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25697a62c4
This is a v3 port of #6612. There have been significant changes due to the way Helm 3 refactored things. I chose to add the method for getting logs to the testing client because it seemed like something that someone using Helm as an SDK might want. It takes a writer because it is more efficient (less copying) and can write to any sort of buffer desired Signed-off-by: Taylor Thomas <taylor.thomas@microsoft.com>
99 lines
2.6 KiB
Go
99 lines
2.6 KiB
Go
/*
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Copyright The Helm Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package action
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import (
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"fmt"
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"io"
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"time"
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"github.com/pkg/errors"
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v1 "k8s.io/api/core/v1"
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"helm.sh/helm/v3/pkg/release"
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)
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// ReleaseTesting is the action for testing a release.
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//
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// It provides the implementation of 'helm test'.
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type ReleaseTesting struct {
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cfg *Configuration
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Timeout time.Duration
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// Used for fetching logs from test pods
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Namespace string
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}
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// NewReleaseTesting creates a new ReleaseTesting object with the given configuration.
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func NewReleaseTesting(cfg *Configuration) *ReleaseTesting {
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return &ReleaseTesting{
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cfg: cfg,
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}
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}
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// Run executes 'helm test' against the given release.
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func (r *ReleaseTesting) Run(name string) (*release.Release, error) {
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if err := r.cfg.KubeClient.IsReachable(); err != nil {
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return nil, err
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}
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if err := validateReleaseName(name); err != nil {
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return nil, errors.Errorf("releaseTest: Release name is invalid: %s", name)
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}
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// finds the non-deleted release with the given name
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rel, err := r.cfg.Releases.Last(name)
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if err != nil {
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return rel, err
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}
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if err := r.cfg.execHook(rel, release.HookTest, r.Timeout); err != nil {
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r.cfg.Releases.Update(rel)
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return rel, err
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}
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return rel, r.cfg.Releases.Update(rel)
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}
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// GetPodLogs will write the logs for all test pods in the given release into
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// the given writer. These can be immediately output to the user or captured for
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// other uses
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func (r *ReleaseTesting) GetPodLogs(out io.Writer, rel *release.Release) error {
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client, err := r.cfg.KubernetesClientSet()
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if err != nil {
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return errors.Wrap(err, "unable to get kubernetes client to fetch pod logs")
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}
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for _, h := range rel.Hooks {
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for _, e := range h.Events {
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if e == release.HookTest {
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req := client.CoreV1().Pods(r.Namespace).GetLogs(h.Name, &v1.PodLogOptions{})
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logReader, err := req.Stream()
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if err != nil {
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return errors.Wrapf(err, "unable to get pod logs for %s", h.Name)
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}
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fmt.Fprintf(out, "POD LOGS: %s\n", h.Name)
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_, err = io.Copy(out, logReader)
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fmt.Fprintln(out)
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if err != nil {
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return errors.Wrapf(err, "unable to write pod logs for %s", h.Name)
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}
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}
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}
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}
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return nil
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}
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