@kumologica/builder/src/validator/index.js

Kumologica build and deploy module

const chalk = require('chalk');

/**
 * sample events:
 * https://docs.aws.amazon.com/lambda/latest/dg/lambda-services.html
 */
class FlowValidator {

	constructor(log) {
		if (log) {
			this.logger = log;
		}
	}

	log(text, calog = true) {
		if (this.logger) {
			this.logger(text, calog);
		} else {
			console.log(text);
		}
	}

    validate(flow, provider) {
        this.log("Validating flow");

        this.validateListener(flow, provider);
    
        switch(provider) {
            case "kumohub": 
                const KumohubFlowValidator = require('./KumohubFlowValidator');
                const khValidator = new KumohubFlowValidator(this.logger);
                khValidator.validate(flow);
                break;
            case "azure": 
                const AzureFlowValidator = require('./AzureFlowValidator');
                const azValidator = new AzureFlowValidator(this.logger);
                azValidator.validate(flow);
                break;
            case "aws": 
                const AWSFlowValidator = require('./AWSFlowValidator');
                const awsValidator = new AWSFlowValidator(this.logger);
                awsValidator.validate(flow);
                break;
        }
    }

    validateListener(flow, provider) {
        const listener = flow.filter(i => i.type === "EventListener" && i.provider === provider);
        if (!listener || listener.length == 0) {
            throw new Error(`Error: Flow has no ${provider} EventListener defined.`);
        } 

        const nonProviderlisteners = flow.filter(i => i.type == "EventListener" && i.provider != provider);
        if (nonProviderlisteners && nonProviderlisteners.length > 0) {
          const names = nonProviderlisteners.map(l => l.name).concat();
          this.log(`${chalk.yellowBright(`Warning (Invalid provider): Non ${provider} Event Listeners found: [${names}] for ${provider} deployment.`)}`);
        }
    }
}

module.exports = FlowValidator;