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Add support to retry function execution on invocation failures (Azure…
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23 changes: 23 additions & 0 deletions
23
sample/NodeRetry/HttpTrigger-RetryFunctionJson/function.json
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,23 @@ | ||
| { | ||
| "bindings": [ | ||
| { | ||
| "type": "httpTrigger", | ||
| "direction": "in", | ||
| "name": "req", | ||
| "methods": [ | ||
| "get", | ||
| "post" | ||
| ] | ||
| }, | ||
| { | ||
| "type": "http", | ||
| "direction": "out", | ||
| "name": "res" | ||
| } | ||
| ], | ||
| "retry": { | ||
| "strategy": "fixedDelay", | ||
| "maxRetryCount": 4, | ||
| "delayInterval": "00:00:03" | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,18 @@ | ||
| var invocationCount = 0; | ||
|
|
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| module.exports = async function (context, req) { | ||
| const reset = req.query.reset; | ||
| invocationCount = reset ? 0 : invocationCount | ||
|
|
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| context.log('JavaScript HTTP trigger function processed a request.invocationCount: ' + invocationCount); | ||
|
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| invocationCount = invocationCount + 1; | ||
| const responseMessage = "invocationCount: " + invocationCount; | ||
| if (invocationCount < 4) { | ||
| throw new Error('An error occurred'); | ||
| } | ||
| context.res = { | ||
| // status: 200, /* Defaults to 200 */ | ||
| body: responseMessage | ||
| }; | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,18 @@ | ||
| { | ||
| "bindings": [ | ||
| { | ||
| "type": "httpTrigger", | ||
| "direction": "in", | ||
| "name": "req", | ||
| "methods": [ | ||
| "get", | ||
| "post" | ||
| ] | ||
| }, | ||
| { | ||
| "type": "http", | ||
| "direction": "out", | ||
| "name": "res" | ||
| } | ||
| ] | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,18 @@ | ||
| var invocationCount = 0; | ||
|
|
||
| module.exports = async function (context, req) { | ||
| const reset = req.query.reset; | ||
| invocationCount = reset ? 0 : invocationCount | ||
|
|
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| context.log('JavaScript HTTP trigger function processed a request.invocationCount: ' + invocationCount); | ||
|
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| invocationCount = invocationCount + 1; | ||
| const responseMessage = "invocationCount: " + invocationCount; | ||
| if (invocationCount < 2) { | ||
| throw new Error('An error occurred'); | ||
| } | ||
| context.res = { | ||
| // status: 200, /* Defaults to 200 */ | ||
| body: responseMessage | ||
| }; | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,8 @@ | ||
| { | ||
| "version": "2.0", | ||
| "retry": { | ||
| "strategy": "fixedDelay", | ||
| "maxRetryCount": 2, | ||
| "delayInterval": "00:00:03" | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,61 @@ | ||
| // Copyright (c) .NET Foundation. All rights reserved. | ||
| // Licensed under the MIT License. See License.txt in the project root for license information. | ||
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| using System; | ||
| using System.Reflection; | ||
| using System.Reflection.Emit; | ||
| using Microsoft.Azure.WebJobs.Host; | ||
| using Microsoft.Azure.WebJobs.Script.Description; | ||
|
|
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| namespace Microsoft.Azure.WebJobs.Script | ||
| { | ||
| internal static class CustomAttributeBuilderUtility | ||
| { | ||
| internal static CustomAttributeBuilder GetRetryCustomAttributeBuilder(RetryOptions functionRetry) | ||
| { | ||
| switch (functionRetry.Strategy) | ||
| { | ||
| case RetryStrategy.FixedDelay: | ||
| Type fixedDelayRetryType = typeof(FixedDelayRetryAttribute); | ||
| ConstructorInfo fixedDelayRetryCtorInfo = fixedDelayRetryType.GetConstructor(new[] { typeof(int), typeof(string) }); | ||
| CustomAttributeBuilder fixedDelayRetryBuilder = new CustomAttributeBuilder( | ||
| fixedDelayRetryCtorInfo, | ||
| new object[] { functionRetry.MaxRetryCount, functionRetry.DelayInterval.ToString() }); | ||
| return fixedDelayRetryBuilder; | ||
| case RetryStrategy.ExponentialBackoff: | ||
| Type exponentialBackoffRetryType = typeof(ExponentialBackoffRetryAttribute); | ||
| ConstructorInfo exponentialBackoffDelayRetryCtorInfo = exponentialBackoffRetryType.GetConstructor(new[] { typeof(int), typeof(string), typeof(string) }); | ||
| CustomAttributeBuilder exponentialBackoffRetryBuilder = new CustomAttributeBuilder( | ||
| exponentialBackoffDelayRetryCtorInfo, | ||
| new object[] { functionRetry.MaxRetryCount, functionRetry.MinimumInterval.ToString(), functionRetry.MaximumInterval.ToString() }); | ||
| return exponentialBackoffRetryBuilder; | ||
| } | ||
| return null; | ||
| } | ||
|
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| internal static CustomAttributeBuilder GetTimeoutCustomAttributeBuilder(TimeSpan functionTimeout) | ||
| { | ||
| Type timeoutType = typeof(TimeoutAttribute); | ||
| ConstructorInfo ctorInfo = timeoutType.GetConstructor(new[] { typeof(string) }); | ||
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| PropertyInfo[] propertyInfos = new[] | ||
| { | ||
| timeoutType.GetProperty("ThrowOnTimeout"), | ||
| timeoutType.GetProperty("TimeoutWhileDebugging") | ||
| }; | ||
|
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| // Hard-code these for now. Eventually elevate to config | ||
| object[] propertyValues = new object[] | ||
| { | ||
| true, | ||
| true | ||
| }; | ||
|
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| return new CustomAttributeBuilder( | ||
| ctorInfo, | ||
| new object[] { functionTimeout.ToString() }, | ||
| propertyInfos, | ||
| propertyValues); | ||
| } | ||
| } | ||
| } |
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