Prom ql builder#52
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Add end-to-end PromQL support across Explore, Dashboards and Unified
Alerting, mirroring Grafana's native Prometheus plugin in Code mode.
- Go backend (pkg/plugin): new /prometheus/api/v1/query{,_range} path
used by Unified Alerting, with matrix/vector/scalar decoding,
RFC3339+unix timestamp support, and a URL builder that preserves
RawQuery (fixes 404s caused by JoinPath escaping `?`).
- Frontend datasource: PromQL range/instant dispatch, metadata helpers
(labels, label values, series, metadata, metric names), and typed
variable queries (label_names, label_values, metrics, query_result).
- QueryEditor: Monaco-based PromQL editor with tokenizer, context-aware
completion (metrics + scoped labels/values via /series and /labels
match[]), signature help, hover docs, Lezer-backed error squiggles,
per-datasource query history. UTF-8 metric names (`process.cpu.time`)
are treated as one word for filtering.
- Alerting: metrics datasets always evaluate as PromQL; non-metrics
streams keep SQL with a default backfill so /eval never fires empty.
- Run queries button surfaces in Dashboard and Alerting; Explore keeps
Grafana's top-bar Run. Blur commits text without auto-running.
- Dataset terminology: listStreams → listDatasets (via /api/prism/v1/home),
filtered to metrics-type datasets in PromQL mode.
- Local-dev: add alertmanager service to docker-compose for alert
delivery testing (not included in the release bundle).
Resolved conflicts in QueryEditor.tsx, datasource.ts, StreamInfoPanel.tsx, docker-compose.yaml, and types.ts. Alerting branch superset of origin/main: keeps PromQL Code mode + completions/hover/parser/history utilities from PR #51, plus alerting additions (Monitor mode, PromBuilder, StreamInfoPanel sidebar, autoRunQuery wrapper, label/values time-range + limit scoping, SQL autocomplete, byte/event sanitizers, ptrace caps for dev compose). Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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