Add forward proxy code

[aaf/cadi.git] / sidecar / fproxy / src / main / java / org / onap / aaf / fproxy / service / ForwardingProxyService.java

diff --git a/sidecar/fproxy/src/main/java/org/onap/aaf/fproxy/service/ForwardingProxyService.java b/sidecar/fproxy/src/main/java/org/onap/aaf/fproxy/service/ForwardingProxyService.java
new file mode 100644 (file)
index 0000000..0d150ba
--- /dev/null
+++ b/sidecar/fproxy/src/main/java/org/onap/aaf/fproxy/service/ForwardingProxyService.java
@@ -0,0 +1,100 @@
+/**
+ * ============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.fproxy.service;
+
+import java.net.URI;
+import java.util.Enumeration;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import org.onap.aaf.fproxy.cache.utils.CacheUtils;
+import org.onap.aaf.fproxy.data.CredentialCacheData;
+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.http.HttpEntity;
+import org.springframework.http.HttpHeaders;
+import org.springframework.http.HttpMethod;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestMethod;
+import org.springframework.web.bind.annotation.RestController;
+import org.springframework.web.client.RestTemplate;
+import org.springframework.web.util.UriComponentsBuilder;
+
+@RestController
+public class ForwardingProxyService {
+
+    Logger logger = LoggerFactory.getLogger(ForwardingProxyService.class);
+
+    private static final long DEFAULT_CACHE_EXPIRY_MS = 180000; // 3 mins
+
+    @Autowired
+    RestTemplate restTemplate;
+
+    @Autowired
+    CacheUtils cacheUtils;
+
+    @Value("${credential.cache.timeout.ms:" + DEFAULT_CACHE_EXPIRY_MS + "}")
+    long cacheExpiryMs;
+
+    @RequestMapping(value = "/credential-cache/{transactionId}", method = RequestMethod.POST)
+    public ResponseEntity<String> addCredentialToCache(@PathVariable("transactionId") String transactionId,
+            @RequestBody CredentialCacheData credentialdata) {
+        logger.info("Updating credential cache with transaction ID: {}", transactionId);
+
+        // Update credential cache
+        logger.debug("Credential data: {}", credentialdata);
+        cacheUtils.addCredentialsToCache(transactionId, credentialdata, cacheExpiryMs);
+
+        logger.info("Credential cache successfully updated with transaction ID: {}", transactionId);
+        return new ResponseEntity<>(transactionId, HttpStatus.OK);
+    }
+
+    @RequestMapping("/**")
+    public ResponseEntity<String> forwardRest(@RequestBody(required = false) String body, HttpMethod method,
+            HttpServletRequest request, HttpServletResponse response) {
+
+        String requestUrl = request.getRequestURI();
+
+        logger.info("Request received: {}", requestUrl);
+
+        URI uri = UriComponentsBuilder.fromHttpUrl(request.getRequestURL().toString()).query(request.getQueryString())
+                .build(true).toUri();
+
+        HttpHeaders headers = new HttpHeaders();
+        Enumeration<String> headerNames = request.getHeaderNames();
+        while (headerNames.hasMoreElements()) {
+            String headerName = headerNames.nextElement();
+            headers.set(headerName, request.getHeader(headerName));
+        }
+
+        cacheUtils.populateCredentialsFromCache(headers, request);
+
+        HttpEntity<String> httpEntity = new HttpEntity<>(body, headers);
+
+        logger.info("Forwarding request...");
+
+        return restTemplate.exchange(uri, method, httpEntity, String.class);
+    }
+}