/// <summary>
/// Processes resources that can point to artifacts in S3.
/// </summary>
/// <param name="resource">The resource.</param>
/// <param name="templatePath">The template path.</param>
/// <param name="workingDirectory">The working directory.</param>
/// <returns><c>true</c> if the containing template should be modified (to point to S3); else <c>false</c></returns>
/// <exception cref="InvalidDataException">Unsupported derivative of FileSystemInfo</exception>
/// <exception cref="MissingMethodException">Missing constructor for the replacement template artifact.</exception>
private async Task <bool> ProcessResource(
IResource resource,
string templatePath,
string workingDirectory)
{
var templateModified = false;
foreach (var propertyToCheck in PackagedResources[resource.Type])
{
ResourceUploadSettings resourceToUpload;
// See if we have a lambda
var lambdaResource = new LambdaArtifact(this.pathResolver, resource, this.logger, this.platform, templatePath);
if (lambdaResource.ArtifactType != LambdaArtifactType.NotLambda)
{
// We do
using (var packager = LambdaPackager.CreatePackager(lambdaResource, this.s3Util, this.logger, this.platform))
{
resourceToUpload = await packager.Package(workingDirectory);
if (resourceToUpload == null)
{
// Lambda syntax does not imply a template modification
// i.e. it is inline code or already an S3 reference.
continue;
}
// The template will be altered to an S3 location,
// however the zip may or may not be uploaded.
templateModified = true;
}
}
else
{
string resourceFile;
try
{
resourceFile = (string)resource.GetResourcePropertyValue(propertyToCheck.PropertyPath);
}
catch (FormatException)
{
if (!propertyToCheck.Required)
{
// Property is missing, but CloudFormation does not require it.
continue;
}
throw;
}
if (resourceFile == null)
{
// Property was not found, or was not a value type.
continue;
}
var fsi = ResolveFileSystemResource(this.pathResolver, templatePath, resourceFile);
if (fsi == null)
{
// Property value did not resolve to a path in the file system
continue;
}
templateModified = true;
switch (fsi)
{
case FileInfo fi:
// Property value points to a file
resourceToUpload = await ArtifactPackager.PackageFile(
fi,
workingDirectory,
propertyToCheck.Zip,
this.s3Util,
this.logger);
break;
case DirectoryInfo di:
// Property value points to a directory, which must always be zipped.
resourceToUpload = await ArtifactPackager.PackageDirectory(
di,
workingDirectory,
this.s3Util,
this.logger);
break;
default:
// Should never get here, but shuts up a bunch of compiler/R# warnings
throw new InvalidDataException(
$"Unsupported derivative of FileSystemInfo: {fsi.GetType().FullName}");
}
}
if (!resourceToUpload.HashMatch)
{
resourceToUpload.KeyPrefix = this.s3Util.KeyPrefix;
resourceToUpload.Metadata = this.s3Util.Metadata;
await this.s3Util.UploadResourceToS3Async(resourceToUpload);
}
if (propertyToCheck.ReplacementType == typeof(string))
{
// Insert the URI directly
resource.UpdateResourceProperty(propertyToCheck.PropertyPath, resourceToUpload.S3Artifact.Url);
}
else
{
// Create an instance of the new mapping
// ReSharper disable once StyleCop.SA1305
var s3Location = propertyToCheck.ReplacementType.GetConstructor(new[] { typeof(S3Artifact) })
?.Invoke(new object[] { resourceToUpload.S3Artifact });
if (s3Location == null)
{
throw new MissingMethodException(propertyToCheck.ReplacementType.FullName, ".ctor(S3Artifact)");
}
// and set on the resource property
resource.UpdateResourceProperty(propertyToCheck.PropertyPath, s3Location);
}
}
return(templateModified);
}
/// <summary>
/// Package the artifact
/// </summary>
/// <param name="workingDirectory">Working directory to use for packaging</param>
/// <returns><see cref="ResourceUploadSettings"/>; else <c>null</c> if nothing to upload (hash sums match)</returns>
public async Task <ResourceUploadSettings> Package(string workingDirectory)
{
this.ValidateHandler();
// ReSharper disable once SwitchStatementHandlesSomeKnownEnumValuesWithDefault - Intentionally so, all other cases are effectively the default
switch (this.LambdaArtifact.ArtifactType)
{
case LambdaArtifactType.ZipFile:
// Already zipped
FileInfo lambdaFile = this.LambdaArtifact;
var resourceToUpload = new ResourceUploadSettings {
File = lambdaFile, Hash = lambdaFile.MD5()
};
await this.S3.ObjectChangedAsync(resourceToUpload);
// Template will always be modified, however the resource may not need upload.
return(resourceToUpload);
case LambdaArtifactType.Inline:
case LambdaArtifactType.FromS3:
// Template is unchanged if code is inline or already in S3
return(null);
default:
var dependencies = this.LambdaArtifact.LoadDependencies();
if (!dependencies.Any())
{
switch (this.LambdaArtifact.ArtifactType)
{
case LambdaArtifactType.CodeFile:
return(await ArtifactPackager.PackageFile(
this.LambdaArtifact,
workingDirectory,
true,
this.S3,
this.Logger));
case LambdaArtifactType.Directory:
return(await ArtifactPackager.PackageDirectory(
this.LambdaArtifact,
workingDirectory,
this.S3,
this.Logger));
}
}
// If we get here, there are dependencies to process
var packageDirectory = this.PreparePackage(workingDirectory);
return(await ArtifactPackager.PackageDirectory(
new DirectoryInfo(packageDirectory),
workingDirectory,
this.S3,
this.Logger));
}
}
