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[chore] bump go-cache to v3.1.7 to fix possible issues with zero value keys (#1038)

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Signed-off-by: kim <grufwub@gmail.com>

Signed-off-by: kim <grufwub@gmail.com>
This commit is contained in:
kim 2022-11-13 13:02:07 +00:00 • committed by GitHub
commit e8c733da3f
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6 changed files with 149 additions and 118 deletions
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2
go.mod
View file

@ -6,7 +6,7 @@ require (
codeberg.org/gruf/go-bytesize v1.0.0
codeberg.org/gruf/go-byteutil v1.0.2
codeberg.org/gruf/go-cache/v2 v2.1.4
codeberg.org/gruf/go-cache/v3 v3.1.6
codeberg.org/gruf/go-cache/v3 v3.1.7
codeberg.org/gruf/go-debug v1.2.0
codeberg.org/gruf/go-errors/v2 v2.0.2
codeberg.org/gruf/go-kv v1.5.2

4
go.sum
View file

@ -71,8 +71,8 @@ codeberg.org/gruf/go-byteutil v1.0.2 h1:OesVyK5VKWeWdeDR00zRJ+Oy8hjXx1pBhn7WVvcZ
codeberg.org/gruf/go-byteutil v1.0.2/go.mod h1:cWM3tgMCroSzqoBXUXMhvxTxYJp+TbCr6ioISRY5vSU=
codeberg.org/gruf/go-cache/v2 v2.1.4 h1:r+6wJiTHZn0qqf+p1VtAjGOgXXJl7s8txhPIwoSMZtI=
codeberg.org/gruf/go-cache/v2 v2.1.4/go.mod h1:j7teiz814lG0PfSfnUs+6HA+2/jcjTAR71Ou3Wbt2Xk=
codeberg.org/gruf/go-cache/v3 v3.1.6 h1:LMpQoLRoGTH64WyLCew6wMVqC3Vzve09MCYbt5c0WR4=
codeberg.org/gruf/go-cache/v3 v3.1.6/go.mod h1:h6im2UVGdrGtNt4IVKARVeoW4kAdok5ts7CbH15UWXs=
codeberg.org/gruf/go-cache/v3 v3.1.7 h1:mWeLxh4CnIfBIbzxdCPlPsRjrernqIlFsMQdLQhUBMo=
codeberg.org/gruf/go-cache/v3 v3.1.7/go.mod h1:h6im2UVGdrGtNt4IVKARVeoW4kAdok5ts7CbH15UWXs=
codeberg.org/gruf/go-debug v1.2.0 h1:WBbTMnK1ArFKUmgv04aO2JiC/daTOB8zQGi521qb7OU=
codeberg.org/gruf/go-debug v1.2.0/go.mod h1:N+vSy9uJBQgpQcJUqjctvqFz7tBHJf+S/PIjLILzpLg=
codeberg.org/gruf/go-errors/v2 v2.0.0/go.mod h1:ZRhbdhvgoUA3Yw6e56kd9Ox984RrvbEFC2pOXyHDJP4=

6
internal/db/bundb/tombstone.go
View file

@ -36,9 +36,9 @@ type tombstoneDB struct {
func (t *tombstoneDB) init() {
// Initialize tombstone result cache
t.cache = result.NewSized([]string{
"ID",
"URI",
t.cache = result.NewSized([]result.Lookup{
{Name: "ID"},
{Name: "URI"},
}, func(t1 *gtsmodel.Tombstone) *gtsmodel.Tombstone {
t2 := new(gtsmodel.Tombstone)
*t2 = *t1

105
vendor/codeberg.org/gruf/go-cache/v3/result/cache.go generated vendored
View file

@ -7,7 +7,20 @@ import (
"codeberg.org/gruf/go-cache/v3/ttl"
)
// Cache ...
// Lookup represents a struct object lookup method in the cache.
type Lookup struct {
// Name is a period ('.') separated string
// of struct fields this Key encompasses.
Name string
// AllowZero indicates whether to accept and cache
// under zero value keys, otherwise ignore them.
AllowZero bool
}
// Cache provides a means of caching value structures, along with
// the results of attempting to load them. An example usecase of this
// cache would be in wrapping a database, allowing caching of sql.ErrNoRows.
type Cache[Value any] struct {
cache ttl.Cache[int64, result[Value]] // underlying result cache
lookups structKeys // pre-determined struct lookups
@ -16,12 +29,12 @@ type Cache[Value any] struct {
}
// New returns a new initialized Cache, with given lookups and underlying value copy function.
func New[Value any](lookups []string, copy func(Value) Value) *Cache[Value] {
func New[Value any](lookups []Lookup, copy func(Value) Value) *Cache[Value] {
return NewSized(lookups, copy, 64)
}
// NewSized returns a new initialized Cache, with given lookups, underlying value copy function and provided capacity.
func NewSized[Value any](lookups []string, copy func(Value) Value, cap int) *Cache[Value] {
func NewSized[Value any](lookups []Lookup, copy func(Value) Value, cap int) *Cache[Value] {
var z Value
// Determine generic type
@ -39,13 +52,11 @@ func NewSized[Value any](lookups []string, copy func(Value) Value, cap int) *Cac
// Allocate new cache object
c := &Cache[Value]{copy: copy}
c.lookups = make([]keyFields, len(lookups))
c.lookups = make([]structKey, len(lookups))
for i, lookup := range lookups {
// Generate keyed field info for lookup
c.lookups[i].pkeys = make(map[string]int64, cap)
c.lookups[i].lookup = lookup
c.lookups[i].populate(t)
c.lookups[i] = genStructKey(lookup, t)
}
// Create and initialize underlying cache
@ -82,7 +93,7 @@ func (c *Cache[Value]) SetEvictionCallback(hook func(Value)) {
c.cache.SetEvictionCallback(func(item *ttl.Entry[int64, result[Value]]) {
for _, key := range item.Value.Keys {
// Delete key->pkey lookup
pkeys := key.fields.pkeys
pkeys := key.key.pkeys
delete(pkeys, key.value)
}
@ -104,11 +115,9 @@ func (c *Cache[Value]) SetInvalidateCallback(hook func(Value)) {
}
c.cache.SetInvalidateCallback(func(item *ttl.Entry[int64, result[Value]]) {
for _, key := range item.Value.Keys {
if key.fields != nil {
// Delete key->pkey lookup
pkeys := key.fields.pkeys
delete(pkeys, key.value)
}
// Delete key->pkey lookup
pkeys := key.key.pkeys
delete(pkeys, key.value)
}
if item.Value.Error != nil {
@ -121,25 +130,24 @@ func (c *Cache[Value]) SetInvalidateCallback(hook func(Value)) {
})
}
// Load ...
// Load will attempt to load an existing result from the cacche for the given lookup and key parts, else calling the load function and caching that result.
func (c *Cache[Value]) Load(lookup string, load func() (Value, error), keyParts ...any) (Value, error) {
var (
zero Value
res result[Value]
)
// Get lookup map by name.
kfields := c.getFields(lookup)
lmap := kfields.pkeys
// Get lookup key info by name.
keyInfo := c.lookups.get(lookup)
// Generate cache key string.
ckey := genkey(keyParts...)
ckey := genKey(keyParts...)
// Acquire cache lock
c.cache.Lock()
// Look for primary key
pkey, ok := lmap[ckey]
// Look for primary key for cache key
pkey, ok := keyInfo.pkeys[ckey]
if ok {
// Fetch the result for primary key
@ -157,9 +165,9 @@ func (c *Cache[Value]) Load(lookup string, load func() (Value, error), keyParts
if res.Error != nil {
// This load returned an error, only
// store this item under provided key.
res.Keys = []cacheKey{{
value: ckey,
fields: kfields,
res.Keys = []cachedKey{{
key: keyInfo,
value: ckey,
}}
} else {
// This was a successful load, generate keys.
@ -185,7 +193,7 @@ func (c *Cache[Value]) Load(lookup string, load func() (Value, error), keyParts
return c.copy(res.Value), nil
}
// Store ...
// Store will call the given store function, and on success store the value in the cache as a positive result.
func (c *Cache[Value]) Store(value Value, store func() error) error {
// Attempt to store this value.
if err := store(); err != nil {
@ -212,22 +220,21 @@ func (c *Cache[Value]) Store(value Value, store func() error) error {
return nil
}
// Has ...
// Has checks the cache for a positive result under the given lookup and key parts.
func (c *Cache[Value]) Has(lookup string, keyParts ...any) bool {
var res result[Value]
// Get lookup map by name.
kfields := c.getFields(lookup)
lmap := kfields.pkeys
// Get lookup key type by name.
keyType := c.lookups.get(lookup)
// Generate cache key string.
ckey := genkey(keyParts...)
ckey := genKey(keyParts...)
// Acquire cache lock
c.cache.Lock()
// Look for primary key
pkey, ok := lmap[ckey]
// Look for primary key for cache key
pkey, ok := keyType.pkeys[ckey]
if ok {
// Fetch the result for primary key
@ -242,18 +249,17 @@ func (c *Cache[Value]) Has(lookup string, keyParts ...any) bool {
return ok && (res.Error == nil)
}
// Invalidate ...
// Invalidate will invalidate any result from the cache found under given lookup and key parts.
func (c *Cache[Value]) Invalidate(lookup string, keyParts ...any) {
// Get lookup map by name.
kfields := c.getFields(lookup)
lmap := kfields.pkeys
// Get lookup key type by name.
keyType := c.lookups.get(lookup)
// Generate cache key string.
ckey := genkey(keyParts...)
ckey := genKey(keyParts...)
// Look for primary key
// Look for primary key for cache key
c.cache.Lock()
pkey, ok := lmap[ckey]
pkey, ok := keyType.pkeys[ckey]
c.cache.Unlock()
if !ok {
@ -269,29 +275,19 @@ func (c *Cache[Value]) Clear() {
c.cache.Clear()
}
// Len ...
// Len returns the current length of the cache.
func (c *Cache[Value]) Len() int {
return c.cache.Cache.Len()
}
// Cap ...
// Cap returns the maximum capacity of this result cache.
func (c *Cache[Value]) Cap() int {
return c.cache.Cache.Cap()
}
func (c *Cache[Value]) getFields(name string) *keyFields {
for _, k := range c.lookups {
// Find key fields with name
if k.lookup == name {
return &k
}
}
panic("invalid lookup: " + name)
}
func (c *Cache[Value]) storeResult(res result[Value]) (string, bool) {
for _, key := range res.Keys {
pkeys := key.fields.pkeys
pkeys := key.key.pkeys
// Look for cache primary key
pkey, ok := pkeys[key.value]
@ -304,6 +300,9 @@ func (c *Cache[Value]) storeResult(res result[Value]) (string, bool) {
if entry.Value.Error == nil {
return key.value, false
}
// Delete existing error result
c.cache.Cache.Delete(pkey)
}
}
@ -313,7 +312,7 @@ func (c *Cache[Value]) storeResult(res result[Value]) (string, bool) {
// Store all primary key lookups
for _, key := range res.Keys {
pkeys := key.fields.pkeys
pkeys := key.key.pkeys
pkeys[key.value] = pkey
}
@ -331,7 +330,7 @@ func (c *Cache[Value]) storeResult(res result[Value]) (string, bool) {
type result[Value any] struct {
// keys accessible under
Keys []cacheKey
Keys []cachedKey
// cached value
Value Value

148
vendor/codeberg.org/gruf/go-cache/v3/result/key.go generated vendored
View file

@ -12,22 +12,24 @@ import (
)
// structKeys provides convience methods for a list
// of struct field combinations used for cache keys.
type structKeys []keyFields
// of structKey field combinations used for cache keys.
type structKeys []structKey
// get fetches the key-fields for given lookup (else, panics).
func (sk structKeys) get(lookup string) *keyFields {
// get fetches the structKey info for given lookup name (else, panics).
func (sk structKeys) get(name string) *structKey {
for i := range sk {
if sk[i].lookup == lookup {
if sk[i].name == name {
return &sk[i]
}
}
panic("unknown lookup: \"" + lookup + "\"")
panic("unknown lookup: \"" + name + "\"")
}
// generate will calculate the value string for each required
// cache key as laid-out by the receiving structKeys{}.
func (sk structKeys) generate(a any) []cacheKey {
// generate will calculate and produce a slice of cache keys the given value
// can be stored under in the, as determined by receiving struct keys.
func (sk structKeys) generate(a any) []cachedKey {
var keys []cachedKey
// Get reflected value in order
// to access the struct fields
v := reflect.ValueOf(a)
@ -40,9 +42,6 @@ func (sk structKeys) generate(a any) []cacheKey {
v = v.Elem()
}
// Preallocate expected slice of keys
keys := make([]cacheKey, len(sk))
// Acquire byte buffer
buf := bufpool.Get().(*byteutil.Buffer)
defer bufpool.Put(buf)
@ -51,54 +50,63 @@ func (sk structKeys) generate(a any) []cacheKey {
// Reset buffer
buf.B = buf.B[:0]
// Set the key-fields reference
keys[i].fields = &sk[i]
// Append each field value to buffer.
for _, idx := range sk[i].fields {
fv := v.Field(idx)
fi := fv.Interface()
buf.B = mangler.Append(buf.B, fi)
buf.B = append(buf.B, '.')
}
// Calculate cache-key value
keys[i].populate(buf, v)
// Drop last '.'
buf.Truncate(1)
// Don't generate keys for zero values
if allowZero := sk[i].zero == ""; // nocollapse
!allowZero && buf.String() == sk[i].zero {
continue
}
// Append new cached key to slice
keys = append(keys, cachedKey{
key: &sk[i],
value: string(buf.B), // copy
})
}
return keys
}
// cacheKey represents an actual cache key.
type cacheKey struct {
// cachedKey represents an actual cached key.
type cachedKey struct {
// key is a reference to the structKey this
// cacheKey is representing. This is a shared
// reference and as such only the structKey.pkeys
// lookup map is expecting to be modified.
key *structKey
// value is the actual string representing
// this cache key for hashmap lookups.
value string
// fieldsRO is a read-only slice (i.e. we should
// NOT be modifying them, only using for reference)
// of struct fields encapsulated by this cache key.
fields *keyFields
}
// populate will calculate the cache key's value string for given
// value's reflected information. Passed encoder is for string building.
func (k *cacheKey) populate(buf *byteutil.Buffer, v reflect.Value) {
// Append each field value to buffer.
for _, idx := range k.fields.fields {
fv := v.Field(idx)
fi := fv.Interface()
buf.B = mangler.Append(buf.B, fi)
buf.B = append(buf.B, '.')
}
// structKey represents a list of struct fields
// encompassing a single cache key, the string name
// of the lookup, the lookup map to primary cache
// keys, and the key's possible zero value string.
type structKey struct {
// name is the provided cache lookup name for
// this particular struct key, consisting of
// period ('.') separated struct field names.
name string
// Drop last '.'
buf.Truncate(1)
// Create string copy from buf
k.value = string(buf.B)
}
// keyFields represents a list of struct fields
// encompassed in a single cache key, the string name
// of the lookup, and the lookup map to primary keys.
type keyFields struct {
// lookup is the calculated (well, provided)
// cache key lookup, consisting of dot sep'd
// struct field names.
lookup string
// zero is the possible zero value for this key.
// if set, this will _always_ be non-empty, as
// the mangled cache key will never be empty.
//
// i.e. zero = "" --> allow zero value keys
// zero != "" --> don't allow zero value keys
zero string
// fields is a slice of runtime struct field
// indices, of the fields encompassed by this key.
@ -109,19 +117,20 @@ type keyFields struct {
pkeys map[string]int64
}
// populate will populate this keyFields{} object's .fields member by determining
// the field names from the given lookup, and querying given reflected type to get
// the runtime field indices for each of the fields. this speeds-up future value lookups.
func (kf *keyFields) populate(t reflect.Type) {
// genStructKey will generate a structKey{} information object for user-given lookup
// key information, and the receiving generic paramter's type information. Panics on error.
func genStructKey(lk Lookup, t reflect.Type) structKey {
var zeros []any
// Split dot-separated lookup to get
// the individual struct field names
names := strings.Split(kf.lookup, ".")
names := strings.Split(lk.Name, ".")
if len(names) == 0 {
panic("no key fields specified")
}
// Pre-allocate slice of expected length
kf.fields = make([]int, len(names))
fields := make([]int, len(names))
for i, name := range names {
// Get field info for given name
@ -136,13 +145,36 @@ func (kf *keyFields) populate(t reflect.Type) {
}
// Set the runtime field index
kf.fields[i] = ft.Index[0]
fields[i] = ft.Index[0]
// Allocate new instance of field
v := reflect.New(ft.Type)
v = v.Elem()
if !lk.AllowZero {
// Append the zero value interface
zeros = append(zeros, v.Interface())
}
}
var zvalue string
if len(zeros) > 0 {
// Generate zero value string
zvalue = genKey(zeros...)
}
return structKey{
name: lk.Name,
zero: zvalue,
fields: fields,
pkeys: make(map[string]int64),
}
}
// genkey generates a cache key for given key values.
func genkey(parts ...any) string {
if len(parts) < 1 {
// genKey generates a cache key for given key values.
func genKey(parts ...any) string {
if len(parts) == 0 {
// Panic to prevent annoying usecase
// where user forgets to pass lookup
// and instead only passes a key part,

2
vendor/modules.txt vendored
View file

@ -16,7 +16,7 @@ codeberg.org/gruf/go-byteutil
# codeberg.org/gruf/go-cache/v2 v2.1.4
## explicit; go 1.19
codeberg.org/gruf/go-cache/v2
# codeberg.org/gruf/go-cache/v3 v3.1.6
# codeberg.org/gruf/go-cache/v3 v3.1.7
## explicit; go 1.19
codeberg.org/gruf/go-cache/v3/result
codeberg.org/gruf/go-cache/v3/ttl