npm install abstract-chunk-store
Send a PR adding yours if you write a new one.
chunkStore = new ChunkStore(chunkLength)Create a new chunk store. Chunks must have a length of chunkLength.
chunkStore.put(index, chunkBuffer, [cb])Add a new chunk to the storage. Index should be an integer.
chunkStore.get(index, [options], cb)Retrieve a chunk stored. Index should be an integer. Options include:
{
offset: chunkByteOffset,
length: byteLength
}
If the index doesn't exist in the storage an error should be returned.
chunkStore.close([cb])Close the underlying resource, e.g. if the store is backed by a file, this would close the file descriptor.
chunkStore.destroy([cb])Destroy the file data, e.g. if the store is backed by a file, this would delete the file from the filesystem.
chunkStore.chunkLengthExpose the chunk length from the constructor so that code that receives a chunk store can know what size of chunks to write.
Publishing a test suite as a module lets multiple modules all ensure compatibility since they use the same test suite.
To use the test suite from this module you can require('abstract-chunk-store/tests').
An example of this can be found in the memory-chunk-store test suite.
To run the tests simply pass your test module (tap or tape or any other compatible
modules are supported) and your store's constructor (or a setup function) in:
var tests = require('abstract-chunk-store/tests')
tests(require('tape'), require('your-custom-chunk-store'))
If you make a new module that uses the abstract-chunk-store API, include this badge in your readme!
[](https://github.com/mafintosh/abstract-chunk-store)
An abstract chunk store is a binary data store that allows you to interact with individual chunks of a larger blob (a.k.a. binary file). A chunk can be thought of as a small partial blob that fits in memory.
Related:
MIT