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Merge pull request #23 from cloud-apim/gemini-provider
Gemini provider
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src/main/scala/com/cloud/apim/otoroshi/extensions/aigateway/providers/gemini.scala
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,124 @@ | ||
| package com.cloud.apim.otoroshi.extensions.aigateway.providers | ||
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| import com.cloud.apim.otoroshi.extensions.aigateway._ | ||
| import dev.langchain4j.data.segment.TextSegment | ||
| import dev.langchain4j.store.embedding.inmemory.InMemoryEmbeddingStore | ||
| import otoroshi.env.Env | ||
| import otoroshi.utils.TypedMap | ||
| import otoroshi.utils.syntax.implicits._ | ||
| import play.api.libs.json.{JsObject, JsValue, Json} | ||
| import dev.langchain4j.model.embedding.onnx.allminilml6v2.AllMiniLmL6V2EmbeddingModel | ||
| import dev.langchain4j.store.embedding.EmbeddingSearchRequest | ||
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|
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| import scala.concurrent.duration.{DurationInt, FiniteDuration} | ||
| import scala.concurrent.{ExecutionContext, Future} | ||
| import scala.jdk.CollectionConverters.asScalaBufferConverter | ||
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| case class GeminiApiResponse(status: Int, headers: Map[String, String], body: JsValue) { | ||
| def json: JsValue = Json.obj( | ||
| "status" -> status, | ||
| "headers" -> headers, | ||
| "body" -> body, | ||
| ) | ||
| } | ||
| object GeminiModels { | ||
| val GEMINI_1_5_FLASH = "gemini-1.5-flash" | ||
| } | ||
|
|
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| object GeminiApi { | ||
| def url(model: String, token: String): String = { | ||
| s"https://generativelanguage.googleapis.com/v1beta/models/${model}:generateContent?key=${token}" | ||
| } | ||
| } | ||
|
|
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| class GeminiApi(model: String, token: String, timeout: FiniteDuration = 10.seconds, env: Env) { | ||
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| def call(method: String, body: Option[JsValue])(implicit ec: ExecutionContext): Future[GeminiApiResponse] = { | ||
| env.Ws | ||
| .url(s"${GeminiApi.url(model, token)}") | ||
| .withHttpHeaders( | ||
| "Accept" -> "application/json", | ||
| ).applyOnWithOpt(body) { | ||
| case (builder, body) => builder | ||
| .addHttpHeaders("Content-Type" -> "application/json") | ||
| .withBody(body) | ||
| } | ||
| .withMethod(method) | ||
| .withRequestTimeout(timeout) | ||
| .execute() | ||
| .map { resp => | ||
| GeminiApiResponse(resp.status, resp.headers.mapValues(_.last), resp.json) | ||
| } | ||
| } | ||
| } | ||
|
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| object GeminiChatClientOptions { | ||
| def fromJson(json: JsValue): GeminiChatClientOptions = { | ||
| GeminiChatClientOptions( | ||
| maxOutputTokens = json.select("maxOutputTokens").asOpt[Int], | ||
| temperature = json.select("temperature").asOpt[Float].getOrElse(1.0f), | ||
| topP = json.select("topP").asOpt[Float].getOrElse(0.95f), | ||
| topK = json.select("top_k").asOpt[Int].getOrElse(40), | ||
| stopSequences = json.select("stopSequences").asOpt[Array[String]], | ||
| ) | ||
| } | ||
| } | ||
|
|
||
| case class GeminiChatClientOptions( | ||
| maxOutputTokens: Option[Int] = None, | ||
| temperature: Float = 1, | ||
| topP: Float = 0.95f, | ||
| topK: Int = 1, | ||
| stopSequences: Option[Array[String]] = None | ||
| ) extends ChatOptions { | ||
| override def json: JsObject = Json.obj( | ||
| "maxOutputTokens" -> maxOutputTokens, | ||
| "temperature" -> temperature, | ||
| "topP" -> topP, | ||
| "topK" -> topK, | ||
| "stopSequences" -> stopSequences | ||
| ) | ||
| } | ||
|
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| class GeminiChatClient(api: GeminiApi, options: GeminiChatClientOptions, id: String) extends ChatClient { | ||
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| override def call(prompt: ChatPrompt, attrs: TypedMap)(implicit ec: ExecutionContext, env: Env): Future[Either[JsValue, ChatResponse]] = { | ||
| val mergedOptions = options.json.deepMerge(prompt.options.map(_.json).getOrElse(Json.obj())) | ||
| api.call("POST", Some(mergedOptions ++ Json.obj( | ||
| "contents" -> Json.obj("parts" -> prompt.json), | ||
| "generationConfig" -> options.json | ||
| ))).map { resp => | ||
| val usage = ChatResponseMetadata( | ||
| ChatResponseMetadataRateLimit.empty, | ||
| ChatResponseMetadataUsage( | ||
| promptTokens = resp.body.select("usageMetadata").select("promptTokenCount").asOpt[Long].getOrElse(-1L), | ||
| generationTokens = resp.body.select("usageMetadata").select("totalTokenCount").asOpt[Long].getOrElse(-1L), | ||
| ), | ||
| ) | ||
| val duration: Long = resp.headers.getIgnoreCase("gemini-processing-ms").map(_.toLong).getOrElse(0L) | ||
| val slug = Json.obj( | ||
| "provider_kind" -> "gemini", | ||
| "provider" -> id, | ||
| "duration" -> duration, | ||
| "rate_limit" -> usage.rateLimit.json, | ||
| "usage" -> usage.usage.json | ||
| ) | ||
| attrs.update(ChatClient.ApiUsageKey -> usage) | ||
| attrs.update(otoroshi.plugins.Keys.ExtraAnalyticsDataKey) { | ||
| case Some(obj@JsObject(_)) => { | ||
| val arr = obj.select("ai").asOpt[Seq[JsObject]].getOrElse(Seq.empty) | ||
| val newArr = arr ++ Seq(slug) | ||
| obj ++ Json.obj("ai" -> newArr) | ||
| } | ||
| case Some(other) => other | ||
| case None => Json.obj("ai" -> Seq(slug)) | ||
| } | ||
| val messages = resp.body.select("candidates").asOpt[Seq[JsObject]].getOrElse(Seq.empty).map { obj => | ||
| val role = obj.select("content").select("role").asOpt[String].getOrElse("user") | ||
| val content = obj.select("content").select("parts").asOpt[Seq[String]].getOrElse(Seq.empty).mkString(" ") | ||
| ChatGeneration(ChatMessage(role, content)) | ||
| } | ||
| Right(ChatResponse(messages, usage)) | ||
| } | ||
| } | ||
| } |