[FEATURE] Ollama Authentication Header injection

[sraeuchle]

Hey there,

I have run a Ollama Instance behind a Authentication Proxy so i need to send a Authentication Header for every Ollama Request.
In your current OllamaClient implementation I can't handle that in any way. See:

langchain4j/langchain4j-ollama/src/main/java/dev/langchain4j/model/ollama/OllamaClient.java

Line 33 in 057730b

public OllamaClient(String baseUrl, Duration timeout) {

please add a OKHttpClient on your builder as optional so I am able to do an inject like so:

OkHttpClient client = new OkHttpClient.Builder().addInterceptor(new Interceptor() {
      @Override
      public Response intercept(Chain chain) throws IOException {
        Request newRequest  = chain.request().newBuilder()
            .addHeader("Authorization", "Bearer " + token)
            .build();
        return chain.proceed(newRequest);
      }
    }).build();

OllamaChatModel.builder()
    .client(client)
    ....

Thanks a lot!

[mnnayeck]

total blocker :(