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https://github.com/GNS3/gns3-server.git
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fc7275878e
Replace deferred UniqueConstraints with partial unique indexes for user and group default configurations in the LLM model configs table. This change improves performance and ensures at most one default config per user/group while maintaining data integrity. The migration script has been updated accordingly to create and drop the new indexes.
84 lines
3.8 KiB
Python
84 lines
3.8 KiB
Python
#!/usr/bin/env python
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#
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# Copyright (C) 2026 GNS3 Technologies Inc.
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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from sqlalchemy import Column, Boolean, ForeignKey, CheckConstraint, Index, Integer, String, text
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from sqlalchemy.dialects.postgresql import JSONB
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from sqlalchemy.orm import relationship
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from .base import BaseTable, generate_uuid, GUID
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import logging
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log = logging.getLogger(__name__)
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class LLMModelConfig(BaseTable):
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"""
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LLM model configuration for users and user groups.
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Supports inheritance: users can inherit configs from their groups.
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"""
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__tablename__ = "llm_model_configs"
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config_id = Column(GUID, primary_key=True, default=generate_uuid)
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name = Column(String(100), nullable=False) # Configuration name (table-level for indexing)
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model_type = Column(String(50), nullable=False) # Model type: text, vision, stt, tts, multimodal, etc.
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config = Column(JSONB, nullable=False) # Config fields: provider, base_url, model, temperature, api_key, etc.
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user_id = Column(GUID, ForeignKey("users.user_id", ondelete="CASCADE"), nullable=True)
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group_id = Column(GUID, ForeignKey("user_groups.user_group_id", ondelete="CASCADE"), nullable=True)
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is_default = Column(Boolean, default=False, nullable=False)
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version = Column(Integer, default=0, nullable=False) # Optimistic locking version
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# Reserved fields for future use (currently unused in code)
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reserved_jsonb_1 = Column(JSONB, nullable=True)
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reserved_jsonb_2 = Column(JSONB, nullable=True)
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reserved_jsonb_3 = Column(JSONB, nullable=True)
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# Relationships
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user = relationship("User", backref="llm_model_configs")
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group = relationship("UserGroup", backref="llm_model_configs")
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# Constraints
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__table_args__ = (
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# Ensure a config belongs to either a user or a group, not both
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CheckConstraint(
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"(user_id IS NOT NULL AND group_id IS NULL) OR "
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"(user_id IS NULL AND group_id IS NOT NULL)",
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name="single_owner_check"
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),
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# Validate model_type values
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CheckConstraint(
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"model_type IN ('text', 'vision', 'stt', 'tts', 'multimodal', 'embedding', 'reranking', 'other')",
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name="valid_model_type_check"
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),
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# Each user can have at most one default config (partial unique index)
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Index("unique_user_default", "user_id", unique=True,
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postgresql_where=text("is_default = TRUE AND user_id IS NOT NULL")),
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# Each group can have at most one default config (partial unique index)
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Index("unique_group_default", "group_id", unique=True,
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postgresql_where=text("is_default = TRUE AND group_id IS NOT NULL")),
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# Indexes for efficient queries
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Index("idx_llm_model_configs_user_id", "user_id"),
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Index("idx_llm_model_configs_group_id", "group_id"),
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Index("idx_llm_model_configs_model_type", "model_type"),
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Index("idx_llm_model_configs_config", "config", postgresql_using="gin"),
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)
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def __repr__(self):
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owner = f"user_{self.user_id}" if self.user_id else f"group_{self.group_id}"
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return f"<LLMModelConfig {self.name} ({self.model_type}) for {owner} (default={self.is_default}, version={self.version})>"
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