add rag solution nb

Makefile

@@ -19,7 +19,8 @@ kernels: \
  tf_recommenders_kernel \
  object_detection_kernel \
  pytorch_kfp_kernel \
- gemini_kernel
+ langchain_kernel \
+ gemini_kernel 
 
 .PHONY: clean
 clean:
@@ -42,6 +43,10 @@ install:
 precommit:
 	@pre-commit run --all-files
 
+.PHONY: langchain_kernel
+langchain_kernel:
+	./kernels/langchain.sh
+
 .PHONY: reinforcement_learning_kernel
 reinforcement_learning_kernel:
 	./kernels/reinforcement_learning.sh

kernels/langchain.sh

@@ -0,0 +1,33 @@
+#!/bin/bash
+#
+# To build the kernel:  ./kernels/object_detection.sh
+# To remove the kernel: ./kernels/object_detection.sh remove
+#
+# This scripts will create a ipython kernel named $ENVNAME
+
+MODULE=vertex_genai
+ENVNAME=langchain_kernel
+REPO_ROOT_DIR="$(dirname $(cd $(dirname $BASH_SOURCE) && pwd))"
+
+# Cleaning up the kernel and exiting if first arg is 'remove'
+if [ "$1" == "remove" ]; then
+  echo Removing kernel $ENVNAME
+  jupyter kernelspec remove $ENVNAME
+  rm -r "$REPO_ROOT_DIR/notebooks/$MODULE/$ENVNAME"
+  exit 0
+fi
+
+cd $REPO_ROOT_DIR/notebooks/$MODULE
+
+# Setup virtual env and kernel
+python3 -m venv $ENVNAME --system-site-packages
+source $ENVNAME/bin/activate
+python -m ipykernel install --user --name=$ENVNAME
+
+pip install -q -U pip
+pip install langchain==0.0.217
+pip install wikipedia==1.4.0
+pip install chromadb==0.3.26
+pip install google-cloud-aiplatform==1.26.1
+
+deactivate