/// <summary>
/// Generates an installation plan
/// </summary>
/// <param name="productPackages">Current product</param>
/// <param name="packages">Packages to install</param>
/// <returns><see cref="InstallationPlan" /></returns>
public async Task <InstallationPlan> PlanInstallation(IPackageGraph productPackages, ICollection <PackageId> packages)
{
var plan = new InstallationPlan();
var resolvedPackagesDictionary = new Dictionary <PackageId, DeploymentPackageInfo>();
var resolvedPackages = await NuGetEngine.ResolvePackages(packages);
NuGetEngine.AnalyzePackages(resolvedPackages);
var graphBuilder = new PackageGraphBuilder();
foreach (var innerNode in resolvedPackages.InnerNodes)
{
TranslateNuGetGraphNode(innerNode, graphBuilder, resolvedPackagesDictionary);
}
plan.TargetPackageGraph = graphBuilder.Build();
var resolvedPackagesList = plan.TargetPackageGraph.FlattenMostDependentFirst();
var productPackagesList = productPackages.FlattenMostDependentFirst();
var deploymentActions = new List <DeploymentAction>();
foreach (var packageId in resolvedPackagesList)
{
var packageMatch = productPackagesList.FirstOrDefault(x => x.Id == packageId.Id);
var isUpdate = (packageMatch != null) && (packageMatch.Version != packageId.Version);
var install = (packageMatch == null) || isUpdate;
if (isUpdate)
{
deploymentActions.Add(new DeletePackageAction(DeploymentContext, true, packageMatch));
plan.UpdateCount++;
}
if (install)
{
var packageInfo = resolvedPackagesDictionary[packageId];
deploymentActions.Add(new DownloadPackageAction(DeploymentContext, isUpdate,
packageInfo, NuGetEngine, PackagesFolderPath));
deploymentActions.Add(new InstallPackageAction(DeploymentContext, isUpdate, packageInfo,
DeploymentStrategyProvider));
if (!isUpdate)
{
plan.InstallCount++;
}
}
else
{
plan.RemainingPackages.Add(packageId);
}
}
plan.Actions = deploymentActions.Where(x => x is DownloadPackageAction)
.Concat(deploymentActions.Where(x => x is DeletePackageAction))
.Concat(deploymentActions.Where(x => x is InstallPackageAction))
.ToList();
return(plan);
}
protected virtual async Task OnResolvePackages()
{
MergeWithProductPackages();
var resolvedPackages = await NuGetEngine.ResolvePackages(WorkflowContext.InputPackages);
NuGetEngine.AnalysePackages(resolvedPackages);
foreach (var innerNode in resolvedPackages.InnerNodes)
{
FlattenPackageNode(innerNode, null);
}
while (WorkflowContext.FlatteningCache.Any())
{
var nextNode = WorkflowContext.FlatteningCache.Dequeue();
FlattenPackageNode(nextNode.Item1, nextNode.Item2);
}
PrepareInstallationAndDeletionLists();
}
