2.3.0 Rollbar

0. Learning Materials

• Video: Week 2 - Rollbar

• Andrew's repo: week-2-rollbar

• My branch repo: 02-03-rollbar

  • My commits:

    • #14 Implemented Rollbar in the backend

    • #14 Minor changes to troubleshoot rollbar not calling home

    • #14 BUG FIX rollbar now colling home, spans comming through

Task List

• Implement Rollbar

  • Update requirements.txt

  • Implement Rollbar in app.py

• Update the backend-container of docker-compose

Env Variables

Micro service	Variables
backend	HONEYCOMB_API_KEY OTEL_SERVICE_NAME OTEL_EXPORTER_OTLP_ENDPOINT OTEL_EXPORTER_OTLP_HEADERS AWS_XRAY_URL AWS_XRAY_DAEMON_ADDRESS AWS_DEFAULT_REGION AWS_ACCESS_KEY_ID AWS_SECRET_ACCESS_KEY ROLLBAR_ACCESS_TOKEN
x-ray daemon	AWS_ACCESS_KEY_ID AWS_SECRET_ACCESS_KEY AWS_REGION

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1. Workflow

1. Implement Rollbar

1.1. Update requirements.txt

Rollbar is an error monitoring platform, similar to all the other observability tools we have implemented so far - AWS X-Ray, CloudWatch and Honeycomb.

requirements.txt

+ blinker
+ rollbar

• Now, run pip install -r requirements.txt so the Rollbar libraries are installed locally.

1.2. Implement rollbar in app.py

Below is the original code provided by Rollbar to setup Rollbar SDK. However, the Flask server will break cause it's buggy.

app.py

from time import strftime
import os
import rollbar
import rollbar.contrib.flask
from flask import got_request_exception

@app.before_first_request
def init_rollbar():
    """init rollbar module"""
    rollbar.init(
        # access token
        'ROLLBAR_ACCESS_TOKEN',
        # environment name
        'production',
        # server root directory, makes tracebacks prettier
        root=os.path.dirname(os.path.realpath(__file__)),
        # flask already sets up logging
        allow_logging_basic_config=False)

    # send exceptions from `app` to rollbar, using flask's signal system.
    got_request_exception.connect(rollbar.contrib.flask.report_exception, app)

In order to add the working code to app.py across the file where appropriate, refer to:

• the working code for init_rollbar()

• app.py

Also refer to the troubleshooting log "Bug Fix: pyrollbar: No access_token provided." here.

2. Update the backend-container of docker-compose

Update the environment variable for the backend-container in docker.compose.

docker-compose.yml

version: "3.8"
services:
  backend-flask:
    environment:
+      ROLLBAR_ACCESS_TOKEN: "${ROLLBAR_ACCESS_TOKEN}"

Then run docker-compose.