mirror of https://github.com/tailscale/tailscale/
cmd/stunstamp: remove sqlite DB and API (#12604)
stunstamp now sends data to Prometheus via remote write, and Prometheus can serve the same data. Retaining and cleaning up old data in sqlite leads to long probing pauses, and it's not worth investing more effort to optimize the schema and/or concurrency model. Updates tailscale/corp#20344 Signed-off-by: Jordan Whited <jordan@tailscale.com>pull/12141/merge
Jordan Whited
4 days ago
committed by
GitHub
parent
3485e4bf5a
commit
94415e8029
@ -1,142 +0,0 @@
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// Copyright (c) Tailscale Inc & AUTHORS
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// SPDX-License-Identifier: BSD-3-Clause
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package main
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import (
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"compress/gzip"
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"encoding/json"
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"errors"
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"net/http"
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"net/url"
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"strconv"
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"strings"
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"time"
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sq "github.com/Masterminds/squirrel"
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)
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type api struct {
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db *db
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mux *http.ServeMux
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}
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func newAPI(db *db) *api {
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a := &api{
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db: db,
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}
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mux := http.NewServeMux()
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mux.HandleFunc("/query", a.query)
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a.mux = mux
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return a
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}
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type apiResult struct {
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At int `json:"at"` // time.Time.Unix()
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RegionID int `json:"regionID"`
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Hostname string `json:"hostname"`
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Af int `json:"af"` // 4 or 6
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Addr string `json:"addr"`
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Source int `json:"source"` // timestampSourceUserspace (0) or timestampSourceKernel (1)
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StableConn bool `json:"stableConn"`
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DstPort int `json:"dstPort"`
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RttNS *int `json:"rttNS"`
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}
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func getTimeBounds(vals url.Values) (from time.Time, to time.Time, err error) {
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lastForm, ok := vals["last"]
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if ok && len(lastForm) > 0 {
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dur, err := time.ParseDuration(lastForm[0])
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if err != nil {
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return time.Time{}, time.Time{}, err
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}
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now := time.Now()
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return now.Add(-dur), now, nil
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}
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fromForm, ok := vals["from"]
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if ok && len(fromForm) > 0 {
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fromUnixSec, err := strconv.Atoi(fromForm[0])
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if err != nil {
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return time.Time{}, time.Time{}, err
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}
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from = time.Unix(int64(fromUnixSec), 0)
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toForm, ok := vals["to"]
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if ok && len(toForm) > 0 {
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toUnixSec, err := strconv.Atoi(toForm[0])
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if err != nil {
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return time.Time{}, time.Time{}, err
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}
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to = time.Unix(int64(toUnixSec), 0)
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} else {
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return time.Time{}, time.Time{}, errors.New("from specified without to")
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}
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return from, to, nil
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}
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// no time bounds specified, default to last 1h
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now := time.Now()
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return now.Add(-time.Hour), now, nil
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}
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func (a *api) ServeHTTP(w http.ResponseWriter, r *http.Request) {
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a.mux.ServeHTTP(w, r)
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}
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func (a *api) query(w http.ResponseWriter, r *http.Request) {
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err := r.ParseForm()
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if err != nil {
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http.Error(w, err.Error(), 500)
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return
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}
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from, to, err := getTimeBounds(r.Form)
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if err != nil {
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http.Error(w, err.Error(), 500)
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return
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}
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sb := sq.Select("at_unix", "region_id", "hostname", "af", "address", "timestamp_source", "stable_conn", "dst_port", "rtt_ns").From("rtt")
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sb = sb.Where(sq.And{
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sq.GtOrEq{"at_unix": from.Unix()},
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sq.LtOrEq{"at_unix": to.Unix()},
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})
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query, args, err := sb.ToSql()
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if err != nil {
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return
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}
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rows, err := a.db.Query(query, args...)
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if err != nil {
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http.Error(w, err.Error(), 500)
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return
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}
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results := make([]apiResult, 0)
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for rows.Next() {
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rtt := 0
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result := apiResult{
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RttNS: &rtt,
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}
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err = rows.Scan(&result.At, &result.RegionID, &result.Hostname, &result.Af, &result.Addr, &result.Source, &result.StableConn, &result.DstPort, &result.RttNS)
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if err != nil {
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http.Error(w, err.Error(), 500)
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return
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}
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results = append(results, result)
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}
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if rows.Err() != nil {
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http.Error(w, rows.Err().Error(), 500)
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return
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}
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if strings.Contains(r.Header.Get("Accept-Encoding"), "gzip") {
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gz := gzip.NewWriter(w)
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defer gz.Close()
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w.Header().Set("Content-Encoding", "gzip")
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err = json.NewEncoder(gz).Encode(&results)
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} else {
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err = json.NewEncoder(w).Encode(&results)
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}
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if err != nil {
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http.Error(w, err.Error(), 500)
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return
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}
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}
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@ -1,26 +0,0 @@
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// Copyright (c) Tailscale Inc & AUTHORS
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// SPDX-License-Identifier: BSD-3-Clause
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//go:build !(windows && 386)
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package main
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import (
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"database/sql"
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_ "modernc.org/sqlite"
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)
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type db struct {
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*sql.DB
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}
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func newDB(path string) (*db, error) {
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d, err := sql.Open("sqlite", *flagOut)
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if err != nil {
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return nil, err
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}
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return &db{
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DB: d,
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}, nil
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}
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@ -1,17 +0,0 @@
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// Copyright (c) Tailscale Inc & AUTHORS
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// SPDX-License-Identifier: BSD-3-Clause
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package main
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import (
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"database/sql"
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"errors"
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)
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type db struct {
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*sql.DB
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}
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func newDB(path string) (*db, error) {
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return nil, errors.New("unsupported platform")
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}
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