
-
- boolean success = false;
- SocketAddress socketAddress = new InetSocketAddress(host, port);
-
- try (Socket socket = new Socket()) {
- socket.connect(socketAddress, timeout * 1000);
- if (socket.isConnected()) {
- success = true;
- }
- } catch (IOException e) {
- logger.warn("Unable to connect to the host {} on port {} due to {}", host, port, e.getLocalizedMessage());
- success = false;
- }
-
- return success;
- }
-}
Code Review / aai / aai-common.git / blobdiff