How to make Sails.js app listen to events of ethereum blokchain to perform CRUD on persistence layer
I have a smart contract deployed on Ethereum blockchain and it emits some event with necessary data.
I have a sails.js application which needs to listen to this event.
Roughly, the javascript code looks like -
var event = contract.myEvent();
event.watch((err, res) => {
console.log(res); // event response
// API call to DB for persistence
});My question is where should this code sit in sails.js application as sails.js follows MVC, is it a good idea to use sails.js ?
Suggestions about design pattern are appreciated.
node.js sails.js ethereum web3
asked Nov 21 '18 at 14:25
PratikPratik
1115
add a comment |
I have a smart contract deployed on Ethereum blockchain and it emits some event with necessary data.
I have a sails.js application which needs to listen to this event.
Roughly, the javascript code looks like -
var event = contract.myEvent();
event.watch((err, res) => {
console.log(res); // event response
// API call to DB for persistence
});My question is where should this code sit in sails.js application as sails.js follows MVC, is it a good idea to use sails.js ?
Suggestions about design pattern are appreciated.
node.js sails.js ethereum web3
asked Nov 21 '18 at 14:25
PratikPratik
1115
add a comment |
I have a smart contract deployed on Ethereum blockchain and it emits some event with necessary data.
I have a sails.js application which needs to listen to this event.
Roughly, the javascript code looks like -
var event = contract.myEvent();
event.watch((err, res) => {
console.log(res); // event response
// API call to DB for persistence
});My question is where should this code sit in sails.js application as sails.js follows MVC, is it a good idea to use sails.js ?
Suggestions about design pattern are appreciated.
node.js sails.js ethereum web3
asked Nov 21 '18 at 14:25
PratikPratik
1115
I have a smart contract deployed on Ethereum blockchain and it emits some event with necessary data.
I have a sails.js application which needs to listen to this event.
Roughly, the javascript code looks like -
var event = contract.myEvent();
event.watch((err, res) => {
console.log(res); // event response
// API call to DB for persistence
});My question is where should this code sit in sails.js application as sails.js follows MVC, is it a good idea to use sails.js ?
Suggestions about design pattern are appreciated.
var event = contract.myEvent();
event.watch((err, res) => {
console.log(res); // event response
// API call to DB for persistence
});var event = contract.myEvent();
event.watch((err, res) => {
console.log(res); // event response
// API call to DB for persistence
});node.js sails.js ethereum web3
node.js sails.js ethereum web3
asked Nov 21 '18 at 14:25
PratikPratik
1115
asked Nov 21 '18 at 14:25
PratikPratik
1115
asked Nov 21 '18 at 14:25
PratikPratik
1115
asked Nov 21 '18 at 14:25
PratikPratik
1115
asked Nov 21 '18 at 14:25
PratikPratik
1115
1115
add a comment |
add a comment |
1 Answer
1
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This code should be excuted as a Service at the application start time.
for example you can create a file named EventsService.js :
let event = contract.myEvent();
exports.start = function () {
event.watch((err, res) => {
console.log(res); // event response
// API call to DB for persistence
});
}
and then you can start the service like this: (from the app.js file)
const eventService = require('path/to/EventService.js');
eventService.start();
answered Nov 22 '18 at 13:03
maroodbmaroodb
181112
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
This code should be excuted as a Service at the application start time.
for example you can create a file named EventsService.js :
let event = contract.myEvent();
exports.start = function () {
event.watch((err, res) => {
console.log(res); // event response
// API call to DB for persistence
});
}
and then you can start the service like this: (from the app.js file)
const eventService = require('path/to/EventService.js');
eventService.start();
answered Nov 22 '18 at 13:03
maroodbmaroodb
181112
add a comment |
This code should be excuted as a Service at the application start time.
for example you can create a file named EventsService.js :
let event = contract.myEvent();
exports.start = function () {
event.watch((err, res) => {
console.log(res); // event response
// API call to DB for persistence
});
}
and then you can start the service like this: (from the app.js file)
const eventService = require('path/to/EventService.js');
eventService.start();
answered Nov 22 '18 at 13:03
maroodbmaroodb
181112
add a comment |
This code should be excuted as a Service at the application start time.
for example you can create a file named EventsService.js :
let event = contract.myEvent();
exports.start = function () {
event.watch((err, res) => {
console.log(res); // event response
// API call to DB for persistence
});
}
and then you can start the service like this: (from the app.js file)
const eventService = require('path/to/EventService.js');
eventService.start();
answered Nov 22 '18 at 13:03
maroodbmaroodb
181112
This code should be excuted as a Service at the application start time.
for example you can create a file named EventsService.js :
let event = contract.myEvent();
exports.start = function () {
event.watch((err, res) => {
console.log(res); // event response
// API call to DB for persistence
});
}
and then you can start the service like this: (from the app.js file)
const eventService = require('path/to/EventService.js');
eventService.start();
answered Nov 22 '18 at 13:03
maroodbmaroodb
181112
answered Nov 22 '18 at 13:03
maroodbmaroodb
181112
answered Nov 22 '18 at 13:03
maroodbmaroodb
181112
answered Nov 22 '18 at 13:03
maroodbmaroodb
181112
181112
add a comment |
add a comment |
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