unleash-server/dist/lib/addons/addon.js

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

import ky from 'ky';
import { addonDefinitionSchema } from './addon-schema.js';
import { ADDON_EVENTS_HANDLED } from '../metric-events.js';
export default class Addon {
    constructor(definition, { getLogger, integrationEventsService, flagResolver, eventBus, }) {
        this.logger = getLogger(`addon/${definition.name}`);
        const { error } = addonDefinitionSchema.validate(definition);
        if (error) {
            this.logger.warn(`Could not load addon provider ${definition.name}`, error);
            throw error;
        }
        this._name = definition.name;
        this._definition = definition;
        this.integrationEventsService = integrationEventsService;
        this.eventBus = eventBus;
        this.flagResolver = flagResolver;
    }
    get name() {
        return this._name;
    }
    get definition() {
        return this._definition;
    }
    async fetchRetry(url, options = {}, retries = 1) {
        try {
            const res = await ky(url, {
                retry: retries,
                ...options,
            });
            return res;
        }
        catch (e) {
            const { method } = options;
            this.logger.warn(`Error querying ${url} with method ${method || 'GET'} status code ${e.code}`, e);
            return { status: e.code, ok: false };
        }
    }
    async registerEvent(integrationEvent) {
        await this.integrationEventsService.registerEvent(integrationEvent);
        this.eventBus.emit(ADDON_EVENTS_HANDLED, {
            result: integrationEvent.state,
            destination: this.name,
        });
    }
}
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