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268 lines
10 KiB
Python
268 lines
10 KiB
Python
import datetime
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import json
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from typing import List
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from sqlalchemy import and_, text
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from sqlmodel import select
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from apps.datasource.utils.utils import aes_decrypt
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from apps.db.db import get_engine, get_tables, get_fields, exec_sql
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from apps.db.engine import get_engine_config
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from apps.db.engine import get_engine_conn
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from apps.db.type import db_type_relation
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from common.core.deps import SessionDep, CurrentUser
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from common.utils.utils import deepcopy_ignore_extra
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from ..crud.field import delete_field_by_ds_id, update_field
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from ..crud.table import delete_table_by_ds_id, update_table
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from ..models.datasource import CoreDatasource, CreateDatasource, CoreTable, CoreField, ColumnSchema, TableObj, \
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DatasourceConf, TableAndFields
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def get_datasource_list(session: SessionDep):
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statement = select(CoreDatasource).order_by(CoreDatasource.create_time.desc())
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datasource_list = session.exec(statement).fetchall()
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return datasource_list
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def get_ds(session: SessionDep, id: int):
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statement = select(CoreDatasource).where(CoreDatasource.id == id)
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datasource = session.exec(statement).first()
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return datasource
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def check_status(session: SessionDep, ds: CoreDatasource):
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conn = get_engine(ds)
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try:
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with conn.connect() as connection:
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print("success")
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return True
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except Exception as e:
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print("Fail:", e)
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return False
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def create_ds(session: SessionDep, user: CurrentUser, create_ds: CreateDatasource):
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ds = CoreDatasource()
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deepcopy_ignore_extra(create_ds, ds)
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ds.create_time = datetime.datetime.now()
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# status = check_status(session, ds)
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ds.create_by = user.id
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ds.status = "Success"
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ds.type_name = db_type_relation()[ds.type]
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record = CoreDatasource(**ds.model_dump())
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session.add(record)
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session.flush()
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session.refresh(record)
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ds.id = record.id
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session.commit()
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# save tables and fields
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sync_table(session, ds, create_ds.tables)
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return ds
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def chooseTables(session: SessionDep, id: int, tables: List[CoreTable]):
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ds = session.query(CoreDatasource).filter(CoreDatasource.id == id).first()
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sync_table(session, ds, tables)
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def update_ds(session: SessionDep, ds: CoreDatasource):
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ds.id = int(ds.id)
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status = check_status(session, ds)
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ds.status = "Success" if status is True else "Fail"
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record = session.exec(select(CoreDatasource).where(CoreDatasource.id == ds.id)).first()
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update_data = ds.model_dump(exclude_unset=True)
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for field, value in update_data.items():
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setattr(record, field, value)
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session.add(record)
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session.commit()
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return ds
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def delete_ds(session: SessionDep, id: int):
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term = session.exec(select(CoreDatasource).where(CoreDatasource.id == id)).first()
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if term.type == "excel":
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# drop all tables for current datasource
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engine = get_engine_conn()
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conf = DatasourceConf(**json.loads(aes_decrypt(term.configuration)))
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with engine.connect() as conn:
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for sheet in conf.sheets:
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conn.execute(text(f'DROP TABLE IF EXISTS "{sheet["tableName"]}"'))
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conn.commit()
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session.delete(term)
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session.commit()
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delete_table_by_ds_id(session, id)
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delete_field_by_ds_id(session, id)
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return {
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"message": f"Datasource with ID {id} deleted successfully."
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}
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def getTables(session: SessionDep, id: int):
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ds = session.exec(select(CoreDatasource).where(CoreDatasource.id == id)).first()
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tables = get_tables(ds)
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return tables
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def getTablesByDs(session: SessionDep, ds: CoreDatasource):
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tables = get_tables(ds)
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return tables
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def getFields(session: SessionDep, id: int, table_name: str):
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ds = session.exec(select(CoreDatasource).where(CoreDatasource.id == id)).first()
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fields = get_fields(ds, table_name)
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return fields
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def getFieldsByDs(session: SessionDep, ds: CoreDatasource, table_name: str):
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fields = get_fields(ds, table_name)
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return fields
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def execSql(session: SessionDep, id: int, sql: str):
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ds = session.exec(select(CoreDatasource).where(CoreDatasource.id == id)).first()
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return exec_sql(ds, sql)
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def sync_table(session: SessionDep, ds: CoreDatasource, tables: List[CoreTable]):
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id_list = []
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for item in tables:
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statement = select(CoreTable).where(and_(CoreTable.ds_id == ds.id, CoreTable.table_name == item.table_name))
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record = session.exec(statement).first()
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# update exist table, only update table_comment
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if record is not None:
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item.id = record.id
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id_list.append(record.id)
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record.table_comment = item.table_comment
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session.add(record)
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session.commit()
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else:
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# save new table
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table = CoreTable(ds_id=ds.id, checked=True, table_name=item.table_name, table_comment=item.table_comment,
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custom_comment=item.table_comment)
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session.add(table)
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session.flush()
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session.refresh(table)
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item.id = table.id
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id_list.append(table.id)
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session.commit()
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# sync field
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fields = getFieldsByDs(session, ds, item.table_name)
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sync_fields(session, ds, item, fields)
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if len(id_list) > 0:
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session.query(CoreTable).filter(and_(CoreTable.ds_id == ds.id, CoreTable.id.not_in(id_list))).delete(
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synchronize_session=False)
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session.query(CoreField).filter(and_(CoreField.ds_id == ds.id, CoreField.table_id.not_in(id_list))).delete(
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synchronize_session=False)
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session.commit()
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def sync_fields(session: SessionDep, ds: CoreDatasource, table: CoreTable, fields: List[ColumnSchema]):
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id_list = []
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for item in fields:
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statement = select(CoreField).where(
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and_(CoreField.table_id == table.id, CoreField.field_name == item.fieldName))
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record = session.exec(statement).first()
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if record is not None:
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item.id = record.id
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id_list.append(record.id)
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record.field_comment = item.fieldComment
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session.add(record)
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session.commit()
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else:
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field = CoreField(ds_id=ds.id, table_id=table.id, checked=True, field_name=item.fieldName,
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field_type=item.fieldType, field_comment=item.fieldComment,
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custom_comment=item.fieldComment)
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session.add(field)
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session.flush()
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session.refresh(field)
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item.id = field.id
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id_list.append(field.id)
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session.commit()
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if len(id_list) > 0:
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session.query(CoreField).filter(and_(CoreField.table_id == table.id, CoreField.id.not_in(id_list))).delete(
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synchronize_session=False)
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session.commit()
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def update_table_and_fields(session: SessionDep, data: TableObj):
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update_table(session, data.table)
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for field in data.fields:
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update_field(session, field)
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def updateTable(session: SessionDep, table: CoreTable):
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update_table(session, table)
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def updateField(session: SessionDep, field: CoreField):
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update_field(session, field)
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def preview(session: SessionDep, id: int, data: TableObj):
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ds = session.query(CoreDatasource).filter(CoreDatasource.id == id).first()
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conf = DatasourceConf(**json.loads(aes_decrypt(ds.configuration))) if ds.type != "excel" else get_engine_config()
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sql: str = ""
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if ds.type == "mysql":
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sql = f"""SELECT `{"`, `".join([f.field_name for f in data.fields if f.checked])}` FROM `{data.table.table_name}` LIMIT 100"""
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elif ds.type == "sqlServer":
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sql = f"""SELECT [{"], [".join([f.field_name for f in data.fields if f.checked])}] FROM [{conf.dbSchema}].[{data.table.table_name}]
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ORDER BY [{data.fields[0].field_name}]
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OFFSET 0 ROWS FETCH NEXT 100 ROWS ONLY"""
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elif ds.type == "pg" or ds.type == "excel":
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sql = f"""SELECT "{'", "'.join([f.field_name for f in data.fields if f.checked])}" FROM "{conf.dbSchema}"."{data.table.table_name}" LIMIT 100"""
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elif ds.type == "oracle":
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sql = f"""SELECT "{'", "'.join([f.field_name for f in data.fields if f.checked])}" FROM "{conf.dbSchema}"."{data.table.table_name}"
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ORDER BY "{data.fields[0].field_name}"
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OFFSET 0 ROWS FETCH NEXT 100 ROWS ONLY"""
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return exec_sql(ds, sql)
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def get_table_obj_by_ds(session: SessionDep, ds: CoreDatasource) -> List[TableAndFields]:
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_list: List = []
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tables = session.query(CoreTable).filter(CoreTable.ds_id == ds.id).all()
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conf = DatasourceConf(**json.loads(aes_decrypt(ds.configuration))) if ds.type != "excel" else get_engine_config()
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schema = conf.dbSchema if conf.dbSchema is not None and conf.dbSchema != "" else conf.database
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for table in tables:
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fields = session.query(CoreField).filter(and_(CoreField.table_id == table.id, CoreField.checked == True)).all()
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_list.append(TableAndFields(schema=schema, table=table, fields=fields))
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return _list
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def get_table_schema(session: SessionDep, ds: CoreDatasource) -> str:
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schema_str = ""
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table_objs = get_table_obj_by_ds(session=session, ds=ds)
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if len(table_objs) == 0:
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return schema_str
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db_name = table_objs[0].schema
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schema_str += f"【DB_ID】 {db_name}\n【Schema】\n"
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for obj in table_objs:
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schema_str += f"# Table: {db_name}.{obj.table.table_name}"
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table_comment = ''
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if obj.table.custom_comment:
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table_comment = obj.table.custom_comment.strip()
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if table_comment == '':
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schema_str += '\n[\n'
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else:
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schema_str += f", {table_comment}\n[\n"
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field_list = []
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for field in obj.fields:
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field_comment = ''
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if field.custom_comment:
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field_comment = field.custom_comment.strip()
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if field_comment == '':
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field_list.append(f"({field.field_name}:{field.field_type})")
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else:
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field_list.append(f"({field.field_name}:{field.field_type}, {field_comment})")
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schema_str += ",\n".join(field_list)
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schema_str += '\n]\n'
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return schema_str
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