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"""Peewee migrations -- 009_add_models.py.
Some examples (model - class or model name)::
> Model = migrator.orm['table_name'] # Return model in current state by name
> Model = migrator.ModelClass # Return model in current state by name
> migrator.sql(sql) # Run custom SQL
> migrator.run(func, *args, **kwargs) # Run python function with the given args
> migrator.create_model(Model) # Create a model (could be used as decorator)
> migrator.remove_model(model, cascade=True) # Remove a model
> migrator.add_fields(model, **fields) # Add fields to a model
> migrator.change_fields(model, **fields) # Change fields
> migrator.remove_fields(model, *field_names, cascade=True)
> migrator.rename_field(model, old_field_name, new_field_name)
> migrator.rename_table(model, new_table_name)
> migrator.add_index(model, *col_names, unique=False)
> migrator.add_not_null(model, *field_names)
> migrator.add_default(model, field_name, default)
> migrator.add_constraint(model, name, sql)
> migrator.drop_index(model, *col_names)
> migrator.drop_not_null(model, *field_names)
> migrator.drop_constraints(model, *constraints)
"""
from contextlib import suppress
import peewee as pw
from peewee_migrate import Migrator
import json
from utils.misc import parse_ollama_modelfile
with suppress(ImportError):
import playhouse.postgres_ext as pw_pext
def migrate(migrator: Migrator, database: pw.Database, *, fake=False):
"""Write your migrations here."""
# Fetch data from 'modelfile' table and insert into 'model' table
migrate_modelfile_to_model(migrator, database)
# Drop the 'modelfile' table
migrator.remove_model("modelfile")
def migrate_modelfile_to_model(migrator: Migrator, database: pw.Database):
ModelFile = migrator.orm["modelfile"]
Model = migrator.orm["model"]
modelfiles = ModelFile.select()
for modelfile in modelfiles:
# Extract and transform data in Python
modelfile.modelfile = json.loads(modelfile.modelfile)
meta = json.dumps(
{
"description": modelfile.modelfile.get("desc"),
"profile_image_url": modelfile.modelfile.get("imageUrl"),
"ollama": {"modelfile": modelfile.modelfile.get("content")},
"suggestion_prompts": modelfile.modelfile.get("suggestionPrompts"),
"categories": modelfile.modelfile.get("categories"),
"user": {**modelfile.modelfile.get("user", {}), "community": True},
}
)
info = parse_ollama_modelfile(modelfile.modelfile.get("content"))
# Insert the processed data into the 'model' table
Model.create(
id=f"ollama-{modelfile.tag_name}",
user_id=modelfile.user_id,
base_model_id=info.get("base_model_id"),
name=modelfile.modelfile.get("title"),
meta=meta,
params=json.dumps(info.get("params", {})),
created_at=modelfile.timestamp,
updated_at=modelfile.timestamp,
)
def rollback(migrator: Migrator, database: pw.Database, *, fake=False):
"""Write your rollback migrations here."""
recreate_modelfile_table(migrator, database)
move_data_back_to_modelfile(migrator, database)
migrator.remove_model("model")
def recreate_modelfile_table(migrator: Migrator, database: pw.Database):
query = """
CREATE TABLE IF NOT EXISTS modelfile (
user_id TEXT,
tag_name TEXT,
modelfile JSON,
timestamp BIGINT
)
"""
migrator.sql(query)
def move_data_back_to_modelfile(migrator: Migrator, database: pw.Database):
Model = migrator.orm["model"]
Modelfile = migrator.orm["modelfile"]
models = Model.select()
for model in models:
# Extract and transform data in Python
meta = json.loads(model.meta)
modelfile_data = {
"title": model.name,
"desc": meta.get("description"),
"imageUrl": meta.get("profile_image_url"),
"content": meta.get("ollama", {}).get("modelfile"),
"suggestionPrompts": meta.get("suggestion_prompts"),
"categories": meta.get("categories"),
"user": {k: v for k, v in meta.get("user", {}).items() if k != "community"},
}
# Insert the processed data back into the 'modelfile' table
Modelfile.create(
user_id=model.user_id,
tag_name=model.id,
modelfile=modelfile_data,
timestamp=model.created_at,
)
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