WSGI

If you use a WSGI framework not directly supported by the SDK, or wrote a raw WSGI app, you can use this generic WSGI middleware. It captures errors and attaches a basic amount of information for incoming requests.

Install

pip install --upgrade 'sentry-sdk'

Configure

In addition to capturing errors, you can monitor interactions between multiple services or applications by enabling tracing. You can also collect and analyze performance profiles from real users with profiling.

Select which Sentry features you'd like to install in addition to Error Monitoring to get the corresponding installation and configuration instructions below.

import sentry_sdk
from sentry_sdk.integrations.wsgi import SentryWsgiMiddleware

from my_wsgi_app import app

sentry_sdk.init(
    dsn="https://examplePublicKey@o0.ingest.sentry.io/0",
    # Set traces_sample_rate to 1.0 to capture 100%
    # of transactions for tracing.
    traces_sample_rate=1.0,
    # Set profiles_sample_rate to 1.0 to profile 100%
    # of sampled transactions.
    # We recommend adjusting this value in production.
    profiles_sample_rate=1.0,
)

app = SentryWsgiMiddleware(app)

Verify

This minimal WSGI application will create a transaction and send it to Sentry. The error will also be sent to Sentry and associated with the transaction:

import sentry_sdk
from sentry_sdk.integrations.wsgi import SentryWsgiMiddleware

sentry_sdk.init(...)  # same as above

def app(env, start_response):
    start_response('200 OK', [('Content-Type', 'text/plain')])
    response_body = 'Hello World'
    1 / 0  # this raises an error
    return [response_body.encode()]

app = SentryWsgiMiddleware(app)

# Run the application in a mini WSGI server.
from wsgiref.simple_server import make_server
make_server('', 8000, app).serve_forever()

Behavior

• Request data is attached to all events: HTTP method, URL, headers. Sentry excludes raw bodies and multipart file uploads. Sentry also excludes personally identifiable information (such as user ids, usernames, cookies, authorization headers, IP addresses) unless you set send_default_pii to True.

Each request has a separate scope. Changes to the scope within a view, for example setting a tag, will only apply to events sent as part of the request being handled.

• The WSGI middleware does not behave like a regular integration. It is not initialized through an extra parameter to init and is not attached to a client. When capturing or supplementing events, it just uses the currently active scopes.

Supported Versions

• Python: 3.6+