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## This Source Code Form is subject to the terms of the Mozilla Public
## License, v. 2.0. If a copy of the MPL was not distributed with this
## file, You can obtain one at https://mozilla.org/MPL/2.0/.
##
## Copyright (c) 2007-2020 VMware, Inc. or its affiliates. All rights reserved.
defmodule RabbitMQ.CLI.Core.Alarms do
def alarm_lines(alarms, node_name) do
Enum.reduce(alarms, [], fn
:file_descriptor_limit, acc ->
["File descriptor limit alarm on node #{node_name}" | acc]
{{:resource_limit, :memory, alarmed_node_name}, _}, acc ->
["Memory alarm on node #{alarmed_node_name}" | acc]
{:resource_limit, :memory, alarmed_node_name}, acc ->
["Memory alarm on node #{alarmed_node_name}" | acc]
{{:resource_limit, :disk, alarmed_node_name}, _}, acc ->
["Free disk space alarm on node #{alarmed_node_name}" | acc]
{:resource_limit, :disk, alarmed_node_name}, acc ->
["Free disk space alarm on node #{alarmed_node_name}" | acc]
end)
|> Enum.reverse()
end
def local_alarms(alarms, node_name) do
Enum.filter(
alarms,
fn
# local by definition
:file_descriptor_limit ->
true
{{:resource_limit, _, a_node}, _} ->
node_name == a_node
end
)
end
def clusterwide_alarms(alarms, node_name) do
alarms
|> Enum.reject(fn x -> x == :file_descriptor_limit end)
|> Enum.filter(fn {{:resource_limit, _, a_node}, _} ->
a_node != node_name
end)
end
def alarm_types(xs) do
Enum.map(xs, &alarm_type/1)
end
def alarm_type(val) when is_atom(val) do
val
end
def alarm_type({:resource_limit, val, _node}) do
val
end
def alarm_type({{:resource_limit, val, _node}, []}) do
val
end
def alarm_maps(xs) do
Enum.map(xs, &alarm_map/1)
end
def alarm_map(:file_descriptor_limit) do
%{
type: :resource_limit,
resource: :file_descriptors,
node: node()
}
end
def alarm_map({{:resource_limit, resource, node}, _}) do
%{
type: :resource_limit,
resource: resource,
node: node
}
end
def alarm_map({:resource_limit, resource, node}) do
%{
type: :resource_limit,
resource: resource,
node: node
}
end
end
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