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@ -49,7 +49,6 @@ public class GenericHeartBeatDAOImpl implements HeartBeatDAO {
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@Override
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public String recordServerCtx(ServerContext ctx) throws HeartBeatDAOException {
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PreparedStatement stmt = null;
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String uuid = null;
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try {
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Connection conn = HeartBeatBeaconDAOFactory.getConnection();
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@ -57,7 +56,7 @@ public class GenericHeartBeatDAOImpl implements HeartBeatDAO {
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String sql;
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sql = "INSERT INTO SERVER_HEART_BEAT_EVENTS(HOST_NAME, UUID, SERVER_PORT) VALUES (?, ?, ?)";
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stmt = conn.prepareStatement(sql, Statement.RETURN_GENERATED_KEYS);
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try (PreparedStatement stmt = conn.prepareStatement(sql, Statement.RETURN_GENERATED_KEYS)) {
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stmt.setString(1, ctx.getHostName());
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stmt.setString(2, serverUUID);
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stmt.setInt(3, ctx.getCarbonServerPort());
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@ -65,159 +64,159 @@ public class GenericHeartBeatDAOImpl implements HeartBeatDAO {
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if (stmt.executeUpdate() > 0) {
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uuid = serverUUID;
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}
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}
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} catch (SQLException e) {
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throw new HeartBeatDAOException("Error occurred while persisting server context for : '" +
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String msg = "Error occurred while persisting server context for : '" +
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"port '" + ctx.getCarbonServerPort() + "' " +
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"hostname : '" + ctx.getHostName() + "' ", e);
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} finally {
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HeartBeatBeaconDAOUtil.cleanupResources(stmt, null);
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"hostname : '" + ctx.getHostName() + "'";
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log.error(msg, e);
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throw new HeartBeatDAOException(msg, e);
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}
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return uuid;
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}
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@Override
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public boolean recordElectedCandidate(String serverUUID) throws HeartBeatDAOException {
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PreparedStatement stmt = null;
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try {
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Connection conn = HeartBeatBeaconDAOFactory.getConnection();
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String sql;
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sql = "INSERT INTO ELECTED_LEADER_META_INFO(UUID) VALUES (?)";
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stmt = conn.prepareStatement(sql, Statement.RETURN_GENERATED_KEYS);
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try (PreparedStatement stmt = conn.prepareStatement(sql, Statement.RETURN_GENERATED_KEYS)) {
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stmt.setString(1, serverUUID);
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return stmt.executeUpdate() > 0;
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}
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} catch (SQLException e) {
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throw new HeartBeatDAOException("Error occurred while persisting UUID of chosen " +
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"elected dynamic task execution candidate : " + serverUUID , e);
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} finally {
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HeartBeatBeaconDAOUtil.cleanupResources(stmt, null);
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String msg = "Error occurred while persisting UUID of chosen " +
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"elected dynamic task execution candidate : " + serverUUID;
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log.error(msg, e);
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throw new HeartBeatDAOException(msg, e);
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}
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}
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@Override
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public void purgeCandidates() throws HeartBeatDAOException {
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Statement stmt = null;
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try {
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Connection conn = HeartBeatBeaconDAOFactory.getConnection();
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conn.setAutoCommit(false);
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String sql = "TRUNCATE TABLE ELECTED_LEADER_META_INFO";
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stmt = conn.createStatement();
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try (Statement stmt = conn.createStatement()) {
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stmt.execute(sql);
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conn.commit();
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}
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} catch (SQLException e) {
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throw new HeartBeatDAOException("Error occurred while truncating ELECTED_LEADER_META_INFO table.", e);
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} finally {
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HeartBeatBeaconDAOUtil.cleanupResources(stmt, null);
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String msg = "Error occurred while truncating ELECTED_LEADER_META_INFO table.";
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log.error(msg, e);
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throw new HeartBeatDAOException(msg, e);
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}
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}
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@Override
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public ElectedCandidate retrieveCandidate() throws HeartBeatDAOException {
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Statement stmt = null;
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ResultSet resultSet = null;
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ElectedCandidate candidate = null;
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try {
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Connection conn = HeartBeatBeaconDAOFactory.getConnection();
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String sql = "SELECT * from ELECTED_LEADER_META_INFO";
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stmt = conn.createStatement();
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resultSet = stmt.executeQuery(sql);
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try (Statement stmt = conn.createStatement()) {
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try (ResultSet resultSet = stmt.executeQuery(sql)) {
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while (resultSet.next()) {
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candidate = HeartBeatBeaconDAOUtil.populateCandidate(resultSet);
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}
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}
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}
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} catch (SQLException e) {
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throw new HeartBeatDAOException("Error occurred while retrieving meta information of elected candidate", e);
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} finally {
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HeartBeatBeaconDAOUtil.cleanupResources(stmt, resultSet);
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String msg = "Error occurred while retrieving meta information of elected candidate";
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log.error(msg, e);
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throw new HeartBeatDAOException(msg, e);
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}
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return candidate;
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}
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@Override
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public boolean acknowledgeTask(String uuid, List<String> taskList) throws HeartBeatDAOException {
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PreparedStatement stmt = null;
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public boolean acknowledgeTask(String uuid, List<String> taskList)
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throws HeartBeatDAOException {
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try {
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Connection conn = HeartBeatBeaconDAOFactory.getConnection();
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String sql;
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sql = "UPDATE ELECTED_LEADER_META_INFO SET ACKNOWLEDGED_TASK_LIST = ? WHERE UUID = ?";
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stmt = conn.prepareStatement(sql, new String[]{"UUID"});
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try (PreparedStatement stmt = conn.prepareStatement(sql, new String[]{"UUID"})) {
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stmt.setString(1, String.join(",", taskList));
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stmt.setString(2, uuid);
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return stmt.executeUpdate() > 0;
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}
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} catch (SQLException e) {
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throw new HeartBeatDAOException("Error occurred while updating task list of elected server : '" +
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uuid + "' and task list " + taskList, e);
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} finally {
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HeartBeatBeaconDAOUtil.cleanupResources(stmt, null);
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String msg = "Error occurred while updating task list of elected server : '" +
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uuid + "' and task list " + taskList;
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log.error(msg, e);
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throw new HeartBeatDAOException(msg, e);
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}
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}
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@Override
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public boolean recordHeatBeat(HeartBeatEvent event) throws HeartBeatDAOException {
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PreparedStatement stmt = null;
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try {
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Connection conn = HeartBeatBeaconDAOFactory.getConnection();
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String sql;
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sql = "UPDATE SERVER_HEART_BEAT_EVENTS SET LAST_UPDATED_TIMESTAMP = ? WHERE UUID = ?";
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stmt = conn.prepareStatement(sql, new String[]{"ID"});
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try (PreparedStatement stmt = conn.prepareStatement(sql, new String[]{"ID"})) {
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stmt.setTimestamp(1, event.getTime());
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stmt.setString(2, event.getServerUUID());
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return stmt.executeUpdate() > 0;
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}
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} catch (SQLException e) {
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throw new HeartBeatDAOException("Error occurred while updating heartbeat event against server with UUID : '" +
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event.getServerUUID() + "' and timestamp " + event.getTime(), e);
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} finally {
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HeartBeatBeaconDAOUtil.cleanupResources(stmt, null);
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String msg = "Error occurred while updating heartbeat event against server with UUID : '" +
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event.getServerUUID() + "' and timestamp " + event.getTime();
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log.error(msg, e);
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throw new HeartBeatDAOException(msg, e);
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}
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}
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@Override
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public boolean checkUUIDValidity(String uuid) throws HeartBeatDAOException {
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PreparedStatement stmt = null;
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ResultSet resultSet = null;
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boolean result = false;
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try {
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Connection conn = HeartBeatBeaconDAOFactory.getConnection();
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String sql = "SELECT ID FROM SERVER_HEART_BEAT_EVENTS WHERE UUID = ?";
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stmt = conn.prepareStatement(sql);
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try (PreparedStatement stmt = conn.prepareStatement(sql)) {
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stmt.setString(1, uuid);
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resultSet = stmt.executeQuery();
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try (ResultSet resultSet = stmt.executeQuery()) {
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if (resultSet.next()) {
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result = true;
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}
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}
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}
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} catch (SQLException e) {
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throw new HeartBeatDAOException("Error occurred checking existense of UUID" + uuid +
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" amongst heartbeat meta info ", e);
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} finally {
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HeartBeatBeaconDAOUtil.cleanupResources(stmt, resultSet);
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String msg = "Error occurred checking existense of UUID" + uuid +
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" amongst heartbeat meta info.";
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log.error(msg, e);
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throw new HeartBeatDAOException(msg, e);
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}
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return result;
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}
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@Override
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public String retrieveExistingServerCtx(ServerContext ctx) throws HeartBeatDAOException {
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PreparedStatement stmt = null;
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ResultSet resultSet = null;
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String uuid = null;
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try {
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Connection conn = HeartBeatBeaconDAOFactory.getConnection();
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String sql = "SELECT UUID FROM SERVER_HEART_BEAT_EVENTS WHERE HOST_NAME = ? AND SERVER_PORT = ?";
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stmt = conn.prepareStatement(sql, new String[]{"UUID"});
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try (PreparedStatement stmt = conn.prepareStatement(sql, new String[]{"UUID"})) {
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stmt.setString(1, ctx.getHostName());
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stmt.setInt(2, ctx.getCarbonServerPort());
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resultSet = stmt.executeQuery();
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try (ResultSet resultSet = stmt.executeQuery()) {
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if (resultSet.next()) {
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uuid = resultSet.getString("UUID");
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}
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}
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}
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} catch (SQLException e) {
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throw new HeartBeatDAOException("Error occurred while retrieving meta information for heart beat event from " +
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String msg = "Error occurred while retrieving meta information for heart beat event from " +
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"port '" + ctx.getCarbonServerPort() + "' " +
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"hostname : '" + ctx.getHostName() + "' ", e);
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} finally {
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HeartBeatBeaconDAOUtil.cleanupResources(stmt, resultSet);
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"hostname : '" + ctx.getHostName() + "'";
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log.error(msg, e);
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throw new HeartBeatDAOException(msg, e);
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}
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return uuid;
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}
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@ -225,8 +224,6 @@ public class GenericHeartBeatDAOImpl implements HeartBeatDAO {
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@Override
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public Map<String, ServerContext> getActiveServerDetails(int elapsedTimeInSeconds)
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throws HeartBeatDAOException {
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PreparedStatement stmt = null;
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ResultSet resultSet = null;
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Map<String, ServerContext> ctxList = new HashMap<>();
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try {
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Connection conn = HeartBeatBeaconDAOFactory.getConnection();
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@ -234,17 +231,19 @@ public class GenericHeartBeatDAOImpl implements HeartBeatDAO {
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"SERVER_HEART_BEAT_EVENTS, (SELECT @row_number:=-1) AS TEMP " +
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"WHERE LAST_UPDATED_TIMESTAMP > ? " +
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"ORDER BY UUID";
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stmt = conn.prepareStatement(sql);
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try (PreparedStatement stmt = conn.prepareStatement(sql)) {
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stmt.setTimestamp(1, new Timestamp(System.currentTimeMillis() - TimeUnit.SECONDS.toMillis(elapsedTimeInSeconds)));
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resultSet = stmt.executeQuery();
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try (ResultSet resultSet = stmt.executeQuery()) {
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while (resultSet.next()) {
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ctxList.put(resultSet.getString("UUID"), HeartBeatBeaconDAOUtil.populateContext(resultSet));
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}
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}
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}
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} catch (SQLException e) {
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throw new HeartBeatDAOException("Error occurred while retrieving acting server count with " +
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"heartbeat updates within " + elapsedTimeInSeconds + " seconds.", e);
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} finally {
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HeartBeatBeaconDAOUtil.cleanupResources(stmt, resultSet);
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String msg = "Error occurred while retrieving acting server count with " +
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"heartbeat updates within " + elapsedTimeInSeconds + " seconds.";
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log.error(msg, e);
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throw new HeartBeatDAOException(msg, e);
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}
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return ctxList;
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}
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Ace
4 years ago