def find_resources_to_manage(resource_el):
"""
Get resources to manage to manage the specified resource succesfully
etree resource_el -- resource element
"""
# If the resource_el is a primitive in a group, we set both the group and
# the primitive to managed mode. Otherwise the resource_el, all its
# children and parents need to be set to managed mode. We do it to make
# sure to remove the unmanaged flag form the whole tree. The flag could be
# put there manually. If we didn't do it, the resource may stay unmanaged,
# as a managed primitive in an unmanaged clone / group is still unmanaged
# and vice versa.
# Bundle resources cannot be set as unmanaged - pcmk currently doesn't
# support that. Resources in a bundle are supposed to be treated separately.
if is_bundle(resource_el):
return []
res_id = resource_el.attrib["id"]
return (
[resource_el] # the resource itself
+
# its parents
find_parent(resource_el, "resources").xpath(
"""
(./master|./clone)[(group|group/primitive|primitive)[@id='{r}']]
|
//group[primitive[@id='{r}']]
"""
.format(r=res_id)
)
+
# its children
resource_el.xpath("(./group|./primitive|./group/primitive)")
)
def expand_tag(
some_or_tag_el: _Element, only_expand_types: Iterable[str] = None
) -> List[_Element]:
"""
Substitute a tag element with elements which the tag refers to.
some_or_tag_el -- an already expanded element or a tag element to expand
only_expand_types -- if specified, return only elements of these types
"""
if some_or_tag_el.tag != TAG_TAG:
return [some_or_tag_el]
conf_section = find_parent(some_or_tag_el, "configuration")
if conf_section is None:
return []
expanded_elements = []
for element_id in [
str(obj_ref.get("id", ""))
for obj_ref in some_or_tag_el.iterfind(TAG_OBJREF)
]:
if only_expand_types:
searcher = ElementSearcher(
only_expand_types, element_id, conf_section
)
if searcher.element_found():
expanded_elements.append(searcher.get_element())
else:
expanded_elements.extend(
get_configuration_elements_by_id(conf_section, element_id)
)
return expanded_elements
def is_resource_managed(cluster_state, resource_id):
"""
Check if the resource is managed
etree cluster_state -- status of the cluster
string resource_id -- id of the resource
"""
primitive_list = cluster_state.xpath("""
.//resource[{predicate_id}]
|
.//group[{predicate_id}]/resource
""".format(predicate_id=_id_xpath_predicate(resource_id)))
if primitive_list:
for primitive in primitive_list:
if is_false(primitive.attrib.get("managed", "")):
return False
clone = find_parent(primitive, ["clone"])
if clone is not None and is_false(clone.attrib.get("managed", "")):
return False
return True
clone_list = cluster_state.xpath(
""".//clone[@id="{0}"]""".format(resource_id))
for clone in clone_list:
if is_false(clone.attrib.get("managed", "")):
return False
for primitive in clone.xpath(".//resource"):
if is_false(primitive.attrib.get("managed", "")):
return False
return True
raise ResourceNotFound(resource_id)
def find_valid_resource_id(report_processor: ReportProcessor, cib,
in_clone_allowed, _id):
parent_tags = resource.clone.ALL_TAGS + [resource.bundle.TAG]
resource_element = find_element_by_tag_and_id(
sorted(parent_tags + [resource.primitive.TAG, resource.group.TAG]),
cib,
_id,
)
if resource_element.tag in parent_tags:
return resource_element.attrib["id"]
clone = find_parent(resource_element, parent_tags)
if clone is None:
return resource_element.attrib["id"]
report_msg = reports.messages.ResourceForConstraintIsMultiinstance(
resource_element.attrib["id"],
"clone" if clone.tag == "master" else clone.tag,
clone.attrib["id"],
)
if in_clone_allowed:
if report_processor.report(ReportItem.warning(report_msg)).has_errors:
raise LibraryError()
return resource_element.attrib["id"]
raise LibraryError(
ReportItem.error(
report_msg,
force_code=reports.codes.FORCE,
))
def find_resources_to_manage(resource_el):
"""
Get resources to manage to manage the specified resource succesfully
etree resource_el -- resource element
"""
# If the resource_el is a primitive in a group, we set both the group and
# the primitive to managed mode. Otherwise the resource_el, all its
# children and parents need to be set to managed mode. We do it to make
# sure to remove the unmanaged flag form the whole tree. The flag could be
# put there manually. If we didn't do it, the resource may stay unmanaged,
# as a managed primitive in an unmanaged clone / group is still unmanaged
# and vice versa.
res_id = resource_el.attrib["id"]
return (
[resource_el] # the resource itself
+
# its parents
find_parent(resource_el, "resources").xpath(
# a master or a clone which contains a group, a primitve, or a
# grouped primitive with the specified id
# OR
# a group (in a clone, master, etc. - hence //) which contains a
# primitive with the specified id
# OR
# a bundle which contains a primitive with the specified id
"""
(./master|./clone)[(group|group/primitive|primitive)[@id='{r}']]
|
//group[primitive[@id='{r}']]
|
./bundle[primitive[@id='{r}']]
""".format(r=res_id)) +
# its children
resource_el.xpath("(./group|./primitive|./group/primitive)"))
def find_valid_resource_id(report_processor, cib, in_clone_allowed, id):
parent_tags = resource.clone.ALL_TAGS + [resource.bundle.TAG]
resource_element = find_element_by_tag_and_id(
parent_tags + [resource.primitive.TAG, resource.group.TAG],
cib,
id,
)
if resource_element.tag in parent_tags:
return resource_element.attrib["id"]
clone = find_parent(resource_element, parent_tags)
if clone is None:
return resource_element.attrib["id"]
if in_clone_allowed:
report_processor.process(
reports.resource_for_constraint_is_multiinstance(
resource_element.attrib["id"],
"clone" if clone.tag == "master" else clone.tag,
clone.attrib["id"],
ReportItemSeverity.WARNING,
))
return resource_element.attrib["id"]
raise LibraryError(
reports.resource_for_constraint_is_multiinstance(
resource_element.attrib["id"],
"clone" if clone.tag == "master" else clone.tag,
clone.attrib["id"],
ReportItemSeverity.ERROR,
#repair to clone is workaround for web ui, so we put only information
#about one forceable possibility
forceable=report_codes.FORCE_CONSTRAINT_MULTIINSTANCE_RESOURCE))
def find_valid_resource_id(report_processor, cib, in_clone_allowed, _id):
parent_tags = resource.clone.ALL_TAGS + [resource.bundle.TAG]
resource_element = find_element_by_tag_and_id(
parent_tags + [resource.primitive.TAG, resource.group.TAG],
cib,
_id,
)
if resource_element.tag in parent_tags:
return resource_element.attrib["id"]
clone = find_parent(resource_element, parent_tags)
if clone is None:
return resource_element.attrib["id"]
if in_clone_allowed:
report_processor.process(
reports.resource_for_constraint_is_multiinstance(
resource_element.attrib["id"],
"clone" if clone.tag == "master" else clone.tag,
clone.attrib["id"],
ReportItemSeverity.WARNING,
)
)
return resource_element.attrib["id"]
raise LibraryError(reports.resource_for_constraint_is_multiinstance(
resource_element.attrib["id"],
"clone" if clone.tag == "master" else clone.tag,
clone.attrib["id"],
ReportItemSeverity.ERROR,
#repair to clone is workaround for web ui, so we put only information
#about one forceable possibility
forceable=report_codes.FORCE_CONSTRAINT_MULTIINSTANCE_RESOURCE
))
def find_valid_resource_id(report_processor: ReportProcessor, cib,
in_clone_allowed, _id):
parent_tags = resource.clone.ALL_TAGS + [resource.bundle.TAG]
resource_element = find_element_by_tag_and_id(
sorted(parent_tags + [resource.primitive.TAG, resource.group.TAG]),
cib,
_id,
)
if resource_element.tag in parent_tags:
return resource_element.attrib["id"]
clone = find_parent(resource_element, parent_tags)
if clone is None:
return resource_element.attrib["id"]
report_msg = reports.messages.ResourceForConstraintIsMultiinstance(
resource_element.attrib["id"],
"clone" if clone.tag == "master" else clone.tag,
clone.attrib["id"],
)
if in_clone_allowed:
if report_processor.report(ReportItem.warning(report_msg)).has_errors:
raise LibraryError()
return resource_element.attrib["id"]
raise LibraryError(
ReportItem.error(
report_msg,
# repair to clone is workaround for web ui, so we put only
# information about one forceable possibility
force_code=reports.codes.FORCE_CONSTRAINT_MULTIINSTANCE_RESOURCE,
))
def remove_obj_ref(obj_ref_list: Iterable[_Element]) -> None:
"""
Remove specified obj_ref elements and also their parents if they remain
empty after obj_ref removal.
obj_ref_list -- list of obj_ref elements
"""
tag_elements = {find_parent(obj_ref, [TAG_TAG]) for obj_ref in obj_ref_list}
for obj_ref in obj_ref_list:
remove_one_element(obj_ref)
for tag in tag_elements:
if len(tag.findall(TAG_OBJREF)) == 0:
remove_one_element(tag)
def is_resource_managed(cluster_state, resource_id):
"""
Check if the resource is managed
etree cluster_state -- status of the cluster
string resource_id -- id of the resource
"""
primitive_list = cluster_state.xpath(
"""
.//resource[{predicate_id}]
|
.//group[{predicate_id}]/resource
""".format(predicate_id=_id_xpath_predicate),
id=resource_id,
)
if primitive_list:
for primitive in primitive_list:
if is_false(primitive.attrib.get("managed", "")):
return False
parent = find_parent(primitive, ["clone", "bundle"])
if parent is not None and is_false(parent.attrib.get(
"managed", "")):
return False
return True
parent_list = cluster_state.xpath(
"""
.//clone[@id=$resource_id]
|
.//bundle[@id=$resource_id]
""",
resource_id=resource_id,
)
for parent in parent_list:
if is_false(parent.attrib.get("managed", "")):
return False
for primitive in parent.xpath(".//resource"):
if is_false(primitive.attrib.get("managed", "")):
return False
return True
raise ResourceNotFound(resource_id)
def is_resource_managed(cluster_state, resource_id):
"""
Check if the resource is managed
etree cluster_state -- status of the cluster
string resource_id -- id of the resource
"""
primitive_list = cluster_state.xpath("""
.//resource[{predicate_id}]
|
.//group[{predicate_id}]/resource
""".format(predicate_id=_id_xpath_predicate(resource_id))
)
if primitive_list:
for primitive in primitive_list:
if is_false(primitive.attrib.get("managed", "")):
return False
parent = find_parent(primitive, ["clone", "bundle"])
if (
parent is not None
and
is_false(parent.attrib.get("managed", ""))
):
return False
return True
parent_list = cluster_state.xpath("""
.//clone[@id="{0}"]
|
.//bundle[@id="{0}"]
""".format(resource_id)
)
for parent in parent_list:
if is_false(parent.attrib.get("managed", "")):
return False
for primitive in parent.xpath(".//resource"):
if is_false(primitive.attrib.get("managed", "")):
return False
return True
raise ResourceNotFound(resource_id)
