Self-hosted dashboard and admin auth (#4837)

Co-authored-by: kartik-mem0 <kartik.labhshetwar@mem0.ai>

server/alembic/env.py

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+from logging.config import fileConfig
+
+from alembic import context
+from sqlalchemy import engine_from_config, pool
+
+from db import Base, _build_database_url
+
+# Import models so Base.metadata picks up all tables
+import models  # noqa: F401
+
+config = context.config
+
+if config.config_file_name is not None:
+    fileConfig(config.config_file_name)
+
+target_metadata = Base.metadata
+
+# Override sqlalchemy.url from alembic.ini with the runtime database URL
+config.set_main_option("sqlalchemy.url", _build_database_url())
+
+
+def run_migrations_offline() -> None:
+    url = config.get_main_option("sqlalchemy.url")
+    context.configure(url=url, target_metadata=target_metadata, literal_binds=True)
+    with context.begin_transaction():
+        context.run_migrations()
+
+
+def run_migrations_online() -> None:
+    connectable = engine_from_config(
+        config.get_section(config.config_ini_section, {}),
+        prefix="sqlalchemy.",
+        poolclass=pool.NullPool,
+    )
+    with connectable.connect() as connection:
+        context.configure(connection=connection, target_metadata=target_metadata)
+        with context.begin_transaction():
+            context.run_migrations()
+
+
+if context.is_offline_mode():
+    run_migrations_offline()
+else:
+    run_migrations_online()

server/alembic/script.py.mako

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+"""${message}
+
+Revision ID: ${up_revision}
+Revises: ${down_revision | comma,n}
+Create Date: ${create_date}
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+${imports if imports else ""}
+
+# revision identifiers, used by Alembic.
+revision: str = ${repr(up_revision)}
+down_revision: Union[str, None] = ${repr(down_revision)}
+branch_labels: Union[str, Sequence[str], None] = ${repr(branch_labels)}
+depends_on: Union[str, Sequence[str], None] = ${repr(depends_on)}
+
+
+def upgrade() -> None:
+    ${upgrades if upgrades else "pass"}
+
+
+def downgrade() -> None:
+    ${downgrades if downgrades else "pass"}

server/alembic/versions/001_create_users_and_api_keys.py

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+"""Create users and api_keys tables
+
+Revision ID: 001
+Revises: None
+Create Date: 2026-04-10
+
+"""
+
+from typing import Sequence, Union
+
+import sqlalchemy as sa
+from alembic import op
+
+revision: str = "001"
+down_revision: Union[str, None] = None
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    op.create_table(
+        "users",
+        sa.Column("id", sa.Uuid(), primary_key=True),
+        sa.Column("name", sa.String(255), nullable=False),
+        sa.Column("email", sa.String(255), nullable=False),
+        sa.Column("password_hash", sa.Text(), nullable=False),
+        sa.Column("role", sa.String(20), nullable=False, server_default="admin"),
+        sa.Column("created_at", sa.DateTime(timezone=True), nullable=False, server_default=sa.func.now()),
+        sa.Column("last_login_at", sa.DateTime(timezone=True), nullable=True),
+        sa.UniqueConstraint("email"),
+    )
+    op.create_index("ix_users_email", "users", ["email"])
+
+    op.create_table(
+        "api_keys",
+        sa.Column("id", sa.Uuid(), primary_key=True),
+        sa.Column("key_prefix", sa.String(12), nullable=False),
+        sa.Column("key_hash", sa.Text(), nullable=False),
+        sa.Column("label", sa.String(255), nullable=False),
+        sa.Column("created_by", sa.Uuid(), sa.ForeignKey("users.id", ondelete="CASCADE"), nullable=False),
+        sa.Column("last_used_at", sa.DateTime(timezone=True), nullable=True),
+        sa.Column("revoked_at", sa.DateTime(timezone=True), nullable=True),
+        sa.Column("created_at", sa.DateTime(timezone=True), nullable=False, server_default=sa.func.now()),
+    )
+
+
+def downgrade() -> None:
+    op.drop_table("api_keys")
+    op.drop_table("users")

server/alembic/versions/002_create_request_logs.py

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+"""Create request_logs table
+
+Revision ID: 002
+Revises: 001
+Create Date: 2026-04-13
+
+"""
+
+from typing import Sequence, Union
+
+import sqlalchemy as sa
+from alembic import op
+
+revision: str = "002"
+down_revision: Union[str, None] = "001"
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    op.create_table(
+        "request_logs",
+        sa.Column("id", sa.Uuid(), primary_key=True),
+        sa.Column("method", sa.String(16), nullable=False),
+        sa.Column("path", sa.String(512), nullable=False),
+        sa.Column("status_code", sa.Integer(), nullable=False),
+        sa.Column("latency_ms", sa.Float(), nullable=False),
+        sa.Column("auth_type", sa.String(32), nullable=False, server_default="none"),
+        sa.Column("created_at", sa.DateTime(timezone=True), nullable=False, server_default=sa.func.now()),
+    )
+    op.create_index("ix_request_logs_created_at", "request_logs", ["created_at"])
+
+
+def downgrade() -> None:
+    op.drop_index("ix_request_logs_created_at", table_name="request_logs")
+    op.drop_table("request_logs")

server/alembic/versions/003_create_settings.py

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+"""Create settings table
+
+Revision ID: 003
+Revises: 002
+Create Date: 2026-04-15
+
+"""
+
+from typing import Sequence, Union
+
+import sqlalchemy as sa
+from alembic import op
+
+revision: str = "003"
+down_revision: Union[str, None] = "002"
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    op.create_table(
+        "settings",
+        sa.Column("key", sa.String(255), primary_key=True),
+        sa.Column("value", sa.Text(), nullable=False),
+        sa.Column("updated_at", sa.DateTime(timezone=True), nullable=False, server_default=sa.func.now()),
+    )
+
+
+def downgrade() -> None:
+    op.drop_table("settings")

server/alembic/versions/004_unique_admin_role.py

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+"""Enforce at-most-one admin via partial unique index
+
+Revision ID: 004
+Revises: 003
+Create Date: 2026-04-21
+
+"""
+
+from typing import Sequence, Union
+
+import sqlalchemy as sa
+from alembic import op
+
+revision: str = "004"
+down_revision: Union[str, None] = "003"
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    op.create_index(
+        "ix_users_only_one_admin",
+        "users",
+        ["role"],
+        unique=True,
+        postgresql_where=sa.text("role = 'admin'"),
+    )
+
+
+def downgrade() -> None:
+    op.drop_index("ix_users_only_one_admin", table_name="users")

server/alembic/versions/005_refresh_token_jtis.py

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+"""Create refresh_token_jtis table for single-use refresh tokens
+
+Revision ID: 005
+Revises: 004
+Create Date: 2026-04-21
+
+"""
+
+from typing import Sequence, Union
+
+import sqlalchemy as sa
+from alembic import op
+
+revision: str = "005"
+down_revision: Union[str, None] = "004"
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    op.create_table(
+        "refresh_token_jtis",
+        sa.Column("jti", sa.Uuid(), primary_key=True),
+        sa.Column(
+            "user_id",
+            sa.Uuid(),
+            sa.ForeignKey("users.id", ondelete="CASCADE"),
+            nullable=False,
+        ),
+        sa.Column("expires_at", sa.DateTime(timezone=True), nullable=False),
+        sa.Column("used_at", sa.DateTime(timezone=True), nullable=True),
+        sa.Column("created_at", sa.DateTime(timezone=True), nullable=False, server_default=sa.func.now()),
+    )
+    op.create_index("ix_refresh_token_jtis_expires_at", "refresh_token_jtis", ["expires_at"])
+
+
+def downgrade() -> None:
+    op.drop_index("ix_refresh_token_jtis_expires_at", table_name="refresh_token_jtis")
+    op.drop_table("refresh_token_jtis")

server/alembic/versions/006_request_logs_brin.py

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+"""Swap request_logs.created_at btree index for a BRIN index
+
+Revision ID: 006
+Revises: 005
+Create Date: 2026-04-21
+
+"""
+
+from typing import Sequence, Union
+
+from alembic import op
+
+revision: str = "006"
+down_revision: Union[str, None] = "005"
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    op.drop_index("ix_request_logs_created_at", table_name="request_logs")
+    op.execute("CREATE INDEX ix_request_logs_created_at ON request_logs USING BRIN (created_at)")
+
+
+def downgrade() -> None:
+    op.drop_index("ix_request_logs_created_at", table_name="request_logs")
+    op.create_index("ix_request_logs_created_at", "request_logs", ["created_at"])