483 lines
15 KiB
Go
483 lines
15 KiB
Go
// 模型能力规格（CapabilitySpec）的解码、规范化与匹配。
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//
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// 一次生成请求先被归一成 ModelRequestIntent（模式、尺寸、时长、参考图数量等），
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// 再逐个路由比对能力规格：输入约束（参考图/视频/音频数量）与选项约束（尺寸、比例、质量）
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// 都满足才算可用。这里是纯函数，不读数据库。
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package app
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import (
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"encoding/json"
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"fmt"
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"math"
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"strconv"
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"strings"
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"time"
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"infinite-canvas/backend/internal/model"
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)
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type CapabilityImageSizePreset struct {
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Size string `json:"size"`
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Tier string `json:"tier"`
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Ratio string `json:"ratio"`
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Width int `json:"width"`
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Height int `json:"height"`
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}
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type CapabilityImageSize struct {
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Parameter string `json:"parameter,omitempty"`
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AllowCustom bool `json:"allowCustom,omitempty"`
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Presets []CapabilityImageSizePreset `json:"presets,omitempty"`
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}
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type CapabilitySpec struct {
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Version int `json:"version"`
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Capability string `json:"capability"`
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Operations []string `json:"operations,omitempty"`
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Inputs map[string]InputConstraint `json:"inputs,omitempty"`
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Options map[string]OptionConstraint `json:"options,omitempty"`
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ImageSize *CapabilityImageSize `json:"imageSize,omitempty"`
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}
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type InputConstraint struct {
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Min int `json:"min"`
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Max int `json:"max"`
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}
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type OptionConstraint struct {
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Values []any `json:"values,omitempty"`
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Min *float64 `json:"min,omitempty"`
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Max *float64 `json:"max,omitempty"`
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Step *float64 `json:"step,omitempty"`
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}
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type ModelRequestIntent struct {
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Capability string `json:"capability"`
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Operation string `json:"operation,omitempty"`
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Inputs map[string]int `json:"inputs,omitempty"`
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Options map[string]any `json:"options,omitempty"`
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}
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// ModelRequestIntentFromTaskInput 从统一任务输入推导路由意图；它只统计实际输入和显式参数，不假设任何固定图片数或视频时长。
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func ModelRequestIntentFromTaskInput(input map[string]any, taskType string, operation string) ModelRequestIntent {
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capability := normalizeCapability(fmt.Sprint(input["mode"]))
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if capability == "" {
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capability = capabilityFromTaskType(taskType)
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}
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intent := ModelRequestIntent{Capability: capability, Operation: strings.TrimSpace(operation), Inputs: map[string]int{}, Options: map[string]any{}}
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for inputType, key := range map[string]string{"image": "referenceImages", "video": "referenceVideos", "audio": "referenceAudios"} {
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if values, ok := input[key].([]any); ok {
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intent.Inputs[inputType] = len(values)
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}
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}
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if mask, exists := input["mask"]; exists && mask != nil {
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intent.Inputs["mask"] = 1
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}
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explicitOptions := false
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if options, ok := input["capabilityOptions"].(map[string]any); ok {
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explicitOptions = true
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for key, value := range options {
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name := canonicalCapabilityOptionName(key)
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// auto/any 表示调用方不指定质量；不能把它当作模型必须声明的
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// 枚举值，否则未列出 auto 的模型会被错误判定为参数不支持。
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if name == "quality" {
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if normalized, ok := value.(string); ok && (strings.EqualFold(strings.TrimSpace(normalized), "auto") || strings.EqualFold(strings.TrimSpace(normalized), "any")) {
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continue
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}
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}
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intent.Options[name] = normalizeModelRequestOption(name, value)
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}
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}
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if config, ok := input["config"].(map[string]any); ok && !explicitOptions {
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for key, value := range config {
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switch key {
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case "channelId", "apiFormat", "interfaceType", "baseUrl", "apiKey", "secretKey", "headers", "model", "capabilityConfig":
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continue
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default:
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canonical := canonicalCapabilityOptionName(key)
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if isCapabilityOptionFor(capability, canonical) && value != nil && strings.TrimSpace(fmt.Sprint(value)) != "" {
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intent.Options[canonical] = normalizeModelRequestOption(canonical, value)
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}
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}
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}
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}
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return intent
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}
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func normalizeModelRequestOption(name string, value any) any {
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canonicalName := canonicalCapabilityOptionName(name)
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if canonicalName == "quality" || canonicalName == "size" {
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if text, ok := value.(string); ok {
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return strings.ToLower(strings.TrimSpace(text))
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}
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return value
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}
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if canonicalName != "vquality" {
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return value
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}
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resolution, ok := value.(string)
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if !ok {
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return value
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}
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switch strings.ToLower(strings.TrimSpace(resolution)) {
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case "low", "480", "480p":
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return "480p"
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case "720", "720p":
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return "720p"
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case "1080", "1080p":
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return "1080p"
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case "2k", "1440", "1440p":
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return "1440p"
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case "4k", "2160", "2160p":
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return "2160p"
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default:
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// Providers expose additional resolutions such as 768P and 960P.
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// Canonicalize numeric P values generically so billing selectors match
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// regardless of whether the client sends "960" or "960P".
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pixels := strings.TrimSuffix(strings.ToLower(strings.TrimSpace(resolution)), "p")
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if numeric, err := strconv.Atoi(pixels); err == nil && numeric > 0 {
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return strconv.Itoa(numeric) + "p"
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}
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return value
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}
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}
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type CapabilityMatch struct {
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Matched bool `json:"matched"`
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Reasons []string `json:"reasons,omitempty"`
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}
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type cachedLogicalModel struct {
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Model model.LogicalModel
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Revision model.LogicalModelRevision
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ProductSpec CapabilitySpec
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Defaults map[string]any
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Routes []cachedLogicalRoute
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}
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type cachedLogicalRoute struct {
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Route model.LogicalModelRoute
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CapabilitySpec CapabilitySpec
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ChannelModel model.ChannelModel
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}
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type routeCatalogSnapshot struct {
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LoadedAt time.Time
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CatalogVersion int64
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Models map[string]cachedLogicalModel
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Ordered []string
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}
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type RoutedModel struct {
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LogicalModel model.LogicalModel
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Revision model.LogicalModelRevision
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Route model.LogicalModelRoute
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ChannelModel model.ChannelModel
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PriceTier *model.ChannelModelPriceTier
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Defaults map[string]any
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}
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func DecodeCapabilitySpec(raw string) (CapabilitySpec, error) {
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var spec CapabilitySpec
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if err := json.Unmarshal([]byte(raw), &spec); err != nil {
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return spec, BadAuthRequest("能力配置不是有效 JSON")
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}
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normalized, err := NormalizeCapabilitySpec(spec)
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if err != nil {
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return spec, err
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}
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return normalized, nil
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}
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func ValidateCapabilitySpec(spec CapabilitySpec) error {
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_, err := NormalizeCapabilitySpec(spec)
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return err
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}
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func NormalizeCapabilitySpec(spec CapabilitySpec) (CapabilitySpec, error) {
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spec.Capability = normalizeCapability(spec.Capability)
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if spec.Version != 1 {
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return spec, BadAuthRequest("能力配置 version 必须为 1")
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}
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if spec.Capability == "" {
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return spec, BadAuthRequest("能力配置必须声明 capability")
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}
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operations := make([]string, 0, len(spec.Operations))
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seenOperations := make(map[string]bool, len(spec.Operations))
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for _, operation := range spec.Operations {
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normalized := normalizeCapabilityValue(operation)
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if normalized != "" && !seenOperations[normalized] {
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seenOperations[normalized] = true
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operations = append(operations, normalized)
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}
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}
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spec.Operations = operations
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normalizedInputs := make(map[string]InputConstraint, len(spec.Inputs))
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for rawName, constraint := range spec.Inputs {
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name := normalizeCapabilityValue(rawName)
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if name == "" || constraint.Min < 0 || constraint.Max < constraint.Min {
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return spec, BadAuthRequest("输入能力范围无效")
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}
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if _, exists := normalizedInputs[name]; exists {
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return spec, BadAuthRequest("输入能力存在重复名称：" + name)
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}
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normalizedInputs[name] = constraint
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}
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spec.Inputs = normalizedInputs
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normalizedOptions := make(map[string]OptionConstraint, len(spec.Options))
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for rawName, constraint := range spec.Options {
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name := canonicalCapabilityOptionName(rawName)
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if strings.TrimSpace(name) == "" {
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return spec, BadAuthRequest("能力参数名称不能为空")
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}
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if _, exists := normalizedOptions[name]; exists {
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return spec, BadAuthRequest("能力参数存在重复别名：" + name)
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}
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hasValues := len(constraint.Values) > 0
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hasRange := constraint.Min != nil || constraint.Max != nil || constraint.Step != nil
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if !hasValues && !hasRange {
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return spec, BadAuthRequest("能力参数必须声明 values 或数值范围")
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}
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if hasValues && hasRange {
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return spec, BadAuthRequest("能力参数不能同时声明 values 和数值范围")
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}
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if hasRange && (constraint.Min == nil || constraint.Max == nil) {
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return spec, BadAuthRequest("数值范围必须同时声明 min 和 max")
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}
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if constraint.Min != nil && constraint.Max != nil && *constraint.Max < *constraint.Min {
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return spec, BadAuthRequest("能力参数数值范围无效")
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}
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if constraint.Step != nil && *constraint.Step <= 0 {
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return spec, BadAuthRequest("能力参数 step 必须大于 0")
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}
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normalizedOptions[name] = constraint
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}
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spec.Options = normalizedOptions
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return spec, nil
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}
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func decodeLogicalDefaults(raw string, spec CapabilitySpec) (map[string]any, error) {
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defaults := map[string]any{}
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if err := json.Unmarshal([]byte(raw), &defaults); err != nil {
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return nil, err
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}
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return normalizeLogicalDefaults(spec, defaults)
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}
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func MatchCapability(spec CapabilitySpec, intent ModelRequestIntent) CapabilityMatch {
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reasons := make([]string, 0)
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if normalizeCapability(intent.Capability) != normalizeCapability(spec.Capability) {
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reasons = append(reasons, "能力类型不匹配")
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}
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if operation := normalizeCapabilityValue(intent.Operation); operation != "" && len(spec.Operations) > 0 && !containsNormalized(spec.Operations, operation) {
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reasons = append(reasons, "不支持操作 "+intent.Operation)
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}
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for inputType, count := range intent.Inputs {
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if count < 0 {
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reasons = append(reasons, "输入数量不能小于 0")
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continue
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}
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constraint, declared := spec.Inputs[inputType]
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if !declared {
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if count > 0 {
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reasons = append(reasons, "不支持 "+capabilityInputLabel(inputType)+"输入")
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}
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continue
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}
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if count < constraint.Min || count > constraint.Max {
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reasons = append(reasons, fmt.Sprintf("%s数量需在 %d-%d 之间", capabilityInputLabel(inputType), constraint.Min, constraint.Max))
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}
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}
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for inputType, constraint := range spec.Inputs {
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if intent.Inputs[inputType] < constraint.Min {
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reasons = append(reasons, fmt.Sprintf("至少需要 %d 个%s", constraint.Min, capabilityInputLabel(inputType)))
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}
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}
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for name, value := range intent.Options {
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constraint, declared := spec.Options[canonicalCapabilityOptionName(name)]
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if !declared {
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reasons = append(reasons, "不支持参数 "+capabilityOptionLabel(name))
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continue
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}
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if !matchOptionConstraint(name, constraint, value) {
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reasons = append(reasons, "参数 "+capabilityOptionLabel(name)+"超出支持范围")
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}
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}
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return CapabilityMatch{Matched: len(reasons) == 0, Reasons: reasons}
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}
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func capabilityInputLabel(name string) string {
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switch normalizeCapabilityValue(name) {
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case "image":
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return "参考图片"
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case "video":
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return "参考视频"
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case "audio":
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return "参考音频"
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case "mask":
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return "蒙版"
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default:
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return name
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}
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}
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func capabilityOptionLabel(name string) string {
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switch canonicalCapabilityOptionName(name) {
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case "size":
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return "画面尺寸"
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case "quality":
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return "生成质量"
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case "transparentBackground":
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return "透明背景"
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case "count":
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return "输出数量"
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case "videoSeconds":
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return "视频时长"
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case "vquality":
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return "输出分辨率"
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case "videoGenerateAudio":
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return "同步音频"
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case "videoWatermark":
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return "水印设置"
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case "audioVoice":
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return "音色"
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case "audioFormat":
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return "音频格式"
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case "audioSpeed":
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return "语速"
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case "audioInstructions":
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return "朗读指令"
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default:
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return name
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}
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}
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func matchOptionConstraint(name string, constraint OptionConstraint, value any) bool {
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if len(constraint.Values) > 0 {
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for _, candidate := range constraint.Values {
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if normalizedScalar(candidate) == "*" {
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return true
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}
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if capabilityOptionValuesEqual(name, candidate, value) {
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return true
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}
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}
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return false
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}
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number, ok := numericScalar(value)
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if !ok {
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return false
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}
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if constraint.Min != nil && number < *constraint.Min {
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return false
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}
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if constraint.Max != nil && number > *constraint.Max {
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return false
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}
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if constraint.Step != nil && constraint.Min != nil {
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steps := (number - *constraint.Min) / *constraint.Step
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return math.Abs(steps-math.Round(steps)) < 1e-9
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}
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return true
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}
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func capabilityOptionValuesEqual(name string, candidate any, value any) bool {
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left := normalizedScalar(candidate)
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right := normalizedScalar(value)
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if canonicalCapabilityOptionName(name) == "vquality" {
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// Compare using the same aliases as request intents and price tiers.
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left = strings.TrimSuffix(normalizedScalar(normalizeModelRequestOption(name, left)), "p")
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right = strings.TrimSuffix(normalizedScalar(normalizeModelRequestOption(name, right)), "p")
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}
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return left == right
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}
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func normalizedScalar(value any) string {
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switch typed := value.(type) {
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case string:
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return normalizeCapabilityValue(typed)
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case bool:
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return strconv.FormatBool(typed)
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case float64:
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return strconv.FormatFloat(typed, 'f', -1, 64)
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case float32:
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return strconv.FormatFloat(float64(typed), 'f', -1, 64)
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case int:
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return strconv.Itoa(typed)
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case int64:
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return strconv.FormatInt(typed, 10)
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default:
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encoded, _ := json.Marshal(value)
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return string(encoded)
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}
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}
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func numericScalar(value any) (float64, bool) {
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switch typed := value.(type) {
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case float64:
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return typed, true
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case float32:
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return float64(typed), true
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case int:
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return float64(typed), true
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case int64:
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return float64(typed), true
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case json.Number:
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parsed, err := typed.Float64()
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return parsed, err == nil
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case string:
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parsed, err := strconv.ParseFloat(strings.TrimSpace(typed), 64)
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return parsed, err == nil
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default:
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return 0, false
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}
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}
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func containsNormalized(values []string, expected string) bool {
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for _, value := range values {
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if normalizeCapabilityValue(value) == expected {
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return true
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}
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}
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return false
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}
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func normalizeCapabilityValue(value string) string {
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return strings.ToLower(strings.TrimSpace(value))
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}
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func canonicalCapabilityOptionName(value string) string {
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name := strings.TrimSpace(value)
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switch name {
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case "duration":
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return "videoSeconds"
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case "aspectRatio":
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return "size"
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case "resolution":
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return "vquality"
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default:
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return name
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}
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}
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func isCapabilityOptionFor(capability string, name string) bool {
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switch normalizeCapability(capability) {
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case "image":
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return name == "size" || name == "quality" || name == "transparentBackground" || name == "count"
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case "video":
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return name == "size" || name == "videoSeconds" || name == "vquality" || name == "videoGenerateAudio" || name == "videoWatermark"
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case "audio":
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return name == "audioVoice" || name == "audioFormat" || name == "audioSpeed" || name == "audioInstructions"
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case "text":
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// systemPrompt 是请求内容，不是供应线路能力维度，不能参与路由匹配。
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return false
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default:
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return false
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}
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}
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func isProviderCapabilityOption(name string) bool {
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return isCapabilityOptionFor("image", name) || isCapabilityOptionFor("video", name) || isCapabilityOptionFor("audio", name) || isCapabilityOptionFor("text", name)
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}
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