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feat: call intervals and options parameter

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This commit is contained in:
Richard Ramos 2019-08-29 14:46:46 -04:00
parent 916d4c0821
commit 3425c1e851
1 changed files with 36 additions and 13 deletions
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45
src/eventSyncer.js
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@ -9,15 +9,19 @@ const Web3Eth = require('web3-eth');
class EventSyncer { class EventSyncer {
constructor(provider, dbFilename) { constructor(provider, options, ) {
this.events = new Events(); this.events = new Events();
this.web3 = new Web3Eth(provider); this.web3 = new Web3Eth(provider);
this.dbFilename = dbFilename || 'phoenix.db'; this.intervalTracker = [];
this.options = {};
this.options.callInterval = options.callInterval || 0;
this.options.dbFilename = options.dbFilename || 'phoenix.db';
} }
init() { init() {
return new Promise((resolve, reject) => { return new Promise((resolve, reject) => {
this._db = new Database(this.dbFilename, this.events, resolve); this._db = new Database(this.options.dbFilename, this.events, resolve);
this.db = this._db.db; this.db = this._db.db;
}) })
} }
@ -82,22 +86,41 @@ class EventSyncer {
// TODO: should save value in database // TODO: should save value in database
trackProperty(contractInstance, propName, methodArgs = [], callArgs = {}) { trackProperty(contractInstance, propName, methodArgs = [], callArgs = {}) {
let sub = new ReplaySubject(); const sub = new ReplaySubject();
let method = contractInstance.methods[propName].apply(contractInstance.methods[propName], methodArgs) const method = contractInstance.methods[propName].apply(contractInstance.methods[propName], methodArgs)
const callContractMethod = () => {
method.call.apply(method.call, [callArgs, (err, result) => { method.call.apply(method.call, [callArgs, (err, result) => {
sub.next(result) if(err) {
}]) sub.error(err);
return;
}
sub.next(result);
}]);
};
this.web3.subscribe('newBlockHeaders', (error, result) => { callContractMethod();
method.call.apply(method.call, [callArgs, (err, result) => {
sub.next(result) if(this.options.callInterval > 0){
}]) this.intervalTracker.push(setInterval(callContractMethod, this.options.callInterval));
} else {
this.web3.subscribe('newBlockHeaders', (err, result) => {
if(err) {
sub.error(err);
return;
}
callContractMethod();
}) })
}
return sub.pipe(distinctUntilChanged((a, b) => equal(a, b))); return sub.pipe(distinctUntilChanged((a, b) => equal(a, b)));
} }
clear(){
this.intervalTracker.forEach(clearInterval);
this.intervalTracker = [];
}
} }
module.exports = EventSyncer; module.exports = EventSyncer;