Ollama add OkhttpClient inject

[Martin7-1]

Context

see #586

Change

Add OkhttpClient injection in Ollama models

Checklist

Before submitting this PR, please check the following points:

• I have added unit and integration tests for my change
• All unit and integration tests in the module I have added/changed are green
• All unit and integration tests in the core and main modules are green
• I have added/updated the documentation
• I have added an example in the examples repo (only for "big" features)
• I have added my new module in the BOM (only when a new module is added)

Checklist for adding new embedding store integration

• I have added a {NameOfIntegration}EmbeddingStoreIT that extends from either EmbeddingStoreIT or EmbeddingStoreWithFilteringIT

[langchain4j]

Hi @Martin7-1 thanks a lot!

Please avoid adding OkHttpClient to Ollama*Model API as we plan to move away from okhttp pretty soon.

Instead, I would propose to allow the user to do the following (we already have this in OpenAiChatModel):

OllamaChatModel.builder()
                ...
                .defaultHeaders(Map.of("Authorization", "Bearer ..."))
                .build();

WDYT?

[Martin7-1]

Hi @Martin7-1 thanks a lot!

Please avoid adding OkHttpClient to Ollama*Model API as we plan to move away from okhttp pretty soon.

Instead, I would propose to allow the user to do the following (we already have this in OpenAiChatModel):

OllamaChatModel.builder()
                ...
                .defaultHeaders(Map.of("Authorization", "Bearer ..."))
                .build();

WDYT?

@langchain4j I think it's a good idea! Will change soon.

[Martin7-1]

@langchain4j Hi! I've change it without OkhttpClient in constructor. Please have a look. BTW, there seems no official docker image with Auth, but I found some community docker image which implement it with Caddy, such as ollama-auth and ollama_proxy_server. Maybe we need to choose community docker image to test custom headers. But it seems not a good way due to consistency...WDYT? Do you have any idea to test it with official docker image?

[langchain4j]

@Martin7-1 thank you!

[langchain4j]

@Martin7-1 regarding testing, we can do manual testing here if there is no easy way to automate it.

[Martin7-1]

@Martin7-1 regarding testing, we can do manual testing here if there is no easy way to automate it.

Ok. I will add some tests.

[langchain4j]

@Martin7-1 thank you a lot!

[langchain4j]

@Martin7-1 Could you please add this new parameter to https://github.com/langchain4j/langchain4j-spring/blob/main/langchain4j-ollama-spring-boot-starter/src/main/java/dev/langchain4j/ollama/spring/AutoConfig.java?

[Martin7-1]

@Martin7-1 Could you please add this new parameter to https://github.com/langchain4j/langchain4j-spring/blob/main/langchain4j-ollama-spring-boot-starter/src/main/java/dev/langchain4j/ollama/spring/AutoConfig.java?

@langchain4j ok. I've done it in langchain4j-spring#21.