Add deleted column to api_keys table in ToolShed

Since the toolshed uses a duplicated `api_keys` table we sadly need to duplicate the migration too...

lib/tool_shed/webapp/model/__init__.py

@@ -90,6 +90,7 @@ class APIKeys(Base, _HasTable):
     user_id = Column(ForeignKey("galaxy_user.id"), index=True)
     key = Column(TrimmedString(32), index=True, unique=True)
     user = relationship("User", back_populates="api_keys")
+    deleted = Column(Boolean, index=True, default=False)
 
 
 class User(Base, Dictifiable, _HasTable):

lib/tool_shed/webapp/model/migrate/versions/0027_add_api_keys_deleted_column.py

@@ -0,0 +1,52 @@
+"""
+Migration script to add deleted column to API keys
+"""
+
+import datetime
+import logging
+
+from sqlalchemy import (
+    Boolean,
+    Column,
+    MetaData,
+    Table,
+)
+
+now = datetime.datetime.utcnow
+log = logging.getLogger(__name__)
+metadata = MetaData()
+
+TABLE_NAME = "api_keys"
+COLUMN_NAME = "deleted"
+
+
+def upgrade(migrate_engine):
+    metadata.bind = migrate_engine
+    print(__doc__)
+    metadata.reflect()
+
+    deleted_column = Column(COLUMN_NAME, Boolean)
+    __add_column(deleted_column, TABLE_NAME, metadata)
+
+
+def downgrade(migrate_engine):
+    metadata.bind = migrate_engine
+    metadata.reflect()
+
+    __drop_column(COLUMN_NAME, TABLE_NAME, metadata)
+
+
+def __add_column(column, table_name, metadata, **kwds):
+    try:
+        table = Table(table_name, metadata, autoload=True)
+        column.create(table, **kwds)
+    except Exception:
+        log.exception("Adding column %s failed.", column)
+
+
+def __drop_column(column_name, table_name, metadata):
+    try:
+        table = Table(table_name, metadata, autoload=True)
+        getattr(table.c, column_name).drop()
+    except Exception:
+        log.exception("Dropping column %s failed.", column_name)