mirror of
https://github.com/alibaba/canal.git
synced 2026-11-04 00:30:15 +08:00
merge from github and rebase
This commit is contained in:
jianghang.loujh
@@ -13,9 +13,7 @@ import java.util.concurrent.atomic.AtomicBoolean;
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import java.util.concurrent.locks.ReadWriteLock;
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import java.util.concurrent.locks.ReentrantReadWriteLock;
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import java.util.regex.Pattern;
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import com.alibaba.otter.canal.parse.driver.mysql.packets.server.FieldPacket;
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import com.alibaba.polardbx.druid.sql.repository.Schema;
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import org.apache.commons.beanutils.BeanUtils;
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import org.apache.commons.lang.ObjectUtils;
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import org.apache.commons.lang.StringUtils;
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import org.slf4j.Logger;
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@@ -40,6 +38,7 @@ import com.alibaba.otter.canal.parse.inbound.mysql.tsdb.dao.MetaHistoryDO;
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import com.alibaba.otter.canal.parse.inbound.mysql.tsdb.dao.MetaSnapshotDAO;
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import com.alibaba.otter.canal.parse.inbound.mysql.tsdb.dao.MetaSnapshotDO;
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import com.alibaba.otter.canal.protocol.position.EntryPosition;
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import com.alibaba.polardbx.druid.sql.repository.Schema;
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/**
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* 基于db远程管理 see internal class: CanalTableMeta , ConsoleTableMetaTSDB
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@@ -52,7 +51,8 @@ public class DatabaseTableMeta implements TableMetaTSDB {
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public static final EntryPosition INIT_POSITION = new EntryPosition("0", 0L, -2L, -1L);
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private static Logger logger = LoggerFactory.getLogger(DatabaseTableMeta.class);
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private static Pattern pattern = Pattern.compile("Duplicate entry '.*' for key '*'");
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private static Pattern h2Pattern = Pattern.compile("Unique index or primary key violation");
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private static Pattern h2Pattern = Pattern
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.compile("Unique index or primary key violation");
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private static ScheduledExecutorService scheduler = Executors.newSingleThreadScheduledExecutor(r -> {
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Thread thread = new Thread(r,
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"[scheduler-table-meta-snapshot]");
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@@ -63,7 +63,7 @@ public class DatabaseTableMeta implements TableMetaTSDB {
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private AtomicBoolean initialized = new AtomicBoolean(false);
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private String destination;
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private MemoryTableMeta memoryTableMeta;
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private volatile MysqlConnection connection; // 查询meta信息的链接
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private volatile MysqlConnection connection; // 查询meta信息的链接
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private CanalEventFilter filter;
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private CanalEventFilter blackFilter;
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private Map<String, List<String>> fieldFilterMap = new HashMap<>();
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@@ -80,6 +80,143 @@ public class DatabaseTableMeta implements TableMetaTSDB {
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}
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public static boolean compareTableMeta(TableMeta source, TableMeta target) {
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if (!StringUtils.equalsIgnoreCase(source.getSchema(), target.getSchema())) {
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return false;
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}
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if (!StringUtils.equalsIgnoreCase(source.getTable(), target.getTable())) {
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return false;
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}
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List<FieldMeta> sourceFields = source.getFields();
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List<FieldMeta> targetFields = target.getFields();
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if (sourceFields.size() != targetFields.size()) {
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return false;
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}
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/**
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* MySQL DDL的一些默认行为:
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*
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* <pre>
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* 1. Timestamp类型的列在第一次添加时，未指定默认值会默认为CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
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* 2. Timestamp类型的列在第二次时，必须指定默认值
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* 3. BLOB和TEXT类型不存在NULL、NOT NULL属性
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* 4. 部分数据类型是synonyms，实际show create table时会转成对应类型
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* 5. 非BLOB和TEXT类型在默认未指定NULL、NOT NULL时，默认default null
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* 6. 在列变更时，不仅变更列名数据类型，同时各个约束中列名也会变更，同时如果约束中包含key length，则变更后的数据类型不应违背key length的约束（有长度的应大于key length；BLOB、TEXT应有key length；可以在存在key length情况下变更为无key length的数据类型，约束中key length忽略；等等）
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* 7. 字符集每列（char类、eumn、set）默认保存，指定使用指定的，未指定使用表默认的，不受修改表默认字符集而改变，同表默认时，字符集显示省略
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* 8. 新建表默认innodb引擎，latin1字符集
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* 9. BLOB、TEXT会根据给定长度自动转换为对应的TINY、MEDIUM，LONG类型，长度和字符集也有关
|
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* 10. unique约束在没有指定索引名是非幂等的，会自动以约束索引第一个列名称命名，同时以_2,_3这种形式添加后缀
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* </pre>
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*/
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for (int i = 0; i < sourceFields.size(); i++) {
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FieldMeta sourceField = sourceFields.get(i);
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FieldMeta targetField = targetFields.get(i);
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if (!StringUtils.equalsIgnoreCase(sourceField.getColumnName(), targetField.getColumnName())) {
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return false;
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}
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// if (!StringUtils.equalsIgnoreCase(sourceField.getColumnType(),
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// targetField.getColumnType())) {
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// return false;
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// }
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// https://github.com/alibaba/canal/issues/1100
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// 支持一下 int vs int(10)
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if ((sourceField.isUnsigned() && !targetField.isUnsigned())
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|| (!sourceField.isUnsigned() && targetField.isUnsigned())) {
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return false;
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}
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String sourceColumnType = StringUtils.removeEndIgnoreCase(sourceField.getColumnType(), "zerofill").trim();
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String targetColumnType = StringUtils.removeEndIgnoreCase(targetField.getColumnType(), "zerofill").trim();
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String sign = sourceField.isUnsigned() ? "unsigned" : "signed";
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sourceColumnType = StringUtils.removeEndIgnoreCase(sourceColumnType, sign).trim();
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targetColumnType = StringUtils.removeEndIgnoreCase(targetColumnType, sign).trim();
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boolean columnTypeCompare = false;
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columnTypeCompare |= StringUtils.containsIgnoreCase(sourceColumnType, targetColumnType);
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columnTypeCompare |= StringUtils.containsIgnoreCase(targetColumnType, sourceColumnType);
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if (!columnTypeCompare) {
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// 去掉精度参数再对比一次
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sourceColumnType = synonymsType(StringUtils.substringBefore(sourceColumnType, "(")).trim();
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targetColumnType = synonymsType(StringUtils.substringBefore(targetColumnType, "(")).trim();
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columnTypeCompare |= StringUtils.containsIgnoreCase(sourceColumnType, targetColumnType);
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columnTypeCompare |= StringUtils.containsIgnoreCase(targetColumnType, sourceColumnType);
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if (!columnTypeCompare) {
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return false;
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}
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}
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// if (!StringUtils.equalsIgnoreCase(sourceField.getDefaultValue(),
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// targetField.getDefaultValue())) {
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// return false;
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// }
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// BLOB, TEXT, GEOMETRY or JSON默认都是nullable，可以忽略比较，但比较了也是对齐
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if (StringUtils.containsIgnoreCase(sourceColumnType, "timestamp")
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|| StringUtils.containsIgnoreCase(targetColumnType, "timestamp")) {
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// timestamp可能会加default current_timestamp默认值,忽略对比nullable
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} else {
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if (sourceField.isNullable() != targetField.isNullable()) {
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return false;
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}
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}
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// mysql会有一种处理,针对show create只有uk没有pk时，会在desc默认将uk当做pk
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boolean isSourcePkOrUk = sourceField.isKey() || sourceField.isUnique();
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boolean isTargetPkOrUk = targetField.isKey() || targetField.isUnique();
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if (isSourcePkOrUk != isTargetPkOrUk) {
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return false;
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}
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}
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return true;
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}
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/**
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* <pre>
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* synonyms处理
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* 1. BOOL/BOOLEAN => TINYINT
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* 2. DEC/NUMERIC/FIXED => DECIMAL
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* 3. INTEGER => INT
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* </pre>
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*
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* @param originType
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* @return
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*/
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private static String synonymsType(String originType) {
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if (StringUtils.equalsIgnoreCase(originType, "bool") || StringUtils.equalsIgnoreCase(originType, "boolean")) {
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return "tinyint";
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} else
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if (StringUtils.equalsIgnoreCase(originType, "dec") || StringUtils.equalsIgnoreCase(originType, "numeric")
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|| StringUtils.equalsIgnoreCase(originType, "fixed")) {
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return "decimal";
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} else if (StringUtils.equalsIgnoreCase(originType, "integer")) {
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return "int";
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} else if (StringUtils.equalsIgnoreCase(originType, "real")
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|| StringUtils.equalsIgnoreCase(originType, "double precision")) {
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return "double";
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}
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// BLOB、TEXT会根据给定长度自动转换为对应的TINY、MEDIUM，LONG类型，长度和字符集也有关，统一按照blob对比
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if (StringUtils.equalsIgnoreCase(originType, "tinyblob")
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|| StringUtils.equalsIgnoreCase(originType, "mediumblob")
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|| StringUtils.equalsIgnoreCase(originType, "longblob")) {
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return "blob";
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} else if (StringUtils.equalsIgnoreCase(originType, "tinytext")
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|| StringUtils.equalsIgnoreCase(originType, "mediumtext")
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|| StringUtils.equalsIgnoreCase(originType, "longtext")) {
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return "text";
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}
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return originType;
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}
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@Override
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public boolean init(final String destination) {
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if (initialized.compareAndSet(false, true)) {
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@@ -121,8 +258,9 @@ public class DatabaseTableMeta implements TableMetaTSDB {
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try {
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connection.disconnect();
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} catch (IOException e) {
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logger.error("ERROR # disconnect meta connection for address:{}", connection.getConnector()
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.getAddress(), e);
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logger.error("ERROR # disconnect meta connection for address:{}",
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connection.getConnector().getAddress(),
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e);
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}
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}
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@@ -234,7 +372,7 @@ public class DatabaseTableMeta implements TableMetaTSDB {
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StringBuilder sql = new StringBuilder();
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for (String table : tables) {
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sql.append("show create table `" + schema + "`.`" + StringUtils.replace(table,"`","``") + "`;");
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sql.append("show create table `" + schema + "`.`" + StringUtils.replace(table, "`", "``") + "`;");
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}
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List<ResultSetPacket> packets = connection.queryMulti(sql.toString());
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@@ -370,7 +508,7 @@ public class DatabaseTableMeta implements TableMetaTSDB {
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snapshotDO.setBinlogOffest(position.getPosition());
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snapshotDO.setBinlogMasterId(String.valueOf(position.getServerId()));
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snapshotDO.setBinlogTimestamp(position.getTimestamp());
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snapshotDO.setData(JSON.toJSONString(schemaDdls,JSONWriter.Feature.LargeObject));
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snapshotDO.setData(JSON.toJSONString(schemaDdls, JSONWriter.Feature.LargeObject));
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try {
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metaSnapshotDAO.insert(snapshotDO);
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} catch (Throwable e) {
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@@ -466,9 +604,8 @@ public class DatabaseTableMeta implements TableMetaTSDB {
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private boolean applyHistoryOnMemory(EntryPosition position, EntryPosition rollbackPosition) {
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try {
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List<MetaHistoryDO> metaHistoryDOList = metaHistoryDAO.findByTimestamp(destination,
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position.getTimestamp(),
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rollbackPosition.getTimestamp());
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List<MetaHistoryDO> metaHistoryDOList = metaHistoryDAO
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.findByTimestamp(destination, position.getTimestamp(), rollbackPosition.getTimestamp());
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if (metaHistoryDOList == null) {
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return true;
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}
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@@ -490,8 +627,8 @@ public class DatabaseTableMeta implements TableMetaTSDB {
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continue;
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} else if (rollbackPosition.getServerId().equals(snapshotPosition.getServerId())
|
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&& snapshotPosition.compareTo(rollbackPosition) > 0) {
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continue;
|
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}
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continue;
|
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}
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// 记录到内存
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if (!memoryTableMeta.apply(snapshotPosition, useSchema, sqlData, null)) {
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@@ -515,156 +652,18 @@ public class DatabaseTableMeta implements TableMetaTSDB {
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private String getFullName(String schema, String table) {
|
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StringBuilder builder = new StringBuilder();
|
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return builder.append(structureSchema(schema)).append('.').append('`').append(StringUtils.replace(table,"`","``")).append('`').toString();
|
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}
|
||||
|
||||
public static boolean compareTableMeta(TableMeta source, TableMeta target) {
|
||||
if (!StringUtils.equalsIgnoreCase(source.getSchema(), target.getSchema())) {
|
||||
return false;
|
||||
}
|
||||
|
||||
if (!StringUtils.equalsIgnoreCase(source.getTable(), target.getTable())) {
|
||||
return false;
|
||||
}
|
||||
|
||||
List<FieldMeta> sourceFields = source.getFields();
|
||||
List<FieldMeta> targetFields = target.getFields();
|
||||
if (sourceFields.size() != targetFields.size()) {
|
||||
return false;
|
||||
}
|
||||
|
||||
/**
|
||||
* MySQL DDL的一些默认行为:
|
||||
*
|
||||
* <pre>
|
||||
* 1. Timestamp类型的列在第一次添加时，未指定默认值会默认为CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
|
||||
* 2. Timestamp类型的列在第二次时，必须指定默认值
|
||||
* 3. BLOB和TEXT类型不存在NULL、NOT NULL属性
|
||||
* 4. 部分数据类型是synonyms，实际show create table时会转成对应类型
|
||||
* 5. 非BLOB和TEXT类型在默认未指定NULL、NOT NULL时，默认default null
|
||||
* 6. 在列变更时，不仅变更列名数据类型，同时各个约束中列名也会变更，同时如果约束中包含key length，则变更后的数据类型不应违背key length的约束（有长度的应大于key length；BLOB、TEXT应有key length；可以在存在key length情况下变更为无key length的数据类型，约束中key length忽略；等等）
|
||||
* 7. 字符集每列（char类、eumn、set）默认保存，指定使用指定的，未指定使用表默认的，不受修改表默认字符集而改变，同表默认时，字符集显示省略
|
||||
* 8. 新建表默认innodb引擎，latin1字符集
|
||||
* 9. BLOB、TEXT会根据给定长度自动转换为对应的TINY、MEDIUM，LONG类型，长度和字符集也有关
|
||||
* 10. unique约束在没有指定索引名是非幂等的，会自动以约束索引第一个列名称命名，同时以_2,_3这种形式添加后缀
|
||||
* </pre>
|
||||
*/
|
||||
|
||||
for (int i = 0; i < sourceFields.size(); i++) {
|
||||
FieldMeta sourceField = sourceFields.get(i);
|
||||
FieldMeta targetField = targetFields.get(i);
|
||||
if (!StringUtils.equalsIgnoreCase(sourceField.getColumnName(), targetField.getColumnName())) {
|
||||
return false;
|
||||
}
|
||||
|
||||
// if (!StringUtils.equalsIgnoreCase(sourceField.getColumnType(),
|
||||
// targetField.getColumnType())) {
|
||||
// return false;
|
||||
// }
|
||||
|
||||
// https://github.com/alibaba/canal/issues/1100
|
||||
// 支持一下 int vs int(10)
|
||||
if ((sourceField.isUnsigned() && !targetField.isUnsigned())
|
||||
|| (!sourceField.isUnsigned() && targetField.isUnsigned())) {
|
||||
return false;
|
||||
}
|
||||
|
||||
String sourceColumnType = StringUtils.removeEndIgnoreCase(sourceField.getColumnType(), "zerofill").trim();
|
||||
String targetColumnType = StringUtils.removeEndIgnoreCase(targetField.getColumnType(), "zerofill").trim();
|
||||
|
||||
String sign = sourceField.isUnsigned() ? "unsigned" : "signed";
|
||||
sourceColumnType = StringUtils.removeEndIgnoreCase(sourceColumnType, sign).trim();
|
||||
targetColumnType = StringUtils.removeEndIgnoreCase(targetColumnType, sign).trim();
|
||||
|
||||
boolean columnTypeCompare = false;
|
||||
columnTypeCompare |= StringUtils.containsIgnoreCase(sourceColumnType, targetColumnType);
|
||||
columnTypeCompare |= StringUtils.containsIgnoreCase(targetColumnType, sourceColumnType);
|
||||
if (!columnTypeCompare) {
|
||||
// 去掉精度参数再对比一次
|
||||
sourceColumnType = synonymsType(StringUtils.substringBefore(sourceColumnType, "(")).trim();
|
||||
targetColumnType = synonymsType(StringUtils.substringBefore(targetColumnType, "(")).trim();
|
||||
columnTypeCompare |= StringUtils.containsIgnoreCase(sourceColumnType, targetColumnType);
|
||||
columnTypeCompare |= StringUtils.containsIgnoreCase(targetColumnType, sourceColumnType);
|
||||
if (!columnTypeCompare) {
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
// if (!StringUtils.equalsIgnoreCase(sourceField.getDefaultValue(),
|
||||
// targetField.getDefaultValue())) {
|
||||
// return false;
|
||||
// }
|
||||
|
||||
// BLOB, TEXT, GEOMETRY or JSON默认都是nullable，可以忽略比较，但比较了也是对齐
|
||||
if (StringUtils.containsIgnoreCase(sourceColumnType, "timestamp")
|
||||
|| StringUtils.containsIgnoreCase(targetColumnType, "timestamp")) {
|
||||
// timestamp可能会加default current_timestamp默认值,忽略对比nullable
|
||||
} else {
|
||||
if (sourceField.isNullable() != targetField.isNullable()) {
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
// mysql会有一种处理,针对show create只有uk没有pk时，会在desc默认将uk当做pk
|
||||
boolean isSourcePkOrUk = sourceField.isKey() || sourceField.isUnique();
|
||||
boolean isTargetPkOrUk = targetField.isKey() || targetField.isUnique();
|
||||
if (isSourcePkOrUk != isTargetPkOrUk) {
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
/**
|
||||
* <pre>
|
||||
* synonyms处理
|
||||
* 1. BOOL/BOOLEAN => TINYINT
|
||||
* 2. DEC/NUMERIC/FIXED => DECIMAL
|
||||
* 3. INTEGER => INT
|
||||
*
|
||||
*
|
||||
* </pre>
|
||||
*
|
||||
* @param originType
|
||||
* @return
|
||||
*/
|
||||
private static String synonymsType(String originType) {
|
||||
if (StringUtils.equalsIgnoreCase(originType, "bool") || StringUtils.equalsIgnoreCase(originType, "boolean")) {
|
||||
return "tinyint";
|
||||
} else if (StringUtils.equalsIgnoreCase(originType, "dec")
|
||||
|| StringUtils.equalsIgnoreCase(originType, "numeric")
|
||||
|| StringUtils.equalsIgnoreCase(originType, "fixed")) {
|
||||
return "decimal";
|
||||
} else if (StringUtils.equalsIgnoreCase(originType, "integer")) {
|
||||
return "int";
|
||||
} else if (StringUtils.equalsIgnoreCase(originType, "real")
|
||||
|| StringUtils.equalsIgnoreCase(originType, "double precision")) {
|
||||
return "double";
|
||||
}
|
||||
|
||||
// BLOB、TEXT会根据给定长度自动转换为对应的TINY、MEDIUM，LONG类型，长度和字符集也有关，统一按照blob对比
|
||||
if (StringUtils.equalsIgnoreCase(originType, "tinyblob")
|
||||
|| StringUtils.equalsIgnoreCase(originType, "mediumblob")
|
||||
|| StringUtils.equalsIgnoreCase(originType, "longblob")) {
|
||||
return "blob";
|
||||
} else if (StringUtils.equalsIgnoreCase(originType, "tinytext")
|
||||
|| StringUtils.equalsIgnoreCase(originType, "mediumtext")
|
||||
|| StringUtils.equalsIgnoreCase(originType, "longtext")) {
|
||||
return "text";
|
||||
}
|
||||
|
||||
return originType;
|
||||
return builder.append(structureSchema(schema))
|
||||
.append('.')
|
||||
.append('`')
|
||||
.append(StringUtils.replace(table, "`", "``"))
|
||||
.append('`')
|
||||
.toString();
|
||||
}
|
||||
|
||||
private int snapshotExpire(int expireTimestamp) {
|
||||
return metaSnapshotDAO.deleteByTimestamp(destination, expireTimestamp);
|
||||
}
|
||||
|
||||
public void setConnection(MysqlConnection connection) {
|
||||
this.connection = connection;
|
||||
}
|
||||
|
||||
public void setFilter(CanalEventFilter filter) {
|
||||
this.filter = filter;
|
||||
}
|
||||
@@ -689,22 +688,22 @@ public class DatabaseTableMeta implements TableMetaTSDB {
|
||||
this.blackFilter = blackFilter;
|
||||
}
|
||||
|
||||
public void setFieldFilterMap(Map<String, List<String>> fieldFilterMap) {
|
||||
this.fieldFilterMap = fieldFilterMap;
|
||||
}
|
||||
|
||||
public void setFieldBlackFilterMap(Map<String, List<String>> fieldBlackFilterMap) {
|
||||
this.fieldBlackFilterMap = fieldBlackFilterMap;
|
||||
}
|
||||
|
||||
public Map<String, List<String>> getFieldFilterMap() {
|
||||
return fieldFilterMap;
|
||||
}
|
||||
|
||||
public void setFieldFilterMap(Map<String, List<String>> fieldFilterMap) {
|
||||
this.fieldFilterMap = fieldFilterMap;
|
||||
}
|
||||
|
||||
public Map<String, List<String>> getFieldBlackFilterMap() {
|
||||
return fieldBlackFilterMap;
|
||||
}
|
||||
|
||||
public void setFieldBlackFilterMap(Map<String, List<String>> fieldBlackFilterMap) {
|
||||
this.fieldBlackFilterMap = fieldBlackFilterMap;
|
||||
}
|
||||
|
||||
public int getSnapshotInterval() {
|
||||
return snapshotInterval;
|
||||
}
|
||||
@@ -725,6 +724,10 @@ public class DatabaseTableMeta implements TableMetaTSDB {
|
||||
return connection;
|
||||
}
|
||||
|
||||
public void setConnection(MysqlConnection connection) {
|
||||
this.connection = connection;
|
||||
}
|
||||
|
||||
public boolean isUkDuplicateException(Throwable t) {
|
||||
if (pattern.matcher(t.getMessage()).find() || h2Pattern.matcher(t.getMessage()).find()) {
|
||||
// 违反外键约束时也抛出这种异常，所以这里还要判断包含字符串Duplicate entry
|
||||
|
||||
Reference in New Issue
Block a user