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# pylint: disable=missing-docstring
from openshift_checks import OpenShiftCheck, OpenShiftCheckException, get_var
class MemoryAvailability(OpenShiftCheck):
"""Check that recommended memory is available."""
name = "memory_availability"
tags = ["preflight"]
recommended_memory_mb = {
"nodes": 8 * 1000,
"masters": 16 * 1000,
"etcd": 10 * 1000,
}
@classmethod
def is_active(cls, task_vars):
"""Skip hosts that do not have recommended memory space requirements."""
group_names = get_var(task_vars, "group_names", default=[])
has_mem_space_recommendation = bool(set(group_names).intersection(cls.recommended_memory_mb))
return super(MemoryAvailability, cls).is_active(task_vars) and has_mem_space_recommendation
def run(self, tmp, task_vars):
group_names = get_var(task_vars, "group_names", default=[])
total_memory = get_var(task_vars, "ansible_memtotal_mb")
recommended_memory_mb = max(self.recommended_memory_mb.get(group, 0) for group in group_names)
if not recommended_memory_mb:
msg = "Unable to determine recommended memory size for group_name {group_name}"
raise OpenShiftCheckException(msg.format(group_name=group_names))
if total_memory < recommended_memory_mb:
msg = ("Available memory ({available} MB) below recommended storage. "
"Minimum required memory: {recommended} MB")
return {"failed": True, "msg": msg.format(available=total_memory, recommended=recommended_memory_mb)}
return {"changed": False}
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