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-rw-r--r--feature-active-standby-management/src/main/feature/config/feature-active-standby-management.properties40
-rw-r--r--feature-active-standby-management/src/main/feature/db/activestandbymanagement/sql/18020-activestandbymanagement.upgrade.sql34
-rw-r--r--feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/ActiveStandbyFeature.java227
-rw-r--r--feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/ActiveStandbyProperties.java76
-rw-r--r--feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/DroolsPdp.java50
-rw-r--r--feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/DroolsPdpEntity.java79
-rw-r--r--feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/DroolsPdpImpl.java58
-rw-r--r--feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/DroolsPdpObject.java83
-rw-r--r--feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/DroolsPdpsConnector.java64
-rw-r--r--feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/DroolsPdpsElectionHandler.java973
-rw-r--r--feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/Factory.java40
-rw-r--r--feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/JpaDroolsPdpsConnector.java565
-rw-r--r--feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/PmStandbyStateChangeNotifier.java310
-rw-r--r--feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/ThreadRunningChecker.java27
-rw-r--r--feature-active-standby-management/src/main/resources/META-INF/persistence.xml35
-rw-r--r--feature-active-standby-management/src/main/resources/META-INF/services/org.onap.policy.drools.activestandby.ActiveStandbyFeatureApi1
-rw-r--r--feature-active-standby-management/src/main/resources/META-INF/services/org.onap.policy.drools.core.PolicySessionFeatureApi1
-rw-r--r--feature-active-standby-management/src/main/resources/META-INF/services/org.onap.policy.drools.features.PolicyEngineFeatureApi1
18 files changed, 0 insertions, 2664 deletions
diff --git a/feature-active-standby-management/src/main/feature/config/feature-active-standby-management.properties b/feature-active-standby-management/src/main/feature/config/feature-active-standby-management.properties
deleted file mode 100644
index f5fe1c70..00000000
--- a/feature-active-standby-management/src/main/feature/config/feature-active-standby-management.properties
+++ /dev/null
@@ -1,40 +0,0 @@
-###
-# ============LICENSE_START=======================================================
-# feature-active-standby-management
-# ================================================================================
-# Copyright (C) 2017, 2019, 2021 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=========================================================
-###
-
-# DB properties
-eclipselink.target-database=MySQL
-javax.persistence.jdbc.driver=org.mariadb.jdbc.Driver
-javax.persistence.jdbc.url=jdbc:mariadb://${envd:SQL_HOST}:${envd:SQL_PORT:3306}/activestandbymanagement
-javax.persistence.jdbc.user=${envd:SQL_USER}
-javax.persistence.jdbc.password=${envd:SQL_PASSWORD}
-
-# Must be unique across the system
-resource.name=pdp1
-# Name of the site in which this node is hosted
-site_name=site1
-
-# Needed by DroolsPdpsElectionHandler
-pdp.checkInterval=2500
-pdp.updateInterval=2500
-#pdp.timeout=3000
-# Need long timeout, because testTransaction is only run every 10 seconds.
-pdp.timeout=15000
-#how long do we wait for the pdp table to populate on initial startup
-pdp.initialWait=20000
diff --git a/feature-active-standby-management/src/main/feature/db/activestandbymanagement/sql/18020-activestandbymanagement.upgrade.sql b/feature-active-standby-management/src/main/feature/db/activestandbymanagement/sql/18020-activestandbymanagement.upgrade.sql
deleted file mode 100644
index 4b3375ad..00000000
--- a/feature-active-standby-management/src/main/feature/db/activestandbymanagement/sql/18020-activestandbymanagement.upgrade.sql
+++ /dev/null
@@ -1,34 +0,0 @@
-/*-
- * ============LICENSE_START=======================================================
- * feature-active-standby-management
- * ================================================================================
- * Copyright (C) 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=========================================================
- */
-
-set foreign_key_checks=0;
-
-CREATE TABLE if not exists activestandbymanagement.DROOLSPDPENTITY
-(
-pdpId VARCHAR(255) NOT NULL,
-designated TINYINT(1) default 0 NOT NULL,
-priority INTEGER NOT NULL,
-site VARCHAR(50),
-updatedDate TIMESTAMP NOT NULL,
-designatedDate TIMESTAMP NOT NULL,
-PRIMARY KEY (pdpId)
-);
-
-set foreign_key_checks=1; \ No newline at end of file
diff --git a/feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/ActiveStandbyFeature.java b/feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/ActiveStandbyFeature.java
deleted file mode 100644
index e3125a5f..00000000
--- a/feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/ActiveStandbyFeature.java
+++ /dev/null
@@ -1,227 +0,0 @@
-/*
- * ============LICENSE_START=======================================================
- * feature-active-standby-management
- * ================================================================================
- * Copyright (C) 2017-2021 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=========================================================
- */
-
-package org.onap.policy.drools.activestandby;
-
-import java.io.IOException;
-import java.util.HashMap;
-import java.util.Map;
-import javax.persistence.Persistence;
-import org.eclipse.persistence.config.PersistenceUnitProperties;
-import org.onap.policy.common.im.MonitorTime;
-import org.onap.policy.drools.core.PolicySessionFeatureApi;
-import org.onap.policy.drools.features.PolicyEngineFeatureApi;
-import org.onap.policy.drools.statemanagement.StateManagementFeatureApi;
-import org.onap.policy.drools.statemanagement.StateManagementFeatureApiConstants;
-import org.onap.policy.drools.system.PolicyEngine;
-import org.onap.policy.drools.system.PolicyEngineConstants;
-import org.onap.policy.drools.utils.PropertyUtil;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-/**
- * If this feature is supported, there is a single instance of it.
- * It adds persistence to Drools sessions, but it is also intertwined with
- * active/standby state management and IntegrityMonitor. For now, they are
- * all treated as a single feature, but it would be nice to separate them.
- *
- * <p>The bulk of the code here was once in other classes, such as
- * 'PolicyContainer' and 'Main'. It was moved here as part of making this
- * a separate optional feature.
- */
-public class ActiveStandbyFeature implements ActiveStandbyFeatureApi,
- PolicySessionFeatureApi, PolicyEngineFeatureApi {
- // get an instance of logger
- private static final Logger logger =
- LoggerFactory.getLogger(ActiveStandbyFeature.class);
-
- private static DroolsPdp myPdp;
- private static Object myPdpSync = new Object();
- private static DroolsPdpsElectionHandler electionHandler;
-
- private StateManagementFeatureApi stateManagementFeature;
-
- public static final int SEQ_NUM = 1;
-
-
- /*========================*/
- /* 'FeatureAPI' interface */
- /*========================*/
-
- /**
- * {@inheritDoc}.
- */
- @Override
- public int getSequenceNumber() {
- return SEQ_NUM;
- }
-
- /**
- * {@inheritDoc}.
- */
- @Override
- public void globalInit(String[] args, String configDir) {
- // This must come first since it initializes myPdp
- initializePersistence(configDir);
-
- for (StateManagementFeatureApi feature : StateManagementFeatureApiConstants.getImpl().getList()) {
- if (feature.getResourceName().equals(myPdp.getPdpId())) {
- logger.debug("ActiveStandbyFeature.globalInit: Found StateManagementFeature"
- + " with resourceName: {}", myPdp.getPdpId());
- stateManagementFeature = feature;
- break;
- }
- }
- if (stateManagementFeature == null) {
- logger.debug("ActiveStandbyFeature failed to initialize. "
- + "Unable to get instance of StateManagementFeatureApi "
- + "with resourceID: {}", myPdp.getPdpId());
- logger.error("ActiveStandbyFeature failed to initialize. "
- + "Unable to get instance of StateManagementFeatureApi "
- + "with resourceID: {}", myPdp.getPdpId());
- //
- // Cannot add observer since stateManagementFeature is null
- //
- return;
- }
-
-
-
- //Create an instance of the Observer
- var pmNotifier = new PmStandbyStateChangeNotifier();
-
- //Register the PMStandbyStateChangeNotifier Observer
- stateManagementFeature.addObserver(pmNotifier);
- logger.debug("ActiveStandbyFeature.globalInit() exit");
- }
-
-
- /**
- * {@inheritDoc}.
- */
- @Override
- public boolean afterStart(PolicyEngine engine) {
- // ASSERTION: engine == PolicyEngine.manager
- PolicyEngineConstants.getManager().lock();
- return false;
- }
-
- /**
- * Read in the persistence properties, determine whether persistence is
- * enabled or disabled, and initialize persistence if enabled.
- */
- private static void initializePersistence(String configDir) {
- //Get the Active Standby properties
- try {
- var activeStandbyProperties =
- PropertyUtil.getProperties(configDir + "/feature-active-standby-management.properties");
- ActiveStandbyProperties.initProperties(activeStandbyProperties);
- logger.info("initializePersistence: ActiveStandbyProperties success");
- } catch (IOException e) {
- logger.error("ActiveStandbyFeature: initializePersistence ActiveStandbyProperties", e);
- }
-
- var conn = getDroolsPdpsConnector("activeStandbyPU");
- String resourceName = ActiveStandbyProperties.getProperty(ActiveStandbyProperties.NODE_NAME);
- if (resourceName == null) {
- throw new NullPointerException();
- }
-
- /*
- * In a JUnit test environment, one or more PDPs may already have been
- * inserted in the DB, so we need to check for this.
- */
- DroolsPdp existingPdp = conn.getPdp(resourceName);
- if (existingPdp != null) {
- logger.info("Found existing PDP record, pdpId={} isDesignated={}, updatedDate={}",
- existingPdp.getPdpId(), existingPdp.isDesignated(), existingPdp.getUpdatedDate());
- myPdp = existingPdp;
- }
-
- synchronized (myPdpSync) {
- if (myPdp == null) {
-
- myPdp = new DroolsPdpImpl(resourceName, false, 4, MonitorTime.getInstance().getDate());
- }
- String siteName = ActiveStandbyProperties.getProperty(ActiveStandbyProperties.SITE_NAME);
- if (siteName == null) {
- siteName = "";
- } else {
- siteName = siteName.trim();
- }
- myPdp.setSite(siteName);
- if (electionHandler == null) {
- electionHandler = new DroolsPdpsElectionHandler(conn, myPdp);
- }
- }
- logger.info("\n\nThis controller is a standby, waiting to be chosen as primary...\n\n");
- }
-
-
- /**
- * Moved code to instantiate a JpaDroolsPdpsConnector object from main() to
- * this method, so it can also be accessed from StandbyStateChangeNotifier
- * class.
- *
- * @param pu string
- * @return connector object
- */
- public static DroolsPdpsConnector getDroolsPdpsConnector(String pu) {
-
- Map<String, Object> propMap = new HashMap<>();
- propMap.put(PersistenceUnitProperties.JDBC_DRIVER,
- ActiveStandbyProperties.getProperty(ActiveStandbyProperties.DB_DRIVER));
- propMap.put(PersistenceUnitProperties.JDBC_URL,
- ActiveStandbyProperties.getProperty(ActiveStandbyProperties.DB_URL));
- propMap.put(PersistenceUnitProperties.JDBC_USER,
- ActiveStandbyProperties.getProperty(ActiveStandbyProperties.DB_USER));
- propMap.put(PersistenceUnitProperties.JDBC_PASSWORD,
- ActiveStandbyProperties.getProperty(ActiveStandbyProperties.DB_PWD));
- propMap.put(PersistenceUnitProperties.TARGET_DATABASE,
- ActiveStandbyProperties.getProperty(ActiveStandbyProperties.DB_TYPE));
-
- var emf = Persistence.createEntityManagerFactory(pu, propMap);
- return new JpaDroolsPdpsConnector(emf);
- }
-
- /**
- * {@inheritDoc}.
- */
- @Override
- public String getPdpdNowActive() {
- return electionHandler.getPdpdNowActive();
- }
-
- /**
- * {@inheritDoc}.
- */
- @Override
- public String getPdpdLastActive() {
- return electionHandler.getPdpdLastActive();
- }
-
- /**
- * {@inheritDoc}.
- */
- @Override
- public String getResourceName() {
- return myPdp.getPdpId();
- }
-}
diff --git a/feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/ActiveStandbyProperties.java b/feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/ActiveStandbyProperties.java
deleted file mode 100644
index 30c8171e..00000000
--- a/feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/ActiveStandbyProperties.java
+++ /dev/null
@@ -1,76 +0,0 @@
-/*-
- * ============LICENSE_START=======================================================
- * feature-active-standby-management
- * ================================================================================
- * Copyright (C) 2017-2019, 2021 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=========================================================
- */
-
-package org.onap.policy.drools.activestandby;
-
-import java.util.Properties;
-import lombok.AccessLevel;
-import lombok.Getter;
-import lombok.NoArgsConstructor;
-import org.eclipse.persistence.config.PersistenceUnitProperties;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-@NoArgsConstructor(access = AccessLevel.PRIVATE)
-public final class ActiveStandbyProperties {
- // get an instance of logger
- private static final Logger logger = LoggerFactory.getLogger(ActiveStandbyProperties.class);
-
- public static final String PDP_CHECK_INVERVAL = "pdp.checkInterval";
- public static final String PDP_UPDATE_INTERVAL = "pdp.updateInterval";
- public static final String PDP_TIMEOUT = "pdp.timeout";
- public static final String PDP_INITIAL_WAIT_PERIOD = "pdp.initialWait";
-
- public static final String NODE_NAME = "resource.name";
- public static final String SITE_NAME = "site_name";
-
- /*
- * feature-active-standby-management.properties parameter key values
- */
- public static final String DB_DRIVER = PersistenceUnitProperties.JDBC_DRIVER;
- public static final String DB_URL = PersistenceUnitProperties.JDBC_URL;
- public static final String DB_USER = PersistenceUnitProperties.JDBC_USER;
- public static final String DB_PWD = PersistenceUnitProperties.JDBC_PASSWORD;
- public static final String DB_TYPE = PersistenceUnitProperties.TARGET_DATABASE;
-
- @Getter
- private static Properties properties = null;
-
- /**
- * Initialize the parameter values from the droolsPersitence.properties file values.
- *
- * <p>This is designed so that the Properties object is obtained from properties
- * file and then is passed to this method to initialize the value of the parameters.
- * This allows the flexibility of JUnit tests using getProperties(filename) to get the
- * properties while runtime methods can use getPropertiesFromClassPath(filename).
- *
- * @param prop properties
- */
- public static void initProperties(Properties prop) {
- logger.info("ActiveStandbyProperties.initProperties(Properties): entry");
- logger.info("\n\nActiveStandbyProperties.initProperties: Properties = \n{}\n\n", prop);
-
- properties = prop;
- }
-
- public static String getProperty(String key) {
- return properties.getProperty(key);
- }
-}
diff --git a/feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/DroolsPdp.java b/feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/DroolsPdp.java
deleted file mode 100644
index 12c75929..00000000
--- a/feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/DroolsPdp.java
+++ /dev/null
@@ -1,50 +0,0 @@
-/*-
- * ============LICENSE_START=======================================================
- * feature-active-standby-management
- * ================================================================================
- * Copyright (C) 2017-2019 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=========================================================
- */
-
-package org.onap.policy.drools.activestandby;
-
-import java.util.Date;
-
-public interface DroolsPdp {
-
- String getPdpId();
-
- boolean isDesignated();
-
- int getPriority();
-
- Date getUpdatedDate();
-
- void setDesignated(boolean isDesignated);
-
- void setUpdatedDate(Date updatedDate);
-
- int comparePriority(DroolsPdp other);
-
- int comparePriority(DroolsPdp other, String previousSite);
-
- String getSite();
-
- void setSite(String site);
-
- Date getDesignatedDate();
-
- void setDesignatedDate(Date designatedDate);
-}
diff --git a/feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/DroolsPdpEntity.java b/feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/DroolsPdpEntity.java
deleted file mode 100644
index 526200fc..00000000
--- a/feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/DroolsPdpEntity.java
+++ /dev/null
@@ -1,79 +0,0 @@
-/*-
- * ============LICENSE_START=======================================================
- * feature-active-standby-management
- * ================================================================================
- * Copyright (C) 2017-2019, 2021 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=========================================================
- */
-
-package org.onap.policy.drools.activestandby;
-
-import java.io.Serializable;
-import java.util.Date;
-import javax.persistence.Column;
-import javax.persistence.Entity;
-import javax.persistence.Id;
-import javax.persistence.NamedQuery;
-import javax.persistence.Temporal;
-import javax.persistence.TemporalType;
-import lombok.EqualsAndHashCode;
-import lombok.Getter;
-import lombok.Setter;
-import org.onap.policy.common.im.MonitorTime;
-
-@Entity
-//@Table(name="DroolsPdpEntity")
-
-@NamedQuery(name = "DroolsPdpEntity.findAll", query = "SELECT e FROM DroolsPdpEntity e ")
-@NamedQuery(name = "DroolsPdpEntity.deleteAll", query = "DELETE FROM DroolsPdpEntity WHERE 1=1")
-@Getter
-@Setter
-@EqualsAndHashCode(onlyExplicitlyIncluded = true, callSuper = true)
-public class DroolsPdpEntity extends DroolsPdpObject implements Serializable {
-
- private static final long serialVersionUID = 1L;
-
- @Id
- @Column(name = "pdpId", nullable = false)
- private String pdpId = "-1";
-
- @Column(name = "designated", nullable = false)
- private boolean designated = false;
-
- @Column(name = "priority", nullable = false)
- private int priority = 0;
-
- @Temporal(TemporalType.TIMESTAMP)
- @Column(name = "updatedDate", nullable = false)
- private Date updatedDate;
-
- @Temporal(TemporalType.TIMESTAMP)
- @Column(name = "designatedDate", nullable = false)
- private Date designatedDate;
-
- @Column(name = "site", nullable = true, length = 50)
- private String site;
-
- /**
- * Constructor.
- */
- public DroolsPdpEntity() {
- updatedDate = MonitorTime.getInstance().getDate();
- //When this is translated to a TimeStamp in MySQL, it assumes the date is relative
- //to the local timezone. So, a value of Date(0) is actually Dec 31 18:00:00 CST 1969
- //which is an invalid value for the MySql TimeStamp
- designatedDate = new Date(864000000);
- }
-}
diff --git a/feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/DroolsPdpImpl.java b/feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/DroolsPdpImpl.java
deleted file mode 100644
index dac35ea3..00000000
--- a/feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/DroolsPdpImpl.java
+++ /dev/null
@@ -1,58 +0,0 @@
-/*-
- * ============LICENSE_START=======================================================
- * feature-active-standby-management
- * ================================================================================
- * Copyright (C) 2017-2019, 2021 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=========================================================
- */
-
-package org.onap.policy.drools.activestandby;
-
-import java.util.Date;
-import lombok.EqualsAndHashCode;
-import lombok.Getter;
-import lombok.Setter;
-
-@Getter
-@Setter
-@EqualsAndHashCode(onlyExplicitlyIncluded = true, callSuper = true)
-public class DroolsPdpImpl extends DroolsPdpObject {
-
- private boolean designated;
- private int priority;
- private Date updatedDate;
- private Date designatedDate;
- private String pdpId;
- private String site;
-
- /**
- * Contructor.
- *
- * @param pdpId ID for the PDP
- * @param designated is designated
- * @param priority priority
- * @param updatedDate date updated
- */
- public DroolsPdpImpl(String pdpId, boolean designated, int priority, Date updatedDate) {
- this.pdpId = pdpId;
- this.designated = designated;
- this.priority = priority;
- this.updatedDate = updatedDate;
- //When this is translated to a TimeStamp in MySQL, it assumes the date is relative
- //to the local timezone. So, a value of Date(0) is actually Dec 31 18:00:00 CST 1969
- //which is an invalid value for the MySql TimeStamp
- this.designatedDate = new Date(864000000);
- }
-}
diff --git a/feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/DroolsPdpObject.java b/feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/DroolsPdpObject.java
deleted file mode 100644
index c8971130..00000000
--- a/feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/DroolsPdpObject.java
+++ /dev/null
@@ -1,83 +0,0 @@
-/*
- * ============LICENSE_START=======================================================
- * feature-active-standby-management
- * ================================================================================
- * Copyright (C) 2017-2019, 2021 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=========================================================
- */
-
-package org.onap.policy.drools.activestandby;
-
-
-public abstract class DroolsPdpObject implements DroolsPdp {
-
- @Override
- public boolean equals(Object other) {
- if (other instanceof DroolsPdp) {
- return this.getPdpId().equals(((DroolsPdp) other).getPdpId());
- } else {
- return false;
- }
- }
-
- @Override
- public int hashCode() {
- final var prime = 31;
- var result = 1;
- result = prime * result + (this.getPdpId() == null ? 0 : this.getPdpId().hashCode());
- return result;
- }
-
- private int nullSafeCompare(String one, String two) {
- if (one != null) {
- if (two != null) {
- return one.compareTo(two);
-
- } else {
- return 1;
- }
-
- } else if (two != null) {
- return -1;
-
- } else {
- return 0;
- }
- }
-
- @Override
- public int comparePriority(DroolsPdp other) {
- return commonCompare(other);
- }
-
- @Override
- public int comparePriority(DroolsPdp other, String previousSite) {
- if (previousSite == null || previousSite.isEmpty()) {
- return comparePriority(other);
- }
- return commonCompare(other);
- }
-
- private int commonCompare(DroolsPdp other) {
- if (nullSafeCompare(this.getSite(), other.getSite()) == 0) {
- if (this.getPriority() != other.getPriority()) {
- return this.getPriority() - other.getPriority();
- }
- return this.getPdpId().compareTo(other.getPdpId());
- } else {
- return nullSafeCompare(this.getSite(), other.getSite());
- }
- }
-}
diff --git a/feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/DroolsPdpsConnector.java b/feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/DroolsPdpsConnector.java
deleted file mode 100644
index 6e06272c..00000000
--- a/feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/DroolsPdpsConnector.java
+++ /dev/null
@@ -1,64 +0,0 @@
-/*-
- * ============LICENSE_START=======================================================
- * feature-active-standby-management
- * ================================================================================
- * Copyright (C) 2017-2019 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=========================================================
- */
-
-package org.onap.policy.drools.activestandby;
-
-import java.util.Collection;
-
-public interface DroolsPdpsConnector {
-
-
- //return a list of PDPs, NOT including this PDP
- Collection<DroolsPdp> getDroolsPdps();
-
- void update(DroolsPdp pdp);
-
- //determines if the DroolsPdp parameter is considered "current" or expired
- //(has it been too long since the Pdp sent an update)
- boolean isPdpCurrent(DroolsPdp pdp);
-
- // Updates DESIGNATED boolean in PDP record.
- void setDesignated(DroolsPdp pdp, boolean designated);
-
- // Marks droolspdpentity.DESIGNATED=false, so another PDP-D will go active.
- void standDownPdp(String pdpId);
-
- // This is used in a JUnit test environment to manually
- // insert a PDP
- void insertPdp(DroolsPdp pdp);
-
- // This is used in a JUnit test environment to manually
- // delete a PDP
- void deletePdp(String pdpId);
-
- // This is used in a JUnit test environment to manually
- // clear the droolspdpentity table.
- void deleteAllPdps();
-
- // This is used in a JUnit test environment to manually
- // get a PDP
- DroolsPdpEntity getPdp(String pdpId);
-
- // Used by DroolsPdpsElectionHandler to determine if the currently designated
- // PDP has failed.
- boolean hasDesignatedPdpFailed(Collection<DroolsPdp> pdps);
-
-
-}
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
deleted file mode 100644
index ff4b21df..00000000
--- a/feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/DroolsPdpsElectionHandler.java
+++ /dev/null
@@ -1,973 +0,0 @@
-/*
- * ============LICENSE_START=======================================================
- * feature-active-standby-management
- * ================================================================================
- * Copyright (C) 2017-2021 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=========================================================
- */
-
-package org.onap.policy.drools.activestandby;
-
-import java.util.ArrayList;
-import java.util.Collection;
-import java.util.Date;
-import java.util.List;
-import java.util.Objects;
-import java.util.TimerTask;
-import lombok.Getter;
-import lombok.Setter;
-import org.onap.policy.common.im.MonitorTime;
-import org.onap.policy.common.im.StateManagement;
-import org.onap.policy.common.utils.time.CurrentTime;
-import org.onap.policy.drools.statemanagement.StateManagementFeatureApi;
-import org.onap.policy.drools.statemanagement.StateManagementFeatureApiConstants;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-public class DroolsPdpsElectionHandler implements ThreadRunningChecker {
- private static final String RUN_PRIMARY_MSG = "DesignatedWaiter.run mostRecentPrimary = {}";
-
- // get an instance of logger
- private static final Logger logger = LoggerFactory.getLogger(DroolsPdpsElectionHandler.class);
-
- /*
- * Must be static, so it can be referenced by JpaDroolsPdpsConnector,
- * without requiring a reference to the election handler instantiation.
- */
- private static DroolsPdp myPdp;
-
- @Setter
- private static boolean unitTesting = false;
- @Setter
- private static boolean stalled = false;
-
- private DroolsPdpsConnector pdpsConnector;
- private Object checkWaitTimerLock = new Object();
- private Object designationWaiterLock = new Object();
-
- private Date waitTimerLastRunDate;
-
- // The interval between runs of the DesignationWaiter
- private int pdpUpdateInterval;
-
- private volatile boolean isDesignated;
-
- @Getter
- private String pdpdNowActive;
- @Getter
- private String pdpdLastActive;
-
- /*
- * Start allSeemsWell with a value of null so that, on the first run
- * of the checkWaitTimer it will set the value in IntegrityMonitor
- * regardless of whether it needs to be set to true or false.
- */
- private Boolean allSeemsWell = null;
-
- private StateManagementFeatureApi stateManagementFeature;
-
- private final CurrentTime currentTime = MonitorTime.getInstance();
-
- /**
- * Constructor.
- *
- * @param pdps connectors
- * @param myPdp pdp
- */
- public DroolsPdpsElectionHandler(DroolsPdpsConnector pdps, DroolsPdp myPdp) {
- if (pdps == null) {
- logger.error("DroolsPdpsElectinHandler(): pdpsConnector==null");
- throw new IllegalArgumentException("DroolsPdpsElectinHandler(): pdpsConnector==null");
- }
- if (myPdp == null) {
- logger.error("DroolsPdpsElectinHandler(): droolsPdp==null");
- throw new IllegalArgumentException("DroolsPdpsElectinHandler(): DroolsPdp==null");
- }
-
- pdpdNowActive = null;
- pdpdLastActive = null;
- this.pdpsConnector = pdps;
- setMyPdp(myPdp);
- this.isDesignated = false;
-
- // The interval between checks of the DesignationWaiter to be sure it is running.
- var pdpCheckInterval = 3000;
- try {
- pdpCheckInterval = Integer.parseInt(ActiveStandbyProperties.getProperty(
- ActiveStandbyProperties.PDP_CHECK_INVERVAL));
- } catch (Exception e) {
- logger.error("Could not get pdpCheckInterval property. Using default {}", pdpCheckInterval, e);
- }
- pdpUpdateInterval = 2000;
- try {
- pdpUpdateInterval = Integer.parseInt(ActiveStandbyProperties.getProperty(
- ActiveStandbyProperties.PDP_UPDATE_INTERVAL));
- } catch (Exception e) {
- logger.error("Could not get pdpUpdateInterval property. Using default {} ", pdpUpdateInterval, e);
- }
-
- var now = currentTime.getDate();
-
- // Retrieve the ms since the epoch
- final long nowMs = now.getTime();
-
- // Create the timer which will update the updateDate in DroolsPdpEntity table.
- // This is the heartbeat
- var updateWorker = Factory.getInstance().makeTimer();
-
- // Schedule the TimerUpdateClass to run at 100 ms and run at pdpCheckInterval ms thereafter
- // NOTE: The first run of the TimerUpdateClass results in myPdp being added to the
- // drools droolsPdpEntity table.
- updateWorker.scheduleAtFixedRate(new TimerUpdateClass(), 100, pdpCheckInterval);
-
- // Create the timer which will run the election algorithm
- var waitTimer = Factory.getInstance().makeTimer();
-
- // Schedule it to start in startMs ms
- // (so it will run after the updateWorker and run at pdpUpdateInterval ms thereafter
- long startMs = getDWaiterStartMs();
- var designationWaiter = new DesignationWaiter();
- waitTimer.scheduleAtFixedRate(designationWaiter, startMs, pdpUpdateInterval);
- waitTimerLastRunDate = new Date(nowMs + startMs);
-
- //Get the StateManagementFeature instance
-
- for (StateManagementFeatureApi feature : StateManagementFeatureApiConstants.getImpl().getList()) {
- if (feature.getResourceName().equals(myPdp.getPdpId())) {
- logger.debug("DroolsPdpsElectionHandler: Found StateManagementFeature"
- + " with resourceName: {}", myPdp.getPdpId());
- stateManagementFeature = feature;
- break;
- }
- }
- if (stateManagementFeature == null) {
- logger.error("DroolsPdpsElectionHandler failed to initialize. "
- + "Unable to get instance of StateManagementFeatureApi "
- + "with resourceID: {}", myPdp.getPdpId());
- }
- }
-
- private static void setMyPdp(DroolsPdp myPdp) {
- DroolsPdpsElectionHandler.myPdp = myPdp;
- }
-
- /**
- * When the JpaDroolsPdpsConnector.standDown() method is invoked, it needs
- * access to myPdp, so it can keep its designation status in sync with the
- * DB.
- *
- * @param designated is designated value
- */
- public static void setMyPdpDesignated(boolean designated) {
- logger.debug("setMyPdpDesignated: designated= {}", designated);
- myPdp.setDesignated(designated);
- }
-
- private class DesignationWaiter extends TimerTask {
- // get an instance of logger
- private final Logger logger = LoggerFactory.getLogger(DesignationWaiter.class);
-
- @Override
- public void run() {
- try {
- logger.debug("DesignatedWaiter.run: Entering");
-
- //This is for testing the checkWaitTimer
- if (unitTesting && stalled) {
- logger.debug("DesignatedWaiter.run: isUnitTesting = {} isStalled = {}",
- unitTesting, stalled);
- return;
- }
-
- synchronized (designationWaiterLock) {
-
- logger.debug("DesignatedWaiter.run: Entering synchronized block");
-
- //It is possible that multiple PDPs are designated lead. So, we will make a list of all designated
- //PDPs and then decide which one really should be designated at the end.
- List<DroolsPdp> listOfDesignated = new ArrayList<>();
-
- Collection<DroolsPdp> pdps = pdpsConnector.getDroolsPdps();
-
- logger.debug("DesignatedWaiter.run: pdps.size= {}", pdps.size());
-
- //This is only true if all designated PDPs have failed
- allPdpsFailed(pdps, listOfDesignated);
-
- /*
- * We have checked the four combinations of isDesignated and isCurrent. Where appropriate,
- * we added the PDPs to the potential list of designated pdps
- *
- * We need to give priority to pdps on the same site that is currently being used
- * First, however, we must sanitize the list of designated to make sure their are
- * only designated members or non-designated members. There should not be both in
- * the list. Because there are real time delays, it is possible that both types could
- * be on the list.
- */
-
- listOfDesignated = santizeDesignatedList(listOfDesignated);
-
- /*
- * We need to figure out the last pdp that was the primary so we can get the last site
- * name and the last session numbers. We need to create a "dummy" droolspdp since
- * it will be used in later comparisons and cannot be null.
- */
-
- DroolsPdp mostRecentPrimary = computeMostRecentPrimary(pdps, listOfDesignated);
-
- if (mostRecentPrimary != null) {
- pdpdLastActive = mostRecentPrimary.getPdpId();
- }
-
-
- /*
- * 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.
- *
- * It is possible to have 0, 1, 2 or more but not all, or all designated.
- * If we have one designated and current, we chose it and are done
- * If we have 2 or more, but not all, we must determine which one is in the same site as
- * the previously designated pdp.
- */
- DroolsPdp designatedPdp = computeDesignatedPdp(listOfDesignated, mostRecentPrimary);
-
- if (designatedPdp == null) {
- logger.warn("WARNING: DesignatedWaiter.run: No viable PDP found to be Designated. "
- + "designatedPdp still null.");
- designateNoPdp();
- return;
- }
-
- pdpdNowActive = designatedPdp.getPdpId();
-
- if (pdpdNowActive.equals(myPdp.getPdpId())) {
- logger.debug("DesignatedWaiter.run: designatedPdp is PDP={}", myPdp.getPdpId());
- designateMyPdp();
- return;
- }
-
- isDesignated = false;
-
- } // end synchronized
- logger.debug("DesignatedWaiter.run: myPdp: {}; Returning, isDesignated= {}",
- isDesignated, myPdp.getPdpId());
-
- var tmpDate = currentTime.getDate();
- logger.debug("DesignatedWaiter.run (end of run) waitTimerLastRunDate = {}", tmpDate);
-
- waitTimerLastRunDate = tmpDate;
- myPdp.setUpdatedDate(waitTimerLastRunDate);
- pdpsConnector.update(myPdp);
-
- } catch (Exception e) {
- 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 = currentTime.getDate();
- 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(currentTime.getDate());
- 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.
- */
- 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 = currentTime.getDate();
- logger.debug("DesignatedWaiter.run (designatedPdp.getPdpId().equals(myPdp.getPdpId())) "
- + "waitTimerLastRunDate = {}", waitTimerLastRunDate);
- myPdp.setUpdatedDate(waitTimerLastRunDate);
- pdpsConnector.update(myPdp);
- }
- }
-
- /**
- * Sanitize designated list.
- *
- * @param listOfDesignated list of designated pdps
- * @return list of drools pdps
- */
- public List<DroolsPdp> santizeDesignatedList(List<DroolsPdp> listOfDesignated) {
-
- var containsDesignated = false;
- var containsHotStandby = false;
- List<DroolsPdp> listForRemoval = new ArrayList<>();
- for (DroolsPdp pdp : listOfDesignated) {
- logger.debug("DesignatedWaiter.run sanitizing: pdp = {}"
- + " isDesignated = {}", pdp.getPdpId(), pdp.isDesignated());
- if (pdp.isDesignated()) {
- containsDesignated = true;
- } else {
- containsHotStandby = true;
- listForRemoval.add(pdp);
- }
- }
- if (containsDesignated && containsHotStandby) {
- //remove the hot standby from the list
- listOfDesignated.removeAll(listForRemoval);
- }
- return listOfDesignated;
- }
-
- /**
- * Compute most recent primary.
- *
- * @param pdps collection of pdps
- * @param listOfDesignated list of designated pdps
- * @return drools pdp object
- */
- public DroolsPdp computeMostRecentPrimary(Collection<DroolsPdp> pdps, List<DroolsPdp> listOfDesignated) {
- 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
- 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 = 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) {
- /*
- * 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
- * site with the latest designated date for the pdp not included on the designated list.
- * This should be the site that had the last designation before this race condition
- * occurred.
- */
- mostRecentPrimary = getLatestUndesignated(pdps, mostRecentPrimary, listOfDesignated);
-
- } else {
- //The list only contains hot standby. Choose the site of the latest designated date
- 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.
- *
- * @param listOfDesignated list of designated pdps
- * @param mostRecentPrimary most recent primary pdpd
- * @return drools pdp object
- */
- public DroolsPdp computeDesignatedPdp(List<DroolsPdp> listOfDesignated, DroolsPdp mostRecentPrimary) {
- 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());
- var data = new DesignatedData();
- for (DroolsPdp pdp : listOfDesignated) {
- DroolsPdp rejectedPdp;
-
- // We need to determine if another PDP is the lowest priority
- if (Objects.equals(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 && Objects.equals(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();
- }
- }
-
- 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;
- }
- lowestPrioritySameSite = pdp;
- return null;
- } else {
- if (pdp.getPdpId().equals((lowestPrioritySameSite.getPdpId()))) {
- return null; //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
- 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) {
- //if we already have a candidate for same site, we don't want to bother with different sites
- return pdp;
- } else {
- 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;
- }
- }
- }
-
- 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 {
-
- @Override
- public void run() {
- try {
- logger.debug("TimerUpdateClass.run: entry");
- checkWaitTimer();
- } catch (Exception e) {
- logger.error("TimerUpdateClass.run caught an unexpected exception: ", e);
- }
- logger.debug("TimerUpdateClass.run.exit");
- }
- }
-
- @Override
- public void checkThreadStatus() {
- checkWaitTimer();
- }
-
- private void checkWaitTimer() {
- synchronized (checkWaitTimerLock) {
- try {
- logger.debug("checkWaitTimer: entry");
- var now = currentTime.getDate();
- long nowMs = now.getTime();
- long waitTimerMs = waitTimerLastRunDate.getTime();
-
- //give it 10 times leeway
- if ((nowMs - waitTimerMs) > 10 * pdpUpdateInterval) {
- if (allSeemsWell == null || allSeemsWell) {
- allSeemsWell = false;
- logger.debug("checkWaitTimer: calling allSeemsWell with ALLNOTWELL param");
- stateManagementFeature.allSeemsWell(this.getClass().getName(),
- StateManagementFeatureApiConstants.ALLNOTWELL_STATE,
- "DesignationWaiter/ElectionHandler has STALLED");
- }
- logger.error("checkWaitTimer: nowMs - waitTimerMs = {}"
- + ", exceeds 10* pdpUpdateInterval = {}"
- + " DesignationWaiter is STALLED!", (nowMs - waitTimerMs), (10 * pdpUpdateInterval));
- } else if (allSeemsWell == null || !allSeemsWell) {
- allSeemsWell = true;
- stateManagementFeature.allSeemsWell(this.getClass().getName(),
- StateManagementFeatureApiConstants.ALLSEEMSWELL_STATE,
- "DesignationWaiter/ElectionHandler has RESUMED");
- logger.info("DesignationWaiter/ElectionHandler has RESUMED");
- }
- logger.debug("checkWaitTimer: exit");
- } catch (Exception e) {
- logger.error("checkWaitTimer: caught unexpected exception: ", e);
- }
- }
- }
-
- private long getDWaiterStartMs() {
- var now = currentTime.getDate();
-
- // Retrieve the ms since the epoch
- long nowMs = now.getTime();
-
- // Time since the end of the last pdpUpdateInterval multiple
- long nowModMs = nowMs % pdpUpdateInterval;
-
- // Time to the start of the next pdpUpdateInterval multiple
- long startMs = 2 * pdpUpdateInterval - nowModMs;
-
- // Give the start time a minimum of a 5 second cushion
- if (startMs < 5000) {
- // Start at the beginning of following interval
- startMs = pdpUpdateInterval + startMs;
- }
- return startMs;
- }
-}
diff --git a/feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/Factory.java b/feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/Factory.java
deleted file mode 100644
index fae70074..00000000
--- a/feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/Factory.java
+++ /dev/null
@@ -1,40 +0,0 @@
-/*
- * ============LICENSE_START=======================================================
- * ONAP
- * ================================================================================
- * Copyright (C) 2019 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=========================================================
- */
-
-package org.onap.policy.drools.activestandby;
-
-import java.util.Timer;
-import lombok.AccessLevel;
-import lombok.Getter;
-import lombok.Setter;
-
-/**
- * Factory for creating various objects.
- */
-public class Factory {
-
- @Getter
- @Setter(AccessLevel.PROTECTED)
- private static Factory instance = new Factory();
-
- public Timer makeTimer() {
- return new Timer();
- }
-}
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
deleted file mode 100644
index 39386d5e..00000000
--- a/feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/JpaDroolsPdpsConnector.java
+++ /dev/null
@@ -1,565 +0,0 @@
-/*
- * ============LICENSE_START=======================================================
- * feature-active-standby-management
- * ================================================================================
- * Copyright (C) 2017-2021 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=========================================================
- */
-
-package org.onap.policy.drools.activestandby;
-
-import java.util.Collection;
-import java.util.LinkedList;
-import java.util.List;
-import javax.persistence.EntityManager;
-import javax.persistence.EntityManagerFactory;
-import javax.persistence.FlushModeType;
-import javax.persistence.LockModeType;
-import lombok.AllArgsConstructor;
-import org.onap.policy.common.im.MonitorTime;
-import org.onap.policy.common.utils.time.CurrentTime;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-@AllArgsConstructor
-public class JpaDroolsPdpsConnector implements DroolsPdpsConnector {
-
- private static final String SELECT_PDP_BY_ID = "SELECT p FROM DroolsPdpEntity p WHERE p.pdpId=:pdpId";
- private static final String PDP_ID_PARAM = "pdpId";
-
- // get an instance of logger
- private static final Logger logger = LoggerFactory.getLogger(JpaDroolsPdpsConnector.class);
- private EntityManagerFactory emf;
-
- private final CurrentTime currentTime = MonitorTime.getInstance();
-
- @Override
- public Collection<DroolsPdp> getDroolsPdps() {
- //return a list of all the DroolsPdps in the database
- var em = emf.createEntityManager();
- try {
- em.getTransaction().begin();
- var droolsPdpsListQuery = em.createQuery("SELECT p FROM DroolsPdpEntity p", DroolsPdp.class);
- List<DroolsPdp> droolsPdpsList = droolsPdpsListQuery.setLockMode(LockModeType.NONE)
- .setFlushMode(FlushModeType.COMMIT).getResultList();
- LinkedList<DroolsPdp> droolsPdpsReturnList = new LinkedList<>();
- for (DroolsPdp droolsPdp : droolsPdpsList) {
- //Make sure it is not a cached version
- 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 {
- em.getTransaction().commit();
- } catch (Exception e) {
- logger.error("Cannot commit getDroolsPdps() transaction", e);
- }
- return droolsPdpsReturnList;
- } finally {
- cleanup(em, "getDroolsPdps");
- }
- }
-
- private boolean nullSafeEquals(Object one, Object two) {
- if (one == null && two == null) {
- return true;
- }
- if (one != null && two != null) {
- return one.equals(two);
- }
- return false;
- }
-
- @Override
- public void update(DroolsPdp pdp) {
-
- logger.debug("update: Entering, pdpId={}", pdp.getPdpId());
-
- //this is to update our own pdp in the database
- var em = emf.createEntityManager();
- try {
- em.getTransaction().begin();
- var droolsPdpsListQuery = em.createQuery(SELECT_PDP_BY_ID, DroolsPdpEntity.class);
- droolsPdpsListQuery.setParameter(PDP_ID_PARAM, pdp.getPdpId());
- List<DroolsPdpEntity> droolsPdpsList = droolsPdpsListQuery.setLockMode(LockModeType.NONE)
- .setFlushMode(FlushModeType.COMMIT).getResultList();
- DroolsPdpEntity droolsPdpEntity;
- if (droolsPdpsList.size() == 1) {
- droolsPdpEntity = droolsPdpsList.get(0);
- em.refresh(droolsPdpEntity); //Make sure we have current values
- var currentDate = currentTime.getDate();
- long difference = currentDate.getTime() - droolsPdpEntity.getUpdatedDate().getTime();
- //just set some kind of default here
- long pdpTimeout = 15000;
- try {
- pdpTimeout = Long.parseLong(
- ActiveStandbyProperties.getProperty(ActiveStandbyProperties.PDP_TIMEOUT));
- } catch (Exception e) {
- logger.error("Could not get PDP timeout property, using default.", e);
- }
- boolean isCurrent = difference < pdpTimeout;
- logger.debug("update: PDP= {}, isCurrent={}"
- + " difference= {}"
- + ", pdpTimeout= {}, designated= {}",
- pdp.getPdpId(), isCurrent, difference, pdpTimeout, droolsPdpEntity.isDesignated());
- } else {
- logger.debug("update: For PDP={}"
- + ", instantiating new DroolsPdpEntity", pdp.getPdpId());
- droolsPdpEntity = new DroolsPdpEntity();
- em.persist(droolsPdpEntity);
- droolsPdpEntity.setPdpId(pdp.getPdpId());
- }
- if (droolsPdpEntity.getPriority() != pdp.getPriority()) {
- droolsPdpEntity.setPriority(pdp.getPriority());
- }
- if (!droolsPdpEntity.getUpdatedDate().equals(pdp.getUpdatedDate())) {
- droolsPdpEntity.setUpdatedDate(pdp.getUpdatedDate());
- }
- if (!nullSafeEquals(droolsPdpEntity.getSite(), pdp.getSite())) {
- droolsPdpEntity.setSite(pdp.getSite());
- }
-
- if (droolsPdpEntity.isDesignated() != pdp.isDesignated()) {
- logger.debug("update: pdpId={}"
- + ", pdp.isDesignated={}"
- + ", droolsPdpEntity.pdpId= {}"
- + ", droolsPdpEntity.isDesignated={}",
- pdp.getPdpId(), pdp.isDesignated(),
- droolsPdpEntity.getPdpId(), droolsPdpEntity.isDesignated());
- droolsPdpEntity.setDesignated(pdp.isDesignated());
- //The isDesignated value is not the same and the new one == true
- if (pdp.isDesignated()) {
- droolsPdpEntity.setDesignatedDate(currentTime.getDate());
- }
- }
- em.getTransaction().commit();
- } finally {
- cleanup(em, "update");
- }
-
- logger.debug("update: Exiting");
-
- }
-
- /*
- * Note: A side effect of this boolean method is that if the PDP is designated but not current, the
- * droolspdpentity.DESIGNATED column will be set to false (the PDP will be un-designated, i.e. marked as
- * being in standby mode)
- */
- @Override
- public boolean isPdpCurrent(DroolsPdp pdp) {
-
- boolean isCurrent = isCurrent(pdp);
-
- var em = emf.createEntityManager();
- try {
- if (!isCurrent && pdp.isDesignated()) {
- em.getTransaction().begin();
- var droolsPdpsListQuery = em.createQuery(SELECT_PDP_BY_ID, DroolsPdpEntity.class);
- droolsPdpsListQuery.setParameter(PDP_ID_PARAM, pdp.getPdpId());
- List<DroolsPdpEntity> droolsPdpsList = droolsPdpsListQuery.setLockMode(LockModeType.NONE)
- .setFlushMode(FlushModeType.COMMIT).getResultList();
- if (droolsPdpsList.size() == 1) {
- logger.debug("isPdpCurrent: PDP={} designated but not current; setting designated to false",
- pdp.getPdpId());
- var droolsPdpEntity = droolsPdpsList.get(0);
- droolsPdpEntity.setDesignated(false);
- em.getTransaction().commit();
- } else {
- logger.warn("isPdpCurrent: PDP={} is designated but not current; "
- + "however it does not have a DB entry, so cannot set DESIGNATED to false!",
- pdp.getPdpId());
- }
- } else {
- logger.debug("isPdpCurrent: For PDP= {}, "
- + "designated={}, isCurrent={}", pdp.getPdpId(), pdp.isDesignated(), isCurrent);
- }
- } catch (Exception e) {
- logger.error("Could not update expired record marked as designated in the database", e);
- } finally {
- cleanup(em, "isPdpCurrent");
- }
- return isCurrent;
-
- }
-
- @Override
- public void setDesignated(DroolsPdp pdp, boolean designated) {
-
- logger.debug("setDesignated: Entering, pdpId={}"
- + ", designated={}", pdp.getPdpId(), designated);
-
- EntityManager em = null;
- try {
- em = emf.createEntityManager();
- em.getTransaction().begin();
- var droolsPdpsListQuery = em
- .createQuery(SELECT_PDP_BY_ID, DroolsPdpEntity.class);
- droolsPdpsListQuery.setParameter(PDP_ID_PARAM, pdp.getPdpId());
- List<DroolsPdpEntity> droolsPdpsList = droolsPdpsListQuery.setLockMode(
- LockModeType.NONE).setFlushMode(FlushModeType.COMMIT).getResultList();
- if (droolsPdpsList.size() == 1) {
- var droolsPdpEntity = droolsPdpsList.get(0);
-
- logger.debug("setDesignated: PDP={}"
- + " found, designated= {}"
- + ", setting to {}", pdp.getPdpId(), droolsPdpEntity.isDesignated(),
- designated);
- setPdpDesignation(em, droolsPdpEntity, designated);
- em.getTransaction().commit();
- } else {
- logger.error("setDesignated: PDP={}"
- + " not in DB; cannot update designation", pdp.getPdpId());
- }
- } catch (Exception e) {
- logger.error("setDesignated: Caught Exception", e);
- } finally {
- cleanup(em, "setDesignated");
- }
-
- logger.debug("setDesignated: Exiting");
-
- }
-
- 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(currentTime.getDate());
- }
-
- }
- }
-
-
- @Override
- public void standDownPdp(String pdpId) {
- logger.debug("standDownPdp: Entering, pdpId={}", pdpId);
-
- EntityManager em = null;
- try {
- /*
- * Start transaction.
- */
- em = emf.createEntityManager();
- em.getTransaction().begin();
-
- /*
- * Get droolspdpentity record for this PDP and mark DESIGNATED as
- * false.
- */
- var droolsPdpsListQuery = em
- .createQuery(SELECT_PDP_BY_ID, DroolsPdpEntity.class);
- droolsPdpsListQuery.setParameter(PDP_ID_PARAM, pdpId);
- List<DroolsPdpEntity> droolsPdpsList = droolsPdpsListQuery.setLockMode(
- LockModeType.NONE).setFlushMode(FlushModeType.COMMIT).getResultList();
- if (droolsPdpsList.size() == 1) {
- var droolsPdpEntity = droolsPdpsList.get(0);
- droolsPdpEntity.setDesignated(false);
- em.persist(droolsPdpEntity);
- logger.debug("standDownPdp: PDP={} persisted as non-designated.", pdpId);
- } else {
- logger.error("standDownPdp: Missing record in droolspdpentity for pdpId={}"
- + "; cannot stand down PDP", pdpId);
- }
-
- /*
- * End transaction.
- */
- em.getTransaction().commit();
- cleanup(em, "standDownPdp");
- em = null;
-
- // Keep the election handler in sync with the DB
- DroolsPdpsElectionHandler.setMyPdpDesignated(false);
-
- } catch (Exception e) {
- logger.error("standDownPdp: Unexpected Exception attempting to mark "
- + "DESIGNATED as false for droolspdpentity, pdpId={}"
- + ". Cannot stand down PDP; message={}", pdpId, e.getMessage(), e);
- } finally {
- cleanup(em, "standDownPdp");
- }
- logger.debug("standDownPdp: Exiting");
-
- }
-
- /*
- * Determines whether or not a designated PDP has failed.
- *
- * Note: The update method, which is run periodically by the
- * TimerUpdateClass, will un-designate a PDP that is stale.
- */
- @Override
- public boolean hasDesignatedPdpFailed(Collection<DroolsPdp> pdps) {
-
- logger.debug("hasDesignatedPdpFailed: Entering, pdps.size()={}", pdps.size());
-
- var failed = true;
- var foundDesignatedPdp = false;
-
- for (DroolsPdp pdp : pdps) {
-
- /*
- * Normally, the update method will un-designate any stale PDP, but
- * we check here to see if the PDP has gone stale since the update
- * method was run.
- *
- * Even if we determine that the designated PDP is current, we keep
- * going (we don't break), so we can get visibility into the other
- * PDPs, when in DEBUG mode.
- */
- if (pdp.isDesignated() && isCurrent(pdp)) {
- logger.debug("hasDesignatedPdpFailed: Designated PDP={} is current", pdp.getPdpId());
- failed = false;
- foundDesignatedPdp = true;
- } else if (pdp.isDesignated() && !isCurrent(pdp)) {
- logger.error("hasDesignatedPdpFailed: Designated PDP={} has failed", pdp.getPdpId());
- foundDesignatedPdp = true;
- } else {
- logger.debug("hasDesignatedPdpFailed: PDP={} is not designated", pdp.getPdpId());
- }
- }
-
- logger.debug("hasDesignatedPdpFailed: Exiting and returning, foundDesignatedPdp={}",
- foundDesignatedPdp);
- return failed;
- }
-
-
- private boolean isCurrent(DroolsPdp pdp) {
-
- logger.debug("isCurrent: Entering, pdpId={}", pdp.getPdpId());
-
- var current = false;
-
- // Return if the current PDP is considered "current" based on whatever
- // time box that may be.
- // If the the PDP is not current, we should mark it as not primary in
- // the database
- var currentDate = currentTime.getDate();
- long difference = currentDate.getTime()
- - pdp.getUpdatedDate().getTime();
- // just set some kind of default here
- long pdpTimeout = 15000;
- try {
- pdpTimeout = Long.parseLong(ActiveStandbyProperties
- .getProperty(ActiveStandbyProperties.PDP_TIMEOUT));
- logger.debug("isCurrent: pdp.timeout={}", pdpTimeout);
- } catch (Exception e) {
- logger.error("isCurrent: Could not get PDP timeout property, using default.", e);
- }
- current = difference < pdpTimeout;
-
- logger.debug("isCurrent: Exiting, difference={}, pdpTimeout={}"
- + "; returning current={}", difference, pdpTimeout, current);
-
- return current;
- }
-
-
- /*
- * Currently this method is only used in a JUnit test environment. Gets a
- * PDP record from droolspdpentity table.
- */
- @Override
- public DroolsPdpEntity getPdp(String pdpId) {
-
- logger.debug("getPdp: Entering and getting PDP with pdpId={}", pdpId);
-
- DroolsPdpEntity droolsPdpEntity = null;
-
- EntityManager em = null;
- try {
- em = emf.createEntityManager();
- em.getTransaction().begin();
- var droolsPdpsListQuery = em
- .createQuery(SELECT_PDP_BY_ID);
- droolsPdpsListQuery.setParameter(PDP_ID_PARAM, pdpId);
- List<?> droolsPdpsList = droolsPdpsListQuery.setLockMode(
- LockModeType.NONE).setFlushMode(FlushModeType.COMMIT).getResultList();
- if (droolsPdpsList.size() == 1
- && droolsPdpsList.get(0) instanceof DroolsPdpEntity) {
- droolsPdpEntity = (DroolsPdpEntity) droolsPdpsList.get(0);
- logger.debug("getPdp: PDP={}"
- + " found, isDesignated={},"
- + " updatedDate={}, "
- + "priority={}", pdpId,
- droolsPdpEntity.isDesignated(), droolsPdpEntity.getUpdatedDate(),
- droolsPdpEntity.getPriority());
-
- // Make sure the droolsPdpEntity is not a cached version
- em.refresh(droolsPdpEntity);
-
- em.getTransaction().commit();
- } else {
- logger.error("getPdp: PDP={} not found!?", pdpId);
- }
- } catch (Exception e) {
- logger.error("getPdp: Caught Exception attempting to get PDP", e);
- } finally {
- cleanup(em, "getPdp");
- }
-
- logger.debug("getPdp: Returning droolsPdpEntity={}", droolsPdpEntity);
- return droolsPdpEntity;
-
- }
-
- /*
- * Normally this method should only be used in a JUnit test environment.
- * Manually inserts a PDP record in droolspdpentity table.
- */
- @Override
- public void insertPdp(DroolsPdp pdp) {
- logger.debug("insertPdp: Entering and manually inserting PDP");
-
- /*
- * Start transaction
- */
- var em = emf.createEntityManager();
- try {
- em.getTransaction().begin();
-
- /*
- * Insert record.
- */
- var droolsPdpEntity = new DroolsPdpEntity();
- em.persist(droolsPdpEntity);
- droolsPdpEntity.setPdpId(pdp.getPdpId());
- droolsPdpEntity.setDesignated(pdp.isDesignated());
- droolsPdpEntity.setPriority(pdp.getPriority());
- droolsPdpEntity.setUpdatedDate(pdp.getUpdatedDate());
- droolsPdpEntity.setSite(pdp.getSite());
-
- /*
- * End transaction.
- */
- em.getTransaction().commit();
- } finally {
- cleanup(em, "insertPdp");
- }
- logger.debug("insertPdp: Exiting");
-
- }
-
- /*
- * Normally this method should only be used in a JUnit test environment.
- * Manually deletes all PDP records in droolspdpentity table.
- */
- @Override
- public void deleteAllPdps() {
-
- logger.debug("deleteAllPdps: Entering");
-
- /*
- * Start transaction
- */
- var em = emf.createEntityManager();
- try {
- em.getTransaction().begin();
-
- var droolsPdpsListQuery = em
- .createQuery("SELECT p FROM DroolsPdpEntity p");
- @SuppressWarnings("unchecked")
- List<DroolsPdp> droolsPdpsList = droolsPdpsListQuery.setLockMode(
- LockModeType.NONE).setFlushMode(FlushModeType.COMMIT).getResultList();
- logger.debug("deleteAllPdps: Deleting {} PDPs", droolsPdpsList.size());
- for (DroolsPdp droolsPdp : droolsPdpsList) {
- String pdpId = droolsPdp.getPdpId();
- deletePdp(pdpId);
- }
-
- /*
- * End transaction.
- */
- em.getTransaction().commit();
- } finally {
- cleanup(em, "deleteAllPdps");
- }
- logger.debug("deleteAllPdps: Exiting");
-
- }
-
- /*
- * Normally this method should only be used in a JUnit test environment.
- * Manually deletes a PDP record in droolspdpentity table.
- */
- @Override
- public void deletePdp(String pdpId) {
- logger.debug("deletePdp: Entering and manually deleting pdpId={}", pdpId);
-
- /*
- * Start transaction
- */
- var em = emf.createEntityManager();
- try {
- em.getTransaction().begin();
-
- /*
- * Delete record.
- */
- var droolsPdpEntity = em.find(DroolsPdpEntity.class, pdpId);
- if (droolsPdpEntity != null) {
- logger.debug("deletePdp: Removing PDP");
- em.remove(droolsPdpEntity);
- } else {
- logger.debug("deletePdp: PDP with ID={} not currently in DB", pdpId);
- }
-
- /*
- * End transaction.
- */
- em.getTransaction().commit();
- } finally {
- cleanup(em, "deletePdp");
- }
- logger.debug("deletePdp: Exiting");
-
- }
-
- /*
- * Close the specified EntityManager, rolling back any pending transaction
- *
- * @param em the EntityManager to close ('null' is OK)
- * @param method the invoking Java method (used for log messages)
- */
- private static void cleanup(EntityManager em, String method) {
- if (em != null && em.isOpen()) {
- if (em.getTransaction().isActive()) {
- // there is an active EntityTransaction -- roll it back
- try {
- em.getTransaction().rollback();
- } catch (Exception e) {
- logger.error("{}: Caught Exception attempting to rollback EntityTransaction", method, e);
- }
- }
-
- // now, close the EntityManager
- try {
- em.close();
- } catch (Exception e) {
- logger.error("{}: Caught Exception attempting to close EntityManager", method, e);
- }
- }
- }
-}
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
deleted file mode 100644
index 1756246b..00000000
--- a/feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/PmStandbyStateChangeNotifier.java
+++ /dev/null
@@ -1,310 +0,0 @@
-/*
- * ============LICENSE_START=======================================================
- * feature-active-standby-management
- * ================================================================================
- * Copyright (C) 2017-2019, 2021 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=========================================================
- */
-
-package org.onap.policy.drools.activestandby;
-
-import java.util.Timer;
-import java.util.TimerTask;
-import lombok.Getter;
-import org.onap.policy.common.im.MonitorTime;
-import org.onap.policy.common.im.StateChangeNotifier;
-import org.onap.policy.common.im.StateManagement;
-import org.onap.policy.common.utils.time.CurrentTime;
-import org.onap.policy.drools.system.PolicyEngine;
-import org.onap.policy.drools.system.PolicyEngineConstants;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-/*
- * Some background:
- *
- * Originally, there was a "StandbyStateChangeNotifier" that belonged to policy-core, and this class's
- * handleStateChange() method used to take care of invoking conn.standDownPdp().
- *
- * But testing revealed that when a state change to hot standby
- * occurred from a demote() operation, first the PMStandbyStateChangeNotifier.handleStateChange() method
- * would be invoked and then the StandbyStateChangeNotifier.handleStateChange() method would be invoked,
- * and this ordering was creating the following problem:
- *
- * When PMStandbyStateChangeNotifier.handleStateChange() was invoked it would take a long time to finish,
- * because it would result in SingleThreadedUebTopicSource.stop() being invoked, which can potentially do a
- * 5 second sleep for each controller being stopped.
- *
- * Meanwhile, as these controller stoppages and their associated sleeps were occurring, the election handler
- * would discover the demoted PDP in hotstandby (but still designated!) and promote it, resulting in the
- * standbyStatus going from hotstandby to providingservice. So then, by the time that
- * PMStandbyStateChangeNotifier.handleStateChange() finished its work and
- * StandbyStateChangeNotifier.handleStateChange() started executing, the standbyStatus was no longer hotstandby
- * (as effected by the demote), but providingservice (as reset by the election handling logic) and
- * conn.standDownPdp() would not get called!
- *
- * To fix this bug, we consolidated StandbyStateChangeNotifier and PMStandbyStateChangeNotifier,
- * with the standDownPdp() always
- * being invoked prior to the TopicEndpoint.manager.lock(). In this way, when the election handling logic is invoked
- * during the controller stoppages, the PDP is in hotstandby and the standdown occurs.
- *
- */
-public class PmStandbyStateChangeNotifier extends StateChangeNotifier {
- // get an instance of logger
- private static final Logger logger = LoggerFactory.getLogger(PmStandbyStateChangeNotifier.class);
- private Timer delayActivateTimer;
- private boolean isWaitingForActivation;
- private long startTimeWaitingForActivationMs;
- private long waitInterval;
- private boolean isNowActivating;
- @Getter
- private String previousStandbyStatus;
- private final CurrentTime currentTime = MonitorTime.getInstance();
- private final Factory timerFactory = Factory.getInstance();
- public static final String NONE = "none";
- public static final String UNSUPPORTED = "unsupported";
- public static final String HOTSTANDBY_OR_COLDSTANDBY = "hotstandby_or_coldstandby";
-
- /**
- * Constructor.
- *
- */
- public PmStandbyStateChangeNotifier() {
- var pdpUpdateInterval =
- Integer.parseInt(ActiveStandbyProperties.getProperty(ActiveStandbyProperties.PDP_UPDATE_INTERVAL));
- isWaitingForActivation = false;
- startTimeWaitingForActivationMs = currentTime.getMillis();
- // delay the activate so the DesignatedWaiter can run twice - give it an extra 2 seconds
- waitInterval = 2 * pdpUpdateInterval + 2000L;
- isNowActivating = false;
- previousStandbyStatus = PmStandbyStateChangeNotifier.NONE;
- }
-
- @Override
- public void handleStateChange() {
- /*
- * A note on synchronization: This method is not synchronized because the caller,
- * stateManagememt, has synchronize all of its methods. Only one stateManagement operation
- * can occur at a time. Thus, only one handleStateChange() call will ever be made at a time.
- */
- logger.debug("handleStateChange: Entering, message={}, standbyStatus={}", super.getMessage(),
- super.getStateManagement().getStandbyStatus());
- String standbyStatus = super.getStateManagement().getStandbyStatus();
- String pdpId = ActiveStandbyProperties.getProperty(ActiveStandbyProperties.NODE_NAME);
-
- logger.debug("handleStateChange: previousStandbyStatus = {}; standbyStatus = {}",
- previousStandbyStatus, standbyStatus);
-
- if (standbyStatus == null || standbyStatus.equals(StateManagement.NULL_VALUE)) {
- logger.debug("handleStateChange: standbyStatus is null; standing down PDP={}", pdpId);
- standDownPdpNull(pdpId);
-
- } else if (standbyStatus.equals(StateManagement.HOT_STANDBY)
- || standbyStatus.equals(StateManagement.COLD_STANDBY)) {
- logger.debug("handleStateChange: standbyStatus={}; standing down PDP={}", standbyStatus, pdpId);
- standDownPdp(pdpId, standbyStatus);
-
- } else if (standbyStatus.equals(StateManagement.PROVIDING_SERVICE)) {
- logger.debug("handleStateChange: standbyStatus= {} scheduling activation of PDP={}", standbyStatus,
- pdpId);
- schedulePdpActivation(pdpId, standbyStatus);
-
- } else {
- logger.error("handleStateChange: Unsupported standbyStatus={}; standing down PDP={}", standbyStatus, pdpId);
- standDownPdpUnsupported(pdpId, standbyStatus);
- }
-
- logger.debug("handleStateChange: Exiting");
- }
-
- 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;
- }
-
- 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);
- }
- }
-
- 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();
- delayActivateTimer = timerFactory.makeTimer();
- // delay the activate so the DesignatedWaiter can run twice
- delayActivateTimer.schedule(new DelayActivateClass(), waitInterval);
- isWaitingForActivation = true;
- startTimeWaitingForActivationMs = currentTime.getMillis();
- 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 = currentTime.getMillis();
- 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);
- }
- }
-
- private void cancelTimer() {
- if (delayActivateTimer != null) {
- delayActivateTimer.cancel();
- }
- }
-
- private class DelayActivateClass extends TimerTask {
-
- private Object delayActivateLock = new Object();
-
-
- @Override
- public void run() {
- isNowActivating = true;
- try {
- logger.debug("DelayActivateClass.run: entry");
- synchronized (delayActivateLock) {
- getPolicyEngineManager().activate();
- // The state change fully succeeded
- previousStandbyStatus = StateManagement.PROVIDING_SERVICE;
- // We want to set this to false here because the activate call can take a while
- isWaitingForActivation = false;
- isNowActivating = false;
- }
- logger.debug("DelayActivateClass.run.exit");
- } catch (Exception e) {
- isWaitingForActivation = false;
- isNowActivating = false;
- logger.warn("DelayActivateClass.run: caught an unexpected exception "
- + "calling PolicyEngineConstants.getManager().activate: ", e);
- }
- }
- }
-
- // these may be overridden by junit tests
-
- protected PolicyEngine getPolicyEngineManager() {
- return PolicyEngineConstants.getManager();
- }
-}
diff --git a/feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/ThreadRunningChecker.java b/feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/ThreadRunningChecker.java
deleted file mode 100644
index d359b5a6..00000000
--- a/feature-active-standby-management/src/main/java/org/onap/policy/drools/activestandby/ThreadRunningChecker.java
+++ /dev/null
@@ -1,27 +0,0 @@
-/*
- * ============LICENSE_START=======================================================
- * feature-active-standby-management
- * ================================================================================
- * Copyright (C) 2017-2018 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=========================================================
- */
-
-package org.onap.policy.drools.activestandby;
-
-@FunctionalInterface
-public interface ThreadRunningChecker {
- void checkThreadStatus();
-
-}
diff --git a/feature-active-standby-management/src/main/resources/META-INF/persistence.xml b/feature-active-standby-management/src/main/resources/META-INF/persistence.xml
deleted file mode 100644
index 36f65ad8..00000000
--- a/feature-active-standby-management/src/main/resources/META-INF/persistence.xml
+++ /dev/null
@@ -1,35 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!--
- ============LICENSE_START=======================================================
- feature-active-standby-management
- ================================================================================
- Copyright (C) 2017-2018 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=========================================================
- -->
-
-<persistence version="2.1"
- xmlns="http://xmlns.jcp.org/xml/ns/persistence"
- xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
- xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/persistence http://xmlns.jcp.org/xml/ns/persistence/persistence_2_1.xsd">
- <persistence-unit name="activeStandbyPU"
- transaction-type="RESOURCE_LOCAL">
- <!-- This is for database access by non-drools methods -->
- <provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
- <class>org.onap.policy.drools.activestandby.DroolsPdpEntity</class>
- <properties>
- <!-- Properties are passed in -->
- </properties>
- </persistence-unit>
-</persistence>
diff --git a/feature-active-standby-management/src/main/resources/META-INF/services/org.onap.policy.drools.activestandby.ActiveStandbyFeatureApi b/feature-active-standby-management/src/main/resources/META-INF/services/org.onap.policy.drools.activestandby.ActiveStandbyFeatureApi
deleted file mode 100644
index 5296f8b7..00000000
--- a/feature-active-standby-management/src/main/resources/META-INF/services/org.onap.policy.drools.activestandby.ActiveStandbyFeatureApi
+++ /dev/null
@@ -1 +0,0 @@
-org.onap.policy.drools.activestandby.ActiveStandbyFeature
diff --git a/feature-active-standby-management/src/main/resources/META-INF/services/org.onap.policy.drools.core.PolicySessionFeatureApi b/feature-active-standby-management/src/main/resources/META-INF/services/org.onap.policy.drools.core.PolicySessionFeatureApi
deleted file mode 100644
index 5296f8b7..00000000
--- a/feature-active-standby-management/src/main/resources/META-INF/services/org.onap.policy.drools.core.PolicySessionFeatureApi
+++ /dev/null
@@ -1 +0,0 @@
-org.onap.policy.drools.activestandby.ActiveStandbyFeature
diff --git a/feature-active-standby-management/src/main/resources/META-INF/services/org.onap.policy.drools.features.PolicyEngineFeatureApi b/feature-active-standby-management/src/main/resources/META-INF/services/org.onap.policy.drools.features.PolicyEngineFeatureApi
deleted file mode 100644
index 5296f8b7..00000000
--- a/feature-active-standby-management/src/main/resources/META-INF/services/org.onap.policy.drools.features.PolicyEngineFeatureApi
+++ /dev/null
@@ -1 +0,0 @@
-org.onap.policy.drools.activestandby.ActiveStandbyFeature