/// <summary>
/// Creates a <see cref="SmartDetectorPackage"/> from a zipped package stream
/// </summary>
/// <param name="zippedPackageStream">The zipped package stream</param>
/// <param name="tracer">The tracer</param>
/// <returns>A <see cref="SmartDetectorPackage"/></returns>
public static SmartDetectorPackage CreateFromStream(Stream zippedPackageStream, ITracer tracer)
{
var packageContent = new Dictionary <string, byte[]>(StringComparer.OrdinalIgnoreCase);
using (var archive = new ZipArchive(zippedPackageStream, ZipArchiveMode.Read))
{
// for each file in the package get the file name and content and add it to the result dictionary
foreach (ZipArchiveEntry entry in archive.Entries)
{
Stream entryStream = entry.Open();
using (var entryMemoryStream = new MemoryStream())
{
entryStream.CopyTo(entryMemoryStream);
byte[] entryBytes = entryMemoryStream.ToArray();
packageContent.Add(entry.FullName, entryBytes);
}
}
}
bool manifestFileExists = packageContent.TryGetValue(ManifestFileName, out byte[] manifestBytes);
if (!manifestFileExists)
{
throw new InvalidSmartDetectorPackageException("No manifest file found in the Smart Detector package");
}
// Deserialize the manifest. We use stream reader to avoid unexpected characters such as BOM.
using (var stream = new StreamReader(new MemoryStream(manifestBytes)))
{
string manifest = stream.ReadToEnd();
tracer.TraceInformation($"Deserializing Smart Detector manifest {manifest}");
SmartDetectorManifest smartDetectorManifest = JsonConvert.DeserializeObject <SmartDetectorManifest>(manifest);
return(new SmartDetectorPackage(smartDetectorManifest, packageContent));
}
}
/// <summary>
/// Creates a <see cref="SmartDetectorPackage"/> from a folder
/// </summary>
/// <param name="sourceFolder">The folder of the package</param>
/// <returns>A <see cref="SmartDetectorPackage"/></returns>
public static SmartDetectorPackage CreateFromFolder(string sourceFolder)
{
string[] fileEntries = Directory.GetFiles(sourceFolder);
var packageContent = new Dictionary <string, byte[]>(StringComparer.OrdinalIgnoreCase);
// for each file in the package get the file name and content and add it to the result dictionary
foreach (string fileNamePath in fileEntries)
{
packageContent.Add(Path.GetFileName(fileNamePath), File.ReadAllBytes(fileNamePath));
}
bool manifestFileExists = packageContent.TryGetValue(ManifestFileName, out byte[] manifestBytes);
if (!manifestFileExists)
{
throw new InvalidSmartDetectorPackageException("Failed to create Smart Detector Package - no manifest file found in the Smart Detector package");
}
try
{
// Validates the manifest. We use stream reader to avoid unexpected characters such as BOM.
using (var stream = new StreamReader(new MemoryStream(manifestBytes)))
{
string manifest = stream.ReadToEnd();
SmartDetectorManifest smartDetectorManifest = JsonConvert.DeserializeObject <SmartDetectorManifest>(manifest);
if (!packageContent.ContainsKey(smartDetectorManifest.AssemblyName))
{
throw new InvalidSmartDetectorPackageException("Failed to create Smart Detector Package - the manifest file is invalid: Assembly name must be a file in the Smart Detector package.");
}
if (!smartDetectorManifest.SupportedResourceTypes.Any())
{
throw new InvalidSmartDetectorPackageException("Failed to create Smart Detector Package - the manifest file is invalid: Must specify at least one supported resource type.");
}
if (!smartDetectorManifest.SupportedCadencesInMinutes.Any())
{
throw new InvalidSmartDetectorPackageException("Failed to create Smart Detector Package - the manifest file is invalid: Must specify at least one supported cadence.");
}
return(new SmartDetectorPackage(smartDetectorManifest, packageContent));
}
}
catch (ArgumentException argumentException)
{
throw new InvalidSmartDetectorPackageException($"Failed to create Smart Detector Package - the manifest file is invalid: {argumentException.Message}");
}
catch (JsonException jsonException)
{
throw new InvalidSmartDetectorPackageException($"Failed to create Smart Detector Package - the manifest file is invalid: {jsonException.Message}");
}
}
/// <summary>
/// Checks that the content of the package is valid
/// </summary>
/// <param name="smartDetectorManifest">The Smart Detector's manifest</param>
/// <param name="packageContent">The Smart Detector package content represented by a dictionary mapping a file name to the file content bytes</param>
private static void ValidatePackage(SmartDetectorManifest smartDetectorManifest, IReadOnlyDictionary <string, byte[]> packageContent)
{
if (!(packageContent.ContainsKey(smartDetectorManifest.AssemblyName) ||
packageContent.ContainsKey(smartDetectorManifest.AssemblyName + ".dll") ||
packageContent.ContainsKey(smartDetectorManifest.AssemblyName + ".exe")))
{
throw new InvalidSmartDetectorPackageException("Failed to create Smart Detector Package - the manifest file is invalid: Assembly name must be a file in the Smart Detector package.");
}
if (smartDetectorManifest.SupportedResourceTypes == null || !smartDetectorManifest.SupportedResourceTypes.Any())
{
throw new InvalidSmartDetectorPackageException("Failed to create Smart Detector Package - the manifest file is invalid: Must specify at least one supported resource type.");
}
if (smartDetectorManifest.SupportedCadencesInMinutes == null || !smartDetectorManifest.SupportedCadencesInMinutes.Any())
{
throw new InvalidSmartDetectorPackageException("Failed to create Smart Detector Package - the manifest file is invalid: Must specify at least one supported cadence.");
}
if (smartDetectorManifest.ImagePaths != null)
{
foreach (var imagePath in smartDetectorManifest.ImagePaths)
{
string path = imagePath.Replace("/", "\\");
if (!packageContent.ContainsKey(path))
{
throw new InvalidSmartDetectorPackageException($"Failed to create Smart Detector Package - the image file {imagePath} defined in the manifest file does not exists");
}
}
}
if (smartDetectorManifest.ParametersDefinitions != null)
{
foreach (DetectorParameterDefinition parameterDefinition in smartDetectorManifest.ParametersDefinitions)
{
if (string.IsNullOrEmpty(parameterDefinition.Name))
{
throw new InvalidSmartDetectorPackageException("Failed to create Smart Detector Package - got parameter definition with no name");
}
if (string.IsNullOrEmpty(parameterDefinition.DisplayName))
{
throw new InvalidSmartDetectorPackageException($"Failed to create Smart Detector Package - parameter definition '{parameterDefinition.Name}' has no display name");
}
}
}
}
/// <summary>
/// Initializes a new instance of the <see cref="SmartDetectorPackage"/> class.
/// </summary>
/// <param name="packageContent">The Smart Detector package content represented by a dictionary mapping a file name to the file content bytes</param>
public SmartDetectorPackage(IReadOnlyDictionary <string, byte[]> packageContent)
{
if (packageContent == null)
{
throw new ArgumentNullException(nameof(packageContent));
}
else if (packageContent.Count == 0)
{
throw new ArgumentException("Package content must include at least one item", nameof(packageContent));
}
SmartDetectorManifest smartDetectorManifest = ReadManifestFromPackageContent(packageContent);
ValidatePackage(smartDetectorManifest, packageContent);
this.Manifest = smartDetectorManifest;
this.Content = packageContent;
}
/// <summary>
/// Initializes a new instance of the <see cref="SmartDetectorPackage"/> class.
/// </summary>
/// <param name="manifest">The Smart Detector's manifest</param>
/// <param name="content">The Smart Detector package content represented by a dictionary mapping a file name to the file content bytes</param>
public SmartDetectorPackage(SmartDetectorManifest manifest, IReadOnlyDictionary <string, byte[]> content)
{
if (manifest == null)
{
throw new ArgumentNullException(nameof(manifest));
}
if (content == null)
{
throw new ArgumentNullException(nameof(content));
}
else if (content.Count == 0)
{
throw new ArgumentException("Package content must include at least one item", nameof(content));
}
this.Manifest = manifest;
this.Content = content;
}
/// <summary>
/// Creates a <see cref="SmartDetectorPackage"/> from a folder
/// </summary>
/// <param name="sourceFolder">The folder of the package</param>
/// <returns>A <see cref="SmartDetectorPackage"/></returns>
public static SmartDetectorPackage CreateFromFolder(string sourceFolder)
{
string[] fileEntries = Directory.GetFiles(sourceFolder, "*", SearchOption.AllDirectories);
var packageContent = new Dictionary <string, byte[]>(StringComparer.OrdinalIgnoreCase);
// for each file in the package get the file relative path and content and add it to the result dictionary
foreach (string filePath in fileEntries)
{
string relativePath = filePath.Substring(sourceFolder.Length).TrimStart('\\');
if (Path.GetExtension(relativePath) != ".package")
{
packageContent.Add(relativePath, File.ReadAllBytes(filePath));
}
}
bool manifestFileExists = packageContent.TryGetValue(ManifestFileName, out byte[] manifestBytes);
if (!manifestFileExists)
{
throw new InvalidSmartDetectorPackageException("Failed to create Smart Detector Package - no manifest file found in the Smart Detector package");
}
try
{
// Validates the manifest. We use stream reader to avoid unexpected characters such as BOM.
using (var stream = new StreamReader(new MemoryStream(manifestBytes)))
{
string manifest = stream.ReadToEnd();
SmartDetectorManifest smartDetectorManifest = JsonConvert.DeserializeObject <SmartDetectorManifest>(manifest);
if (!packageContent.ContainsKey(smartDetectorManifest.AssemblyName))
{
throw new InvalidSmartDetectorPackageException("Failed to create Smart Detector Package - the manifest file is invalid: Assembly name must be a file in the Smart Detector package.");
}
if (smartDetectorManifest.SupportedResourceTypes == null || !smartDetectorManifest.SupportedResourceTypes.Any())
{
throw new InvalidSmartDetectorPackageException("Failed to create Smart Detector Package - the manifest file is invalid: Must specify at least one supported resource type.");
}
if (smartDetectorManifest.SupportedCadencesInMinutes == null || !smartDetectorManifest.SupportedCadencesInMinutes.Any())
{
throw new InvalidSmartDetectorPackageException("Failed to create Smart Detector Package - the manifest file is invalid: Must specify at least one supported cadence.");
}
if (smartDetectorManifest.ImagePaths != null && smartDetectorManifest.ImagePaths.Any())
{
foreach (var imagePath in smartDetectorManifest.ImagePaths)
{
string path = imagePath.Replace("/", "\\");
if (!packageContent.ContainsKey(path))
{
throw new InvalidSmartDetectorPackageException($"Failed to create Smart Detector Package - The image file {imagePath} defined in the manifest file does not exists");
}
}
}
var assembly = Assembly.LoadFrom(Path.Combine(sourceFolder, smartDetectorManifest.AssemblyName));
if (assembly.GetType(smartDetectorManifest.ClassName) == null)
{
throw new InvalidSmartDetectorPackageException(
"Failed to create Smart Detector Package - the manifest file is invalid: The class name must be a file in the Smart Detector package.");
}
return(new SmartDetectorPackage(smartDetectorManifest, packageContent));
}
}
catch (ArgumentException argumentException)
{
throw new InvalidSmartDetectorPackageException($"Failed to create Smart Detector Package - the manifest file is invalid: {argumentException.Message}");
}
catch (JsonException jsonException)
{
throw new InvalidSmartDetectorPackageException($"Failed to create Smart Detector Package - the manifest file is invalid: {jsonException.Message}");
}
}
