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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,115 @@ | ||
| package bchain | ||
|
|
||
| import ( | ||
| "sort" | ||
| "sync" | ||
| ) | ||
|
|
||
| type addrIndex struct { | ||
| addrDesc string | ||
| n int32 | ||
| } | ||
|
|
||
| type txEntry struct { | ||
| addrIndexes []addrIndex | ||
| time uint32 | ||
| } | ||
|
|
||
| type txidio struct { | ||
| txid string | ||
| io []addrIndex | ||
| } | ||
|
|
||
| // BaseMempool is mempool base handle | ||
| type BaseMempool struct { | ||
| chain BlockChain | ||
| mux sync.Mutex | ||
| txEntries map[string]txEntry | ||
| addrDescToTx map[string][]Outpoint | ||
| OnNewTxAddr OnNewTxAddrFunc | ||
| } | ||
|
|
||
| // GetTransactions returns slice of mempool transactions for given address | ||
| func (m *BaseMempool) GetTransactions(address string) ([]Outpoint, error) { | ||
| parser := m.chain.GetChainParser() | ||
| addrDesc, err := parser.GetAddrDescFromAddress(address) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| return m.GetAddrDescTransactions(addrDesc) | ||
| } | ||
|
|
||
| // GetAddrDescTransactions returns slice of mempool transactions for given address descriptor, in reverse order | ||
| func (m *BaseMempool) GetAddrDescTransactions(addrDesc AddressDescriptor) ([]Outpoint, error) { | ||
| m.mux.Lock() | ||
| defer m.mux.Unlock() | ||
| outpoints := m.addrDescToTx[string(addrDesc)] | ||
| rv := make([]Outpoint, len(outpoints)) | ||
| for i, j := len(outpoints)-1, 0; i >= 0; i-- { | ||
| rv[j] = outpoints[i] | ||
| j++ | ||
| } | ||
| return rv, nil | ||
| } | ||
|
|
||
| func (a MempoolTxidEntries) Len() int { return len(a) } | ||
| func (a MempoolTxidEntries) Swap(i, j int) { a[i], a[j] = a[j], a[i] } | ||
| func (a MempoolTxidEntries) Less(i, j int) bool { | ||
| // if the Time is equal, sort by txid to make the order defined | ||
| hi := a[i].Time | ||
| hj := a[j].Time | ||
| if hi == hj { | ||
| return a[i].Txid > a[j].Txid | ||
| } | ||
| // order in reverse | ||
| return hi > hj | ||
| } | ||
|
|
||
| // removeEntryFromMempool removes entry from mempool structs. The caller is responsible for locking! | ||
| func (m *BaseMempool) removeEntryFromMempool(txid string, entry txEntry) { | ||
| delete(m.txEntries, txid) | ||
| for _, si := range entry.addrIndexes { | ||
| outpoints, found := m.addrDescToTx[si.addrDesc] | ||
| if found { | ||
| newOutpoints := make([]Outpoint, 0, len(outpoints)-1) | ||
| for _, o := range outpoints { | ||
| if o.Txid != txid { | ||
| newOutpoints = append(newOutpoints, o) | ||
| } | ||
| } | ||
| if len(newOutpoints) > 0 { | ||
| m.addrDescToTx[si.addrDesc] = newOutpoints | ||
| } else { | ||
| delete(m.addrDescToTx, si.addrDesc) | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
|
||
| // GetAllEntries returns all mempool entries sorted by fist seen time in descending order | ||
| func (m *BaseMempool) GetAllEntries() MempoolTxidEntries { | ||
| i := 0 | ||
| m.mux.Lock() | ||
| entries := make(MempoolTxidEntries, len(m.txEntries)) | ||
| for txid, entry := range m.txEntries { | ||
| entries[i] = MempoolTxidEntry{ | ||
| Txid: txid, | ||
| Time: entry.time, | ||
| } | ||
| i++ | ||
| } | ||
| m.mux.Unlock() | ||
| sort.Sort(entries) | ||
| return entries | ||
| } | ||
|
|
||
| // GetTransactionTime returns first seen time of a transaction | ||
| func (m *BaseMempool) GetTransactionTime(txid string) uint32 { | ||
| m.mux.Lock() | ||
| e, found := m.txEntries[txid] | ||
| m.mux.Unlock() | ||
| if !found { | ||
| return 0 | ||
| } | ||
| return e.time | ||
| } |
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