@linkedmink/multilevel-aging-cache/dist/cache/OverwriteAgedDeleteStrategy.js

Package provides an interface to cache and persist data to Redis, MongoDB, memory

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.OverwriteAgedDeleteStrategy = void 0;
const AgingCacheWriteStrategy_1 = require("./AgingCacheWriteStrategy");
/**
 * Strategy to overwrite only if our value is newer than the high level
 */
class OverwriteAgedDeleteStrategy extends AgingCacheWriteStrategy_1.AgingCacheWriteStrategy {
    delete(key, force) {
        if (force) {
            return this.executeDelete(key);
        }
        return this.deleteConditionally(key);
    }
    evict(key, evictAtLevel, force) {
        if (force) {
            return this.executeDelete(key, evictAtLevel);
        }
        return this.deleteConditionally(key, evictAtLevel);
    }
    deleteConditionally(key, evictAtLevel) {
        return this.hierarchy.getValueAtTopLevel(key).then(highestAgedValue => {
            if (!highestAgedValue) {
                return this.executeDelete(key, evictAtLevel);
            }
            return this.hierarchy.getValueAtBottomLevel(key).then(lowestAgedValue => {
                if (lowestAgedValue &&
                    this.evictQueue.compare(lowestAgedValue.age, highestAgedValue.age) >= 0) {
                    return this.executeDelete(key, evictAtLevel);
                }
                this.logger.debug(`Delete deferred: key=${key},ageToSet=${lowestAgedValue ? lowestAgedValue.age : 'null'},ageFound=${highestAgedValue.age}`);
                return this.setFromHighestLevel(key, highestAgedValue);
            });
        });
    }
}
exports.OverwriteAgedDeleteStrategy = OverwriteAgedDeleteStrategy;