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@koopjs/cache-memory

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@koopjs/cache-memory - npm Package Compare versions

Comparing version

1.1.2
to
1.2.0

src/helper.js

5

CHANGELOG.md

@@ -5,2 +5,6 @@ # Change Log

## [1.2.0] - 2022-06-23
### Changed
* Fixed an issue where some geojson properties (like `crs`) were lost in the caching procedure
## [1.1.2] - 2022-04-15

@@ -30,2 +34,3 @@ ### Changed

[1.2.0]: https://github.com/koopjs/koop-cache-memory/releases/tag/v1.2.0
[1.1.2]: https://github.com/koopjs/koop-cache-memory/releases/tag/v1.1.2

@@ -32,0 +37,0 @@ [1.1.1]: https://github.com/koopjs/koop-cache-memory/releases/tag/v1.1.1

2

package.json
{
"name": "@koopjs/cache-memory",
"version": "1.1.2",
"version": "1.2.0",
"description": "An in-memory cache for KOop",

@@ -5,0 +5,0 @@ "main": "src/index.js",

32

src/index.js
const Util = require('util')
const EventEmitter = require('events')
const _ = require('lodash')
const { asCachableGeojson } = require('./helper')
const Readable = require('stream').Readable
// Convenience to make callbacks optional in most functions
function noop () {}
function noop() { }
function Cache (options = {}) {
function Cache(options = {}) {
this.store = new Map()

@@ -22,9 +23,8 @@ this.catalog.store = new Map()

Cache.prototype.insert = function (key, geojson, options = {}, callback = noop) {
// support a feature collection or an array of features
if (this.store.has(key)) return callback(new Error('Cache key is already in use'))
const features = geojson.features ? geojson.features : geojson
this.store.set(key, features)
const metadata = geojson.metadata || {}
geojson = asCachableGeojson(geojson);
this.store.set(key, geojson)
const metadata = geojson.metadata;
if (options.ttl) metadata.expires = Date.now() + (options.ttl * 1000)
this.catalog.insert(key, metadata, callback)
this.catalog.insert(key, geojson.metadata, callback)
}

@@ -41,6 +41,5 @@

Cache.prototype.update = function (key, geojson, options = {}, callback = noop) {
// support a feature collection or an array of features
if (!this.store.has(key)) return callback(new Error('Resource not found'))
const features = geojson.features ? geojson.features : geojson
this.store.set(key, features)
geojson = asCachableGeojson(geojson);
this.store.set(key, geojson)
const existingMetadata = this.catalog.store.get(key)

@@ -53,5 +52,5 @@ const metadata = geojson.metadata || existingMetadata

Cache.prototype.append = function (key, geojson, options = {}, callback = noop) {
const features = geojson.features ? geojson.features : geojson
geojson = asCachableGeojson(geojson);
const existing = this.store.get(key)
this.store.set(key, features.concat(existing))
existing.features = existing.features.concat(geojson.features)
this.catalog.update(key, { updated: Date.now() })

@@ -63,5 +62,4 @@ callback()

if (!this.store.has(key)) return callback(new Error('Resource not found'))
const features = this.store.get(key)
const metadata = this.catalog.store.get(key)
const geojson = { type: 'FeatureCollection', metadata, features }
const geojson = this.store.get(key)
geojson.metadata = this.catalog.store.get(key)
callback(null, geojson)

@@ -72,4 +70,4 @@ return geojson

Cache.prototype.createStream = function (key, options = {}) {
const features = this.store.get(key)
return Readable.from(features)
const geojson = this.store.get(key)
return Readable.from(geojson.features)
}

@@ -76,0 +74,0 @@