* * Licensed under the Apache License, Version 2.0 (the "License");\r
* * you may not use this file except in compliance with the License.\r
* * You may obtain a copy of the License at\r
- * * \r
+ * *\r
* * http://www.apache.org/licenses/LICENSE-2.0\r
- * * \r
+ * *\r
* * Unless required by applicable law or agreed to in writing, software\r
* * distributed under the License is distributed on an "AS IS" BASIS,\r
* * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r
\r
package org.onap.dmaap.datarouter.provisioning;\r
\r
+import com.att.eelf.configuration.EELFLogger;\r
+import com.att.eelf.configuration.EELFManager;\r
+\r
import java.io.IOException;\r
-import java.io.InputStream;\r
import java.util.ArrayList;\r
import java.util.Collection;\r
import java.util.List;\r
-import java.util.Properties;\r
-\r
import javax.servlet.ServletConfig;\r
import javax.servlet.ServletException;\r
import javax.servlet.http.HttpServletRequest;\r
import javax.servlet.http.HttpServletResponse;\r
\r
+import org.apache.commons.lang3.StringUtils;\r
import org.json.JSONArray;\r
+import org.json.JSONException;\r
import org.json.JSONObject;\r
import org.json.JSONTokener;\r
import org.onap.dmaap.datarouter.provisioning.beans.EventLogRecord;\r
-import org.onap.dmaap.datarouter.provisioning.beans.Feed;\r
import org.onap.dmaap.datarouter.provisioning.beans.IngressRoute;\r
import org.onap.dmaap.datarouter.provisioning.eelf.EelfMsgs;\r
-import org.onap.dmaap.datarouter.provisioning.utils.*;\r
-\r
-import com.att.eelf.configuration.EELFLogger;\r
-import com.att.eelf.configuration.EELFManager;\r
+import org.onap.dmaap.datarouter.provisioning.utils.DB;\r
\r
/**\r
- * This servlet handles redirects for the <publishURL> on the provisioning server,\r
- * which is generated by the provisioning server to handle a particular subscriptions to a feed.\r
- * See the <b>File Publishing and Delivery API</b> document for details on how these methods\r
- * should be invoked.\r
+ * This servlet handles redirects for the <publishURL> on the provisioning server, which is generated by the\r
+ * provisioning server to handle a particular subscriptions to a feed. See the <b>File Publishing and Delivery API</b>\r
+ * document for details on how these methods should be invoked.\r
*\r
* @author Robert Eby\r
* @version $Id: PublishServlet.java,v 1.8 2014/03/12 19:45:41 eby Exp $\r
*/\r
@SuppressWarnings("serial")\r
+\r
public class PublishServlet extends BaseServlet {\r
- private int next_node;\r
- private String provstring;\r
- private List<IngressRoute> irt;\r
- //Adding EELF Logger Rally:US664892 \r
- private static EELFLogger eelflogger = EELFManager.getInstance().getLogger("org.onap.dmaap.datarouter.provisioning.PublishServlet");\r
- \r
-\r
- @Override\r
- public void init(ServletConfig config) throws ServletException {\r
- super.init(config);\r
- next_node = 0;\r
- provstring = "";\r
- irt = new ArrayList<IngressRoute>();\r
- \r
- }\r
- @Override\r
- public void doDelete(HttpServletRequest req, HttpServletResponse resp) throws IOException {\r
- setIpAndFqdnForEelf("doDelete");\r
- eelflogger.info(EelfMsgs.MESSAGE_WITH_BEHALF_AND_FEEDID, req.getHeader(BEHALF_HEADER),getIdFromPath(req)+"");\r
- redirect(req, resp);\r
- }\r
- @Override\r
- public void doGet(HttpServletRequest req, HttpServletResponse resp) throws IOException {\r
- setIpAndFqdnForEelf("doGet");\r
- eelflogger.info(EelfMsgs.MESSAGE_WITH_BEHALF_AND_FEEDID, req.getHeader(BEHALF_HEADER),getIdFromPath(req)+"");\r
- redirect(req, resp);\r
- }\r
- @Override\r
- public void doPut(HttpServletRequest req, HttpServletResponse resp) throws IOException {\r
- setIpAndFqdnForEelf("doPut");\r
- eelflogger.info(EelfMsgs.MESSAGE_WITH_BEHALF_AND_FEEDID, req.getHeader(BEHALF_HEADER),getIdFromPath(req)+"");\r
- redirect(req, resp);\r
- }\r
- @Override\r
- public void doPost(HttpServletRequest req, HttpServletResponse resp) throws IOException {\r
- setIpAndFqdnForEelf("doPost");\r
- eelflogger.info(EelfMsgs.MESSAGE_WITH_BEHALF, req.getHeader(BEHALF_HEADER));\r
- redirect(req, resp);\r
- }\r
- private void redirect(HttpServletRequest req, HttpServletResponse resp) throws IOException {\r
- String[] nodes = getNodes();\r
- if (nodes == null || nodes.length == 0) {\r
- resp.sendError(HttpServletResponse.SC_SERVICE_UNAVAILABLE, "There are no nodes defined in the DR network.");\r
- } else {\r
- EventLogRecord elr = new EventLogRecord(req);\r
- int feedid = checkPath(req);\r
- if (feedid < 0) {\r
- String message = (feedid == -1)\r
- ? "Invalid request - Missing or bad feed number."\r
- : "Invalid request - Missing file ID.";\r
- elr.setMessage(message);\r
- elr.setResult(HttpServletResponse.SC_NOT_FOUND);\r
- eventlogger.info(elr);\r
-\r
- resp.sendError(HttpServletResponse.SC_NOT_FOUND, message);\r
- } else {\r
- // Generate new URL\r
- String nextnode = getRedirectNode(feedid, req);\r
- nextnode = nextnode+":"+DB.HTTPS_PORT;\r
- String newurl = "https://" + nextnode + "/publish" + req.getPathInfo();\r
- String qs = req.getQueryString();\r
- if (qs != null)\r
- newurl += "?" + qs;\r
-\r
- // Log redirect in event log\r
- String message = "Redirected to: "+newurl;\r
- elr.setMessage(message);\r
- elr.setResult(HttpServletResponse.SC_MOVED_PERMANENTLY);\r
- eventlogger.info(elr);\r
-\r
- resp.setStatus(HttpServletResponse.SC_MOVED_PERMANENTLY);\r
- resp.setHeader("Location", newurl);\r
- }\r
- }\r
- }\r
- private String getRedirectNode(int feedid, HttpServletRequest req) {\r
- // Check to see if the IRT needs to be updated\r
- Poker p = Poker.getPoker();\r
- String s = p.getProvisioningString();\r
- synchronized (provstring) {\r
- if (irt == null || (s.length() != provstring.length()) || !s.equals(provstring)) {\r
- // Provisioning string has changed -- update the IRT\r
- provstring = s;\r
- JSONObject jo = new JSONObject(new JSONTokener(provstring));\r
- JSONArray ja = jo.getJSONArray("ingress");\r
- List<IngressRoute> newlist = new ArrayList<IngressRoute>();\r
- for (int i = 0; i < ja.length(); i++) {\r
- IngressRoute iroute = new IngressRoute(ja.getJSONObject(i));\r
- newlist.add(iroute);\r
- }\r
- irt = newlist;\r
- }\r
- }\r
-\r
- // Look in IRT for next node\r
- for (IngressRoute route : irt) {\r
- if (route.matches(feedid, req)) {\r
- // pick a node at random from the list\r
- Collection<String> nodes = route.getNodes();\r
- String[] arr = nodes.toArray(new String[0]);\r
- long id = System.currentTimeMillis() % arr.length;\r
- String node = arr[(int) id];\r
- intlogger.info("Redirecting to "+node+" because of route "+route);\r
- return node;\r
- }\r
- }\r
-\r
- // No IRT rule matches, do round robin of all active nodes\r
- String[] nodes = getNodes();\r
- if (next_node >= nodes.length) // The list of nodes may have grown/shrunk\r
- next_node = 0;\r
- return nodes[next_node++];\r
- }\r
- private int checkPath(HttpServletRequest req) {\r
- String path = req.getPathInfo();\r
- if (path == null || path.length() < 2)\r
- return -1;\r
- path = path.substring(1);\r
- int ix = path.indexOf('/');\r
- if (ix < 0 || ix == path.length()-1)\r
- return -2;\r
- try {\r
- int feedid = Integer.parseInt(path.substring(0, ix));\r
- if (!Feed.isFeedValid(feedid))\r
- return -1;\r
- return feedid;\r
- } catch (NumberFormatException e) {\r
- return -1;\r
- }\r
- }\r
+\r
+ private int nextNode;\r
+ private String provstring;\r
+ private List<IngressRoute> irt;\r
+ //Adding EELF Logger Rally:US664892\r
+ private static EELFLogger eelfLogger = EELFManager.getInstance()\r
+ .getLogger(PublishServlet.class);\r
+ private static final Object lock = new Object();\r
+\r
+\r
+ @Override\r
+ public void init(ServletConfig config) throws ServletException {\r
+ super.init(config);\r
+ nextNode = 0;\r
+ provstring = "";\r
+ irt = new ArrayList<>();\r
+\r
+ }\r
+\r
+ @Override\r
+ public void doDelete(HttpServletRequest req, HttpServletResponse resp) {\r
+ setUpEelfForPublishServlet(req, "doDelete");\r
+ eelfLogger.info(EelfMsgs.ENTRY);\r
+ try {\r
+ eelfLogger.info(EelfMsgs.MESSAGE_WITH_BEHALF_AND_FEEDID,\r
+ req.getHeader(BEHALF_HEADER), getIdFromPath(req) + "");\r
+ redirect(req, resp);\r
+ } finally {\r
+ eelfLogger.info(EelfMsgs.EXIT);\r
+ }\r
+ }\r
+\r
+ @Override\r
+ public void doGet(HttpServletRequest req, HttpServletResponse resp) {\r
+ setUpEelfForPublishServlet(req, "doGet");\r
+ eelfLogger.info(EelfMsgs.ENTRY);\r
+ try {\r
+ eelfLogger.info(EelfMsgs.MESSAGE_WITH_BEHALF_AND_FEEDID,\r
+ req.getHeader(BEHALF_HEADER), getIdFromPath(req) + "");\r
+ redirect(req, resp);\r
+ } finally {\r
+ eelfLogger.info(EelfMsgs.EXIT);\r
+ }\r
+ }\r
+\r
+ @Override\r
+ public void doPut(HttpServletRequest req, HttpServletResponse resp) {\r
+ setUpEelfForPublishServlet(req, "doPut");\r
+ eelfLogger.info(EelfMsgs.ENTRY);\r
+ try {\r
+ eelfLogger.info(EelfMsgs.MESSAGE_WITH_BEHALF_AND_FEEDID,\r
+ req.getHeader(BEHALF_HEADER), getIdFromPath(req) + "");\r
+ redirect(req, resp);\r
+ } finally {\r
+ eelfLogger.info(EelfMsgs.EXIT);\r
+ }\r
+ }\r
+\r
+ @Override\r
+ public void doPost(HttpServletRequest req, HttpServletResponse resp) {\r
+ setUpEelfForPublishServlet(req, "doPost");\r
+ eelfLogger.info(EelfMsgs.ENTRY);\r
+ try {\r
+ eelfLogger.info(EelfMsgs.MESSAGE_WITH_BEHALF, req.getHeader(BEHALF_HEADER));\r
+ redirect(req, resp);\r
+ } finally {\r
+ eelfLogger.info(EelfMsgs.EXIT);\r
+ }\r
+\r
+ }\r
+\r
+ private void setUpEelfForPublishServlet(HttpServletRequest req, String method) {\r
+ if (StringUtils.isBlank(req.getHeader("X-ONAP-RequestID"))\r
+ || StringUtils.isBlank(req.getHeader("X-InvocationID"))) {\r
+ setIpFqdnForEelf(method);\r
+ } else {\r
+ setIpFqdnRequestIDandInvocationIDForEelf(method, req);\r
+ }\r
+ }\r
+\r
+ private void redirect(HttpServletRequest req, HttpServletResponse resp) {\r
+ try {\r
+ String[] nodes = getNodes();\r
+ if (nodes == null || nodes.length == 0) {\r
+ resp.sendError(HttpServletResponse.SC_SERVICE_UNAVAILABLE,\r
+ "There are no nodes defined in the DR network.");\r
+ } else {\r
+ EventLogRecord elr = new EventLogRecord(req);\r
+ int feedid = checkPath(req);\r
+ if (feedid < 0) {\r
+ String message = (feedid == -1)\r
+ ? "Invalid request - Missing or bad feed number."\r
+ : "Invalid request - Missing file ID.";\r
+ elr.setMessage(message);\r
+ elr.setResult(HttpServletResponse.SC_NOT_FOUND);\r
+ eventlogger.error(elr.toString());\r
+\r
+ resp.sendError(HttpServletResponse.SC_NOT_FOUND, message);\r
+ } else {\r
+ // Generate new URL\r
+ String nextnode = getRedirectNode(feedid, req);\r
+ nextnode = nextnode + ":" + DB.getHttpsPort();\r
+ String newurl = "https://" + nextnode + "/publish" + req.getPathInfo();\r
+ String qs = req.getQueryString();\r
+ if (qs != null) {\r
+ newurl += "?" + qs;\r
+ }\r
+\r
+ // Log redirect in event log\r
+ String message = "Redirected to: " + newurl;\r
+ elr.setMessage(message);\r
+ elr.setResult(HttpServletResponse.SC_MOVED_PERMANENTLY);\r
+ eventlogger.info(elr.toString());\r
+\r
+ resp.setStatus(HttpServletResponse.SC_MOVED_PERMANENTLY);\r
+ resp.setHeader("Location", newurl);\r
+ }\r
+ }\r
+ } catch (IOException ioe) {\r
+ intlogger.error("PROV0151 PublishServlet.redirect: " + ioe.getMessage(), ioe);\r
+ }\r
+ }\r
+\r
+ private String getRedirectNode(int feedid, HttpServletRequest req) {\r
+ // Check to see if the IRT needs to be updated\r
+ Poker pkr = Poker.getPoker();\r
+ String str = pkr.getProvisioningString();\r
+ synchronized (lock) {\r
+ if (irt == null || (str.length() != provstring.length()) || !str.equals(provstring)) {\r
+ // Provisioning string has changed -- update the IRT\r
+ provstring = str;\r
+ JSONObject jo = new JSONObject(new JSONTokener(provstring));\r
+ JSONArray ja = jo.getJSONArray("ingress");\r
+ List<IngressRoute> newlist = new ArrayList<>();\r
+ for (int i = 0; i < ja.length(); i++) {\r
+ IngressRoute iroute = new IngressRoute(ja.getJSONObject(i));\r
+ newlist.add(iroute);\r
+ }\r
+ irt = newlist;\r
+ }\r
+ }\r
+\r
+ // Look in IRT for next node\r
+ for (IngressRoute route : irt) {\r
+ if (route.matches(feedid, req)) {\r
+ // pick a node at random from the list\r
+ Collection<String> nodes = route.getNodes();\r
+ String[] arr = nodes.toArray(new String[0]);\r
+ long id = System.currentTimeMillis() % arr.length;\r
+ String node = arr[(int) id];\r
+ intlogger.info("Redirecting to " + node + " because of route " + route);\r
+ return node;\r
+ }\r
+ }\r
+\r
+ // No IRT rule matches, do round robin of all active nodes\r
+ String[] nodes = getNodes();\r
+ if (nextNode >= nodes.length) { // The list of nodes may have grown/shrunk\r
+ nextNode = 0;\r
+ }\r
+ return nodes[nextNode++];\r
+ }\r
+\r
+ private int checkPath(HttpServletRequest req) {\r
+ String path = req.getPathInfo();\r
+ if (path == null || path.length() < 2) {\r
+ return -1;\r
+ }\r
+ path = path.substring(1);\r
+ int ix = path.indexOf('/');\r
+ if (ix < 0 || ix == path.length() - 1) {\r
+ return -2;\r
+ }\r
+ try {\r
+ int feedid = Integer.parseInt(path.substring(0, ix));\r
+ String provData = Poker.getPoker().getProvisioningString();\r
+ JSONArray feeds = new JSONObject(provData).getJSONArray("feeds");\r
+ for (int n = 0; n < feeds.length(); ++n) {\r
+ if (feeds.getJSONObject(n).getInt("feedid") == feedid) {\r
+ return feedid;\r
+ }\r
+ }\r
+ return -1;\r
+ } catch (NumberFormatException | JSONException e) {\r
+ intlogger.debug("PROV0152 PublishServlet.checkPath: " + e.getMessage(), e);\r
+ return -1;\r
+ }\r
+ }\r
}\r
Code Review / dmaap / datarouter.git / blobdiff