david
30a93a868e
Add cmd/ingotctl with four subcommands: blocks (list with stats), inspect (series/postings dump), chunks (decode raw samples by ref), and fsck (CRC and index integrity validation across all blocks). Add cmd/ingothttp with JSON query endpoints: /api/v1/query_range (Prometheus-style matrix response), /api/v1/read (matcher-based read requests), and /epi/v1/status (DB stats snapshot). Uses JSON instead of protobuf to maintain zero dependencies. Add self-instrumentation via the normal Appender path so metrics are queryable with the same API: ingot_head_series, ingot_head_chunks_active, ingot_blocks_total, ingot_compactions_total, ingot_wal_fsync_duration_seconds. Supporting changes: block.Validate() and block.ReadMeta() exports, Head.Stats() for series/chunk counts, WAL.LastSyncDuration() with timed fsync tracking, DB.Stats() for the HTTP status endpoint.
59 lines
1.4 KiB
Go
59 lines
1.4 KiB
Go
// Command ingothttp serves a minimal HTTP query API for an ingot database.
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//
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// Endpoints:
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//
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// GET /api/v1/query_range?query={name}&start={unix_ms}&end={unix_ms}
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// POST /api/v1/read (JSON ReadRequest body)
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// GET /api/v1/status (DB summary stats)
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//
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// This is a demo/bridge for Grafana integration, not a full PromQL engine.
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// The query parameter is a metric name (matched as __name__=<query>).
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package main
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import (
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"flag"
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"fmt"
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"log"
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"net/http"
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"os"
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"os/signal"
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"syscall"
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"git.dvdt.dev/david/ingot"
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)
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func main() {
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var (
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dataDir = flag.String("data", "./data", "ingot data directory")
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addr = flag.String("addr", ":9001", "HTTP listen address")
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)
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flag.Parse()
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db, err := ingot.Open(*dataDir, ingot.Options{})
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if err != nil {
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log.Fatalf("failed to open db: %v", err)
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}
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defer db.Close()
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h := newHandler(db)
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mux := http.NewServeMux()
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mux.HandleFunc("/api/v1/query_range", h.queryRange)
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mux.HandleFunc("/api/v1/read", h.read)
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mux.HandleFunc("/api/v1/status", h.status)
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srv := &http.Server{Addr: *addr, Handler: mux}
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go func() {
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sig := make(chan os.Signal, 1)
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signal.Notify(sig, syscall.SIGINT, syscall.SIGTERM)
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<-sig
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fmt.Fprintln(os.Stderr, "\nshutting down...")
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srv.Close()
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}()
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log.Printf("ingothttp listening on %s (data: %s)", *addr, *dataDir)
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if err := srv.ListenAndServe(); err != http.ErrServerClosed {
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log.Fatal(err)
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}
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}
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