feat(anta.tests): Added testcase to validate hardware flow tracker (#722

)

issue-710: Added the validation for hardware flow tracker

anta/tests/flow_tracking.py

@@ -0,0 +1,186 @@
+# Copyright (c) 2023-2024 Arista Networks, Inc.
+# Use of this source code is governed by the Apache License 2.0
+# that can be found in the LICENSE file.
+"""Module related to the flow tracking tests."""
+
+# Mypy does not understand AntaTest.Input typing
+# mypy: disable-error-code=attr-defined
+from __future__ import annotations
+
+from typing import ClassVar
+
+from pydantic import BaseModel
+
+from anta.models import AntaCommand, AntaTemplate, AntaTest
+from anta.tools import get_failed_logs
+
+
+def validate_record_export(record_export: dict[str, str], tracker_info: dict[str, str]) -> str:
+    """
+    Validate the record export configuration against the tracker info.
+
+    Args:
+        record_export (dict): The expected record export configuration.
+        tracker_info (dict): The actual tracker info from the command output.
+
+    Returns
+    -------
+        str : A failure message if the record export configuration does not match, otherwise blank string.
+    """
+    failed_log = ""
+    actual_export = {"inactive timeout": tracker_info.get("inactiveTimeout"), "interval": tracker_info.get("activeInterval")}
+    expected_export = {"inactive timeout": record_export.get("on_inactive_timeout"), "interval": record_export.get("on_interval")}
+    if actual_export != expected_export:
+        failed_log = get_failed_logs(expected_export, actual_export)
+    return failed_log
+
+
+def validate_exporters(exporters: list[dict[str, str]], tracker_info: dict[str, str]) -> str:
+    """
+    Validate the exporter configurations against the tracker info.
+
+    Args:
+        exporters (list[dict]): The list of expected exporter configurations.
+        tracker_info (dict): The actual tracker info from the command output.
+
+    Returns
+    -------
+        str: Failure message if any exporter configuration does not match.
+    """
+    failed_log = ""
+    for exporter in exporters:
+        exporter_name = exporter["name"]
+        actual_exporter_info = tracker_info["exporters"].get(exporter_name)
+        if not actual_exporter_info:
+            failed_log += f"\nExporter `{exporter_name}` is not configured."
+            continue
+
+        expected_exporter_data = {"local interface": exporter["local_interface"], "template interval": exporter["template_interval"]}
+        actual_exporter_data = {"local interface": actual_exporter_info["localIntf"], "template interval": actual_exporter_info["templateInterval"]}
+
+        if expected_exporter_data != actual_exporter_data:
+            failed_msg = get_failed_logs(expected_exporter_data, actual_exporter_data)
+            failed_log += f"\nExporter `{exporter_name}`: {failed_msg}"
+    return failed_log
+
+
+class VerifyHardwareFlowTrackerStatus(AntaTest):
+    """
+    Verifies if hardware flow tracking is running and an input tracker is active.
+
+    This test optionally verifies the tracker interval/timeout and exporter configuration.
+
+    Expected Results
+    ----------------
+    * Success: The test will pass if hardware flow tracking is running and an input tracker is active.
+    * Failure: The test will fail if hardware flow tracking is not running, an input tracker is not active,
+               or the tracker interval/timeout and exporter configuration does not match the expected values.
+
+    Examples
+    --------
+    ```yaml
+    anta.tests.flow_tracking:
+      - VerifyFlowTrackingHardware:
+          trackers:
+            - name: FLOW-TRACKER
+              record_export:
+                on_inactive_timeout: 70000
+                on_interval: 300000
+              exporters:
+                - name: CV-TELEMETRY
+                  local_interface: Loopback0
+                  template_interval: 3600000
+    ```
+    """
+
+    name = "VerifyHardwareFlowTrackerStatus"
+    description = (
+        "Verifies if hardware flow tracking is running and an input tracker is active. Optionally verifies the tracker interval/timeout and exporter configuration."
+    )
+    categories: ClassVar[list[str]] = ["flow tracking"]
+    commands: ClassVar[list[AntaCommand | AntaTemplate]] = [AntaTemplate(template="show flow tracking hardware tracker {name}", revision=1)]
+
+    class Input(AntaTest.Input):
+        """Input model for the VerifyHardwareFlowTrackerStatus test."""
+
+        trackers: list[FlowTracker]
+        """List of flow trackers to verify."""
+
+        class FlowTracker(BaseModel):
+            """Detail of a flow tracker."""
+
+            name: str
+            """Name of the flow tracker."""
+
+            record_export: RecordExport | None = None
+            """Record export configuration for the flow tracker."""
+
+            exporters: list[Exporter] | None = None
+            """List of exporters for the flow tracker."""
+
+            class RecordExport(BaseModel):
+                """Record export configuration."""
+
+                on_inactive_timeout: int
+                """Timeout in milliseconds for exporting records when inactive."""
+
+                on_interval: int
+                """Interval in milliseconds for exporting records."""
+
+            class Exporter(BaseModel):
+                """Detail of an exporter."""
+
+                name: str
+                """Name of the exporter."""
+
+                local_interface: str
+                """Local interface used by the exporter."""
+
+                template_interval: int
+                """Template interval in milliseconds for the exporter."""
+
+    def render(self, template: AntaTemplate) -> list[AntaCommand]:
+        """Render the template for each hardware tracker."""
+        return [template.render(name=tracker.name) for tracker in self.inputs.trackers]
+
+    @AntaTest.anta_test
+    def test(self) -> None:
+        """Main test function for VerifyHardwareFlowTrackerStatus."""
+        self.result.is_success()
+        for command, tracker_input in zip(self.instance_commands, self.inputs.trackers):
+            hardware_tracker_name = command.params.name
+            record_export = tracker_input.record_export.model_dump() if tracker_input.record_export else None
+            exporters = [exporter.model_dump() for exporter in tracker_input.exporters] if tracker_input.exporters else None
+            command_output = command.json_output
+
+            # Check if hardware flow tracking is configured
+            if not command_output.get("running"):
+                self.result.is_failure("Hardware flow tracking is not running.")
+                return
+
+            # Check if the input hardware tracker is configured
+            tracker_info = command_output["trackers"].get(hardware_tracker_name)
+            if not tracker_info:
+                self.result.is_failure(f"Hardware flow tracker `{hardware_tracker_name}` is not configured.")
+                continue
+
+            # Check if the input hardware tracker is active
+            if not tracker_info.get("active"):
+                self.result.is_failure(f"Hardware flow tracker `{hardware_tracker_name}` is not active.")
+                continue
+
+            # Check the input hardware tracker timeouts
+            failure_msg = ""
+            if record_export:
+                record_export_failure = validate_record_export(record_export, tracker_info)
+                if record_export_failure:
+                    failure_msg += record_export_failure
+
+            # Check the input hardware tracker exporters' configuration
+            if exporters:
+                exporters_failure = validate_exporters(exporters, tracker_info)
+                if exporters_failure:
+                    failure_msg += exporters_failure
+
+            if failure_msg:
+                self.result.is_failure(f"{hardware_tracker_name}: {failure_msg}\n")

docs/api/tests.flow_tracking.md

@@ -0,0 +1,20 @@
+---
+anta_title: ANTA catalog for flow tracking tests
+---
+<!--
+  ~ Copyright (c) 2023-2024 Arista Networks, Inc.
+  ~ Use of this source code is governed by the Apache License 2.0
+  ~ that can be found in the LICENSE file.
+  -->
+
+::: anta.tests.flow_tracking
+    options:
+      show_root_heading: false
+      show_root_toc_entry: false
+      show_bases: false
+      merge_init_into_class: false
+      anta_hide_test_module_description: true
+      show_labels: true
+      filters:
+        - "!test"
+        - "!render"

docs/api/tests.md

@@ -18,6 +18,7 @@ Here are the tests that we currently provide:
 - [Configuration](tests.configuration.md)
 - [Connectivity](tests.connectivity.md)
 - [Field Notice](tests.field_notices.md)
+- [Flow Tracking](tests.flow_tracking.md)
 - [GreenT](tests.greent.md)
 - [Hardware](tests.hardware.md)
 - [Interfaces](tests.interfaces.md)

examples/tests.yaml

@@ -114,6 +114,21 @@ anta.tests.field_notices:
   - VerifyFieldNotice44Resolution:
   - VerifyFieldNotice72Resolution:
 
+anta.tests.flow_tracking:
+  - VerifyHardwareFlowTrackerStatus:
+      trackers:
+        - name: FLOW-TRACKER
+          record_export:
+            on_inactive_timeout: 700000
+            on_interval: 3000000
+          exporters:
+            - name: CV-TELEMETRY
+              local_interface: Loopback11
+              template_interval: 3600
+            - name: CVP-TELEMETRY
+              local_interface: Loopback01
+              template_interval: 36000000
+
 anta.tests.greent:
   - VerifyGreenT:
   - VerifyGreenTCounters:

mkdocs.yml

@@ -193,6 +193,7 @@ nav:
     - Configuration: api/tests.configuration.md
     - Connectivity: api/tests.connectivity.md
     - Field Notices: api/tests.field_notices.md
+    - Flow Tracking: api/test.flow_tracking.md
     - GreenT: api/tests.greent.md
     - Hardware: api/tests.hardware.md
     - Interfaces: api/tests.interfaces.md