Adds publishing Abstractions to NuGet. Closes #1248

.github/workflows/create-release.yml

@@ -193,6 +193,35 @@ jobs:
         if: contains(matrix.architecture, 'win-')
         run: |
           $(Get-FileHash ./${{ env.release }}/dev-proxy-installer-${{ matrix.architecture }}-${{ github.ref_name }}.exe -Algorithm SHA256).Hash
+  publish_nuget:
+    name: Publish to NuGet
+    needs: [publish_binaries]
+    runs-on: ubuntu-latest
+    environment:
+      name: gh_releases
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+      - name: Setup .NET
+        uses: actions/setup-dotnet@c2fa09f4bde5ebb9d1777cf28262a3eb3db3ced7 # v5.2.0
+        with:
+          dotnet-version: 10.0.x
+      - name: Get version from tag
+        id: get_version
+        run: echo "VERSION=${GITHUB_REF#refs/tags/v}" >> $GITHUB_OUTPUT
+      - name: Pack
+        run: >
+          dotnet pack ./DevProxy.Abstractions/DevProxy.Abstractions.csproj
+          -c Release
+          -p:PackageVersion=${{ steps.get_version.outputs.VERSION }}
+          -p:Version=${{ steps.get_version.outputs.VERSION }}
+          -o ./nupkg
+      - name: Push to NuGet
+        run: >
+          dotnet nuget push ./nupkg/DevProxy.Abstractions.${{ steps.get_version.outputs.VERSION }}.nupkg
+          --api-key ${{ secrets.NUGET_API_KEY }}
+          --source https://api.nuget.org/v3/index.json
+          --skip-duplicate
   create_release:
     name: Create Release
     needs: [publish_binaries]

DevProxy.Abstractions/DevProxy.Abstractions.csproj

@@ -10,8 +10,27 @@
     <RestorePackagesWithLockFile>true</RestorePackagesWithLockFile>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
     <AnalysisMode>AllEnabledByDefault</AnalysisMode>
+    <IsPackable>true</IsPackable>
+    <PackageId>DevProxy.Abstractions</PackageId>
+    <Title>Dev Proxy Abstractions</Title>
+    <Authors>Dev Proxy</Authors>
+    <Description>Abstractions for building custom Dev Proxy plugins. Dev Proxy is an API simulator that helps you effortlessly test your app beyond the happy path.</Description>
+    <PackageTags>devproxy;api;proxy;testing;mocking;plugins</PackageTags>
+    <PackageLicenseExpression>MIT</PackageLicenseExpression>
+    <PackageProjectUrl>https://aka.ms/devproxy</PackageProjectUrl>
+    <RepositoryUrl>https://github.com/dotnet/dev-proxy</RepositoryUrl>
+    <RepositoryType>git</RepositoryType>
+    <PackageReadmeFile>README.md</PackageReadmeFile>
+    <PackageIcon>icon.png</PackageIcon>
+    <!-- NU5104: stable package depends on prerelease System.CommandLine; suppress until a stable version is available -->
+    <NoWarn>NU5104</NoWarn>
   </PropertyGroup>
 
+  <ItemGroup>
+    <None Include="README.md" Pack="true" PackagePath="\" />
+    <None Include="..\media\icon.png" Pack="true" PackagePath="\" />
+  </ItemGroup>
+
   <ItemGroup>
     <PackageReference Include="Markdig" Version="0.41.3" />
     <PackageReference Include="Microsoft.EntityFrameworkCore.Sqlite" Version="9.0.4" />

DevProxy.Abstractions/README.md

@@ -0,0 +1,42 @@
+# Dev Proxy Abstractions
+
+[![NuGet Version](https://img.shields.io/nuget/v/DevProxy.Abstractions)](https://www.nuget.org/packages/DevProxy.Abstractions)
+[![NuGet Downloads](https://img.shields.io/nuget/dt/DevProxy.Abstractions)](https://www.nuget.org/packages/DevProxy.Abstractions)
+
+Abstractions for building custom [Dev Proxy](https://aka.ms/devproxy) plugins. Dev Proxy is an API simulator that helps you effortlessly test your app beyond the happy path.
+
+## What This Package Does
+
+This package provides the interfaces, base classes, and models needed to build custom Dev Proxy plugins. Use it when you want to extend Dev Proxy with your own functionality.
+
+## Usage
+
+Create a new class library project and add a reference to this package:
+
+```bash
+dotnet add package DevProxy.Abstractions
+```
+
+Then, implement the `IPlugin` interface or inherit from `BasePlugin`:
+
+```csharp
+using DevProxy.Abstractions.Plugins;
+using DevProxy.Abstractions.Proxy;
+using Microsoft.Extensions.Logging;
+
+public class MyPlugin(
+    ILogger logger,
+    ISet<UrlToWatch> urlsToWatch) : BasePlugin(logger, urlsToWatch)
+{
+    public override string Name => nameof(MyPlugin);
+
+    public override async Task BeforeRequestAsync(
+        ProxyRequestArgs e,
+        CancellationToken cancellationToken)
+    {
+        // Your custom logic here
+    }
+}
+```
+
+For more information, see the [Dev Proxy documentation](https://aka.ms/devproxy/docs).

DevProxy.Plugins/DevProxy.Plugins.csproj

@@ -11,6 +11,7 @@
     <RestorePackagesWithLockFile>true</RestorePackagesWithLockFile>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
     <AnalysisMode>AllEnabledByDefault</AnalysisMode>
+    <IsPackable>false</IsPackable>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)'=='Release'">
     <NoWarn>CS1998</NoWarn>

DevProxy/DevProxy.csproj

@@ -17,6 +17,7 @@
     <RestorePackagesWithLockFile>true</RestorePackagesWithLockFile>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
     <AnalysisMode>AllEnabledByDefault</AnalysisMode>
+    <IsPackable>false</IsPackable>
   </PropertyGroup>
 
   <ItemGroup>