Merge branch 'langchain-template'

Author: LeooR22

.gitignore

@@ -136,4 +136,6 @@ sonarqube/logs
 
 backend
 
-.terraform
+.terraform
+
+my_app

create_fastapi_project/helpers/install.py

@@ -69,7 +69,8 @@ def install_dependencies(root: str, dependencies: list[str], dev: bool = False):
     if process.returncode != 0:
         raise Exception(f"Error installing dependencies: {stderr.decode('utf-8')}")
 
-    print(stdout.decode("utf-8"))
+    decoded_stdout = stdout.decode("utf-8", errors="replace")
+    print(decoded_stdout)
 
 
 def add_configuration_to_pyproject(
@@ -87,7 +88,7 @@ def add_configuration_to_pyproject(
                 "readme": "README.md",
                 "packages": [{"include": "app"}],
                 "dependencies": {
-                    "python": ">3.9,<3.12"
+                    "python": ">=3.10,<3.12"
                 }
             },
             "black": {

create_fastapi_project/main.py

@@ -36,10 +36,17 @@ def create_project():
         validate=ProjectNameValidator,
         default="backend",
     ).ask()
+    basic = ITemplate.basic.value
+    langchain_basic = ITemplate.langchain_basic.value
+    full = ITemplate.full.value
     template_type: str = questionary.select(
-        "Choose a template", choices=[ITemplate.basic, questionary.Choice(ITemplate.full, disabled=disabled_message)]
+        "Choose a template", choices=[
+            basic,
+            langchain_basic,
+            questionary.Choice(full, disabled=disabled_message)
+        ]
     ).ask()
-    if template_type != ITemplate.basic:
+    if template_type == ITemplate.full:
         questionary.select(
             "Choose the authentication service",
             choices=[

create_fastapi_project/templates/__init__.py

@@ -6,6 +6,7 @@
 
 class ITemplate(str, Enum):
     basic = "basic"
+    langchain_basic = "langchain_basic"
     full = "full"    
 
 def install_template(root: str, template: ITemplate, app_name: str):
@@ -42,6 +43,15 @@ def install_template(root: str, template: ITemplate, app_name: str):
 
     if has_pyproject:
         dependencies = ["fastapi[all]", "fastapi-pagination[sqlalchemy]@^0.12.7", "asyncer@^0.0.2", "httpx@^0.24.1"]
+        if template == ITemplate.langchain_basic:
+            langchain_dependencies = [
+                "langchain@^0.0.265",
+                "openai@^0.27.8",
+                "adaptive-cards-py@^0.0.7",
+                "google-search-results@^2.4.2"
+            ]
+            dependencies[0] = "fastapi[all]@^0.99.1"
+            dependencies.extend(langchain_dependencies)
         dev_dependencies = ["pytest@^5.2", "mypy@^1.5.0", "ruff@^0.0.284", "black@^23.7.0"]
         print("- Installing main packages. This might take a couple of minutes.")
         install_dependencies(poetry_path, dependencies)

create_fastapi_project/templates/langchain_basic/.env.example

@@ -0,0 +1,4 @@
+PROJECT_NAME=
+OPENAI_API_KEY=
+UNSPLASH_API_KEY=
+SERP_API_KEY=

create_fastapi_project/templates/langchain_basic/Dockerfile

@@ -0,0 +1,19 @@
+FROM tiangolo/uvicorn-gunicorn-fastapi:python3.11
+ENV PYTHONUNBUFFERED=1
+WORKDIR /code
+# Install Poetry
+RUN apt clean && apt update && apt install curl -y
+RUN curl -sSL https://install.python-poetry.org | POETRY_HOME=/opt/poetry python && \
+    cd /usr/local/bin && \
+    ln -s /opt/poetry/bin/poetry && \
+    poetry config virtualenvs.create false
+
+# Copy poetry.lock* in case it doesn't exist in the repo
+COPY app/pyproject.toml app/poetry.lock* /code/
+
+# Allow installing dev dependencies to run tests
+ARG INSTALL_DEV=false
+RUN bash -c "if [ $INSTALL_DEV == 'true' ] ; then poetry install --no-root ; else poetry install --no-root --no-dev ; fi"
+
+ENV PYTHONPATH=/code
+EXPOSE 8000

create_fastapi_project/templates/langchain_basic/Makefile

@@ -0,0 +1,72 @@
+#!/usr/bin/make
+
+include .env
+
+help:
+	@echo "make"
+	@echo "    install"
+	@echo "        Install all packages of poetry project locally."
+	@echo "    run-app"
+	@echo "        Run app locally without docker."
+	@echo "    run-dev-build"
+	@echo "        Run development docker compose and force build containers."
+	@echo "    run-dev"
+	@echo "        Run development docker compose."
+	@echo "    stop-dev"
+	@echo "        Stop development docker compose."
+	@echo "    run-prod"
+	@echo "        Run production docker compose."
+	@echo "    stop-prod"
+	@echo "        Run production docker compose."	
+	@echo "    formatter"
+	@echo "        Apply black formatting to code."
+	@echo "    mypy"
+	@echo "        Check typing."		
+	@echo "    lint"
+	@echo "        Lint code with ruff, and check if black formatter should be applied."
+	@echo "    lint-watch"
+	@echo "        Lint code with ruff in watch mode."
+	@echo "    lint-fix"
+	@echo "        Lint code with ruff and try to fix."	
+	
+install:
+	cd app && poetry install && cd ..
+
+run-app:
+	cd app && poetry run uvicorn app.main:app --host 0.0.0.0 --port 8000 && cd ..
+
+
+run-dev-build:
+	docker compose -f docker-compose-dev.yml up --build
+
+run-dev:
+	docker compose -f docker-compose-dev.yml up
+
+stop-dev:
+	docker compose -f docker-compose-dev.yml down
+
+run-prod:
+	docker compose up --build
+
+stop-prod:
+	docker compose down
+
+formatter:
+	cd app && \
+	poetry run black app
+
+mypy:
+	cd app && \
+	poetry run mypy .
+
+lint:
+	cd app && \
+	poetry run ruff app && poetry run black --check app
+
+lint-watch:
+	cd app && \
+	poetry run ruff app --watch
+
+lint-fix:
+	cd app && \
+	poetry run ruff app --fix

create_fastapi_project/templates/langchain_basic/README.md

@@ -0,0 +1,104 @@
+# FastAPI Project with `create-fastapi-project`
+
+This is a FastAPI project initialized using [`create-fastapi-project`](https://github.com/allient/create-fastapi-project), designed to provide a quick start for building APIs with [FastAPI](https://fastapi.tiangolo.com/).
+
+## Required API Keys
+
+### OpenAI
+
+1. Create an account on [OpenAI](https://platform.openai.com/).
+2. Get your API key from [API Keys - OpenAI](https://platform.openai.com/account/api-keys).
+3. Set your API key as an environment variable named `OPENAI_API_KEY`.
+
+## Other API Keys (Optional if you want to use the template's custom tools)
+
+### Unsplash (Image Search)
+
+1. Create an account on [Unsplash](https://unsplash.com/developers).
+2. Create an app on [Unsplash Developers](https://unsplash.com/oauth/applications).
+3. Get your Access Key from [Your Applications - Unsplash Developers](https://unsplash.com/oauth/applications).
+4. Set your Access Key as an environment variable named `UNSPLASH_API_KEY`.
+
+### SerpApi (Search Engine Results Page API)
+
+1. Create an account on [SerpApi](https://serpapi.com/).
+2. Get your API key from [API Key - SerpApi](https://serpapi.com/manage-api-key).
+3. Set your API key as an environment variable named `SERP_API_KEY`.
+
+## Getting Started
+
+The commands in this documentation can be customized on the **Makefile**. It can be started with and without docker.
+
+- Run the server (Recommended using docker):
+
+```bash
+# Run locally with docker in dev mode and force build
+make run-dev-build
+# or
+# Run locally with docker in dev mode
+make run-dev
+# or
+# Run locally with docker in prod mode (Autoreload disabled)
+make run-prod
+```
+
+- Run the server without docker:
+
+First, make sure you have all packages installed:
+
+```bash
+make install
+```
+
+```bash
+make run-app
+```
+
+Open [http://localhost:8000/docs](http://localhost:8000/docs) with your browser to see the result.
+
+You can start editing the server by modifying `app/main.py`.
+
+## Demo Langchain Tools
+
+This template includes some tools to help you get started with your project:
+
+- Search pokemon by name or id
+- Search weather by city name
+- Search images by keyword
+- Search videos by keyword
+
+And also includes a agent that uses the tools to answer your questions.
+You can access the agent by opening [http://localhost:8000/chat](http://localhost:8000/chat) with your browser.
+
+## Learn More
+
+To learn more about Fastapi, take a look at the following resources:
+
+- [Fastapi Documentation](https://fastapi.tiangolo.com/).
+- [fastapi-alembic-sqlmodel-async](https://github.com/jonra1993/fastapi-alembic-sqlmodel-async).
+- [full-stack-fastapi-postgresql](https://github.com/tiangolo/full-stack-fastapi-postgresql).
+- [sqlmodel-tutorial](https://sqlmodel.tiangolo.com/tutorial/fastapi/).
+- [asyncer-tutorial](https://asyncer.tiangolo.com/tutorial/).
+- [fastapi-pagination](https://github.com/uriyyo/fastapi-pagination).
+- [fastapi-best-practices](https://github.com/zhanymkanov/fastapi-best-practices).
+- [awesome-fastapi](https://github.com/mjhea0/awesome-fastapi).
+
+## Why use Create FastAPI Project?
+
+`create-fastapi-project` provides a streamlined way to kickstart your FastAPI projects. Here are some compelling reasons to choose it for your project setup:
+
+### Interactive Experience
+
+Running `pip install create-fastapi-project@latest` (with no arguments) launches an interactive experience that guides you through the process of setting up your project. This interactive approach simplifies the initial configuration and gets you started quickly.
+
+### Zero Dependencies
+
+`create-fastapi-project` has been designed to be lightweight and efficient. It requires zero external dependencies, ensuring that your project remains unburdened by unnecessary packages.
+
+### Reliability and Maintenance
+
+`create-fastapi-project` is officially maintained by the [Allient development team](https://www.allient.io/). It is well-tested and aligns with best practices, ensuring that it functions as expected and remains up to date with FastAPI's releases.
+
+By choosing `create-fastapi-project`, you streamline your initial project setup, leverage reliable patterns, and enjoy the convenience of a tool tailored for FastAPI development.
+
+We love ❤️ [FastAPI](https://fastapi.tiangolo.com/) and its ecosystem. You can check out the [create-fastapi-project GitHub repository](https://github.com/allient/create-fastapi-project) - your feedback and contributions are welcome!

create_fastapi_project/templates/langchain_basic/app/README.md

@@ -0,0 +1,7 @@
+from fastapi import APIRouter
+from app.api.v1.endpoints import (
+    chat,
+)
+
+api_router = APIRouter()
+api_router.include_router(chat.router, prefix="/chat", tags=["chat"])