Base class for aggregate operation, sush as http request, write file.
npm install aggregate-baseBase class for aggregate operation, sush as http request, write file.
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[download-url]: https://npmjs.org/package/aggregate-base
``bash`
npm i aggregate-base --save
You can wrap Class for aggregate operation, if you have a Logger that write log to file.
`js
class Logger {
info(log) {
this.writeToFile(log);
}
writeToFile() {
// your implementation
}
}
`
However, it has bad performance that write file system every function call, so you can use this module to merge the operations.
`js
const { wrap } = require('aggregate-base');
class Logger {
info(log) {
this.writeToFile(log);
}
flush(logs) {
this.writeToFile(logs.join('\n'));
}
writeToFile() {
// your implementation
}
}
const WrapLogger = wrap(Logger, {
interval: 1000,
intercept: 'info',
flush: 'flush',
});
`
The module will create a loop (configured by interval), it will collect data by intercepting the specified intercept method, and call flush method after interval` with all collected data.
- interval: the time between flush
- intercept: the intercept method name of class, the method will not be run.
- interceptTransform: the function that can tranform the arguments of intercept method, if it return false, it won't cache this data
- flush: the flush method name of class.
- close: the close method name of class, it should be a async function.