pipeline_runtime: PipelineRuntime inherits from ABC

The PipelineRuntime is an interface and thus we should annotated all its
methods as abstract.

Author: Jan Viktorin

Diff for: lbr_testsuite/dpdk_application/pipeline_runtime.py

@@ -8,16 +8,21 @@
 Define interface for accessing pipeline runtime of (DPDK) application.
 """
 
+from abc import ABC, abstractmethod
 
-class PipelineRuntime:
+
+class PipelineRuntime(ABC):
     """Interface for accessing pipeline runtime."""
 
+    @abstractmethod
     def get_pid(self):
         pass
 
+    @abstractmethod
     def get_pipeline_names(self) -> list[str]:
         pass
 
+    @abstractmethod
     def get_worker_status(self, worker_id: int, name: str = None):
         """Obtain worker's status in the selected pipeline.
 
@@ -31,6 +36,7 @@ def get_worker_status(self, worker_id: int, name: str = None):
 
         pass
 
+    @abstractmethod
     def get_workers_count(self, name: str = None):
         """Obtain count of workers of the selected pipeline.
 
@@ -42,6 +48,7 @@ def get_workers_count(self, name: str = None):
 
         pass
 
+    @abstractmethod
     def get_pipeline_stage_names(self, name: str = None) -> list[str]:
         """Obtain list of stage names of the selected pipeline.
 
@@ -53,9 +60,11 @@ def get_pipeline_stage_names(self, name: str = None) -> list[str]:
 
         pass
 
+    @abstractmethod
     def wait_until_active(self, timeout=5):
         pass
 
+    @abstractmethod
     def get_worker_chain_status(self, worker_id: int, name: str = None) -> dict:
         """Obtain worker's chain status in the selected pipeline.
 
@@ -69,6 +78,7 @@ def get_worker_chain_status(self, worker_id: int, name: str = None) -> dict:
 
         pass
 
+    @abstractmethod
     def get_stats(self) -> dict:
         """Obtain pipeline's statistics across all ports.
 
@@ -81,6 +91,7 @@ def get_stats(self) -> dict:
 
         pass
 
+    @abstractmethod
     def get_xstats(self) -> dict:
         """Obtain pipeline's extended statistics across all ports.
 
@@ -93,6 +104,7 @@ def get_xstats(self) -> dict:
 
         pass
 
+    @abstractmethod
     def get_mempool_stats(self) -> list[dict]:
         """Obtain statistics of mempools in the underlying application if any.
         Each mempool is identified by a unique name.