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Add tryToDecodeLogOrNoOp and _getEventSignatureFromAbiByName on contract_wrapper

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This commit is contained in:
Leonid Logvinov
2017-10-03 15:51:52 +03:00
parent db08896274
commit efa85f844b
1 changed files with 18 additions and 2 deletions
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20
src/contract_wrappers/contract_wrapper.ts
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@@ -1,13 +1,23 @@
import * as _ from 'lodash';
import * as Web3 from 'web3';
import {Web3Wrapper} from '../web3_wrapper';
import {ZeroExError, Artifact} from '../types';
import {AbiDecoder} from '../utils/abi_decoder';
import {ZeroExError, Artifact, LogWithDecodedArgs, RawLog, ContractEvents} from '../types';
import {utils} from '../utils/utils';
export class ContractWrapper {
protected _web3Wrapper: Web3Wrapper;
constructor(web3Wrapper: Web3Wrapper) {
private _abiDecoder?: AbiDecoder;
constructor(web3Wrapper: Web3Wrapper, abiDecoder?: AbiDecoder) {
this._web3Wrapper = web3Wrapper;
this._abiDecoder = abiDecoder;
}
protected tryToDecodeLogOrNoOp(log: Web3.LogEntry): LogWithDecodedArgs|RawLog {
if (_.isUndefined(this._abiDecoder)) {
throw new Error(ZeroExError.NoAbiDecoder);
}
const logWithDecodedArgs = this._abiDecoder.tryToDecodeLogOrNoOp(log);
return logWithDecodedArgs;
}
protected async _instantiateContractIfExistsAsync<A extends Web3.ContractInstance>(artifact: Artifact,
addressIfExists?: string,
@@ -16,4 +26,10 @@ export class ContractWrapper {
await this._web3Wrapper.getContractInstanceFromArtifactAsync<A>(artifact, addressIfExists);
return contractInstance;
}
protected _getEventSignatureFromAbiByName(abi: Web3.ContractAbi, eventName: ContractEvents): string {
const eventAbi = _.filter(abi, {name: eventName})[0] as Web3.EventAbi;
const types = _.map(eventAbi.inputs, 'type');
const signature = `${eventAbi.name}(${types.join(',')})`;
return signature;
}
}