func()

in lib/ec2macosinit/module.go [139:187]

• 30 lines of code
• 13 McCabe index (conditional complexity)

func (m *Module) ShouldRun(instanceID string, history []History) (shouldRun bool) {
	// RunPerBoot runs every time
	if m.RunPerBoot {
		return true
	}

	// The rest will use the history key
	key := m.generateHistoryKey()

	// RunPerInstance only runs if the module's key doesn't exist in the current instance history and has
	// not run successfully.
	if m.RunPerInstance {
		// Check each instance in the instance history
		for _, instance := range history {
			if instanceID == instance.InstanceID {
				// If the current instance matches an ID in the history, check every module history for that instance
				for _, moduleHistory := range instance.ModuleHistories {
					if key == moduleHistory.Key && moduleHistory.Success {
						// If there is a matching key and it completed successfully, it doesn't need to be run
						return false
					}
				}
				// If there is an instance that matches and no keys match, run the module
				return true
			}
		}
		// If no instances match the instance history, run the module
		return true
	}

	// RunOnce only runs if the module's key doesn't exist in any instance history
	if m.RunOnce {
		for _, instance := range history {
			// Check every module history for that instance
			for _, moduleHistory := range instance.ModuleHistories {
				if key == moduleHistory.Key && moduleHistory.Success {
					// If there is a matching key and it completed successfully, it doesn't need to be run
					return false
				}
			}
		}
		// If no instances match the instance history, run the module
		return true
	}

	// Default here is false, though this position should never be reached. Preference is to not run actions which
	// may be potentially mutating but are misconfigured.
	return false
}