Add Label Studio adapter module and its build scipts.

runtime/label-studio-adapter/alembic/README

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+Generic single-database configuration.

runtime/label-studio-adapter/alembic/env.py

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+from logging.config import fileConfig
+
+from sqlalchemy import engine_from_config
+from sqlalchemy import pool
+from sqlalchemy import create_engine, text
+
+from alembic import context
+import os
+from urllib.parse import quote_plus
+
+# 导入应用配置和模型
+from app.core.config import settings
+from app.db.database import Base
+# 导入所有模型，以便 autogenerate 能够检测到它们
+from app.models import dataset_mapping  # noqa
+
+# this is the Alembic Config object, which provides
+# access to the values within the .ini file in use.
+config = context.config
+
+
+def ensure_database_and_user():
+    """
+    确保数据库和用户存在
+    使用 root 用户连接 MySQL，创建数据库和应用用户
+    """
+    # 只在 MySQL 配置时执行
+    if not settings.mysql_host:
+        return
+    
+    mysql_root_password = os.getenv('MYSQL_ROOT_PASSWORD', 'Huawei@123')
+    
+    # URL 编码密码以处理特殊字符
+    encoded_password = quote_plus(mysql_root_password)
+    
+    # 使用 root 用户连接（不指定数据库）
+    root_url = f"mysql+pymysql://root:{encoded_password}@{settings.mysql_host}:{settings.mysql_port}/"
+    
+    try:
+        root_engine = create_engine(root_url, poolclass=pool.NullPool)
+        with root_engine.connect() as conn:
+            # 创建数据库（如果不存在）
+            conn.execute(text(
+                f"CREATE DATABASE IF NOT EXISTS `{settings.mysql_database}` "
+                f"CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci"
+            ))
+            conn.commit()
+            
+            # 创建用户（如果不存在）- 使用 MySQL 8 默认的 caching_sha2_password
+            conn.execute(text(
+                f"CREATE USER IF NOT EXISTS '{settings.mysql_user}'@'%' "
+                f"IDENTIFIED BY '{settings.mysql_password}'"
+            ))
+            conn.commit()
+            
+            # 授予权限
+            conn.execute(text(
+                f"GRANT ALL PRIVILEGES ON `{settings.mysql_database}`.* TO '{settings.mysql_user}'@'%'"
+            ))
+            conn.commit()
+            
+            # 刷新权限
+            conn.execute(text("FLUSH PRIVILEGES"))
+            conn.commit()
+            
+        root_engine.dispose()
+        print(f"✓ Database '{settings.mysql_database}' and user '{settings.mysql_user}' are ready")
+    except Exception as e:
+        print(f"⚠️  Warning: Could not ensure database and user: {e}")
+        print(f"   This may be expected if database already exists or permissions are set")
+
+
+# 从应用配置设置数据库 URL
+config.set_main_option('sqlalchemy.url', settings.sync_database_url)
+
+# Interpret the config file for Python logging.
+# This line sets up loggers basically.
+if config.config_file_name is not None:
+    fileConfig(config.config_file_name)
+
+# add your model's MetaData object here
+# for 'autogenerate' support
+# from myapp import mymodel
+# target_metadata = mymodel.Base.metadata
+target_metadata = Base.metadata
+
+# other values from the config, defined by the needs of env.py,
+# can be acquired:
+# my_important_option = config.get_main_option("my_important_option")
+# ... etc.
+
+
+def run_migrations_offline() -> None:
+    """Run migrations in 'offline' mode.
+
+    This configures the context with just a URL
+    and not an Engine, though an Engine is acceptable
+    here as well.  By skipping the Engine creation
+    we don't even need a DBAPI to be available.
+
+    Calls to context.execute() here emit the given string to the
+    script output.
+
+    """
+    url = config.get_main_option("sqlalchemy.url")
+    context.configure(
+        url=url,
+        target_metadata=target_metadata,
+        literal_binds=True,
+        dialect_opts={"paramstyle": "named"},
+    )
+
+    with context.begin_transaction():
+        context.run_migrations()
+
+
+def run_migrations_online() -> None:
+    """Run migrations in 'online' mode.
+
+    In this scenario we need to create an Engine
+    and associate a connection with the context.
+
+    """
+    # 先确保数据库和用户存在
+    ensure_database_and_user()
+    
+    connectable = engine_from_config(
+        config.get_section(config.config_ini_section, {}),
+        prefix="sqlalchemy.",
+        poolclass=pool.NullPool,
+    )
+
+    with connectable.connect() as connection:
+        context.configure(
+            connection=connection, target_metadata=target_metadata
+        )
+
+        with context.begin_transaction():
+            context.run_migrations()
+
+
+if context.is_offline_mode():
+    run_migrations_offline()
+else:
+    run_migrations_online()

runtime/label-studio-adapter/alembic/script.py.mako

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+"""${message}
+
+Revision ID: ${up_revision}
+Revises: ${down_revision | comma,n}
+Create Date: ${create_date}
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+${imports if imports else ""}
+
+# revision identifiers, used by Alembic.
+revision: str = ${repr(up_revision)}
+down_revision: Union[str, Sequence[str], None] = ${repr(down_revision)}
+branch_labels: Union[str, Sequence[str], None] = ${repr(branch_labels)}
+depends_on: Union[str, Sequence[str], None] = ${repr(depends_on)}
+
+
+def upgrade() -> None:
+    """Upgrade schema."""
+    ${upgrades if upgrades else "pass"}
+
+
+def downgrade() -> None:
+    """Downgrade schema."""
+    ${downgrades if downgrades else "pass"}

runtime/label-studio-adapter/alembic/versions/755dc1afb8ad_initiation.py

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+"""Initiation
+
+Revision ID: 755dc1afb8ad
+Revises: 
+Create Date: 2025-10-20 19:34:20.258554
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision: str = '755dc1afb8ad'
+down_revision: Union[str, Sequence[str], None] = None
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    """Upgrade schema."""
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.create_table('mapping',
+    sa.Column('mapping_id', sa.String(length=36), nullable=False),
+    sa.Column('source_dataset_id', sa.String(length=36), nullable=False, comment='源数据集ID'),
+    sa.Column('labelling_project_id', sa.String(length=36), nullable=False, comment='标注项目ID'),
+    sa.Column('labelling_project_name', sa.String(length=255), nullable=True, comment='标注项目名称'),
+    sa.Column('created_at', sa.DateTime(timezone=True), server_default=sa.text('now()'), nullable=True, comment='创建时间'),
+    sa.Column('last_updated_at', sa.DateTime(timezone=True), server_default=sa.text('now()'), nullable=True, comment='最后更新时间'),
+    sa.Column('deleted_at', sa.DateTime(timezone=True), nullable=True, comment='删除时间'),
+    sa.PrimaryKeyConstraint('mapping_id')
+    )
+    # ### end Alembic commands ###
+
+
+def downgrade() -> None:
+    """Downgrade schema."""
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_table('mapping')
+    # ### end Alembic commands ###