diff options
Diffstat (limited to 'roles/openshift_health_checker/openshift_checks/mixins.py')
-rw-r--r-- | roles/openshift_health_checker/openshift_checks/mixins.py | 58 |
1 files changed, 49 insertions, 9 deletions
diff --git a/roles/openshift_health_checker/openshift_checks/mixins.py b/roles/openshift_health_checker/openshift_checks/mixins.py index 657e15160..2cb2e21aa 100644 --- a/roles/openshift_health_checker/openshift_checks/mixins.py +++ b/roles/openshift_health_checker/openshift_checks/mixins.py @@ -1,18 +1,58 @@ -# pylint: disable=missing-docstring +""" +Mixin classes meant to be used with subclasses of OpenShiftCheck. +""" + from openshift_checks import get_var class NotContainerizedMixin(object): """Mixin for checks that are only active when not in containerized mode.""" + # permanent # pylint: disable=too-few-public-methods + # Reason: The mixin is not intended to stand on its own as a class. @classmethod def is_active(cls, task_vars): - return ( - # This mixin is meant to be used with subclasses of OpenShiftCheck. - super(NotContainerizedMixin, cls).is_active(task_vars) and - not cls.is_containerized(task_vars) - ) + """Only run on non-containerized hosts.""" + is_containerized = get_var(task_vars, "openshift", "common", "is_containerized") + return super(NotContainerizedMixin, cls).is_active(task_vars) and not is_containerized + + +class DockerHostMixin(object): + """Mixin for checks that are only active on hosts that require Docker.""" + + dependencies = [] - @staticmethod - def is_containerized(task_vars): - return get_var(task_vars, "openshift", "common", "is_containerized") + @classmethod + def is_active(cls, task_vars): + """Only run on hosts that depend on Docker.""" + is_containerized = get_var(task_vars, "openshift", "common", "is_containerized") + is_node = "nodes" in get_var(task_vars, "group_names", default=[]) + return super(DockerHostMixin, cls).is_active(task_vars) and (is_containerized or is_node) + + def ensure_dependencies(self, task_vars): + """ + Ensure that docker-related packages exist, but not on atomic hosts + (which would not be able to install but should already have them). + Returns: msg, failed, changed + """ + if get_var(task_vars, "openshift", "common", "is_atomic"): + return "", False, False + + # NOTE: we would use the "package" module but it's actually an action plugin + # and it's not clear how to invoke one of those. This is about the same anyway: + result = self.execute_module( + get_var(task_vars, "ansible_pkg_mgr", default="yum"), + {"name": self.dependencies, "state": "present"}, + task_vars=task_vars, + ) + msg = result.get("msg", "") + if result.get("failed"): + if "No package matching" in msg: + msg = "Ensure that all required dependencies can be installed via `yum`.\n" + msg = ( + "Unable to install required packages on this host:\n" + " {deps}\n{msg}" + ).format(deps=',\n '.join(self.dependencies), msg=msg) + failed = result.get("failed", False) or result.get("rc", 0) != 0 + changed = result.get("changed", False) + return msg, failed, changed |