@nestjs/mongoose/dist/common/mongoose.utils.js

Nest - modern, fast, powerful node.js web framework (@mongoose)

import { Logger } from '@nestjs/common';
import { delay, retryWhen, scan } from 'rxjs/operators';
import { DEFAULT_DB_CONNECTION } from '../mongoose.constants.js';
export function getModelToken(model, connectionName) {
    if (connectionName === undefined) {
        return `${model}Model`;
    }
    return `${getConnectionToken(connectionName)}/${model}Model`;
}
export function getConnectionToken(name) {
    return name && name !== DEFAULT_DB_CONNECTION
        ? `${name}Connection`
        : DEFAULT_DB_CONNECTION;
}
export function handleRetry(retryAttempts = 9, retryDelay = 3000, verboseRetryLog = false) {
    const logger = new Logger('MongooseModule');
    return (source) => source.pipe(retryWhen((e) => e.pipe(scan((errorCount, error) => {
        const verboseMessage = verboseRetryLog
            ? ` Message: ${error.message}.`
            : '';
        const retryMessage = retryAttempts > 0 ? ` Retrying (${errorCount + 1})...` : '';
        logger.error([
            'Unable to connect to the database.',
            verboseMessage,
            retryMessage,
        ].join(''), error.stack);
        if (errorCount + 1 >= retryAttempts) {
            throw error;
        }
        return errorCount + 1;
    }, 0), delay(retryDelay))));
}
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