open-next-cdk
Version:
Deploy a NextJS app using OpenNext packaging to serverless AWS using CDK
71 lines (70 loc) • 3.28 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.StandardRetryStrategy = void 0;
const config_1 = require("./config");
const constants_1 = require("./constants");
const defaultRetryBackoffStrategy_1 = require("./defaultRetryBackoffStrategy");
const defaultRetryToken_1 = require("./defaultRetryToken");
class StandardRetryStrategy {
constructor(maxAttempts) {
this.maxAttempts = maxAttempts;
this.mode = config_1.RETRY_MODES.STANDARD;
this.capacity = constants_1.INITIAL_RETRY_TOKENS;
this.retryBackoffStrategy = (0, defaultRetryBackoffStrategy_1.getDefaultRetryBackoffStrategy)();
this.maxAttemptsProvider = typeof maxAttempts === "function" ? maxAttempts : async () => maxAttempts;
}
async acquireInitialRetryToken(retryTokenScope) {
return (0, defaultRetryToken_1.createDefaultRetryToken)({
retryDelay: constants_1.DEFAULT_RETRY_DELAY_BASE,
retryCount: 0,
});
}
async refreshRetryTokenForRetry(token, errorInfo) {
const maxAttempts = await this.getMaxAttempts();
if (this.shouldRetry(token, errorInfo, maxAttempts)) {
const errorType = errorInfo.errorType;
this.retryBackoffStrategy.setDelayBase(errorType === "THROTTLING" ? constants_1.THROTTLING_RETRY_DELAY_BASE : constants_1.DEFAULT_RETRY_DELAY_BASE);
const delayFromErrorType = this.retryBackoffStrategy.computeNextBackoffDelay(token.getRetryCount());
const retryDelay = errorInfo.retryAfterHint
? Math.max(errorInfo.retryAfterHint.getTime() - Date.now() || 0, delayFromErrorType)
: delayFromErrorType;
const capacityCost = this.getCapacityCost(errorType);
this.capacity -= capacityCost;
return (0, defaultRetryToken_1.createDefaultRetryToken)({
retryDelay,
retryCount: token.getRetryCount() + 1,
retryCost: capacityCost,
});
}
throw new Error("No retry token available");
}
recordSuccess(token) {
var _a;
this.capacity = Math.max(constants_1.INITIAL_RETRY_TOKENS, this.capacity + ((_a = token.getRetryCost()) !== null && _a !== void 0 ? _a : constants_1.NO_RETRY_INCREMENT));
}
getCapacity() {
return this.capacity;
}
async getMaxAttempts() {
try {
return await this.maxAttemptsProvider();
}
catch (error) {
console.warn(`Max attempts provider could not resolve. Using default of ${config_1.DEFAULT_MAX_ATTEMPTS}`);
return config_1.DEFAULT_MAX_ATTEMPTS;
}
}
shouldRetry(tokenToRenew, errorInfo, maxAttempts) {
const attempts = tokenToRenew.getRetryCount() + 1;
return (attempts < maxAttempts &&
this.capacity >= this.getCapacityCost(errorInfo.errorType) &&
this.isRetryableError(errorInfo.errorType));
}
getCapacityCost(errorType) {
return errorType === "TRANSIENT" ? constants_1.TIMEOUT_RETRY_COST : constants_1.RETRY_COST;
}
isRetryableError(errorType) {
return errorType === "THROTTLING" || errorType === "TRANSIENT";
}
}
exports.StandardRetryStrategy = StandardRetryStrategy;