diff options
Diffstat (limited to 'feature-distributed-locking')
5 files changed, 65 insertions, 29 deletions
diff --git a/feature-distributed-locking/src/main/feature/db/pooling/sql/1811-distributedlocking.downgrade.sql b/feature-distributed-locking/src/main/feature/db/pooling/sql/1811-distributedlocking.downgrade.sql new file mode 100644 index 00000000..33f6154d --- /dev/null +++ b/feature-distributed-locking/src/main/feature/db/pooling/sql/1811-distributedlocking.downgrade.sql @@ -0,0 +1,19 @@ +# ============LICENSE_START======================================================= +# feature-distributed-locking +# ================================================================================ +# Copyright (C) 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========================================================= + +ALTER TABLE pooling.locks modify if exists expirationTime bigint(20); diff --git a/feature-distributed-locking/src/main/feature/db/pooling/sql/1811-distributedlocking.upgrade.sql b/feature-distributed-locking/src/main/feature/db/pooling/sql/1811-distributedlocking.upgrade.sql new file mode 100644 index 00000000..7862da9f --- /dev/null +++ b/feature-distributed-locking/src/main/feature/db/pooling/sql/1811-distributedlocking.upgrade.sql @@ -0,0 +1,23 @@ +# ============LICENSE_START======================================================= +# feature-distributed-locking +# ================================================================================ +# Copyright (C) 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========================================================= + + set foreign_key_checks=0; + + ALTER TABLE pooling.locks modify if exists expirationTime timestamp default 0; + + set foreign_key_checks=1; diff --git a/feature-distributed-locking/src/main/java/org/onap/policy/distributed/locking/DistributedLockingFeature.java b/feature-distributed-locking/src/main/java/org/onap/policy/distributed/locking/DistributedLockingFeature.java index 03872e1e..88035ca7 100644 --- a/feature-distributed-locking/src/main/java/org/onap/policy/distributed/locking/DistributedLockingFeature.java +++ b/feature-distributed-locking/src/main/java/org/onap/policy/distributed/locking/DistributedLockingFeature.java @@ -152,11 +152,11 @@ public class DistributedLockingFeature implements PolicyEngineFeatureAPI, Policy private void cleanLockTable() { try (Connection conn = dataSource.getConnection(); - PreparedStatement statement = conn.prepareStatement("DELETE FROM pooling.locks WHERE host = ? OR expirationTime < ?"); + PreparedStatement statement = conn.prepareStatement( + "DELETE FROM pooling.locks WHERE host = ? OR expirationTime < now()"); ){ statement.setString(1, uuid.toString()); - statement.setLong(2, System.currentTimeMillis()); statement.executeUpdate(); } catch (SQLException e) { diff --git a/feature-distributed-locking/src/main/java/org/onap/policy/distributed/locking/TargetLock.java b/feature-distributed-locking/src/main/java/org/onap/policy/distributed/locking/TargetLock.java index 0853f125..fe6f2fe0 100644 --- a/feature-distributed-locking/src/main/java/org/onap/policy/distributed/locking/TargetLock.java +++ b/feature-distributed-locking/src/main/java/org/onap/policy/distributed/locking/TargetLock.java @@ -25,7 +25,6 @@ import java.sql.ResultSet; import java.sql.SQLException; import java.util.UUID; import org.apache.commons.dbcp2.BasicDataSource; -import java.util.concurrent.TimeUnit; import org.slf4j.Logger; import org.slf4j.LoggerFactory; @@ -72,7 +71,7 @@ public class TargetLock { */ public boolean lock(int holdSec) { - return grabLock(TimeUnit.SECONDS.toMillis(holdSec)); + return grabLock(holdSec); } /** @@ -86,27 +85,27 @@ public class TargetLock { * "Grabs" lock by attempting to insert a new record in the db. * If the insert fails due to duplicate key error resource is already locked * so we call secondGrab. - * @param holdMs the amount of time, in milliseconds, that the lock should be held + * @param holdSec the amount of time, in seconds, that the lock should be held */ - private boolean grabLock(long holdMs) { + private boolean grabLock(int holdSec) { // try to insert a record into the table(thereby grabbing the lock) try (Connection conn = dataSource.getConnection(); PreparedStatement statement = conn.prepareStatement( - "INSERT INTO pooling.locks (resourceId, host, owner, expirationTime) values (?, ?, ?, ?)")) { + "INSERT INTO pooling.locks (resourceId, host, owner, expirationTime) values (?, ?, ?, timestampadd(second, ?, now()))")) { int i = 1; statement.setString(i++, this.resourceId); statement.setString(i++, this.uuid.toString()); statement.setString(i++, this.owner); - statement.setLong(i++, System.currentTimeMillis() + holdMs); + statement.setInt(i++, holdSec); statement.executeUpdate(); } catch (SQLException e) { logger.error("error in TargetLock.grabLock()", e); - return secondGrab(holdMs); + return secondGrab(holdSec); } return true; @@ -115,25 +114,24 @@ public class TargetLock { /** * A second attempt at grabbing a lock. It first attempts to update the lock in case it is expired. * If that fails, it attempts to insert a new record again - * @param holdMs the amount of time, in milliseconds, that the lock should be held + * @param holdSec the amount of time, in seconds, that the lock should be held */ - private boolean secondGrab(long holdMs) { + private boolean secondGrab(int holdSec) { try (Connection conn = dataSource.getConnection(); PreparedStatement updateStatement = conn.prepareStatement( - "UPDATE pooling.locks SET host = ?, owner = ?, expirationTime = ? WHERE resourceId = ? AND (owner = ? OR expirationTime <= ?)"); + "UPDATE pooling.locks SET host = ?, owner = ?, expirationTime = timestampadd(second, ?, now()) WHERE resourceId = ? AND (owner = ? OR expirationTime < now())"); PreparedStatement insertStatement = conn.prepareStatement( - "INSERT INTO pooling.locks (resourceId, host, owner, expirationTime) values (?, ?, ?, ?)");) { + "INSERT INTO pooling.locks (resourceId, host, owner, expirationTime) values (?, ?, ?, timestampadd(second, ?, now()))");) { int i = 1; updateStatement.setString(i++, this.uuid.toString()); updateStatement.setString(i++, this.owner); - updateStatement.setLong(i++, System.currentTimeMillis() + holdMs); + updateStatement.setInt(i++, holdSec); updateStatement.setString(i++, this.resourceId); updateStatement.setString(i++, this.owner); - updateStatement.setLong(i++, System.currentTimeMillis()); // The lock was expired and we grabbed it. // return true @@ -148,7 +146,7 @@ public class TargetLock { insertStatement.setString(i++, this.resourceId); insertStatement.setString(i++, this.uuid.toString()); insertStatement.setString(i++, this.owner); - insertStatement.setLong(i++, System.currentTimeMillis() + holdMs); + insertStatement.setInt(i++, holdSec); // If our insert returns 1 we successfully grabbed the lock return (insertStatement.executeUpdate() == 1); @@ -191,12 +189,11 @@ public class TargetLock { try (Connection conn = dataSource.getConnection(); PreparedStatement selectStatement = conn.prepareStatement( - "SELECT * FROM pooling.locks WHERE resourceId = ? AND host = ? AND owner= ? AND expirationTime >= ?")) { + "SELECT * FROM pooling.locks WHERE resourceId = ? AND host = ? AND owner= ? AND expirationTime >= now()")) { selectStatement.setString(1, this.resourceId); selectStatement.setString(2, this.uuid.toString()); selectStatement.setString(3, this.owner); - selectStatement.setLong(4, System.currentTimeMillis()); try (ResultSet result = selectStatement.executeQuery()) { // This will return true if the @@ -221,10 +218,9 @@ public class TargetLock { try (Connection conn = dataSource.getConnection(); PreparedStatement selectStatement = conn - .prepareStatement("SELECT * FROM pooling.locks WHERE resourceId = ? AND expirationTime >= ?")) { + .prepareStatement("SELECT * FROM pooling.locks WHERE resourceId = ? AND expirationTime >= now()")) { selectStatement.setString(1, this.resourceId); - selectStatement.setLong(2, System.currentTimeMillis()); try (ResultSet result = selectStatement.executeQuery()) { // This will return true if the // query returned at least one row diff --git a/feature-distributed-locking/src/test/java/org/onap/policy/distributed/locking/TargetLockTest.java b/feature-distributed-locking/src/test/java/org/onap/policy/distributed/locking/TargetLockTest.java index a4c292c1..c1b46d67 100644 --- a/feature-distributed-locking/src/test/java/org/onap/policy/distributed/locking/TargetLockTest.java +++ b/feature-distributed-locking/src/test/java/org/onap/policy/distributed/locking/TargetLockTest.java @@ -80,10 +80,9 @@ public class TargetLockTest { assertEquals(OperResult.OPER_ACCEPTED, distLockFeat.beforeLock("resource1", "owner1", MAX_AGE_SEC)); //attempt to grab expiredLock - try (PreparedStatement updateStatement = conn.prepareStatement("UPDATE pooling.locks SET expirationTime = ? WHERE resourceId = ?");) + try (PreparedStatement updateStatement = conn.prepareStatement("UPDATE pooling.locks SET expirationTime = timestampadd(second, -1, now()) WHERE resourceId = ?");) { - updateStatement.setLong(1, System.currentTimeMillis() - 1000); - updateStatement.setString(2, "resource1"); + updateStatement.setString(1, "resource1"); updateStatement.executeUpdate(); } catch (SQLException e) { @@ -104,8 +103,8 @@ public class TargetLockTest { distLockFeat.beforeLock("resource1", "owner1", MAX_AGE_SEC); //force lock to expire - try (PreparedStatement lockExpire = conn.prepareStatement("UPDATE pooling.locks SET expirationTime = ?");) { - lockExpire.setLong(1, System.currentTimeMillis() - MAX_AGE_SEC - 1); + try (PreparedStatement lockExpire = conn.prepareStatement("UPDATE pooling.locks SET expirationTime = timestampadd(second, -?, now())");) { + lockExpire.setInt(1, MAX_AGE_SEC + 1); lockExpire.executeUpdate(); } @@ -139,9 +138,8 @@ public class TargetLockTest { // isActive on expiredLock try (PreparedStatement updateStatement = conn - .prepareStatement("UPDATE pooling.locks SET expirationTime = ? WHERE resourceId = ?");) { - updateStatement.setLong(1, System.currentTimeMillis() - 5000); - updateStatement.setString(2, "resource1"); + .prepareStatement("UPDATE pooling.locks SET expirationTime = timestampadd(second, -5, now()) WHERE resourceId = ?");) { + updateStatement.setString(1, "resource1"); updateStatement.executeUpdate(); } catch (SQLException e) { @@ -183,7 +181,7 @@ public class TargetLockTest { } private static void createTable() { - String createString = "create table if not exists pooling.locks (resourceId VARCHAR(128), host VARCHAR(128), owner VARCHAR(128), expirationTime BIGINT, PRIMARY KEY (resourceId))"; + String createString = "create table if not exists pooling.locks (resourceId VARCHAR(128), host VARCHAR(128), owner VARCHAR(128), expirationTime TIMESTAMP DEFAULT 0, PRIMARY KEY (resourceId))"; try (PreparedStatement createStmt = conn.prepareStatement(createString);) { createStmt.executeUpdate(); |