-

.gitignore

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+__pycache__

Dockerfile

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+FROM python:3.11-slim
+
+RUN pip install poetry==1.6.1
+
+RUN poetry config virtualenvs.create false
+
+WORKDIR /code
+
+COPY ./pyproject.toml ./README.md ./poetry.lock* ./
+
+COPY ./package[s] ./packages
+
+RUN poetry install  --no-interaction --no-ansi --no-root
+
+COPY ./app ./app
+
+RUN poetry install --no-interaction --no-ansi
+
+EXPOSE 8080
+
+RUN --mount=type=secret,id=TOGETHER_API_KEY,mode=0444,required=true 
+
+CMD ["uvicorn", "app.server:app", "--host", "0.0.0.0", "--port", "7860"]

README copy.md

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+# my-app
+
+## Installation
+
+Install the LangChain CLI if you haven't yet
+
+```bash
+pip install -U langchain-cli
+```
+
+## Adding packages
+
+```bash
+# adding packages from 
+# https://github.com/langchain-ai/langchain/tree/master/templates
+langchain app add $PROJECT_NAME
+
+# adding custom GitHub repo packages
+langchain app add --repo $OWNER/$REPO
+# or with whole git string (supports other git providers):
+# langchain app add git+https://github.com/hwchase17/chain-of-verification
+
+# with a custom api mount point (defaults to `/{package_name}`)
+langchain app add $PROJECT_NAME --api_path=/my/custom/path/rag
+```
+
+Note: you remove packages by their api path
+
+```bash
+langchain app remove my/custom/path/rag
+```
+
+## Setup LangSmith (Optional)
+LangSmith will help us trace, monitor and debug LangChain applications. 
+You can sign up for LangSmith [here](https://smith.langchain.com/). 
+If you don't have access, you can skip this section
+
+
+```shell
+export LANGCHAIN_TRACING_V2=true
+export LANGCHAIN_API_KEY=<your-api-key>
+export LANGCHAIN_PROJECT=<your-project>  # if not specified, defaults to "default"
+```
+
+## Launch LangServe
+
+```bash
+langchain serve
+```
+
+## Running in Docker
+
+This project folder includes a Dockerfile that allows you to easily build and host your LangServe app.
+
+### Building the Image
+
+To build the image, you simply:
+
+```shell
+docker build . -t my-langserve-app
+```
+
+If you tag your image with something other than `my-langserve-app`,
+note it for use in the next step.
+
+### Running the Image Locally
+
+To run the image, you'll need to include any environment variables
+necessary for your application.
+
+In the below example, we inject the `OPENAI_API_KEY` environment
+variable with the value set in my local environment
+(`$OPENAI_API_KEY`)
+
+We also expose port 8080 with the `-p 8080:8080` option.
+
+```shell
+docker run -e OPENAI_API_KEY=$OPENAI_API_KEY -p 8080:8080 my-langserve-app
+```

app/server.py

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+from fastapi import FastAPI
+from fastapi.responses import RedirectResponse
+from langserve import add_routes
+
+from pirate_speak.chain import chain as pirate_speak_chain
+
+
+
+app = FastAPI()
+
+
+@app.get("/")
+async def redirect_root_to_docs():
+    return RedirectResponse("/docs")
+
+
+# Edit this to add the chain you want to add
+add_routes(app, pirate_speak_chain, 
+           path="/pirate-speak",
+            playground_type='chat')
+
+if __name__ == "__main__":
+    import uvicorn
+
+    uvicorn.run(app, host="0.0.0.0", port=8000)

packages/pirate-speak/LICENSE

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+MIT License
+
+Copyright (c) 2023 LangChain, Inc.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

packages/pirate-speak/README.md

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+
+# pirate-speak
+
+This template converts user input into pirate speak.
+
+## Environment Setup
+
+Set the `OPENAI_API_KEY` environment variable to access the OpenAI models.
+
+## Usage
+
+To use this package, you should first have the LangChain CLI installed:
+
+```shell
+pip install -U langchain-cli
+```
+
+To create a new LangChain project and install this as the only package, you can do:
+
+```shell
+langchain app new my-app --package pirate-speak
+```
+
+If you want to add this to an existing project, you can just run:
+
+```shell
+langchain app add pirate-speak
+```
+
+And add the following code to your `server.py` file:
+```python
+from pirate_speak.chain import chain as pirate_speak_chain
+
+add_routes(app, pirate_speak_chain, path="/pirate-speak")
+```
+
+(Optional) Let's now configure LangSmith. 
+LangSmith will help us trace, monitor and debug LangChain applications. 
+You can sign up for LangSmith [here](https://smith.langchain.com/). 
+If you don't have access, you can skip this section
+
+
+```shell
+export LANGCHAIN_TRACING_V2=true
+export LANGCHAIN_API_KEY=<your-api-key>
+export LANGCHAIN_PROJECT=<your-project>  # if not specified, defaults to "default"
+```
+
+If you are inside this directory, then you can spin up a LangServe instance directly by:
+
+```shell
+langchain serve
+```
+
+This will start the FastAPI app with a server is running locally at 
+[http://localhost:8000](http://localhost:8000)
+
+We can see all templates at [http://127.0.0.1:8000/docs](http://127.0.0.1:8000/docs)
+We can access the playground at [http://127.0.0.1:8000/pirate-speak/playground](http://127.0.0.1:8000/pirate-speak/playground)  
+
+We can access the template from code with:
+
+```python
+from langserve.client import RemoteRunnable
+
+runnable = RemoteRunnable("http://localhost:8000/pirate-speak")
+```

packages/pirate-speak/pirate_speak/chain.py

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+from langchain_together import Together
+from langchain_core.prompts import ChatPromptTemplate, MessagesPlaceholder
+
+import os
+from dotenv import load_dotenv
+load_dotenv()
+
+together_api_key = os.getenv("TOGETHER_API_KEY")
+
+_prompt = ChatPromptTemplate.from_messages(
+    [
+        (
+            "system",
+            "You are an expert doctor. You believe that all diseases are formed by the consumption of cheese. No matter which disease or symptoms your patient presents with, you will believe that cheese is the cause of the disease. However, your treatment should all involve cheese. Cheese is both the cause of and solution to all problems. You should then lament that the medicine, cheese, will also cause more disease.",
+        ),
+        MessagesPlaceholder("chat_history"),
+        
+        ("human", "{text}"),
+    ]
+)
+_model  = Together(
+    #model="mistralai/Mistral-7B-Instruct-v0.2",
+    model="meta-llama/Llama-3-8b-chat-hf",
+    temperature=0.3,
+    top_k=50,
+    top_p=0.7,
+    repetition_penalty=1,
+    together_api_key=together_api_key
+)
+
+
+# if you update this, you MUST also update ../pyproject.toml
+# with the new `tool.langserve.export_attr`
+chain = _prompt | _model

packages/pirate-speak/pyproject.toml

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+[tool.poetry]
+name = "pirate-speak"
+version = "0.0.1"
+description = "Get started with a simple template that speaks like a pirate"
+authors = []
+readme = "README.md"
+
+[tool.poetry.dependencies]
+python = ">=3.8.1,<4.0"
+openai = "<2"
+langchain-community = ">=0.0.7,<0.2"
+langchain-core = ">=0.1.4,<0.2"
+
+[tool.poetry.group.dev.dependencies]
+langchain-cli = ">=0.0.21"
+fastapi = ">=0.104.0,<1"
+sse-starlette = "^1.6.5"
+
+[tool.langserve]
+export_module = "pirate_speak.chain"
+export_attr = "chain"
+
+[tool.templates-hub]
+use-case = "chatbot"
+author = "LangChain"
+integrations = ["OpenAI"]
+tags = ["getting-started"]
+
+[build-system]
+requires = ["poetry-core"]
+build-backend = "poetry.core.masonry.api"

pyproject.toml

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+[tool.poetry]
+name = "my-app"
+version = "0.1.0"
+description = ""
+authors = ["Your Name <you@example.com>"]
+readme = "README.md"
+packages = [
+    { include = "app" },
+]
+
+[tool.poetry.dependencies]
+python = "^3.11"
+uvicorn = "^0.23.2"
+langserve = {extras = ["server"], version = ">=0.0.30"}
+pydantic = "<2"
+pirate-speak = {path = "packages/pirate-speak", develop = true}
+python-dotenv = "1"
+langchain-together = "0.0.2.post1"
+
+
+[tool.poetry.group.dev.dependencies]
+langchain-cli = ">=0.0.15"
+
+[build-system]
+requires = ["poetry-core"]
+build-backend = "poetry.core.masonry.api"