Monorepo for Tangled
knotmirror: add redis cache to listLanguages
Signed-off-by: Seongmin Lee <git@boltless.me>
authored by
Seongmin Lee
and committed by
Tangled
(May 12, 2026, 11:47 AM +0300)
9acac4bf
e120048b
+45
-2
+1
knotmirror/config/config.go
+1
knotmirror/config/config.go
···
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PlcUrl string `env:"MIRROR_PLC_URL, default=https://plc.directory"`
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TapUrl string `env:"MIRROR_TAP_URL, default=http://localhost:2480"`
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DbUrl string `env:"MIRROR_DB_URL, required"`
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+
RedisAddr string `env:"MIRROR_REDIS_ADDR, required"`
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KnotUseSSL bool `env:"MIRROR_KNOT_USE_SSL, default=false"` // use SSL for Knot when not scheme is not specified
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KnotSSRF bool `env:"MIRROR_KNOT_SSRF, default=false"`
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GitRepoBasePath string `env:"MIRROR_GIT_BASEPATH, default=repos"`
+4
-1
knotmirror/knotmirror.go
+4
-1
knotmirror/knotmirror.go
···
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"time"
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"github.com/go-chi/chi/v5"
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"github.com/redis/go-redis/v9"
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"github.com/prometheus/client_golang/prometheus/promhttp"
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"tangled.org/core/idresolver"
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"tangled.org/core/knotmirror/config"
···
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if err != nil {
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return fmt.Errorf("initializing db: %w", err)
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}
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+
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rdb := redis.NewClient(&redis.Options{Addr: cfg.RedisAddr})
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resolver := idresolver.DefaultResolver(cfg.PlcUrl)
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···
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crawler := NewCrawler(logger, db)
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resyncer := NewResyncer(logger, db, gitm, cfg)
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adminpage := NewAdminServer(logger, db, resyncer)
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-
xrpc := xrpc.New(logger, cfg, db, resolver, knotstream)
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xrpc := xrpc.New(logger, cfg, db, rdb, resolver, knotstream)
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// maintain repository list with tap
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// NOTE: this can be removed once we introduce did-for-repo because then we can just listen to KnotStream for #identity events.
+30
knotmirror/xrpc/git_list_languages.go
+30
knotmirror/xrpc/git_list_languages.go
···
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3
import (
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"context"
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+
"encoding/json"
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"fmt"
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"math"
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"net/http"
···
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"tangled.org/core/knotserver/git"
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)
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const (
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RepoLanguagesByDid = "git_list_languages:repo:%s:%s"
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RepoLanguagesTTL = 24 * time.Hour
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)
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func (x *Xrpc) ListLanguages(w http.ResponseWriter, r *http.Request) {
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var (
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repoQuery = r.URL.Query().Get("repo")
···
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return
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}
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+
if val, err := x.rdb.Get(r.Context(), fmt.Sprintf(RepoLanguagesByDid, repo, ref)).Result(); err == nil {
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l.Debug("served from cache")
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var langs []*tangled.GitTempListLanguages_Language
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err = json.Unmarshal([]byte(val), &langs)
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if err == nil {
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writeJson(w, http.StatusOK, &tangled.GitTempListLanguages_Output{
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Ref: ref,
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Languages: langs,
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})
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return
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}
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}
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+
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out, err := x.listLanguages(r.Context(), repo, ref)
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if err != nil {
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l.Warn("local mirror failed, trying proxy", "err", err)
···
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if err != nil {
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return nil, fmt.Errorf("analyzing languages: %w", err)
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}
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+
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langs := sizesToLanguages(sizes)
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go func() {
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ctx := context.Background()
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encoded, err := json.Marshal(langs)
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if err != nil {
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return
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}
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x.rdb.Set(ctx, fmt.Sprintf(RepoLanguagesByDid, repo, ref), encoded, RepoLanguagesTTL)
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}()
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return &tangled.GitTempListLanguages_Output{
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Ref: ref,
+4
-1
knotmirror/xrpc/xrpc.go
+4
-1
knotmirror/xrpc/xrpc.go
···
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"github.com/bluesky-social/indigo/atproto/atclient"
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"github.com/go-chi/chi/v5"
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+
"github.com/redis/go-redis/v9"
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"tangled.org/core/api/tangled"
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"tangled.org/core/idresolver"
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"tangled.org/core/knotmirror/config"
···
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type Xrpc struct {
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cfg *config.Config
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db *sql.DB
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rdb *redis.Client
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resolver *idresolver.Resolver
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ks *knotstream.KnotStream
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logger *slog.Logger
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httpClient *http.Client
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}
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-
func New(logger *slog.Logger, cfg *config.Config, db *sql.DB, resolver *idresolver.Resolver, ks *knotstream.KnotStream) *Xrpc {
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func New(logger *slog.Logger, cfg *config.Config, db *sql.DB, rdb *redis.Client, resolver *idresolver.Resolver, ks *knotstream.KnotStream) *Xrpc {
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return &Xrpc{
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cfg: cfg,
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db: db,
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rdb: rdb,
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resolver: resolver,
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ks: ks,
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logger: log.SubLogger(logger, "xrpc"),
+6
nix/modules/knotmirror.nix
+6
nix/modules/knotmirror.nix
···
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cfg.package
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];
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services.redis.servers.knotmirror = {
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enable = true;
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port = 6377;
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};
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systemd.services.tap-knotmirror = {
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description = "knotmirror tap service";
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after = ["network.target"];
···
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"MIRROR_HOSTNAME=${cfg.hostname}"
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"MIRROR_TAP_URL=http://localhost:${toString cfg.tap.port}"
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"MIRROR_DB_URL=${cfg.dbUrl}"
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"MIRROR_REDIS_ADDR=localhost:6377"
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"MIRROR_GIT_BASEPATH=/var/lib/knotmirror/repos"
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"MIRROR_KNOT_USE_SSL=${boolToString cfg.knotUseSSL}"
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"MIRROR_KNOT_SSRF=${boolToString cfg.knotSSRF}"