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import gradio as gr
import random
import requests
import os
from datetime import datetime
import hashlib
import hmac
import json
def sign(key, msg):
return hmac.new(key, msg.encode('utf-8'), hashlib.sha256).digest()
def get_signature_key(secret_key, date_stamp, region_name, service_name):
k_date = sign(('AWS4' + secret_key).encode('utf-8'), date_stamp)
k_region = sign(k_date, region_name)
k_service = sign(k_region, service_name)
k_signing = sign(k_service, 'aws4_request')
return k_signing
def generate_response(input, history):
#bot_message = random.choice(["How are you?", "I love you", "I'm very hungry"])
#Authentication AWS
access_key = os.environ['AccessKey']
secret_key = os.environ['SecretKey']
region = 'eu-west-1' # e.g., 'us-west-2'
service = 'sagemaker'
#Hit the Sagemaker API and get results
url = "https://runtime.sagemaker.eu-west-1.amazonaws.com/endpoints/jumpstart-dft-meta-textgeneration-llama-2-7b-f/invocations"
#authorization_token = os.environ['Authorization']
# headers = {
# "Content-Type": "application/json",
# "X-Amz-Date": datetime.utcnow().strftime("%Y%m%dT%H%M%SZ"), # Using ISO-8601 basic format
# "X-Amzn-SageMaker-Custom-Attributes": "accept_eula=true",
# "Connection": "keep-alive"
# }
payload = {
"inputs": [
[
{
"role": "system",
"content": "Always answer positively"
},
{
"role": "user",
"content": input #"I am going to Paris, what should I see?"
}
]
],
"parameters": {
"max_new_tokens": 512,
"top_p": 0.9,
"temperature": 0.6
}
}
payload_str = json.dumps(payload)
t = datetime.utcnow()
amz_date = t.strftime('%Y%m%dT%H%M%SZ')
date_stamp = t.strftime('%Y%m%d')
endpoint = "runtime.sagemaker.eu-west-1.amazonaws.com"
canonical_uri = '/endpoints/jumpstart-dft-meta-textgeneration-llama-2-7b-f/invocations' # Your canonical URI here
canonical_headers = f'host:{endpoint}\nx-amz-date:{amz_date}\n'
signed_headers = 'host;x-amz-date'
hashlib_payload = hashlib.sha256(payload_str.encode('utf-8')).hexdigest()
canonical_request = f'POST\n{canonical_uri}\n\n{canonical_headers}\n{signed_headers}\n{hashlib_payload}'
algorithm = 'AWS4-HMAC-SHA256'
credential_scope = f'{date_stamp}/{region}/{service}/aws4_request'
string_to_sign = f'{algorithm}\n{amz_date}\n{credential_scope}\n{hashlib.sha256(canonical_request.encode("utf-8")).hexdigest()}'
signing_key = get_signature_key(secret_key, date_stamp, region, service)
signature = hmac.new(signing_key, (string_to_sign).encode('utf-8'), hashlib.sha256).hexdigest()
authorization_header = f'{algorithm} Credential={access_key}/{credential_scope}, SignedHeaders={signed_headers}, Signature={signature}'
headers = {
'x-amz-date': amz_date,
'Authorization': authorization_header,
'Content-Type': 'application/json',
"X-Amzn-SageMaker-Custom-Attributes": "accept_eula=true"
}
#response = requests.post(endpoint, headers=headers, data=payload_str)
response = requests.post(url, json=payload, headers=headers)
if response.status_code == 200:
response_json = response.json()
if response_json and 'generation' in response_json[0]:
content = response_json[0]['generation']['content']
print("Content:", content)
bot_message = content
else:
print("Content not found in response")
else:
print("Request failed:", response.status_code, response.text)
return bot_message
def my_chatbot(input, history):
history = history or []
my_history = list(sum(history, ()))
my_history.append(input)
my_input = ' '.join(my_history)
output = generate_response(input, history)
history.append((input, output))
return history, history
with gr.Blocks() as demo:
gr.Markdown("""<h1><center>My Chatbot</center></h1>""")
chatbot = gr.Chatbot()
state = gr.State()
text = gr.Textbox(placeholder="Hello. Ask me a question.")
submit = gr.Button("SEND")
submit.click(my_chatbot, inputs=[text, state], outputs=[chatbot, state])
demo.launch(debug=True) |