forked from cerc-io/laconicd-deprecated
80 lines
2.2 KiB
Go
80 lines
2.2 KiB
Go
package rpc
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import (
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"encoding/json"
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"fmt"
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"github.com/cosmos/cosmos-sdk/client/context"
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"github.com/cosmos/ethermint/x/evm/types"
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"math/big"
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ethtypes "github.com/ethereum/go-ethereum/core/types"
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"github.com/ethereum/go-ethereum/eth/filters"
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"github.com/ethereum/go-ethereum/rpc"
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)
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// PublicFilterAPI is the eth_ prefixed set of APIs in the Web3 JSON-RPC spec.
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type PublicFilterAPI struct {
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cliCtx context.CLIContext
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}
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// NewPublicEthAPI creates an instance of the public ETH Web3 API.
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func NewPublicFilterAPI(cliCtx context.CLIContext) *PublicFilterAPI {
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return &PublicFilterAPI{
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cliCtx: cliCtx,
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}
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}
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// GetLogs returns logs matching the given argument that are stored within the state.
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//
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// https://github.com/ethereum/wiki/wiki/JSON-RPC#eth_getlogs
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func (e *PublicFilterAPI) GetLogs(criteria filters.FilterCriteria) ([]*ethtypes.Log, error) {
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var filter *Filter
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if criteria.BlockHash != nil {
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/*
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Still need to add blockhash in prepare function for log entry
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*/
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filter = NewBlockFilter(*criteria.BlockHash, criteria.Addresses, criteria.Topics)
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results := e.getLogs()
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logs := filterLogs(results, nil, nil, filter.addresses, filter.topics)
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return logs, nil
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}
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// Convert the RPC block numbers into internal representations
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begin := rpc.LatestBlockNumber.Int64()
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if criteria.FromBlock != nil {
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begin = criteria.FromBlock.Int64()
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}
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from := big.NewInt(begin)
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end := rpc.LatestBlockNumber.Int64()
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if criteria.ToBlock != nil {
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end = criteria.ToBlock.Int64()
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}
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to := big.NewInt(end)
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results := e.getLogs()
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logs := filterLogs(results, from, to, criteria.Addresses, criteria.Topics)
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return returnLogs(logs), nil
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}
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func (e *PublicFilterAPI) getLogs() (results []*ethtypes.Log) {
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l, _, err := e.cliCtx.QueryWithData(fmt.Sprintf("custom/%s/logs", types.ModuleName), nil)
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if err != nil {
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fmt.Printf("error from querier %e ", err)
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}
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if err := json.Unmarshal(l, &results); err != nil {
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panic(err)
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}
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return results
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}
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// returnLogs is a helper that will return an empty log array in case the given logs array is nil,
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// otherwise the given logs array is returned.
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func returnLogs(logs []*ethtypes.Log) []*ethtypes.Log {
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if logs == nil {
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return []*ethtypes.Log{}
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}
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return logs
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}
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