[#143] Change network utils

Signed-off-by: Dmitriy Zayakin <d.zayakin@yadro.com>

src/frostfs_testlib/hosting/interfaces.py

@@ -5,6 +5,7 @@ from typing import Optional
 from frostfs_testlib.hosting.config import CLIConfig, HostConfig, ServiceConfig
 from frostfs_testlib.shell.interfaces import Shell
 from frostfs_testlib.testing.readable import HumanReadableEnum
+from frostfs_testlib.testing.test_control import retry
 
 
 class HostStatus(HumanReadableEnum):
@@ -25,9 +26,7 @@ class Host(ABC):
 
     def __init__(self, config: HostConfig) -> None:
         self._config = config
-        self._service_config_by_name = {
-            service_config.name: service_config for service_config in config.services
-        }
+        self._service_config_by_name = {service_config.name: service_config for service_config in config.services}
         self._cli_config_by_name = {cli_config.name: cli_config for cli_config in config.clis}
 
     @property
@@ -323,9 +322,7 @@ class Host(ABC):
         """
 
     @abstractmethod
-    def wait_for_service_to_be_in_state(
-        self, systemd_service_name: str, expected_state: str, timeout: int
-    ) -> None:
+    def wait_for_service_to_be_in_state(self, systemd_service_name: str, expected_state: str, timeout: int) -> None:
         """
             Waites for service to be in specified state.
 
@@ -335,3 +332,23 @@ class Host(ABC):
             timeout: Seconds to wait
 
         """
+
+    def down_interface(self, interface: str) -> None:
+        shell = self.get_shell()
+        shell.exec(f"ip link set {interface} down")
+
+    def up_interface(self, interface: str) -> None:
+        shell = self.get_shell()
+        shell.exec(f"ip link set {interface} up")
+
+    def check_state(self, interface: str) -> str:
+        shell = self.get_shell()
+        return shell.exec(f"ip link show {interface} | sed -z 's/.*state \(.*\) mode .*/\\1/'").stdout.strip()
+
+    @retry(max_attempts=5, sleep_interval=5, expected_result="UP")
+    def check_state_up(self, interface: str) -> str:
+        return self.check_state(interface=interface)
+
+    @retry(max_attempts=5, sleep_interval=5, expected_result="DOWN")
+    def check_state_down(self, interface: str) -> str:
+        return self.check_state(interface=interface)