Method update

packages/serverless/lib/plugins/aws/dev/index.js:567–721

* Updates the serverless service configuration with dev mode config needed for the shim to work. Specifically: * 1. Update all AWS Lambda functions' IAM roles to allow all IoT actions. * 2. Update all AWS Lambad function's handler to 'index.handler' as set in the shim * 3. Update all

()

   * @throws {Error} Throws an error if retrieving the IoT endpoint fails.
   */
  async update() {
    logger.debug('Updating service configuration for dev mode')
    // Makes sure we don't mutate the original IAM configuration
    this.originalIamConfig = _.cloneDeep(this.serverless.service.provider.iam)

    // Makes sure we support the old iam role statements syntax
    const oldIamRoleStatements = _.get(
      this.serverless.service.provider,
      'iamRoleStatements',
      [],
    )

    // Makes sure we support the new iam role statements syntax
    const newIamRoleStatements = _.get(
      this.serverless.service.provider,
      'iam.role.statements',
      [],
    )

    // Makes sure we don't overwrite existing IAM configurations
    const iamRoleStatements = [...oldIamRoleStatements, ...newIamRoleStatements]

    iamRoleStatements.push({
      Effect: 'Allow',
      Action: ['iot:*'],
      Resource: '*',
    })

    _.set(
      this.serverless.service.provider,
      'iam.role.statements',
      iamRoleStatements,
    )

    // The IoT endpoint is fetched and passed to the lambda function as env var to be used by the shim
    const iotEndpoint = await this.getIotEndpoint()
    const serviceName = this.serverless.service.getServiceName()
    const stageName = this.serverless.getProvider('aws').getStage()
    const localRuntimeVersion = process.version.split('.')[0].replace('v', '')
    const localRuntime = `nodejs${localRuntimeVersion}.x`
    const runtimeForShim = AWS_LAMBDA_SUPPORTED_NODE_RUNTIMES.includes(
      localRuntime,
    )
      ? localRuntime
      : 'nodejs20.x'
    let atLeastOneRuntimeVersionMismatch = false

    if (runtimeForShim !== localRuntime) {
      logger.warning(
        `Your local machine is using Node.js v${localRuntimeVersion}, which is not yet supported by AWS Lambda. Falling back to ${runtimeForShim} for dev mode deployment.`,
      )
    }

    const allFunctions = this.serverless.service.getAllFunctions()

    const notNodeFunction = allFunctions.find((functionName) => {
      const functionConfig = this.serverless.service.getFunction(functionName)