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feat: 增加对于会话数据源连接数的限制 关闭某个用户的数据源接口 #3
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Merged
LordofAvernus
merged 11 commits into
actiontech:dev/4.3.4
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littleniannian:opt_connection
Nov 21, 2025
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5d48b3b
feat: add limit metric USER_DATASOURCE_SESSION_COUNT message
littleniannian e3f038d
feat: add session connection limit service
littleniannian cff6f01
feat: add enum USER_DATASOURCE_SESSION_COUNT
littleniannian 0c5e0b7
feat: add odc.session.sql-execute.user-datasource-max-count data init
littleniannian e487ace
feat: add api closeUserDatasourceSessions
littleniannian 0d88212
fix: close dataSource by datasource id or all
littleniannian 758dcf9
fix: dataSourceId is null
littleniannian b855284
feat: datasource connection limit
littleniannian d88c9a1
feat: add properties for datasource connection limit
littleniannian a14e9ce
fix: data source limit error
littleniannian 72b4545
fix: remove ConnectionCountManager class comment
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243 changes: 243 additions & 0 deletions
243
server/odc-core/src/main/java/com/oceanbase/odc/core/datasource/ConnectionCountManager.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,243 @@ | ||
| /* | ||
| * Copyright (c) 2023 OceanBase. | ||
| * | ||
| * 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. | ||
| */ | ||
| package com.oceanbase.odc.core.datasource; | ||
|
|
||
| import java.util.Map; | ||
| import java.util.concurrent.ConcurrentHashMap; | ||
| import java.util.concurrent.atomic.AtomicInteger; | ||
| import java.util.regex.Matcher; | ||
| import java.util.regex.Pattern; | ||
|
|
||
| import com.oceanbase.odc.core.shared.exception.OverLimitException; | ||
|
|
||
| import lombok.extern.slf4j.Slf4j; | ||
|
|
||
| /** | ||
| * Connection count manager for tracking database connections by url+username | ||
| */ | ||
| @Slf4j | ||
| public class ConnectionCountManager { | ||
|
|
||
| private static volatile ConnectionCountManager instance; | ||
| private final Map<String, AtomicInteger> connectionCountMap = new ConcurrentHashMap<>(); | ||
| private volatile long maxConnectionCount = -1; | ||
|
|
||
| private ConnectionCountManager() {} | ||
|
|
||
| public static ConnectionCountManager getInstance() { | ||
| if (instance == null) { | ||
| synchronized (ConnectionCountManager.class) { | ||
| if (instance == null) { | ||
| instance = new ConnectionCountManager(); | ||
| } | ||
| } | ||
| } | ||
| return instance; | ||
| } | ||
|
|
||
| /** | ||
| * Initialize the max connection count limit | ||
| * | ||
| * @param maxConnectionCount max connection count, -1 means no limit | ||
| */ | ||
| public void setMaxConnectionCount(long maxConnectionCount) { | ||
| this.maxConnectionCount = maxConnectionCount; | ||
| log.info("Set max connection count to {}", maxConnectionCount); | ||
| } | ||
|
|
||
| /** | ||
| * Get the max connection count limit | ||
| * | ||
| * @return max connection count, -1 means no limit | ||
| */ | ||
| public long getMaxConnectionCount() { | ||
| return maxConnectionCount; | ||
| } | ||
|
|
||
| /** | ||
| * Generate key from url and username | ||
| * Extracts host:port from JDBC URL and combines with username | ||
| * | ||
| * @param url database url (JDBC URL format) | ||
| * @param username database username | ||
| * @return key string in format "host:port:username" | ||
| */ | ||
| public static String generateKey(String url, String username) { | ||
| if (url == null) { | ||
| url = ""; | ||
| } | ||
| if (username == null) { | ||
| username = ""; | ||
| } | ||
| String hostPort = extractHostAndPort(url); | ||
| return hostPort + ":" + username; | ||
| } | ||
|
|
||
| /** | ||
| * Extract host:port from JDBC URL | ||
| * Supports formats: | ||
| * - jdbc:mysql://host:port/database?params | ||
| * - jdbc:oceanbase://host:port/database?params | ||
| * - jdbc:postgresql://host:port/database?params | ||
| * - jdbc:oracle:thin:@host:port:database | ||
| * - jdbc:oracle:thin:@//host:port/database | ||
| * | ||
| * @param jdbcUrl JDBC URL | ||
| * @return host:port string, or original url if parsing fails | ||
| */ | ||
| private static String extractHostAndPort(String jdbcUrl) { | ||
| if (jdbcUrl == null || jdbcUrl.isEmpty()) { | ||
| return ""; | ||
| } | ||
|
|
||
| // Pattern for MySQL/OceanBase/PostgreSQL: jdbc:type://host:port/... | ||
| Pattern mysqlPattern = Pattern.compile("jdbc:(mysql|oceanbase|postgresql)://([^/:]+)(?::([0-9]+))?"); | ||
| Matcher mysqlMatcher = mysqlPattern.matcher(jdbcUrl); | ||
| if (mysqlMatcher.find()) { | ||
| String host = mysqlMatcher.group(2); | ||
| String port = mysqlMatcher.group(3); | ||
| if (port != null && !port.isEmpty()) { | ||
| return host + ":" + port; | ||
| } else { | ||
| // Use default port based on database type | ||
| String dbType = mysqlMatcher.group(1); | ||
| int defaultPort = getDefaultPort(dbType); | ||
| return host + ":" + defaultPort; | ||
| } | ||
| } | ||
|
|
||
| // Pattern for Oracle SID format: jdbc:oracle:thin:@host:port:database | ||
| Pattern oracleSidPattern = Pattern.compile("jdbc:oracle:thin:@([^:/]+):([0-9]+)"); | ||
| Matcher oracleSidMatcher = oracleSidPattern.matcher(jdbcUrl); | ||
| if (oracleSidMatcher.find()) { | ||
| return oracleSidMatcher.group(1) + ":" + oracleSidMatcher.group(2); | ||
| } | ||
|
|
||
| // Pattern for Oracle Service Name format: jdbc:oracle:thin:@//host:port/database | ||
| Pattern oracleServicePattern = Pattern.compile("jdbc:oracle:thin:@//([^:/]+):([0-9]+)"); | ||
| Matcher oracleServiceMatcher = oracleServicePattern.matcher(jdbcUrl); | ||
| if (oracleServiceMatcher.find()) { | ||
| return oracleServiceMatcher.group(1) + ":" + oracleServiceMatcher.group(2); | ||
| } | ||
|
|
||
| // If no pattern matches, log warning and return original URL | ||
| log.warn("Failed to extract host:port from JDBC URL: {}, using original URL as key", jdbcUrl); | ||
| return jdbcUrl; | ||
| } | ||
|
|
||
| /** | ||
| * Get default port for database type | ||
| * | ||
| * @param dbType database type (mysql, oceanbase, postgresql, etc.) | ||
| * @return default port number | ||
| */ | ||
| private static int getDefaultPort(String dbType) { | ||
| if (dbType == null) { | ||
| return 3306; // Default to MySQL port | ||
| } | ||
| switch (dbType.toLowerCase()) { | ||
| case "mysql": | ||
| return 3306; | ||
| case "oceanbase": | ||
| return 2883; | ||
| case "postgresql": | ||
| return 5432; | ||
| default: | ||
| return 3306; // Default to MySQL port | ||
| } | ||
| } | ||
|
|
||
| /** | ||
| * Increment connection count for the given key | ||
| * | ||
| * @param key connection key (url+username) | ||
| * @return current count after increment | ||
| * @throws OverLimitException if connection count exceeds limit | ||
| */ | ||
| public int incrementConnectionCount(String key) { | ||
| if (maxConnectionCount > 0) { | ||
| AtomicInteger count = connectionCountMap.computeIfAbsent(key, k -> new AtomicInteger(0)); | ||
| int currentCount = count.incrementAndGet(); | ||
| log.debug("Increment connection count, key={}, currentCount={}, maxCount={}", key, currentCount, | ||
| maxConnectionCount); | ||
| if (currentCount > maxConnectionCount) { | ||
| count.decrementAndGet(); | ||
| String message = String.format("数据库连接数超限, 当前值=%d, 最大值=%d", | ||
| currentCount, maxConnectionCount); | ||
| throw new IllegalStateException(String.format(message, maxConnectionCount)); | ||
| } | ||
| return currentCount; | ||
| } else { | ||
| // No limit, just increment | ||
| AtomicInteger count = connectionCountMap.computeIfAbsent(key, k -> new AtomicInteger(0)); | ||
| int currentCount = count.incrementAndGet(); | ||
| log.debug("Increment connection count (no limit), key={}, currentCount={}", key, currentCount); | ||
| return currentCount; | ||
| } | ||
| } | ||
|
|
||
| /** | ||
| * Decrement connection count for the given key | ||
| * | ||
| * @param key connection key (url+username) | ||
| * @return current count after decrement | ||
| */ | ||
| public int decrementConnectionCount(String key) { | ||
| AtomicInteger count = connectionCountMap.get(key); | ||
| if (count == null) { | ||
| log.warn("Attempt to decrement connection count for non-existent key: {}", key); | ||
| return 0; | ||
| } | ||
| int currentCount = count.decrementAndGet(); | ||
| log.debug("Decrement connection count, key={}, currentCount={}", key, currentCount); | ||
| if (currentCount <= 0) { | ||
| connectionCountMap.remove(key); | ||
| log.debug("Removed connection count entry for key: {}", key); | ||
| } | ||
| return currentCount; | ||
| } | ||
|
|
||
| /** | ||
| * Get current connection count for the given key | ||
| * | ||
| * @param key connection key (url+username) | ||
| * @return current count | ||
| */ | ||
| public int getConnectionCount(String key) { | ||
| AtomicInteger count = connectionCountMap.get(key); | ||
| return count == null ? 0 : count.get(); | ||
| } | ||
|
|
||
| /** | ||
| * Clear all connection counts (mainly for testing) | ||
| */ | ||
| public void clear() { | ||
| connectionCountMap.clear(); | ||
| log.info("Cleared all connection counts"); | ||
| } | ||
|
|
||
| /** | ||
| * Get all connection counts (mainly for monitoring) | ||
| * | ||
| * @return snapshot of connection count map | ||
| */ | ||
| public Map<String, Integer> getAllConnectionCounts() { | ||
| Map<String, Integer> snapshot = new ConcurrentHashMap<>(); | ||
| connectionCountMap.forEach((key, count) -> snapshot.put(key, count.get())); | ||
| return snapshot; | ||
| } | ||
|
|
||
| } |
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这里的url指的是啥，username是数据库连接用户名称吗
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url是数据库连接串，username是数据库连接用户名