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Add Gemini audio model failover logic to handle HTTP 429 rate limits

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Hamza-Ayed
2026-05-22 15:42:30 +03:00
parent df8d905da7
commit 51a3e92980
1 changed files with 50 additions and 43 deletions
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93
backend/app/Services/GeminiService.php
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@@ -218,59 +218,66 @@ class GeminiService
*/ */
public static function generateAudioResponse(string $apiKey, string $systemPrompt, string $userMessage, string $voiceName = 'Puck'): ?array public static function generateAudioResponse(string $apiKey, string $systemPrompt, string $userMessage, string $voiceName = 'Puck'): ?array
{ {
$url = 'https://generativelanguage.googleapis.com/v1beta/models/gemini-3.1-flash-tts-preview:generateContent?key=' . $apiKey; $models = [
'gemini-3.1-flash-tts-preview',
'gemini-2.5-flash-preview-tts'
];
$parts = []; foreach ($models as $model) {
if (!empty($systemPrompt)) { $url = 'https://generativelanguage.googleapis.com/v1beta/models/' . $model . ':generateContent?key=' . $apiKey;
$parts[] = ['text' => "System instruction: " . $systemPrompt];
}
$parts[] = ['text' => $userMessage];
$payload = json_encode([ $parts = [];
'contents' => [ if (!empty($systemPrompt)) {
[ $parts[] = ['text' => "System instruction: " . $systemPrompt];
'role' => 'user', }
'parts' => $parts $parts[] = ['text' => $userMessage];
]
], $payload = json_encode([
'generationConfig' => [ 'contents' => [
'responseModalities' => ['AUDIO'], [
'speechConfig' => [ 'role' => 'user',
'voiceConfig' => [ 'parts' => $parts
'prebuiltVoiceConfig' => [ ]
'voiceName' => $voiceName ],
'generationConfig' => [
'responseModalities' => ['AUDIO'],
'speechConfig' => [
'voiceConfig' => [
'prebuiltVoiceConfig' => [
'voiceName' => $voiceName
]
] ]
] ]
] ]
] ]);
]);
$ch = curl_init($url); $ch = curl_init($url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_POST, true); curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, $payload); curl_setopt($ch, CURLOPT_POSTFIELDS, $payload);
curl_setopt($ch, CURLOPT_HTTPHEADER, [ curl_setopt($ch, CURLOPT_HTTPHEADER, [
'Content-Type: application/json' 'Content-Type: application/json'
]); ]);
curl_setopt($ch, CURLOPT_TIMEOUT, 30); curl_setopt($ch, CURLOPT_TIMEOUT, 30);
$response = curl_exec($ch); $response = curl_exec($ch);
$httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE); $httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
curl_close($ch); curl_close($ch);
if ($httpCode !== 200) { if ($httpCode === 200) {
error_log("[Gemini Audio API Error] HTTP " . $httpCode . " | Response: " . $response); $data = json_decode($response, true);
return null; $part = $data['candidates'][0]['content']['parts'][0] ?? null;
if ($part && isset($part['inlineData'])) {
return [
'audio' => $part['inlineData']['data'],
'mimeType' => $part['inlineData']['mimeType'] ?? 'audio/mp4'
];
}
} else {
error_log("[Gemini Audio API Error] Model " . $model . " failed with HTTP " . $httpCode . " | Response: " . $response);
}
} }
$data = json_decode($response, true);
$part = $data['candidates'][0]['content']['parts'][0] ?? null;
if ($part && isset($part['inlineData'])) {
return [
'audio' => $part['inlineData']['data'],
'mimeType' => $part['inlineData']['mimeType'] ?? 'audio/mp4'
];
}
return null; return null;
} }