Feature/defect fixes (#345)

* feat(bugfix): fixed version error

* feat(construct): updated image generation resource policy and graphql api type

* chore: self mutation

Signed-off-by: github-actions <[email protected]>

* feat(operationalmetric): updated description format

* Update apidocs/classes/ContentGenerationAppSyncLambda.md

Co-authored-by: Scott Schreckengaust <[email protected]>
Signed-off-by: Dinesh Sajwan <[email protected]>

* Update src/patterns/gen-ai/aws-contentgen-appsync-lambda/index.ts

Co-authored-by: Scott Schreckengaust <[email protected]>
Signed-off-by: Dinesh Sajwan <[email protected]>

* Update src/patterns/gen-ai/aws-contentgen-appsync-lambda/index.ts

Co-authored-by: Scott Schreckengaust <[email protected]>
Signed-off-by: Dinesh Sajwan <[email protected]>

* feat(construct): added streaming support for image

---------

Signed-off-by: github-actions <[email protected]>
Signed-off-by: Dinesh Sajwan <[email protected]>
Co-authored-by: Dinesh Sajwan <[email protected]>
Co-authored-by: github-actions <[email protected]>
Co-authored-by: Scott Schreckengaust <[email protected]>

Author: 4 people

lambda/aws-qa-appsync-opensearch/question_answering/src/qa_agent/helper.py

@@ -180,7 +180,7 @@ def send_job_status(variables):
         auth=aws_auth_appsync,
         timeout=10
     )
-    logger.info('res :: {}',responseJobstatus)
+    #logger.info('res :: {}',responseJobstatus)
 
 def get_presigned_url(bucket,key) -> str:
         try:

lambda/aws-qa-appsync-opensearch/question_answering/src/qa_agent/image_qa.py

@@ -24,7 +24,6 @@
 from langchain.chains import LLMChain
 from .sagemaker_endpoint import MultiModal
 from aws_lambda_powertools import Logger, Tracer, Metrics
-from .StreamingCallbackHandler import StreamingCallbackHandler
 from adapters import registry
 
 from .helper import  download_file, load_vector_db_opensearch,send_job_status, JobStatus,get_presigned_url,encode_image_to_base64
@@ -181,7 +180,7 @@ def process_visual_qa(input_params,status_variables,filename):
 
     qa_model= input_params['qa_model']
     qa_modelId=qa_model['modelId']
-    
+    streaming = qa_model.get("streaming", False)
     # default model provider is bedrock and defalut modality is tEXT
     modality=qa_model.get("modality", "Text")
     model_provider=qa_model.get("provider",Provider.BEDROCK)
@@ -207,28 +206,20 @@ def process_visual_qa(input_params,status_variables,filename):
         if(_qa_llm is not None):
             local_file_path= download_file(bucket_name,filename)
             base64_images=encode_image_to_base64(local_file_path,filename) 
-            status_variables['answer']= generate_vision_answer_bedrock(_qa_llm,base64_images, qa_modelId,decoded_question)
-            if(status_variables['answer'] is None):
-                status_variables['answer'] = JobStatus.ERROR_PREDICTION.status
-                error = JobStatus.ERROR_PREDICTION.get_message()
-                status_variables['answer'] = error.decode("utf-8")
-                status_variables['jobstatus'] = JobStatus.ERROR_PREDICTION.status
-            else:    
-                status_variables['jobstatus'] = JobStatus.DONE.status
-                streaming = input_params.get("streaming", False)
-
+            generate_vision_answer_bedrock(_qa_llm,base64_images, qa_modelId,decoded_question,status_variables,streaming)
         else:
             logger.error('Invalid Model , cannot load  LLM , returning..')
             status_variables['jobstatus'] = JobStatus.ERROR_LOAD_LLM.status
             error = JobStatus.ERROR_LOAD_LLM.get_message()
             status_variables['answer'] = error.decode("utf-8")
+            send_job_status(status_variables)
     else:
         logger.error('Invalid Model provider, cannot load  LLM , returning..')
         status_variables['jobstatus'] = JobStatus.ERROR_LOAD_LLM.status
         error = JobStatus.ERROR_LOAD_LLM.get_message()
         status_variables['answer'] = error.decode("utf-8")
+        send_job_status(status_variables)
 
-    send_job_status(status_variables)
     return status_variables
 
 def generate_vision_answer_sagemaker(_qa_llm,input_params,decoded_question,status_variables,filename):
@@ -269,18 +260,9 @@ def generate_vision_answer_sagemaker(_qa_llm,input_params,decoded_question,statu
 
     return status_variables
 
-def generate_vision_answer_bedrock(bedrock_client,base64_images,model_id,decoded_question):
-    system_prompt=""
-    # use system prompt for fine tuning the performamce
-    # system_prompt= """
-    # You have perfect vision and pay great attention to detail which
-    # makes you an expert at answering architecture diagram question. 
-    # Answer question in <question></question> tags. Before answer, 
-    # think step by step in <thinking> tags and analyze every part of the diagram.
-    # """
-    #Create a prompt with the question
-    prompt =f"<question>{decoded_question}</question>. Answer must be a numbered list in a small paragraph inside <answer></answer> tag."
-
+def generate_vision_answer_bedrock(bedrock_client,base64_images,model_id,
+                                   decoded_question,status_variables,streaming):
+    
     claude_config = {
         'max_tokens': 1000, 
         'temperature': 0, 
@@ -302,34 +284,57 @@ def generate_vision_answer_bedrock(bedrock_client,base64_images,model_id,decoded
             },
             {
                 "type": "text",
-                "text": prompt
+                "text": decoded_question
 
             }
         ]
     }
 
-    body=json.dumps({'messages': [messages],**claude_config, "system": system_prompt})
+    body=json.dumps({'messages': [messages],**claude_config})
+
     try:
-        response = bedrock_client.invoke_model(
-        body=body, modelId=model_id, accept="application/json",
-                        contentType="application/json"
-                    )  
+        if streaming:
+            response = bedrock_client.invoke_model_with_response_stream(
+                    body=body, modelId=model_id, accept="application/json",
+                            contentType="application/json"
+                        )  
+            for event in response.get("body"):
+                chunk = json.loads(event["chunk"]["bytes"])
+
+                if chunk['type'] == 'message_delta':
+                    status_variables['answer']=''
+                    status_variables['jobstatus'] = JobStatus.STREAMING_ENDED.status
+                    send_job_status(status_variables)
+
+                if chunk['type'] == 'content_block_delta':
+                    if chunk['delta']['type'] == 'text_delta':
+                        logger.info(chunk['delta']['text'], end="")
+                        chuncked_text=chunk['delta']['text']
+                        llm_answer_bytes = json.dumps(chuncked_text).encode("utf-8")
+                        base64_bytes = base64.b64encode(llm_answer_bytes)
+                        llm_answer_base64_string = base64_bytes.decode("utf-8")
+                        status_variables['answer']=llm_answer_base64_string
+                        status_variables['jobstatus'] = JobStatus.STREAMING_NEW_TOKEN.status
+                        send_job_status(status_variables)       
+
+            
+        else:
+            response = bedrock_client.invoke_model(
+                body=body, modelId=model_id, accept="application/json",
+                            contentType="application/json"
+                        ) 
+            response_body = json.loads(response.get('body').read())
+            logger.info(f'answer is: {response_body}')
+            output_list = response_body.get("content", [])
+            for output in output_list:
+                llm_answer_bytes = json.dumps(output["text"]).encode("utf-8")
+                base64_bytes = base64.b64encode(llm_answer_bytes)
+                llm_answer_base64_string = base64_bytes.decode("utf-8")
+                status_variables['jobstatus'] = JobStatus.DONE.status               
+                status_variables['answer']=llm_answer_base64_string
+            send_job_status(status_variables) 
+            
     except Exception as err:
         logger.exception(f'Error occurred , Reason :{err}')
         return None
-    
-    response = json.loads(response['body'].read().decode('utf-8'))
-
-    formated_response= response['content'][0]['text']
-    answer = re.findall(r'<answer>(.*?)</answer>', formated_response, re.DOTALL)
-    formatted_answer=answer[0]
-    llm_answer_bytes = formatted_answer.encode("utf-8")
-    print(f' formatted_answer {formatted_answer}')
-    base64_bytes = base64.b64encode(llm_answer_bytes)
-    print(f' base64_bytes')
-    llm_answer_base64_string = base64_bytes.decode("utf-8")
-
-    print(f' llm_answer_base64_string {llm_answer_base64_string}')
-
-    return llm_answer_base64_string
-
+