Remove the client load balancer use http client

Issue-ID: AAI-965
Change-Id: I68600c2a586faa5537ac58ca21b06e984413a8bc
Signed-off-by: Kajur, Harish (vk250x) <vk250x@att.com>

3 files changed, 0 insertions, 367 deletions

diff --git a/aai-client-loadbalancer/src/main/java/org/onap/aai/AAIRibbonConfiguration.java b/aai-client-loadbalancer/src/main/java/org/onap/aai/AAIRibbonConfiguration.java
deleted file mode 100644
index 601c8734..00000000
--- a/aai-client-loadbalancer/src/main/java/org/onap/aai/AAIRibbonConfiguration.java
+++ /dev/null
@@ -1,52 +0,0 @@
-/**
- * ============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;
-
-import com.netflix.client.config.IClientConfig;
-import com.netflix.loadbalancer.ILoadBalancer;
-import com.netflix.loadbalancer.LoadBalancerBuilder;
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.cloud.client.loadbalancer.LoadBalanced;
-import org.springframework.context.annotation.Bean;
-import org.springframework.web.client.RestTemplate;
-
-/**
- * AAIRibbonConfiguration is responsible for configuring the dmaap
- * and it reads the users the application properties class
- * and is mostly configurable via properties
- */
-public class AAIRibbonConfiguration {
-
-    @Autowired
-    IClientConfig ribbonClientConfig;
-
-    @Bean
-    public ILoadBalancer ribbonLoadBalancer() {
-        return LoadBalancerBuilder.newBuilder()
-                .withClientConfig(ribbonClientConfig)
-                .buildLoadBalancerFromConfigWithReflection();
-    }
-
-    @LoadBalanced
-    @Bean
-    public RestTemplate loadBalancedRestTemplate(){
-        return new RestTemplate();
-    }
-}
diff --git a/aai-client-loadbalancer/src/main/java/org/onap/aai/config/HttpPing.java b/aai-client-loadbalancer/src/main/java/org/onap/aai/config/HttpPing.java
deleted file mode 100644
index fcda0747..00000000
--- a/aai-client-loadbalancer/src/main/java/org/onap/aai/config/HttpPing.java
+++ /dev/null
@@ -1,66 +0,0 @@
-/**
- * ============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 java.util.Optional;
-
-/**
- * <b>HttpPing</b> interface provides access to update the endpoint and
- * and the security level of the server that the user is trying to access
- */
-public interface HttpPing {
-
-    /**
-     * Sets the endpoint that the http get request will
-     * make to verify if the url can be reached
-     *
-     * @param endpoint - the endpoint of the url that is used to do healthcheck
-     */
-    void setHealthCheckEndpoint(String endpoint);
-
-    /**
-     * Returns the health check endpoint that the implementation
-     * will use in order to verify if the server is reachable at that location
-     *
-     * @return endpoint - the endpoint of the url that is used to do healthcheck
-     */
-    String getHealthCheckEndpoint();
-
-    /**
-     * Set the credentials for the rest endpoint to verify authorization
-     *
-     * @param username - the username to the server trying to connect to
-     * @param password - the password to the server trying to connect to
-     */
-    void setCredentials(String username, String password);
-
-    /**
-     * Return the base64 authorization string set from the username and password
-     *
-     * @return encoded string using base64 of the username and password values
-     * like this:
-     * <pre>
-     * @{code
-     *      "username:password" => "Basic dXNlcm5hbWU6cGFzc3dvcmQ="
-     * }
-     * </pre>
-     */
-    Optional<String> getAuthorization();
-}
diff --git a/aai-client-loadbalancer/src/main/java/org/onap/aai/config/HttpPingImpl.java b/aai-client-loadbalancer/src/main/java/org/onap/aai/config/HttpPingImpl.java
deleted file mode 100644
index dd198016..00000000
--- a/aai-client-loadbalancer/src/main/java/org/onap/aai/config/HttpPingImpl.java
+++ /dev/null
@@ -1,249 +0,0 @@
-/**
- * ============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;
-    }
-}