diff options
Diffstat (limited to 'pkg/test/criutil')
| -rw-r--r-- | pkg/test/criutil/BUILD | 14 | ||||
| -rw-r--r-- | pkg/test/criutil/criutil.go | 317 |
2 files changed, 0 insertions, 331 deletions
diff --git a/pkg/test/criutil/BUILD b/pkg/test/criutil/BUILD deleted file mode 100644 index a7b082cee..000000000 --- a/pkg/test/criutil/BUILD +++ /dev/null @@ -1,14 +0,0 @@ -load("//tools:defs.bzl", "go_library") - -package(licenses = ["notice"]) - -go_library( - name = "criutil", - testonly = 1, - srcs = ["criutil.go"], - visibility = ["//:sandbox"], - deps = [ - "//pkg/test/dockerutil", - "//pkg/test/testutil", - ], -) diff --git a/pkg/test/criutil/criutil.go b/pkg/test/criutil/criutil.go deleted file mode 100644 index 8fed29ff5..000000000 --- a/pkg/test/criutil/criutil.go +++ /dev/null @@ -1,317 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -// Package criutil contains utility functions for interacting with the -// Container Runtime Interface (CRI), principally via the crictl command line -// tool. This requires critools to be installed on the local system. -package criutil - -import ( - "encoding/json" - "fmt" - "os" - "os/exec" - "strings" - "time" - - "gvisor.dev/gvisor/pkg/test/dockerutil" - "gvisor.dev/gvisor/pkg/test/testutil" -) - -// Crictl contains information required to run the crictl utility. -type Crictl struct { - logger testutil.Logger - endpoint string - cleanup []func() -} - -// resolvePath attempts to find binary paths. It may set the path to invalid, -// which will cause the execution to fail with a sensible error. -func resolvePath(executable string) string { - guess, err := exec.LookPath(executable) - if err != nil { - guess = fmt.Sprintf("/usr/local/bin/%s", executable) - } - return guess -} - -// NewCrictl returns a Crictl configured with a timeout and an endpoint over -// which it will talk to containerd. -func NewCrictl(logger testutil.Logger, endpoint string) *Crictl { - // Attempt to find the executable, but don't bother propagating the - // error at this point. The first command executed will return with a - // binary not found error. - return &Crictl{ - logger: logger, - endpoint: endpoint, - } -} - -// CleanUp executes cleanup functions. -func (cc *Crictl) CleanUp() { - for _, c := range cc.cleanup { - c() - } - cc.cleanup = nil -} - -// RunPod creates a sandbox. It corresponds to `crictl runp`. -func (cc *Crictl) RunPod(sbSpecFile string) (string, error) { - podID, err := cc.run("runp", sbSpecFile) - if err != nil { - return "", fmt.Errorf("runp failed: %v", err) - } - // Strip the trailing newline from crictl output. - return strings.TrimSpace(podID), nil -} - -// Create creates a container within a sandbox. It corresponds to `crictl -// create`. -func (cc *Crictl) Create(podID, contSpecFile, sbSpecFile string) (string, error) { - podID, err := cc.run("create", podID, contSpecFile, sbSpecFile) - if err != nil { - return "", fmt.Errorf("create failed: %v", err) - } - // Strip the trailing newline from crictl output. - return strings.TrimSpace(podID), nil -} - -// Start starts a container. It corresponds to `crictl start`. -func (cc *Crictl) Start(contID string) (string, error) { - output, err := cc.run("start", contID) - if err != nil { - return "", fmt.Errorf("start failed: %v", err) - } - return output, nil -} - -// Stop stops a container. It corresponds to `crictl stop`. -func (cc *Crictl) Stop(contID string) error { - _, err := cc.run("stop", contID) - return err -} - -// Exec execs a program inside a container. It corresponds to `crictl exec`. -func (cc *Crictl) Exec(contID string, args ...string) (string, error) { - a := []string{"exec", contID} - a = append(a, args...) - output, err := cc.run(a...) - if err != nil { - return "", fmt.Errorf("exec failed: %v", err) - } - return output, nil -} - -// Logs retrieves the container logs. It corresponds to `crictl logs`. -func (cc *Crictl) Logs(contID string, args ...string) (string, error) { - a := []string{"logs", contID} - a = append(a, args...) - output, err := cc.run(a...) - if err != nil { - return "", fmt.Errorf("logs failed: %v", err) - } - return output, nil -} - -// Rm removes a container. It corresponds to `crictl rm`. -func (cc *Crictl) Rm(contID string) error { - _, err := cc.run("rm", contID) - return err -} - -// StopPod stops a pod. It corresponds to `crictl stopp`. -func (cc *Crictl) StopPod(podID string) error { - _, err := cc.run("stopp", podID) - return err -} - -// containsConfig is a minimal copy of -// https://github.com/kubernetes/kubernetes/blob/master/pkg/kubelet/apis/cri/runtime/v1alpha2/api.proto -// It only contains fields needed for testing. -type containerConfig struct { - Status containerStatus -} - -type containerStatus struct { - Network containerNetwork -} - -type containerNetwork struct { - IP string -} - -// PodIP returns a pod's IP address. -func (cc *Crictl) PodIP(podID string) (string, error) { - output, err := cc.run("inspectp", podID) - if err != nil { - return "", err - } - conf := &containerConfig{} - if err := json.Unmarshal([]byte(output), conf); err != nil { - return "", fmt.Errorf("failed to unmarshal JSON: %v, %s", err, output) - } - if conf.Status.Network.IP == "" { - return "", fmt.Errorf("no IP found in config: %s", output) - } - return conf.Status.Network.IP, nil -} - -// RmPod removes a container. It corresponds to `crictl rmp`. -func (cc *Crictl) RmPod(podID string) error { - _, err := cc.run("rmp", podID) - return err -} - -// Import imports the given container from the local Docker instance. -func (cc *Crictl) Import(image string) error { - // Note that we provide a 10 minute timeout after connect because we may - // be pushing a lot of bytes in order to import the image. The connect - // timeout stays the same and is inherited from the Crictl instance. - cmd := testutil.Command(cc.logger, - resolvePath("ctr"), - fmt.Sprintf("--connect-timeout=%s", 30*time.Second), - fmt.Sprintf("--address=%s", cc.endpoint), - "-n", "k8s.io", "images", "import", "-") - cmd.Stderr = os.Stderr // Pass through errors. - - // Create a pipe and start the program. - w, err := cmd.StdinPipe() - if err != nil { - return err - } - if err := cmd.Start(); err != nil { - return err - } - - // Save the image on the other end. - if err := dockerutil.Save(cc.logger, image, w); err != nil { - cmd.Wait() - return err - } - - // Close our pipe reference & see if it was loaded. - if err := w.Close(); err != nil { - return w.Close() - } - - return cmd.Wait() -} - -// StartContainer pulls the given image ands starts the container in the -// sandbox with the given podID. -// -// Note that the image will always be imported from the local docker daemon. -func (cc *Crictl) StartContainer(podID, image, sbSpec, contSpec string) (string, error) { - if err := cc.Import(image); err != nil { - return "", err - } - - // Write the specs to files that can be read by crictl. - sbSpecFile, cleanup, err := testutil.WriteTmpFile("sbSpec", sbSpec) - if err != nil { - return "", fmt.Errorf("failed to write sandbox spec: %v", err) - } - cc.cleanup = append(cc.cleanup, cleanup) - contSpecFile, cleanup, err := testutil.WriteTmpFile("contSpec", contSpec) - if err != nil { - return "", fmt.Errorf("failed to write container spec: %v", err) - } - cc.cleanup = append(cc.cleanup, cleanup) - - return cc.startContainer(podID, image, sbSpecFile, contSpecFile) -} - -func (cc *Crictl) startContainer(podID, image, sbSpecFile, contSpecFile string) (string, error) { - contID, err := cc.Create(podID, contSpecFile, sbSpecFile) - if err != nil { - return "", fmt.Errorf("failed to create container in pod %q: %v", podID, err) - } - - if _, err := cc.Start(contID); err != nil { - return "", fmt.Errorf("failed to start container %q in pod %q: %v", contID, podID, err) - } - - return contID, nil -} - -// StopContainer stops and deletes the container with the given container ID. -func (cc *Crictl) StopContainer(contID string) error { - if err := cc.Stop(contID); err != nil { - return fmt.Errorf("failed to stop container %q: %v", contID, err) - } - - if err := cc.Rm(contID); err != nil { - return fmt.Errorf("failed to remove container %q: %v", contID, err) - } - - return nil -} - -// StartPodAndContainer starts a sandbox and container in that sandbox. It -// returns the pod ID and container ID. -func (cc *Crictl) StartPodAndContainer(image, sbSpec, contSpec string) (string, string, error) { - if err := cc.Import(image); err != nil { - return "", "", err - } - - // Write the specs to files that can be read by crictl. - sbSpecFile, cleanup, err := testutil.WriteTmpFile("sbSpec", sbSpec) - if err != nil { - return "", "", fmt.Errorf("failed to write sandbox spec: %v", err) - } - cc.cleanup = append(cc.cleanup, cleanup) - contSpecFile, cleanup, err := testutil.WriteTmpFile("contSpec", contSpec) - if err != nil { - return "", "", fmt.Errorf("failed to write container spec: %v", err) - } - cc.cleanup = append(cc.cleanup, cleanup) - - podID, err := cc.RunPod(sbSpecFile) - if err != nil { - return "", "", err - } - - contID, err := cc.startContainer(podID, image, sbSpecFile, contSpecFile) - - return podID, contID, err -} - -// StopPodAndContainer stops a container and pod. -func (cc *Crictl) StopPodAndContainer(podID, contID string) error { - if err := cc.StopContainer(contID); err != nil { - return fmt.Errorf("failed to stop container %q in pod %q: %v", contID, podID, err) - } - - if err := cc.StopPod(podID); err != nil { - return fmt.Errorf("failed to stop pod %q: %v", podID, err) - } - - if err := cc.RmPod(podID); err != nil { - return fmt.Errorf("failed to remove pod %q: %v", podID, err) - } - - return nil -} - -// run runs crictl with the given args. -func (cc *Crictl) run(args ...string) (string, error) { - defaultArgs := []string{ - resolvePath("crictl"), - "--image-endpoint", fmt.Sprintf("unix://%s", cc.endpoint), - "--runtime-endpoint", fmt.Sprintf("unix://%s", cc.endpoint), - } - fullArgs := append(defaultArgs, args...) - out, err := testutil.Command(cc.logger, fullArgs...).CombinedOutput() - return string(out), err -} |