/// <summary>
/// Parses sleet.json to find the source and constructs it.
/// </summary>
public static async Task <ISleetFileSystem> CreateFileSystemAsync(LocalSettings settings, LocalCache cache, string source)
{
ISleetFileSystem result = null;
var sources = settings.Json["sources"] as JArray;
if (sources == null)
{
throw new ArgumentException("Invalid config. No sources found.");
}
foreach (var sourceEntry in sources.Select(e => (JObject)e))
{
var sourceName = JsonUtility.GetValueCaseInsensitive(sourceEntry, "name");
if (source.Equals(sourceName, StringComparison.OrdinalIgnoreCase))
{
var path = JsonUtility.GetValueCaseInsensitive(sourceEntry, "path");
var baseURIString = JsonUtility.GetValueCaseInsensitive(sourceEntry, "baseURI");
var feedSubPath = JsonUtility.GetValueCaseInsensitive(sourceEntry, "feedSubPath");
var type = JsonUtility.GetValueCaseInsensitive(sourceEntry, "type")?.ToLowerInvariant();
string absolutePath;
if (path != null && type == "local")
{
if (settings.Path == null && !Path.IsPathRooted(NuGetUriUtility.GetLocalPath(path)))
{
throw new ArgumentException("Cannot use a relative 'path' without a sleet.json file.");
}
var nonEmptyPath = path == "" ? "." : path;
var absoluteSettingsPath = NuGetUriUtility.GetAbsolutePath(Directory.GetCurrentDirectory(), settings.Path);
var settingsDir = Path.GetDirectoryName(absoluteSettingsPath);
absolutePath = NuGetUriUtility.GetAbsolutePath(settingsDir, nonEmptyPath);
}
else
{
absolutePath = path;
}
var pathUri = absolutePath != null?UriUtility.EnsureTrailingSlash(UriUtility.CreateUri(absolutePath)) : null;
var baseUri = baseURIString != null?UriUtility.EnsureTrailingSlash(UriUtility.CreateUri(baseURIString)) : pathUri;
if (type == "local")
{
if (pathUri == null)
{
throw new ArgumentException("Missing path for account.");
}
result = new PhysicalFileSystem(cache, pathUri, baseUri);
}
else if (type == "azure")
{
var connectionString = JsonUtility.GetValueCaseInsensitive(sourceEntry, "connectionString");
var container = JsonUtility.GetValueCaseInsensitive(sourceEntry, "container");
if (string.IsNullOrEmpty(connectionString))
{
throw new ArgumentException("Missing connectionString for azure account.");
}
if (connectionString.Equals(AzureFileSystem.AzureEmptyConnectionString, StringComparison.OrdinalIgnoreCase))
{
throw new ArgumentException("Invalid connectionString for azure account.");
}
if (string.IsNullOrEmpty(container))
{
throw new ArgumentException("Missing container for azure account.");
}
var azureAccount = CloudStorageAccount.Parse(connectionString);
if (pathUri == null)
{
// Get the default url from the container
pathUri = AzureUtility.GetContainerPath(azureAccount, container);
}
if (baseUri == null)
{
baseUri = pathUri;
}
result = new AzureFileSystem(cache, pathUri, baseUri, azureAccount, container, feedSubPath);
}
#if !SLEETLEGACY
else if (type == "s3")
{
var profileName = JsonUtility.GetValueCaseInsensitive(sourceEntry, "profileName");
var accessKeyId = JsonUtility.GetValueCaseInsensitive(sourceEntry, "accessKeyId");
var secretAccessKey = JsonUtility.GetValueCaseInsensitive(sourceEntry, "secretAccessKey");
var bucketName = JsonUtility.GetValueCaseInsensitive(sourceEntry, "bucketName");
var region = JsonUtility.GetValueCaseInsensitive(sourceEntry, "region");
var serviceURL = JsonUtility.GetValueCaseInsensitive(sourceEntry, "serviceURL");
var serverSideEncryptionMethod = JsonUtility.GetValueCaseInsensitive(sourceEntry, "serverSideEncryptionMethod") ?? "None";
var compress = JsonUtility.GetBoolCaseInsensitive(sourceEntry, "compress", true);
if (string.IsNullOrEmpty(bucketName))
{
throw new ArgumentException("Missing bucketName for Amazon S3 account.");
}
if (string.IsNullOrEmpty(region) && string.IsNullOrEmpty(serviceURL))
{
throw new ArgumentException("Either 'region' or 'serviceURL' must be specified for an Amazon S3 account");
}
if (!string.IsNullOrEmpty(region) && !string.IsNullOrEmpty(serviceURL))
{
throw new ArgumentException("Options 'region' and 'serviceURL' cannot be used together");
}
if (serverSideEncryptionMethod != "None" && serverSideEncryptionMethod != "AES256")
{
throw new ArgumentException("Only 'None' or 'AES256' are currently supported for serverSideEncryptionMethod");
}
// Use the SDK value
var serverSideEncryptionMethodValue = ServerSideEncryptionMethod.None;
if (serverSideEncryptionMethod == "AES256")
{
serverSideEncryptionMethodValue = ServerSideEncryptionMethod.AES256;
}
AmazonS3Config config = null;
if (serviceURL != null)
{
config = new AmazonS3Config()
{
ServiceURL = serviceURL,
ProxyCredentials = CredentialCache.DefaultNetworkCredentials
};
}
else
{
config = new AmazonS3Config()
{
RegionEndpoint = RegionEndpoint.GetBySystemName(region),
ProxyCredentials = CredentialCache.DefaultNetworkCredentials
};
}
AmazonS3Client amazonS3Client = null;
// Load credentials from the current profile
if (!string.IsNullOrWhiteSpace(profileName))
{
var credFile = new SharedCredentialsFile();
if (credFile.TryGetProfile(profileName, out var profile))
{
amazonS3Client = new AmazonS3Client(profile.GetAWSCredentials(profileSource: null), config);
}
else
{
throw new ArgumentException($"The specified AWS profileName {profileName} could not be found. The feed must specify a valid profileName for an AWS credentials file. For help on credential files see: https://docs.aws.amazon.com/sdk-for-net/v2/developer-guide/net-dg-config-creds.html#creds-file");
}
}
// Load credentials explicitly with an accessKey and secretKey
else if (
!string.IsNullOrWhiteSpace(accessKeyId) &&
!string.IsNullOrWhiteSpace(secretAccessKey))
{
amazonS3Client = new AmazonS3Client(new BasicAWSCredentials(accessKeyId, secretAccessKey), config);
}
// Load credentials from Environment Variables
else if (
!string.IsNullOrWhiteSpace(Environment.GetEnvironmentVariable(EnvironmentVariablesAWSCredentials.ENVIRONMENT_VARIABLE_ACCESSKEY)) &&
!string.IsNullOrWhiteSpace(Environment.GetEnvironmentVariable(EnvironmentVariablesAWSCredentials.ENVIRONMENT_VARIABLE_SECRETKEY)))
{
amazonS3Client = new AmazonS3Client(new EnvironmentVariablesAWSCredentials(), config);
}
// Load credentials from an ECS docker container
else if (
!string.IsNullOrWhiteSpace(Environment.GetEnvironmentVariable(ECSTaskCredentials.ContainerCredentialsURIEnvVariable)))
{
amazonS3Client = new AmazonS3Client(new ECSTaskCredentials(), config);
}
// Assume IAM role
else
{
using (var client = new AmazonSecurityTokenServiceClient(config.RegionEndpoint))
{
try
{
var identity = await client.GetCallerIdentityAsync(new GetCallerIdentityRequest());
}
catch (Exception ex)
{
throw new ArgumentException(
"Failed to determine AWS identity - ensure you have an IAM " +
"role set, have set up default credentials or have specified a profile/key pair.", ex);
}
}
amazonS3Client = new AmazonS3Client(config);
}
if (pathUri == null)
{
// Find the default path
pathUri = AmazonS3Utility.GetBucketPath(bucketName, config.RegionEndpoint.SystemName);
}
if (baseUri == null)
{
baseUri = pathUri;
}
result = new AmazonS3FileSystem(
cache,
pathUri,
baseUri,
amazonS3Client,
bucketName,
serverSideEncryptionMethodValue,
feedSubPath,
compress);
}
#endif
}
}
return(result);
}