64 lines
2.0 KiB
Python
64 lines
2.0 KiB
Python
"""Add telemetry_samples table for aggregated orchestrator metrics.
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Revision ID: 002
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Revises: 001
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Create Date: 2024-12-17
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This table stores aggregated telemetry from orchestrator instances.
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Uses a unique constraint on (instance_id, window_start) for de-duplication.
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"""
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from typing import Sequence, Union
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from alembic import op
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import sqlalchemy as sa
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from sqlalchemy.dialects import postgresql
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# revision identifiers, used by Alembic.
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revision: str = "002"
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down_revision: Union[str, None] = "001"
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branch_labels: Union[str, Sequence[str], None] = None
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depends_on: Union[str, Sequence[str], None] = None
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def upgrade() -> None:
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# Create telemetry_samples table
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op.create_table(
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"telemetry_samples",
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sa.Column("id", sa.UUID(), nullable=False),
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sa.Column("instance_id", sa.UUID(), nullable=False),
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# Time window
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sa.Column("window_start", sa.DateTime(timezone=True), nullable=False),
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sa.Column("window_end", sa.DateTime(timezone=True), nullable=False),
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# Orchestrator uptime
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sa.Column("uptime_seconds", sa.Integer(), nullable=False),
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# Aggregated metrics stored as JSONB
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sa.Column("metrics", postgresql.JSONB(astext_type=sa.Text()), nullable=False),
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# Foreign key and primary key
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sa.ForeignKeyConstraint(
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["instance_id"],
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["instances.id"],
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ondelete="CASCADE",
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),
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sa.PrimaryKeyConstraint("id"),
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# Unique constraint for de-duplication
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# Prevents double-counting if orchestrator retries submissions
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sa.UniqueConstraint(
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"instance_id",
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"window_start",
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name="uq_telemetry_instance_window",
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),
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)
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# Index on instance_id for efficient queries
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op.create_index(
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op.f("ix_telemetry_samples_instance_id"),
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"telemetry_samples",
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["instance_id"],
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unique=False,
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)
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def downgrade() -> None:
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op.drop_index(op.f("ix_telemetry_samples_instance_id"), table_name="telemetry_samples")
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op.drop_table("telemetry_samples")
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