feat: support tools in text generation

src/Cnblogs.DashScope.Sdk/ChatMessage.cs

@@ -5,4 +5,7 @@ namespace Cnblogs.DashScope.Sdk;
 /// <summary>
 /// Represents a chat message between the user and the model.
 /// </summary>
-public record ChatMessage(string Role, string Content) : IMessage<string>;
+/// <param name="Role">The role of this message.</param>
+/// <param name="Content">The content of this message.</param>
+/// <param name="ToolCalls">Calls to the function.</param>
+public record ChatMessage(string Role, string Content, List<ToolCall>? ToolCalls = null) : IMessage<string>;

src/Cnblogs.DashScope.Sdk/Cnblogs.DashScope.Sdk.csproj

@@ -4,4 +4,7 @@
     <GenerateDocumentationFile>true</GenerateDocumentationFile>
     <PackageTags>Cnblogs;Dashscope;AI;Sdk;Embedding;</PackageTags>
   </PropertyGroup>
+  <ItemGroup>
+    <PackageReference Include="JsonSchema.Net.Generation" Version="4.1.1" />
+  </ItemGroup>
 </Project>

src/Cnblogs.DashScope.Sdk/FunctionCall.cs

@@ -0,0 +1,8 @@
+namespace Cnblogs.DashScope.Sdk;
+
+/// <summary>
+/// Represents a call to function.
+/// </summary>
+/// <param name="Name">Name of the function to call.</param>
+/// <param name="Arguments">Arguments of this call, usually a json string.</param>
+public record FunctionCall(string Name, string? Arguments);

src/Cnblogs.DashScope.Sdk/FunctionDefinition.cs

@@ -0,0 +1,11 @@
+using Json.Schema;
+
+namespace Cnblogs.DashScope.Sdk;
+
+/// <summary>
+/// Definition of function that can be called by model.
+/// </summary>
+/// <param name="Name">The name of the function.</param>
+/// <param name="Description">Descriptions about this function that help model to decide when to call this function.</param>
+/// <param name="Parameters">The parameters JSON schema.</param>
+public record FunctionDefinition(string Name, string Description, JsonSchema? Parameters);

src/Cnblogs.DashScope.Sdk/ITextGenerationParameters.cs

@@ -42,4 +42,9 @@ public interface ITextGenerationParameters : IIncrementalOutputParameter, ISeedP
     /// Enable internet search when generation. Defaults to false.
     /// </summary>
     public bool? EnableSearch { get; }
+
+    /// <summary>
+    /// Available tools for model to call.
+    /// </summary>
+    public List<ToolDefinition>? Tools { get; }
 }

src/Cnblogs.DashScope.Sdk/TextGenerationInput.cs

@@ -14,4 +14,9 @@ public class TextGenerationInput
     /// The collection of context messages associated with this chat completions request.
     /// </summary>
     public IEnumerable<ChatMessage>? Messages { get; set; }
+
+    /// <summary>
+    /// Available tools for model to use.
+    /// </summary>
+    public IEnumerable<ToolDefinition>? Tools { get; set; }
 }

src/Cnblogs.DashScope.Sdk/TextGenerationParameters.cs

@@ -32,6 +32,9 @@ public class TextGenerationParameters : ITextGenerationParameters
     /// <inheritdoc />
     public bool? EnableSearch { get; set; }
 
+    /// <inheritdoc />
+    public List<ToolDefinition>? Tools { get; set; }
+
     /// <inheritdoc />
     public bool? IncrementalOutput { get; set; }
 }

src/Cnblogs.DashScope.Sdk/ToolCall.cs

@@ -0,0 +1,9 @@
+namespace Cnblogs.DashScope.Sdk;
+
+/// <summary>
+/// Represents a call to tool.
+/// </summary>
+/// <param name="Id">Id of this tool call.</param>
+/// <param name="Type">Type of the tool.</param>
+/// <param name="Function">Not null if type is function.</param>
+public record ToolCall(string? Id, string Type, FunctionCall? Function);

src/Cnblogs.DashScope.Sdk/ToolDefinition.cs

@@ -0,0 +1,8 @@
+namespace Cnblogs.DashScope.Sdk;
+
+/// <summary>
+/// Definition of a tool that model can call during generation.
+/// </summary>
+/// <param name="Type">The type of this tool. Use <see cref="ToolTypes"/> to get all available options.</param>
+/// <param name="Function">Not null when <paramref name="Type"/> is tool.</param>
+public record ToolDefinition(string Type, FunctionDefinition? Function);

src/Cnblogs.DashScope.Sdk/ToolTypes.cs

@@ -0,0 +1,12 @@
+namespace Cnblogs.DashScope.Sdk;
+
+/// <summary>
+/// Available tool types for <see cref="ToolDefinition"/>.
+/// </summary>
+public static class ToolTypes
+{
+    /// <summary>
+    /// Function type.
+    /// </summary>
+    public const string Function = "function";
+}

test/Cnblogs.DashScope.Sdk.UnitTests/RawHttpData/single-generation-message-with-tools-nosse.request.json

@@ -0,0 +1,51 @@
+{
+  "model": "qwen-max",
+  "input": {
+    "messages": [
+      {
+        "role": "user",
+        "content": "杭州现在的天气如何？"
+      }
+    ]
+  },
+  "parameters": {
+    "result_format": "message",
+    "seed": 1234,
+    "max_tokens": 1500,
+    "top_p": 0.8,
+    "top_k": 100,
+    "repetition_penalty": 1.1,
+    "temperature": 0.85,
+    "stop": [[37763, 367]],
+    "enable_search": false,
+    "incremental_output": false,
+    "tools": [
+      {
+        "type": "function",
+        "function": {
+          "name": "get_current_weather",
+          "description": "获取现在的天气",
+          "parameters": {
+            "type": "object",
+            "properties": {
+              "location": {
+                "type": "string",
+                "description": "要获取天气的省市名称，例如浙江省杭州市"
+              },
+              "unit": {
+                "description": "温度单位",
+                "enum": [
+                  "Celsius",
+                  "Fahrenheit"
+                ]
+              }
+            },
+            "required": [
+              "location"
+            ]
+          }
+        }
+      }
+    ]
+  }
+}

test/Cnblogs.DashScope.Sdk.UnitTests/RawHttpData/single-generation-message-with-tools-nosse.response.body.txt

@@ -0,0 +1 @@
+{"output":{"choices":[{"finish_reason":"tool_calls","message":{"role":"assistant","tool_calls":[{"function":{"name":"get_current_weather","arguments":"{\"location\": \"浙江省杭州市\", \"unit\": \"Celsius\"}"},"id":"","type":"function"}],"content":""}}]},"usage":{"total_tokens":36,"output_tokens":31,"input_tokens":5},"request_id":"40b4361e-e936-91b5-879d-355a45d670f8"}

test/Cnblogs.DashScope.Sdk.UnitTests/RawHttpData/single-generation-message-with-tools-nosse.response.header.txt

@@ -0,0 +1,14 @@
+HTTP/1.1 200 OK
+eagleeye-traceid: 7328e5207abf69133abfe3a68446fc2d
+content-type: application/json
+x-dashscope-call-gateway: true
+x-dashscope-experiments: 33e6d810-qwen-max-base-default-imbalance-fix-lua
+req-cost-time: 3898
+req-arrive-time: 1710324737299
+resp-start-time: 1710324741198
+x-envoy-upstream-service-time: 3893
+content-encoding: gzip
+vary: Accept-Encoding
+date: Wed, 13 Mar 2024 10:12:21 GMT
+server: istio-envoy
+transfer-encoding: chunked

test/Cnblogs.DashScope.Sdk.UnitTests/ServiceCollectionInjectorTests.cs

@@ -103,6 +103,27 @@ public void Configuration_CustomSectionName_Inject()
         httpClient.BaseAddress.Should().BeEquivalentTo(new Uri(ProxyApi));
     }
 
+    [Fact]
+    public void Configuration_AddMultipleTime_Replace()
+    {
+        // Arrange
+        var services = new ServiceCollection();
+
+        // Act
+        services.AddDashScopeClient(ApiKey, ProxyApi);
+        services.AddDashScopeClient(ApiKey, ProxyApi);
+        var provider = services.BuildServiceProvider();
+        var httpClient = provider.GetRequiredService<IHttpClientFactory>().CreateClient(nameof(IDashScopeClient));
+
+        // Assert
+        provider.GetRequiredService<IDashScopeClient>().Should().NotBeNull().And
+            .BeOfType<DashScopeClientCore>();
+        httpClient.Should().NotBeNull();
+        httpClient.DefaultRequestHeaders.Authorization.Should()
+            .BeEquivalentTo(new AuthenticationHeaderValue("Bearer", ApiKey));
+        httpClient.BaseAddress.Should().BeEquivalentTo(new Uri(ProxyApi));
+    }
+
     [Fact]
     public void Configuration_NoApiKey_Throw()
     {

test/Cnblogs.DashScope.Sdk.UnitTests/TextGenerationSerializationTests.cs

@@ -47,12 +47,14 @@ public async Task SingleCompletion_TextFormatSse_SuccessAsync()
         message.ToString().Should().Be(testCase.ResponseModel.Output.Text);
     }
 
-    [Fact]
-    public async Task SingleCompletion_MessageFormatNoSse_SuccessAsync()
+    [Theory]
+    [MemberData(nameof(SingleGenerationMessageFormatData))]
+    public async Task SingleCompletion_MessageFormatNoSse_SuccessAsync(
+        RequestSnapshot<ModelRequest<TextGenerationInput, ITextGenerationParameters>,
+            ModelResponse<TextGenerationOutput, TextGenerationTokenUsage>> testCase)
     {
         // Arrange
         const bool sse = false;
-        var testCase = Snapshots.TextGeneration.MessageFormat.SingleMessage;
         var (client, handler) = await Sut.GetTestClientAsync(sse, testCase);
 
         // Act
@@ -83,7 +85,9 @@ public async Task SingleCompletion_MessageFormatSse_SuccessAsync()
             Arg.Is<HttpRequestMessage>(m => Checkers.IsJsonEquivalent(m.Content!, testCase.GetRequestJson(sse))),
             Arg.Any<CancellationToken>());
         outputs.SkipLast(1).Should().AllSatisfy(x => x.Output.Choices![0].FinishReason.Should().Be("null"));
-        outputs.Last().Should().BeEquivalentTo(testCase.ResponseModel, o => o.Excluding(y => y.Output.Choices![0].Message.Content));
+        outputs.Last().Should().BeEquivalentTo(
+            testCase.ResponseModel,
+            o => o.Excluding(y => y.Output.Choices![0].Message.Content));
         message.ToString().Should().Be(testCase.ResponseModel.Output.Choices![0].Message.Content);
     }
 
@@ -105,7 +109,14 @@ public async Task ConversationCompletion_MessageFormatSse_SuccessAsync()
             Arg.Is<HttpRequestMessage>(m => Checkers.IsJsonEquivalent(m.Content!, testCase.GetRequestJson(sse))),
             Arg.Any<CancellationToken>());
         outputs.SkipLast(1).Should().AllSatisfy(x => x.Output.Choices![0].FinishReason.Should().Be("null"));
-        outputs.Last().Should().BeEquivalentTo(testCase.ResponseModel, o => o.Excluding(y => y.Output.Choices![0].Message.Content));
+        outputs.Last().Should().BeEquivalentTo(
+            testCase.ResponseModel,
+            o => o.Excluding(y => y.Output.Choices![0].Message.Content));
         message.ToString().Should().Be(testCase.ResponseModel.Output.Choices![0].Message.Content);
     }
+
+    public static readonly TheoryData<RequestSnapshot<ModelRequest<TextGenerationInput, ITextGenerationParameters>,
+        ModelResponse<TextGenerationOutput, TextGenerationTokenUsage>>> SingleGenerationMessageFormatData = new(
+        Snapshots.TextGeneration.MessageFormat.SingleMessage,
+        Snapshots.TextGeneration.MessageFormat.SingleMessageWithTools);
 }

test/Cnblogs.DashScope.Sdk.UnitTests/Utils/GetCurrentWeatherParameters.cs

@@ -0,0 +1,19 @@
+using System.Text.Json.Serialization;
+using Json.More;
+using Json.Schema.Generation;
+
+namespace Cnblogs.DashScope.Sdk.UnitTests.Utils;
+
+public record GetCurrentWeatherParameters(
+    [property: Required]
+    [property: Description("要获取天气的省市名称，例如浙江省杭州市")]
+    string Location,
+    [property: JsonConverter(typeof(EnumStringConverter<TemperatureUnit>))]
+    [property: Description("温度单位")]
+    TemperatureUnit Unit = TemperatureUnit.Celsius);
+
+public enum TemperatureUnit
+{
+    Celsius,
+    Fahrenheit
+}

test/Cnblogs.DashScope.Sdk.UnitTests/Utils/Snapshots.cs

@@ -1,4 +1,7 @@
-namespace Cnblogs.DashScope.Sdk.UnitTests.Utils;
+using Json.Schema;
+using Json.Schema.Generation;
+
+namespace Cnblogs.DashScope.Sdk.UnitTests.Utils;
 
 public static class Snapshots
 {
@@ -267,6 +270,75 @@ public static class MessageFormat
                         }
                     });
 
+            public static readonly
+                RequestSnapshot<ModelRequest<TextGenerationInput, ITextGenerationParameters>,
+                    ModelResponse<TextGenerationOutput, TextGenerationTokenUsage>> SingleMessageWithTools =
+                    new(
+                        "single-generation-message-with-tools",
+                        new()
+                        {
+                            Model = "qwen-max",
+                            Input = new() { Messages = [new("user", "杭州现在的天气如何？")] },
+                            Parameters = new TextGenerationParameters()
+                            {
+                                ResultFormat = "message",
+                                Seed = 1234,
+                                MaxTokens = 1500,
+                                TopP = 0.8f,
+                                TopK = 100,
+                                RepetitionPenalty = 1.1f,
+                                Temperature = 0.85f,
+                                Stop = new([[37763, 367]]),
+                                EnableSearch = false,
+                                IncrementalOutput = false,
+                                Tools =
+                                [
+                                    new ToolDefinition(
+                                        "function",
+                                        new FunctionDefinition(
+                                            "get_current_weather",
+                                            "获取现在的天气",
+                                            new JsonSchemaBuilder().FromType<GetCurrentWeatherParameters>(
+                                                    new()
+                                                    {
+                                                        PropertyNameResolver = PropertyNameResolvers.LowerSnakeCase
+                                                    })
+                                                .Build()))
+                                ]
+                            }
+                        },
+                        new()
+                        {
+                            Output = new()
+                            {
+                                Choices =
+                                [
+                                    new()
+                                    {
+                                        FinishReason = "tool_calls",
+                                        Message = new(
+                                            "assistant",
+                                            string.Empty,
+                                            [
+                                                new(
+                                                    string.Empty,
+                                                    ToolTypes.Function,
+                                                    new(
+                                                        "get_current_weather",
+                                                        """{"location": "浙江省杭州市", "unit": "Celsius"}"""))
+                                            ])
+                                    }
+                                ]
+                            },
+                            RequestId = "40b4361e-e936-91b5-879d-355a45d670f8",
+                            Usage = new()
+                            {
+                                InputTokens = 5,
+                                OutputTokens = 31,
+                                TotalTokens = 36
+                            }
+                        });
+
             public static readonly RequestSnapshot<ModelRequest<TextGenerationInput, ITextGenerationParameters>,
                     ModelResponse<TextGenerationOutput, TextGenerationTokenUsage>>
                 ConversationMessageIncremental = new(