bvandeusenandClaude Opus 5.5
3cb2a95054
A bundled prometheus plugin, on by default like the other protocol plugins. Targets are rows edited on its page: address, bearer token (encrypted), interval, keep/leave-out name patterns and a series cap. Steward does the filtering; the endpoint serves everything (Archives' ruling). - A 5 s tick scrapes due targets at once, each within a 30 s deadline, and writes the outcome to its row and its series through record_metrics, so alert rules can watch any of them. - Gauges are stored as they are; counters (and a histogram's or summary's _sum/_count) as <name>_per_sec rates from the second scrape. Buckets and quantiles are skipped. A labelled series is stored under "<target>:k=v,…". Each target also records is_up, scrape_ms, series_kept and series_capped. - Pages: targets not answering first, with why; a target's series grouped by metric with their newest values; a chart per series; the editor with Test, which scrapes once and says what would be stored. - The counter-to-rate keeper moves to steward/core/counter_rates.py; SNMP's RateKeeper now scales its rate on top of it. - metric_value reads Prometheus's _seconds as a span and _per_sec as a rate. - The catalog guard treats an empty list as a dynamic source (snmp, prometheus), as the rule form does. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
47 lines
2.0 KiB
Python
47 lines
2.0 KiB
Python
"""Prometheus scrape targets are rows edited on the Prometheus page
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Each row is a /metrics endpoint: where it is, its bearer token (encrypted),
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how often to scrape it, which series to keep, and the newest scrape's
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outcome (milestone 506).
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Revision ID: prometheus_001_targets
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Revises: (none — a branch off core via depends_on)
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Create Date: 2026-10-12
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"""
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from typing import Sequence, Union
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import sqlalchemy as sa
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from alembic import op
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revision: str = "prometheus_001_targets"
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down_revision: Union[str, None] = None
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branch_labels: Union[str, Sequence[str], None] = "prometheus"
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depends_on: Union[str, Sequence[str], None] = ("0004_app_settings",)
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def upgrade() -> None:
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op.create_table(
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"prometheus_targets",
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sa.Column("id", sa.String(36), primary_key=True),
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sa.Column("name", sa.String(100), nullable=False, unique=True),
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sa.Column("url", sa.String(500), nullable=False),
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sa.Column("token", sa.Text, nullable=False, server_default=""),
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sa.Column("verify_tls", sa.Boolean, nullable=False, server_default=sa.true()),
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sa.Column("interval_seconds", sa.Integer, nullable=False, server_default="60"),
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sa.Column("keep", sa.JSON, nullable=False, server_default="[]"),
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sa.Column("drop", sa.JSON, nullable=False, server_default="[]"),
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sa.Column("series_cap", sa.Integer, nullable=False, server_default="1000"),
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sa.Column("enabled", sa.Boolean, nullable=False, server_default=sa.true()),
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sa.Column("created_at", sa.DateTime(timezone=True), nullable=False),
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sa.Column("last_scraped_at", sa.DateTime(timezone=True), nullable=True),
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sa.Column("last_ok_at", sa.DateTime(timezone=True), nullable=True),
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sa.Column("last_error", sa.Text, nullable=True),
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sa.Column("last_kept", sa.Integer, nullable=False, server_default="0"),
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sa.Column("last_dropped", sa.Integer, nullable=False, server_default="0"),
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sa.Column("last_capped", sa.Integer, nullable=False, server_default="0"),
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)
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def downgrade() -> None:
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op.drop_table("prometheus_targets")
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