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Rename acl cahce

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This commit is contained in:
binwiederhier
2026-05-31 11:42:54 -04:00
parent 4b87a27326
commit 03d405ed80
3 changed files with 18 additions and 18 deletions
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user/access_cache.go
+8 -8
View File
@@ -8,7 +8,7 @@ import (
"heckel.io/ntfy/v2/db"
)
// aclCache is an in-memory index over the entire user_access table.
// accessCache is an in-memory index over the entire user_access table.
//
// exact[username][escapedTopic] returns the matching entry in O(1) for the common
// case where the requested topic appears verbatim in some rule. The key is the
@@ -18,7 +18,7 @@ import (
// pattern[username] is the linear-scan list of %-bearing rules for that user.
// Walked per request; trivially small in practice. Wildcards are NOT u_everyone-
// only -- any user can create them.
type aclCache struct {
type accessCache struct {
exact map[string]map[string]aclEntry
pattern map[string][]aclEntry
mu sync.RWMutex // Protect exact and pattern
@@ -35,7 +35,7 @@ type aclCache struct {
//
// pattern is the pre-compiled regex equivalent of the stored LIKE pattern.
// For exact-match entries (no % in the stored value) pattern is nil and the
// entry is reachable only through aclCache.exact[username][topic].
// entry is reachable only through accessCache.exact[username][topic].
type aclEntry struct {
length int // len() of the original stored topic/pattern
pattern *regexp.Regexp // nil for exact entries
@@ -43,8 +43,8 @@ type aclEntry struct {
write bool
}
func newAccessCache() *aclCache {
return &aclCache{
func newAccessCache() *accessCache {
return &accessCache{
exact: make(map[string]map[string]aclEntry),
pattern: make(map[string][]aclEntry),
}
@@ -54,7 +54,7 @@ func newAccessCache() *aclCache {
// exact and pattern maps under the write lock. The primary is used (not
// ReadOnly) so a reload immediately after an ACL mutation sees the freshly-
// written rows without replica lag.
func (c *aclCache) reload(d *db.DB, query string) error {
func (c *accessCache) reload(d *db.DB, query string) error {
rows, err := d.Query(query)
if err != nil {
return err
@@ -98,7 +98,7 @@ func (c *aclCache) reload(d *db.DB, query string) error {
// 1. specific user beats Everyone
// 2. longer pattern beats shorter (more specific wins)
// 3. write beats read at equal length (write is "stronger")
func (c *aclCache) Lookup(usernameOrEveryone, topic string) (read, write, found bool) {
func (c *accessCache) Lookup(usernameOrEveryone, topic string) (read, write, found bool) {
escapedTopic := escapeUnderscore(topic)
c.mu.RLock()
defer c.mu.RUnlock()
@@ -124,7 +124,7 @@ func (c *aclCache) Lookup(usernameOrEveryone, topic string) (read, write, found
// Exact and wildcard rules are ranked together under the same criteria, so
// an exact "foo" (length 3) beats a wildcard "f%" (length 2), but a wildcard
// "foo%" (length 4) beats an exact "foo" (length 3).
func (c *aclCache) pickBestNoLock(username, topic, escapedTopic string) (*aclEntry, bool) {
func (c *accessCache) pickBestNoLock(username, topic, escapedTopic string) (*aclEntry, bool) {
var best aclEntry
var found bool
if exact, exists := c.exact[username]; exists {
user/access_cache_test.go
+9 -9
View File
@@ -140,8 +140,8 @@ func TestACLCache_SpecificUserBeatsEveryoneEvenWhenShorter(t *testing.T) {
// Everyone with a longer matching rule.
c := newAccessCache()
loadCache(t, c, []rawACLRow{
{user: Everyone, topic: "foo", read: true, write: true}, // exact, length 3
{user: "phil", topic: "f%", read: false, write: false}, // wildcard, length 2, deny-all
{user: Everyone, topic: "foo", read: true, write: true}, // exact, length 3
{user: "phil", topic: "f%", read: false, write: false}, // wildcard, length 2, deny-all
})
read, write, found := c.Lookup("phil", "foo")
require.True(t, found)
@@ -155,8 +155,8 @@ func TestACLCache_SpecificUserBeatsEveryoneRegardlessOfWrite(t *testing.T) {
// stronger, in either direction).
c := newAccessCache()
loadCache(t, c, []rawACLRow{
{user: Everyone, topic: "mytopic", read: true, write: true}, // wide-open
{user: "phil", topic: "mytopic", read: true, write: false}, // read-only for phil
{user: Everyone, topic: "mytopic", read: true, write: true}, // wide-open
{user: "phil", topic: "mytopic", read: true, write: false}, // read-only for phil
})
read, write, found := c.Lookup("phil", "mytopic")
require.True(t, found)
@@ -197,8 +197,8 @@ func TestACLCache_ExactBeatsShorterWildcardSameUser(t *testing.T) {
// shorter wildcard could overwrite a longer exact.
c := newAccessCache()
loadCache(t, c, []rawACLRow{
{user: "phil", topic: "foo", read: true, write: true}, // exact, length 3
{user: "phil", topic: "f%", read: false, write: false}, // wildcard, length 2, deny-all
{user: "phil", topic: "foo", read: true, write: true}, // exact, length 3
{user: "phil", topic: "f%", read: false, write: false}, // wildcard, length 2, deny-all
})
read, write, found := c.Lookup("phil", "foo")
require.True(t, found)
@@ -212,8 +212,8 @@ func TestACLCache_LongerWildcardBeatsExactSameUser(t *testing.T) {
// to wildcard when better() returns true" path.
c := newAccessCache()
loadCache(t, c, []rawACLRow{
{user: "phil", topic: "foo", read: false, write: false}, // exact, length 3, deny-all
{user: "phil", topic: "foo%", read: true, write: true}, // wildcard, length 4
{user: "phil", topic: "foo", read: false, write: false}, // exact, length 3, deny-all
{user: "phil", topic: "foo%", read: true, write: true}, // wildcard, length 4
})
read, write, found := c.Lookup("phil", "foo")
require.True(t, found)
@@ -281,7 +281,7 @@ type rawACLRow struct {
// loadCache writes the given rows into the cache under its write lock,
// preserving the same exact/wildcard partitioning that reload would produce.
func loadCache(t *testing.T, c *aclCache, rows []rawACLRow) {
func loadCache(t *testing.T, c *accessCache, rows []rawACLRow) {
t.Helper()
exact := make(map[string]map[string]aclEntry)
wildcards := make(map[string][]aclEntry)
user/manager.go
+1 -1
View File
@@ -58,7 +58,7 @@ type Manager struct {
queries queries
statsQueue map[string]*Stats // "Queue" to asynchronously write user stats to the database (UserID -> Stats)
tokenQueue map[string]*TokenUpdate // "Queue" to asynchronously write token access stats to the database (Token ID -> TokenUpdate)
accessCache *aclCache // In-memory snapshot of user_access; rebuilt after every ACL mutation
accessCache *accessCache // In-memory snapshot of user_access; rebuilt after every ACL mutation
quit chan struct{} // Closed by Close() to signal background goroutines to stop
mu sync.Mutex
}