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Add fallback for schema upgrade on ancient MySQL servers

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This commit is contained in:
Mike Primm 2022-03-08 21:17:32 -06:00
parent a765f728f1
commit 042f387ecf
1 changed files with 15 additions and 5 deletions
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20
DynmapCore/src/main/java/org/dynmap/storage/mysql/MySQLMapStorage.java
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@ -5,6 +5,7 @@ import java.io.FileWriter;
import java.io.IOException;
import java.nio.charset.Charset;
import java.sql.Connection;
import java.sql.DatabaseMetaData;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
@ -370,6 +371,8 @@ public class MySQLMapStorage extends MapStorage {
Connection c = null;
try {
c = getConnection(); // Get connection (create DB if needed)
DatabaseMetaData md = c.getMetaData();
Log.info("Connected to " + md.getDatabaseProductName() + " v" + md.getDatabaseMajorVersion() + "." + md.getDatabaseMinorVersion());
Statement stmt = c.createStatement();
ResultSet rs = stmt.executeQuery( "SELECT level FROM " + tableSchemaVersion + ";");
if (rs.next()) {
@ -502,7 +505,7 @@ public class MySQLMapStorage extends MapStorage {
doUpdate(c, "UPDATE " + tableSchemaVersion + " SET level=2 WHERE level = 1;");
version = 2;
} catch (SQLException x) {
logSQLException("Error updating tables to version=1", x);
logSQLException("Error updating tables to version=2", x);
err = true;
return false;
} finally {
@ -520,7 +523,7 @@ public class MySQLMapStorage extends MapStorage {
doUpdate(c, "UPDATE " + tableSchemaVersion + " SET level=3 WHERE level = 2;");
version = 3;
} catch (SQLException x) {
logSQLException("Error updating tables to version=2", x);
logSQLException("Error updating tables to version=3", x);
err = true;
return false;
} finally {
@ -538,7 +541,7 @@ public class MySQLMapStorage extends MapStorage {
doUpdate(c, "UPDATE " + tableSchemaVersion + " SET level=4 WHERE level = 3;");
version = 4;
} catch (SQLException x) {
logSQLException("Error updating tables to version=3", x);
logSQLException("Error updating tables to version=4", x);
err = true;
return false;
} finally {
@ -550,6 +553,7 @@ public class MySQLMapStorage extends MapStorage {
try {
Log.info("Updating database schema from version = " + version);
c = getConnection();
DatabaseMetaData md = c.getMetaData();
// See if we are recovering from bug where version was still set to 4 when NewImage was added initialli
PreparedStatement stmt = c.prepareStatement("SHOW COLUMNS FROM " + tableTiles + " WHERE Field = 'NewImage';");
ResultSet rs = stmt.executeQuery();
@ -560,12 +564,18 @@ public class MySQLMapStorage extends MapStorage {
rs.close();
stmt.close();
if (!inplace) {
doUpdate(c, "ALTER TABLE " + tableTiles + " ADD COLUMN NewImage MEDIUMBLOB, ALGORITHM=INPLACE, LOCK=NONE");
try {
doUpdate(c, "ALTER TABLE " + tableTiles + " ADD COLUMN NewImage MEDIUMBLOB, ALGORITHM=INPLACE, LOCK=NONE");
} catch (SQLException x) {
Log.info("Updating tiles table using legacy method - this might take a while and may need a lot of database space...");
doUpdate(c, "ALTER TABLE " + tableTiles + " ADD COLUMN NewImage MEDIUMBLOB");
Log.info("Legacy tile update completed");
}
}
doUpdate(c, "UPDATE " + tableSchemaVersion + " SET level=5 WHERE level = 4;");
version = 5;
} catch (SQLException x) {
logSQLException("Error updating tables to version=3", x);
logSQLException("Error updating tables to version=5", x);
err = true;
return false;
} finally {