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/*
This file is part of GNU Taler
(C) 2022 Taler Systems SA
TALER is free software; you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation; either version 3, or (at your option) any later version.
TALER is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with
TALER; see the file COPYING. If not, see <http://www.gnu.org/licenses/>
*/
/**
* Implementation of dev experiments, i.e. scenarios
* triggered by taler://dev-experiment URIs.
*
* @author Florian Dold <dold@taler.net>
*/
/**
* Imports.
*/
import {
DenomLossEventType,
Logger,
RefreshReason,
TalerPreciseTimestamp,
encodeCrock,
getRandomBytes,
parseDevExperimentUri,
} from "@gnu-taler/taler-util";
import {
HttpRequestLibrary,
HttpRequestOptions,
HttpResponse,
} from "@gnu-taler/taler-util/http";
import { PendingTaskType, constructTaskIdentifier } from "./common.js";
import {
DenomLossEventRecord,
DenomLossStatus,
RefreshGroupRecord,
RefreshOperationStatus,
timestampPreciseToDb,
} from "./db.js";
import { DenomLossTransactionContext } from "./exchanges.js";
import { RefreshTransactionContext } from "./refresh.js";
import { WalletExecutionContext } from "./wallet.js";
const logger = new Logger("dev-experiments.ts");
/**
* Apply a dev experiment to the wallet database / state.
*/
export async function applyDevExperiment(
wex: WalletExecutionContext,
uri: string,
): Promise<void> {
logger.info(`applying dev experiment ${uri}`);
const parsedUri = parseDevExperimentUri(uri);
if (!parsedUri) {
logger.info("unable to parse dev experiment URI");
return;
}
if (!wex.ws.config.testing.devModeActive) {
throw Error("can't handle devmode URI unless devmode is active");
}
switch (parsedUri.devExperimentId) {
case "start-block-refresh": {
wex.ws.devExperimentState.blockRefreshes = true;
return;
}
case "stop-block-refresh": {
wex.ws.devExperimentState.blockRefreshes = false;
return;
}
case "insert-pending-refresh": {
const refreshGroupId = encodeCrock(getRandomBytes(32));
await wex.db.runReadWriteTx(
{ storeNames: ["refreshGroups", "transactionsMeta"] },
async (tx) => {
const newRg: RefreshGroupRecord = {
currency: "TESTKUDOS",
expectedOutputPerCoin: [],
inputPerCoin: [],
oldCoinPubs: [],
operationStatus: RefreshOperationStatus.Pending,
reason: RefreshReason.Manual,
refreshGroupId,
statusPerCoin: [],
timestampCreated: timestampPreciseToDb(TalerPreciseTimestamp.now()),
timestampFinished: undefined,
originatingTransactionId: undefined,
infoPerExchange: {},
};
await tx.refreshGroups.put(newRg);
const ctx = new RefreshTransactionContext(wex, refreshGroupId);
await ctx.updateTransactionMeta(tx);
},
);
wex.taskScheduler.startShepherdTask(
constructTaskIdentifier({
tag: PendingTaskType.Refresh,
refreshGroupId,
}),
);
return;
}
case "insert-denom-loss": {
await wex.db.runReadWriteTx(
{ storeNames: ["denomLossEvents", "transactionsMeta"] },
async (tx) => {
const eventId = encodeCrock(getRandomBytes(32));
const newRg: DenomLossEventRecord = {
amount: "TESTKUDOS:42",
currency: "TESTKUDOS",
exchangeBaseUrl: "https://exchange.test.taler.net/",
denomLossEventId: eventId,
denomPubHashes: [
encodeCrock(getRandomBytes(64)),
encodeCrock(getRandomBytes(64)),
],
eventType: DenomLossEventType.DenomExpired,
status: DenomLossStatus.Done,
timestampCreated: timestampPreciseToDb(TalerPreciseTimestamp.now()),
};
await tx.denomLossEvents.put(newRg);
const ctx = new DenomLossTransactionContext(
wex,
newRg.denomLossEventId,
);
await ctx.updateTransactionMeta(tx);
},
);
return;
}
}
throw Error(`dev-experiment id not understood ${parsedUri.devExperimentId}`);
}
export class DevExperimentHttpLib implements HttpRequestLibrary {
_isDevExperimentLib = true;
underlyingLib: HttpRequestLibrary;
constructor(lib: HttpRequestLibrary) {
this.underlyingLib = lib;
}
fetch(
url: string,
opt?: HttpRequestOptions | undefined,
): Promise<HttpResponse> {
logger.trace(`devexperiment httplib ${url}`);
return this.underlyingLib.fetch(url, opt);
}
}
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