private static Set groupInstancesByTargets()

in aws-cloudformation-stackset/src/main/java/software/amazon/cloudformation/stackset/util/InstancesAnalyzer.java [54:83]

27 lines of code
4 McCabe index (conditional complexity)


    private static Set<StackInstances> groupInstancesByTargets(
            final Set<StackInstance> flatStackInstances, final boolean isSelfManaged) {

        final Map<List<Object>, StackInstances> groupedStacksMap = new HashMap<>();
        for (final StackInstance stackInstance : flatStackInstances) {
            final String target = stackInstance.getDeploymentTarget();
            final String region = stackInstance.getRegion();
            final Set<Parameter> parameterSet = stackInstance.getParameters();
            final List<Object> compositeKey = Arrays.asList(target, parameterSet);

            if (groupedStacksMap.containsKey(compositeKey)) {
                groupedStacksMap.get(compositeKey).getRegions().add(stackInstance.getRegion());
            } else {
                final DeploymentTargets targets = DeploymentTargets.builder().build();
                if (isSelfManaged) {
                    targets.setAccounts(new HashSet<>(Arrays.asList(target)));
                } else {
                    targets.setOrganizationalUnitIds(new HashSet<>(Arrays.asList(target)));
                }

                final StackInstances stackInstances = StackInstances.builder()
                        .regions(new HashSet<>(Arrays.asList(region)))
                        .deploymentTargets(targets)
                        .parameterOverrides(parameterSet)
                        .build();
                groupedStacksMap.put(compositeKey, stackInstances);
            }
        }
        return new HashSet<>(groupedStacksMap.values());
    }