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WalkthroughA new SQL data migration utility was introduced, including a comprehensive script for migrating data between MySQL databases with transformation logic for various tables. Supporting this, a structured Logger class was added for consistent logging. The Changes
Sequence Diagram(s)sequenceDiagram
participant User
participant NpmScript
participant SqlScript
participant Logger
participant SourceDB
participant TargetDB
User->>NpmScript: Run "npm run sql"
NpmScript->>SqlScript: Execute sqlScript.mjs
SqlScript->>SourceDB: Connect to source DB
SqlScript->>TargetDB: Connect to target DB
loop For each table
SqlScript->>SourceDB: Fetch rows from source table
SqlScript->>SqlScript: Transform rows
SqlScript->>TargetDB: Batch insert into target table
SqlScript->>Logger: Log progress
end
SqlScript->>Logger: Log migration completion
SqlScript->>SourceDB: Close connection
SqlScript->>TargetDB: Close connection
Estimated code review effort🎯 4 (Complex) | ⏱️ ~40 minutes Poem
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Actionable comments posted: 4
🧹 Nitpick comments (2)
scripts/sqlScript.mjs (2)
52-53: Use strict equality operatorsReplace loose equality (==) with strict equality (===) for better type safety.
- if (rows.length == 0) { + if (rows.length === 0) {- if (data.length == 0) { + if (data.length === 0) {Also applies to: 83-84
120-124: Extract repeated null handling to a helper functionThe pattern
item.field == null ? "1" : item.fieldis repeated many times. Consider extracting it to a helper function for better maintainability.+// Add this helper function at the top of the class +function defaultIfNull(value, defaultValue = "1") { + return value == null ? defaultValue : value; +} // Then in transform functions: -created_by: item.created_by == null ? "1" : item.created_by, +created_by: defaultIfNull(item.created_by),Also applies to: 187-190, 300-303, 337-340, 374-378, 394-397, 409-412, 437-441, 460-463, 509-513, 538-542, 559-562, 575-578
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📒 Files selected for processing (3)
package.json(2 hunks)scripts/logger.mjs(1 hunks)scripts/sqlScript.mjs(1 hunks)
🔇 Additional comments (6)
scripts/logger.mjs (1)
14-51: Logger implementation looks good!The Logger class provides a clean, structured approach for console logging with color-coded output. The implementation is well-organized and follows good practices.
package.json (2)
27-28: Script additions look goodThe new "sql" script correctly points to the migration script, and the trailing comma addition improves JSON formatting consistency.
69-69: Dependency Verification – mysql2@3.14.2
- Confirmed that
mysql2@3.14.2is the latest stable release as of July 2025.- No known unresolved security vulnerabilities; CVE-2024-21507 and other past issues were patched in earlier 3.x releases.
Changes look safe—approving this dependency update.
scripts/sqlScript.mjs (3)
282-289: Good handling of SQL-incompatible property namesThe transform functions correctly handle property names with hyphens (e.g., 'block-category_id') by using computed property access and renaming them to valid SQL identifiers. This prevents SQL syntax errors.
Also applies to: 311-318, 471-478, 483-490
684-687: Important migration conflict warningGood documentation about potential data conflicts when migrating block groups. This helps prevent data integrity issues.
29-30: Source and target pools use the same databaseBoth connection pools connect to the same database. If this is intentional for in-place transformation, consider adding a comment. If not, the target database configuration should be different.
Is the intention to transform data within the same database, or should there be separate source and target databases?
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Actionable comments posted: 1
♻️ Duplicate comments (4)
scripts/sqlScript.mjs (4)
17-37: Critical: Remove hardcoded database credentialsThis duplicates a previously identified security issue. The hardcoded database credentials in both
nodeConfigandjavaConfigpose serious security risks and should be externalized to environment variables.
93-119: Potential SQL injection risk with dynamic table namesThis duplicates a previously identified concern about SQL injection risks when dynamically interpolating table and column names, even though parameterized queries are used for values.
595-679: Consider using the established migration pattern for platform dataThis duplicates a previously identified inconsistency where the platform method uses raw SQL insertion instead of the established
migrateTablepattern used elsewhere in the script.
685-727: Add transaction support for data integrityThis duplicates a previously identified concern about the lack of transaction support, which could leave the database in an inconsistent state if migration fails partway through.
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🔇 Additional comments (2)
scripts/sqlScript.mjs (2)
43-85: LGTM: Well-structured migration methodThe
migrateTablemethod demonstrates good practices with proper connection management, parameterized queries, comprehensive error handling, and resource cleanup in the finally block.
582-584: Verify field mapping in tenant transformationThe field mappings appear to be swapped:
name_cn: item.tenant_id(assigning tenant_id to Chinese name)name_en: item.name_cn(assigning Chinese name to English name)Please verify this is intentional or if the mappings should be corrected.
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