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MemoryTableMeta ddl 处理注释2 (#2694)

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* MemoryTableMeta ddl 处理注释

* MemoryTableMeta ddl 处理注释2
This commit is contained in:
zhaohua
2020-08-20 21:19:08 +08:00
committed by GitHub
parent e4726972de
commit 182163c3bd
1 changed files with 34 additions and 1 deletions
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35
parse/src/main/java/com/alibaba/otter/canal/parse/inbound/mysql/tsdb/MemoryTableMeta.java
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@@ -81,7 +81,8 @@ public class MemoryTableMeta implements TableMetaTSDB {
&& !StringUtils.startsWithIgnoreCase(StringUtils.trim(ddl), "alter user")
&& !StringUtils.startsWithIgnoreCase(StringUtils.trim(ddl), "drop user")
&& !StringUtils.startsWithIgnoreCase(StringUtils.trim(ddl), "create database")) {
repository.console(ddl);
String sql = trimSimpleComment(ddl);
repository.console(sql);
}
} catch (Throwable e) {
logger.warn("parse faield : " + ddl, e);
@@ -97,6 +98,38 @@ public class MemoryTableMeta implements TableMetaTSDB {
return true;
}
/**
* 过滤简单的行与块注释（--或# 开始的行 /*开始与*\/结束的块）
*
* @param sql
* @return
*/
private String trimSimpleComment(String sql) {
String[] sqls = sql.split("\n");
if (sqls.length == 1) return sql;
boolean isCommentBlock = false;
StringBuilder sb = new StringBuilder(sql.length());
for (String psql : sqls) {
if (psql.startsWith("--") || psql.startsWith("#")) {
continue;
} else if (psql.trim().length() == 0) {
sb.append("\n");
}
if (!isCommentBlock && !psql.trim().startsWith("/*") && !psql.trim().endsWith("*/")) {
sb.append(psql).append("\n");
continue;
}
if (!isCommentBlock && psql.trim().startsWith("/*")) {
isCommentBlock = true;
}
if (isCommentBlock && psql.trim().endsWith("*/")) {
isCommentBlock = false;
}
}
return sb.toString();
}
@Override
public TableMeta find(String schema, String table) {
List<String> keys = Arrays.asList(schema, table);