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chore: rewrite bbolt cachefile implements
never use returned byte slices outside the transaction, ref: https://pkg.go.dev/go.etcd.io/bbolt#hdr-Caveats
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,45 @@ | ||
| package utils | ||
|
|
||
| import ( | ||
| "crypto/md5" | ||
| "encoding/hex" | ||
| ) | ||
|
|
||
| // HashType warps hash array inside struct | ||
| // someday can change to other hash algorithm simply | ||
| type HashType struct { | ||
| md5 [md5.Size]byte // MD5 | ||
| } | ||
|
|
||
| func MakeHash(data []byte) HashType { | ||
| return HashType{md5.Sum(data)} | ||
| } | ||
|
|
||
| func MakeHashFromBytes(hashBytes []byte) (h HashType) { | ||
| if len(hashBytes) != md5.Size { | ||
| return | ||
| } | ||
| copy(h.md5[:], hashBytes) | ||
| return | ||
| } | ||
|
|
||
| func (h HashType) Equal(hash HashType) bool { | ||
| return h.md5 == hash.md5 | ||
| } | ||
|
|
||
| func (h HashType) Bytes() []byte { | ||
| return h.md5[:] | ||
| } | ||
|
|
||
| func (h HashType) String() string { | ||
| return hex.EncodeToString(h.Bytes()) | ||
| } | ||
|
|
||
| func (h HashType) Len() int { | ||
| return len(h.md5) | ||
| } | ||
|
|
||
| func (h HashType) IsValid() bool { | ||
| var zero HashType | ||
| return h != zero | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,115 @@ | ||
| package cachefile | ||
|
|
||
| import ( | ||
| "net/netip" | ||
|
|
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| "github.com/metacubex/mihomo/log" | ||
|
|
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| "github.com/metacubex/bbolt" | ||
| ) | ||
|
|
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| type FakeIpStore struct { | ||
| *CacheFile | ||
| } | ||
|
|
||
| func (c *CacheFile) FakeIpStore() *FakeIpStore { | ||
| return &FakeIpStore{c} | ||
| } | ||
|
|
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| func (c *FakeIpStore) GetByHost(host string) (ip netip.Addr, exist bool) { | ||
| if c.DB == nil { | ||
| return | ||
| } | ||
| c.DB.View(func(t *bbolt.Tx) error { | ||
| if bucket := t.Bucket(bucketFakeip); bucket != nil { | ||
| if v := bucket.Get([]byte(host)); v != nil { | ||
| ip, exist = netip.AddrFromSlice(v) | ||
| } | ||
| } | ||
| return nil | ||
| }) | ||
| return | ||
| } | ||
|
|
||
| func (c *FakeIpStore) PutByHost(host string, ip netip.Addr) { | ||
| if c.DB == nil { | ||
| return | ||
| } | ||
| err := c.DB.Batch(func(t *bbolt.Tx) error { | ||
| bucket, err := t.CreateBucketIfNotExists(bucketFakeip) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| return bucket.Put([]byte(host), ip.AsSlice()) | ||
| }) | ||
| if err != nil { | ||
| log.Warnln("[CacheFile] write cache to %s failed: %s", c.DB.Path(), err.Error()) | ||
| } | ||
| } | ||
|
|
||
| func (c *FakeIpStore) GetByIP(ip netip.Addr) (host string, exist bool) { | ||
| if c.DB == nil { | ||
| return | ||
| } | ||
| c.DB.View(func(t *bbolt.Tx) error { | ||
| if bucket := t.Bucket(bucketFakeip); bucket != nil { | ||
| if v := bucket.Get(ip.AsSlice()); v != nil { | ||
| host, exist = string(v), true | ||
| } | ||
| } | ||
| return nil | ||
| }) | ||
| return | ||
| } | ||
|
|
||
| func (c *FakeIpStore) PutByIP(ip netip.Addr, host string) { | ||
| if c.DB == nil { | ||
| return | ||
| } | ||
| err := c.DB.Batch(func(t *bbolt.Tx) error { | ||
| bucket, err := t.CreateBucketIfNotExists(bucketFakeip) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| return bucket.Put(ip.AsSlice(), []byte(host)) | ||
| }) | ||
| if err != nil { | ||
| log.Warnln("[CacheFile] write cache to %s failed: %s", c.DB.Path(), err.Error()) | ||
| } | ||
| } | ||
|
|
||
| func (c *FakeIpStore) DelByIP(ip netip.Addr) { | ||
| if c.DB == nil { | ||
| return | ||
| } | ||
|
|
||
| addr := ip.AsSlice() | ||
| err := c.DB.Batch(func(t *bbolt.Tx) error { | ||
| bucket, err := t.CreateBucketIfNotExists(bucketFakeip) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| host := bucket.Get(addr) | ||
| err = bucket.Delete(addr) | ||
| if len(host) > 0 { | ||
| if err = bucket.Delete(host); err != nil { | ||
| return err | ||
| } | ||
| } | ||
| return err | ||
| }) | ||
| if err != nil { | ||
| log.Warnln("[CacheFile] write cache to %s failed: %s", c.DB.Path(), err.Error()) | ||
| } | ||
| } | ||
|
|
||
| func (c *FakeIpStore) FlushFakeIP() error { | ||
| err := c.DB.Batch(func(t *bbolt.Tx) error { | ||
| bucket := t.Bucket(bucketFakeip) | ||
| if bucket == nil { | ||
| return nil | ||
| } | ||
| return t.DeleteBucket(bucketFakeip) | ||
| }) | ||
| return err | ||
| } |
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