Mercurial > libervia-backend
comparison libervia/backend/memory/sqla_mapping.py @ 4095:684ba556a617
core (memory/sqla_mapping): fix legacy pickled values:
folloing packages refactoring, legacy pickled values could not be unpickled (due to use of
old classes). This temporary workaround fix it, but the right thing to do will be to move
from pickle to JSON at some point.
| author | Goffi <goffi@goffi.org> |
|---|---|
| date | Mon, 12 Jun 2023 14:57:27 +0200 |
| parents | 4b842c1fb686 |
| children | 02f0adc745c6 |
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| 4094:c3b68fdc2de7 | 4095:684ba556a617 |
|---|---|
| 100 try: | 100 try: |
| 101 value = value.encode() | 101 value = value.encode() |
| 102 except AttributeError: | 102 except AttributeError: |
| 103 pass | 103 pass |
| 104 # "utf-8" encoding is needed to handle Python 2 pickled data | 104 # "utf-8" encoding is needed to handle Python 2 pickled data |
| 105 return pickle.loads(value, encoding="utf-8") | 105 try: |
| 106 return pickle.loads(value, encoding="utf-8") | |
| 107 except ModuleNotFoundError: | |
| 108 # FIXME: workaround due to package renaming, need to move all pickle code to | |
| 109 # JSON | |
| 110 return pickle.loads( | |
| 111 value.replace(b"sat.plugins", b"libervia.backend.plugins"), | |
| 112 encoding="utf-8" | |
| 113 ) | |
| 106 | 114 |
| 107 | 115 |
| 108 class Json(TypeDecorator): | 116 class Json(TypeDecorator): |
| 109 """Handle JSON field in DB independant way""" | 117 """Handle JSON field in DB independant way""" |
| 110 # Blob is used on SQLite but gives errors when used here, while Text works fine | 118 # Blob is used on SQLite but gives errors when used here, while Text works fine |