2016-12-25 19:28:38 +00:00
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package environment
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import (
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"fmt"
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"io/ioutil"
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"os"
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"path/filepath"
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"strconv"
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"strings"
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"github.com/docker/docker/api/types"
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"github.com/docker/docker/api/types/container"
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"github.com/docker/docker/client"
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2017-01-13 16:23:28 +00:00
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"golang.org/x/net/context"
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2016-12-25 19:28:38 +00:00
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)
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// Execution holds informations about the test execution environment.
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type Execution struct {
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daemonPlatform string
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localDaemon bool
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experimentalDaemon bool
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daemonStorageDriver string
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isolation container.Isolation
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daemonPid int
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daemonKernelVersion string
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// For a local daemon on Linux, these values will be used for testing
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// user namespace support as the standard graph path(s) will be
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// appended with the root remapped uid.gid prefix
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dockerBasePath string
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volumesConfigPath string
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containerStoragePath string
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// baseImage is the name of the base image for testing
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// Environment variable WINDOWS_BASE_IMAGE can override this
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baseImage string
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}
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// New creates a new Execution struct
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func New() (*Execution, error) {
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localDaemon := true
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// Deterministically working out the environment in which CI is running
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// to evaluate whether the daemon is local or remote is not possible through
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// a build tag.
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//
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// For example Windows to Linux CI under Jenkins tests the 64-bit
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// Windows binary build with the daemon build tag, but calls a remote
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// Linux daemon.
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//
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// We can't just say if Windows then assume the daemon is local as at
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// some point, we will be testing the Windows CLI against a Windows daemon.
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//
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// Similarly, it will be perfectly valid to also run CLI tests from
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// a Linux CLI (built with the daemon tag) against a Windows daemon.
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if len(os.Getenv("DOCKER_REMOTE_DAEMON")) > 0 {
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localDaemon = false
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}
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info, err := getDaemonDockerInfo()
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if err != nil {
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return nil, err
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}
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daemonPlatform := info.OSType
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if daemonPlatform != "linux" && daemonPlatform != "windows" {
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return nil, fmt.Errorf("Cannot run tests against platform: %s", daemonPlatform)
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}
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baseImage := "scratch"
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volumesConfigPath := filepath.Join(info.DockerRootDir, "volumes")
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containerStoragePath := filepath.Join(info.DockerRootDir, "containers")
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// Make sure in context of daemon, not the local platform. Note we can't
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// use filepath.FromSlash or ToSlash here as they are a no-op on Unix.
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if daemonPlatform == "windows" {
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volumesConfigPath = strings.Replace(volumesConfigPath, `/`, `\`, -1)
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containerStoragePath = strings.Replace(containerStoragePath, `/`, `\`, -1)
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baseImage = "microsoft/windowsservercore"
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if len(os.Getenv("WINDOWS_BASE_IMAGE")) > 0 {
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baseImage = os.Getenv("WINDOWS_BASE_IMAGE")
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fmt.Println("INFO: Windows Base image is ", baseImage)
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}
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} else {
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volumesConfigPath = strings.Replace(volumesConfigPath, `\`, `/`, -1)
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containerStoragePath = strings.Replace(containerStoragePath, `\`, `/`, -1)
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}
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var daemonPid int
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dest := os.Getenv("DEST")
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b, err := ioutil.ReadFile(filepath.Join(dest, "docker.pid"))
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if err == nil {
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if p, err := strconv.ParseInt(string(b), 10, 32); err == nil {
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daemonPid = int(p)
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}
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}
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return &Execution{
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localDaemon: localDaemon,
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daemonPlatform: daemonPlatform,
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daemonStorageDriver: info.Driver,
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daemonKernelVersion: info.KernelVersion,
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dockerBasePath: info.DockerRootDir,
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volumesConfigPath: volumesConfigPath,
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containerStoragePath: containerStoragePath,
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isolation: info.Isolation,
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daemonPid: daemonPid,
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experimentalDaemon: info.ExperimentalBuild,
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baseImage: baseImage,
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}, nil
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}
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func getDaemonDockerInfo() (types.Info, error) {
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// FIXME(vdemeester) should be safe to use as is
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client, err := client.NewEnvClient()
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if err != nil {
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return types.Info{}, err
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}
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return client.Info(context.Background())
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}
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// LocalDaemon is true if the daemon under test is on the same
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// host as the CLI.
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func (e *Execution) LocalDaemon() bool {
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return e.localDaemon
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}
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// DaemonPlatform is held globally so that tests can make intelligent
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// decisions on how to configure themselves according to the platform
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// of the daemon. This is initialized in docker_utils by sending
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// a version call to the daemon and examining the response header.
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func (e *Execution) DaemonPlatform() string {
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return e.daemonPlatform
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}
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// DockerBasePath is the base path of the docker folder (by default it is -/var/run/docker)
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func (e *Execution) DockerBasePath() string {
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return e.dockerBasePath
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}
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// VolumesConfigPath is the path of the volume configuration for the testing daemon
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func (e *Execution) VolumesConfigPath() string {
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return e.volumesConfigPath
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}
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// ContainerStoragePath is the path where the container are stored for the testing daemon
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func (e *Execution) ContainerStoragePath() string {
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return e.containerStoragePath
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}
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// DaemonStorageDriver is held globally so that tests can know the storage
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// driver of the daemon. This is initialized in docker_utils by sending
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// a version call to the daemon and examining the response header.
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func (e *Execution) DaemonStorageDriver() string {
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return e.daemonStorageDriver
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}
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// Isolation is the isolation mode of the daemon under test
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func (e *Execution) Isolation() container.Isolation {
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return e.isolation
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}
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// DaemonPID is the pid of the main test daemon
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func (e *Execution) DaemonPID() int {
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return e.daemonPid
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}
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// ExperimentalDaemon tell whether the main daemon has
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// experimental features enabled or not
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func (e *Execution) ExperimentalDaemon() bool {
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return e.experimentalDaemon
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}
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// MinimalBaseImage is the image used for minimal builds (it depends on the platform)
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func (e *Execution) MinimalBaseImage() string {
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return e.baseImage
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}
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2017-01-03 20:47:25 +00:00
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// DaemonKernelVersion is the kernel version of the daemon as a string, as returned
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// by an INFO call to the daemon.
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2016-12-25 19:28:38 +00:00
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func (e *Execution) DaemonKernelVersion() string {
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return e.daemonKernelVersion
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}
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2017-01-03 20:47:25 +00:00
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// DaemonKernelVersionNumeric is the kernel version of the daemon as an integer.
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// Mostly useful on Windows where DaemonKernelVersion holds the full string such
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// as `10.0 14393 (14393.447.amd64fre.rs1_release_inmarket.161102-0100)`, but
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// integration tests really only need the `14393` piece to make decisions.
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func (e *Execution) DaemonKernelVersionNumeric() int {
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if e.daemonPlatform != "windows" {
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return -1
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}
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v, _ := strconv.Atoi(strings.Split(e.daemonKernelVersion, " ")[1])
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return v
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2016-12-25 19:28:38 +00:00
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}
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