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core, core/vm, eth/filters: move Removed field into vm.Log

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This field used to be assigned by the filter system and returned through
the RPC API. Now that we have a Go client that uses the underlying type,
the field needs to move. It is now assigned to true when the RemovedLogs
event is generated so the filter system doesn't need to care about the
field at all.

While here, remove the log list from ChainSideEvent. There are no users
of this field right now and any potential users could subscribe to
RemovedLogsEvent instead.
This commit is contained in:
Felix Lange
2016-12-04 19:07:24 +01:00
parent 3bc0fe1ee3
commit f52a1ae849
8 changed files with 252 additions and 165 deletions
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27
eth/filters/filter.go
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@ -25,6 +25,7 @@ import (
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/core/vm"
"github.com/ethereum/go-ethereum/ethdb"
"github.com/ethereum/go-ethereum/event"
"github.com/ethereum/go-ethereum/rpc"
@ -38,7 +39,7 @@ type Backend interface {
GetReceipts(ctx context.Context, blockHash common.Hash) (types.Receipts, error)
}
// Filter can be used to retrieve and filter logs
// Filter can be used to retrieve and filter logs.
type Filter struct {
backend Backend
useMipMap bool
@ -85,7 +86,7 @@ func (f *Filter) SetTopics(topics [][]common.Hash) {
}
// Run filters logs with the current parameters set
func (f *Filter) Find(ctx context.Context) ([]Log, error) {
func (f *Filter) Find(ctx context.Context) ([]*vm.Log, error) {
head, _ := f.backend.HeaderByNumber(ctx, rpc.LatestBlockNumber)
if head == nil {
return nil, nil
@ -110,7 +111,7 @@ func (f *Filter) Find(ctx context.Context) ([]Log, error) {
return f.mipFind(beginBlockNo, endBlockNo, 0), nil
}
func (f *Filter) mipFind(start, end uint64, depth int) (logs []Log) {
func (f *Filter) mipFind(start, end uint64, depth int) (logs []*vm.Log) {
level := core.MIPMapLevels[depth]
// normalise numerator so we can work in level specific batches and
// work with the proper range checks
@ -141,7 +142,7 @@ func (f *Filter) mipFind(start, end uint64, depth int) (logs []Log) {
return logs
}
func (f *Filter) getLogs(ctx context.Context, start, end uint64) (logs []Log, err error) {
func (f *Filter) getLogs(ctx context.Context, start, end uint64) (logs []*vm.Log, err error) {
for i := start; i <= end; i++ {
header, err := f.backend.HeaderByNumber(ctx, rpc.BlockNumber(i))
if header == nil || err != nil {
@ -156,13 +157,9 @@ func (f *Filter) getLogs(ctx context.Context, start, end uint64) (logs []Log, er
if err != nil {
return nil, err
}
var unfiltered []Log
var unfiltered []*vm.Log
for _, receipt := range receipts {
rl := make([]Log, len(receipt.Logs))
for i, l := range receipt.Logs {
rl[i] = Log{l, false}
}
unfiltered = append(unfiltered, rl...)
unfiltered = append(unfiltered, ([]*vm.Log)(receipt.Logs)...)
}
logs = append(logs, filterLogs(unfiltered, nil, nil, f.addresses, f.topics)...)
}
@ -181,15 +178,15 @@ func includes(addresses []common.Address, a common.Address) bool {
return false
}
func filterLogs(logs []Log, fromBlock, toBlock *big.Int, addresses []common.Address, topics [][]common.Hash) []Log {
var ret []Log
// Filter the logs for interesting stuff
// filterLogs creates a slice of logs matching the given criteria.
func filterLogs(logs []*vm.Log, fromBlock, toBlock *big.Int, addresses []common.Address, topics [][]common.Hash) []*vm.Log {
var ret []*vm.Log
Logs:
for _, log := range logs {
if fromBlock != nil && fromBlock.Int64() >= 0 && uint64(fromBlock.Int64()) > log.BlockNumber {
if fromBlock != nil && fromBlock.Int64() >= 0 && fromBlock.Uint64() > log.BlockNumber {
continue
}
if toBlock != nil && toBlock.Int64() >= 0 && uint64(toBlock.Int64()) < log.BlockNumber {
if toBlock != nil && toBlock.Int64() >= 0 && toBlock.Uint64() < log.BlockNumber {
continue
}