Github user wujinhu commented on a diff in the pull request:
https://github.com/apache/incubator-eagle/pull/705#discussion_r90581922
--- Diff:
eagle-core/eagle-alert-parent/eagle-alert/alert-metadata-parent/alert-metadata/src/main/java/org/apache/eagle/alert/metadata/impl/JdbcMetadataHandler.java
---
@@ -0,0 +1,533 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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.
+ *
+ */
+
+package org.apache.eagle.alert.metadata.impl;
+
+import org.apache.commons.collections.map.HashedMap;
+import org.apache.commons.dbcp.BasicDataSource;
+import org.apache.eagle.alert.coordination.model.Kafka2TupleMetadata;
+import org.apache.eagle.alert.coordination.model.ScheduleState;
+import org.apache.eagle.alert.coordination.model.internal.PolicyAssignment;
+import org.apache.eagle.alert.coordination.model.internal.Topology;
+import org.apache.eagle.alert.engine.coordinator.*;
+import org.apache.eagle.alert.engine.model.AlertPublishEvent;
+import org.apache.eagle.alert.metadata.MetadataUtils;
+import org.apache.eagle.alert.metadata.resource.OpResult;
+
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.DeserializationFeature;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.typesafe.config.Config;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import javax.sql.DataSource;
+import java.io.IOException;
+import java.sql.*;
+import java.util.*;
+import java.util.function.Function;
+
+public class JdbcMetadataHandler {
+
+ private static final Logger LOG =
LoggerFactory.getLogger(JdbcMetadataHandler.class);
+ // general model
+ private static final String INSERT_STATEMENT = "INSERT INTO
%s(content, id) VALUES (?, ?)";
+ private static final String DELETE_STATEMENT = "DELETE FROM %s WHERE
id=?";
+ private static final String UPDATE_STATEMENT = "UPDATE %s set
content=? WHERE id=?";
+ private static final String QUERY_ALL_STATEMENT = "SELECT content FROM
%s";
+ private static final String QUERY_CONDITION_STATEMENT = "SELECT
content FROM %s WHERE id=?";
+ private static final String QUERY_ORDERBY_STATEMENT = "SELECT content
FROM %s ORDER BY id %s";
+
+ // customized model
+ private static final String CLEAR_SCHEDULESTATES_STATEMENT = "DELETE
FROM schedule_state WHERE id NOT IN (SELECT id from (SELECT id FROM
schedule_state ORDER BY id DESC limit ?) as states)";
+ private static final String INSERT_ALERT_STATEMENT = "INSERT INTO
alert_event(alertId, siteId, appIds, policyId, alertTimestamp, policyValue,
alertData) VALUES (?, ?, ?, ?, ?, ?, ?)";
+ private static final String QUERY_ALERT_STATEMENT = "SELECT * FROM
alert_event order by alertTimestamp DESC limit ?";
+ private static final String QUERY_ALERT_BY_ID_STATEMENT = "SELECT *
FROM alert_event WHERE alertId=? order by alertTimestamp DESC limit ?";
+ private static final String QUERY_ALERT_BY_POLICY_STATEMENT = "SELECT
* FROM alert_event WHERE policyId=? order by alertTimestamp DESC limit ?";
+ private static final String INSERT_POLICYPUBLISHMENT_STATEMENT =
"INSERT INTO policy_publishment(policyId, publishmentName) VALUES (?, ?)";
+ private static final String DELETE_PUBLISHMENT_STATEMENT = "DELETE
FROM policy_publishment WHERE policyId=?";
+ private static final String QUERY_PUBLISHMENT_BY_POLICY_STATEMENT =
"SELECT content FROM publishment a INNER JOIN policy_publishment b ON
a.id=b.publishmentName and b.policyId=?";
+ private static final String QUERY_PUBLISHMENT_STATEMENT = "SELECT
a.content, b.policyId FROM publishment a LEFT JOIN policy_publishment b ON
a.id=b.publishmentName";
+
+ public enum SortType { DESC, ASC }
+
+ private static Map<String, String> tblNameMap = new HashMap<>();
+
+ private static final ObjectMapper mapper = new ObjectMapper();
+ private DataSource dataSource;
+
+ static {
+
mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
+ registerTableName(StreamingCluster.class.getSimpleName(),
"stream_cluster");
+ registerTableName(StreamDefinition.class.getSimpleName(),
"stream_definition");
+ registerTableName(Kafka2TupleMetadata.class.getSimpleName(),
"kafka_tuple_metadata");
+ registerTableName(PolicyDefinition.class.getSimpleName(),
"policy_definition");
+ registerTableName(Publishment.class.getSimpleName(),
"publishment");
+ registerTableName(PublishmentType.class.getSimpleName(),
"publishment_type");
+ registerTableName(ScheduleState.class.getSimpleName(),
"schedule_state");
+ registerTableName(PolicyAssignment.class.getSimpleName(),
"policy_assignment");
+ registerTableName(Topology.class.getSimpleName(), "topology");
+ registerTableName(AlertPublishEvent.class.getSimpleName(),
"alert_event");
+ }
+
+ private static void registerTableName(String clzName, String tblName) {
+ tblNameMap.put(clzName, tblName);
+ }
+
+ public JdbcMetadataHandler(Config config) {
+ try {
+ //JdbcSchemaManager.getInstance().init(config);
+ BasicDataSource bDatasource = new BasicDataSource();
+
bDatasource.setDriverClassName(config.getString(MetadataUtils.JDBC_DRIVER_PATH));
+ if (config.hasPath(MetadataUtils.JDBC_USERNAME_PATH)) {
+
bDatasource.setUsername(config.getString(MetadataUtils.JDBC_USERNAME_PATH));
+
bDatasource.setPassword(config.getString(MetadataUtils.JDBC_PASSWORD_PATH));
+ }
+
bDatasource.setUrl(config.getString(MetadataUtils.JDBC_CONNECTION_PATH));
+ if
(config.hasPath(MetadataUtils.JDBC_CONNECTION_PROPERTIES_PATH)) {
+
bDatasource.setConnectionProperties(config.getString(MetadataUtils.JDBC_CONNECTION_PROPERTIES_PATH));
+ }
+ this.dataSource = bDatasource;
+ } catch (Exception e) {
+ LOG.error(e.getMessage(), e);
+ }
+ }
+
+ private String getTableName(String clzName) {
+ String tbl = tblNameMap.get(clzName);
+ if (tbl != null) {
+ return tbl;
+ } else {
+ return clzName;
+ }
+ }
+
+ private OpResult executeUpdate(Connection connection, String query,
String key, String value) throws SQLException {
+ OpResult result = new OpResult();
+ PreparedStatement statement = null;
+ try {
+ statement = connection.prepareStatement(query);
+ Clob clob = connection.createClob();
+ clob.setString(1, value);
+ statement.setClob(1, clob);
+ statement.setString(2, key);
+ int status = statement.executeUpdate();
+ LOG.info("update {} with query={}", status, query);
+ } finally {
+ if (statement != null) {
+ statement.close();
+ }
+ }
+ return result;
+ }
+
+ private OpResult executeUpdate(Connection connection,
PreparedStatement statement) {
+ OpResult result = new OpResult();
+ try {
+ int status = statement.executeUpdate();
+ result.code = OpResult.SUCCESS;
+ result.message = String.format("updated %d records
successfully", status);
+ LOG.info(result.message);
+ } catch (Exception e) {
+ LOG.error(e.getMessage(), e);
+ result.code = OpResult.FAILURE;
+ result.message = e.getMessage();
+ } finally {
+ if (statement != null) {
+ try {
+ statement.close();
+ } catch (SQLException e) {
+ LOG.error("Failed to close statement: {}",
e.getMessage(), e.getCause());
+ }
+ }
+ if (connection != null) {
+ try {
+ connection.close();
+ } catch (SQLException e) {
+ LOG.error("Failed to close statement: {}",
e.getMessage(), e.getCause());
+ }
+ }
+ }
+ return result;
+ }
+
+ public <T> OpResult addOrReplace(String clzName, T t) {
+ String tb = getTableName(clzName);
+ OpResult result = new OpResult();
+ Savepoint savepoint = null;
+ String key = null;
+ String value = null;
+ Connection connection = null;
+ try {
+ connection = dataSource.getConnection();
+ key = MetadataUtils.getKey(t);
+ value = mapper.writeValueAsString(t);
+ connection.setAutoCommit(false);
+ savepoint = connection.setSavepoint("insertEntity");
+ result = executeUpdate(connection,
String.format(INSERT_STATEMENT, tb), key, value);
+ connection.commit();
+ } catch (SQLException e) {
+ LOG.warn("fail to insert entity due to {}, and try to updated
instead", e.getMessage());
+ if (connection != null) {
+ LOG.info("Detected duplicated entity");
+ try {
+ connection.rollback(savepoint);
+ executeUpdate(connection,
String.format(UPDATE_STATEMENT, tb), key, value);
+ connection.commit();
+ connection.setAutoCommit(true);
+ } catch (SQLException e1) {
+ LOG.warn("Rollback failed", e1);
+ }
+ }
+ } catch (JsonProcessingException e) {
+ LOG.error("Got JsonProcessingException: {}", e.getMessage(),
e.getCause());
+ result.code = OpResult.FAILURE;
+ result.message = e.getMessage();
+ } finally {
+ if (connection != null) {
+ try {
+ connection.close();
+ } catch (SQLException e) {
+ LOG.error("Failed to close statement: {}",
e.getMessage(), e.getCause());
+ }
+ }
+ }
+ return result;
+ }
+
+
+ public <T> List<T> list(Class<T> clz) {
+ return listOrderBy(clz, null);
+ }
+
+ public <T> List<T> listOrderBy(Class<T> clz, String sortType) {
+ List<T> result = new LinkedList<T>();
+ try {
+ String tb = getTableName(clz.getSimpleName());
+ String query = String.format(QUERY_ALL_STATEMENT, tb);
+ if (sortType != null) {
+ query = String.format(QUERY_ORDERBY_STATEMENT, tb,
sortType);
+ }
+ Connection connection = dataSource.getConnection();
+ PreparedStatement statement =
connection.prepareStatement(query);
+ return executeList(connection, statement, rs -> {
+ try {
+ String content = rs.getString(1);
+ return mapper.readValue(content, clz);
+ } catch (Exception e) {
+ throw new IllegalStateException(e);
+ }
+ });
+ } catch (SQLException ex) {
+ LOG.error(ex.getMessage(), ex);
+ return result;
+ }
+ }
+
+ private <T> List<T> executeList(Connection connection,
PreparedStatement statement, Function<ResultSet, T> selectFun) {
+ List<T> result = new LinkedList<>();
+ ResultSet rs = null;
+ try {
+ rs = statement.executeQuery();
+ while (rs.next()) {
+ result.add(selectFun.apply(rs));
+ }
+ } catch (SQLException e) {
+ LOG.error(e.getMessage(), e);
+ } finally {
+ if (rs != null) {
+ try {
+ rs.close();
+ } catch (SQLException e) {
+ e.printStackTrace();
+ }
+ }
+ if (statement != null) {
+ try {
+ statement.close();
+ } catch (SQLException e) {
+ e.printStackTrace();
+ }
+ }
+ if (connection != null) {
+ try {
+ connection.close();
+ } catch (SQLException e) {
+ LOG.error("Failed to close statement: {}",
e.getMessage(), e.getCause());
+ }
+ }
+ }
+ return result;
+ }
+
+ public <T> T queryById(Class<T> clz, String id) {
+ List<T> result = new LinkedList<T>();
+ try {
+ String tb = getTableName(clz.getSimpleName());
+ Connection connection = dataSource.getConnection();
+ PreparedStatement statement =
connection.prepareStatement(String.format(QUERY_CONDITION_STATEMENT, tb));
+ statement.setString(1, id);
+ result = executeList(connection, statement, rs -> {
+ try {
+ String content = rs.getString(1);
+ return mapper.readValue(content, clz);
+ } catch (Exception e) {
+ throw new IllegalStateException(e);
+ }
+ });
+ } catch (SQLException ex) {
+ LOG.error(ex.getMessage(), ex);
+ }
+ if (result.isEmpty()) {
+ return null;
+ } else {
+ return result.get(0);
+ }
+ }
+
+ public AlertPublishEvent getAlertEventById(String alertId, int size) {
+ List<AlertPublishEvent> alerts =
listAlertEvents(QUERY_ALERT_BY_ID_STATEMENT, alertId, size);
+ if (alerts.isEmpty()) {
+ return null;
+ } else {
+ return alerts.get(0);
+ }
+ }
+
+ public List<AlertPublishEvent> getAlertEventByPolicyId(String
policyId, int size) {
+ return listAlertEvents(QUERY_ALERT_BY_POLICY_STATEMENT, policyId,
size);
+ }
+
+ public List<AlertPublishEvent> listAlertEvents(String query, String
filter, int size) {
+ List<AlertPublishEvent> alerts = new LinkedList<>();
+ try {
+ Connection connection = dataSource.getConnection();
+ PreparedStatement statement = null;
+ if (query == null) {
+ query = QUERY_ALERT_STATEMENT;
+ statement = connection.prepareStatement(query);
+ statement.setInt(1, size);
+ } else {
+ statement = connection.prepareStatement(query);
+ statement.setString(1, filter);
+ statement.setInt(2, size);
+ }
+ alerts = executeList(connection, statement, rs -> {
+ try {
+ AlertPublishEvent event = new AlertPublishEvent();
+ event.setAlertId(rs.getString(1));
+ event.setSiteId(rs.getString(2));
+ event.setAppIds(mapper.readValue(rs.getString(3),
List.class));
+ event.setPolicyId(rs.getString(4));
+ event.setAlertTimestamp(rs.getLong(5));
+ event.setPolicyValue(rs.getString(6));
+ event.setAlertData(mapper.readValue(rs.getString(7),
Map.class));
+ return event;
+ } catch (Exception e) {
+ throw new IllegalStateException(e);
+ }
+ });
+ } catch (SQLException ex) {
+ LOG.error(ex.getMessage(), ex);
+ }
+ return alerts;
+ }
+
+ public List<Publishment> listPublishments() {
+ List<Publishment> result = new LinkedList<>();
+ Connection connection = null;
+ PreparedStatement statement = null;
+ ResultSet rs = null;
+ try {
+ connection = dataSource.getConnection();
+ statement =
connection.prepareStatement(QUERY_PUBLISHMENT_STATEMENT);
+ Map<String, List<String>> publishPolicyMap = new HashedMap();
+ rs = statement.executeQuery();
+ while (rs.next()) {
+ String publishment = rs.getString(1);
+ String policyId = rs.getString(2);
+ List<String> policyIds = publishPolicyMap.get(publishment);
+ if (policyIds == null) {
+ policyIds = new ArrayList<>();
+ publishPolicyMap.put(publishment, policyIds);
+ }
+ if (policyId != null) {
+ policyIds.add(policyId);
+ }
+ }
+ for (Map.Entry<String, List<String>> entry :
publishPolicyMap.entrySet()) {
+ Publishment publishment = mapper.readValue(entry.getKey(),
Publishment.class);
+ publishment.setPolicyIds(entry.getValue());
+ result.add(publishment);
+ }
+ return result;
+ } catch (Exception ex) {
+ LOG.error(ex.getMessage(), ex);
+ return result;
+ } finally {
+ if (rs != null) {
+ try {
+ rs.close();
+ } catch (SQLException e) {
+ e.printStackTrace();
+ }
+ }
+ if (statement != null) {
+ try {
+ statement.close();
+ } catch (SQLException e) {
+ e.printStackTrace();
--- End diff --
remove this line
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