logpoller

package
v0.0.0-...-3674750 Latest Latest
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 Go to latest Published: Feb 19, 2024 License: MIT Imports: 30 Imported by: 0

Documentation

Overview

Package logpoller is a service for querying EVM log data.

It can be thought of as a more performant and sophisticated version of eth_getLogs https://ethereum.org/en/developers/docs/apis/json-rpc/#eth_getlogs. Having a local table of relevant, continually canonical logs allows us to 2 main advantages:

  • Have hundreds of jobs/clients querying for logs without overloading the underlying RPC provider.
  • Do more sophisticated querying (filter by confirmations/time/log contents, efficiently join between the logs table and other tables on the node, etc.)

Guarantees provided by the poller:

  • Queries always return the logs from the _current_ canonical chain (same as eth_getLogs). In particular that means that querying unfinalized logs may change between queries but finalized logs remain stable. The threshold between unfinalized and finalized logs is the finalityDepth parameter, chosen such that with exceedingly high probability logs finalityDepth deep cannot be reorged.
  • After calling RegisterFilter with a particular event, it will never miss logs for that event despite node crashes and reorgs. The granularity of the filter is always at least one block (more when backfilling).
  • Old logs stored in the db will only be deleted if all filters matching them have explicit retention periods set, and all of them have expired. Default retention of 0 on any matching filter guarantees permanent retention.
  • After calling Replay(fromBlock), all blocks including that one to the latest chain tip will be polled with the current filter. This can be used on first time job add to specify a start block from which you wish to capture existing logs.

Index

Constants

View Source 
const (
	Finalized   = Confirmations(-1)
	Unconfirmed = Confirmations(0)
)

Variables

View Source 
var (
	ErrReplayRequestAborted = errors.New("aborted, replay request cancelled")
	ErrReplayInProgress     = errors.New("replay request cancelled, but replay is already in progress")
	ErrLogPollerShutdown    = errors.New("replay aborted due to log poller shutdown")
)

Functions

func EvmWord 

func EvmWord(i uint64) common.Hash

func FilterName 

func FilterName(id string, args ...any) string

FilterName is a suggested convenience function for clients to construct unique filter names to populate Name field of struct Filter

func NewLogPoller 

func NewLogPoller(orm ORM, ec Client, lggr logger.Logger, pollPeriod time.Duration,
	useFinalityTag bool, finalityDepth int64, backfillBatchSize int64, rpcBatchSize int64, keepFinalizedBlocksDepth int64) *logPoller

NewLogPoller creates a log poller. Note there is an assumption that blocks can be processed faster than they are produced for the given chain, or the poller will fall behind. Block processing involves the following calls in steady state (without reorgs):

  • eth_getBlockByNumber - headers only (transaction hashes, not full transaction objects),
  • eth_getLogs - get the logs for the block
  • 1 db read latest block - for checking reorgs
  • 1 db tx including block write and logs write to logs.

How fast that can be done depends largely on network speed and DB, but even for the fastest support chain, polygon, which has 2s block times, we need RPCs roughly with <= 500ms latency

Types

type Client 

type Client interface {
	HeadByNumber(ctx context.Context, n *big.Int) (*evmtypes.Head, error)
	HeadByHash(ctx context.Context, n common.Hash) (*evmtypes.Head, error)
	BatchCallContext(ctx context.Context, b []rpc.BatchElem) error
	FilterLogs(ctx context.Context, q ethereum.FilterQuery) ([]types.Log, error)
	ConfiguredChainID() *big.Int
}

type Confirmations 

type Confirmations int

type DbORM 

type DbORM struct {
	// contains filtered or unexported fields
}

func NewORM 

func NewORM(chainID *big.Int, db *sqlx.DB, lggr logger.Logger, cfg pg.QConfig) *DbORM

NewORM creates a DbORM scoped to chainID.

func (*DbORM) DeleteBlocksBefore 

func (o *DbORM) DeleteBlocksBefore(end int64, qopts ...pg.QOpt) error

DeleteBlocksBefore delete all blocks before and including end.

func (*DbORM) DeleteExpiredLogs 

func (o *DbORM) DeleteExpiredLogs(qopts ...pg.QOpt) error

func (*DbORM) DeleteFilter 

func (o *DbORM) DeleteFilter(name string, qopts ...pg.QOpt) error

DeleteFilter removes all events,address pairs associated with the Filter

func (*DbORM) DeleteLogsAndBlocksAfter 

func (o *DbORM) DeleteLogsAndBlocksAfter(start int64, qopts ...pg.QOpt) error

func (*DbORM) GetBlocksRange 

func (o *DbORM) GetBlocksRange(start int64, end int64, qopts ...pg.QOpt) ([]LogPollerBlock, error)

func (*DbORM) InsertBlock 

func (o *DbORM) InsertBlock(blockHash common.Hash, blockNumber int64, blockTimestamp time.Time, finalizedBlock int64, qopts ...pg.QOpt) error

InsertBlock is idempotent to support replays.

func (*DbORM) InsertFilter 

func (o *DbORM) InsertFilter(filter Filter, qopts ...pg.QOpt) (err error)

InsertFilter is idempotent.

Each address/event pair must have a unique job id, so it may be removed when the job is deleted. If a second job tries to overwrite the same pair, this should fail.

func (*DbORM) InsertLogs 

func (o *DbORM) InsertLogs(logs []Log, qopts ...pg.QOpt) error

InsertLogs is idempotent to support replays.

func (*DbORM) InsertLogsWithBlock 

func (o *DbORM) InsertLogsWithBlock(logs []Log, block LogPollerBlock, qopts ...pg.QOpt) error

func (*DbORM) LoadFilters 

func (o *DbORM) LoadFilters(qopts ...pg.QOpt) (map[string]Filter, error)

LoadFiltersForChain returns all filters for this chain

func (*DbORM) SelectBlockByHash 

func (o *DbORM) SelectBlockByHash(hash common.Hash, qopts ...pg.QOpt) (*LogPollerBlock, error)

func (*DbORM) SelectBlockByNumber 

func (o *DbORM) SelectBlockByNumber(n int64, qopts ...pg.QOpt) (*LogPollerBlock, error)

func (*DbORM) SelectIndexedLogs 

func (o *DbORM) SelectIndexedLogs(address common.Address, eventSig common.Hash, topicIndex int, topicValues []common.Hash, confs Confirmations, qopts ...pg.QOpt) ([]Log, error)

func (*DbORM) SelectIndexedLogsByBlockRange 

func (o *DbORM) SelectIndexedLogsByBlockRange(start, end int64, address common.Address, eventSig common.Hash, topicIndex int, topicValues []common.Hash, qopts ...pg.QOpt) ([]Log, error)

SelectIndexedLogsByBlockRangeFilter finds the indexed logs in a given block range.

func (*DbORM) SelectIndexedLogsByTxHash 

func (o *DbORM) SelectIndexedLogsByTxHash(address common.Address, eventSig common.Hash, txHash common.Hash, qopts ...pg.QOpt) ([]Log, error)

func (*DbORM) SelectIndexedLogsCreatedAfter 

func (o *DbORM) SelectIndexedLogsCreatedAfter(address common.Address, eventSig common.Hash, topicIndex int, topicValues []common.Hash, after time.Time, confs Confirmations, qopts ...pg.QOpt) ([]Log, error)

func (*DbORM) SelectIndexedLogsTopicGreaterThan 

func (o *DbORM) SelectIndexedLogsTopicGreaterThan(address common.Address, eventSig common.Hash, topicIndex int, topicValueMin common.Hash, confs Confirmations, qopts ...pg.QOpt) ([]Log, error)

func (*DbORM) SelectIndexedLogsTopicRange 

func (o *DbORM) SelectIndexedLogsTopicRange(address common.Address, eventSig common.Hash, topicIndex int, topicValueMin, topicValueMax common.Hash, confs Confirmations, qopts ...pg.QOpt) ([]Log, error)

func (*DbORM) SelectIndexedLogsWithSigsExcluding 

func (o *DbORM) SelectIndexedLogsWithSigsExcluding(sigA, sigB common.Hash, topicIndex int, address common.Address, startBlock, endBlock int64, confs Confirmations, qopts ...pg.QOpt) ([]Log, error)

SelectIndexedLogsWithSigsExcluding query's for logs that have signature A and exclude logs that have a corresponding signature B, matching is done based on the topic index both logs should be inside the block range and have the minimum number of confirmations

func (*DbORM) SelectLatestBlock 

func (o *DbORM) SelectLatestBlock(qopts ...pg.QOpt) (*LogPollerBlock, error)

func (*DbORM) SelectLatestBlockByEventSigsAddrsWithConfs 

func (o *DbORM) SelectLatestBlockByEventSigsAddrsWithConfs(fromBlock int64, eventSigs []common.Hash, addresses []common.Address, confs Confirmations, qopts ...pg.QOpt) (int64, error)

SelectLatestBlockNumberEventSigsAddrsWithConfs finds the latest block number that matches a list of Addresses and list of events. It returns 0 if there is no matching block

func (*DbORM) SelectLatestLogByEventSigWithConfs 

func (o *DbORM) SelectLatestLogByEventSigWithConfs(eventSig common.Hash, address common.Address, confs Confirmations, qopts ...pg.QOpt) (*Log, error)

func (*DbORM) SelectLatestLogEventSigsAddrsWithConfs 

func (o *DbORM) SelectLatestLogEventSigsAddrsWithConfs(fromBlock int64, addresses []common.Address, eventSigs []common.Hash, confs Confirmations, qopts ...pg.QOpt) ([]Log, error)

SelectLatestLogEventSigsAddrsWithConfs finds the latest log by (address, event) combination that matches a list of Addresses and list of events

func (*DbORM) SelectLogs 

func (o *DbORM) SelectLogs(start, end int64, address common.Address, eventSig common.Hash, qopts ...pg.QOpt) ([]Log, error)

SelectLogsByBlockRangeFilter finds the logs in a given block range.

func (*DbORM) SelectLogsByBlockRange 

func (o *DbORM) SelectLogsByBlockRange(start, end int64) ([]Log, error)

func (*DbORM) SelectLogsCreatedAfter 

func (o *DbORM) SelectLogsCreatedAfter(address common.Address, eventSig common.Hash, after time.Time, confs Confirmations, qopts ...pg.QOpt) ([]Log, error)

SelectLogsCreatedAfter finds logs created after some timestamp.

func (*DbORM) SelectLogsDataWordBetween 

func (o *DbORM) SelectLogsDataWordBetween(address common.Address, eventSig common.Hash, wordIndexMin int, wordIndexMax int, wordValue common.Hash, confs Confirmations, qopts ...pg.QOpt) ([]Log, error)

func (*DbORM) SelectLogsDataWordGreaterThan 

func (o *DbORM) SelectLogsDataWordGreaterThan(address common.Address, eventSig common.Hash, wordIndex int, wordValueMin common.Hash, confs Confirmations, qopts ...pg.QOpt) ([]Log, error)

func (*DbORM) SelectLogsDataWordRange 

func (o *DbORM) SelectLogsDataWordRange(address common.Address, eventSig common.Hash, wordIndex int, wordValueMin, wordValueMax common.Hash, confs Confirmations, qopts ...pg.QOpt) ([]Log, error)

func (*DbORM) SelectLogsWithSigs 

func (o *DbORM) SelectLogsWithSigs(start, end int64, address common.Address, eventSigs []common.Hash, qopts ...pg.QOpt) (logs []Log, err error)

SelectLogsWithSigsByBlockRangeFilter finds the logs in the given block range with the given event signatures emitted from the given address.

type Exp 

type Exp struct {
	Address      common.Address
	EventSig     common.Hash
	Expiration   time.Time
	TimeNow      time.Time
	ShouldDelete bool
}

type Filter 

type Filter struct {
	Name      string // see FilterName(id, args) below
	EventSigs evmtypes.HashArray
	Addresses evmtypes.AddressArray
	Retention time.Duration
}

func (*Filter) Contains 

func (filter *Filter) Contains(other *Filter) bool

Contains returns true if this filter already fully Contains a filter passed to it.

type Log 

type Log struct {
	EvmChainId     *big.Big
	LogIndex       int64
	BlockHash      common.Hash
	BlockNumber    int64
	BlockTimestamp time.Time
	Topics         pq.ByteaArray
	EventSig       common.Hash
	Address        common.Address
	TxHash         common.Hash
	Data           []byte
	CreatedAt      time.Time
}

Log represents an EVM log.

func (*Log) GetTopics 

func (l *Log) GetTopics() []common.Hash

func (*Log) ToGethLog 

func (l *Log) ToGethLog() types.Log

type LogPoller 

type LogPoller interface {
	services.Service
	Replay(ctx context.Context, fromBlock int64) error
	ReplayAsync(fromBlock int64)
	RegisterFilter(filter Filter, qopts ...pg.QOpt) error
	UnregisterFilter(name string, qopts ...pg.QOpt) error
	HasFilter(name string) bool
	LatestBlock(qopts ...pg.QOpt) (LogPollerBlock, error)
	GetBlocksRange(ctx context.Context, numbers []uint64, qopts ...pg.QOpt) ([]LogPollerBlock, error)

	// General querying
	Logs(start, end int64, eventSig common.Hash, address common.Address, qopts ...pg.QOpt) ([]Log, error)
	LogsWithSigs(start, end int64, eventSigs []common.Hash, address common.Address, qopts ...pg.QOpt) ([]Log, error)
	LogsCreatedAfter(eventSig common.Hash, address common.Address, time time.Time, confs Confirmations, qopts ...pg.QOpt) ([]Log, error)
	LatestLogByEventSigWithConfs(eventSig common.Hash, address common.Address, confs Confirmations, qopts ...pg.QOpt) (*Log, error)
	LatestLogEventSigsAddrsWithConfs(fromBlock int64, eventSigs []common.Hash, addresses []common.Address, confs Confirmations, qopts ...pg.QOpt) ([]Log, error)
	LatestBlockByEventSigsAddrsWithConfs(fromBlock int64, eventSigs []common.Hash, addresses []common.Address, confs Confirmations, qopts ...pg.QOpt) (int64, error)

	// Content based querying
	IndexedLogs(eventSig common.Hash, address common.Address, topicIndex int, topicValues []common.Hash, confs Confirmations, qopts ...pg.QOpt) ([]Log, error)
	IndexedLogsByBlockRange(start, end int64, eventSig common.Hash, address common.Address, topicIndex int, topicValues []common.Hash, qopts ...pg.QOpt) ([]Log, error)
	IndexedLogsCreatedAfter(eventSig common.Hash, address common.Address, topicIndex int, topicValues []common.Hash, after time.Time, confs Confirmations, qopts ...pg.QOpt) ([]Log, error)
	IndexedLogsByTxHash(eventSig common.Hash, address common.Address, txHash common.Hash, qopts ...pg.QOpt) ([]Log, error)
	IndexedLogsTopicGreaterThan(eventSig common.Hash, address common.Address, topicIndex int, topicValueMin common.Hash, confs Confirmations, qopts ...pg.QOpt) ([]Log, error)
	IndexedLogsTopicRange(eventSig common.Hash, address common.Address, topicIndex int, topicValueMin common.Hash, topicValueMax common.Hash, confs Confirmations, qopts ...pg.QOpt) ([]Log, error)
	IndexedLogsWithSigsExcluding(address common.Address, eventSigA, eventSigB common.Hash, topicIndex int, fromBlock, toBlock int64, confs Confirmations, qopts ...pg.QOpt) ([]Log, error)
	LogsDataWordRange(eventSig common.Hash, address common.Address, wordIndex int, wordValueMin, wordValueMax common.Hash, confs Confirmations, qopts ...pg.QOpt) ([]Log, error)
	LogsDataWordGreaterThan(eventSig common.Hash, address common.Address, wordIndex int, wordValueMin common.Hash, confs Confirmations, qopts ...pg.QOpt) ([]Log, error)
	LogsDataWordBetween(eventSig common.Hash, address common.Address, wordIndexMin, wordIndexMax int, wordValue common.Hash, confs Confirmations, qopts ...pg.QOpt) ([]Log, error)
}
var (
	ErrDisabled                 = errors.New("log poller disabled")
	LogPollerDisabled LogPoller = disabled{}
)

type LogPollerBlock 

type LogPollerBlock struct {
	EvmChainId *big.Big
	BlockHash  common.Hash
	// Note geth uses int64 internally https://github.com/ethereum/go-ethereum/blob/f66f1a16b3c480d3a43ac7e8a09ab3e362e96ae4/eth/filters/api.go#L340
	BlockNumber          int64
	BlockTimestamp       time.Time
	FinalizedBlockNumber int64
	CreatedAt            time.Time
}

LogPollerBlock represents an unfinalized block used for reorg detection when polling.

func NewLogPollerBlock 

func NewLogPollerBlock(blockHash common.Hash, blockNumber int64, timestamp time.Time, finalizedBlockNumber int64) LogPollerBlock

type LogPollerTest 

type LogPollerTest interface {
	LogPoller
	PollAndSaveLogs(ctx context.Context, currentBlockNumber int64)
	BackupPollAndSaveLogs(ctx context.Context, backupPollerBlockDelay int64)
	Filter(from, to *big.Int, bh *common.Hash) ethereum.FilterQuery
	GetReplayFromBlock(ctx context.Context, requested int64) (int64, error)
	PruneOldBlocks(ctx context.Context) error
}

type ORM 

type ORM interface {
	InsertLogs(logs []Log, qopts ...pg.QOpt) error
	InsertLogsWithBlock(logs []Log, block LogPollerBlock, qopts ...pg.QOpt) error
	InsertFilter(filter Filter, qopts ...pg.QOpt) error

	LoadFilters(qopts ...pg.QOpt) (map[string]Filter, error)
	DeleteFilter(name string, qopts ...pg.QOpt) error

	DeleteBlocksBefore(end int64, qopts ...pg.QOpt) error
	DeleteLogsAndBlocksAfter(start int64, qopts ...pg.QOpt) error
	DeleteExpiredLogs(qopts ...pg.QOpt) error

	GetBlocksRange(start int64, end int64, qopts ...pg.QOpt) ([]LogPollerBlock, error)
	SelectBlockByNumber(blockNumber int64, qopts ...pg.QOpt) (*LogPollerBlock, error)
	SelectLatestBlock(qopts ...pg.QOpt) (*LogPollerBlock, error)

	SelectLogs(start, end int64, address common.Address, eventSig common.Hash, qopts ...pg.QOpt) ([]Log, error)
	SelectLogsWithSigs(start, end int64, address common.Address, eventSigs []common.Hash, qopts ...pg.QOpt) ([]Log, error)
	SelectLogsCreatedAfter(address common.Address, eventSig common.Hash, after time.Time, confs Confirmations, qopts ...pg.QOpt) ([]Log, error)
	SelectLatestLogByEventSigWithConfs(eventSig common.Hash, address common.Address, confs Confirmations, qopts ...pg.QOpt) (*Log, error)
	SelectLatestLogEventSigsAddrsWithConfs(fromBlock int64, addresses []common.Address, eventSigs []common.Hash, confs Confirmations, qopts ...pg.QOpt) ([]Log, error)
	SelectLatestBlockByEventSigsAddrsWithConfs(fromBlock int64, eventSigs []common.Hash, addresses []common.Address, confs Confirmations, qopts ...pg.QOpt) (int64, error)

	SelectIndexedLogs(address common.Address, eventSig common.Hash, topicIndex int, topicValues []common.Hash, confs Confirmations, qopts ...pg.QOpt) ([]Log, error)
	SelectIndexedLogsByBlockRange(start, end int64, address common.Address, eventSig common.Hash, topicIndex int, topicValues []common.Hash, qopts ...pg.QOpt) ([]Log, error)
	SelectIndexedLogsCreatedAfter(address common.Address, eventSig common.Hash, topicIndex int, topicValues []common.Hash, after time.Time, confs Confirmations, qopts ...pg.QOpt) ([]Log, error)
	SelectIndexedLogsTopicGreaterThan(address common.Address, eventSig common.Hash, topicIndex int, topicValueMin common.Hash, confs Confirmations, qopts ...pg.QOpt) ([]Log, error)
	SelectIndexedLogsTopicRange(address common.Address, eventSig common.Hash, topicIndex int, topicValueMin, topicValueMax common.Hash, confs Confirmations, qopts ...pg.QOpt) ([]Log, error)
	SelectIndexedLogsWithSigsExcluding(sigA, sigB common.Hash, topicIndex int, address common.Address, startBlock, endBlock int64, confs Confirmations, qopts ...pg.QOpt) ([]Log, error)
	SelectIndexedLogsByTxHash(address common.Address, eventSig common.Hash, txHash common.Hash, qopts ...pg.QOpt) ([]Log, error)
	SelectLogsDataWordRange(address common.Address, eventSig common.Hash, wordIndex int, wordValueMin, wordValueMax common.Hash, confs Confirmations, qopts ...pg.QOpt) ([]Log, error)
	SelectLogsDataWordGreaterThan(address common.Address, eventSig common.Hash, wordIndex int, wordValueMin common.Hash, confs Confirmations, qopts ...pg.QOpt) ([]Log, error)
	SelectLogsDataWordBetween(address common.Address, eventSig common.Hash, wordIndexMin int, wordIndexMax int, wordValue common.Hash, confs Confirmations, qopts ...pg.QOpt) ([]Log, error)
}

ORM represents the persistent data access layer used by the log poller. At this moment, it's a bit leaky abstraction, because it exposes some of the database implementation details (e.g. pg.Q). Ideally it should be agnostic and could be applied to any persistence layer. What is more, LogPoller should not be aware of the underlying database implementation and delegate all the queries to the ORM.

type ObservedORM 

type ObservedORM struct {
	ORM
	// contains filtered or unexported fields
}

ObservedORM is a decorator layer for ORM used by LogPoller, responsible for pushing Prometheus metrics reporting duration and size of result set for the queries. It doesn't change internal logic, because all calls are delegated to the origin ORM

func NewObservedORM 

func NewObservedORM(chainID *big.Int, db *sqlx.DB, lggr logger.Logger, cfg pg.QConfig) *ObservedORM

NewObservedORM creates an observed version of log poller's ORM created by NewORM Please see ObservedLogPoller for more details on how latencies are measured

func (*ObservedORM) DeleteBlocksBefore 

func (o *ObservedORM) DeleteBlocksBefore(end int64, qopts ...pg.QOpt) error

func (*ObservedORM) DeleteExpiredLogs 

func (o *ObservedORM) DeleteExpiredLogs(qopts ...pg.QOpt) error

func (*ObservedORM) DeleteFilter 

func (o *ObservedORM) DeleteFilter(name string, qopts ...pg.QOpt) error

func (*ObservedORM) DeleteLogsAndBlocksAfter 

func (o *ObservedORM) DeleteLogsAndBlocksAfter(start int64, qopts ...pg.QOpt) error

func (*ObservedORM) GetBlocksRange 

func (o *ObservedORM) GetBlocksRange(start int64, end int64, qopts ...pg.QOpt) ([]LogPollerBlock, error)

func (*ObservedORM) InsertFilter 

func (o *ObservedORM) InsertFilter(filter Filter, qopts ...pg.QOpt) error

func (*ObservedORM) InsertLogs 

func (o *ObservedORM) InsertLogs(logs []Log, qopts ...pg.QOpt) error

func (*ObservedORM) InsertLogsWithBlock 

func (o *ObservedORM) InsertLogsWithBlock(logs []Log, block LogPollerBlock, qopts ...pg.QOpt) error

func (*ObservedORM) LoadFilters 

func (o *ObservedORM) LoadFilters(qopts ...pg.QOpt) (map[string]Filter, error)

func (*ObservedORM) SelectBlockByNumber 

func (o *ObservedORM) SelectBlockByNumber(n int64, qopts ...pg.QOpt) (*LogPollerBlock, error)

func (*ObservedORM) SelectIndexedLogs 

func (o *ObservedORM) SelectIndexedLogs(address common.Address, eventSig common.Hash, topicIndex int, topicValues []common.Hash, confs Confirmations, qopts ...pg.QOpt) ([]Log, error)

func (*ObservedORM) SelectIndexedLogsByBlockRange 

func (o *ObservedORM) SelectIndexedLogsByBlockRange(start, end int64, address common.Address, eventSig common.Hash, topicIndex int, topicValues []common.Hash, qopts ...pg.QOpt) ([]Log, error)

func (*ObservedORM) SelectIndexedLogsByTxHash 

func (o *ObservedORM) SelectIndexedLogsByTxHash(address common.Address, eventSig common.Hash, txHash common.Hash, qopts ...pg.QOpt) ([]Log, error)

func (*ObservedORM) SelectIndexedLogsCreatedAfter 

func (o *ObservedORM) SelectIndexedLogsCreatedAfter(address common.Address, eventSig common.Hash, topicIndex int, topicValues []common.Hash, after time.Time, confs Confirmations, qopts ...pg.QOpt) ([]Log, error)

func (*ObservedORM) SelectIndexedLogsTopicGreaterThan 

func (o *ObservedORM) SelectIndexedLogsTopicGreaterThan(address common.Address, eventSig common.Hash, topicIndex int, topicValueMin common.Hash, confs Confirmations, qopts ...pg.QOpt) ([]Log, error)

func (*ObservedORM) SelectIndexedLogsTopicRange 

func (o *ObservedORM) SelectIndexedLogsTopicRange(address common.Address, eventSig common.Hash, topicIndex int, topicValueMin, topicValueMax common.Hash, confs Confirmations, qopts ...pg.QOpt) ([]Log, error)

func (*ObservedORM) SelectIndexedLogsWithSigsExcluding 

func (o *ObservedORM) SelectIndexedLogsWithSigsExcluding(sigA, sigB common.Hash, topicIndex int, address common.Address, startBlock, endBlock int64, confs Confirmations, qopts ...pg.QOpt) ([]Log, error)

func (*ObservedORM) SelectLatestBlock 

func (o *ObservedORM) SelectLatestBlock(qopts ...pg.QOpt) (*LogPollerBlock, error)

func (*ObservedORM) SelectLatestBlockByEventSigsAddrsWithConfs 

func (o *ObservedORM) SelectLatestBlockByEventSigsAddrsWithConfs(fromBlock int64, eventSigs []common.Hash, addresses []common.Address, confs Confirmations, qopts ...pg.QOpt) (int64, error)

func (*ObservedORM) SelectLatestLogByEventSigWithConfs 

func (o *ObservedORM) SelectLatestLogByEventSigWithConfs(eventSig common.Hash, address common.Address, confs Confirmations, qopts ...pg.QOpt) (*Log, error)

func (*ObservedORM) SelectLatestLogEventSigsAddrsWithConfs 

func (o *ObservedORM) SelectLatestLogEventSigsAddrsWithConfs(fromBlock int64, addresses []common.Address, eventSigs []common.Hash, confs Confirmations, qopts ...pg.QOpt) ([]Log, error)

func (*ObservedORM) SelectLogs 

func (o *ObservedORM) SelectLogs(start, end int64, address common.Address, eventSig common.Hash, qopts ...pg.QOpt) ([]Log, error)

func (*ObservedORM) SelectLogsCreatedAfter 

func (o *ObservedORM) SelectLogsCreatedAfter(address common.Address, eventSig common.Hash, after time.Time, confs Confirmations, qopts ...pg.QOpt) ([]Log, error)

func (*ObservedORM) SelectLogsDataWordBetween 

func (o *ObservedORM) SelectLogsDataWordBetween(address common.Address, eventSig common.Hash, wordIndexMin int, wordIndexMax int, wordValue common.Hash, confs Confirmations, qopts ...pg.QOpt) ([]Log, error)

func (*ObservedORM) SelectLogsDataWordGreaterThan 

func (o *ObservedORM) SelectLogsDataWordGreaterThan(address common.Address, eventSig common.Hash, wordIndex int, wordValueMin common.Hash, confs Confirmations, qopts ...pg.QOpt) ([]Log, error)

func (*ObservedORM) SelectLogsDataWordRange 

func (o *ObservedORM) SelectLogsDataWordRange(address common.Address, eventSig common.Hash, wordIndex int, wordValueMin, wordValueMax common.Hash, confs Confirmations, qopts ...pg.QOpt) ([]Log, error)

func (*ObservedORM) SelectLogsWithSigs 

func (o *ObservedORM) SelectLogsWithSigs(start, end int64, address common.Address, eventSigs []common.Hash, qopts ...pg.QOpt) ([]Log, error)

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