Add procedure to deploy langflow on AWS (#1177)

src/backend/langflow/alembic.ini

@@ -63,7 +63,7 @@ version_path_separator = os  # Use os.pathsep. Default configuration used for ne
 # This is the path to the db in the root of the project.
 # When the user runs the Langflow the database url will
 # be set dinamically.
-sqlalchemy.url = sqlite:///../../../langflow.db
+# sqlalchemy.url = sqlite:///../../../langflow.db
 
 
 [post_write_hooks]

src/backend/langflow/services/settings/base.py

@@ -86,29 +86,31 @@ class Settings(BaseSettings):
                 value = langflow_database_url
                 logger.debug("Using LANGFLOW_DATABASE_URL env variable.")
             else:
-                logger.debug("No DATABASE_URL env variable, using sqlite database")
+                # logger.debug("No DATABASE_URL env variable, using sqlite database")
+                logger.debug("No DATABASE_URL env variable, using custom database from secrets of {}".format(os.environ["host"]))
                 # Originally, we used sqlite:///./langflow.db
                 # so we need to migrate to the new format
                 # if there is a database in that location
-                if not values["CONFIG_DIR"]:
-                    raise ValueError(
-                        "CONFIG_DIR not set, please set it or provide a DATABASE_URL"
-                    )
+                # if not values["CONFIG_DIR"]:
+                #     raise ValueError(
+                #         "CONFIG_DIR not set, please set it or provide a DATABASE_URL"
+                #     )
 
-                new_path = f"{values['CONFIG_DIR']}/langflow.db"
-                if Path("./langflow.db").exists():
-                    if Path(new_path).exists():
-                        logger.debug(f"Database already exists at {new_path}, using it")
-                    else:
-                        try:
-                            logger.debug("Copying existing database to new location")
-                            copy2("./langflow.db", new_path)
-                            logger.debug(f"Copied existing database to {new_path}")
-                        except Exception:
-                            logger.error("Failed to copy database, using default path")
-                            new_path = "./langflow.db"
+                # new_path = f"{values['CONFIG_DIR']}/langflow.db"
+                # if Path("./langflow.db").exists():
+                #     if Path(new_path).exists():
+                #         logger.debug(f"Database already exists at {new_path}, using it")
+                #     else:
+                #         try:
+                #             logger.debug("Copying existing database to new location")
+                #             copy2("./langflow.db", new_path)
+                #             logger.debug(f"Copied existing database to {new_path}")
+                #         except Exception:
+                #             logger.error("Failed to copy database, using default path")
+                #             new_path = "./langflow.db"
 
-                value = f"sqlite:///{new_path}"
+                # value = f"sqlite:///{new_path}"
+                value = "mysql+pymysql://{}:{}@{}:3306/{}".format(os.environ["username"],os.environ["password"],os.environ["host"],os.environ["dbname"])
 
         return value
 

src/backend/langflow/settings.py

@@ -46,8 +46,10 @@ class Settings(BaseSettings):
                 value = langflow_database_url
                 logger.debug("Using LANGFLOW_DATABASE_URL env variable.")
             else:
-                logger.debug("No DATABASE_URL env variable, using sqlite database")
-                value = "sqlite:///./langflow.db"
+                # logger.debug("No DATABASE_URL env variable, using sqlite database")
+                logger.debug("No DATABASE_URL env variable, using custom database from secrets of {}".format(os.environ["host"]))
+                # value = "sqlite:///./langflow.db"
+                value = "mysql+pymysql://{}:{}@{}:3306/{}".format(os.environ["username"],os.environ["password"],os.environ["host"],os.environ["dbname"])
 
         return value
 

src/frontend/cdk.Dockerfile

@@ -0,0 +1,26 @@
+#baseline
+FROM --platform=linux/amd64 node:19-bullseye-slim AS base
+RUN mkdir -p /home/node/app
+RUN chown -R node:node /home/node && chmod -R 770 /home/node
+RUN apt-get update && apt-get install -y jq curl
+WORKDIR /home/node/app
+
+# client build
+FROM base AS builder-client
+ARG BACKEND_URL
+ENV BACKEND_URL $BACKEND_URL
+RUN echo "BACKEND_URL: $BACKEND_URL"
+
+WORKDIR /home/node/app
+COPY --chown=node:node . ./
+
+COPY ./set_proxy.sh .
+RUN chmod +x set_proxy.sh && \
+    cat set_proxy.sh | tr -d '\r' > set_proxy_unix.sh && \
+    chmod +x set_proxy_unix.sh && \
+    ./set_proxy_unix.sh
+
+USER node
+
+RUN npm install --loglevel warn
+CMD ["npm", "run", "dev:docker"]

src/frontend/src/modals/formModal/index.tsx

@@ -197,7 +197,8 @@ export default function FormModal({
     const isSecureProtocol =
       window.location.protocol === "https:" || window.location.port === "443";
     const webSocketProtocol = isSecureProtocol ? "wss" : "ws";
-    const host = isDevelopment ? "localhost:7860" : window.location.host;
+    // const host = isDevelopment ? "localhost:7860" : window.location.host;
+    const host = window.location.host;
     const chatEndpoint = `/api/v1/chat/${chatId}`;
 
     return `${