[Fix](user-property) Preserve legacy user properties during desrialization (#65781)

Related PR: https://github.com/apache/doris/pull/37243

Problem Summary:

(Before doris-3.0)Older persisted `CommonUserProperties` JSON uses long
field names such as `resourceTags` and `sqlBlockRules`. The current
serialized names are `rt` and `sbr`, while the compatibility aliases
only covered the singular forms `resourceTag` and `sqlBlockRule`.

As a result, legacy user properties may be silently ignored during
metadata
deserialization, causing resource tags or SQL block rules to be reset to
their
default values.

This change adds compatibility aliases for the legacy plural field
names:

- `resourceTags`
- `sqlBlockRules`

fe/fe-core/src/main/java/org/apache/doris/mysql/privilege/CommonUserProperties.java

@@ -45,12 +45,12 @@ public class CommonUserProperties implements GsonPostProcessable {
     private long maxQueryInstances = -1;
     @SerializedName(value = "pfei", alternate = {"parallelFragmentExecInstanceNum"})
     private int parallelFragmentExecInstanceNum = -1;
-    @SerializedName(value = "sbr", alternate = {"sqlBlockRule"})
+    @SerializedName(value = "sbr", alternate = {"sqlBlockRule", "sqlBlockRules"})
     private String sqlBlockRules = "";
     @SerializedName(value = "crl", alternate = {"cpuResourceLimit"})
     private int cpuResourceLimit = -1;
     // The tag of the resource that the user is allowed to use
-    @SerializedName(value = "rt", alternate = {"resourceTag"})
+    @SerializedName(value = "rt", alternate = {"resourceTag", "resourceTags"})
     private Set<Tag> resourceTags = Sets.newHashSet();
     // user level exec_mem_limit, if > 0, will overwrite the exec_mem_limit in session variable
     @SerializedName(value = "eml", alternate = {"execMemLimit"})

fe/fe-core/src/test/java/org/apache/doris/mysql/privilege/CommonUserPropertiesTest.java

@@ -0,0 +1,86 @@
+// 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.doris.mysql.privilege;
+
+import org.apache.doris.persist.gson.GsonUtils;
+import org.apache.doris.resource.Tag;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+import java.util.Collections;
+
+public class CommonUserPropertiesTest {
+    private static final String RESOURCE_TAG_JSON = "[{\"type\":\"location\",\"value\":\"group_a\"}]";
+
+    @Test
+    public void testDeserializeResourceTagsFromAllFieldNames() {
+        for (String fieldName : new String[] {"rt", "resourceTag", "resourceTags"}) {
+            String json = String.format("{\"%s\":%s}", fieldName, RESOURCE_TAG_JSON);
+            CommonUserProperties properties = GsonUtils.GSON.fromJson(json, CommonUserProperties.class);
+
+            Assert.assertEquals(Collections.singleton(Tag.createNotCheck(Tag.TYPE_LOCATION, "group_a")),
+                    properties.getResourceTags());
+        }
+    }
+
+    @Test
+    public void testDeserializeSqlBlockRulesFromAllFieldNames() {
+        for (String fieldName : new String[] {"sbr", "sqlBlockRule", "sqlBlockRules"}) {
+            String json = String.format("{\"%s\":\"rule_a, rule_b\"}", fieldName);
+            CommonUserProperties properties = GsonUtils.GSON.fromJson(json, CommonUserProperties.class);
+
+            Assert.assertEquals("rule_a, rule_b", properties.getSqlBlockRules());
+            Assert.assertArrayEquals(new String[] {"rule_a", "rule_b"}, properties.getSqlBlockRulesSplit());
+        }
+    }
+
+    @Test
+    public void testDeserializeLegacyCommonUserProperties() {
+        String json = "{"
+                + "\"maxConn\":101,"
+                + "\"maxQueryInstances\":102,"
+                + "\"parallelFragmentExecInstanceNum\":103,"
+                + "\"sqlBlockRules\":\"rule_a, rule_b\","
+                + "\"cpuResourceLimit\":104,"
+                + "\"resourceTags\":" + RESOURCE_TAG_JSON + ","
+                + "\"execMemLimit\":105,"
+                + "\"queryTimeout\":106,"
+                + "\"insertTimeout\":107,"
+                + "\"workloadGroup\":\"legacy_group\","
+                + "\"enablePreferCachedRowset\":true,"
+                + "\"queryFreshnessTolerance\":108"
+                + "}";
+        CommonUserProperties properties = GsonUtils.GSON.fromJson(json, CommonUserProperties.class);
+
+        Assert.assertEquals(101L, properties.getMaxConn());
+        Assert.assertEquals(102L, properties.getMaxQueryInstances());
+        Assert.assertEquals(103, properties.getParallelFragmentExecInstanceNum());
+        Assert.assertEquals("rule_a, rule_b", properties.getSqlBlockRules());
+        Assert.assertArrayEquals(new String[] {"rule_a", "rule_b"}, properties.getSqlBlockRulesSplit());
+        Assert.assertEquals(104, properties.getCpuResourceLimit());
+        Assert.assertEquals(Collections.singleton(Tag.createNotCheck(Tag.TYPE_LOCATION, "group_a")),
+                properties.getResourceTags());
+        Assert.assertEquals(105L, properties.getExecMemLimit());
+        Assert.assertEquals(106, properties.getQueryTimeout());
+        Assert.assertEquals(107, properties.getInsertTimeout());
+        Assert.assertEquals("legacy_group", properties.getWorkloadGroup());
+        Assert.assertTrue(properties.getEnablePreferCachedRowset());
+        Assert.assertEquals(108L, properties.getQueryFreshnessToleranceMs());
+    }
+}