0.15.6 (#781)

* Resetting instructions on Langchain::Assistant with Google VertexAI no longer throws an error.

* 0.15.6

* fix specs

CHANGELOG.md

@@ -1,6 +1,11 @@
 ## [Unreleased]
 
-## [0.15.4] - 2024-09-10 🇧🇦
+## [0.15.6] - 2024-09-16
+- Throw an error when `Langchain::Assistant#add_message_callback` is not a callable proc.
+- Resetting instructions on Langchain::Assistant with Google Gemini no longer throws an error.
+- Add Meta models support for AWS Bedrock LLM
+
+## [0.15.5] - 2024-09-10 🇧🇦
 - Fix for Langchain::Prompt::PromptTemplate supporting nested JSON data
 - Require common libs at top-level
 - Add `add_message_callback` to `Langchain::Assistant` constructor to invoke an optional function when any message is added to the conversation

Gemfile.lock

@@ -1,7 +1,7 @@
 PATH
   remote: .
   specs:
-    langchainrb (0.15.5)
+    langchainrb (0.15.6)
       baran (~> 0.1.9)
       json-schema (~> 4)
       matrix

lib/langchain/assistants/assistant.rb

@@ -170,7 +170,9 @@ def instructions=(new_instructions)
       @instructions = new_instructions
 
       # This only needs to be done that support Message#@role="system"
-      if !llm.is_a?(Langchain::LLM::GoogleGemini) && !llm.is_a?(Langchain::LLM::Anthropic)
+      if !llm.is_a?(Langchain::LLM::GoogleGemini) &&
+          !llm.is_a?(Langchain::LLM::GoogleVertexAI) &&
+          !llm.is_a?(Langchain::LLM::Anthropic)
         # Find message with role: "system" in thread.messages and delete it from the thread.messages array
         replace_system_message!(content: new_instructions)
       end

lib/langchain/llm/google_vertex_ai.rb

@@ -88,8 +88,6 @@ def embed(
     def chat(params = {})
       params[:system] = {parts: [{text: params[:system]}]} if params[:system]
       params[:tools] = {function_declarations: params[:tools]} if params[:tools]
-      # This throws an error when tool_choice is passed
-      # params[:tool_choice] = {function_calling_config: {mode: params[:tool_choice].upcase}} if params[:tool_choice]
 
       raise ArgumentError.new("messages argument is required") if Array(params[:messages]).empty?
 

lib/langchain/version.rb

@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module Langchain
-  VERSION = "0.15.5"
+  VERSION = "0.15.6"
 end

spec/langchain/assistants/assistant_spec.rb

@@ -1,5 +1,7 @@
 # frozen_string_literal: true
 
+require "googleauth"
+
 RSpec.describe Langchain::Assistant do
   context "initialization" do
     let(:llm) { Langchain::LLM::OpenAI.new(api_key: "123") }
@@ -756,6 +758,32 @@
     end
   end
 
+  context "when llm is GoogleVertexAI" do
+    let(:llm) { Langchain::LLM::GoogleVertexAI.new(project_id: "123", region: "us-central1") }
+    let(:calculator) { Langchain::Tool::Calculator.new }
+    let(:instructions) { "You are an expert assistant" }
+
+    before do
+      allow(::Google::Auth).to receive(:get_application_default).and_return({})
+    end
+
+    subject {
+      described_class.new(
+        llm: llm,
+        tools: [calculator],
+        instructions: instructions
+      )
+    }
+
+    describe "#instructions=" do
+      it "resets instructions" do
+        subject.instructions = "New instructions"
+        expect(subject).not_to receive(:replace_system_message!)
+        expect(subject.instructions).to eq("New instructions")
+      end
+    end
+  end
+
   context "when llm is GoogleGemini" do
     let(:llm) { Langchain::LLM::GoogleGemini.new(api_key: "123") }
     let(:calculator) { Langchain::Tool::Calculator.new }