import

app.py

@@ -0,0 +1,172 @@
+import gradio as gr
+import json
+import os
+import boto3
+
+dump_controls = False
+log_to_console = False
+
+
+def add_text(history, text):
+    history = history + [(text, None)]
+    return history, gr.Textbox(value="", interactive=False)
+
+
+def add_file(history, file):
+    with open(file.name, mode="rb") as f:
+        content = f.read()
+
+        if isinstance(content, bytes):
+            content = content.decode('utf-8', 'replace')
+        else:
+            content = str(content)
+
+    fn = os.path.basename(file.name)
+    history = history + [(f'```{fn}\n{content}\n```', None)]
+
+    gr.Info(f"File added as {fn}")
+
+    return history
+
+def submit_text(txt_value):
+    return add_text([chatbot, txt_value], [chatbot, txt_value])
+
+def undo(history):
+    history.pop()
+    return history
+
+def dump(history):
+    return str(history)
+
+def load_settings():  
+    # Dummy Python function, actual loading is done in JS  
+    pass  
+
+def save_settings(acc, sec, prompt, temp):  
+    # Dummy Python function, actual saving is done in JS  
+    pass  
+
+def process_values_js():
+    return """
+    () => {
+        return ["access_key", "secret_key", "token"];
+    }
+    """
+
+def bot(message, history, aws_access, aws_secret, aws_token):
+    try:
+        prompt = "\n\n"
+        for human, assi in history:
+            if prompt is not None:
+                prompt += f"Human: {human}\n\n"
+            if assi is not None:
+                prompt += f"Assistant: {assi}\n\n"
+        if message:
+            prompt += f"Human: {message}\n\n"
+        prompt += f"Assistant:"
+
+        if log_to_console:
+            print(f"br_prompt: {str(prompt)}")
+
+        body = json.dumps({
+            "prompt": prompt,
+            "max_tokens_to_sample": 300,
+            "temperature": 0,
+        })
+
+        sess = boto3.Session(
+            aws_access_key_id=aws_access,
+            aws_secret_access_key=aws_secret,
+            aws_session_token=aws_token,
+            region_name='eu-central-1')
+        br = sess.client(service_name="bedrock-runtime")
+
+        response = br.invoke_model(body=body, modelId="anthropic.claude-v2",
+                                accept="application/json", contentType="application/json")
+        response_body = json.loads(response.get('body').read())
+        br_result = response_body.get('completion')
+
+        history[-1][1] = br_result
+        if log_to_console:
+            print(f"br_result: {str(history)}")
+
+    except Exception as e:
+        raise gr.Error(f"Error: {str(e)}")
+
+    return "", history
+
+with gr.Blocks() as demo:
+    gr.Markdown("# Amazon™️ Bedrock™️ Chat™️ (Nils' Version™️) feat. Anthropic™️ Claude-2™️")
+
+    with gr.Accordion("Settings"):
+        aws_access = gr.Textbox(label="AWS Access Key", elem_id="aws_access")
+        aws_secret = gr.Textbox(label="AWS Secret Key", elem_id="aws_secret")
+        aws_token = gr.Textbox(label="AWS Session Token", elem_id="aws_token")
+        system_prompt = gr.TextArea("You are a helpful AI.", label="System Prompt", lines=3, max_lines=250, elem_id="system_prompt")  
+        temp = gr.Slider(0, 1, label="Temperature", elem_id="temp")
+        save_button = gr.Button("Save Settings")  
+        load_button = gr.Button("Load Settings")  
+
+        load_button.click(load_settings, js="""  
+            () => {  
+                let elems = ['#aws_access textarea', '#aws_secret textarea', '#aws_token textarea', '#system_prompt textarea', '#temp input'];
+                elems.forEach(elem => {
+                    let item = document.querySelector(elem);
+                    let event = new InputEvent('input', { bubbles: true });
+                    item.value = localStorage.getItem(elem.split(" ")[0].slice(1)) || '';
+                    item.dispatchEvent(event);
+                });
+            }  
+        """)
+
+        save_button.click(save_settings, [aws_access, aws_secret, aws_token, system_prompt, temp], js="""  
+            (acc, sec, tok, prompt, temp) => {  
+                localStorage.setItem('aws_access', acc);  
+                localStorage.setItem('aws_secret', sec);  
+                localStorage.setItem('aws_token', tok);  
+                localStorage.setItem('system_prompt', prompt);  
+                localStorage.setItem('temp', temp);  
+            }  
+        """) 
+
+    chatbot = gr.Chatbot(
+        [],
+        elem_id="chatbot",
+        show_copy_button=True,
+        height=350
+    )
+
+    with gr.Row():
+        txt = gr.TextArea(
+            scale=4,
+            show_label=False,
+            placeholder="Enter text and press enter, or upload a file",
+            container=False,
+            lines=3,            
+        )
+        submit_btn = gr.Button("🚀 Send", scale=0)
+        submit_click = submit_btn.click(add_text, [chatbot, txt], [chatbot, txt], queue=False).then(
+            bot, [txt, chatbot, aws_access, aws_secret, aws_token], [txt, chatbot],
+        )
+        submit_click.then(lambda: gr.Textbox(interactive=True), None, [txt], queue=False)
+
+    with gr.Row():
+        btn = gr.UploadButton("📁 Upload", size="sm")
+        undo_btn = gr.Button("↩️ Undo")
+        undo_btn.click(undo, inputs=[chatbot], outputs=[chatbot])
+
+        clear = gr.ClearButton(chatbot, value="🗑️ Clear")
+
+    if dump_controls:
+        with gr.Row():
+            dmp_btn = gr.Button("Dump")
+            txt_dmp = gr.Textbox("Dump")
+            dmp_btn.click(dump, inputs=[chatbot], outputs=[txt_dmp])
+
+    txt_msg = txt.submit(add_text, [chatbot, txt], [chatbot, txt], queue=False).then(
+        bot, [txt, chatbot, aws_access, aws_secret, aws_token], [txt, chatbot],
+    )
+    txt_msg.then(lambda: gr.Textbox(interactive=True), None, [txt], queue=False)
+    file_msg = btn.upload(add_file, [chatbot, btn], [chatbot], queue=False, postprocess=False)
+
+demo.queue().launch()

requirements.txt

@@ -0,0 +1,3 @@
+gradio
+langchain
+boto3