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- "use strict";
- var ReadPreference = function(mode, tags, options) {
- if(!(this instanceof ReadPreference)) {
- return new ReadPreference(mode, tags, options);
- }
- this._type = 'ReadPreference';
- this.mode = mode;
- this.tags = tags;
- this.options = options;
-
- if(tags && typeof tags == 'object' && !Array.isArray(tags)) {
- if(tags.maxStalenessSeconds) {
- this.options = tags;
- this.tags = null;
- }
- }
-
- if(this.options && this.options.maxStalenessSeconds) {
- this.maxStalenessSeconds = this.options.maxStalenessSeconds;
- }
- }
- ReadPreference.isValid = function(_mode) {
- return (_mode == ReadPreference.PRIMARY || _mode == ReadPreference.PRIMARY_PREFERRED
- || _mode == ReadPreference.SECONDARY || _mode == ReadPreference.SECONDARY_PREFERRED
- || _mode == ReadPreference.NEAREST
- || _mode == true || _mode == false || _mode == null);
- }
- ReadPreference.prototype.isValid = function(mode) {
- var _mode = typeof mode == 'string' ? mode : this.mode;
- return ReadPreference.isValid(_mode);
- }
- ReadPreference.prototype.toObject = function() {
- var object = {mode:this.mode};
- if(this.tags != null) {
- object['tags'] = this.tags;
- }
- if(this.maxStalenessSeconds) {
- object['maxStalenessSeconds'] = this.maxStalenessSeconds;
- }
- return object;
- }
- ReadPreference.prototype.toJSON = function() {
- return this.toObject();
- }
- ReadPreference.PRIMARY = 'primary';
- ReadPreference.PRIMARY_PREFERRED = 'primaryPreferred';
- ReadPreference.SECONDARY = 'secondary';
- ReadPreference.SECONDARY_PREFERRED = 'secondaryPreferred';
- ReadPreference.NEAREST = 'nearest'
- module.exports = ReadPreference;
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