diff options
Diffstat (limited to 'cloudinit/sources/__init__.py')
| -rw-r--r-- | cloudinit/sources/__init__.py | 29 |
1 files changed, 28 insertions, 1 deletions
diff --git a/cloudinit/sources/__init__.py b/cloudinit/sources/__init__.py index 12430401..565e1754 100644 --- a/cloudinit/sources/__init__.py +++ b/cloudinit/sources/__init__.py @@ -307,6 +307,33 @@ class DataSource(CloudInitPickleMixin, metaclass=abc.ABCMeta): def __str__(self): return type_utils.obj_name(self) + def ds_detect(self) -> bool: + """Check if running on this datasource""" + return True + + def override_ds_detect(self): + """Override if either: + - only a single datasource defined (nothing to fall back to) + - TODO: commandline argument is used (ci.ds=OpenStack) + """ + return self.sys_cfg.get("datasource_list", []) in ( + [self.dsname], + [self.dsname, "None"], + ) + + def _check_and_get_data(self): + """Overrides runtime datasource detection""" + if self.override_ds_detect(): + LOG.debug( + "Machine is configured to run on single datasource %s.", self + ) + elif self.ds_detect(): + LOG.debug("Machine is running on %s.", self) + else: + LOG.debug("Datasource type %s is not detected.", self) + return False + return self._get_data() + def _get_standardized_metadata(self, instance_data): """Return a dictionary of standardized metadata keys.""" local_hostname = self.get_hostname().hostname @@ -370,7 +397,7 @@ class DataSource(CloudInitPickleMixin, metaclass=abc.ABCMeta): Minimally, the datasource should return a boolean True on success. """ self._dirty_cache = True - return_value = self._get_data() + return_value = self._check_and_get_data() if not return_value: return return_value self.persist_instance_data() |