feat: Check otelcol logs in COS tests

.github/workflows/_integration.yml

@@ -1,4 +1,5 @@
 name: Test the Terraform product module
+run-name: Deploy ${{ inputs.product }} on ${{ inputs.runner }}
 
 on:
   workflow_dispatch:

tests/integration/cos/tls_external/test_upgrade_cos_tls_external.py

@@ -11,6 +11,7 @@
     catalogue_apps_are_reachable,
     get_tls_context,
     refresh_o11y_apps,
+    no_errors_in_otelcol_logs,
     wait_for_active_idle_without_error,
 )
 
@@ -57,3 +58,4 @@ def test_deploy_to_track(
     wait_for_active_idle_without_error([ca_model, cos_model])
     tls_ctx = get_tls_context(tmp_path, ca_model, "self-signed-certificates")
     catalogue_apps_are_reachable(cos_model, tls_ctx)
+    no_errors_in_otelcol_logs(cos_model)

tests/integration/cos/tls_external/track-2.tf

@@ -16,6 +16,7 @@ variable "ca_model" {
   type = string
 }
 
+
 data "juju_model" "ca-model" {
   name  = var.ca_model
   owner = "admin"

tests/integration/cos/tls_full/test_upgrade_cos_tls_full.py

@@ -10,6 +10,7 @@
 from helpers import (
     catalogue_apps_are_reachable,
     get_tls_context,
+    no_errors_in_otelcol_logs,
     refresh_o11y_apps,
     wait_for_active_idle_without_error,
 )
@@ -57,3 +58,4 @@ def test_deploy_to_track(
     wait_for_active_idle_without_error([ca_model, cos_model])
     tls_ctx = get_tls_context(tmp_path, ca_model, "self-signed-certificates")
     catalogue_apps_are_reachable(cos_model, tls_ctx)
+    no_errors_in_otelcol_logs(cos_model)

tests/integration/cos/tls_internal/test_upgrade_cos_tls_internal.py

@@ -9,6 +9,7 @@
 
 from helpers import (
     catalogue_apps_are_reachable,
+    no_errors_in_otelcol_logs,
     refresh_o11y_apps,
     wait_for_active_idle_without_error,
 )
@@ -50,3 +51,4 @@ def test_deploy_to_track(tmp_path, tf_manager, cos_model: jubilant.Juju):
     # THEN the model is upgraded and is healthy
     wait_for_active_idle_without_error([cos_model])
     catalogue_apps_are_reachable(cos_model)
+    no_errors_in_otelcol_logs(cos_model)

tests/integration/cos/tls_none/test_upgrade_cos_tls_none.py

@@ -9,6 +9,7 @@
 
 from helpers import (
     catalogue_apps_are_reachable,
+    no_errors_in_otelcol_logs,
     refresh_o11y_apps,
     wait_for_active_idle_without_error,
 )
@@ -50,3 +51,4 @@ def test_deploy_to_track(tmp_path, tf_manager, cos_model: jubilant.Juju):
     # THEN the model is upgraded and is healthy
     wait_for_active_idle_without_error([cos_model])
     catalogue_apps_are_reachable(cos_model)
+    no_errors_in_otelcol_logs(cos_model)

tests/integration/helpers.py

@@ -9,6 +9,7 @@
 from urllib.request import urlopen
 
 import jubilant
+import pytest
 
 
 class TfDirManager:
@@ -99,3 +100,17 @@ def catalogue_apps_are_reachable(
             continue
         response = urlopen(url, data=None, timeout=2.0, context=tls_context)
         assert response.code == 200, f"{app} was not reachable"
+
+
+@pytest.mark.skip(
+    reason="""Waiting for the following issues to be resolved:
+- https://github.com/canonical/cos-coordinated-workers/issues/123
+- https://github.com/canonical/tempo-operators/issues/254
+- https://github.com/canonical/cos-coordinated-workers/issues/115
+"""
+)
+def no_errors_in_otelcol_logs(juju: jubilant.Juju):
+    # By default, no debug exporters have been configured and otelcol logs at the WARN level
+    # Thus, there should be no logs outputted if otelcol is operating correctly
+    stdout = juju.ssh("otelcol/0", "pebble logs", container="otelcol")
+    assert not stdout