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src/Accounts/Authentication/Extensions/ServiceClientExtension.cs
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|---|---|---|
| @@ -0,0 +1,122 @@ | ||
| // ---------------------------------------------------------------------------------- | ||
| // | ||
| // Copyright Microsoft Corporation | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
| // ---------------------------------------------------------------------------------- | ||
|
|
||
| using Microsoft.Rest.TransientFaultHandling; | ||
| using System; | ||
|
|
||
| namespace Microsoft.Azure.Commands.Common.Authentication.Abstractions | ||
| { | ||
| internal static class ServiceClientExtension | ||
| { | ||
| private class HttpRetryTimes | ||
| { | ||
| private const string maxRetriesVariableName = "AZURE_PS_HTTP_MAX_RETRIES"; | ||
| private const string maxRetriesFor429VariableName = "AZURE_PS_HTTP_MAX_RETRIES_FOR_429"; | ||
|
|
||
| public static int? AzurePsHttpMaxRetries | ||
| { | ||
| get | ||
| { | ||
| return TryGetAzurePsHttpMaxRetries(); | ||
| } | ||
| } | ||
| public static int? AzurePsHttpMaxRetriesFor429 | ||
| { | ||
| get | ||
| { | ||
| return TryGetAzurePsHttpMaxRetriesFor429(); | ||
| } | ||
| } | ||
|
|
||
| private static int? TryGetValue(string environmentVariable) | ||
| { | ||
| int? retries = null; | ||
| var value = Environment.GetEnvironmentVariable(environmentVariable); | ||
| if (value != null) | ||
| { | ||
| int valueParsed = int.MinValue; | ||
| if (int.TryParse(value, out valueParsed)) | ||
| { | ||
| retries = valueParsed; | ||
| } | ||
| } | ||
| return retries; | ||
| } | ||
|
|
||
| private static int? TryGetAzurePsHttpMaxRetries() | ||
| { | ||
| return TryGetValue(maxRetriesVariableName); | ||
| } | ||
|
|
||
| private static int? TryGetAzurePsHttpMaxRetriesFor429() | ||
| { | ||
| return TryGetValue(maxRetriesFor429VariableName); | ||
| } | ||
| } | ||
|
|
||
| private static bool SetMaxTimesForRetryAfterHandler<TClient>(this Microsoft.Rest.ServiceClient<TClient> serviceClient, uint retrytimes) where TClient : Microsoft.Rest.ServiceClient<TClient> | ||
| { | ||
| bool findRetryHandler = false; | ||
| foreach (var handler in serviceClient.HttpMessageHandlers) | ||
| { | ||
| var retryHandler = handler as Microsoft.Rest.RetryAfterDelegatingHandler; | ||
| if (retryHandler != null) | ||
| { | ||
| retryHandler.MaxRetries = Convert.ToInt32(retrytimes); | ||
| findRetryHandler = true; | ||
| } | ||
| } | ||
| return findRetryHandler; | ||
| } | ||
|
|
||
| /// <summary> | ||
| /// Set max retry times of retry after handler that is used to handle the response with retry-after header | ||
| /// from environement variable AZURE_PS_HTTP_MAX_RETRIES_FOR_429 | ||
| /// </summary> | ||
| /// <returns>Whether succeed to set max retry times or not</returns> | ||
| public static bool TrySetMaxTimesForRetryAfterHandler<TClient>(this Microsoft.Rest.ServiceClient<TClient> serviceClient) where TClient : Microsoft.Rest.ServiceClient<TClient> | ||
| { | ||
| int? maxretriesfor429 = HttpRetryTimes.AzurePsHttpMaxRetriesFor429; | ||
| if (maxretriesfor429 != null && maxretriesfor429 >= 0) | ||
| { | ||
| return serviceClient.SetMaxTimesForRetryAfterHandler(Convert.ToUInt32(maxretriesfor429)); | ||
| } | ||
| return false; | ||
| } | ||
|
|
||
| /// <summary> | ||
| /// Set retry count of retry policy using ExponentialBackoffRetryStrategy from environement variable AZURE_PS_HTTP_MAX_RETRIES | ||
| /// </summary> | ||
| /// <returns>Whether succeed to set retry count or not</returns> | ||
| public static bool TrySetRetryCountofRetryPolicy<TClient>(this Microsoft.Rest.ServiceClient<TClient> serviceClient) where TClient : Microsoft.Rest.ServiceClient<TClient> | ||
| { | ||
| int? maxretries = ServiceClientExtension.HttpRetryTimes.AzurePsHttpMaxRetries; | ||
| if (maxretries != null && maxretries >= 0) | ||
| { | ||
| TimeSpan defaultBackoffDelta = new TimeSpan(0, 0, 10); | ||
| TimeSpan defaultMaxBackoff = new TimeSpan(0, 0, 10); | ||
| TimeSpan defaultMinBackoff = new TimeSpan(0, 0, 1); | ||
| var retryStrategy = new ExponentialBackoffRetryStrategy( | ||
| (int)maxretries, | ||
| defaultBackoffDelta, | ||
| defaultMaxBackoff, | ||
| defaultMinBackoff); | ||
| var retryPolicy = new RetryPolicy<HttpStatusCodeErrorDetectionStrategy>(retryStrategy); | ||
| serviceClient.SetRetryPolicy(retryPolicy); | ||
| return true; | ||
| } | ||
| return false; | ||
| } | ||
| } | ||
| } |
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