--- /dev/null
+/**
+ * ============LICENSE_START=======================================================
+ * org.onap.aaf
+ * ================================================================================
+ * Copyright © 2018 European Software Marketing Ltd.
+ * ================================================================================
+ * 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.aaf.rproxy;
+
+import java.net.URI;
+import java.net.URISyntaxException;
+import java.util.Enumeration;
+import java.util.UUID;
+import javax.annotation.Resource;
+import javax.servlet.http.HttpServletRequest;
+import org.onap.aaf.fproxy.data.CredentialCacheData;
+import org.onap.aaf.fproxy.data.CredentialCacheData.CredentialType;
+import org.onap.aaf.rproxy.config.ForwardProxyProperties;
+import org.onap.aaf.rproxy.config.PrimaryServiceProperties;
+import org.onap.aaf.rproxy.logging.ReverseProxyMethodLogTimeAnnotation;
+import org.onap.aaf.rproxy.utils.ReverseProxyUtils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.boot.actuate.endpoint.InvalidEndpointRequestException;
+import org.springframework.boot.context.properties.EnableConfigurationProperties;
+import org.springframework.http.HttpEntity;
+import org.springframework.http.HttpHeaders;
+import org.springframework.http.HttpMethod;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestHeader;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+import org.springframework.web.client.RestTemplate;
+
+@RestController
+@EnableConfigurationProperties({ForwardProxyProperties.class, PrimaryServiceProperties.class})
+public class ReverseProxyService {
+
+ private static final Logger LOGGER = LoggerFactory.getLogger(ReverseProxyService.class);
+
+ private String validatedTransactionId;
+
+ @Resource(name = "ForwardProxyProperties")
+ private ForwardProxyProperties forwardProxyProperties;
+
+ @Resource(name = "PrimaryServiceProperties")
+ private PrimaryServiceProperties primaryServiceProperties;
+
+ @Autowired
+ private RestTemplate restTemplate;
+
+ @Value("${transactionid.header.name}")
+ private String transactionIdHeader;
+
+ @RequestMapping("/**")
+ @ReverseProxyMethodLogTimeAnnotation
+ public ResponseEntity<String> handleRequest(HttpServletRequest request,
+ @RequestHeader(value = "${transactionid.header.name}", defaultValue = "") String transactionId,
+ @RequestBody(required = false) String requestBody, HttpMethod requestMethod) throws URISyntaxException {
+ validatedTransactionId = getValidTransactionId(transactionId);
+
+ // Extract Request Permissions and store in Forward Proxy cache
+ CredentialCacheData credentialCacheData = getCredentialDataFromRequest(request);
+ if (credentialCacheData != null) {
+ postCredentialsToCache(credentialCacheData);
+ }
+
+ // Call out to Primary Service & Return Response
+ URI requestURI = new URI(request.getRequestURI());
+
+ LOGGER.debug("Request URI: {}", request.getRequestURI());
+
+ // Get Request Endpoint & substitute in local values
+ URI primaryServiceURI = new URI(primaryServiceProperties.getProtocol(), requestURI.getUserInfo(),
+ primaryServiceProperties.getHost(), Integer.parseInt(primaryServiceProperties.getPort()),
+ requestURI.getPath(), requestURI.getQuery(), requestURI.getFragment());
+
+ LOGGER.debug("Primary Service URI:{}, HTTP Method: {}", primaryServiceURI, requestMethod);
+
+ HttpHeaders requestHeaders = setForwardedRequestHeaders(request);
+ HttpEntity<String> httpEntity = new HttpEntity<>(requestBody, requestHeaders);
+
+ return restTemplate.exchange(primaryServiceURI, requestMethod, httpEntity, String.class);
+ }
+
+ private String getValidTransactionId(String transactionId) {
+ LOGGER.debug("Request transaction ID: {}", transactionId);
+ if (transactionId == null || !ReverseProxyUtils.validTransactionId(transactionId)) {
+ transactionId = UUID.randomUUID().toString();
+ }
+ LOGGER.debug("Validated transaction ID: {}", transactionId);
+ return transactionId;
+ }
+
+ private HttpHeaders setForwardedRequestHeaders(HttpServletRequest httpServletRequest) {
+ HttpHeaders httpHeaders = new HttpHeaders();
+ Enumeration<String> headerNames = httpServletRequest.getHeaderNames();
+ while (headerNames.hasMoreElements()) {
+ String headerName = headerNames.nextElement();
+ if (!headerName.equals(transactionIdHeader)) {
+ httpHeaders.set(headerName, httpServletRequest.getHeader(headerName));
+ }
+ }
+ // Always set transaction ID
+ httpHeaders.set(transactionIdHeader, validatedTransactionId);
+
+ return httpHeaders;
+ }
+
+ /**
+ * Retrieves credential data from request.
+ *
+ * @param request The request to retrieve credentials from
+ * @return The retrieved credential data, or null if no credentials are found in request
+ */
+ private CredentialCacheData getCredentialDataFromRequest(HttpServletRequest request) {
+ CredentialCacheData credentialCacheData = null;
+ String authValue = request.getHeader(HttpHeaders.AUTHORIZATION);
+ if (authValue != null) {
+ credentialCacheData = new CredentialCacheData(HttpHeaders.AUTHORIZATION, authValue, CredentialType.HEADER);
+ }
+ return credentialCacheData;
+ }
+
+ /**
+ * Posts credential data to credential cache endpoint
+ *
+ * @param credentialCacheData The credential data to post
+ * @throws URISyntaxException
+ */
+ private void postCredentialsToCache(CredentialCacheData credentialCacheData) throws URISyntaxException {
+ URI forwardProxyURI = new URI(forwardProxyProperties.getProtocol(), null, forwardProxyProperties.getHost(),
+ forwardProxyProperties.getPort(), forwardProxyProperties.getCacheurl() + "/" + validatedTransactionId,
+ null, null);
+
+ ResponseEntity<String> response =
+ restTemplate.postForEntity(forwardProxyURI, credentialCacheData, String.class);
+
+ if (!response.getStatusCode().is2xxSuccessful()) {
+ throw new InvalidEndpointRequestException("Error posting to credential cache.",
+ "Status code: " + response.getStatusCodeValue() + " Message: " + response.getBody());
+ }
+ }
+
+ @Override
+ public String toString() {
+ return this.getClass().getName() + ": Forward proxy host:" + forwardProxyProperties.getHost()
+ + ": Primary service host:" + primaryServiceProperties.getHost();
+
+ }
+}
Code Review / aaf / cadi.git / blobdiff