X-Git-Url: https://gerrit.onap.org/r/gitweb?a=blobdiff_plain;f=datarouter-prov%2Fsrc%2Fmain%2Fjava%2Forg%2Fonap%2Fdmaap%2Fdatarouter%2Fprovisioning%2Futils%2FSynchronizerTask.java;fp=datarouter-prov%2Fsrc%2Fmain%2Fjava%2Forg%2Fonap%2Fdmaap%2Fdatarouter%2Fprovisioning%2Futils%2FSynchronizerTask.java;h=5eeb45a22b82784c9a23902be2b1c8779e567194;hb=68a9ca240970fceaf12bbe91b7bad8e1d98ecd93;hp=0000000000000000000000000000000000000000;hpb=f3b3e701a48d529ee6dc88e3a867448498e23d36;p=dmaap%2Fdatarouter.git
diff --git a/datarouter-prov/src/main/java/org/onap/dmaap/datarouter/provisioning/utils/SynchronizerTask.java b/datarouter-prov/src/main/java/org/onap/dmaap/datarouter/provisioning/utils/SynchronizerTask.java
new file mode 100644
index 00000000..5eeb45a2
--- /dev/null
+++ b/datarouter-prov/src/main/java/org/onap/dmaap/datarouter/provisioning/utils/SynchronizerTask.java
@@ -0,0 +1,683 @@
+/*******************************************************************************
+ * ============LICENSE_START==================================================
+ * * org.onap.dmaap
+ * * ===========================================================================
+ * * Copyright © 2017 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====================================================
+ * *
+ * * ECOMP is a trademark and service mark of AT&T Intellectual Property.
+ * *
+ ******************************************************************************/
+
+
+package org.onap.dmaap.datarouter.provisioning.utils;
+
+import static org.onap.dmaap.datarouter.provisioning.BaseServlet.TEXT_CT;
+
+import com.att.eelf.configuration.EELFLogger;
+import com.att.eelf.configuration.EELFManager;
+import java.io.ByteArrayOutputStream;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.InputStream;
+import java.net.InetAddress;
+import java.net.UnknownHostException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.nio.file.StandardCopyOption;
+import java.security.KeyStore;
+import java.sql.Connection;
+import java.sql.SQLException;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.Set;
+import java.util.Timer;
+import java.util.TimerTask;
+import java.util.TreeSet;
+import javax.servlet.http.HttpServletResponse;
+import org.apache.http.HttpEntity;
+import org.apache.http.HttpResponse;
+import org.apache.http.client.methods.HttpGet;
+import org.apache.http.client.methods.HttpPost;
+import org.apache.http.conn.scheme.Scheme;
+import org.apache.http.conn.ssl.SSLSocketFactory;
+import org.apache.http.entity.ByteArrayEntity;
+import org.apache.http.entity.ContentType;
+import org.apache.http.impl.client.AbstractHttpClient;
+import org.apache.http.impl.client.DefaultHttpClient;
+import org.json.JSONArray;
+import org.json.JSONException;
+import org.json.JSONObject;
+import org.json.JSONTokener;
+import org.onap.dmaap.datarouter.provisioning.BaseServlet;
+import org.onap.dmaap.datarouter.provisioning.ProvRunner;
+import org.onap.dmaap.datarouter.provisioning.beans.EgressRoute;
+import org.onap.dmaap.datarouter.provisioning.beans.Feed;
+import org.onap.dmaap.datarouter.provisioning.beans.Group;
+import org.onap.dmaap.datarouter.provisioning.beans.IngressRoute;
+import org.onap.dmaap.datarouter.provisioning.beans.NetworkRoute;
+import org.onap.dmaap.datarouter.provisioning.beans.Parameters;
+import org.onap.dmaap.datarouter.provisioning.beans.Subscription;
+import org.onap.dmaap.datarouter.provisioning.beans.Syncable;
+
+/**
+ * This class handles synchronization between provisioning servers (PODs). It has three primary functions:
+ *
+ * - Checking DNS once per minute to see which POD the DNS CNAME points to. The CNAME will point to
+ * the active (master) POD.
+ * - On non-master (standby) PODs, fetches provisioning data and logs in order to keep MariaDB in sync.
+ * - Providing information to other parts of the system as to the current role (ACTIVE_POD, STANDBY_POD, UNKNOWN_POD)
+ * of this POD.
+ *
+ * For this to work correctly, the following code needs to be placed at the beginning of main().
+ *
+ * Security.setProperty("networkaddress.cache.ttl", "10");
+ *
+ *
+ * @author Robert Eby
+ * @version $Id: SynchronizerTask.java,v 1.10 2014/03/21 13:50:10 eby Exp $
+ */
+
+public class SynchronizerTask extends TimerTask {
+
+ /**
+ * This is a singleton -- there is only one SynchronizerTask object in the server.
+ */
+ private static SynchronizerTask synctask;
+
+ /**
+ * This POD is unknown -- not on the list of PODs.
+ */
+ public static final int UNKNOWN_POD = 0;
+ /**
+ * This POD is active -- on the list of PODs, and the DNS CNAME points to us.
+ */
+ public static final int ACTIVE_POD = 1;
+ /**
+ * This POD is standby -- on the list of PODs, and the DNS CNAME does not point to us.
+ */
+ public static final int STANDBY_POD = 2;
+
+ private static final String[] stnames = {"UNKNOWN_POD", "ACTIVE_POD", "STANDBY_POD"};
+ private static final long ONE_HOUR = 60 * 60 * 1000L;
+
+ private long nextMsg = 0; // only display the "Current podState" msg every 5 mins.
+
+ private final EELFLogger logger;
+ private final Timer rolex;
+ private final String spooldir;
+ private int podState;
+ private boolean doFetch;
+ private long nextsynctime;
+ private AbstractHttpClient httpclient = null;
+
+ @SuppressWarnings("deprecation")
+ private SynchronizerTask() {
+ logger = EELFManager.getInstance().getLogger("InternalLog");
+ rolex = new Timer();
+ spooldir = ProvRunner.getProvProperties().getProperty("org.onap.dmaap.datarouter.provserver.spooldir");
+ podState = UNKNOWN_POD;
+ doFetch = true; // start off with a fetch
+ nextsynctime = 0;
+
+ logger.info("PROV5000: Sync task starting, server podState is UNKNOWN_POD");
+ try {
+ // Set up keystore
+ String type = AafPropsUtils.KEYSTORE_TYPE_PROPERTY;
+ String store = ProvRunner.getAafPropsUtils().getKeystorePathProperty();
+ String pass = ProvRunner.getAafPropsUtils().getKeystorePassProperty();
+ KeyStore keyStore = KeyStore.getInstance(type);
+ try (FileInputStream instream = new FileInputStream(new File(store))) {
+ keyStore.load(instream, pass.toCharArray());
+
+ }
+ // Set up truststore
+ store = ProvRunner.getAafPropsUtils().getTruststorePathProperty();
+ pass = ProvRunner.getAafPropsUtils().getTruststorePassProperty();
+ KeyStore trustStore = null;
+ if (store != null && store.length() > 0) {
+ trustStore = KeyStore.getInstance(AafPropsUtils.TRUESTSTORE_TYPE_PROPERTY);
+ try (FileInputStream instream = new FileInputStream(new File(store))) {
+ trustStore.load(instream, pass.toCharArray());
+
+ }
+ }
+
+ // We are connecting with the node name, but the certificate will have the CNAME
+ // So we need to accept a non-matching certificate name
+ String keystorepass = ProvRunner.getAafPropsUtils().getKeystorePassProperty();
+ try (AbstractHttpClient hc = new DefaultHttpClient()) {
+ SSLSocketFactory socketFactory =
+ (trustStore == null)
+ ? new SSLSocketFactory(keyStore, keystorepass)
+ : new SSLSocketFactory(keyStore, keystorepass, trustStore);
+ socketFactory.setHostnameVerifier(SSLSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER);
+ Scheme sch = new Scheme("https", 443, socketFactory);
+ hc.getConnectionManager().getSchemeRegistry().register(sch);
+ httpclient = hc;
+ }
+ setSynchTimer(ProvRunner.getProvProperties().getProperty(
+ "org.onap.dmaap.datarouter.provserver.sync_interval", "5000"));
+ } catch (Exception e) {
+ logger.warn("PROV5005: Problem starting the synchronizer: " + e);
+ }
+ }
+
+ private void setSynchTimer(String strInterval) {
+ // Run once every 5 seconds to check DNS, etc.
+ long interval;
+ try {
+ interval = Long.parseLong(strInterval);
+ } catch (NumberFormatException e) {
+ interval = 5000L;
+ }
+ rolex.scheduleAtFixedRate(this, 0L, interval);
+ }
+
+ /**
+ * Get the singleton SynchronizerTask object.
+ *
+ * @return the SynchronizerTask
+ */
+ public static synchronized SynchronizerTask getSynchronizer() {
+ if (synctask == null) {
+ synctask = new SynchronizerTask();
+ }
+ return synctask;
+ }
+
+ /**
+ * What is the podState of this POD?.
+ *
+ * @return one of ACTIVE_POD, STANDBY_POD, UNKNOWN_POD
+ */
+ public int getPodState() {
+ return podState;
+ }
+
+ /**
+ * Is this the active POD?.
+ *
+ * @return true if we are active (the master), false otherwise
+ */
+ public boolean isActive() {
+ return podState == ACTIVE_POD;
+ }
+
+ /**
+ * This method is used to signal that another POD (the active POD) has sent us a /fetchProv request, and that we
+ * should re-synchronize with the master.
+ */
+ public void doFetch() {
+ doFetch = true;
+ }
+
+ /**
+ * Runs once a minute in order to
+ * - lookup DNS names,
+ * - determine the podState of this POD,
+ * - if this is a standby POD, and the fetch flag is set, perform a fetch of podState from the active POD.
+ * - if this is a standby POD, check if there are any new log records to be replicated.
+ *
.
+ */
+ @Override
+ public void run() {
+ try {
+ podState = lookupState();
+ if (podState == STANDBY_POD) {
+ // Only copy provisioning data FROM the active server TO the standby
+ if (doFetch || (System.currentTimeMillis() >= nextsynctime)) {
+ syncProvisioningData();
+ logger.info("PROV5013: Sync completed.");
+ nextsynctime = System.currentTimeMillis() + ONE_HOUR;
+ }
+ } else {
+ // Don't do fetches on non-standby PODs
+ doFetch = false;
+ }
+
+ // Fetch DR logs as needed - server to server
+ LogfileLoader lfl = LogfileLoader.getLoader();
+ if (lfl.isIdle()) {
+ // Only fetch new logs if the loader is waiting for them.
+ logger.trace("Checking for logs to replicate...");
+ RLEBitSet local = lfl.getBitSet();
+ RLEBitSet remote = readRemoteLoglist();
+ remote.andNot(local);
+ if (!remote.isEmpty()) {
+ logger.debug(" Replicating logs: " + remote);
+ replicateDataRouterLogs(remote);
+ }
+ }
+ } catch (Exception e) {
+ logger.warn("PROV0020: Caught exception in SynchronizerTask: " + e);
+ }
+ }
+
+ private void syncProvisioningData() {
+ logger.debug("Initiating a sync...");
+ JSONObject jo = readProvisioningJson();
+ if (jo != null) {
+ doFetch = false;
+ syncFeeds(jo.getJSONArray("feeds"));
+ syncSubs(jo.getJSONArray("subscriptions"));
+ syncGroups(jo.getJSONArray("groups")); //Rally:US708115 - 1610
+ syncParams(jo.getJSONObject("parameters"));
+ // The following will not be present in a version=1.0 provfeed
+ JSONArray ja = jo.optJSONArray("ingress");
+ if (ja != null) {
+ syncIngressRoutes(ja);
+ }
+ JSONObject j2 = jo.optJSONObject("egress");
+ if (j2 != null) {
+ syncEgressRoutes(j2);
+ }
+ ja = jo.optJSONArray("routing");
+ if (ja != null) {
+ syncNetworkRoutes(ja);
+ }
+ }
+ }
+
+ /**
+ * This method is used to lookup the CNAME that points to the active server.
+ * It returns 0 (UNKNOWN_POD), 1(ACTIVE_POD), or (STANDBY_POD) to indicate the podState of this server.
+ *
+ * @return the current podState
+ */
+ public int lookupState() {
+ int newPodState = UNKNOWN_POD;
+ try {
+ InetAddress myaddr = InetAddress.getLocalHost();
+ if (logger.isTraceEnabled()) {
+ logger.trace("My address: " + myaddr);
+ }
+ String thisPod = myaddr.getHostName();
+ Set pods = new TreeSet<>(Arrays.asList(BaseServlet.getPods()));
+ if (pods.contains(thisPod)) {
+ InetAddress pserver = InetAddress.getByName(BaseServlet.getActiveProvName());
+ newPodState = myaddr.equals(pserver) ? ACTIVE_POD : STANDBY_POD;
+ if (logger.isDebugEnabled() && System.currentTimeMillis() >= nextMsg) {
+ logger.debug("Active POD = " + pserver + ", Current podState is " + stnames[newPodState]);
+ nextMsg = System.currentTimeMillis() + (5 * 60 * 1000L);
+ }
+ } else {
+ logger.warn("PROV5003: My name (" + thisPod + ") is missing from the list of provisioning servers.");
+ }
+ } catch (UnknownHostException e) {
+ logger.warn("PROV5002: Cannot determine the name of this provisioning server.", e);
+ }
+
+ if (newPodState != podState) {
+ logger.info(String.format("PROV5001: Server podState changed from %s to %s",
+ stnames[podState], stnames[newPodState]));
+ }
+ return newPodState;
+ }
+
+ /**
+ * Synchronize the Feeds in the JSONArray, with the Feeds in the DB.
+ */
+ private void syncFeeds(JSONArray ja) {
+ Collection coll = new ArrayList<>();
+ for (int n = 0; n < ja.length(); n++) {
+ try {
+ Feed feed = new Feed(ja.getJSONObject(n));
+ coll.add(feed);
+ } catch (Exception e) {
+ logger.warn("PROV5004: Invalid object in feed: " + ja.optJSONObject(n), e);
+ }
+ }
+ if (sync(coll, Feed.getAllFeeds())) {
+ BaseServlet.provisioningDataChanged();
+ }
+ }
+
+ /**
+ * Synchronize the Subscriptions in the JSONArray, with the Subscriptions in the DB.
+ */
+ private void syncSubs(JSONArray ja) {
+ Collection coll = new ArrayList<>();
+ for (int n = 0; n < ja.length(); n++) {
+ try {
+ //Data Router Subscriber HTTPS Relaxation feature USERSTORYID:US674047.
+ JSONObject jsonObject = ja.getJSONObject(n);
+ jsonObject.put("sync", "true");
+ Subscription sub = new Subscription(jsonObject);
+ coll.add(sub);
+ } catch (Exception e) {
+ logger.warn("PROV5004: Invalid object in subscription: " + ja.optJSONObject(n), e);
+ }
+ }
+ if (sync(coll, Subscription.getAllSubscriptions())) {
+ BaseServlet.provisioningDataChanged();
+ }
+ }
+
+ /**
+ * Rally:US708115 - Synchronize the Groups in the JSONArray, with the Groups in the DB.
+ */
+ private void syncGroups(JSONArray ja) {
+ Collection coll = new ArrayList<>();
+ for (int n = 0; n < ja.length(); n++) {
+ try {
+ Group group = new Group(ja.getJSONObject(n));
+ coll.add(group);
+ } catch (Exception e) {
+ logger.warn("PROV5004: Invalid object in group: " + ja.optJSONObject(n), e);
+ }
+ }
+ if (sync(coll, Group.getAllgroups())) {
+ BaseServlet.provisioningDataChanged();
+ }
+ }
+
+
+ /**
+ * Synchronize the Parameters in the JSONObject, with the Parameters in the DB.
+ */
+ private void syncParams(JSONObject jo) {
+ Collection coll = new ArrayList<>();
+ for (String k : jo.keySet()) {
+ String val = "";
+ try {
+ val = jo.getString(k);
+ } catch (JSONException e) {
+ logger.warn("PROV5004: Invalid object in parameters: " + jo.optJSONObject(k), e);
+ try {
+ val = "" + jo.getInt(k);
+ } catch (JSONException e1) {
+ logger.warn("PROV5004: Invalid object in parameters: " + jo.optInt(k), e1);
+ JSONArray ja = jo.getJSONArray(k);
+ for (int i = 0; i < ja.length(); i++) {
+ if (i > 0) {
+ val += "|";
+ }
+ val += ja.getString(i);
+ }
+ }
+ }
+ coll.add(new Parameters(k, val));
+ }
+ if (sync(coll, Parameters.getParameterCollection())) {
+ BaseServlet.provisioningDataChanged();
+ BaseServlet.provisioningParametersChanged();
+ }
+ }
+
+ private void syncIngressRoutes(JSONArray ja) {
+ Collection coll = new ArrayList<>();
+ for (int n = 0; n < ja.length(); n++) {
+ try {
+ IngressRoute in = new IngressRoute(ja.getJSONObject(n));
+ coll.add(in);
+ } catch (NumberFormatException e) {
+ logger.warn("PROV5004: Invalid object in ingress routes: " + ja.optJSONObject(n));
+ }
+ }
+ if (sync(coll, IngressRoute.getAllIngressRoutes())) {
+ BaseServlet.provisioningDataChanged();
+ }
+ }
+
+ private void syncEgressRoutes(JSONObject jo) {
+ Collection coll = new ArrayList<>();
+ for (String key : jo.keySet()) {
+ try {
+ int sub = Integer.parseInt(key);
+ String node = jo.getString(key);
+ EgressRoute er = new EgressRoute(sub, node);
+ coll.add(er);
+ } catch (NumberFormatException e) {
+ logger.warn("PROV5004: Invalid subid in egress routes: " + key, e);
+ } catch (IllegalArgumentException e) {
+ logger.warn("PROV5004: Invalid node name in egress routes: " + key, e);
+ }
+ }
+ if (sync(coll, EgressRoute.getAllEgressRoutes())) {
+ BaseServlet.provisioningDataChanged();
+ }
+ }
+
+ private void syncNetworkRoutes(JSONArray ja) {
+ Collection coll = new ArrayList<>();
+ for (int n = 0; n < ja.length(); n++) {
+ try {
+ NetworkRoute nr = new NetworkRoute(ja.getJSONObject(n));
+ coll.add(nr);
+ } catch (JSONException e) {
+ logger.warn("PROV5004: Invalid object in network routes: " + ja.optJSONObject(n), e);
+ }
+ }
+ if (sync(coll, NetworkRoute.getAllNetworkRoutes())) {
+ BaseServlet.provisioningDataChanged();
+ }
+ }
+
+ private boolean sync(Collection newc, Collection oldc) {
+ boolean changes = false;
+ try {
+ Map newmap = getMap(newc);
+ Map oldmap = getMap(oldc);
+ Set union = new TreeSet<>(newmap.keySet());
+ union.addAll(oldmap.keySet());
+ for (String n : union) {
+ Syncable newobj = newmap.get(n);
+ Syncable oldobj = oldmap.get(n);
+ if (oldobj == null) {
+ try (Connection conn = ProvDbUtils.getInstance().getConnection()) {
+ changes = insertRecord(conn, newobj);
+ }
+ } else if (newobj == null) {
+ try (Connection conn = ProvDbUtils.getInstance().getConnection()) {
+ changes = deleteRecord(conn, oldobj);
+ }
+ } else if (!newobj.equals(oldobj)) {
+ try (Connection conn = ProvDbUtils.getInstance().getConnection()) {
+ changes = updateRecord(conn, newobj, oldobj);
+ }
+ }
+ }
+ } catch (SQLException e) {
+ logger.warn("PROV5009: problem during sync, exception: " + e);
+ }
+ return changes;
+ }
+
+ private boolean updateRecord(Connection conn, Syncable newobj, Syncable oldobj) {
+ if (logger.isDebugEnabled()) {
+ logger.debug(" Updating record: " + newobj);
+ }
+ boolean changes = newobj.doUpdate(conn);
+ checkChangeOwner(newobj, oldobj);
+
+ return changes;
+ }
+
+ private boolean deleteRecord(Connection conn, Syncable oldobj) {
+ if (logger.isDebugEnabled()) {
+ logger.debug(" Deleting record: " + oldobj);
+ }
+ return oldobj.doDelete(conn);
+ }
+
+ private boolean insertRecord(Connection conn, Syncable newobj) {
+ if (logger.isDebugEnabled()) {
+ logger.debug(" Inserting record: " + newobj);
+ }
+ return newobj.doInsert(conn);
+ }
+
+ private Map getMap(Collection coll) {
+ Map map = new HashMap<>();
+ for (Syncable v : coll) {
+ map.put(v.getKey(), v);
+ }
+ return map;
+ }
+
+ /**
+ * Change owner of FEED/SUBSCRIPTION.
+ * Rally US708115 Change Ownership of FEED - 1610
+ */
+ private void checkChangeOwner(Syncable newobj, Syncable oldobj) {
+ if (newobj instanceof Feed) {
+ Feed oldfeed = (Feed) oldobj;
+ Feed newfeed = (Feed) newobj;
+
+ if (!oldfeed.getPublisher().equals(newfeed.getPublisher())) {
+ logger.info("PROV5013 - Previous publisher: "
+ + oldfeed.getPublisher() + ": New publisher-" + newfeed.getPublisher());
+ oldfeed.setPublisher(newfeed.getPublisher());
+ oldfeed.changeOwnerShip();
+ }
+ } else if (newobj instanceof Subscription) {
+ Subscription oldsub = (Subscription) oldobj;
+ Subscription newsub = (Subscription) newobj;
+
+ if (!oldsub.getSubscriber().equals(newsub.getSubscriber())) {
+ logger.info("PROV5013 - Previous subscriber: "
+ + oldsub.getSubscriber() + ": New subscriber-" + newsub.getSubscriber());
+ oldsub.setSubscriber(newsub.getSubscriber());
+ oldsub.changeOwnerShip();
+ }
+ }
+
+ }
+
+ /**
+ * Issue a GET on the peer POD's /internal/prov/ URL to get a copy of its provisioning data.
+ *
+ * @return the provisioning data (as a JONObject)
+ */
+ private synchronized JSONObject readProvisioningJson() {
+ String url = URLUtilities.generatePeerProvURL();
+ HttpGet get = new HttpGet(url);
+ try {
+ HttpResponse response = httpclient.execute(get);
+ int code = response.getStatusLine().getStatusCode();
+ if (code != HttpServletResponse.SC_OK) {
+ logger.warn("PROV5010: readProvisioningJson failed, bad error code: " + code);
+ return null;
+ }
+ HttpEntity entity = response.getEntity();
+ String ctype = entity.getContentType().getValue().trim();
+ if (!ctype.equals(BaseServlet.PROVFULL_CONTENT_TYPE1)
+ && !ctype.equals(BaseServlet.PROVFULL_CONTENT_TYPE2)) {
+ logger.warn("PROV5011: readProvisioningJson failed, bad content type: " + ctype);
+ return null;
+ }
+ return new JSONObject(new JSONTokener(entity.getContent()));
+ } catch (Exception e) {
+ logger.warn("PROV5012: readProvisioningJson failed, exception: " + e);
+ return null;
+ } finally {
+ get.releaseConnection();
+ }
+ }
+
+ /**
+ * Issue a GET on the peer POD's /internal/drlogs/ URL to get an RELBitSet representing the log records available in
+ * the remote database.
+ *
+ * @return the bitset
+ */
+ public RLEBitSet readRemoteLoglist() {
+ RLEBitSet bs = new RLEBitSet();
+ String url = URLUtilities.generatePeerLogsURL();
+
+ //Fixing if only one Prov is configured, not to give exception to fill logs, return empty bitset.
+ if ("".equals(url)) {
+ return bs;
+ }
+ //End of fix.
+
+ HttpGet get = new HttpGet(url);
+ try (ByteArrayOutputStream bos = new ByteArrayOutputStream()) {
+ HttpResponse response = httpclient.execute(get);
+ int code = response.getStatusLine().getStatusCode();
+ if (code != HttpServletResponse.SC_OK) {
+ logger.warn("PROV5010: readRemoteLoglist failed, bad error code: " + code);
+ return bs;
+ }
+ HttpEntity entity = response.getEntity();
+ String ctype = entity.getContentType().getValue().trim();
+ if (!TEXT_CT.equals(ctype)) {
+ logger.warn("PROV5011: readRemoteLoglist failed, bad content type: " + ctype);
+ return bs;
+ }
+ InputStream is = entity.getContent();
+ int ch;
+ while ((ch = is.read()) >= 0) {
+ bos.write(ch);
+ }
+ bs.set(bos.toString());
+ is.close();
+ } catch (Exception e) {
+ logger.warn("PROV5012: readRemoteLoglist failed, exception: " + e);
+ return bs;
+ } finally {
+ get.releaseConnection();
+ }
+ return bs;
+ }
+
+ /**
+ * Issue a POST on the peer POD's /internal/drlogs/ URL to fetch log records available in the remote database that
+ * we wish to copy to the local database.
+ *
+ * @param bs the bitset (an RELBitSet) of log records to fetch
+ */
+ public void replicateDataRouterLogs(RLEBitSet bs) {
+ String url = URLUtilities.generatePeerLogsURL();
+ HttpPost post = new HttpPost(url);
+ try {
+ String str = bs.toString();
+ HttpEntity body = new ByteArrayEntity(str.getBytes(), ContentType.create(TEXT_CT));
+ post.setEntity(body);
+ if (logger.isDebugEnabled()) {
+ logger.debug("Requesting records: " + str);
+ }
+
+ HttpResponse response = httpclient.execute(post);
+ int code = response.getStatusLine().getStatusCode();
+ if (code != HttpServletResponse.SC_OK) {
+ logger.warn("PROV5010: replicateDataRouterLogs failed, bad error code: " + code);
+ return;
+ }
+ HttpEntity entity = response.getEntity();
+ String ctype = entity.getContentType().getValue().trim();
+ if (!TEXT_CT.equals(ctype)) {
+ logger.warn("PROV5011: replicateDataRouterLogs failed, bad content type: " + ctype);
+ return;
+ }
+
+ String spoolname = "" + System.currentTimeMillis();
+ Path tmppath = Paths.get(spooldir, spoolname);
+ Path donepath = Paths.get(spooldir, "IN." + spoolname);
+ Files.copy(entity.getContent(), Paths.get(spooldir, spoolname), StandardCopyOption.REPLACE_EXISTING);
+ Files.move(tmppath, donepath, StandardCopyOption.REPLACE_EXISTING);
+ logger.info("Approximately " + bs.cardinality() + " records replicated.");
+ } catch (Exception e) {
+ logger.warn("PROV5012: replicateDataRouterLogs failed, exception: " + e);
+ } finally {
+ post.releaseConnection();
+ }
+ }
+}