73 lines
2.2 KiB
C#
73 lines
2.2 KiB
C#
/*
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* MinIO .NET Library for Amazon S3 Compatible Cloud Storage,
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* (C) 2021 MinIO, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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using Minio.DataModel;
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namespace Minio.Credentials;
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public class ChainedProvider : IClientProvider
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{
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public ChainedProvider()
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{
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Providers = new List<IClientProvider>();
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}
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internal List<IClientProvider> Providers { get; set; }
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internal IClientProvider CurrentProvider { get; set; }
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internal AccessCredentials Credentials { get; set; }
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public AccessCredentials GetCredentials()
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{
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if (Credentials?.AreExpired() == false) return Credentials;
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if (CurrentProvider is not null && !Credentials.AreExpired())
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{
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Credentials = CurrentProvider.GetCredentials();
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return CurrentProvider.GetCredentials();
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}
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foreach (var provider in Providers)
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{
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var credentials = provider.GetCredentials();
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if (credentials?.AreExpired() == false)
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{
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CurrentProvider = provider;
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Credentials = credentials;
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return credentials;
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}
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}
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throw new InvalidOperationException("None of the assigned providers were able to provide valid credentials.");
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}
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public ValueTask<AccessCredentials> GetCredentialsAsync()
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{
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return new ValueTask<AccessCredentials>(GetCredentials());
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}
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public ChainedProvider AddProvider(IClientProvider provider)
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{
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Providers.Add(provider);
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return this;
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}
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public ChainedProvider AddProviders(IClientProvider[] providers)
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{
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Providers.AddRange(providers.ToList());
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return this;
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}
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}
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