Application Monitoring

This is a multi-language/framework project that implements Empower Plant web app. It has one actively maintained frontend, react, that can connect to any one of the backend implementations using a query string parameter (e.g. ?backend=express) and uses flask by default.

Features

• Error Monitoring...Performance Monitoring...Release Health...
• BrowserTracing (Performance)
• Session Replay
• Sentry.Profiler (class components)
• Sentry.withSentryRouting(Route); (react-router)
• FlaskIntegration, SqlAlchemyIntegration

sentry	version
@sentry/react	6.16.1
@sentry/tracing	6.16.1
sentry_sdk	1.5.1
@sentry/node	6.16.1
sentry-spring-boot-starter	5.5.1
sentry-logback	5.5.1

Additional documentation

• project README's in subdirectories (e.g. react/README.md
• "New deploy.sh and env-config for application-monitoring" (internal doc)
• See troubleshooting
• "Checklist for adding new language/framework demo to application-monitoring" (internal doc)
• comment at the top of deploy.sh file.

Setup

1. Permit your IP address in CloudSQL:
   1. Go to https://console.cloud.google.com/sql/instances
   2. You will see 1 instance, under Actions column click "..." -> Edit
   3. Expand "Connections", under Authorized Networks click "ADD NETWORK"
   4. Google "my IP address", add it.
2. Copy local.env from application-monitoring-config into env-config directory of your local repo, or, if you don't have access to it, follow env-config/example.env.
3. The REACT_APP_FLASK_BACKEND in env-config/local.env points to the backend instance deployed to AppEngine, the same one used by the cloud-hosted React web app. Flask is the default backend. If you expect to run other backend types, add values for those in env-config in your local.env file as well (i.e. REACT_APP_EXPRESS_BACKEND).
4. Confirm Homebrew is installed with brew -v. If not, install using /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)".
5. Confirm PostgreSQL is installed with Postgres -V. If not, install using brew install postgresql.
6. As the application is compatible with specific versions of node and npm, install the following to be able to set the specific versions required (below describes how to achieve it using n package, but alternatively you can use nvm):
   1. Install compatible npm version with npm install -g npm@XX.XX.XX. NOTE: may need to use sudo with command.
   2. Install n to update node version with npm install -g n.
   3. Set the specific node version with n XX.XX.XX. NOTE: may need to use sudo with command.
7. Configure the CLI using this document.
8. Install gcloud in the root of your project to be able to deploy to staging. Initialize the gcloud CLI by running gcloud init. When prompted, choose the project sales-engineering-sf.

Following sub-projects might not work with deploy.sh at this moment. Consult their README's for how to run and deploy them (and feel free to submit a PR that fixes it):

• vue
• ruby

NOTE: build.sh and run.sh files in each project are not meant to be run directly, use top-level deploy.sh instead because it sets all required environment variables.

If you run locally and only deploy react it will point to staging backends, however if you include a backend projects in the command react will magically point to it instead of staging (still requires &backend=<backend> url param).

deploy.sh takes another argument --env=<env>, which can be either local, staging or production. Each value corresponds to a file in env-config directory. local is a special value, most significantly it will run all webservers locally instead of deploying to Google App Engine.

deploy.sh does everything including validating that all required values are set in the env-config/*.env, that each project's DSN and project name point to the same project, and that you are not accidentally deploying to production, etc.

Run

Pick one of two ways to run the React app:

1) Run React app w/ sourcemaps, suspect commits

Recommended to use this command rather than npm start, as deploy.sh uploads source maps and handles crashes more realistically.

./deploy.sh --env=local react flask

or

./deploy.sh react --env=local

2) Run React app w/ hot reload

NOTE: this will cause crashing errors to be tagged in sentry as handled (handled: true)

cd react
../env.sh local npm start

The React app will default to Flask as its backend

// points to Flask
localhost:5000

// points to Express
localhost:5000?backend=express
localhost:5000/products?se=yourname&backend=express

// throw an exception on any route via 'crash'
localhost:5000?crash=true

Trigger an error

Add +2 quantity of a single item to Cart and purchase in order to trigger an Error. Visit the routes defined in src/index.js to produce transactions.

Deploy to Prod

This script deploys the flagship apps React + Flask. For deploying a single app to App Engine, check each platform's README for specific instructions. Make sure you don't have any local changes to env-config/production.env.

./deploy.sh react --env=production

You can put all 4 apps in deploy.sh for deployment, but that's 4 apps you could be taking down at once, which other people are relying on. With great power, comes great responsibility.

Run gcloud auth login if it asks you to authenticate, or insert YubiKey.

Deploy to Staging

./deploy.sh react flask vue --env=staging

Updating The Apps

## Check if you're on your fork. If so, you should see:
git remote -v
origin	git@github.com:<your_handle>/application-monitoring.git (fetch)
origin	git@github.com:<your_handle>/application-monitoring.git (push)
upstream	git@github.com:sentry-demos/application-monitoring.git (fetch)
upstream	git@github.com:sentry-demos/application-monitoring.git (push)

# If you don't have an upstream
git remote add upstream git@github.com:sentry-demos/application-monitoring.git

# Make sure you're on master
git checkout master

# get updates from the upstream
git fetch upstream master
git merge upstream/master

# merge those updates into your current branch, if it's behind
git checkout yourbranch
git merge master

Troubleshooting

See troubleshooting

Gcloud

gcloud app versions list
gcloud app deploy
gcloud app browse
gcloud app services list
gcloud app logs tail -s application-monitoring-react
gcloud app logs tail -s application-monitoring-flask
gcloud --help
gcloud topic configurations
gcloud auth
gcloud auth application-default
gcloud auth login
gcloud auth list
gcloud config set account `ACCOUNT`
gcloud config list, to display current account

gcloud app deploy does not support --update-env-vars RELEASE=$RELEASE like gcloud run deploy does with Cloud Run

Versions

non-sentry	version
npx	7.8.0
npm	7.8.0
node	v.14.2.0
python	3
react	^17.0.2
react-dom	^17.0.2
react-router-dom	^5.2.0
react-scripts	4.0.3