44 lines
1.5 KiB
JavaScript
44 lines
1.5 KiB
JavaScript
'use strict';
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const MongoNetworkError = require('mongodb-core').MongoNetworkError;
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const mongoErrorContextSymbol = require('mongodb-core').mongoErrorContextSymbol;
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const GET_MORE_NON_RESUMABLE_CODES = new Set([
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136, // CappedPositionLost
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237, // CursorKilled
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11601 // Interrupted
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]);
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// From spec@https://github.com/mongodb/specifications/blob/35e466ddf25059cb30e4113de71cdebd3754657f/source/change-streams.rst#resumable-error:
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//
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// An error is considered resumable if it meets any of the following criteria:
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// - any error encountered which is not a server error (e.g. a timeout error or network error)
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// - any server error response from a getMore command excluding those containing the following error codes
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// - Interrupted: 11601
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// - CappedPositionLost: 136
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// - CursorKilled: 237
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// - a server error response with an error message containing the substring "not master" or "node is recovering"
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//
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// An error on an aggregate command is not a resumable error. Only errors on a getMore command may be considered resumable errors.
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function isGetMoreError(error) {
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if (error[mongoErrorContextSymbol]) {
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return error[mongoErrorContextSymbol].isGetMore;
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}
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}
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function isResumableError(error) {
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if (!isGetMoreError(error)) {
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return false;
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}
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return !!(
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error instanceof MongoNetworkError ||
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!GET_MORE_NON_RESUMABLE_CODES.has(error.code) ||
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error.message.match(/not master/) ||
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error.message.match(/node is recovering/)
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);
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}
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module.exports = { GET_MORE_NON_RESUMABLE_CODES, isResumableError };
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