b38dea0597
Share Gaia assets and adapters, keep private profiles and development documents local, and update both public READMEs.
56 lines
2 KiB
JavaScript
56 lines
2 KiB
JavaScript
// Shared stores are authorized against the host's installed manifest registry.
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export class DataStoreService {
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constructor(apps, storage, notify) {
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Object.assign(this, { apps, storage, notify });
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}
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list(app, name) {
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return this.apps
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.filter(
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(owner) =>
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Object.hasOwn(owner.manifest['datastores-owned'] || {}, name) &&
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(owner === app || Object.hasOwn(app.manifest['datastores-access'] || {}, name)),
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)
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.map((owner) => ({
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name,
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owner: owner.manifestURL,
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readOnly:
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owner !== app &&
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(!!app.manifest['datastores-access'][name].readonly ||
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app.manifest['datastores-access'][name].access === 'readonly'),
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}));
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}
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async run(app, { name, owner, operation, args = [] }) {
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const allowed = this.list(app, name).find((store) => store.owner === owner);
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if (!allowed) throw new Error('DATASTORE_DENIED');
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const write = ['add', 'put', 'remove', 'clear'].includes(operation);
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if (write && allowed.readOnly) throw new Error('DATASTORE_READ_ONLY');
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if (!['get', 'snapshot', 'length', 'add', 'put', 'remove', 'clear'].includes(operation))
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throw new Error('METHOD_NOT_SUPPORTED');
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if (!Array.isArray(args) || args.length > 128) throw new Error('INVALID_ARGUMENT');
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const ids =
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operation === 'get'
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? args
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: operation === 'remove'
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? [args[0]]
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: ['add', 'put'].includes(operation) && args[1] !== undefined
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? [args[1]]
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: [];
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for (const id of ids) {
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if (
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!(typeof id === 'string' && id.length > 0 && id.length <= 512) &&
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!(Number.isSafeInteger(id) && id >= 0)
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)
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throw new Error('INVALID_KEY');
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}
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const result = await this.storage.run(name + '\n' + owner, operation, args);
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if (write)
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this.notify({
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name,
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owner,
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revisionId: result.revisionId,
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operation: operation === 'put' ? 'update' : operation,
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id: operation === 'remove' ? args[0] : result.value,
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});
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return result.value;
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}
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}
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