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Use a custom JS tracer

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This commit is contained in:
Leonid Logvinov
2019-01-14 11:38:36 +01:00
parent bb992458a3
commit ab5cd8f938
1 changed files with 18 additions and 17 deletions
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35
packages/sol-tracing-utils/src/trace_info_subprovider.ts
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@@ -1,4 +1,3 @@
import { StructLog } from 'ethereum-types';
import * as _ from 'lodash';
import { constants } from './constants';
@@ -16,22 +15,24 @@ export abstract class TraceInfoSubprovider extends TraceCollectionSubprovider {
// For very large traces we use a custom tracer that outputs a format compatible with a
// regular trace. We only need the 2nd item on the stack when the instruction is a call.
// By not including othe stack values, we severly limit the amount of data to be collectd.
const tracer =
'{' +
' data: [],' +
' step: function(log) {' +
' const op = log.op.toString();' +
' const opn = 0 | log.op.toNumber();' +
' const pc = 0 | log.getPC();' +
' const depth = 0 | log.getDepth();' +
' const gas = 0 | log.getGas();' +
' const isCall = opn == 0xf1 || opn == 0xf2 || opn == 0xf4 || opn == 0xf5;' +
" const stack = isCall ? ['0x'+log.stack.peek(1).toString(16), null] : null;" +
' this.data.push({ pc, gas, depth, op, stack}); ' +
' },' +
' fault: function() { },' +
' result: function() { return {structLogs: this.data}; }' +
'}';
const tracer = `
{
data: [],
step: function(log) {
const op = log.op.toString();
const opn = 0 | log.op.toNumber();
const pc = 0 | log.getPC();
const depth = 0 | log.getDepth();
const gasCost = 0 | log.getCost();
const gas = 0 | log.getGas();
const isCall = opn == 0xf1 || opn == 0xf2 || opn == 0xf4 || opn == 0xf5;
const stack = isCall ? ['0x'+log.stack.peek(1).toString(16), null] : null;
this.data.push({ pc, gasCost, depth, op, stack, gas });
},
fault: function() { },
result: function() { return {structLogs: this.data}; }
}
`;
const trace = await this._web3Wrapper.getTransactionTraceAsync(txHash, { tracer, timeout: '600s' });
const tracesByContractAddress = getTracesByContractAddress(trace.structLogs, address);
const subcallAddresses = _.keys(tracesByContractAddress);