Utility function to check if an error is non-nil.

Check the status of a service by fetching the tasks and comparing task definitions and run state to see if tasks are running the same task definition revision that the service is associated with.

Read a task definition from JSON file and register it.

Create a connection object for ECS service work.

Fetch ELB data .

List the user-visible clusters and their service names.

Takes a list of ELB names, retrieves their details and prints.

Little utility function since we print separators in a few places.

Fetches and prints the information about the services.

Print information about the tasks associated with the specific service.

Function to print the details of a service's task definition, since it's got a lot of fiddly details.

Print the task definitions .

Run a task - runs 1 instance of the specified task.

Update a service by specifying a new image URL, which will register a new task definition revision and update the service, meaning the service instances are restarted.

TaskDefn is a struct defining the layout of the Task Definition JSON file.