github.com/dpiddy/docker@v1.12.2-rc1/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 client binary to use
    14  	dockerBinary = "docker"
    15  	// the docker daemon binary to use
    16  	dockerdBinary = "dockerd"
    17  
    18  	// path to containerd's ctr binary
    19  	ctrBinary = "docker-containerd-ctr"
    20  
    21  	// the private registry image to use for tests involving the registry
    22  	registryImageName = "registry"
    23  
    24  	// the private registry to use for tests
    25  	privateRegistryURL = "127.0.0.1:5000"
    26  
    27  	// TODO Windows CI. These are incorrect and need fixing into
    28  	// platform specific pieces.
    29  	runtimePath = "/var/run/docker"
    30  
    31  	workingDirectory string
    32  
    33  	// isLocalDaemon is true if the daemon under test is on the same
    34  	// host as the CLI.
    35  	isLocalDaemon bool
    36  
    37  	// daemonPlatform is held globally so that tests can make intelligent
    38  	// decisions on how to configure themselves according to the platform
    39  	// of the daemon. This is initialized in docker_utils by sending
    40  	// a version call to the daemon and examining the response header.
    41  	daemonPlatform string
    42  
    43  	// windowsDaemonKV is used on Windows to distinguish between different
    44  	// versions. This is necessary to enable certain tests based on whether
    45  	// the platform supports it. For example, Windows Server 2016 TP3 did
    46  	// not support volumes, but TP4 did.
    47  	windowsDaemonKV int
    48  
    49  	// daemonDefaultImage is the name of the default image to use when running
    50  	// tests. This is platform dependent.
    51  	daemonDefaultImage string
    52  
    53  	// For a local daemon on Linux, these values will be used for testing
    54  	// user namespace support as the standard graph path(s) will be
    55  	// appended with the root remapped uid.gid prefix
    56  	dockerBasePath       string
    57  	volumesConfigPath    string
    58  	containerStoragePath string
    59  
    60  	// daemonStorageDriver is held globally so that tests can know the storage
    61  	// driver of the daemon. This is initialized in docker_utils by sending
    62  	// a version call to the daemon and examining the response header.
    63  	daemonStorageDriver string
    64  )
    65  
    66  const (
    67  	// WindowsBaseImage is the name of the base image for Windows testing
    68  	WindowsBaseImage = "windowsservercore"
    69  
    70  	// DefaultImage is the name of the base image for the majority of tests that
    71  	// are run across suites
    72  	DefaultImage = "busybox"
    73  )
    74  
    75  func init() {
    76  	reexec.Init()
    77  	if dockerBin := os.Getenv("DOCKER_BINARY"); dockerBin != "" {
    78  		dockerBinary = dockerBin
    79  	}
    80  	var err error
    81  	dockerBinary, err = exec.LookPath(dockerBinary)
    82  	if err != nil {
    83  		fmt.Printf("ERROR: couldn't resolve full path to the Docker binary (%v)", err)
    84  		os.Exit(1)
    85  	}
    86  	if registryImage := os.Getenv("REGISTRY_IMAGE"); registryImage != "" {
    87  		registryImageName = registryImage
    88  	}
    89  	if registry := os.Getenv("REGISTRY_URL"); registry != "" {
    90  		privateRegistryURL = registry
    91  	}
    92  	workingDirectory, _ = os.Getwd()
    93  
    94  	// Deterministically working out the environment in which CI is running
    95  	// to evaluate whether the daemon is local or remote is not possible through
    96  	// a build tag.
    97  	//
    98  	// For example Windows to Linux CI under Jenkins tests the 64-bit
    99  	// Windows binary build with the daemon build tag, but calls a remote
   100  	// Linux daemon.
   101  	//
   102  	// We can't just say if Windows then assume the daemon is local as at
   103  	// some point, we will be testing the Windows CLI against a Windows daemon.
   104  	//
   105  	// Similarly, it will be perfectly valid to also run CLI tests from
   106  	// a Linux CLI (built with the daemon tag) against a Windows daemon.
   107  	if len(os.Getenv("DOCKER_REMOTE_DAEMON")) > 0 {
   108  		isLocalDaemon = false
   109  	} else {
   110  		isLocalDaemon = true
   111  	}
   112  
   113  	// TODO Windows CI. This are incorrect and need fixing into
   114  	// platform specific pieces.
   115  	// This is only used for a tests with local daemon true (Linux-only today)
   116  	// default is "/var/lib/docker", but we'll try and ask the
   117  	// /info endpoint for the specific root dir
   118  	dockerBasePath = "/var/lib/docker"
   119  	type Info struct {
   120  		DockerRootDir string
   121  	}
   122  	var i Info
   123  	status, b, err := sockRequest("GET", "/info", nil)
   124  	if err == nil && status == 200 {
   125  		if err = json.Unmarshal(b, &i); err == nil {
   126  			dockerBasePath = i.DockerRootDir
   127  		}
   128  	}
   129  	volumesConfigPath = dockerBasePath + "/volumes"
   130  	containerStoragePath = dockerBasePath + "/containers"
   131  }