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Diffstat (limited to 'pkg/test/dockerutil/dockerutil.go')
-rw-r--r--pkg/test/dockerutil/dockerutil.go172
1 files changed, 0 insertions, 172 deletions
diff --git a/pkg/test/dockerutil/dockerutil.go b/pkg/test/dockerutil/dockerutil.go
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--- a/pkg/test/dockerutil/dockerutil.go
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-// 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 dockerutil is a collection of utility functions.
-package dockerutil
-
-import (
- "encoding/json"
- "flag"
- "fmt"
- "io"
- "io/ioutil"
- "log"
- "os/exec"
- "regexp"
- "strconv"
- "time"
-
- "gvisor.dev/gvisor/pkg/test/testutil"
-)
-
-var (
- // runtime is the runtime to use for tests. This will be applied to all
- // containers. Note that the default here ("runsc") corresponds to the
- // default used by the installations. This is important, because the
- // default installer for vm_tests (in tools/installers:head, invoked
- // via tools/vm:defs.bzl) will install with this name. So without
- // changing anything, tests should have a runsc runtime available to
- // them. Otherwise installers should update the existing runtime
- // instead of installing a new one.
- runtime = flag.String("runtime", "runsc", "specify which runtime to use")
-
- // config is the default Docker daemon configuration path.
- config = flag.String("config_path", "/etc/docker/daemon.json", "configuration file for reading paths")
-
- // The following flags are for the "pprof" profiler tool.
-
- // pprofBaseDir allows the user to change the directory to which profiles are
- // written. By default, profiles will appear under:
- // /tmp/profile/RUNTIME/CONTAINER_NAME/*.pprof.
- pprofBaseDir = flag.String("pprof-dir", "/tmp/profile", "base directory in: BASEDIR/RUNTIME/CONTINER_NAME/FILENAME (e.g. /tmp/profile/runtime/mycontainer/cpu.pprof)")
- pprofDuration = flag.Duration("pprof-duration", time.Hour, "profiling duration (automatically stopped at container exit)")
-
- // The below flags enable each type of profile. Multiple profiles can be
- // enabled for each run. The profile will be collected from the start.
- pprofBlock = flag.Bool("pprof-block", false, "enables block profiling with runsc debug")
- pprofCPU = flag.Bool("pprof-cpu", false, "enables CPU profiling with runsc debug")
- pprofHeap = flag.Bool("pprof-heap", false, "enables heap profiling with runsc debug")
- pprofMutex = flag.Bool("pprof-mutex", false, "enables mutex profiling with runsc debug")
-)
-
-// EnsureSupportedDockerVersion checks if correct docker is installed.
-//
-// This logs directly to stderr, as it is typically called from a Main wrapper.
-func EnsureSupportedDockerVersion() {
- cmd := exec.Command("docker", "version")
- out, err := cmd.CombinedOutput()
- if err != nil {
- log.Fatalf("error running %q: %v", "docker version", err)
- }
- re := regexp.MustCompile(`Version:\s+(\d+)\.(\d+)\.\d.*`)
- matches := re.FindStringSubmatch(string(out))
- if len(matches) != 3 {
- log.Fatalf("Invalid docker output: %s", out)
- }
- major, _ := strconv.Atoi(matches[1])
- minor, _ := strconv.Atoi(matches[2])
- if major < 17 || (major == 17 && minor < 9) {
- log.Fatalf("Docker version 17.09.0 or greater is required, found: %02d.%02d", major, minor)
- }
-}
-
-// RuntimePath returns the binary path for the current runtime.
-func RuntimePath() (string, error) {
- rs, err := runtimeMap()
- if err != nil {
- return "", err
- }
-
- p, ok := rs["path"].(string)
- if !ok {
- // The runtime does not declare a path.
- return "", fmt.Errorf("runtime does not declare a path: %v", rs)
- }
- return p, nil
-}
-
-// UsingVFS2 returns true if the 'runtime' has the vfs2 flag set.
-// TODO(gvisor.dev/issue/1624): Remove.
-func UsingVFS2() (bool, error) {
- rMap, err := runtimeMap()
- if err != nil {
- return false, err
- }
-
- list, ok := rMap["runtimeArgs"].([]interface{})
- if !ok {
- return false, fmt.Errorf("unexpected format: %v", rMap)
- }
-
- for _, element := range list {
- if element == "--vfs2" {
- return true, nil
- }
- }
- return false, nil
-}
-
-func runtimeMap() (map[string]interface{}, error) {
- // Read the configuration data; the file must exist.
- configBytes, err := ioutil.ReadFile(*config)
- if err != nil {
- return nil, err
- }
-
- // Unmarshal the configuration.
- c := make(map[string]interface{})
- if err := json.Unmarshal(configBytes, &c); err != nil {
- return nil, err
- }
-
- // Decode the expected configuration.
- r, ok := c["runtimes"]
- if !ok {
- return nil, fmt.Errorf("no runtimes declared: %v", c)
- }
- rs, ok := r.(map[string]interface{})
- if !ok {
- // The runtimes are not a map.
- return nil, fmt.Errorf("unexpected format: %v", rs)
- }
- r, ok = rs[*runtime]
- if !ok {
- // The expected runtime is not declared.
- return nil, fmt.Errorf("runtime %q not found: %v", *runtime, rs)
- }
- rs, ok = r.(map[string]interface{})
- if !ok {
- // The runtime is not a map.
- return nil, fmt.Errorf("unexpected format: %v", r)
- }
- return rs, nil
-}
-
-// Save exports a container image to the given Writer.
-//
-// Note that the writer should be actively consuming the output, otherwise it
-// is not guaranteed that the Save will make any progress and the call may
-// stall indefinitely.
-//
-// This is called by criutil in order to import imports.
-func Save(logger testutil.Logger, image string, w io.Writer) error {
- cmd := testutil.Command(logger, "docker", "save", testutil.ImageByName(image))
- cmd.Stdout = w // Send directly to the writer.
- return cmd.Run()
-}
-
-// Runtime returns the value of the flag runtime.
-func Runtime() string {
- return *runtime
-}