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Original file line number | Diff line number | Diff line change |
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"use strict"; | ||
var __importDefault = (this && this.__importDefault) || function (mod) { | ||
return (mod && mod.__esModule) ? mod : { "default": mod }; | ||
}; | ||
Object.defineProperty(exports, "__esModule", { value: true }); | ||
exports.fetchWithRetry = void 0; | ||
/* | ||
Copyright 2023 The Sigstore Authors. | ||
Licensed under the Apache License, Version 2.0 (the "License"); | ||
you may not use this file except in compliance with the License. | ||
You may obtain a copy of the License at | ||
http://www.apache.org/licenses/LICENSE-2.0 | ||
Unless required by applicable law or agreed to in writing, software | ||
distributed under the License is distributed on an "AS IS" BASIS, | ||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
See the License for the specific language governing permissions and | ||
limitations under the License. | ||
*/ | ||
const http2_1 = require("http2"); | ||
const make_fetch_happen_1 = __importDefault(require("make-fetch-happen")); | ||
const proc_log_1 = require("proc-log"); | ||
const promise_retry_1 = __importDefault(require("promise-retry")); | ||
const util_1 = require("../util"); | ||
const error_1 = require("./error"); | ||
const { HTTP2_HEADER_LOCATION, HTTP2_HEADER_CONTENT_TYPE, HTTP2_HEADER_USER_AGENT, HTTP_STATUS_INTERNAL_SERVER_ERROR, HTTP_STATUS_TOO_MANY_REQUESTS, HTTP_STATUS_REQUEST_TIMEOUT, } = http2_1.constants; | ||
async function fetchWithRetry(url, options) { | ||
return (0, promise_retry_1.default)(async (retry, attemptNum) => { | ||
const method = options.method || 'POST'; | ||
const headers = { | ||
[HTTP2_HEADER_USER_AGENT]: util_1.ua.getUserAgent(), | ||
...options.headers, | ||
}; | ||
const response = await (0, make_fetch_happen_1.default)(url, { | ||
method, | ||
headers, | ||
body: options.body, | ||
timeout: options.timeout, | ||
retry: false, // We're handling retries ourselves | ||
}).catch((reason) => { | ||
proc_log_1.log.http('fetch', `${method} ${url} attempt ${attemptNum} failed with ${reason}`); | ||
return retry(reason); | ||
}); | ||
if (response.ok) { | ||
return response; | ||
} | ||
else { | ||
const error = await errorFromResponse(response); | ||
proc_log_1.log.http('fetch', `${method} ${url} attempt ${attemptNum} failed with ${response.status}`); | ||
if (retryable(response.status)) { | ||
return retry(error); | ||
} | ||
else { | ||
throw error; | ||
} | ||
} | ||
}, retryOpts(options.retry)); | ||
} | ||
exports.fetchWithRetry = fetchWithRetry; | ||
// Translate a Response into an HTTPError instance. This will attempt to parse | ||
// the response body for a message, but will default to the statusText if none | ||
// is found. | ||
const errorFromResponse = async (response) => { | ||
let message = response.statusText; | ||
const location = response.headers?.get(HTTP2_HEADER_LOCATION) || undefined; | ||
const contentType = response.headers?.get(HTTP2_HEADER_CONTENT_TYPE); | ||
// If response type is JSON, try to parse the body for a message | ||
if (contentType?.includes('application/json')) { | ||
try { | ||
const body = await response.json(); | ||
message = body.message || message; | ||
} | ||
catch (e) { | ||
// ignore | ||
} | ||
} | ||
return new error_1.HTTPError({ | ||
status: response.status, | ||
message: message, | ||
location: location, | ||
}); | ||
}; | ||
// Determine if a status code is retryable. This includes 5xx errors, 408, and | ||
// 429. | ||
const retryable = (status) => [HTTP_STATUS_REQUEST_TIMEOUT, HTTP_STATUS_TOO_MANY_REQUESTS].includes(status) || status >= HTTP_STATUS_INTERNAL_SERVER_ERROR; | ||
// Normalize the retry options to the format expected by promise-retry | ||
const retryOpts = (retry) => { | ||
if (typeof retry === 'boolean') { | ||
return { retries: retry ? 1 : 0 }; | ||
} | ||
else if (typeof retry === 'number') { | ||
return { retries: retry }; | ||
} | ||
else { | ||
return { retries: 0, ...retry }; | ||
} | ||
}; |
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