/**
* An adapter is responsible for loading tapes and ops from a datasource -
* potentially a web API, a database or even a Bitcoin node. Operate ships with
* two default adapters, although these can be swapped out with any other
* adpater by changing the configuration.
*
* An adapter must implement one or more of the following static methods:
*
* * `fetchTx()`
* * `fetchTxBy()`
* * `fetchOps()`
*
* @interface
* @hideconstructor
*/
class Adapter {
/**
* Fetches a transaction by the given txid, and returns a Promise.
*
* @static
* @param {String} txid Transaction id
* @param {Object} opts Options
* @return {Promise}
*/
static fetchTx(txid, opts = {}) {
throw `${ this.constructor.name }#fetchTx() not implemented`;
}
/**
* Fetches a list of transactions by the given query object, and returns a Promise.
*
* @static
* @param {Object} query Query object
* @param {Object} opts Options
* @return {Promise}
*/
static fetchTxBy(query, opts = {}) {
throw `${ this.constructor.name }#fetchTxBy() not implemented`;
}
/**
* Fetches a list of Ops by the given list of Op references, and returns a Promise.
*
* @static
* @param {Array} refs Op references
* @param {Object} opts Options
* @return {Promise}
*/
static fetchOps(refs, opts = {}) {
throw `${ this.constructor.name }#fetchOps() not implemented`;
}
}
module.exports = AdapterSource