✏️ Editing: retry_operation.js Read Only

function RetryOperation(timeouts, options) {
  // Compatibility for the old (timeouts, retryForever) signature
  if (typeof options === 'boolean') {
    options = { forever: options };
  }

this._originalTimeouts = JSON.parse(JSON.stringify(timeouts));
  this._timeouts = timeouts;
  this._options = options || {};
  this._maxRetryTime = options && options.maxRetryTime || Infinity;
  this._fn = null;
  this._errors = [];
  this._attempts = 1;
  this._operationTimeout = null;
  this._operationTimeoutCb = null;
  this._timeout = null;
  this._operationStart = null;

if (this._options.forever) {
    this._cachedTimeouts = this._timeouts.slice(0);
  }
}
module.exports = RetryOperation;

RetryOperation.prototype.reset = function() {
  this._attempts = 1;
  this._timeouts = this._originalTimeouts;
}

RetryOperation.prototype.stop = function() {
  if (this._timeout) {
    clearTimeout(this._timeout);
  }

this._timeouts       = [];
  this._cachedTimeouts = null;
};

RetryOperation.prototype.retry = function(err) {
  if (this._timeout) {
    clearTimeout(this._timeout);
  }

if (!err) {
    return false;
  }
  var currentTime = new Date().getTime();
  if (err && currentTime - this._operationStart >= this._maxRetryTime) {
    this._errors.unshift(new Error('RetryOperation timeout occurred'));
    return false;
  }

this._errors.push(err);

var self = this;
  var timer = setTimeout(function() {
    self._attempts++;

if (self._operationTimeoutCb) {
      self._timeout = setTimeout(function() {
        self._operationTimeoutCb(self._attempts);
      }, self._operationTimeout);

if (self._options.unref) {
          self._timeout.unref();
      }
    }

self._fn(self._attempts);
  }, timeout);

if (this._options.unref) {
      timer.unref();
  }

return true;
};

RetryOperation.prototype.attempt = function(fn, timeoutOps) {
  this._fn = fn;

if (timeoutOps) {
    if (timeoutOps.timeout) {
      this._operationTimeout = timeoutOps.timeout;
    }
    if (timeoutOps.cb) {
      this._operationTimeoutCb = timeoutOps.cb;
    }
  }

var self = this;
  if (this._operationTimeoutCb) {
    this._timeout = setTimeout(function() {
      self._operationTimeoutCb();
    }, self._operationTimeout);
  }

this._operationStart = new Date().getTime();

this._fn(this._attempts);
};

RetryOperation.prototype.try = function(fn) {
  console.log('Using RetryOperation.try() is deprecated');
  this.attempt(fn);
};

RetryOperation.prototype.start = function(fn) {
  console.log('Using RetryOperation.start() is deprecated');
  this.attempt(fn);
};

RetryOperation.prototype.start = RetryOperation.prototype.try;

RetryOperation.prototype.errors = function() {
  return this._errors;
};

RetryOperation.prototype.attempts = function() {
  return this._attempts;
};

RetryOperation.prototype.mainError = function() {
  if (this._errors.length === 0) {
    return null;
  }

var counts = {};
  var mainError = null;
  var mainErrorCount = 0;

for (var i = 0; i < this._errors.length; i++) {
    var error = this._errors[i];
    var message = error.message;
    var count = (counts[message] || 0) + 1;

counts[message] = count;

if (count >= mainErrorCount) {
      mainError = error;
      mainErrorCount = count;
    }
  }

return mainError;
};

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