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added hook for chain links #125

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merged 1 commit into from
Feb 1, 2024
Merged

added hook for chain links #125

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13 changes: 12 additions & 1 deletion src/libs/LangChain.Core/Chains/StackableChains/BaseStackableChain.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -96,7 +96,12 @@ public Task<IChainValues> CallAsync(IChainValues values, ICallbacks? callbacks =

try
{
return InternalCall(values);
var res= InternalCall(values);
if (_hook!=null)
{
_hook(values);
}
return res;
}
catch (StackableChainException)
{
Expand Down Expand Up @@ -217,4 +222,10 @@ public async Task<string> Run(

return res.Value[OutputKeys[0]].ToString() ?? string.Empty;
}

private Action<IChainValues>? _hook;
public void SetHook(Action<IChainValues> hook)
{
_hook = hook;
}
}
13 changes: 13 additions & 0 deletions src/libs/LangChain.Core/Chains/StackableChains/Extensions/HookExtension.cs
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Original file line number Diff line number Diff line change
@@ -0,0 +1,13 @@
using LangChain.Abstractions.Schema;
using LangChain.Chains.HelperChains;

namespace LangChain.Chains.StackableChains.Extensions;

public static class HookExtension
{
public static T Hook<T>(this T chain, Action<IChainValues> hook) where T : BaseStackableChain
{
chain.SetHook(hook);

Check warning on line 10 in src/libs/LangChain.Core/Chains/StackableChains/Extensions/HookExtension.cs

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GitHub Actions / Build and test / Build, test and publish 

In externally visible method 'T HookExtension.Hook<T>(T chain, Action<IChainValues> hook)', validate parameter 'chain' is non-null before using it. If appropriate, throw an 'ArgumentNullException' when the argument is 'null'. (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1062)
return chain;
}
}
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