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fix: use camelCase systemInstruction in OpenAI-to-Gemini translators

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The Gemini v1internal (cloudcode-pa) and Antigravity Manager endpoints
require camelCase "systemInstruction" in request JSON. The current
snake_case "system_instruction" causes system prompts to be silently
ignored when routing through these endpoints.

Replace all "system_instruction" JSON keys with "systemInstruction" in
chat-completions and responses request translators.
This commit is contained in:
Kirill Turanskiy
2026-03-08 15:59:13 +03:00
parent 4f48e5254a
commit 338321e553
2 changed files with 10 additions and 10 deletions
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14
internal/translator/gemini/openai/chat-completions/gemini_openai_request.go
View File

@@ -147,21 +147,21 @@ func ConvertOpenAIRequestToGemini(modelName string, inputRawJSON []byte, _ bool)
content := m.Get("content")
if (role == "system" || role == "developer") && len(arr) > 1 {
// system -> system_instruction as a user message style
// system -> systemInstruction as a user message style
if content.Type == gjson.String {
out, _ = sjson.SetBytes(out, "system_instruction.role", "user")
out, _ = sjson.SetBytes(out, fmt.Sprintf("system_instruction.parts.%d.text", systemPartIndex), content.String())
out, _ = sjson.SetBytes(out, "systemInstruction.role", "user")
out, _ = sjson.SetBytes(out, fmt.Sprintf("systemInstruction.parts.%d.text", systemPartIndex), content.String())
systemPartIndex++
} else if content.IsObject() && content.Get("type").String() == "text" {
out, _ = sjson.SetBytes(out, "system_instruction.role", "user")
out, _ = sjson.SetBytes(out, fmt.Sprintf("system_instruction.parts.%d.text", systemPartIndex), content.Get("text").String())
out, _ = sjson.SetBytes(out, "systemInstruction.role", "user")
out, _ = sjson.SetBytes(out, fmt.Sprintf("systemInstruction.parts.%d.text", systemPartIndex), content.Get("text").String())
systemPartIndex++
} else if content.IsArray() {
contents := content.Array()
if len(contents) > 0 {
out, _ = sjson.SetBytes(out, "system_instruction.role", "user")
out, _ = sjson.SetBytes(out, "systemInstruction.role", "user")
for j := 0; j < len(contents); j++ {
out, _ = sjson.SetBytes(out, fmt.Sprintf("system_instruction.parts.%d.text", systemPartIndex), contents[j].Get("text").String())
out, _ = sjson.SetBytes(out, fmt.Sprintf("systemInstruction.parts.%d.text", systemPartIndex), contents[j].Get("text").String())
systemPartIndex++
}
}

6
internal/translator/gemini/openai/responses/gemini_openai-responses_request.go
View File

@@ -26,7 +26,7 @@ func ConvertOpenAIResponsesRequestToGemini(modelName string, inputRawJSON []byte
if instructions := root.Get("instructions"); instructions.Exists() {
systemInstr := `{"parts":[{"text":""}]}`
systemInstr, _ = sjson.Set(systemInstr, "parts.0.text", instructions.String())
out, _ = sjson.SetRaw(out, "system_instruction", systemInstr)
out, _ = sjson.SetRaw(out, "systemInstruction", systemInstr)
}
// Convert input messages to Gemini contents format
@@ -119,7 +119,7 @@ func ConvertOpenAIResponsesRequestToGemini(modelName string, inputRawJSON []byte
if strings.EqualFold(itemRole, "system") {
if contentArray := item.Get("content"); contentArray.Exists() {
systemInstr := ""
if systemInstructionResult := gjson.Get(out, "system_instruction"); systemInstructionResult.Exists() {
if systemInstructionResult := gjson.Get(out, "systemInstruction"); systemInstructionResult.Exists() {
systemInstr = systemInstructionResult.Raw
} else {
systemInstr = `{"parts":[]}`
@@ -140,7 +140,7 @@ func ConvertOpenAIResponsesRequestToGemini(modelName string, inputRawJSON []byte
}
if systemInstr != `{"parts":[]}` {
out, _ = sjson.SetRaw(out, "system_instruction", systemInstr)
out, _ = sjson.SetRaw(out, "systemInstruction", systemInstr)
}
}
continue