blockstore-core/dist/src/identity.js

Contains various implementations of the API contract described in interface-blockstore

import { NotFoundError } from 'interface-store';
import { BaseBlockstore } from './base.js';
// https://github.com/multiformats/multicodec/blob/d06fc6194710e8909bac64273c43f16b56ca4c34/table.csv#L2
const IDENTITY_CODEC = 0x00;
export class IdentityBlockstore extends BaseBlockstore {
    child;
    constructor(child) {
        super();
        this.child = child;
    }
    put(key, block, options) {
        if (key.multihash.code === IDENTITY_CODEC) {
            options?.signal?.throwIfAborted();
            return key;
        }
        if (this.child == null) {
            options?.signal?.throwIfAborted();
            return key;
        }
        return this.child.put(key, block, options);
    }
    get(key, options) {
        if (key.multihash.code === IDENTITY_CODEC) {
            options?.signal?.throwIfAborted();
            return key.multihash.digest;
        }
        if (this.child == null) {
            options?.signal?.throwIfAborted();
            throw new NotFoundError();
        }
        return this.child.get(key, options);
    }
    has(key, options) {
        if (key.multihash.code === IDENTITY_CODEC) {
            options?.signal?.throwIfAborted();
            return true;
        }
        if (this.child == null) {
            options?.signal?.throwIfAborted();
            return false;
        }
        return this.child.has(key, options);
    }
    delete(key, options) {
        if (key.code === IDENTITY_CODEC) {
            options?.signal?.throwIfAborted();
            return;
        }
        if (this.child != null) {
            return this.child.delete(key, options);
        }
    }
    getAll(options) {
        if (this.child != null) {
            return this.child.getAll(options);
        }
        options?.signal?.throwIfAborted();
        return [];
    }
}
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