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|
# frozen_string_literal: true
require_relative '../../../../tooling/lib/tooling/kubernetes_client'
RSpec.describe Tooling::KubernetesClient do
let(:namespace) { 'review-apps' }
let(:release_name) { 'my-release' }
let(:pod_for_release) { "pod-my-release-abcd" }
let(:raw_resource_names_str) { "NAME\nfoo\n#{pod_for_release}\nbar" }
let(:raw_resource_names) { raw_resource_names_str.lines.map(&:strip) }
subject { described_class.new(namespace: namespace) }
describe 'RESOURCE_LIST' do
it 'returns the correct list of resources separated by commas' do
expect(described_class::RESOURCE_LIST).to eq('ingress,svc,pdb,hpa,deploy,statefulset,job,pod,secret,configmap,pvc,secret,clusterrole,clusterrolebinding,role,rolebinding,sa,crd')
end
end
describe '#cleanup_by_release' do
before do
allow(subject).to receive(:raw_resource_names).and_return(raw_resource_names)
end
shared_examples 'a kubectl command to delete resources' do
let(:wait) { true }
let(:release_names_in_command) { release_name.respond_to?(:join) ? %(-l 'release in (#{release_name.join(', ')})') : %(-l release="#{release_name}") }
specify do
expect(Gitlab::Popen).to receive(:popen_with_detail)
.with(["kubectl delete #{described_class::RESOURCE_LIST} " +
%(--namespace "#{namespace}" --now --ignore-not-found --wait=#{wait} #{release_names_in_command})])
.and_return(Gitlab::Popen::Result.new([], '', '', double(success?: true)))
expect(Gitlab::Popen).to receive(:popen_with_detail)
.with([%(kubectl delete --namespace "#{namespace}" --ignore-not-found #{pod_for_release})])
.and_return(Gitlab::Popen::Result.new([], '', '', double(success?: true)))
# We're not verifying the output here, just silencing it
expect { subject.cleanup_by_release(release_name: release_name) }.to output.to_stdout
end
end
it 'raises an error if the Kubernetes command fails' do
expect(Gitlab::Popen).to receive(:popen_with_detail)
.with(["kubectl delete #{described_class::RESOURCE_LIST} " +
%(--namespace "#{namespace}" --now --ignore-not-found --wait=true -l release="#{release_name}")])
.and_return(Gitlab::Popen::Result.new([], '', '', double(success?: false)))
expect { subject.cleanup_by_release(release_name: release_name) }.to raise_error(described_class::CommandFailedError)
end
it_behaves_like 'a kubectl command to delete resources'
context 'with multiple releases' do
let(:release_name) { %w[my-release my-release-2] }
it_behaves_like 'a kubectl command to delete resources'
end
context 'with `wait: false`' do
let(:wait) { false }
it_behaves_like 'a kubectl command to delete resources'
end
end
describe '#cleanup_by_created_at' do
let(:two_days_ago) { Time.now - 3600 * 24 * 2 }
let(:resource_type) { 'pvc' }
let(:resource_names) { [pod_for_release] }
before do
allow(subject).to receive(:resource_names_created_before).with(resource_type: resource_type, created_before: two_days_ago).and_return(resource_names)
end
shared_examples 'a kubectl command to delete resources by older than given creation time' do
let(:wait) { true }
let(:release_names_in_command) { resource_names.join(' ') }
specify do
expect(Gitlab::Popen).to receive(:popen_with_detail)
.with(["kubectl delete #{resource_type} ".squeeze(' ') +
%(--namespace "#{namespace}" --now --ignore-not-found --wait=#{wait} #{release_names_in_command})])
.and_return(Gitlab::Popen::Result.new([], '', '', double(success?: true)))
# We're not verifying the output here, just silencing it
expect { subject.cleanup_by_created_at(resource_type: resource_type, created_before: two_days_ago) }.to output.to_stdout
end
end
it 'raises an error if the Kubernetes command fails' do
expect(Gitlab::Popen).to receive(:popen_with_detail)
.with(["kubectl delete #{resource_type} " +
%(--namespace "#{namespace}" --now --ignore-not-found --wait=true #{pod_for_release})])
.and_return(Gitlab::Popen::Result.new([], '', '', double(success?: false)))
expect { subject.cleanup_by_created_at(resource_type: resource_type, created_before: two_days_ago) }.to raise_error(described_class::CommandFailedError)
end
it_behaves_like 'a kubectl command to delete resources by older than given creation time'
context 'with multiple resource names' do
let(:resource_names) { %w[pod-1 pod-2] }
it_behaves_like 'a kubectl command to delete resources by older than given creation time'
end
context 'with `wait: false`' do
let(:wait) { false }
it_behaves_like 'a kubectl command to delete resources by older than given creation time'
end
context 'with no resource_type given' do
let(:resource_type) { nil }
it_behaves_like 'a kubectl command to delete resources by older than given creation time'
end
context 'with multiple resource_type given' do
let(:resource_type) { 'pvc,service' }
it_behaves_like 'a kubectl command to delete resources by older than given creation time'
end
end
describe '#raw_resource_names' do
it 'calls kubectl to retrieve the resource names' do
expect(Gitlab::Popen).to receive(:popen_with_detail)
.with(["kubectl get #{described_class::RESOURCE_LIST} " +
%(--namespace "#{namespace}" -o name)])
.and_return(Gitlab::Popen::Result.new([], raw_resource_names_str, '', double(success?: true)))
expect(subject.__send__(:raw_resource_names)).to eq(raw_resource_names)
end
end
describe '#resource_names_created_before' do
let(:three_days_ago) { Time.now - 3600 * 24 * 3 }
let(:two_days_ago) { Time.now - 3600 * 24 * 2 }
let(:pvc_created_three_days_ago) { 'pvc-created-three-days-ago' }
let(:resource_type) { 'pvc' }
let(:raw_resources) do
{
items: [
{
apiVersion: "v1",
kind: "PersistentVolumeClaim",
metadata: {
creationTimestamp: three_days_ago,
name: pvc_created_three_days_ago
}
},
{
apiVersion: "v1",
kind: "PersistentVolumeClaim",
metadata: {
creationTimestamp: Time.now,
name: 'another-pvc'
}
}
]
}.to_json
end
shared_examples 'a kubectl command to retrieve resource names sorted by creationTimestamp' do
specify do
expect(Gitlab::Popen).to receive(:popen_with_detail)
.with(["kubectl get #{resource_type} ".squeeze(' ') +
%(--namespace "#{namespace}" ) +
"--sort-by='{.metadata.creationTimestamp}' -o json"])
.and_return(Gitlab::Popen::Result.new([], raw_resources, '', double(success?: true)))
expect(subject.__send__(:resource_names_created_before, resource_type: resource_type, created_before: two_days_ago)).to contain_exactly(pvc_created_three_days_ago)
end
end
it_behaves_like 'a kubectl command to retrieve resource names sorted by creationTimestamp'
context 'with no resource_type given' do
let(:resource_type) { nil }
it_behaves_like 'a kubectl command to retrieve resource names sorted by creationTimestamp'
end
context 'with multiple resource_type given' do
let(:resource_type) { 'pvc,service' }
it_behaves_like 'a kubectl command to retrieve resource names sorted by creationTimestamp'
end
end
end
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