feat: support replicate chat models (#1989)

* feat: add Replicate adaptor and integrate into channel and API types

* feat: support llm chat on replicate

relay/adaptor/replicate/model.go

@@ -0,0 +1,159 @@
+package replicate
+
+import (
+	"time"
+
+	"github.com/pkg/errors"
+)
+
+// DrawImageRequest draw image by fluxpro
+//
+// https://replicate.com/black-forest-labs/flux-pro?prediction=kg1krwsdf9rg80ch1sgsrgq7h8&output=json
+type DrawImageRequest struct {
+	Input ImageInput `json:"input"`
+}
+
+// ImageInput is input of DrawImageByFluxProRequest
+//
+// https://replicate.com/black-forest-labs/flux-1.1-pro/api/schema
+type ImageInput struct {
+	Steps           int    `json:"steps" binding:"required,min=1"`
+	Prompt          string `json:"prompt" binding:"required,min=5"`
+	ImagePrompt     string `json:"image_prompt"`
+	Guidance        int    `json:"guidance" binding:"required,min=2,max=5"`
+	Interval        int    `json:"interval" binding:"required,min=1,max=4"`
+	AspectRatio     string `json:"aspect_ratio" binding:"required,oneof=1:1 16:9 2:3 3:2 4:5 5:4 9:16"`
+	SafetyTolerance int    `json:"safety_tolerance" binding:"required,min=1,max=5"`
+	Seed            int    `json:"seed"`
+	NImages         int    `json:"n_images" binding:"required,min=1,max=8"`
+	Width           int    `json:"width" binding:"required,min=256,max=1440"`
+	Height          int    `json:"height" binding:"required,min=256,max=1440"`
+}
+
+// InpaintingImageByFlusReplicateRequest is request to inpainting image by flux pro
+//
+// https://replicate.com/black-forest-labs/flux-fill-pro/api/schema
+type InpaintingImageByFlusReplicateRequest struct {
+	Input FluxInpaintingInput `json:"input"`
+}
+
+// FluxInpaintingInput is input of DrawImageByFluxProRequest
+//
+// https://replicate.com/black-forest-labs/flux-fill-pro/api/schema
+type FluxInpaintingInput struct {
+	Mask             string `json:"mask" binding:"required"`
+	Image            string `json:"image" binding:"required"`
+	Seed             int    `json:"seed"`
+	Steps            int    `json:"steps" binding:"required,min=1"`
+	Prompt           string `json:"prompt" binding:"required,min=5"`
+	Guidance         int    `json:"guidance" binding:"required,min=2,max=5"`
+	OutputFormat     string `json:"output_format"`
+	SafetyTolerance  int    `json:"safety_tolerance" binding:"required,min=1,max=5"`
+	PromptUnsampling bool   `json:"prompt_unsampling"`
+}
+
+// ImageResponse is response of DrawImageByFluxProRequest
+//
+// https://replicate.com/black-forest-labs/flux-pro?prediction=kg1krwsdf9rg80ch1sgsrgq7h8&output=json
+type ImageResponse struct {
+	CompletedAt time.Time        `json:"completed_at"`
+	CreatedAt   time.Time        `json:"created_at"`
+	DataRemoved bool             `json:"data_removed"`
+	Error       string           `json:"error"`
+	ID          string           `json:"id"`
+	Input       DrawImageRequest `json:"input"`
+	Logs        string           `json:"logs"`
+	Metrics     FluxMetrics      `json:"metrics"`
+	// Output could be `string` or `[]string`
+	Output    any       `json:"output"`
+	StartedAt time.Time `json:"started_at"`
+	Status    string    `json:"status"`
+	URLs      FluxURLs  `json:"urls"`
+	Version   string    `json:"version"`
+}
+
+func (r *ImageResponse) GetOutput() ([]string, error) {
+	switch v := r.Output.(type) {
+	case string:
+		return []string{v}, nil
+	case []string:
+		return v, nil
+	case nil:
+		return nil, nil
+	case []interface{}:
+		// convert []interface{} to []string
+		ret := make([]string, len(v))
+		for idx, vv := range v {
+			if vvv, ok := vv.(string); ok {
+				ret[idx] = vvv
+			} else {
+				return nil, errors.Errorf("unknown output type: [%T]%v", vv, vv)
+			}
+		}
+
+		return ret, nil
+	default:
+		return nil, errors.Errorf("unknown output type: [%T]%v", r.Output, r.Output)
+	}
+}
+
+// FluxMetrics is metrics of ImageResponse
+type FluxMetrics struct {
+	ImageCount  int     `json:"image_count"`
+	PredictTime float64 `json:"predict_time"`
+	TotalTime   float64 `json:"total_time"`
+}
+
+// FluxURLs is urls of ImageResponse
+type FluxURLs struct {
+	Get    string `json:"get"`
+	Cancel string `json:"cancel"`
+}
+
+type ReplicateChatRequest struct {
+	Input ChatInput `json:"input" form:"input" binding:"required"`
+}
+
+// ChatInput is input of ChatByReplicateRequest
+//
+// https://replicate.com/meta/meta-llama-3.1-405b-instruct/api/schema
+type ChatInput struct {
+	TopK             int     `json:"top_k"`
+	TopP             float64 `json:"top_p"`
+	Prompt           string  `json:"prompt"`
+	MaxTokens        int     `json:"max_tokens"`
+	MinTokens        int     `json:"min_tokens"`
+	Temperature      float64 `json:"temperature"`
+	SystemPrompt     string  `json:"system_prompt"`
+	StopSequences    string  `json:"stop_sequences"`
+	PromptTemplate   string  `json:"prompt_template"`
+	PresencePenalty  float64 `json:"presence_penalty"`
+	FrequencyPenalty float64 `json:"frequency_penalty"`
+}
+
+// ChatResponse is response of ChatByReplicateRequest
+//
+// https://replicate.com/meta/meta-llama-3.1-405b-instruct/examples?input=http&output=json
+type ChatResponse struct {
+	CompletedAt time.Time   `json:"completed_at"`
+	CreatedAt   time.Time   `json:"created_at"`
+	DataRemoved bool        `json:"data_removed"`
+	Error       string      `json:"error"`
+	ID          string      `json:"id"`
+	Input       ChatInput   `json:"input"`
+	Logs        string      `json:"logs"`
+	Metrics     FluxMetrics `json:"metrics"`
+	// Output could be `string` or `[]string`
+	Output    []string        `json:"output"`
+	StartedAt time.Time       `json:"started_at"`
+	Status    string          `json:"status"`
+	URLs      ChatResponseUrl `json:"urls"`
+	Version   string          `json:"version"`
+}
+
+// ChatResponseUrl is task urls of ChatResponse
+type ChatResponseUrl struct {
+	Stream string `json:"stream"`
+	Get    string `json:"get"`
+	Cancel string `json:"cancel"`
+}