Tempo tracing

.github/workflows/integration_test.yaml

@@ -14,7 +14,7 @@ jobs:
       extra-arguments: -x --localstack-address 172.17.0.1
       pre-run-script: localstack-installation.sh
       charmcraft-channel: latest/edge
-      modules: '["test_charm.py", "test_cos.py", "test_database.py", "test_db_migration.py", "test_django.py", "test_django_integrations.py", "test_fastapi.py", "test_go.py", "test_integrations.py", "test_proxy.py", "test_workers.py"]'
+      modules: '["test_charm.py", "test_cos.py", "test_database.py", "test_db_migration.py", "test_django.py", "test_django_integrations.py", "test_fastapi.py", "test_go.py", "test_integrations.py", "test_proxy.py", "test_workers.py", "test_tracing.py"]'
       rockcraft-channel: latest/edge
       juju-channel: ${{ matrix.juju-version }}
       channel: 1.29-strict/stable

app.py

@@ -0,0 +1,19 @@
+# Copyright 2025 Canonical Ltd.
+# See LICENSE file for licensing details.
+
+from flask import Flask
+import time
+
+app = Flask(__name__)
+
+
+@app.route("/")
+def index():
+    return "Hello, world!"
+
+@app.route("/io")
+def io_bound_task():
+    start_time = time.time()
+    time.sleep(2)
+    duration = time.time() - start_time
+    return f"I/O task completed in {round(duration, 2)} seconds"

docs/.sphinx/_static/css/pdf.css

@@ -17,4 +17,4 @@
     margin-left: -0.5rem;
     padding-left: .5rem;
     padding-right: .5rem;
-}
+}

docs/explanation/index.rst

@@ -10,4 +10,3 @@ on key topics related to the use and configuration of
 
 .. toctree::
    :maxdepth: 1
-

docs/tutorial/index.rst

@@ -8,5 +8,3 @@ Developer tutorials for the 12-factor app project.
 
 .. toctree::
    :maxdepth: 1
-
-

examples/django/charm/charmcraft.yaml

@@ -93,6 +93,10 @@ requires:
     interface: postgresql_client
     optional: False
     limit: 1
+  tracing:
+    interface: tracing
+    optional: True
+    limit: 1
 resources:
   django-app-image:
     description: django application image.