/// <summary>
/// Checks if a given dependecy is satisfied or not
/// </summary>
/// <param name="dependency">The dependency to check</param>
/// <returns>Whether the dependencies is satisfied</returns>
public async Task <bool> Check(Dependency dependency)
{
var version = await repository.GetPackageVersion(dependency.Package);
if (version == null)
{
return(false);
}
if (version == dependency.Version || (version > dependency.Version && dependency.GreaterAllowed))
{
return(true);
}
return(false);
}
/// <summary>
/// Installs a package
/// </summary>
/// <param name="package">The package to install</param>
public async Task Install(Package package)
{
// Check dependencies
var checkDependencyService = container.Resolve <ICheckDependencyService>();
var checkDependenciesResult = await checkDependencyService.CheckDependencies(package.Dependencies);
if (checkDependenciesResult.LogLevel != LogLevel.Error)
{
await logService.WriteAsync(checkDependenciesResult.Message, checkDependenciesResult.LogLevel);
}
else
{
throw new MissingDependencyException(checkDependenciesResult.Message);
}
// Check if package already exists and act accordingly
var existingPackageVersion = await packageTrackingRepository.GetPackageVersion(package.Guid);
if (package.Version == existingPackageVersion)
{
throw new ExistingPackageException($"The version {existingPackageVersion}" +
$" of this package is already installed.");
}
else if (package.Version < existingPackageVersion)
{
await logService.WriteAsync($"A later version ({existingPackageVersion}) " +
$"of {package.Name} is already installed.", LogLevel.Info);
throw new ExistingPackageException($"A later version ({existingPackageVersion})" +
$" of this package is already installed.");
}
await logService.WriteAsync($"Found no installation of version {package.Version} of this package. " +
$"Proceeding to install package.", LogLevel.Info);
// Load extensions.
if (package.Extensions.Any())
{
await logService.WriteAsync("Loading extensions...", LogLevel.Info);
extensionService.LoadExtensions(package.Extensions);
if (package.Extensions.Any(x => !ExtensionHelper.LoadedExtensions.Contains(x)))
{
await logService.WriteAsync("Could not load all extensions", LogLevel.Error);
throw new MissingExtensionException($"Could not load " +
$"{package.Extensions.First(x => !ExtensionHelper.LoadedExtensions.Contains(x))}");
}
}
// Install the objects
foreach (var item in package.UnpackedObjects)
{
var installObjectService = container.Resolve <IInstallObjectService>(item.Key); // TODO: Exception handeling ?
// Request values.
try
{
var requestValueService = container.Resolve <IRequestValueService>(item.Key);
if (requestValueService != null)
{
var res = requestValueService.RequestValue(item.Value);
if (!res.Success)
{
await logService.WriteAsync($"Could not request all values for {item.Key}", LogLevel.Error);
}
}
}
catch (ResolutionFailedException)
{
// pass (no value request service registered).
}
catch (Exception ex)
{
await logService.WriteAsync($"Error while requestion value for {item.Key}", LogLevel.Error, ex);
throw;
}
// Installation of all objects.
foreach (var installableObject in item.Value)
{
var install = installableObject.Mode == InstallMode.Deploy;
if (installableObject.Mode == InstallMode.Migrate)
{
var checkMigrationResult = await migrationService.CheckMigration(installableObject);
install = checkMigrationResult.CanMigrate;
await logService.WriteAsync(checkMigrationResult.Message, checkMigrationResult.LogLevel);
}
if (install)
{
var installObjectResult = await installObjectService.InstallObject(installableObject);
if (!installObjectResult.Success)
{
throw new InvalidObjectException();
}
}
}
}
// Add to InstalledPackages in database
var success = await packageTrackingRepository.AddPackgageVersion(package);
if (success)
{
await logService.WriteAsync($"Wrote package with name {package.Name} " +
$"and version {package.Version} to installed packages table", LogLevel.Info);
}
else
{
await logService.WriteAsync($"Failed to write package with name {package.Name}" +
$" and version {package.Version} to installed packages table.", LogLevel.Error);
}
}
