AWS Lambda ¶

The support for Amazon Lambda for PHP and Python languages is unofficial and community-driven.

The Agent ¶

The Blackfire Agent cannot be run in a lambda, and thus needs to be installed on a separate server, e.g. an Amazon EC2 instance.

An Amazon Machine Image (AMI) can be found in the EC2 community AMI list. You can find it as Blackfire.io Agent.

You may choose a t2.micro type, as the agent does not need much computing power.

Once your instance is started, take note of its private IP. Launch an SSH session and update the system packages using apt. This ensures that the agent is up-to-date:

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sudo apt update
sudo apt upgrade

You then need to configure the agent with your Blackfire server credentials.

The agent is already configured to accept connections from any IP on port 8307. This is safe as long as port 8307 is not accessible from the internet. (Only port 22 is accessible from the internet by default.)

Once you have finished configuring the agent, don't forget to restart it:

sudo systemctl restart blackfire-agent

PHP Lambda ¶

To deploy PHP Lambdas, we recommend using the Bref framework, which relies itself on the Serverless framework. You may need to follow the Bref installation documentation.

In this context, the Blackfire Probe can be installed with Lambda layers, provided by the Bref Extra Extensions repository.

composer require bref/extra-php-extensions

Edit the serverless.yml file:

# ...

plugins:
    - ./vendor/bref/bref
    - ./vendor/bref/extra-php-extensions # <---- Add the extra Serverless plugin

functions:
    console:
        handler: public/index.php
        layers:
            - ${bref:layer.php-fpm-81}
            - ${bref-extra:blackfire-php-81} # <---- Add the Blackfire probe

Create the php/conf.d/blackfire.ini file:

extension=/opt/bref-extra/blackfire.so

; Replace the following value by your agent IP or domain address.
blackfire.agent_socket = tcp://ip-172-40-40-40.eu-central-1.compute.internal:8307
blackfire.agent_timeout = 0.25

And deploy:

serverless deploy

Python Lambda ¶

In Python, the Blackfire Probe is a PIP package, using pre-compiled binaries. Amazon has a specific procedure to upload such packages, but the Serverless framework can make it easier by automating everything for you.

Example with Blackfire and Flask:

pip install flask
pip install blinker
pip install blackfire

pip freeze > requirements.txt

Edit your serverless.yml file:

# serverless.yml
service: serverless-flask
plugins:
  - serverless-python-requirements
  - serverless-wsgi

custom:
  wsgi:
    app: app.app
    packRequirements: false
  pythonRequirements:
    dockerizePip: non-linux

provider:
  name: aws
  runtime: python3.8
  stage: dev
  region: us-east-1

functions:
  app:
    handler: wsgi.handler
    events:
      - http: ANY /
      - http: 'ANY {proxy+}'
    environment:
      # Change the agent socket to fit yours.
      BLACKFIRE_AGENT_SOCKET: "tcp://ip-172-40-40-40.eu-central-1.compute.internal:8307"
      BLACKFIRE_CLIENT_ID: "<YOUR-BLACKFIRE-CLIENT-ID>"
      BLACKFIRE_CLIENT_TOKEN: "<YOUR-BLACKFIRE-CLIENT-TOKEN>"
      BLACKFIRE_LOG_FILE: /tmp/blackfire_probe.log

And deploy your lambda:

serverless deploy