unleash-server/dist/lib/addons/new-relic.js

Unleash is an enterprise ready feature flag service. It provides different strategies for handling feature flags.

import Addon from './addon.js';
import definition from './new-relic-definition.js';
import Mustache from 'mustache';
import { serializeDates, } from '../types/index.js';
import { FeatureEventFormatterMd, } from './feature-event-formatter-md.js';
import { gzip } from 'node:zlib';
import { promisify } from 'util';
const asyncGzip = promisify(gzip);
export default class NewRelicAddon extends Addon {
    constructor(config) {
        super(definition, config);
        this.msgFormatter = new FeatureEventFormatterMd({
            unleashUrl: config.unleashUrl,
        });
        this.flagResolver = config.flagResolver;
    }
    async handleEvent(event, parameters, integrationId) {
        let state = 'success';
        const stateDetails = [];
        const { url, licenseKey, customHeaders, bodyTemplate } = parameters;
        const context = {
            event,
        };
        let text;
        if (typeof bodyTemplate === 'string' && bodyTemplate.length > 1) {
            text = Mustache.render(bodyTemplate, context);
        }
        else {
            text = `%%% \n ${this.msgFormatter.format(event).text} \n %%% `;
        }
        const body = {
            eventType: 'UnleashServiceEvent',
            unleashEventType: event.type,
            featureName: event.featureName,
            environment: event.environment,
            createdBy: event.createdBy,
            createdByUserId: event.createdByUserId,
            createdAt: event.createdAt.getTime(),
            ...event.data,
        };
        let extraHeaders = {};
        if (typeof customHeaders === 'string' && customHeaders.length > 1) {
            try {
                extraHeaders = JSON.parse(customHeaders);
            }
            catch (e) {
                state = 'successWithErrors';
                const badHeadersMessage = 'Could not parse the JSON in the customHeaders parameter.';
                stateDetails.push(badHeadersMessage);
                this.logger.warn(badHeadersMessage);
            }
        }
        const requestOpts = {
            method: 'POST',
            headers: {
                'Api-Key': licenseKey,
                'Content-Type': 'application/json',
                'Content-Encoding': 'gzip',
                ...extraHeaders,
            },
            body: await asyncGzip(JSON.stringify(body)),
        };
        const res = await this.fetchRetry(url, requestOpts);
        this.logger.info(`Handled event "${event.type}".`);
        if (res.ok) {
            const successMessage = `New Relic Events API request was successful with status code: ${res.status}.`;
            stateDetails.push(successMessage);
            this.logger.info(successMessage);
        }
        else {
            state = 'failed';
            const failedMessage = `New Relic Events API request failed with status code: ${res.status}.`;
            stateDetails.push(failedMessage);
            this.logger.warn(failedMessage);
        }
        this.registerEvent({
            integrationId,
            state,
            stateDetails: stateDetails.join('\n'),
            event: serializeDates(event),
            details: {
                url,
                body,
            },
        });
    }
}
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