github.com/akerouanton/docker@v1.11.0-rc3/integration-cli/docker_test_vars.go (about)

     1  package main
     2  
     3  import (
     4  	"encoding/json"
     5  	"fmt"
     6  	"os"
     7  	"os/exec"
     8  
     9  	"github.com/docker/docker/pkg/reexec"
    10  )
    11  
    12  var (
    13  	// the docker binary to use
    14  	dockerBinary = "docker"
    15  
    16  	// path to containerd's ctr binary
    17  	ctrBinary = "docker-containerd-ctr"
    18  
    19  	// the private registry image to use for tests involving the registry
    20  	registryImageName = "registry"
    21  
    22  	// the private registry to use for tests
    23  	privateRegistryURL = "127.0.0.1:5000"
    24  
    25  	// TODO Windows CI. These are incorrect and need fixing into
    26  	// platform specific pieces.
    27  	runtimePath = "/var/run/docker"
    28  
    29  	workingDirectory string
    30  
    31  	// isLocalDaemon is true if the daemon under test is on the same
    32  	// host as the CLI.
    33  	isLocalDaemon bool
    34  
    35  	// daemonPlatform is held globally so that tests can make intelligent
    36  	// decisions on how to configure themselves according to the platform
    37  	// of the daemon. This is initialized in docker_utils by sending
    38  	// a version call to the daemon and examining the response header.
    39  	daemonPlatform string
    40  
    41  	// windowsDaemonKV is used on Windows to distinguish between different
    42  	// versions. This is necessary to enable certain tests based on whether
    43  	// the platform supports it. For example, Windows Server 2016 TP3 does
    44  	// not support volumes, but TP4 does.
    45  	windowsDaemonKV int
    46  
    47  	// daemonDefaultImage is the name of the default image to use when running
    48  	// tests. This is platform dependent.
    49  	daemonDefaultImage string
    50  
    51  	// For a local daemon on Linux, these values will be used for testing
    52  	// user namespace support as the standard graph path(s) will be
    53  	// appended with the root remapped uid.gid prefix
    54  	dockerBasePath       string
    55  	volumesConfigPath    string
    56  	containerStoragePath string
    57  )
    58  
    59  const (
    60  	// WindowsBaseImage is the name of the base image for Windows testing
    61  	WindowsBaseImage = "windowsservercore"
    62  
    63  	// DefaultImage is the name of the base image for the majority of tests that
    64  	// are run across suites
    65  	DefaultImage = "busybox"
    66  )
    67  
    68  func init() {
    69  	reexec.Init()
    70  	if dockerBin := os.Getenv("DOCKER_BINARY"); dockerBin != "" {
    71  		dockerBinary = dockerBin
    72  	}
    73  	var err error
    74  	dockerBinary, err = exec.LookPath(dockerBinary)
    75  	if err != nil {
    76  		fmt.Printf("ERROR: couldn't resolve full path to the Docker binary (%v)", err)
    77  		os.Exit(1)
    78  	}
    79  	if registryImage := os.Getenv("REGISTRY_IMAGE"); registryImage != "" {
    80  		registryImageName = registryImage
    81  	}
    82  	if registry := os.Getenv("REGISTRY_URL"); registry != "" {
    83  		privateRegistryURL = registry
    84  	}
    85  	workingDirectory, _ = os.Getwd()
    86  
    87  	// Deterministically working out the environment in which CI is running
    88  	// to evaluate whether the daemon is local or remote is not possible through
    89  	// a build tag.
    90  	//
    91  	// For example Windows to Linux CI under Jenkins tests the 64-bit
    92  	// Windows binary build with the daemon build tag, but calls a remote
    93  	// Linux daemon.
    94  	//
    95  	// We can't just say if Windows then assume the daemon is local as at
    96  	// some point, we will be testing the Windows CLI against a Windows daemon.
    97  	//
    98  	// Similarly, it will be perfectly valid to also run CLI tests from
    99  	// a Linux CLI (built with the daemon tag) against a Windows daemon.
   100  	if len(os.Getenv("DOCKER_REMOTE_DAEMON")) > 0 {
   101  		isLocalDaemon = false
   102  	} else {
   103  		isLocalDaemon = true
   104  	}
   105  
   106  	// TODO Windows CI. This are incorrect and need fixing into
   107  	// platform specific pieces.
   108  	// This is only used for a tests with local daemon true (Linux-only today)
   109  	// default is "/var/lib/docker", but we'll try and ask the
   110  	// /info endpoint for the specific root dir
   111  	dockerBasePath = "/var/lib/docker"
   112  	type Info struct {
   113  		DockerRootDir string
   114  	}
   115  	var i Info
   116  	status, b, err := sockRequest("GET", "/info", nil)
   117  	if err == nil && status == 200 {
   118  		if err = json.Unmarshal(b, &i); err == nil {
   119  			dockerBasePath = i.DockerRootDir
   120  		}
   121  	}
   122  	volumesConfigPath = dockerBasePath + "/volumes"
   123  	containerStoragePath = dockerBasePath + "/containers"
   124  }