error handling on the workers

error-handling-workers.js

onContainerDataSaved = function (container) {
  let networkData
  try {
    networkData = network.fetchNetworkData()
    network.attachContainerToNetwork(networkData, container)
    websockets.sendErrorToClients("Cannot attach container to the network")
  } catch (err) {
    if (err instanceof NetworkAttachError) {
      messageBus.emit('network.attach.failed', { container, networkData })
    }
  }
}

// we can set in configuration the retry policy for such worker: exponential back-off, timeout, max number of retries etc,  
onNetworkAttachFailed = function (container, networkData) {
  docker.removeContainer(container)
}