public virtual async Task <AmazonS3Client> GetAmazonS3Client(
AwsBlobProviderConfiguration configuration)
{
var region = RegionEndpoint.GetBySystemName(configuration.Region);
if (configuration.UseCredentials)
{
var awsCredentials = GetAwsCredentials(configuration);
return(awsCredentials == null
? new AmazonS3Client(region)
: new AmazonS3Client(awsCredentials, region));
}
if (configuration.UseTemporaryCredentials)
{
return(new AmazonS3Client(await GetTemporaryCredentialsAsync(configuration), region));
}
if (configuration.UseTemporaryFederatedCredentials)
{
return(new AmazonS3Client(await GetTemporaryFederatedCredentialsAsync(configuration),
region));
}
Check.NotNullOrWhiteSpace(configuration.AccessKeyId, nameof(configuration.AccessKeyId));
Check.NotNullOrWhiteSpace(configuration.SecretAccessKey, nameof(configuration.SecretAccessKey));
return(new AmazonS3Client(configuration.AccessKeyId, configuration.SecretAccessKey, configuration.Region));
}
public override void ConfigureServices(ServiceConfigurationContext context)
{
context.Services.ReplaceConfiguration(ConfigurationHelper.BuildConfiguration(builderAction: builder =>
{
builder.AddUserSecrets(UserSecretsId);
}));
var configuration = context.Services.GetConfiguration();
var accessKeyId = configuration["Aws:AccessKeyId"];
var secretAccessKey = configuration["Aws:SecretAccessKey"];
var region = configuration["Aws:Region"];
Configure <AbpBlobStoringOptions>(options =>
{
options.Containers.ConfigureAll((containerName, containerConfiguration) =>
{
containerConfiguration.UseAws(aws =>
{
aws.AccessKeyId = accessKeyId;
aws.SecretAccessKey = secretAccessKey;
aws.Region = region;
aws.CreateContainerIfNotExists = true;
aws.ContainerName = _randomContainerName;
_configuration = aws;
});
});
});
}
protected virtual async Task <SessionAWSCredentials> GetTemporaryFederatedCredentialsAsync(
AwsBlobProviderConfiguration configuration)
{
Check.NotNullOrWhiteSpace(configuration.Name, nameof(configuration.Name));
Check.NotNullOrWhiteSpace(configuration.Policy, nameof(configuration.Policy));
var temporaryCredentialsCache = await Cache.GetAsync(configuration.TemporaryCredentialsCacheKey);
if (temporaryCredentialsCache == null)
{
AmazonSecurityTokenServiceClient stsClient;
if (!configuration.AccessKeyId.IsNullOrEmpty() && !configuration.SecretAccessKey.IsNullOrEmpty())
{
stsClient = new AmazonSecurityTokenServiceClient(configuration.AccessKeyId,
configuration.SecretAccessKey);
}
else
{
var awsCredentials = GetAwsCredentials(configuration);
stsClient = awsCredentials == null
? new AmazonSecurityTokenServiceClient()
: new AmazonSecurityTokenServiceClient(awsCredentials);
}
using (stsClient)
{
var federationTokenRequest =
new GetFederationTokenRequest
{
DurationSeconds = configuration.DurationSeconds,
Name = configuration.Name,
Policy = configuration.Policy
};
var federationTokenResponse =
await stsClient.GetFederationTokenAsync(federationTokenRequest);
var credentials = federationTokenResponse.Credentials;
temporaryCredentialsCache =
await SetTemporaryCredentialsCache(configuration, credentials);
}
}
var sessionCredentials = new SessionAWSCredentials(
StringEncryptionService.Decrypt(temporaryCredentialsCache.AccessKeyId),
StringEncryptionService.Decrypt(temporaryCredentialsCache.SecretAccessKey),
StringEncryptionService.Decrypt(temporaryCredentialsCache.SessionToken));
return(sessionCredentials);
}
protected virtual AWSCredentials GetAwsCredentials(
AwsBlobProviderConfiguration configuration)
{
if (configuration.ProfileName.IsNullOrWhiteSpace())
{
return(null);
}
var chain = new CredentialProfileStoreChain(configuration.ProfilesLocation);
if (chain.TryGetAWSCredentials(configuration.ProfileName, out var awsCredentials))
{
return(awsCredentials);
}
throw new AmazonS3Exception("Not found aws credentials");
}
private async Task <AwsTemporaryCredentialsCacheItem> SetTemporaryCredentialsCache(
AwsBlobProviderConfiguration configuration,
Credentials credentials)
{
var temporaryCredentialsCache = new AwsTemporaryCredentialsCacheItem(
StringEncryptionService.Encrypt(credentials.AccessKeyId),
StringEncryptionService.Encrypt(credentials.SecretAccessKey),
StringEncryptionService.Encrypt(credentials.SessionToken));
await Cache.SetAsync(configuration.TemporaryCredentialsCacheKey, temporaryCredentialsCache,
new DistributedCacheEntryOptions
{
AbsoluteExpirationRelativeToNow = TimeSpan.FromSeconds(configuration.DurationSeconds - 10)
});
return(temporaryCredentialsCache);
}
