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annotate Implab/Diagnostics/Extensions.cs @ 196:40d7fed4a09e

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fixed promise chaining behavior, the error handler doesn't handle result or cancellation handlers exceptions these exceptions are propagated to the next handlers.
author cin
date Mon, 29 Aug 2016 23:15:51 +0300
parents f973c5df9972
children
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1 namespace Implab.Diagnostics {
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2 public static class Extensions {
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3 public static IPromise<T> EndLogicalOperation<T>(this IPromise<T> promise) {
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4 Safe.ArgumentNotNull(promise, "promise");
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5 var op = TraceContext.Instance.DetachLogicalOperation();
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6
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7 return promise.On(
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8 x => {
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9 TraceContext.Instance.EnterLogicalOperation(op,true);
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10 TraceLog.TraceInformation("promise = {0}", x);
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11 TraceLog.EndLogicalOperation();
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12 TraceContext.Instance.Leave();
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13 },
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14 err =>{
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15 TraceContext.Instance.EnterLogicalOperation(op,true);
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16 TraceLog.TraceError("promise died {0}", err);
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17 TraceLog.EndLogicalOperation();
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18 TraceContext.Instance.Leave();
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19 },
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20 reason => {
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21 TraceContext.Instance.EnterLogicalOperation(op,true);
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22 TraceLog.TraceInformation("promise cancelled {0}", reason == null ? "<no-reason>" : reason.Message);
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23 TraceLog.EndLogicalOperation();
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24 TraceContext.Instance.Leave();
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25 }
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26 );
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27 }
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28
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29 public static IPromise EndLogicalOperation(this IPromise promise) {
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30 Safe.ArgumentNotNull(promise, "promise");
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31 var op = TraceContext.Instance.DetachLogicalOperation();
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32
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33 return promise.On(() => {
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34 TraceContext.Instance.EnterLogicalOperation(op,true);
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35 TraceLog.EndLogicalOperation();
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36 TraceContext.Instance.Leave();
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37 }, PromiseEventType.All);
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38 }
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39 }
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40 }
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