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Hoist retry logic

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This commit is contained in:
Andras Schmelczer 2025-03-22 16:15:33 +00:00
commit c7e53bff26
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1 changed files with 215 additions and 189 deletions
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70
frontend/sync-client/src/services/connection-status.ts
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@ -39,65 +39,53 @@ export class ConnectionStatus {
return input.url;
}
public getFetchImplementation(
fetch: typeof globalThis.fetch,
{ doRetries = true }: { doRetries: boolean } = { doRetries: true }
): typeof globalThis.fetch {
return doRetries ? this.retriedFetchFactory(this.logger, fetch) : fetch;
}
public reset(): void {
this.rejectUntil(new Error("Sync was reset"));
[this.until, this.resolveUntil, this.rejectUntil] = createPromise();
}
private retriedFetchFactory(
public getFetchImplementation(
logger: Logger,
fetch: typeof globalThis.fetch = globalThis.fetch
): typeof globalThis.fetch {
return async (input: RequestInfo | URL): Promise<Response> => {
// eslint-disable-next-line @typescript-eslint/no-unnecessary-condition
while (true) {
while (!this.canFetch) {
await this.until;
}
while (!this.canFetch) {
await this.until;
}
try {
// https://github.com/jonbern/fetch-retry/blob/8684ef4e688375f623bd76f13add76dbc1d67cfb/index.js#L67C1-L70C21
const _input =
typeof Request !== "undefined" &&
input instanceof Request
? input.clone()
: input;
try {
// https://github.com/jonbern/fetch-retry/blob/8684ef4e688375f623bd76f13add76dbc1d67cfb/index.js#L67C1-L70C21
const _input =
typeof Request !== "undefined" && input instanceof Request
? input.clone()
: input;
const fetchPromise = fetch(_input);
const fetchPromise = fetch(_input);
// We only want to catch rejections from `this.until`
let result: symbol | Response | undefined = undefined;
do {
result = await Promise.race([this.until, fetchPromise]);
} while (result === ConnectionStatus.UNTIL_RESOLUTION);
// We only want to catch rejections from `this.until`
let result: symbol | Response | undefined = undefined;
do {
result = await Promise.race([this.until, fetchPromise]);
} while (result === ConnectionStatus.UNTIL_RESOLUTION);
const fetchResult: Response = result as Response; // eslint-disable-line @typescript-eslint/no-unsafe-type-assertion
const fetchResult: Response = result as Response; // eslint-disable-line @typescript-eslint/no-unsafe-type-assertion
if (!fetchResult.ok) {
this.logger.warn(
`Retrying fetch for ${ConnectionStatus.getUrlFromInput(
input
)}, got status ${fetchResult.status}`
);
}
return fetchResult;
} catch (error) {
logger.warn(
`Retrying fetch for ${ConnectionStatus.getUrlFromInput(
if (!fetchResult.ok) {
this.logger.warn(
`Fetch for ${ConnectionStatus.getUrlFromInput(
input
)}, got error: ${error}`
)}, got status ${fetchResult.status}`
);
}
await Promise.race([this.until, sleep(1000)]);
return fetchResult;
} catch (error) {
logger.warn(
`Fetch for ${ConnectionStatus.getUrlFromInput(
input
)}, got error: ${error}`
);
throw error;
}
};
}