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Fix web-app bugs #235

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merged 1 commit into from
Oct 7, 2024
+23 −24
Merged

Fix web-app bugs #235

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47 changes: 23 additions & 24 deletions cdk/examples/generative_ai_rag/web-app/pages/rag_integration.py
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Original file line number Diff line number Diff line change
Expand Up @@ -14,17 +14,17 @@ def get_parameter(name):
except:
return

st.title("💬 Chat")
st.title("💬 Amazon Bedrock Chat with Knowledge Base")

if "rag_messages" not in st.session_state:
st.session_state["rag_messages"] = [{"role": "assistant", "content": "Ask me something about reinvent 2024?"}]
if "messages" not in st.session_state:
st.session_state["messages"] = [{"role": "assistant", "content": "Hello, Builders! Ask me any questions you have about AWS re:Invent sessions."}]

for msg in st.session_state.rag_messages:
for msg in st.session_state.messages:
st.chat_message(msg["role"]).write(msg["content"])

if prompt := st.chat_input():
st.chat_message("user").write(prompt)
st.session_state.rag_messages.append(
st.session_state.messages.append(
{
"role": "user",
"content": prompt
Expand All @@ -37,7 +37,7 @@ def get_parameter(name):
if not agent_alias_id and agent_id:
st.info("Something is not wrong with parameter store")
st.stop()
client = boto3.client('bedrock-agent-runtime', region_name='us-east-1')
client = boto3.client('bedrock-agent-runtime')
agent_response = client.invoke_agent(
inputText=prompt,
agentId=agent_id,
Expand All @@ -46,22 +46,21 @@ def get_parameter(name):
)
try:
for event in agent_response['completion']:
chunks = event.get('chunk').get('attribution').get('citations')
for chunk in chunks:
msg = chunk['generatedResponsePart']['textResponsePart']['text']
st.session_state.rag_messages.append(
{
"role": "assistant",
"content": msg
}
)
st.chat_message("assistant").write(msg)
except:
msg = "Please give me a better prompt"
st.session_state.rag_messages.append(
{
"role": "assistant",
"content": msg
}
)
if 'chunk' in event:
chunk = event['chunk']
if 'bytes' in chunk:
msg = chunk['bytes'].decode('utf-8')
st.session_state.messages.append(
{
"role": "assistant",
"content": msg
}
)
st.chat_message("assistant").write(msg)
except Exception as e:
print(f"Error: {e}")
st.error("An error occurred while processing the agent's response. Please check the logs for details.")

msg = "I encountered an issue while processing the response. Could you please rephrase your prompt or try a different question?"
st.session_state.messages.append({"role": "assistant", "content": msg})
st.chat_message("assistant").write(msg)
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