feat: support tool choice

Author: ikesnowy

src/Cnblogs.DashScope.Core/IMaxTokenParameter.cs

@@ -0,0 +1,15 @@
+namespace Cnblogs.DashScope.Core;
+
+/// <summary>
+/// Marks parameter supports setting maximum number of output tokens.
+/// </summary>
+public interface IMaxTokenParameter
+{
+    /// <summary>
+    /// The maximum number of tokens the model can generate.
+    /// </summary>
+    /// <remarks>
+    /// Default and maximum number of tokens is 1500(qwen-turbo) or 2000(qwen-max, qwen-max-1201, qwen-max-longcontext, qwen-plus).
+    /// </remarks>
+    public int? MaxTokens { get; }
+}

src/Cnblogs.DashScope.Core/IMultimodalParameters.cs

@@ -3,4 +3,12 @@
 /// <summary>
 /// Optional parameters for multi-model generation request.
 /// </summary>
-public interface IMultimodalParameters : IProbabilityParameter, ISeedParameter, IIncrementalOutputParameter;
+public interface IMultimodalParameters
+    : IProbabilityParameter, ISeedParameter, IIncrementalOutputParameter, IPenaltyParameter, IMaxTokenParameter,
+        IStopTokenParameter
+{
+    /// <summary>
+    /// Allow higher resolution for inputs. When setting to <c>true</c>, increases the maximum input token from 1280 to 16384. Defaults to <c>false</c>.
+    /// </summary>
+    public bool? VlHighResolutionImages { get; }
+}

src/Cnblogs.DashScope.Core/IPenaltyParameter.cs

@@ -0,0 +1,18 @@
+namespace Cnblogs.DashScope.Core;
+
+/// <summary>
+/// Marks parameter accepts presence_penalty and repetition_penalty  options.
+/// </summary>
+public interface IPenaltyParameter
+{
+    /// <summary>
+    /// Increasing the repetition penalty can reduce the amount of repetition in the model’s output. A value of 1.0 indicates no penalty, with the default set at 1.1.
+    /// </summary>
+    public float? RepetitionPenalty { get; }
+
+    /// <summary>
+    /// Control the content repetition in text generated by the model.
+    /// </summary>
+    /// <remarks>Must be in [-2.0, 2.0]. Use higher penalty for batter creativity.</remarks>
+    public float? PresencePenalty { get; }
+}

src/Cnblogs.DashScope.Core/IProbabilityParameter.cs

@@ -1,7 +1,7 @@
 namespace Cnblogs.DashScope.Core;
 
 /// <summary>
-/// Marks parameter accepts top_p and top_k options.
+/// Marks parameter accepts top_p, top_k and temperature options.
 /// </summary>
 public interface IProbabilityParameter
 {
@@ -16,4 +16,10 @@ public interface IProbabilityParameter
     /// </summary>
     /// <remarks>top_k would been disabled if applied null or any value larger than 100.</remarks>
     public int? TopK { get; }
+
+    /// <summary>
+    /// Controls the diversity of generations. Lower temperature leads to more consistent result.
+    /// </summary>
+    /// <remarks>Must be in [0,2), qwen-max defaults to 0.7.</remarks>
+    public float? Temperature { get; }
 }

src/Cnblogs.DashScope.Core/IStopTokenParameter.cs

@@ -0,0 +1,12 @@
+namespace Cnblogs.DashScope.Core;
+
+/// <summary>
+/// Marks parameter supports setting stop tokens.
+/// </summary>
+public interface IStopTokenParameter
+{
+    /// <summary>
+    /// Stop generation when next token or string is in given range.
+    /// </summary>
+    public TextGenerationStop? Stop { get; }
+}

src/Cnblogs.DashScope.Core/ITextGenerationParameters.cs

@@ -3,7 +3,8 @@
 /// <summary>
 /// The text generation options.
 /// </summary>
-public interface ITextGenerationParameters : IIncrementalOutputParameter, ISeedParameter, IProbabilityParameter
+public interface ITextGenerationParameters
+    : IIncrementalOutputParameter, ISeedParameter, IProbabilityParameter, IPenaltyParameter, IMaxTokenParameter, IStopTokenParameter
 {
     /// <summary>
     /// The format of the result message, must be <c>text</c> or <c>message</c>.
@@ -14,30 +15,6 @@ public interface ITextGenerationParameters : IIncrementalOutputParameter, ISeedP
     /// </remarks>
     public string? ResultFormat { get; }
 
-    /// <summary>
-    /// The maximum number of tokens the model can generate.
-    /// </summary>
-    /// <remarks>
-    /// Default and maximum number of tokens is 1500(qwen-turbo) or 2000(qwen-max, qwen-max-1201, qwen-max-longcontext, qwen-plus).
-    /// </remarks>
-    public int? MaxTokens { get; }
-
-    /// <summary>
-    /// Increasing the repetition penalty can reduce the amount of repetition in the model’s output. A value of 1.0 indicates no penalty, with the default set at 1.1.
-    /// </summary>
-    public float? RepetitionPenalty { get; }
-
-    /// <summary>
-    /// Controls the diversity of generations. Lower temperature leads to more consistent result.
-    /// </summary>
-    /// <remarks>Must be in [0,2), defaults to 0.85.</remarks>
-    public float? Temperature { get; }
-
-    /// <summary>
-    /// Stop generation when next token or string is in given range.
-    /// </summary>
-    public TextGenerationStop? Stop { get; }
-
     /// <summary>
     /// Enable internet search when generation. Defaults to false.
     /// </summary>
@@ -49,7 +26,7 @@ public interface ITextGenerationParameters : IIncrementalOutputParameter, ISeedP
     public IEnumerable<ToolDefinition>? Tools { get; }
 
     /// <summary>
-    ///
+    /// Behavior when choosing tools.
     /// </summary>
     public ToolChoice? ToolChoice { get; }
 }

src/Cnblogs.DashScope.Core/MultimodalParameters.cs

@@ -11,9 +11,27 @@ public class MultimodalParameters : IMultimodalParameters
     /// <inheritdoc />
     public int? TopK { get; set; }
 
+    /// <inheritdoc />
+    public float? Temperature { get; set; }
+
     /// <inheritdoc />
     public ulong? Seed { get; set; }
 
     /// <inheritdoc />
     public bool? IncrementalOutput { get; set; }
+
+    /// <inheritdoc />
+    public bool? VlHighResolutionImages { get; set; }
+
+    /// <inheritdoc />
+    public float? RepetitionPenalty { get; set; }
+
+    /// <inheritdoc />
+    public float? PresencePenalty { get; set; }
+
+    /// <inheritdoc />
+    public int? MaxTokens { get; set; }
+
+    /// <inheritdoc />
+    public TextGenerationStop? Stop { get; set; }
 }

src/Cnblogs.DashScope.Core/TextGenerationParameters.cs

@@ -23,6 +23,9 @@ public class TextGenerationParameters : ITextGenerationParameters
     /// <inheritdoc />
     public float? RepetitionPenalty { get; set; }
 
+    /// <inheritdoc />
+    public float? PresencePenalty { get; set; }
+
     /// <inheritdoc />
     public float? Temperature { get; set; }
 

src/Cnblogs.DashScope.Core/ToolChoice.cs

@@ -1,6 +1,47 @@
-namespace Cnblogs.DashScope.Core;
+using System.Text.Json.Serialization;
+
+namespace Cnblogs.DashScope.Core;
 
 /// <summary>
-/// Specify behavior when model
+/// Specify the behavior for model when tools are applied.
 /// </summary>
-public record ToolChoice();
+[JsonConverter(typeof(ToolChoiceJsonConverter))]
+public record ToolChoice
+{
+    /// <summary>
+    /// Make sure tool choices can not be initiated directly.
+    /// </summary>
+    private ToolChoice(string type, ToolChoiceFunction? function = null)
+    {
+        Type = type;
+        Function = function;
+    }
+
+    /// <summary>
+    /// The type of tool choice.
+    /// </summary>
+    public string Type { get; }
+
+    /// <summary>
+    /// The function that model must call.
+    /// </summary>
+    public ToolChoiceFunction? Function { get; }
+
+    /// <summary>
+    /// Model can not call any tools.
+    /// </summary>
+    public static readonly ToolChoice NoneChoice = new("none");
+
+    /// <summary>
+    /// Model can freely pick between generating a message or calling one or more tools.
+    /// </summary>
+    public static readonly ToolChoice AutoChoice = new("auto");
+
+    /// <summary>
+    /// Model must call function with specified name.
+    /// </summary>
+    /// <param name="functionName">Name of function.</param>
+    /// <returns></returns>
+    public static ToolChoice FunctionChoice(string functionName)
+        => new("function", new ToolChoiceFunction(functionName));
+}

src/Cnblogs.DashScope.Core/ToolChoiceFunction.cs

@@ -0,0 +1,7 @@
+namespace Cnblogs.DashScope.Core;
+
+/// <summary>
+/// Represents functions that model must call.
+/// </summary>
+/// <param name="Name">The name of the function.</param>
+public record ToolChoiceFunction(string Name);

src/Cnblogs.DashScope.Core/ToolChoiceJsonConverter.cs

@@ -0,0 +1,69 @@
+using System.Text.Json;
+using System.Text.Json.Serialization;
+
+namespace Cnblogs.DashScope.Core;
+
+/// <summary>
+/// The converter for <see cref="ToolChoice"/>
+/// </summary>
+public class ToolChoiceJsonConverter : JsonConverter<ToolChoice>
+{
+    /// <inheritdoc />
+    public override ToolChoice? Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
+    {
+        if (reader.TokenType == JsonTokenType.String)
+        {
+            var str = reader.GetString();
+            return str switch
+            {
+                "auto" => ToolChoice.AutoChoice,
+                "none" => ToolChoice.NoneChoice,
+                _ => throw new JsonException("Unknown tool choice type")
+            };
+        }
+
+        if (reader.TokenType == JsonTokenType.Null)
+        {
+            return null;
+        }
+
+        if (reader.TokenType != JsonTokenType.StartObject)
+        {
+            throw new JsonException("Unknown tool choice.");
+        }
+
+        var element = JsonSerializer.Deserialize<JsonElement>(ref reader, options);
+        var functionValid = element.TryGetProperty("function", out var function);
+        var typeValid = element.TryGetProperty("type", out var type);
+        if (functionValid == false || typeValid == false || type.ValueKind != JsonValueKind.String)
+        {
+            throw new JsonException("Unknown tool choice type");
+        }
+
+        var toolFunction = function.Deserialize<ToolChoiceFunction>(options);
+        var toolChoiceType = type.GetString();
+        if (toolFunction == null || toolChoiceType != "function")
+        {
+            throw new JsonException("Unknown tool choice type");
+        }
+
+        return ToolChoice.FunctionChoice(toolFunction.Name);
+    }
+
+    /// <inheritdoc />
+    public override void Write(Utf8JsonWriter writer, ToolChoice value, JsonSerializerOptions options)
+    {
+        if (value.Type != "function")
+        {
+            writer.WriteStringValue(value.Type);
+        }
+        else
+        {
+            writer.WriteStartObject();
+            writer.WriteString("type", value.Type);
+            writer.WritePropertyName("function");
+            JsonSerializer.Serialize(writer, value.Function, options);
+            writer.WriteEndObject();
+        }
+    }
+}

test/Cnblogs.DashScope.Sdk.UnitTests/RawHttpData/multimodal-generation-vl-nosse.request.body.json

@@ -20,6 +20,12 @@
   "parameters": {
     "seed": 1234,
     "top_k": 100,
-    "top_p": 0.81
+    "top_p": 0.81,
+    "vl_high_resolution_images": true,
+    "temperature": 1.1,
+    "repetition_penalty": 1.3,
+    "presence_penalty": 1.2,
+    "max_tokens": 120,
+    "stop": "你好"
   }
 }

test/Cnblogs.DashScope.Sdk.UnitTests/RawHttpData/multimodal-generation-vl-nosse.response.body.txt

@@ -1 +1 @@
-{"output":{"choices":[{"finish_reason":"stop","message":{"role":"assistant","content":[{"text":"这张照片显示的是海滩景色，但是无法确定具体的位置信息。图中有一名女子和一只狗在沙滩上互动。背景中有海洋和日出或日落的光线。由于缺乏特定地标或者细节特征，仅凭此图像很难精确识别具体的地点。"}]}}]},"usage":{"output_tokens":58,"input_tokens":1284,"image_tokens":1247},"request_id":"a2a5f2e6-c6d7-9e04-9f92-1d3eee274198"}
+{"output":{"choices":[{"finish_reason":"stop","message":{"role":"assistant","content":[{"text":"这是在海滩上。"}]}}]},"usage":{"output_tokens":6,"input_tokens":3613,"image_tokens":3577},"request_id":"e74b364a-034f-9d0d-8e55-8e5b3580045f"}

test/Cnblogs.DashScope.Sdk.UnitTests/RawHttpData/multimodal-generation-vl-nosse.response.header.txt

@@ -1,13 +1,15 @@
-HTTP/1.1 200 OK
-eagleeye-traceid: cf6954f685a19435530858304250b3bc
-content-type: application/json
+HTTP/1.1 200 OK
+eagleeye-traceid: c72728928fd0d00883f6edd204cc6721
+Vary: Origin,Access-Control-Request-Method,Access-Control-Request-Headers,Accept-Encoding
+X-Request-ID: e74b364a-034f-9d0d-8e55-8e5b3580045f
+x-dashscope-timeout: 180
 x-dashscope-call-gateway: true
-req-cost-time: 4359
-req-arrive-time: 1709019927268
-resp-start-time: 1709019931627
-x-envoy-upstream-service-time: 4353
-content-encoding: gzip
-vary: Accept-Encoding
-date: Tue, 27 Feb 2024 07:45:31 GMT
-server: istio-envoy
-transfer-encoding: chunked
+x-dashscope-finished: true
+req-cost-time: 3064
+req-arrive-time: 1732531979928
+resp-start-time: 1732531982993
+x-envoy-upstream-service-time: 3054
+Set-Cookie: acw_tc=e74b364a-034f-9d0d-8e55-8e5b3580045f47b5c24e3af603d8590358e45e4696a6;path=/;HttpOnly;Max-Age=1800
+Date: Mon, 25 Nov 2024 10:53:02 GMT
+Server: istio-envoy
+Transfer-Encoding: chunked

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

@@ -15,8 +15,9 @@
     "top_p": 0.8,
     "top_k": 100,
     "repetition_penalty": 1.1,
+    "presence_penalty": 1.2,
     "temperature": 0.85,
-    "stop": [[37763, 367]],
+    "stop": "你好",
     "enable_search": false,
     "incremental_output": false,
     "tools": [
@@ -46,6 +47,12 @@
           }
         }
       }
-    ]
+    ],
+    "tool_choice": {
+      "type": "function",
+      "function": {
+        "name": "get_current_weather"
+      }
+    }
   }
 }

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

@@ -1 +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"}
+{"output":{"choices":[{"finish_reason":"stop","message":{"role":"assistant","tool_calls":[{"function":{"name":"get_current_weather","arguments":"{\"location\": \"浙江省杭州市\"}"},"index":0,"id":"call_cec4c19d27624537b583af","type":"function"}],"content":""}}]},"usage":{"total_tokens":219,"output_tokens":8,"input_tokens":211},"request_id":"67300049-c108-9987-b1c1-8e0ee2de6b5d"}