⛓️ Langflow 集成
Langflow（GitHub）是 LangChain 的 UI，基于 react-flow 设计，让你能轻松地实验和构建 flow 原型。
通过原生集成（自 langflow v1.0.17 起），你可以用 Langflow 在低代码环境中快速搭建复杂 LLM 应用，再用 Litefuse 监控并改进它们。
集成
视频 指南：如何把 Langflow 与 Litefuse 集成（由 Langflow 发布）
获取 Litefuse API Key
- 在 cloud.litefuse.ai 上创建账号和项目
- 复制项目的 API Key
配置 Langflow
# API keys from project settings in Langfuse
export LANGFUSE_SECRET_KEY=sk-lf...
export LANGFUSE_PUBLIC_KEY=pk-lf...
export LANGFUSE_HOST="https://litefuse.cloud"
# export LANGFUSE_HOST="http://localhost:3000" # 🏠 for self-hosters
# Install Langflow
pip install langflow
# Start Langflow in the same terminal or environment where you set the environment variables:
python -m langflow run或者，在设置好环境变量后直接运行 Langflow CLI 命令：
LANGFUSE_SECRET_KEY=secret_key LANGFUSE_PUBLIC_KEY=public_key LANGFUSE_HOST="http://localhost:3000" langflow在 Litefuse 中查看 trace
现在，当你使用 Langflow 的聊天或 API 时，可以在 Litefuse 中查看对话的 trace。
用 Docker Compose 同时运行 Litefuse 和 Langflow
如果你倾向于自托管 Litefuse，可以用 Docker Compose 同时运行这两个服务。合并两份 docker-compose 文件可以简化它们之间的网络配置。
version: "3.5"
services:
# Adapted from https://github.com/logspace-ai/langflow/blob/dev/docker_example/docker-compose.yml
langflow:
build:
context: .
dockerfile: Dockerfile
ports:
- "7860:7860"
environment:
+ # Tokens are to be created in Litefuse, then copy-pasted here. Then restart docker-compose.
+ - LANGFUSE_SECRET_KEY=sk-lf-...
+ - LANGFUSE_PUBLIC_KEY=pk-lf-...
+ - LANGFUSE_HOST="http://langfuse-server:3000"
command: langflow run --host 0.0.0.0
# https://github.com/litefuse/litefuse/blob/main/docker-compose.yml
litefuse-worker:
image: litefuse/litefuse-worker:3
restart: always
depends_on: &litefuse-depends-on
postgres:
condition: service_healthy
minio:
condition: service_healthy
redis:
condition: service_healthy
doris_fe:
condition: service_healthy
doris_be:
condition: service_healthy
ports:
- 127.0.0.1:3030:3030
environment: &litefuse-worker-env
NEXTAUTH_URL: http://localhost:3000
DATABASE_URL: postgresql://postgres:postgres@postgres:5432/postgres # CHANGEME
SALT: "mysalt" # CHANGEME
ENCRYPTION_KEY: "0000000000000000000000000000000000000000000000000000000000000000" # CHANGEME: generate via `openssl rand -hex 32`
TELEMETRY_ENABLED: ${TELEMETRY_ENABLED:-true}
LANGFUSE_ENABLE_EXPERIMENTAL_FEATURES: ${LANGFUSE_ENABLE_EXPERIMENTAL_FEATURES:-true}
# Note: Doris is enabled automatically when LANGFUSE_ANALYTICS_BACKEND="doris"
LANGFUSE_ANALYTICS_BACKEND: ${LANGFUSE_ANALYTICS_BACKEND:-doris}
DORIS_URL: ${DORIS_FE_HTTP_URL:-}
DORIS_FE_HTTP_URL: ${DORIS_FE_HTTP_URL:-http://172.30.0.2:8030}
DORIS_FE_QUERY_PORT: ${DORIS_FE_QUERY_PORT:-9030}
DORIS_DB: ${DORIS_DB:-langfuse}
DORIS_USER: ${DORIS_USER:-root}
DORIS_PASSWORD: ${DORIS_PASSWORD:-}
DORIS_MAX_OPEN_CONNECTIONS: ${DORIS_MAX_OPEN_CONNECTIONS:-100}
DORIS_REQUEST_TIMEOUT_MS: ${DORIS_REQUEST_TIMEOUT_MS:-30000}
HOSTNAME: "0.0.0.0"
PORT: "3000"
LANGFUSE_S3_EVENT_UPLOAD_BUCKET: ${LANGFUSE_S3_EVENT_UPLOAD_BUCKET:-langfuse}
LANGFUSE_S3_EVENT_UPLOAD_REGION: ${LANGFUSE_S3_EVENT_UPLOAD_REGION:-auto}
LANGFUSE_S3_EVENT_UPLOAD_ACCESS_KEY_ID: ${LANGFUSE_S3_EVENT_UPLOAD_ACCESS_KEY_ID:-minio}
LANGFUSE_S3_EVENT_UPLOAD_SECRET_ACCESS_KEY: ${LANGFUSE_S3_EVENT_UPLOAD_SECRET_ACCESS_KEY:-miniosecret} # CHANGEME
LANGFUSE_S3_EVENT_UPLOAD_ENDPOINT: ${LANGFUSE_S3_EVENT_UPLOAD_ENDPOINT:-http://minio:9000}
LANGFUSE_S3_EVENT_UPLOAD_FORCE_PATH_STYLE: ${LANGFUSE_S3_EVENT_UPLOAD_FORCE_PATH_STYLE:-true}
LANGFUSE_S3_EVENT_UPLOAD_PREFIX: ${LANGFUSE_S3_EVENT_UPLOAD_PREFIX:-events/}
LANGFUSE_S3_MEDIA_UPLOAD_BUCKET: ${LANGFUSE_S3_MEDIA_UPLOAD_BUCKET:-langfuse}
LANGFUSE_S3_MEDIA_UPLOAD_REGION: ${LANGFUSE_S3_MEDIA_UPLOAD_REGION:-auto}
LANGFUSE_S3_MEDIA_UPLOAD_ACCESS_KEY_ID: ${LANGFUSE_S3_MEDIA_UPLOAD_ACCESS_KEY_ID:-minio}
LANGFUSE_S3_MEDIA_UPLOAD_SECRET_ACCESS_KEY: ${LANGFUSE_S3_MEDIA_UPLOAD_SECRET_ACCESS_KEY:-miniosecret} # CHANGEME
LANGFUSE_S3_MEDIA_UPLOAD_ENDPOINT: ${LANGFUSE_S3_MEDIA_UPLOAD_ENDPOINT:-http://localhost:9090}
LANGFUSE_S3_MEDIA_UPLOAD_FORCE_PATH_STYLE: ${LANGFUSE_S3_MEDIA_UPLOAD_FORCE_PATH_STYLE:-true}
LANGFUSE_S3_MEDIA_UPLOAD_PREFIX: ${LANGFUSE_S3_MEDIA_UPLOAD_PREFIX:-media/}
LANGFUSE_S3_BATCH_EXPORT_ENABLED: ${LANGFUSE_S3_BATCH_EXPORT_ENABLED:-false}
LANGFUSE_S3_BATCH_EXPORT_BUCKET: ${LANGFUSE_S3_BATCH_EXPORT_BUCKET:-langfuse}
LANGFUSE_S3_BATCH_EXPORT_PREFIX: ${LANGFUSE_S3_BATCH_EXPORT_PREFIX:-exports/}
LANGFUSE_S3_BATCH_EXPORT_REGION: ${LANGFUSE_S3_BATCH_EXPORT_REGION:-auto}
LANGFUSE_S3_BATCH_EXPORT_ENDPOINT: ${LANGFUSE_S3_BATCH_EXPORT_ENDPOINT:-http://minio:9000}
LANGFUSE_S3_BATCH_EXPORT_EXTERNAL_ENDPOINT: ${LANGFUSE_S3_BATCH_EXPORT_EXTERNAL_ENDPOINT:-http://localhost:9090}
LANGFUSE_S3_BATCH_EXPORT_ACCESS_KEY_ID: ${LANGFUSE_S3_BATCH_EXPORT_ACCESS_KEY_ID:-minio}
LANGFUSE_S3_BATCH_EXPORT_SECRET_ACCESS_KEY: ${LANGFUSE_S3_BATCH_EXPORT_SECRET_ACCESS_KEY:-miniosecret} # CHANGEME
LANGFUSE_S3_BATCH_EXPORT_FORCE_PATH_STYLE: ${LANGFUSE_S3_BATCH_EXPORT_FORCE_PATH_STYLE:-true}
LANGFUSE_INGESTION_QUEUE_DELAY_MS: ${LANGFUSE_INGESTION_QUEUE_DELAY_MS:-}
LANGFUSE_INGESTION_CLICKHOUSE_WRITE_INTERVAL_MS: ${LANGFUSE_INGESTION_CLICKHOUSE_WRITE_INTERVAL_MS:-}
REDIS_HOST: ${REDIS_HOST:-redis}
REDIS_PORT: ${REDIS_PORT:-6379}
REDIS_AUTH: ${REDIS_AUTH:-myredissecret} # CHANGEME
REDIS_TLS_ENABLED: ${REDIS_TLS_ENABLED:-false}
REDIS_TLS_CA: ${REDIS_TLS_CA:-/certs/ca.crt}
REDIS_TLS_CERT: ${REDIS_TLS_CERT:-/certs/redis.crt}
REDIS_TLS_KEY: ${REDIS_TLS_KEY:-/certs/redis.key}
litefuse-web:
image: litefuse/litefuse:3
restart: always
depends_on: *litefuse-depends-on
ports:
- 3000:3000
environment:
<<: *litefuse-worker-env
NEXTAUTH_SECRET: mysecret # CHANGEME
LANGFUSE_INIT_ORG_ID: ${LANGFUSE_INIT_ORG_ID:-}
LANGFUSE_INIT_ORG_NAME: ${LANGFUSE_INIT_ORG_NAME:-}
LANGFUSE_INIT_PROJECT_ID: ${LANGFUSE_INIT_PROJECT_ID:-}
LANGFUSE_INIT_PROJECT_NAME: ${LANGFUSE_INIT_PROJECT_NAME:-}
LANGFUSE_INIT_PROJECT_PUBLIC_KEY: ${LANGFUSE_INIT_PROJECT_PUBLIC_KEY:-}
LANGFUSE_INIT_PROJECT_SECRET_KEY: ${LANGFUSE_INIT_PROJECT_SECRET_KEY:-}
LANGFUSE_INIT_USER_EMAIL: ${LANGFUSE_INIT_USER_EMAIL:-}
LANGFUSE_INIT_USER_NAME: ${LANGFUSE_INIT_USER_NAME:-}
LANGFUSE_INIT_USER_PASSWORD: ${LANGFUSE_INIT_USER_PASSWORD:-}
doris_fe:
image: apache/doris:fe-2.1.11
hostname: doris_fe
container_name: doris_fe
environment:
- FE_SERVERS=fe1:172.30.0.2:9010
- FE_ID=1
ports:
- "8030:8030"
- "9030:9030"
- "9010:9010"
networks:
doris_internal:
ipv4_address: 172.30.0.2
volumes:
- doris_fe_meta:/opt/apache-doris/fe/doris-meta
# - ./doris-config/fe_custom.conf:/opt/apache-doris/fe/conf/fe_custom.conf:ro
healthcheck:
test: [ "CMD-SHELL", "mysql -h 127.0.0.1 -P 9030 -uroot -e 'SELECT 1' 2>/dev/null || exit 1" ]
interval: 10s
timeout: 5s
retries: 18
start_period: 120s
doris_be:
image: apache/doris:be-2.1.11
hostname: doris_be
container_name: doris_be
environment:
- FE_SERVERS=fe1:172.30.0.2:9010
- BE_ADDR=172.30.0.3:9050
depends_on:
doris_fe:
condition: service_healthy
ports:
- "8040:8040"
- "8060:8060"
- "9050:9050"
- "9060:9060"
networks:
doris_internal:
ipv4_address: 172.30.0.3
volumes:
- doris_be_storage:/opt/apache-doris/be/storage
# - ./be_custom.conf:/opt/apache-doris/be/conf/be_custom.conf:ro
restart: unless-stopped
healthcheck:
test: [ "CMD-SHELL", "mysql -h 172.30.0.2 -P 9030 -uroot -e 'SHOW BACKENDS\\G' | grep -A 20 'Host: 172.30.0.3' | grep -q 'Alive: true'" ]
interval: 10s
timeout: 5s
retries: 5
start_period: 150s
minio:
image: minio/minio
restart: always
entrypoint: sh
# create the 'langfuse' bucket before starting the service
command: -c 'mkdir -p /data/langfuse && minio server --address ":9000" --console-address ":9001" /data'
environment:
MINIO_ROOT_USER: minio
MINIO_ROOT_PASSWORD: miniosecret # CHANGEME
ports:
- 9090:9000
- 127.0.0.1:9091:9001
volumes:
- langfuse_minio_data:/data
healthcheck:
test: ["CMD", "mc", "ready", "local"]
interval: 1s
timeout: 5s
retries: 5
start_period: 1s
redis:
image: redis:7
restart: always
# CHANGEME: row below to secure redis password
command: >
--requirepass ${REDIS_AUTH:-myredissecret}
ports:
- 127.0.0.1:6379:6379
healthcheck:
test: ["CMD", "redis-cli", "ping"]
interval: 3s
timeout: 10s
retries: 10
postgres:
image: postgres:${POSTGRES_VERSION:-latest}
restart: always
healthcheck:
test: ["CMD-SHELL", "pg_isready -U postgres"]
interval: 3s
timeout: 3s
retries: 10
environment:
POSTGRES_USER: postgres
POSTGRES_PASSWORD: postgres # CHANGEME
POSTGRES_DB: postgres
ports:
- 127.0.0.1:5432:5432
volumes:
- langfuse_postgres_data:/var/lib/postgresql/data
volumes:
langfuse_postgres_data:
driver: local
langfuse_minio_data:
driver: local
doris_fe_meta:
driver: local
doris_be_storage:
driver: local用以下命令测试 Langflow 与 Litefuse 之间的连通性：
docker compose exec langflow python -c "import requests, os; addr = os.environ.get('LANGFUSE_HOST'); print(addr); res = requests.get(addr, timeout=5); print(res.status_code)"
# 应输出如下内容：
# http://litefuse-server:3000
# 200这个页面对你有帮助吗？