fix: add command to install mysql triggers for CORE office_op DB

for use with datasync.  this also adds datasync support for
ProductCost preference

rattail_corepos/datasync/corepos.py

@@ -2,7 +2,7 @@
 ################################################################################
 #
 #  Rattail -- Retail Software Framework
-#  Copyright © 2010-2023 Lance Edgar
+#  Copyright © 2010-2024 Lance Edgar
 #
 #  This file is part of Rattail.
 #
@@ -26,12 +26,19 @@ DataSync for CORE POS
 
 import sqlalchemy as sa
 
-from corepos.db.office_op import Session as CoreSession, model as corepos
-
-from rattail.db import model
 from rattail.datasync import DataSyncWatcher, DataSyncImportConsumer
 
 
+def make_changes_table(table_name, metadata):
+    return sa.Table(
+        table_name, metadata,
+        sa.Column('id', sa.Integer(), nullable=False, primary_key=True),
+        sa.Column('object_type', sa.String(length=255), nullable=False),
+        sa.Column('object_key', sa.String(length=255), nullable=False),
+        sa.Column('deleted', sa.Boolean(), nullable=False, default=False),
+    )
+
+
 class CoreOfficeOpWatcher(DataSyncWatcher):
     """
     DataSync watcher for the CORE ``office_op`` database.
@@ -39,21 +46,19 @@ class CoreOfficeOpWatcher(DataSyncWatcher):
     prunes_changes = True
 
     def __init__(self, *args, **kwargs):
-        super(CoreOfficeOpWatcher, self).__init__(*args, **kwargs)
+        super().__init__(*args, **kwargs)
 
         self.changes_table_name = kwargs.get('changes_table_name',
                                              'datasync_changes')
 
         self.corepos_metadata = sa.MetaData()
-        self.corepos_changes = sa.Table(
-            self.changes_table_name, self.corepos_metadata,
-            sa.Column('id', sa.Integer(), nullable=False, primary_key=True),
-            sa.Column('object_type', sa.String(length=255), nullable=False),
-            sa.Column('object_key', sa.String(length=255), nullable=False),
-            sa.Column('deleted', sa.Boolean(), nullable=False, default=False))
+        self.corepos_changes = make_changes_table(self.changes_table_name,
+                                                  self.corepos_metadata)
 
     def get_changes(self, lastrun):
-        session = CoreSession()
+        model = self.model
+        corepos = self.app.get_corepos_handler()
+        session = corepos.make_session_office_op()
         result = session.execute(self.corepos_changes.select())
         changes = result.fetchall()
         session.close()
@@ -67,8 +72,9 @@ class CoreOfficeOpWatcher(DataSyncWatcher):
                 for c in changes]
 
     def prune_changes(self, keys):
+        corepos = self.app.get_corepos_handler()
+        session = corepos.make_session_office_op()
         deleted = 0
-        session = CoreSession()
         for key in keys:
             result = session.execute(self.corepos_changes.select()\
                                      .where(self.corepos_changes.c.id == key))
@@ -90,13 +96,17 @@ class COREPOSProductWatcher(DataSyncWatcher):
         if not lastrun:
             return
 
+        model = self.model
+        corepos = self.app.get_corepos_handler()
+        op_model = corepos.get_model_office_op()
+
         changes = []
-        session = CoreSession()
+        session = corepos.make_session_office_op()
         lastrun = self.localize_lastrun(session, lastrun)
 
         # Department
-        departments = session.query(corepos.Department)\
-                             .filter(corepos.Department.modified >= lastrun)\
+        departments = session.query(op_model.Department)\
+                             .filter(op_model.Department.modified >= lastrun)\
                              .all()
         if departments:
             changes.extend([
@@ -133,8 +143,8 @@ class COREPOSProductWatcher(DataSyncWatcher):
         #         for vendor in vendors])
 
         # Product
-        products = session.query(corepos.Product)\
-                          .filter(corepos.Product.modified >= lastrun)\
+        products = session.query(op_model.Product)\
+                          .filter(op_model.Product.modified >= lastrun)\
                           .all()
         if products:
             changes.extend([
@@ -236,9 +246,11 @@ class FromRattailToCore(DataSyncImportConsumer):
             self.invoke_importer(session, change)
 
     def get_host_object(self, session, change):
+        model = self.model
         return session.get(getattr(model, change.payload_type), change.payload_key)
 
     def get_customers(self, session, change):
+        model = self.model
         clientele = self.app.get_clientele_handler()
 
         if change.payload_type == 'Customer':
@@ -284,6 +296,7 @@ class FromRattailToCore(DataSyncImportConsumer):
         return []
 
     def get_vendor(self, session, change):
+        model = self.model
 
         if change.payload_type == 'Vendor':
             return session.get(model.Vendor, change.payload_key)
@@ -299,6 +312,7 @@ class FromRattailToCore(DataSyncImportConsumer):
                 return email.vendor
 
     def get_product(self, session, change):
+        model = self.model
 
         if change.payload_type == 'Product':
             return session.get(model.Product, change.payload_key)