feat: add method to get the host name

lib/charms/hpc_libs/v0/slurm_ops.py

@@ -68,6 +68,7 @@ def _on_install(self, _) -> None:
 import json
 import logging
 import re
+import socket
 import subprocess
 from collections.abc import Mapping
 from enum import Enum
@@ -83,7 +84,7 @@ def _on_install(self, _) -> None:
 
 # Increment this PATCH version before using `charmcraft publish-lib` or reset
 # to 0 if you are raising the major API version
-LIBPATCH = 3
+LIBPATCH = 4
 
 # Charm library dependencies to fetch during `charmcraft pack`.
 PYDEPS = ["pyyaml>=6.0.1"]
@@ -291,3 +292,8 @@ def __init__(self, service: ServiceType) -> None:
         self._service = service
         self.config = ConfigurationManager(service.config_name)
         self.munge = MungeManager()
+
+    @property
+    def hostname(self) -> str:
+        """The hostname where this manager is running."""
+        return socket.gethostname().split(".")[0]

tests/unit/test_slurm_ops.py

@@ -219,6 +219,14 @@ def test_configure_munge(self, subcmd) -> None:
         args = subcmd.call_args[0][0]
         self.assertEqual(args, ["snap", "set", "slurm", "munge.max-thread-count=24"])
 
+    @patch("charms.hpc_libs.v0.slurm_ops.socket.gethostname")
+    def test_hostname(self, gethostname, *_) -> None:
+        """Test that manager is able to correctly get the host name."""
+        gethostname.return_value = "machine"
+        self.assertEqual(self.manager.hostname, "machine")
+        gethostname.return_value = "machine.domain.com"
+        self.assertEqual(self.manager.hostname, "machine")
+
 
 parameters = [
     (SlurmManagerBase(ServiceType.SLURMCTLD), "slurm"),