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authorJim Hahn <jrh3@att.com>2019-08-14 17:31:50 -0400
committerJim Hahn <jrh3@att.com>2019-08-15 11:23:31 -0400
commit59e9b9a8b56d563814ef21a23716959f772f9194 (patch)
treef152aea1578a82737501f56916ca07d8e7889d18 /feature-active-standby-management/src/main/java
parenta156cf3cbad6512510ae9a02a13c0408f901c734 (diff)
Fix more sonar issues in drools-pdp
Addressed issues of cyclomatic complexity and deep nesting by refactoring code into separate methods. In some cases, had to refactor the code into nested classes to avoid passing too many parameters to the newly extracted methods. Addressed issue "too many conditionals" by breaking conditionals apart. Addressed issue "Remove usage of generic wildcard type" by eliminating "? extends" from return values. Addressed issue "Remove this use of 'Thread.sleep()'" in junit tests by introducing latches or using Awaitility. Note: this won't build until ApiUtils has been merged. Change-Id: I0d5596b4cb918a36bc22f426f426bd238195b458 Issue-ID: POLICY-1968 Signed-off-by: Jim Hahn <jrh3@att.com>
Diffstat (limited to 'feature-active-standby-management/src/main/java')
-rw-r--r--feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/DroolsPdpsElectionHandler.java1026
-rw-r--r--feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/JpaDroolsPdpsConnector.java45
-rw-r--r--feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/PmStandbyStateChangeNotifier.java259
3 files changed, 715 insertions, 615 deletions
diff --git a/feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/DroolsPdpsElectionHandler.java b/feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/DroolsPdpsElectionHandler.java
index 33c8a8d8..85cf88b3 100644
--- a/feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/DroolsPdpsElectionHandler.java
+++ b/feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/DroolsPdpsElectionHandler.java
@@ -202,255 +202,7 @@ public class DroolsPdpsElectionHandler implements ThreadRunningChecker {
logger.debug("DesignatedWaiter.run: pdps.size= {}", pdps.size());
//This is only true if all designated PDPs have failed
- boolean designatedPdpHasFailed = pdpsConnector.hasDesignatedPdpFailed(pdps);
- logger.debug("DesignatedWaiter.run: designatedPdpHasFailed= {}", designatedPdpHasFailed);
- for (DroolsPdp pdp : pdps) {
- logger.debug("DesignatedWaiter.run: evaluating pdp ID: {}", pdp.getPdpId());
-
- /*
- * Note: side effect of isPdpCurrent is that any stale but
- * designated PDPs will be marked as un-designated.
- */
- boolean isCurrent = pdpsConnector.isPdpCurrent(pdp);
-
- /*
- * We can't use stateManagement.getStandbyStatus() here, because
- * we need the standbyStatus, not for this PDP, but for the PDP
- * being processed by this loop iteration.
- */
- String standbyStatus = stateManagementFeature.getStandbyStatus(pdp.getPdpId());
- if (standbyStatus == null) {
- // Treat this case as a cold standby -- if we
- // abort here, no sessions will be created in a
- // single-node test environment.
- standbyStatus = StateManagement.COLD_STANDBY;
- }
- logger.debug("DesignatedWaiter.run: PDP= {}, isCurrent= {}", pdp.getPdpId(), isCurrent);
-
- /*
- * There are 4 combinations of isDesignated and isCurrent. We will examine each one in-turn
- * and evaluate the each pdp in the list of pdps against each combination.
- *
- * This is the first combination of isDesignated and isCurrent
- */
- if (pdp.isDesignated() && isCurrent) {
- //It is current, but it could have a standbystatus=coldstandby / hotstandby
- //If so, we need to stand it down and demote it
- if (!standbyStatus.equals(StateManagement.PROVIDING_SERVICE)) {
- if (pdp.getPdpId().equals(myPdp.getPdpId())) {
- logger.debug("\n\nDesignatedWaiter.run: myPdp {} is current and designated, "
- + "butstandbystatus is not providingservice. "
- + " Executing stateManagement.demote()" + "\n\n", myPdp.getPdpId());
- // So, we must demote it
- try {
- //Keep the order like this. StateManagement is last since it
- //triggers controller shutdown
- //This will change isDesignated and it can enter another if(combination) below
- pdpsConnector.standDownPdp(pdp.getPdpId());
- myPdp.setDesignated(false);
- isDesignated = false;
- if (!(standbyStatus.equals(StateManagement.HOT_STANDBY)
- || standbyStatus.equals(StateManagement.COLD_STANDBY))) {
- /*
- * Only demote it if it appears it has not already been demoted. Don't worry
- * about synching with the topic endpoint states. That is done by the
- * refreshStateAudit
- */
- stateManagementFeature.demote();
- }
- //update the standbystatus to check in a later
- //combination of isDesignated and isCurrent
- standbyStatus = stateManagementFeature.getStandbyStatus(pdp.getPdpId());
- } catch (Exception e) {
- logger.error("DesignatedWaiter.run: myPdp: {} "
- + "Caught Exception attempting to demote myPdp,"
- + "message= {}", myPdp.getPdpId(), e);
- }
- } else {
- // Don't demote a remote PDP that is current. It should catch itself
- logger.debug("\n\nDesignatedWaiter.run: myPdp {} is current and designated, "
- + "but standbystatus is not providingservice. "
- + " Cannot execute stateManagement.demote() "
- + "since it it is not myPdp\n\n",
- myPdp.getPdpId());
- }
-
- } else {
- // If we get here, it is ok to be on the list
- logger.debug("DesignatedWaiter.run: PDP= {} is designated, "
- + "current and {} Noting PDP as "
- + "designated, standbyStatus= {}",
- pdp.getPdpId(), standbyStatus, standbyStatus);
- listOfDesignated.add(pdp);
- }
-
-
- }
-
-
- /*
- * The second combination of isDesignated and isCurrent
- *
- * PDP is designated but not current; it has failed.
- * So we stand it down (it doesn't matter what
- * its standbyStatus is). None of these go on the list.
- */
- if (pdp.isDesignated() && !isCurrent) {
- logger.debug("INFO: DesignatedWaiter.run: PDP= {} is currently "
- + "designated but is not current; "
- + "it has failed. Standing down. standbyStatus= {}",
- pdp.getPdpId(), standbyStatus);
- /*
- * Changes designated to 0 but it is still potentially providing service
- * Will affect isDesignated, so, it can enter an if(combination) below
- */
- pdpsConnector.standDownPdp(pdp.getPdpId());
-
- //need to change standbystatus to coldstandby
- if (pdp.getPdpId().equals(myPdp.getPdpId())) {
- logger.debug("\n\nDesignatedWaiter.run: myPdp {} is not Current. "
- + " Executing stateManagement.disableFailed()\n\n", myPdp.getPdpId());
- // We found that myPdp is designated but not current
- // So, we must cause it to disableFail
- try {
- myPdp.setDesignated(false);
- pdpsConnector.setDesignated(myPdp, false);
- isDesignated = false;
- stateManagementFeature.disableFailed();
- } catch (Exception e) {
- logger.error("DesignatedWaiter.run: myPdp: {} Caught Exception "
- + "attempting to disableFail myPdp {}, message= {}",
- myPdp.getPdpId(), myPdp.getPdpId(), e);
- }
- } else { //it is a remote PDP that is failed
- logger.debug("\n\nDesignatedWaiter.run: PDP {} is not Current. "
- + " Executing stateManagement.disableFailed(otherResourceName)\n\n",
- pdp.getPdpId() );
- // We found a PDP is designated but not current
- // We already called standdown(pdp) which will change designated to false
- // Now we need to disableFail it to get its states in synch. The standbyStatus
- // should equal coldstandby
- try {
- stateManagementFeature.disableFailed(pdp.getPdpId());
- } catch (Exception e) {
- logger.error("DesignatedWaiter.run: for PDP {} Caught Exception attempting to "
- + "disableFail({}), message= {}",
- pdp.getPdpId(), pdp.getPdpId(), e);
- }
-
- }
- continue; //we are not going to do anything else with this pdp
- }
-
- /*
- * The third combination of isDesignated and isCurrent
- * /*
- * If a PDP is not currently designated but is providing service
- * (erroneous, but recoverable) or hot standby
- * we can add it to the list of possible designated if all the designated have failed
- */
- if (!pdp.isDesignated() && isCurrent) {
- if (!(standbyStatus.equals(StateManagement.HOT_STANDBY)
- || standbyStatus.equals(StateManagement.COLD_STANDBY))) {
- logger.debug("\n\nDesignatedWaiter.run: PDP {}"
- + " is NOT designated but IS current and"
- + " has a standbystatus= {}", pdp.getPdpId(), standbyStatus);
- // Since it is current, we assume it can adjust its own state.
- // We will demote if it is myPdp
- if (pdp.getPdpId().equals(myPdp.getPdpId())) {
- //demote it
- logger.debug("DesignatedWaiter.run: PDP {} going to "
- + "setDesignated = false and calling stateManagement.demote",
- pdp.getPdpId());
- try {
- //Keep the order like this.
- //StateManagement is last since it triggers controller shutdown
- pdpsConnector.setDesignated(myPdp, false);
- myPdp.setDesignated(false);
- isDesignated = false;
- //This is definitely not a redundant call.
- //It is attempting to correct a problem
- stateManagementFeature.demote();
- //recheck the standbystatus
- standbyStatus = stateManagementFeature.getStandbyStatus(pdp.getPdpId());
- } catch (Exception e) {
- logger.error("DesignatedWaiter.run: myPdp: {} Caught Exception "
- + "attempting to demote myPdp {}, message = {}", myPdp.getPdpId(),
- myPdp.getPdpId(), e);
- }
-
- }
- }
- if (standbyStatus.equals(StateManagement.HOT_STANDBY) && designatedPdpHasFailed) {
- //add it to the list
- logger.debug("INFO: DesignatedWaiter.run: PDP= {}"
- + " is not designated but is {} and designated PDP "
- + "has failed. standbyStatus= {}", pdp.getPdpId(),
- standbyStatus, standbyStatus);
- listOfDesignated.add(pdp);
- }
- continue; //done with this one
- }
-
- /*
- * The fourth combination of isDesignated and isCurrent
- *
- * We are not going to put any of these on the list since it appears they have failed.
-
- *
- */
- if (!pdp.isDesignated() && !isCurrent) {
- logger.debug("INFO: DesignatedWaiter.run: PDP= {} "
- + "designated= {}, current= {}, "
- + "designatedPdpHasFailed= {}, "
- + "standbyStatus= {}",pdp.getPdpId(),
- pdp.isDesignated(), isCurrent, designatedPdpHasFailed, standbyStatus);
- if (!standbyStatus.equals(StateManagement.COLD_STANDBY)) {
- //stand it down
- //disableFail it
- pdpsConnector.standDownPdp(pdp.getPdpId());
- if (pdp.getPdpId().equals(myPdp.getPdpId())) {
- /*
- * I don't actually know how this condition could
- * happen, but if it did, we would want to declare it
- * failed.
- */
- logger.debug("\n\nDesignatedWaiter.run: myPdp {} is !current and !designated, "
- + " Executing stateManagement.disableFailed()\n\n",
- myPdp.getPdpId());
- // So, we must disableFail it
- try {
- //Keep the order like this.
- //StateManagement is last since it triggers controller shutdown
- pdpsConnector.setDesignated(myPdp, false);
- myPdp.setDesignated(false);
- isDesignated = false;
- stateManagementFeature.disableFailed();
- } catch (Exception e) {
- logger.error("DesignatedWaiter.run: myPdp: {} Caught Exception attempting to "
- + "disableFail myPdp {}, message= {}",
- myPdp.getPdpId(), myPdp.getPdpId(), e);
- }
- } else { //it is remote
- logger.debug("\n\nDesignatedWaiter.run: myPdp {} is !current and !designated, "
- + " Executing stateManagement.disableFailed({})\n\n",
- myPdp.getPdpId(), pdp.getPdpId());
- // We already called standdown(pdp) which will change designated to false
- // Now we need to disableFail it to get its states in sync.
- // StandbyStatus = coldstandby
- try {
- stateManagementFeature.disableFailed(pdp.getPdpId());
- } catch (Exception e) {
- logger.error("DesignatedWaiter.run: for PDP {}"
- + " Caught Exception attempting to disableFail({})"
- + ", message=", pdp.getPdpId(), pdp.getPdpId(), e);
- }
- }
- }
- }
-
-
- } // end pdps loop
+ allPdpsFailed(pdps, listOfDesignated);
/*
* We have checked the four combinations of isDesignated and isCurrent. Where appropriate,
@@ -479,7 +231,7 @@ public class DroolsPdpsElectionHandler implements ThreadRunningChecker {
/*
- * It is possible to get here with more than one pdp designated and providingservice. This normally
+ * It is possible to get here with more than one pdp designated and providing service. This normally
* occurs when there is a race condition with multiple nodes coming up at the same time. If that is
* the case we must determine which one is the one that should be designated and which one should
* be demoted.
@@ -490,82 +242,22 @@ public class DroolsPdpsElectionHandler implements ThreadRunningChecker {
* the previously designated pdp.
*/
DroolsPdp designatedPdp = computeDesignatedPdp(listOfDesignated, mostRecentPrimary);
- if (designatedPdp != null) {
- pdpdNowActive = designatedPdp.getPdpId();
- }
if (designatedPdp == null) {
logger.warn("WARNING: DesignatedWaiter.run: No viable PDP found to be Designated. "
+ "designatedPdp still null.");
- // Just to be sure the parameters are correctly set
- myPdp.setDesignated(false);
- pdpsConnector.setDesignated(myPdp,false);
- isDesignated = false;
-
- waitTimerLastRunDate = new Date();
- logger.debug("DesignatedWaiter.run (designatedPdp == null) waitTimerLastRunDate = {}",
- waitTimerLastRunDate);
- myPdp.setUpdatedDate(waitTimerLastRunDate);
- pdpsConnector.update(myPdp);
-
+ designateNoPdp();
return;
+ }
- } else if (designatedPdp.getPdpId().equals(myPdp.getPdpId())) {
- logger.debug("DesignatedWaiter.run: designatedPdp is PDP={}", myPdp.getPdpId());
- /*
- * update function expects myPdp.isDesignated to be true.
- */
- try {
- //Keep the order like this. StateManagement is last since it triggers controller init
- myPdp.setDesignated(true);
- myPdp.setDesignatedDate(new Date());
- pdpsConnector.setDesignated(myPdp, true);
- isDesignated = true;
- String standbyStatus = stateManagementFeature.getStandbyStatus();
- if (!standbyStatus.equals(StateManagement.PROVIDING_SERVICE)) {
- /*
- * Only call promote if it is not already in the right state. Don't worry about
- * synching the lower level topic endpoint states. That is done by the
- * refreshStateAudit.
- * Note that we need to fetch the session list from 'mostRecentPrimary'
- * at this point -- soon, 'mostRecentPrimary' will be set to this host.
- */
- //this.sessions = mostRecentPrimary.getSessions();
- stateManagementFeature.promote();
- }
- } catch (Exception e) {
- logger.error("ERROR: DesignatedWaiter.run: Caught Exception attempting to promote PDP={}"
- + ", message=", myPdp.getPdpId(), e);
- myPdp.setDesignated(false);
- pdpsConnector.setDesignated(myPdp,false);
- isDesignated = false;
- //If you can't promote it, demote it
- try {
- String standbyStatus = stateManagementFeature.getStandbyStatus();
- if (!(standbyStatus.equals(StateManagement.HOT_STANDBY)
- || standbyStatus.equals(StateManagement.COLD_STANDBY))) {
- /*
- * Only call demote if it is not already in the right state. Don't worry about
- * synching the lower level topic endpoint states. That is done by the
- * refreshStateAudit.
- */
- stateManagementFeature.demote();
- }
- } catch (Exception e1) {
- logger.error("ERROR: DesignatedWaiter.run: Caught StandbyStatusException "
- + "attempting to promote then demote PDP={}, message=",
- myPdp.getPdpId(), e1);
- }
-
- }
- waitTimerLastRunDate = new Date();
- logger.debug("DesignatedWaiter.run (designatedPdp.getPdpId().equals(myPdp.getPdpId())) "
- + "waitTimerLastRunDate = " + waitTimerLastRunDate);
- myPdp.setUpdatedDate(waitTimerLastRunDate);
- pdpsConnector.update(myPdp);
+ pdpdNowActive = designatedPdp.getPdpId();
+ if (pdpdNowActive.equals(myPdp.getPdpId())) {
+ logger.debug("DesignatedWaiter.run: designatedPdp is PDP={}", myPdp.getPdpId());
+ designateMyPdp();
return;
}
+
isDesignated = false;
} // end synchronized
@@ -583,6 +275,350 @@ public class DroolsPdpsElectionHandler implements ThreadRunningChecker {
logger.error("DesignatedWaiter.run caught an unexpected exception: ", e);
}
} // end run
+
+ private void allPdpsFailed(Collection<DroolsPdp> pdps, List<DroolsPdp> listOfDesignated) {
+ boolean designatedPdpHasFailed = pdpsConnector.hasDesignatedPdpFailed(pdps);
+ logger.debug("DesignatedWaiter.run: designatedPdpHasFailed= {}", designatedPdpHasFailed);
+ for (DroolsPdp pdp : pdps) {
+ logger.debug("DesignatedWaiter.run: evaluating pdp ID: {}", pdp.getPdpId());
+
+ /*
+ * Note: side effect of isPdpCurrent is that any stale but
+ * designated PDPs will be marked as un-designated.
+ */
+ boolean isCurrent = pdpsConnector.isPdpCurrent(pdp);
+
+ /*
+ * We can't use stateManagement.getStandbyStatus() here, because
+ * we need the standbyStatus, not for this PDP, but for the PDP
+ * being processed by this loop iteration.
+ */
+ String standbyStatus = stateManagementFeature.getStandbyStatus(pdp.getPdpId());
+ if (standbyStatus == null) {
+ // Treat this case as a cold standby -- if we
+ // abort here, no sessions will be created in a
+ // single-node test environment.
+ standbyStatus = StateManagement.COLD_STANDBY;
+ }
+ logger.debug("DesignatedWaiter.run: PDP= {}, isCurrent= {}", pdp.getPdpId(), isCurrent);
+
+ adjustPdp(pdp, isCurrent, designatedPdpHasFailed, standbyStatus, listOfDesignated);
+
+
+ } // end pdps loop
+ }
+
+ private void adjustPdp(DroolsPdp pdp, boolean isCurrent, boolean designatedPdpHasFailed, String standbyStatus,
+ List<DroolsPdp> listOfDesignated) {
+ /*
+ * There are 4 combinations of isDesignated and isCurrent. We will examine each one in-turn
+ * and evaluate the each pdp in the list of pdps against each combination.
+ */
+ if (pdp.isDesignated()) {
+ /*
+ * This is the first combination of isDesignated and isCurrent
+ */
+ if (isCurrent) {
+ pdpDesignatedCurrent(pdp, standbyStatus, listOfDesignated);
+
+ /*
+ * The second combination of isDesignated and isCurrent
+ *
+ * PDP is designated but not current; it has failed.
+ * So we stand it down (it doesn't matter what
+ * its standbyStatus is). None of these go on the list.
+ */
+ } else {
+ logger.debug("INFO: DesignatedWaiter.run: PDP= {} is currently "
+ + "designated but is not current; "
+ + "it has failed. Standing down. standbyStatus= {}",
+ pdp.getPdpId(), standbyStatus);
+ pdpDesignatedNotCurrent(pdp);
+ }
+
+ } else {
+ // NOT designated
+
+
+ /*
+ * The third combination of isDesignated and isCurrent
+ * /*
+ * If a PDP is not currently designated but is providing service
+ * (erroneous, but recoverable) or hot standby
+ * we can add it to the list of possible designated if all the designated have failed
+ */
+ if (isCurrent) {
+ pdpNotDesignatedCurrent(pdp, designatedPdpHasFailed, standbyStatus,
+ listOfDesignated);
+
+ /*
+ * The fourth combination of isDesignated and isCurrent
+ *
+ * We are not going to put any of these on the list since it appears they have failed.
+ *
+ */
+ } else {
+ logger.debug("INFO: DesignatedWaiter.run: PDP= {} "
+ + "designated= {}, current= {}, "
+ + "designatedPdpHasFailed= {}, "
+ + "standbyStatus= {}",pdp.getPdpId(),
+ pdp.isDesignated(), false, designatedPdpHasFailed, standbyStatus);
+ pdpNotDesignatedNotCurrent(pdp, standbyStatus);
+ }
+ }
+ }
+
+ private void pdpDesignatedCurrent(DroolsPdp pdp, String standbyStatus, List<DroolsPdp> listOfDesignated) {
+ //It is current, but it could have a standbystatus=coldstandby / hotstandby
+ //If so, we need to stand it down and demote it
+ if (!standbyStatus.equals(StateManagement.PROVIDING_SERVICE)) {
+ if (pdp.getPdpId().equals(myPdp.getPdpId())) {
+ logger.debug("\n\nDesignatedWaiter.run: myPdp {} is current and designated, "
+ + "butstandbystatus is not providingservice. "
+ + " Executing stateManagement.demote()" + "\n\n", myPdp.getPdpId());
+ // So, we must demote it
+ try {
+ demoteMyPdp(pdp, standbyStatus);
+ } catch (Exception e) {
+ logger.error("DesignatedWaiter.run: myPdp: {} "
+ + "Caught Exception attempting to demote myPdp,"
+ + "message= {}", myPdp.getPdpId(), e);
+ }
+ } else {
+ // Don't demote a remote PDP that is current. It should catch itself
+ logger.debug("\n\nDesignatedWaiter.run: myPdp {} is current and designated, "
+ + "but standbystatus is not providingservice. "
+ + " Cannot execute stateManagement.demote() "
+ + "since it it is not myPdp\n\n",
+ myPdp.getPdpId());
+ }
+
+ } else {
+ // If we get here, it is ok to be on the list
+ logger.debug("DesignatedWaiter.run: PDP= {} is designated, "
+ + "current and {} Noting PDP as "
+ + "designated, standbyStatus= {}",
+ pdp.getPdpId(), standbyStatus, standbyStatus);
+ listOfDesignated.add(pdp);
+ }
+ }
+
+ private void demoteMyPdp(DroolsPdp pdp, String standbyStatus) throws Exception {
+ //Keep the order like this. StateManagement is last since it
+ //triggers controller shutdown
+ //This will change isDesignated and it can enter another if(combination) below
+ pdpsConnector.standDownPdp(pdp.getPdpId());
+ myPdp.setDesignated(false);
+ isDesignated = false;
+ if (!(standbyStatus.equals(StateManagement.HOT_STANDBY)
+ || standbyStatus.equals(StateManagement.COLD_STANDBY))) {
+ /*
+ * Only demote it if it appears it has not already been demoted. Don't worry
+ * about synching with the topic endpoint states. That is done by the
+ * refreshStateAudit
+ */
+ stateManagementFeature.demote();
+ }
+ }
+
+ private void pdpDesignatedNotCurrent(DroolsPdp pdp) {
+ /*
+ * Changes designated to 0 but it is still potentially providing service
+ * Will affect isDesignated, so, it can enter an if(combination) below
+ */
+ pdpsConnector.standDownPdp(pdp.getPdpId());
+
+ //need to change standbystatus to coldstandby
+ if (pdp.getPdpId().equals(myPdp.getPdpId())) {
+ logger.debug("\n\nDesignatedWaiter.run: myPdp {} is not Current. "
+ + " Executing stateManagement.disableFailed()\n\n", myPdp.getPdpId());
+ // We found that myPdp is designated but not current
+ // So, we must cause it to disableFail
+ try {
+ myPdp.setDesignated(false);
+ pdpsConnector.setDesignated(myPdp, false);
+ isDesignated = false;
+ stateManagementFeature.disableFailed();
+ } catch (Exception e) {
+ logger.error("DesignatedWaiter.run: myPdp: {} Caught Exception "
+ + "attempting to disableFail myPdp {}, message= {}",
+ myPdp.getPdpId(), myPdp.getPdpId(), e);
+ }
+ } else { //it is a remote PDP that is failed
+ logger.debug("\n\nDesignatedWaiter.run: PDP {} is not Current. "
+ + " Executing stateManagement.disableFailed(otherResourceName)\n\n",
+ pdp.getPdpId() );
+ // We found a PDP is designated but not current
+ // We already called standdown(pdp) which will change designated to false
+ // Now we need to disableFail it to get its states in synch. The standbyStatus
+ // should equal coldstandby
+ try {
+ stateManagementFeature.disableFailed(pdp.getPdpId());
+ } catch (Exception e) {
+ logger.error("DesignatedWaiter.run: for PDP {} Caught Exception attempting to "
+ + "disableFail({}), message= {}",
+ pdp.getPdpId(), pdp.getPdpId(), e);
+ }
+
+ }
+ }
+
+ private void pdpNotDesignatedCurrent(DroolsPdp pdp, boolean designatedPdpHasFailed, String standbyStatus,
+ List<DroolsPdp> listOfDesignated) {
+ if (!(StateManagement.HOT_STANDBY.equals(standbyStatus)
+ || StateManagement.COLD_STANDBY.equals(standbyStatus))) {
+ logger.debug("\n\nDesignatedWaiter.run: PDP {}"
+ + " is NOT designated but IS current and"
+ + " has a standbystatus= {}", pdp.getPdpId(), standbyStatus);
+ // Since it is current, we assume it can adjust its own state.
+ // We will demote if it is myPdp
+ if (pdp.getPdpId().equals(myPdp.getPdpId())) {
+ //demote it
+ logger.debug("DesignatedWaiter.run: PDP {} going to "
+ + "setDesignated = false and calling stateManagement.demote",
+ pdp.getPdpId());
+ try {
+ //Keep the order like this.
+ //StateManagement is last since it triggers controller shutdown
+ pdpsConnector.setDesignated(myPdp, false);
+ myPdp.setDesignated(false);
+ isDesignated = false;
+ //This is definitely not a redundant call.
+ //It is attempting to correct a problem
+ stateManagementFeature.demote();
+ //recheck the standbystatus
+ standbyStatus = stateManagementFeature.getStandbyStatus(pdp.getPdpId());
+ } catch (Exception e) {
+ logger.error("DesignatedWaiter.run: myPdp: {} Caught Exception "
+ + "attempting to demote myPdp {}, message = {}", myPdp.getPdpId(),
+ myPdp.getPdpId(), e);
+ }
+
+ }
+ }
+ if (StateManagement.HOT_STANDBY.equals(standbyStatus) && designatedPdpHasFailed) {
+ //add it to the list
+ logger.debug("INFO: DesignatedWaiter.run: PDP= {}"
+ + " is not designated but is {} and designated PDP "
+ + "has failed. standbyStatus= {}", pdp.getPdpId(),
+ standbyStatus, standbyStatus);
+ listOfDesignated.add(pdp);
+ }
+ }
+
+ private void pdpNotDesignatedNotCurrent(DroolsPdp pdp, String standbyStatus) {
+ if (StateManagement.COLD_STANDBY.equals(standbyStatus)) {
+ return;
+ }
+
+ //stand it down
+ //disableFail it
+ pdpsConnector.standDownPdp(pdp.getPdpId());
+ if (pdp.getPdpId().equals(myPdp.getPdpId())) {
+ /*
+ * I don't actually know how this condition could
+ * happen, but if it did, we would want to declare it
+ * failed.
+ */
+ logger.debug("\n\nDesignatedWaiter.run: myPdp {} is !current and !designated, "
+ + " Executing stateManagement.disableFailed()\n\n",
+ myPdp.getPdpId());
+ // So, we must disableFail it
+ try {
+ //Keep the order like this.
+ //StateManagement is last since it triggers controller shutdown
+ pdpsConnector.setDesignated(myPdp, false);
+ myPdp.setDesignated(false);
+ isDesignated = false;
+ stateManagementFeature.disableFailed();
+ } catch (Exception e) {
+ logger.error("DesignatedWaiter.run: myPdp: {} Caught Exception attempting to "
+ + "disableFail myPdp {}, message= {}",
+ myPdp.getPdpId(), myPdp.getPdpId(), e);
+ }
+ } else { //it is remote
+ logger.debug("\n\nDesignatedWaiter.run: myPdp {} is !current and !designated, "
+ + " Executing stateManagement.disableFailed({})\n\n",
+ myPdp.getPdpId(), pdp.getPdpId());
+ // We already called standdown(pdp) which will change designated to false
+ // Now we need to disableFail it to get its states in sync.
+ // StandbyStatus = coldstandby
+ try {
+ stateManagementFeature.disableFailed(pdp.getPdpId());
+ } catch (Exception e) {
+ logger.error("DesignatedWaiter.run: for PDP {}"
+ + " Caught Exception attempting to disableFail({})"
+ + ", message=", pdp.getPdpId(), pdp.getPdpId(), e);
+ }
+ }
+ }
+
+ private void designateNoPdp() {
+ // Just to be sure the parameters are correctly set
+ myPdp.setDesignated(false);
+ pdpsConnector.setDesignated(myPdp,false);
+ isDesignated = false;
+
+ waitTimerLastRunDate = new Date();
+ logger.debug("DesignatedWaiter.run (designatedPdp == null) waitTimerLastRunDate = {}",
+ waitTimerLastRunDate);
+ myPdp.setUpdatedDate(waitTimerLastRunDate);
+ pdpsConnector.update(myPdp);
+ }
+
+ private void designateMyPdp() {
+ /*
+ * update function expects myPdp.isDesignated to be true.
+ */
+ try {
+ //Keep the order like this. StateManagement is last since it triggers controller init
+ myPdp.setDesignated(true);
+ myPdp.setDesignatedDate(new Date());
+ pdpsConnector.setDesignated(myPdp, true);
+ isDesignated = true;
+ String standbyStatus = stateManagementFeature.getStandbyStatus();
+ if (!standbyStatus.equals(StateManagement.PROVIDING_SERVICE)) {
+ /*
+ * Only call promote if it is not already in the right state. Don't worry about
+ * synching the lower level topic endpoint states. That is done by the
+ * refreshStateAudit.
+ * Note that we need to fetch the session list from 'mostRecentPrimary'
+ * at this point -- soon, 'mostRecentPrimary' will be set to this host.
+ */
+ //this.sessions = mostRecentPrimary.getSessions();
+ stateManagementFeature.promote();
+ }
+ } catch (Exception e) {
+ logger.error("ERROR: DesignatedWaiter.run: Caught Exception attempting to promote PDP={}"
+ + ", message=", myPdp.getPdpId(), e);
+ myPdp.setDesignated(false);
+ pdpsConnector.setDesignated(myPdp,false);
+ isDesignated = false;
+ //If you can't promote it, demote it
+ try {
+ String standbyStatus = stateManagementFeature.getStandbyStatus();
+ if (!(standbyStatus.equals(StateManagement.HOT_STANDBY)
+ || standbyStatus.equals(StateManagement.COLD_STANDBY))) {
+ /*
+ * Only call demote if it is not already in the right state. Don't worry about
+ * synching the lower level topic endpoint states. That is done by the
+ * refreshStateAudit.
+ */
+ stateManagementFeature.demote();
+ }
+ } catch (Exception e1) {
+ logger.error("ERROR: DesignatedWaiter.run: Caught StandbyStatusException "
+ + "attempting to promote then demote PDP={}, message=",
+ myPdp.getPdpId(), e1);
+ }
+
+ }
+ waitTimerLastRunDate = new Date();
+ logger.debug("DesignatedWaiter.run (designatedPdp.getPdpId().equals(myPdp.getPdpId())) "
+ + "waitTimerLastRunDate = " + waitTimerLastRunDate);
+ myPdp.setUpdatedDate(waitTimerLastRunDate);
+ pdpsConnector.update(myPdp);
+ }
}
/**
@@ -621,53 +657,27 @@ public class DroolsPdpsElectionHandler implements ThreadRunningChecker {
* @return drools pdp object
*/
public DroolsPdp computeMostRecentPrimary(Collection<DroolsPdp> pdps, List<DroolsPdp> listOfDesignated) {
- boolean containsDesignated = false;
- for (DroolsPdp pdp : listOfDesignated) {
- if (pdp.isDesignated()) {
- containsDesignated = true;
- }
- }
+ boolean containsDesignated = listOfDesignated.stream().anyMatch(DroolsPdp::isDesignated);
+
DroolsPdp mostRecentPrimary = new DroolsPdpImpl(null, true, 1, new Date(0));
mostRecentPrimary.setSite(null);
logger.debug("DesignatedWaiter.run listOfDesignated.size() = {}", listOfDesignated.size());
+
if (listOfDesignated.size() <= 1) {
logger.debug("DesignatedWainter.run: listOfDesignated.size <=1");
//Only one or none is designated or hot standby. Choose the latest designated date
- for (DroolsPdp pdp : pdps) {
- logger.debug("DesignatedWaiter.run pdp = {}"
- + " pdp.getDesignatedDate() = {}",
- pdp.getPdpId(), pdp.getDesignatedDate());
- if (pdp.getDesignatedDate().compareTo(mostRecentPrimary.getDesignatedDate()) > 0) {
- mostRecentPrimary = pdp;
- logger.debug(RUN_PRIMARY_MSG, mostRecentPrimary.getPdpId());
- }
- }
+ mostRecentPrimary = getLatestDesignated(pdps, mostRecentPrimary);
+
} else if (listOfDesignated.size() == pdps.size()) {
logger.debug("DesignatedWainter.run: listOfDesignated.size = pdps.size() which is {}", pdps.size());
//They are all designated or all hot standby.
- mostRecentPrimary = null;
- for (DroolsPdp pdp : pdps) {
- if (mostRecentPrimary == null) {
- mostRecentPrimary = pdp;
- continue;
- }
- if (containsDesignated) { //Choose the site of the first designated date
- if (pdp.getDesignatedDate().compareTo(mostRecentPrimary.getDesignatedDate()) < 0) {
- mostRecentPrimary = pdp;
- logger.debug(RUN_PRIMARY_MSG, mostRecentPrimary.getPdpId());
- }
- } else { //Choose the site with the latest designated date
- if (pdp.getDesignatedDate().compareTo(mostRecentPrimary.getDesignatedDate()) > 0) {
- mostRecentPrimary = pdp;
- logger.debug(RUN_PRIMARY_MSG, mostRecentPrimary.getPdpId());
- }
- }
- }
+ mostRecentPrimary = getBestDesignated(pdps, containsDesignated);
+
} else {
logger.debug("DesignatedWainter.run: Some but not all are designated or hot standby. ");
+ logger.debug("DesignatedWainter.run: containsDesignated = {}", containsDesignated);
//Some but not all are designated or hot standby.
if (containsDesignated) {
- logger.debug("DesignatedWainter.run: containsDesignated = {}", containsDesignated);
/*
* The list only contains designated. This is a problem. It is most likely a race
* condition that resulted in two thinking they should be designated. Choose the
@@ -675,29 +685,66 @@ public class DroolsPdpsElectionHandler implements ThreadRunningChecker {
* This should be the site that had the last designation before this race condition
* occurred.
*/
- for (DroolsPdp pdp : pdps) {
- if (listOfDesignated.contains(pdp)) {
- continue; //Don't consider this entry
- }
- if (pdp.getDesignatedDate().compareTo(mostRecentPrimary.getDesignatedDate()) > 0) {
- mostRecentPrimary = pdp;
- logger.debug(RUN_PRIMARY_MSG, mostRecentPrimary.getPdpId());
- }
- }
+ mostRecentPrimary = getLatestUndesignated(pdps, mostRecentPrimary, listOfDesignated);
+
} else {
- logger.debug("DesignatedWainter.run: containsDesignated = {}", containsDesignated);
//The list only contains hot standby. Choose the site of the latest designated date
- for (DroolsPdp pdp : pdps) {
- if (pdp.getDesignatedDate().compareTo(mostRecentPrimary.getDesignatedDate()) > 0) {
- mostRecentPrimary = pdp;
- logger.debug(RUN_PRIMARY_MSG, mostRecentPrimary.getPdpId());
- }
+ mostRecentPrimary = getLatestDesignated(pdps, mostRecentPrimary);
+ }
+ }
+ return mostRecentPrimary;
+ }
+
+ private DroolsPdp getBestDesignated(Collection<DroolsPdp> pdps, boolean containsDesignated) {
+ DroolsPdp mostRecentPrimary;
+ mostRecentPrimary = null;
+ for (DroolsPdp pdp : pdps) {
+ if (mostRecentPrimary == null) {
+ mostRecentPrimary = pdp;
+ continue;
+ }
+ if (containsDesignated) { //Choose the site of the first designated date
+ if (pdp.getDesignatedDate().compareTo(mostRecentPrimary.getDesignatedDate()) < 0) {
+ mostRecentPrimary = pdp;
+ logger.debug(RUN_PRIMARY_MSG, mostRecentPrimary.getPdpId());
+ }
+ } else { //Choose the site with the latest designated date
+ if (pdp.getDesignatedDate().compareTo(mostRecentPrimary.getDesignatedDate()) > 0) {
+ mostRecentPrimary = pdp;
+ logger.debug(RUN_PRIMARY_MSG, mostRecentPrimary.getPdpId());
}
}
}
return mostRecentPrimary;
}
+ private DroolsPdp getLatestUndesignated(Collection<DroolsPdp> pdps, DroolsPdp mostRecentPrimary,
+ List<DroolsPdp> listOfDesignated) {
+ for (DroolsPdp pdp : pdps) {
+ if (listOfDesignated.contains(pdp)) {
+ continue; //Don't consider this entry
+ }
+ if (pdp.getDesignatedDate().compareTo(mostRecentPrimary.getDesignatedDate()) > 0) {
+ mostRecentPrimary = pdp;
+ logger.debug(RUN_PRIMARY_MSG, mostRecentPrimary.getPdpId());
+ }
+ }
+ return mostRecentPrimary;
+ }
+
+ private DroolsPdp getLatestDesignated(Collection<DroolsPdp> pdps, DroolsPdp mostRecentPrimary) {
+ for (DroolsPdp pdp : pdps) {
+ logger.debug("DesignatedWaiter.run pdp = {}"
+ + " pdp.getDesignatedDate() = {}",
+ pdp.getPdpId(), pdp.getDesignatedDate());
+ if (pdp.getDesignatedDate().compareTo(mostRecentPrimary.getDesignatedDate()) > 0) {
+ mostRecentPrimary = pdp;
+ logger.debug(RUN_PRIMARY_MSG, mostRecentPrimary.getPdpId());
+ }
+ }
+ return mostRecentPrimary;
+ }
+
/**
* Compue designated pdp.
*
@@ -706,125 +753,148 @@ public class DroolsPdpsElectionHandler implements ThreadRunningChecker {
* @return drools pdp object
*/
public DroolsPdp computeDesignatedPdp(List<DroolsPdp> listOfDesignated, DroolsPdp mostRecentPrimary) {
- DroolsPdp designatedPdp = null;
- DroolsPdp lowestPriorityPdp = null;
- if (listOfDesignated.size() > 1) {
- logger.debug("DesignatedWaiter.run: myPdp: {} listOfDesignated.size(): {}", myPdp.getPdpId(),
- listOfDesignated.size());
- DroolsPdp rejectedPdp = null;
- DroolsPdp lowestPrioritySameSite = null;
- DroolsPdp lowestPriorityDifferentSite = null;
- for (DroolsPdp pdp : listOfDesignated) {
- // We need to determine if another PDP is the lowest priority
- if (nullSafeEquals(pdp.getSite(),mostRecentPrimary.getSite())) {
- if (lowestPrioritySameSite == null) {
- if (lowestPriorityDifferentSite != null) {
- rejectedPdp = lowestPriorityDifferentSite;
- }
- lowestPrioritySameSite = pdp;
- } else {
- if (pdp.getPdpId().equals((lowestPrioritySameSite.getPdpId()))) {
- continue;//nothing to compare
- }
- if (pdp.comparePriority(lowestPrioritySameSite) < 0) {
- logger.debug("\nDesignatedWaiter.run: myPdp {} listOfDesignated pdp ID: {}"
- + " has lower priority than pdp ID: {}",myPdp.getPdpId(), pdp.getPdpId(),
- lowestPrioritySameSite.getPdpId());
- //we need to reject lowestPrioritySameSite
- rejectedPdp = lowestPrioritySameSite;
- lowestPrioritySameSite = pdp;
- } else {
- //we need to reject pdp and keep lowestPrioritySameSite
- logger.debug("\nDesignatedWaiter.run: myPdp {} listOfDesignated pdp ID: {} "
- + " has higher priority than pdp ID: {}", myPdp.getPdpId(),pdp.getPdpId(),
- lowestPrioritySameSite.getPdpId());
- rejectedPdp = pdp;
- }
- }
- } else {
- if (lowestPrioritySameSite != null) {
- //if we already have a candidate for same site, we don't want to bother with different sites
- rejectedPdp = pdp;
- } else {
- if (lowestPriorityDifferentSite == null) {
- lowestPriorityDifferentSite = pdp;
- continue;
- }
- if (pdp.getPdpId().equals((lowestPriorityDifferentSite.getPdpId()))) {
- continue;//nothing to compare
- }
- if (pdp.comparePriority(lowestPriorityDifferentSite) < 0) {
- logger.debug("\nDesignatedWaiter.run: myPdp {} listOfDesignated pdp ID: {}"
- + " has lower priority than pdp ID: {}", myPdp.getPdpId(), pdp.getPdpId(),
- lowestPriorityDifferentSite.getPdpId());
- //we need to reject lowestPriorityDifferentSite
- rejectedPdp = lowestPriorityDifferentSite;
- lowestPriorityDifferentSite = pdp;
- } else {
- //we need to reject pdp and keep lowestPriorityDifferentSite
- logger.debug("\nDesignatedWaiter.run: myPdp {} listOfDesignated pdp ID: {}"
- + " has higher priority than pdp ID: {}", myPdp.getPdpId(), pdp.getPdpId(),
- lowestPriorityDifferentSite.getPdpId());
- rejectedPdp = pdp;
- }
- }
+ if (listOfDesignated.isEmpty()) {
+ logger.debug("\nDesignatedWaiter.run: myPdp: {} listOfDesignated is: EMPTY.", myPdp.getPdpId());
+ return null;
+ }
+
+ if (listOfDesignated.size() == 1) {
+ logger.debug("\nDesignatedWaiter.run: myPdp: {} listOfDesignated "
+ + "has ONE entry. PDP ID: {}", myPdp.getPdpId(), listOfDesignated.get(0).getPdpId());
+ return listOfDesignated.get(0);
+ }
+
+ logger.debug("DesignatedWaiter.run: myPdp: {} listOfDesignated.size(): {}", myPdp.getPdpId(),
+ listOfDesignated.size());
+ DesignatedData data = new DesignatedData();
+ for (DroolsPdp pdp : listOfDesignated) {
+ DroolsPdp rejectedPdp;
+
+ // We need to determine if another PDP is the lowest priority
+ if (nullSafeEquals(pdp.getSite(), mostRecentPrimary.getSite())) {
+ rejectedPdp = data.compareSameSite(pdp);
+ } else {
+ rejectedPdp = data.compareDifferentSite(pdp);
+ }
+ // If the rejectedPdp is myPdp, we need to stand it down and demote it. Each pdp is responsible
+ // for demoting itself
+ if (rejectedPdp != null && nullSafeEquals(rejectedPdp.getPdpId(),myPdp.getPdpId())) {
+ logger.debug("\n\nDesignatedWaiter.run: myPdp: {} listOfDesignated myPdp ID: {}"
+ + " is NOT the lowest priority. Executing stateManagement.demote()\n\n",
+ myPdp.getPdpId(),
+ myPdp.getPdpId());
+ // We found that myPdp is on the listOfDesignated and it is not the lowest priority
+ // So, we must demote it
+ demoteMyPdp();
+ }
+ } //end: for(DroolsPdp pdp : listOfDesignated)
+
+ DroolsPdp lowestPriorityPdp = data.getLowestPriority();
+
+ //now we have a valid value for lowestPriorityPdp
+ logger.debug("\n\nDesignatedWaiter.run: myPdp: {} listOfDesignated "
+ + "found the LOWEST priority pdp ID: {} "
+ + " It is now the designatedPpd from the perspective of myPdp ID: {} \n\n",
+ myPdp.getPdpId(), lowestPriorityPdp.getPdpId(), myPdp);
+ return lowestPriorityPdp;
+
+ }
+
+ private class DesignatedData {
+ private DroolsPdp lowestPrioritySameSite = null;
+ private DroolsPdp lowestPriorityDifferentSite = null;
+
+ private DroolsPdp compareSameSite(DroolsPdp pdp) {
+ if (lowestPrioritySameSite == null) {
+ if (lowestPriorityDifferentSite != null) {
+ //we need to reject lowestPriorityDifferentSite
+ DroolsPdp rejectedPdp = lowestPriorityDifferentSite;
+ lowestPriorityDifferentSite = pdp;
+ return rejectedPdp;
}
- // If the rejectedPdp is myPdp, we need to stand it down and demote it. Each pdp is responsible
- // for demoting itself
- if (rejectedPdp != null && nullSafeEquals(rejectedPdp.getPdpId(),myPdp.getPdpId())) {
- logger.debug("\n\nDesignatedWaiter.run: myPdp: {} listOfDesignated myPdp ID: {}"
- + " is NOT the lowest priority. Executing stateManagement.demote()\n\n",
- myPdp.getPdpId(),
- myPdp.getPdpId());
- // We found that myPdp is on the listOfDesignated and it is not the lowest priority
- // So, we must demote it
- try {
- //Keep the order like this. StateManagement is last since it triggers controller shutdown
- myPdp.setDesignated(false);
- pdpsConnector.setDesignated(myPdp, false);
- isDesignated = false;
- String standbyStatus = stateManagementFeature.getStandbyStatus();
- if (!(standbyStatus.equals(StateManagement.HOT_STANDBY)
- || standbyStatus.equals(StateManagement.COLD_STANDBY))) {
- /*
- * Only call demote if it is not already in the right state. Don't worry about
- * synching the lower level topic endpoint states. That is done by the
- * refreshStateAudit.
- */
- stateManagementFeature.demote();
- }
- } catch (Exception e) {
- myPdp.setDesignated(false);
- pdpsConnector.setDesignated(myPdp, false);
- isDesignated = false;
- logger.error("DesignatedWaiter.run: myPdp: {} Caught Exception attempting to "
- + "demote myPdp {} myPdp.getPdpId(), message= {}", myPdp.getPdpId(),
- e);
- }
+ lowestPrioritySameSite = pdp;
+ return null;
+ } else {
+ if (pdp.getPdpId().equals((lowestPrioritySameSite.getPdpId()))) {
+ return null;//nothing to compare
}
- } //end: for(DroolsPdp pdp : listOfDesignated)
+ if (pdp.comparePriority(lowestPrioritySameSite) < 0) {
+ logger.debug("\nDesignatedWaiter.run: myPdp {} listOfDesignated pdp ID: {}"
+ + " has lower priority than pdp ID: {}",myPdp.getPdpId(), pdp.getPdpId(),
+ lowestPrioritySameSite.getPdpId());
+ //we need to reject lowestPrioritySameSite
+ DroolsPdp rejectedPdp = lowestPrioritySameSite;
+ lowestPrioritySameSite = pdp;
+ return rejectedPdp;
+ } else {
+ //we need to reject pdp and keep lowestPrioritySameSite
+ logger.debug("\nDesignatedWaiter.run: myPdp {} listOfDesignated pdp ID: {} "
+ + " has higher priority than pdp ID: {}", myPdp.getPdpId(),pdp.getPdpId(),
+ lowestPrioritySameSite.getPdpId());
+ return pdp;
+ }
+ }
+ }
+
+ private DroolsPdp compareDifferentSite(DroolsPdp pdp) {
if (lowestPrioritySameSite != null) {
- lowestPriorityPdp = lowestPrioritySameSite;
+ //if we already have a candidate for same site, we don't want to bother with different sites
+ return pdp;
} else {
- lowestPriorityPdp = lowestPriorityDifferentSite;
+ if (lowestPriorityDifferentSite == null) {
+ lowestPriorityDifferentSite = pdp;
+ return null;
+ }
+ if (pdp.getPdpId().equals((lowestPriorityDifferentSite.getPdpId()))) {
+ return null;//nothing to compare
+ }
+ if (pdp.comparePriority(lowestPriorityDifferentSite) < 0) {
+ logger.debug("\nDesignatedWaiter.run: myPdp {} listOfDesignated pdp ID: {}"
+ + " has lower priority than pdp ID: {}", myPdp.getPdpId(), pdp.getPdpId(),
+ lowestPriorityDifferentSite.getPdpId());
+ //we need to reject lowestPriorityDifferentSite
+ DroolsPdp rejectedPdp = lowestPriorityDifferentSite;
+ lowestPriorityDifferentSite = pdp;
+ return rejectedPdp;
+ } else {
+ //we need to reject pdp and keep lowestPriorityDifferentSite
+ logger.debug("\nDesignatedWaiter.run: myPdp {} listOfDesignated pdp ID: {}"
+ + " has higher priority than pdp ID: {}", myPdp.getPdpId(), pdp.getPdpId(),
+ lowestPriorityDifferentSite.getPdpId());
+ return pdp;
+ }
}
- //now we have a valid value for lowestPriorityPdp
- logger.debug("\n\nDesignatedWaiter.run: myPdp: {} listOfDesignated "
- + "found the LOWEST priority pdp ID: {} "
- + " It is now the designatedPpd from the perspective of myPdp ID: {} \n\n",
- myPdp.getPdpId(), lowestPriorityPdp.getPdpId(), myPdp);
- designatedPdp = lowestPriorityPdp;
-
- } else if (listOfDesignated.isEmpty()) {
- logger.debug("\nDesignatedWaiter.run: myPdp: {} listOfDesignated is: EMPTY.", myPdp.getPdpId());
- designatedPdp = null;
- } else { //only one in listOfDesignated
- logger.debug("\nDesignatedWaiter.run: myPdp: {} listOfDesignated "
- + "has ONE entry. PDP ID: {}", myPdp.getPdpId(), listOfDesignated.get(0).getPdpId());
- designatedPdp = listOfDesignated.get(0);
}
- return designatedPdp;
+ private DroolsPdp getLowestPriority() {
+ return (lowestPrioritySameSite != null ? lowestPrioritySameSite : lowestPriorityDifferentSite);
+ }
+ }
+
+ private void demoteMyPdp() {
+ try {
+ //Keep the order like this. StateManagement is last since it triggers controller shutdown
+ myPdp.setDesignated(false);
+ pdpsConnector.setDesignated(myPdp, false);
+ isDesignated = false;
+ String standbyStatus = stateManagementFeature.getStandbyStatus();
+ if (!(standbyStatus.equals(StateManagement.HOT_STANDBY)
+ || standbyStatus.equals(StateManagement.COLD_STANDBY))) {
+ /*
+ * Only call demote if it is not already in the right state. Don't worry about
+ * synching the lower level topic endpoint states. That is done by the
+ * refreshStateAudit.
+ */
+ stateManagementFeature.demote();
+ }
+ } catch (Exception e) {
+ myPdp.setDesignated(false);
+ pdpsConnector.setDesignated(myPdp, false);
+ isDesignated = false;
+ logger.error("DesignatedWaiter.run: myPdp: {} Caught Exception attempting to "
+ + "demote myPdp {} myPdp.getPdpId(), message= {}", myPdp.getPdpId(),
+ e);
+ }
}
private class TimerUpdateClass extends TimerTask {
diff --git a/feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/JpaDroolsPdpsConnector.java b/feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/JpaDroolsPdpsConnector.java
index 078c891f..ed53f55c 100644
--- a/feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/JpaDroolsPdpsConnector.java
+++ b/feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/JpaDroolsPdpsConnector.java
@@ -61,18 +61,19 @@ public class JpaDroolsPdpsConnector implements DroolsPdpsConnector {
.setFlushMode(FlushModeType.COMMIT).getResultList();
LinkedList<DroolsPdp> droolsPdpsReturnList = new LinkedList<>();
for (Object o : droolsPdpsList) {
- if (o instanceof DroolsPdp) {
- //Make sure it is not a cached version
- em.refresh((DroolsPdpEntity)o);
- droolsPdpsReturnList.add((DroolsPdp)o);
- if (logger.isDebugEnabled()) {
- DroolsPdp droolsPdp = (DroolsPdp)o;
- logger.debug("getDroolsPdps: PDP= {}"
- + ", isDesignated= {}"
- + ", updatedDate= {}"
- + ", priority= {}", droolsPdp.getPdpId(), droolsPdp.isDesignated(),
- droolsPdp.getUpdatedDate(), droolsPdp.getPriority());
- }
+ if (!(o instanceof DroolsPdp)) {
+ continue;
+ }
+ //Make sure it is not a cached version
+ DroolsPdp droolsPdp = (DroolsPdp)o;
+ em.refresh(droolsPdp);
+ droolsPdpsReturnList.add(droolsPdp);
+ if (logger.isDebugEnabled()) {
+ logger.debug("getDroolsPdps: PDP= {}"
+ + ", isDesignated= {}"
+ + ", updatedDate= {}"
+ + ", priority= {}", droolsPdp.getPdpId(), droolsPdp.isDesignated(),
+ droolsPdp.getUpdatedDate(), droolsPdp.getPriority());
}
}
try {
@@ -233,14 +234,7 @@ public class JpaDroolsPdpsConnector implements DroolsPdpsConnector {
+ " found, designated= {}"
+ ", setting to {}", pdp.getPdpId(), droolsPdpEntity.isDesignated(),
designated);
- droolsPdpEntity.setDesignated(designated);
- if (designated) {
- em.refresh(droolsPdpEntity); //make sure we get the DB value
- if (!droolsPdpEntity.isDesignated()) {
- droolsPdpEntity.setDesignatedDate(new Date());
- }
-
- }
+ setPdpDesignation(em, droolsPdpEntity, designated);
em.getTransaction().commit();
} else {
logger.error("setDesignated: PDP={}"
@@ -256,6 +250,17 @@ public class JpaDroolsPdpsConnector implements DroolsPdpsConnector {
}
+ private void setPdpDesignation(EntityManager em, DroolsPdpEntity droolsPdpEntity, boolean designated) {
+ droolsPdpEntity.setDesignated(designated);
+ if (designated) {
+ em.refresh(droolsPdpEntity); //make sure we get the DB value
+ if (!droolsPdpEntity.isDesignated()) {
+ droolsPdpEntity.setDesignatedDate(new Date());
+ }
+
+ }
+ }
+
@Override
public void standDownPdp(String pdpId) {
diff --git a/feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/PmStandbyStateChangeNotifier.java b/feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/PmStandbyStateChangeNotifier.java
index 3f4ae557..7669cc22 100644
--- a/feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/PmStandbyStateChangeNotifier.java
+++ b/feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/PmStandbyStateChangeNotifier.java
@@ -125,138 +125,163 @@ public class PmStandbyStateChangeNotifier extends StateChangeNotifier {
if (standbyStatus == null || standbyStatus.equals(StateManagement.NULL_VALUE)) {
logger.debug("handleStateChange: standbyStatus is null; standing down PDP={}", pdpId);
- if (previousStandbyStatus.equals(StateManagement.NULL_VALUE)) {
- // We were just here and did this successfully
- logger.debug("handleStateChange: "
- + "Is returning because standbyStatus is null and was previously 'null'; PDP={}",
- pdpId);
- return;
- }
- isWaitingForActivation = false;
- try {
- logger.debug("handleStateChange: null: cancelling delayActivationTimer.");
- cancelTimer();
- // Only want to lock the endpoints, not the controllers.
- getPolicyEngineManager().deactivate();
- // The operation was fully successful, but you cannot assign it a real null value
- // because later we might try to execute previousStandbyStatus.equals() and get
- // a null pointer exception.
- previousStandbyStatus = StateManagement.NULL_VALUE;
- } catch (Exception e) {
- logger.warn("handleStateChange: standbyStatus == null caught exception: ", e);
- }
+ standDownPdpNull(pdpId);
+
} else if (standbyStatus.equals(StateManagement.HOT_STANDBY)
|| standbyStatus.equals(StateManagement.COLD_STANDBY)) {
logger.debug("handleStateChange: standbyStatus={}; standing down PDP={}", standbyStatus, pdpId);
- if (previousStandbyStatus.equals(PmStandbyStateChangeNotifier.HOTSTANDBY_OR_COLDSTANDBY)) {
- // We were just here and did this successfully
- logger.debug("handleStateChange: Is returning because standbyStatus is {}"
- + " and was previously {}; PDP= {}", standbyStatus, previousStandbyStatus, pdpId);
- return;
- }
- isWaitingForActivation = false;
- try {
- logger.debug("handleStateChange: HOT_STNDBY || COLD_STANDBY: cancelling delayActivationTimer.");
- cancelTimer();
- // Only want to lock the endpoints, not the controllers.
- getPolicyEngineManager().deactivate();
- // The operation was fully successful
- previousStandbyStatus = PmStandbyStateChangeNotifier.HOTSTANDBY_OR_COLDSTANDBY;
- } catch (Exception e) {
- logger.warn("handleStateChange: standbyStatus = {} caught exception: {}", standbyStatus, e.getMessage(),
- e);
- }
+ standDownPdp(pdpId, standbyStatus);
} else if (standbyStatus.equals(StateManagement.PROVIDING_SERVICE)) {
logger.debug("handleStateChange: standbyStatus= {} scheduling activation of PDP={}", standbyStatus,
pdpId);
- if (previousStandbyStatus.equals(StateManagement.PROVIDING_SERVICE)) {
- // We were just here and did this successfully
- logger.debug("handleStateChange: Is returning because standbyStatus is {}"
- + "and was previously {}; PDP={}", standbyStatus, previousStandbyStatus, pdpId);
- return;
- }
- try {
- // UnLock all the endpoints
- logger.debug("handleStateChange: standbyStatus={}; controllers must be unlocked.", standbyStatus);
- /*
- * Only endpoints should be unlocked. Controllers have not been locked. Because,
- * sometimes, it is possible for more than one PDP-D to become active (race
- * conditions) we need to delay the activation of the topic endpoint interfaces to
- * give the election algorithm time to resolve the conflict.
- */
- logger.debug("handleStateChange: PROVIDING_SERVICE isWaitingForActivation= {}",
- isWaitingForActivation);
-
- // Delay activation for 2*pdpUpdateInterval+2000 ms in case of an election handler
- // conflict.
- // You could have multiple election handlers thinking they can take over.
-
- // First let's check that the timer has not died
- if (isWaitingForActivation) {
- logger.debug("handleStateChange: PROVIDING_SERVICE isWaitingForActivation = {}",
- isWaitingForActivation);
- long now = new Date().getTime();
- long waitTimeMs = now - startTimeWaitingForActivationMs;
- if (waitTimeMs > 3 * waitInterval) {
- logger.debug("handleStateChange: PROVIDING_SERVICE looks like the activation wait timer "
- + "may be hung, waitTimeMs = {} and allowable waitInterval = {}"
- + " Checking whether it is currently in activation. isNowActivating = {}",
- waitTimeMs, waitInterval, isNowActivating);
- // Now check that it is not currently executing an activation
- if (!isNowActivating) {
- logger.debug("handleStateChange: PROVIDING_SERVICE looks like the activation "
- + "wait timer died");
- // This will assure the timer is cancelled and rescheduled.
- isWaitingForActivation = false;
- }
- }
+ schedulePdpActivation(pdpId, standbyStatus);
- }
+ } else {
+ logger.error("handleStateChange: Unsupported standbyStatus={}; standing down PDP={}", standbyStatus, pdpId);
+ standDownPdpUnsupported(pdpId, standbyStatus);
+ }
- if (!isWaitingForActivation) {
- // Just in case there is an old timer hanging around
- logger.debug("handleStateChange: PROVIDING_SERVICE cancelling delayActivationTimer.");
- cancelTimer();
- delayActivateTimer = makeTimer();
- // delay the activate so the DesignatedWaiter can run twice
- delayActivateTimer.schedule(new DelayActivateClass(), waitInterval);
- isWaitingForActivation = true;
- startTimeWaitingForActivationMs = new Date().getTime();
- logger.debug("handleStateChange: PROVIDING_SERVICE scheduling delayActivationTimer in {} ms",
- waitInterval);
- } else {
- logger.debug("handleStateChange: PROVIDING_SERVICE delayActivationTimer is "
- + "waiting for activation.");
- }
+ logger.debug("handleStateChange: Exiting");
+ }
- } catch (Exception e) {
- logger.warn("handleStateChange: PROVIDING_SERVICE standbyStatus == providingservice caught exception: ",
- e);
- }
+ private void standDownPdpNull(String pdpId) {
+ if (previousStandbyStatus.equals(StateManagement.NULL_VALUE)) {
+ // We were just here and did this successfully
+ logger.debug("handleStateChange: "
+ + "Is returning because standbyStatus is null and was previously 'null'; PDP={}",
+ pdpId);
+ return;
+ }
- } else {
- logger.error("handleStateChange: Unsupported standbyStatus={}; standing down PDP={}", standbyStatus, pdpId);
- if (previousStandbyStatus.equals(PmStandbyStateChangeNotifier.UNSUPPORTED)) {
- // We were just here and did this successfully
- logger.debug("handleStateChange: Is returning because standbyStatus is "
- + "UNSUPPORTED and was previously {}; PDP={}", previousStandbyStatus, pdpId);
- return;
- }
+ isWaitingForActivation = false;
+ try {
+ logger.debug("handleStateChange: null: cancelling delayActivationTimer.");
+ cancelTimer();
// Only want to lock the endpoints, not the controllers.
- isWaitingForActivation = false;
- try {
- logger.debug("handleStateChange: unsupported standbystatus: cancelling delayActivationTimer.");
+ getPolicyEngineManager().deactivate();
+ // The operation was fully successful, but you cannot assign it a real null value
+ // because later we might try to execute previousStandbyStatus.equals() and get
+ // a null pointer exception.
+ previousStandbyStatus = StateManagement.NULL_VALUE;
+ } catch (Exception e) {
+ logger.warn("handleStateChange: standbyStatus == null caught exception: ", e);
+ }
+ }
+
+ private void standDownPdp(String pdpId, String standbyStatus) {
+ if (previousStandbyStatus.equals(PmStandbyStateChangeNotifier.HOTSTANDBY_OR_COLDSTANDBY)) {
+ // We were just here and did this successfully
+ logger.debug("handleStateChange: Is returning because standbyStatus is {}"
+ + " and was previously {}; PDP= {}", standbyStatus, previousStandbyStatus, pdpId);
+ return;
+ }
+
+ isWaitingForActivation = false;
+ try {
+ logger.debug("handleStateChange: HOT_STNDBY || COLD_STANDBY: cancelling delayActivationTimer.");
+ cancelTimer();
+ // Only want to lock the endpoints, not the controllers.
+ getPolicyEngineManager().deactivate();
+ // The operation was fully successful
+ previousStandbyStatus = PmStandbyStateChangeNotifier.HOTSTANDBY_OR_COLDSTANDBY;
+ } catch (Exception e) {
+ logger.warn("handleStateChange: standbyStatus = {} caught exception: {}", standbyStatus, e.getMessage(),
+ e);
+ }
+ }
+
+ private void schedulePdpActivation(String pdpId, String standbyStatus) {
+ if (previousStandbyStatus.equals(StateManagement.PROVIDING_SERVICE)) {
+ // We were just here and did this successfully
+ logger.debug("handleStateChange: Is returning because standbyStatus is {}"
+ + "and was previously {}; PDP={}", standbyStatus, previousStandbyStatus, pdpId);
+ return;
+ }
+
+ try {
+ // UnLock all the endpoints
+ logger.debug("handleStateChange: standbyStatus={}; controllers must be unlocked.", standbyStatus);
+ /*
+ * Only endpoints should be unlocked. Controllers have not been locked. Because,
+ * sometimes, it is possible for more than one PDP-D to become active (race
+ * conditions) we need to delay the activation of the topic endpoint interfaces to
+ * give the election algorithm time to resolve the conflict.
+ */
+ logger.debug("handleStateChange: PROVIDING_SERVICE isWaitingForActivation= {}",
+ isWaitingForActivation);
+
+ // Delay activation for 2*pdpUpdateInterval+2000 ms in case of an election handler
+ // conflict.
+ // You could have multiple election handlers thinking they can take over.
+
+ // First let's check that the timer has not died
+ checkTimerStatus();
+
+ if (!isWaitingForActivation) {
+ // Just in case there is an old timer hanging around
+ logger.debug("handleStateChange: PROVIDING_SERVICE cancelling delayActivationTimer.");
cancelTimer();
- getPolicyEngineManager().deactivate();
- // We know the standbystatus is unsupported
- previousStandbyStatus = PmStandbyStateChangeNotifier.UNSUPPORTED;
- } catch (Exception e) {
- logger.warn("handleStateChange: Unsupported standbyStatus = {} " + "caught exception: {} ",
- standbyStatus, e.getMessage(), e);
+ delayActivateTimer = makeTimer();
+ // delay the activate so the DesignatedWaiter can run twice
+ delayActivateTimer.schedule(new DelayActivateClass(), waitInterval);
+ isWaitingForActivation = true;
+ startTimeWaitingForActivationMs = new Date().getTime();
+ logger.debug("handleStateChange: PROVIDING_SERVICE scheduling delayActivationTimer in {} ms",
+ waitInterval);
+ } else {
+ logger.debug("handleStateChange: PROVIDING_SERVICE delayActivationTimer is "
+ + "waiting for activation.");
}
+
+ } catch (Exception e) {
+ logger.warn("handleStateChange: PROVIDING_SERVICE standbyStatus == providingservice caught exception: ",
+ e);
+ }
+ }
+
+ private void checkTimerStatus() {
+ if (isWaitingForActivation) {
+ logger.debug("handleStateChange: PROVIDING_SERVICE isWaitingForActivation = {}",
+ isWaitingForActivation);
+ long now = new Date().getTime();
+ long waitTimeMs = now - startTimeWaitingForActivationMs;
+ if (waitTimeMs > 3 * waitInterval) {
+ logger.debug("handleStateChange: PROVIDING_SERVICE looks like the activation wait timer "
+ + "may be hung, waitTimeMs = {} and allowable waitInterval = {}"
+ + " Checking whether it is currently in activation. isNowActivating = {}",
+ waitTimeMs, waitInterval, isNowActivating);
+ // Now check that it is not currently executing an activation
+ if (!isNowActivating) {
+ logger.debug("handleStateChange: PROVIDING_SERVICE looks like the activation "
+ + "wait timer died");
+ // This will assure the timer is cancelled and rescheduled.
+ isWaitingForActivation = false;
+ }
+ }
+ }
+ }
+
+ private void standDownPdpUnsupported(String pdpId, String standbyStatus) {
+ if (previousStandbyStatus.equals(PmStandbyStateChangeNotifier.UNSUPPORTED)) {
+ // We were just here and did this successfully
+ logger.debug("handleStateChange: Is returning because standbyStatus is "
+ + "UNSUPPORTED and was previously {}; PDP={}", previousStandbyStatus, pdpId);
+ return;
+ }
+
+ // Only want to lock the endpoints, not the controllers.
+ isWaitingForActivation = false;
+ try {
+ logger.debug("handleStateChange: unsupported standbystatus: cancelling delayActivationTimer.");
+ cancelTimer();
+ getPolicyEngineManager().deactivate();
+ // We know the standbystatus is unsupported
+ previousStandbyStatus = PmStandbyStateChangeNotifier.UNSUPPORTED;
+ } catch (Exception e) {
+ logger.warn("handleStateChange: Unsupported standbyStatus = {} " + "caught exception: {} ",
+ standbyStatus, e.getMessage(), e);
}
- logger.debug("handleStateChange: Exiting");
}
private void cancelTimer() {