KeyNameLayer

KeyNameLayer is a WranggleStorage feature layer that adds a prefix to each key, effectively imposing an isolated namespace on the store.

For example, we construct two stores in different namespaces:

const eastStore = new WranggleStorage({ bucket: 'Region:east' })
const westStore = new WranggleStorage({ bucket: 'Region:west' })

Each store can get/set items in isolation, even with the same key:

await eastStore.set({ lunch: 'philly' })
await westStore.set({ lunch: 'burrito' })

The underlying store will now have two items set without conflict, with keys: Region:east/lunch and Region:west/lunch.

Applying the feature

When constructing your WranggleStorage instance, use the bucket keyword to add the feature:

const store = new WranggleStorage({ bucket: 'SomeNamespace' }); 

You can also supply an options object, should you want to supply it with secondary/advanced options.

Options

Primary option:

• bucket string prefix to prepend to keys. The bucketDelimeter option will be added.

Secondary/advanced options:

• bucketDelimeter string added to bucket value when provided. Default is "/".

• prefix string prepended to keys. Similar to bucket but bucketDelimeter is not added.

• suffix string appended to keys. Use is discouraged! (Because the ExpirationLayer uses a suffix and if this layer does so too, layer order can no longer be ignored.)

Installing From Individual Packages

The KeyNameLayer is included in the @wranggle/storage-web and @wranggle/storage-node bundles.

Or you can add/install the individual package, alongside @wranggle/storage-core and a persistence adapter:

1. Add the @wranggle/storage-key-name-layer package to your project:

   # From the command line using yarn:
   yarn add @wranggle/storage-key-name-layer
      
   # or with npm:
   npm install @wranggle/storage-key-name-layer

2. In your JavaScript, import or require the packages:

   import KeyNameLayer from '@wranggle/storage-key-name-layer'
   // or:
   const KeyNameLayer = require('@wranggle/storage-key-name-layer')

3. Instantiate your store:

   const store = new WranggleStorage({ expire: myDuration });

   Or do so without the construction shortcut:

   const store = new WranggleStorage({ persist: new KeyNameLayer({ duration: myDuration }));