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hit.go
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hit.go
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// Copyright © Martin Tournoij – This file is part of GoatCounter and published
// under the terms of a slightly modified EUPL v1.2 license, which can be found
// in the LICENSE file or at https://license.goatcounter.com
package goatcounter
import (
"context"
"fmt"
"net/url"
"slices"
"strings"
"time"
"zgo.at/errors"
"zgo.at/zdb"
"zgo.at/zstd/zbool"
"zgo.at/zstd/zint"
"zgo.at/zstd/ztime"
)
type Hit struct {
ID int64 `db:"hit_id" json:"-"`
Site int64 `db:"site_id" json:"-"`
PathID int64 `db:"path_id" json:"-"`
RefID int64 `db:"ref_id" json:"-"`
SizeID *int64 `db:"size_id" json:"-"`
BrowserID int64 `db:"browser_id" json:"-"`
SystemID int64 `db:"system_id" json:"-"`
CampaignID *int64 `db:"campaign" json:"-"`
Session zint.Uint128 `db:"session" json:"-"`
Path string `db:"-" json:"p,omitempty"`
Title string `db:"-" json:"t,omitempty"`
Ref string `db:"-" json:"r,omitempty"`
Event zbool.Bool `db:"-" json:"e,omitempty"`
Size Floats `db:"-" json:"s,omitempty"`
Query string `db:"-" json:"q,omitempty"`
Bot int `db:"bot" json:"b,omitempty"`
RefScheme *string `db:"ref_scheme" json:"-"`
UserAgentHeader string `db:"-" json:"-"`
Location string `db:"location" json:"-"`
Language *string `db:"language" json:"-"`
FirstVisit zbool.Bool `db:"first_visit" json:"-"`
CreatedAt time.Time `db:"created_at" json:"-"`
RefURL *url.URL `db:"-" json:"-"` // Parsed Ref
Random string `db:"-" json:"rnd"` // Browser cache buster, as they don't always listen to Cache-Control
// Some values we need to pass from the HTTP handler to memstore
RemoteAddr string `db:"-" json:"-"`
UserSessionID string `db:"-" json:"-"`
NoStore bool `db:"-" json:"-"` // Don't store in hits (still store in stats).
noProcess bool `db:"-" json:"-"` // Don't process in memstore; for merging paths.
}
func (h *Hit) Ignore() bool {
// kproxy.com; not easy to get the original path, so just ignore it.
if strings.HasPrefix(h.Path, "/servlet/redirect.srv/") {
return true
}
// Almost certainly some broken HTML or whatnot.
if strings.Contains(h.Path, "<html>") || strings.Contains(h.Path, "<HTML>") {
return true
}
// Don't record favicon from logfiles.
if h.Path == "/favicon.ico" {
return true
}
return false
}
func (h *Hit) cleanPath(ctx context.Context) {
h.Path = strings.TrimSpace(h.Path)
if h.Event {
h.Path = strings.TrimLeft(h.Path, "/")
return
}
if h.Path == "" { // Don't fill empty path to "/"
return
}
h.Path = "/" + strings.Trim(h.Path, "/")
// Normalize the path when accessed from e.g. offline storage or internet
// archive.
{
// Some offline reader thing.
// /storage/emulated/[..]/Curl_to_shell_isn_t_so_bad2019-11-09-11-07-58/curl-to-sh.html
if strings.HasPrefix(h.Path, "/storage/emulated/0/Android/data/jonas.tool.saveForOffline/files/") {
h.Path = h.Path[65:]
if s := strings.IndexRune(h.Path, '/'); s > -1 {
h.Path = h.Path[s:]
}
}
// Internet archive.
// /web/20200104233523/https://www.arp242.net/tmux.html
if strings.HasPrefix(h.Path, "/web/20") {
u, err := url.Parse(h.Path[20:])
if err == nil {
h.Path = u.Path
if h.Path == "" {
h.Path = "/"
}
if q := u.Query().Encode(); q != "" {
h.Path += "?" + q
}
}
}
}
// Remove various tracking query parameters.
{
h.Path = strings.TrimRight(h.Path, "?&")
if !strings.Contains(h.Path, "?") { // No query parameters.
return
}
u, err := url.Parse(h.Path)
if err != nil {
return
}
q := u.Query()
q.Del("fbclid") // Magic undocumented Facebook tracking parameter.
q.Del("ref") // ProductHunt and a few others.
q.Del("mc_cid") // MailChimp
q.Del("mc_eid")
for k := range q { // Google tracking parameters.
if strings.HasPrefix(k, "utm_") {
q.Del(k)
}
}
q.Del("gclid") // AdWords click ID
// Some WeChat tracking thing; see e.g:
// https://translate.google.com/translate?sl=auto&tl=en&u=https%3A%2F%2Fsheshui.me%2Fblogs%2Fexplain-wechat-nsukey-url
// https://translate.google.com/translate?sl=auto&tl=en&u=https%3A%2F%2Fwww.v2ex.com%2Ft%2F312163
q.Del("nsukey")
q.Del("isappinstalled")
if q.Get("from") == "singlemessage" || q.Get("from") == "groupmessage" {
q.Del("from")
}
// Cloudflare
q.Del("__cf_chl_captcha_tk__")
q.Del("__cf_chl_jschl_tk__")
// Added by Weibo.cn (a sort of Chinese Twitter), with a random ID:
// /?continueFlag=4020a77be9019cf14fefc373267aa46e
// /?continueFlag=c397418f4346f293408b311b1bc819d4
// Presumably a tracking thing?
q.Del("continueFlag")
q.Del("_x_tr_sl") // Google translate
q.Del("_x_tr_hl")
q.Del("_x_tr_pto")
if q.Has("_x_tr_tl") { // Rename the destination language.
q.Set("translate-to", q.Get("_x_tr_tl"))
q.Del("_x_tr_tl")
}
u.RawQuery = q.Encode()
h.Path = "/" + strings.Trim(u.String(), "/")
}
}
// Defaults sets fields to default values, unless they're already set.
func (h *Hit) Defaults(ctx context.Context, initial bool) error {
site := MustGetSite(ctx)
h.Site = site.ID
if h.CreatedAt.IsZero() {
h.CreatedAt = ztime.Now()
}
if h.Event {
h.Path = strings.TrimLeft(h.Path, "/")
// In case people send "/" as the event path.
if h.Path == "" {
h.Path = "(no event name)"
}
} else {
h.cleanPath(ctx)
}
// Set campaign.
if !h.Event && h.Query != "" {
if h.Query[0] != '?' {
h.Query = "?" + h.Query
}
u, err := url.Parse(h.Query)
if err != nil {
return errors.Wrap(err, "Hit.Defaults")
}
q := u.Query()
// Get referral from query
for _, c := range []string{"utm_source", "ref", "src", "source"} {
v := strings.TrimSpace(q.Get(c))
if v == "" {
continue
}
h.Ref = v
h.RefURL = nil
h.RefScheme = RefSchemeCampaign
break
}
// Get campaign.
for _, c := range []string{"utm_campaign", "campaign"} {
v := strings.TrimSpace(q.Get(c))
if v == "" {
continue
}
c := Campaign{Name: v}
err := c.ByName(ctx, c.Name)
if err != nil && !zdb.ErrNoRows(err) {
return errors.Wrap(err, "Hit.Defaults")
}
if zdb.ErrNoRows(err) {
err := c.Insert(ctx)
if err != nil {
return errors.Wrap(err, "Hit.Defaults")
}
}
h.CampaignID = &c.ID
h.RefScheme = RefSchemeCampaign
}
}
if h.RefScheme == nil && h.Ref != "" && h.RefURL != nil {
if h.RefURL.Scheme == "http" || h.RefURL.Scheme == "https" {
h.RefScheme = RefSchemeHTTP
} else {
h.RefScheme = RefSchemeOther
}
var generated bool
h.Ref, generated = cleanRefURL(h.Ref, h.RefURL)
if generated {
h.RefScheme = RefSchemeGenerated
}
}
h.Ref = strings.TrimRight(h.Ref, "/")
if initial {
return nil
}
// Get or insert path.
path := Path{Path: h.Path, Title: h.Title, Event: h.Event}
err := path.GetOrInsert(ctx)
if err != nil {
return errors.Wrap(err, "Hit.Defaults")
}
h.PathID = path.ID
// Get or insert ref.
ref := Ref{Ref: h.Ref, RefScheme: h.RefScheme}
err = ref.GetOrInsert(ctx)
if err != nil {
return errors.Wrap(err, "Hit.Defaults")
}
h.RefID = ref.ID
// Get or insert size.
if site.Settings.Collect.Has(CollectScreenSize) {
var size Size
err = size.GetOrInsert(ctx, h.Size)
if err != nil {
return errors.Wrap(err, "Hit.Defaults")
}
h.SizeID = &size.ID
}
// Get or insert browser and system.
if site.Settings.Collect.Has(CollectUserAgent) {
ua := UserAgent{UserAgent: h.UserAgentHeader}
err = ua.GetOrInsert(ctx)
if err != nil {
return errors.Wrap(err, "Hit.Defaults")
}
h.BrowserID = ua.BrowserID
h.SystemID = ua.SystemID
}
return nil
}
// Validate the object.
func (h *Hit) Validate(ctx context.Context, initial bool) error {
v := NewValidate(ctx)
v.Required("site", h.Site)
//v.Required("session", h.Session)
v.Required("created_at", h.CreatedAt)
v.UTF8("ref", h.Ref)
v.Len("ref", h.Ref, 0, 2048)
// Small margin as client's clocks may not be 100% accurate.
if h.CreatedAt.After(ztime.Now().Add(5 * time.Second)) {
v.Append("created_at", "in the future")
}
if initial {
v.Required("path", h.Path)
v.UTF8("path", h.Path)
v.UTF8("title", h.Title)
v.UTF8("user_agent_header", h.UserAgentHeader)
v.Len("path", h.Path, 1, 2048)
v.Len("title", h.Title, 0, 1024)
v.Len("user_agent_header", h.UserAgentHeader, 0, 512)
} else {
v.Required("path_id", h.PathID)
if MustGetSite(ctx).Settings.Collect.Has(CollectUserAgent) {
v.Required("browser_id", h.BrowserID)
v.Required("system_id", h.SystemID)
}
}
return v.ErrorOrNil()
}
type Hits []Hit
// TestList lists all hits, for all sites, with browser_id, system_id, and paths
// set.
//
// This is intended for tests.
func (h *Hits) TestList(ctx context.Context, siteOnly bool) error {
var hh []struct {
Hit
B int64 `db:"browser_id"`
S int64 `db:"system_id"`
P string `db:"path"`
T string `db:"title"`
E zbool.Bool `db:"event"`
R string `db:"ref"`
Size Floats `db:"size"`
}
err := zdb.Select(ctx, &hh, `/* Hits.TestList */
select
hits.*,
browser_id,
system_id,
paths.path,
paths.title,
paths.event,
refs.ref,
sizes.size
from hits
join paths using (path_id)
left join refs using (ref_id)
left join sizes using (size_id)
{{:site_only where hits.site_id = :site}}
order by hit_id asc`,
map[string]any{
"site": MustGetSite(ctx).ID,
"site_only": siteOnly,
})
if err != nil {
return errors.Wrap(err, "Hits.TestList")
}
for _, x := range hh {
x.Hit.BrowserID = x.B
x.Hit.SystemID = x.S
x.Hit.Path = x.P
x.Hit.Title = x.T
x.Hit.Event = x.E
x.Hit.Ref = x.R
x.Hit.Size = x.Size
*h = append(*h, x.Hit)
}
return nil
}
// Purge the given paths.
func (h *Hits) Purge(ctx context.Context, pathIDs []int64) error {
query := `/* Hits.Purge */
delete from %s where site_id=? and path_id in (?)`
return zdb.TX(ctx, func(ctx context.Context) error {
site := MustGetSite(ctx).ID
for _, t := range append(statTables, "hit_counts", "ref_counts", "hits", "paths") {
err := zdb.Exec(ctx, fmt.Sprintf(query, t), site, pathIDs)
if err != nil {
return errors.Wrapf(err, "Hits.Purge %s", t)
}
}
MustGetSite(ctx).ClearCache(ctx, true)
return nil
})
}
// Merge the given paths.
func (h *Hits) Merge(ctx context.Context, dst int64, pathIDs []int64) error {
// Shouldn't happen, but just in case.
pathIDs = slices.DeleteFunc(pathIDs, func(p int64) bool { return p == dst })
site := MustGetSite(ctx).ID
err := (&Path{}).ByID(ctx, dst) // Ensure this site owns the path.
if err != nil {
return errors.Wrap(err, "Hits.Merge")
}
// Push back to lot to memstore to re-add it again, and then just call
// Purge() to delete the old ones.
err = zdb.Select(ctx, h, `select * from hits where site_id=? and path_id in (?)`, site, pathIDs)
if err != nil {
return errors.Wrap(err, "Hits.Merge")
}
hh := *h
for i := range hh {
hh[i].PathID = dst
hh[i].noProcess = true
}
err = errors.Wrap(h.Purge(ctx, pathIDs), "Hits.Merge")
if err != nil {
return errors.Wrap(err, "Hits.Merge")
}
// Only push back if delete worked.
Memstore.Append(hh...)
return nil
}