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refactor(claude): move max_tokens constraint enforcement to Apply method

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This commit is contained in:
hkfires
2026-01-19 15:50:35 +08:00
parent 2542c2920d
commit c421d653e7
2 changed files with 45 additions and 82 deletions
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82
internal/runtime/executor/claude_executor.go
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@@ -17,7 +17,6 @@ import (
claudeauth "github.com/router-for-me/CLIProxyAPI/v6/internal/auth/claude"
"github.com/router-for-me/CLIProxyAPI/v6/internal/config"
"github.com/router-for-me/CLIProxyAPI/v6/internal/misc"
"github.com/router-for-me/CLIProxyAPI/v6/internal/registry"
"github.com/router-for-me/CLIProxyAPI/v6/internal/thinking"
"github.com/router-for-me/CLIProxyAPI/v6/internal/util"
cliproxyauth "github.com/router-for-me/CLIProxyAPI/v6/sdk/cliproxy/auth"
@@ -119,9 +118,6 @@ func (e *ClaudeExecutor) Execute(ctx context.Context, auth *cliproxyauth.Auth, r
// Disable thinking if tool_choice forces tool use (Anthropic API constraint)
body = disableThinkingIfToolChoiceForced(body)
// Ensure max_tokens > thinking.budget_tokens when thinking is enabled
body = ensureMaxTokensForThinking(baseModel, body)
// Extract betas from body and convert to header
var extraBetas []string
extraBetas, body = extractAndRemoveBetas(body)
@@ -250,9 +246,6 @@ func (e *ClaudeExecutor) ExecuteStream(ctx context.Context, auth *cliproxyauth.A
// Disable thinking if tool_choice forces tool use (Anthropic API constraint)
body = disableThinkingIfToolChoiceForced(body)
// Ensure max_tokens > thinking.budget_tokens when thinking is enabled
body = ensureMaxTokensForThinking(baseModel, body)
// Extract betas from body and convert to header
var extraBetas []string
extraBetas, body = extractAndRemoveBetas(body)
@@ -541,81 +534,6 @@ func disableThinkingIfToolChoiceForced(body []byte) []byte {
return body
}
// ensureMaxTokensForThinking ensures max_tokens > thinking.budget_tokens when thinking is enabled.
// Anthropic API requires this constraint; violating it returns a 400 error.
// This function should be called after all thinking configuration is finalized.
// It looks up the model's MaxCompletionTokens from the registry to use as the cap.
func ensureMaxTokensForThinking(modelName string, body []byte) []byte {
thinkingType := gjson.GetBytes(body, "thinking.type").String()
if thinkingType != "enabled" {
return body
}
budgetTokens := gjson.GetBytes(body, "thinking.budget_tokens").Int()
if budgetTokens <= 0 {
return body
}
maxTokens := gjson.GetBytes(body, "max_tokens").Int()
// Look up the model's max completion tokens from the registry
maxCompletionTokens := 0
if modelInfo := registry.LookupModelInfo(modelName); modelInfo != nil {
maxCompletionTokens = modelInfo.MaxCompletionTokens
}
// Fall back to budget + buffer if registry lookup fails or returns 0
const fallbackBuffer = 4000
requiredMaxTokens := budgetTokens + fallbackBuffer
if maxCompletionTokens > 0 {
requiredMaxTokens = int64(maxCompletionTokens)
}
if maxTokens < requiredMaxTokens {
body, _ = sjson.SetBytes(body, "max_tokens", requiredMaxTokens)
}
return body
}
func (e *ClaudeExecutor) resolveClaudeConfig(auth *cliproxyauth.Auth) *config.ClaudeKey {
if auth == nil || e.cfg == nil {
return nil
}
var attrKey, attrBase string
if auth.Attributes != nil {
attrKey = strings.TrimSpace(auth.Attributes["api_key"])
attrBase = strings.TrimSpace(auth.Attributes["base_url"])
}
for i := range e.cfg.ClaudeKey {
entry := &e.cfg.ClaudeKey[i]
cfgKey := strings.TrimSpace(entry.APIKey)
cfgBase := strings.TrimSpace(entry.BaseURL)
if attrKey != "" && attrBase != "" {
if strings.EqualFold(cfgKey, attrKey) && strings.EqualFold(cfgBase, attrBase) {
return entry
}
continue
}
if attrKey != "" && strings.EqualFold(cfgKey, attrKey) {
if cfgBase == "" || strings.EqualFold(cfgBase, attrBase) {
return entry
}
}
if attrKey == "" && attrBase != "" && strings.EqualFold(cfgBase, attrBase) {
return entry
}
}
if attrKey != "" {
for i := range e.cfg.ClaudeKey {
entry := &e.cfg.ClaudeKey[i]
if strings.EqualFold(strings.TrimSpace(entry.APIKey), attrKey) {
return entry
}
}
}
return nil
}
type compositeReadCloser struct {
io.Reader
closers []func() error