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package v1 // import "github.com/docker/docker/migrate/v1"
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import (
"crypto/rand"
"encoding/hex"
"encoding/json"
"fmt"
"io"
"io/ioutil"
"os"
"path/filepath"
"reflect"
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"runtime"
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"testing"
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"github.com/docker/distribution/reference"
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"github.com/docker/docker/distribution/metadata"
"github.com/docker/docker/image"
"github.com/docker/docker/layer"
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"github.com/opencontainers/go-digest"
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)
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func TestMigrateRefs ( t * testing . T ) {
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tmpdir , err := ioutil . TempDir ( "" , "migrate-tags" )
if err != nil {
t . Fatal ( err )
}
defer os . RemoveAll ( tmpdir )
ioutil . WriteFile ( filepath . Join ( tmpdir , "repositories-generic" ) , [ ] byte ( ` { "Repositories": { "busybox": { "latest":"b3ca410aa2c115c05969a7b2c8cf8a9fcf62c1340ed6a601c9ee50df337ec108","sha256:16a2a52884c2a9481ed267c2d46483eac7693b813a63132368ab098a71303f8a":"b3ca410aa2c115c05969a7b2c8cf8a9fcf62c1340ed6a601c9ee50df337ec108"},"registry": { "2":"5d165b8e4b203685301c815e95663231691d383fd5e3d3185d1ce3f8dddead3d","latest":"8d5547a9f329b1d3f93198cd661fb5117e5a96b721c5cf9a2c389e7dd4877128"}}} ` ) , 0600 )
ta := & mockTagAdder { }
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err = migrateRefs ( tmpdir , "generic" , ta , map [ string ] image . ID {
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"5d165b8e4b203685301c815e95663231691d383fd5e3d3185d1ce3f8dddead3d" : image . ID ( "sha256:2c26b46b68ffc68ff99b453c1d30413413422d706483bfa0f98a5e886266e7ae" ) ,
"b3ca410aa2c115c05969a7b2c8cf8a9fcf62c1340ed6a601c9ee50df337ec108" : image . ID ( "sha256:fcde2b2edba56bf408601fb721fe9b5c338d10ee429ea04fae5511b68fbf8fb9" ) ,
"abcdef3434c115c05969a7b2c8cf8a9fcf62c1340ed6a601c9ee50df337ec108" : image . ID ( "sha256:56434342345ae68ff99b453c1d30413413422d706483bfa0f98a5e886266e7ae" ) ,
} )
if err != nil {
t . Fatal ( err )
}
expected := map [ string ] string {
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"docker.io/library/busybox:latest" : "sha256:fcde2b2edba56bf408601fb721fe9b5c338d10ee429ea04fae5511b68fbf8fb9" ,
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"docker.io/library/busybox@sha256:16a2a52884c2a9481ed267c2d46483eac7693b813a63132368ab098a71303f8a" : "sha256:fcde2b2edba56bf408601fb721fe9b5c338d10ee429ea04fae5511b68fbf8fb9" ,
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"docker.io/library/registry:2" : "sha256:2c26b46b68ffc68ff99b453c1d30413413422d706483bfa0f98a5e886266e7ae" ,
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}
if ! reflect . DeepEqual ( expected , ta . refs ) {
t . Fatalf ( "Invalid migrated tags: expected %q, got %q" , expected , ta . refs )
}
// second migration is no-op
ioutil . WriteFile ( filepath . Join ( tmpdir , "repositories-generic" ) , [ ] byte ( ` { "Repositories": { "busybox": { "latest":"b3ca410aa2c115c05969a7b2c8cf8a9fcf62c1340ed6a601c9ee50df337ec108" ` ) , 0600 )
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err = migrateRefs ( tmpdir , "generic" , ta , map [ string ] image . ID {
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"b3ca410aa2c115c05969a7b2c8cf8a9fcf62c1340ed6a601c9ee50df337ec108" : image . ID ( "sha256:fcde2b2edba56bf408601fb721fe9b5c338d10ee429ea04fae5511b68fbf8fb9" ) ,
} )
if err != nil {
t . Fatal ( err )
}
if ! reflect . DeepEqual ( expected , ta . refs ) {
t . Fatalf ( "Invalid migrated tags: expected %q, got %q" , expected , ta . refs )
}
}
func TestMigrateContainers ( t * testing . T ) {
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// TODO Windows: Figure out why this is failing
if runtime . GOOS == "windows" {
t . Skip ( "Failing on Windows" )
}
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if runtime . GOARCH != "amd64" {
t . Skip ( "Test tailored to amd64 architecture" )
}
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tmpdir , err := ioutil . TempDir ( "" , "migrate-containers" )
if err != nil {
t . Fatal ( err )
}
defer os . RemoveAll ( tmpdir )
err = addContainer ( tmpdir , ` { "State": { "Running":false,"Paused":false,"Restarting":false,"OOMKilled":false,"Dead":false,"Pid":0,"ExitCode":0,"Error":"","StartedAt":"2015-11-10T21:42:40.604267436Z","FinishedAt":"2015-11-10T21:42:41.869265487Z"},"ID":"f780ee3f80e66e9b432a57049597118a66aab8932be88e5628d4c824edbee37c","Created":"2015-11-10T21:42:40.433831551Z","Path":"sh","Args":[],"Config": { "Hostname":"f780ee3f80e6","Domainname":"","User":"","AttachStdin":true,"AttachStdout":true,"AttachStderr":true,"Tty":true,"OpenStdin":true,"StdinOnce":true,"Env":null,"Cmd":["sh"],"Image":"busybox","Volumes":null,"WorkingDir":"","Entrypoint":null,"OnBuild":null,"Labels": { }},"Image":"2c5ac3f849df8627fcf2822727f87c57f38b7129d3604fbc11d861fe856ff093","NetworkSettings": { "Bridge":"","EndpointID":"","Gateway":"","GlobalIPv6Address":"","GlobalIPv6PrefixLen":0,"HairpinMode":false,"IPAddress":"","IPPrefixLen":0,"IPv6Gateway":"","LinkLocalIPv6Address":"","LinkLocalIPv6PrefixLen":0,"MacAddress":"","NetworkID":"","PortMapping":null,"Ports":null,"SandboxKey":"","SecondaryIPAddresses":null,"SecondaryIPv6Addresses":null},"ResolvConfPath":"/var/lib/docker/containers/f780ee3f80e66e9b432a57049597118a66aab8932be88e5628d4c824edbee37c/resolv.conf","HostnamePath":"/var/lib/docker/containers/f780ee3f80e66e9b432a57049597118a66aab8932be88e5628d4c824edbee37c/hostname","HostsPath":"/var/lib/docker/containers/f780ee3f80e66e9b432a57049597118a66aab8932be88e5628d4c824edbee37c/hosts","LogPath":"/var/lib/docker/containers/f780ee3f80e66e9b432a57049597118a66aab8932be88e5628d4c824edbee37c/f780ee3f80e66e9b432a57049597118a66aab8932be88e5628d4c824edbee37c-json.log","Name":"/determined_euclid","Driver":"overlay","ExecDriver":"native-0.2","MountLabel":"","ProcessLabel":"","RestartCount":0,"UpdateDns":false,"HasBeenStartedBefore":false,"MountPoints": { },"Volumes": { },"VolumesRW": { },"AppArmorProfile":""} ` )
if err != nil {
t . Fatal ( err )
}
// container with invalid image
err = addContainer ( tmpdir , ` { "State": { "Running":false,"Paused":false,"Restarting":false,"OOMKilled":false,"Dead":false,"Pid":0,"ExitCode":0,"Error":"","StartedAt":"2015-11-10T21:42:40.604267436Z","FinishedAt":"2015-11-10T21:42:41.869265487Z"},"ID":"e780ee3f80e66e9b432a57049597118a66aab8932be88e5628d4c824edbee37c","Created":"2015-11-10T21:42:40.433831551Z","Path":"sh","Args":[],"Config": { "Hostname":"f780ee3f80e6","Domainname":"","User":"","AttachStdin":true,"AttachStdout":true,"AttachStderr":true,"Tty":true,"OpenStdin":true,"StdinOnce":true,"Env":null,"Cmd":["sh"],"Image":"busybox","Volumes":null,"WorkingDir":"","Entrypoint":null,"OnBuild":null,"Labels": { }},"Image":"4c5ac3f849df8627fcf2822727f87c57f38b7129d3604fbc11d861fe856ff093","NetworkSettings": { "Bridge":"","EndpointID":"","Gateway":"","GlobalIPv6Address":"","GlobalIPv6PrefixLen":0,"HairpinMode":false,"IPAddress":"","IPPrefixLen":0,"IPv6Gateway":"","LinkLocalIPv6Address":"","LinkLocalIPv6PrefixLen":0,"MacAddress":"","NetworkID":"","PortMapping":null,"Ports":null,"SandboxKey":"","SecondaryIPAddresses":null,"SecondaryIPv6Addresses":null},"ResolvConfPath":"/var/lib/docker/containers/f780ee3f80e66e9b432a57049597118a66aab8932be88e5628d4c824edbee37c/resolv.conf","HostnamePath":"/var/lib/docker/containers/f780ee3f80e66e9b432a57049597118a66aab8932be88e5628d4c824edbee37c/hostname","HostsPath":"/var/lib/docker/containers/f780ee3f80e66e9b432a57049597118a66aab8932be88e5628d4c824edbee37c/hosts","LogPath":"/var/lib/docker/containers/f780ee3f80e66e9b432a57049597118a66aab8932be88e5628d4c824edbee37c/f780ee3f80e66e9b432a57049597118a66aab8932be88e5628d4c824edbee37c-json.log","Name":"/determined_euclid","Driver":"overlay","ExecDriver":"native-0.2","MountLabel":"","ProcessLabel":"","RestartCount":0,"UpdateDns":false,"HasBeenStartedBefore":false,"MountPoints": { },"Volumes": { },"VolumesRW": { },"AppArmorProfile":""} ` )
if err != nil {
t . Fatal ( err )
}
ifs , err := image . NewFSStoreBackend ( filepath . Join ( tmpdir , "imagedb" ) )
if err != nil {
t . Fatal ( err )
}
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ls := & mockMounter { }
mmMap := make ( map [ string ] image . LayerGetReleaser )
mmMap [ runtime . GOOS ] = ls
is , err := image . NewImageStore ( ifs , mmMap )
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if err != nil {
t . Fatal ( err )
}
imgID , err := is . Create ( [ ] byte ( ` { "architecture":"amd64","config": { "AttachStdin":false,"AttachStdout":false,"AttachStderr":false,"Cmd":["sh"],"Entrypoint":null,"Env":null,"Hostname":"23304fc829f9","Image":"d1592a710ac323612bd786fa8ac20727c58d8a67847e5a65177c594f43919498","Labels":null,"OnBuild":null,"OpenStdin":false,"StdinOnce":false,"Tty":false,"Volumes":null,"WorkingDir":"","Domainname":"","User":""},"container":"349b014153779e30093d94f6df2a43c7a0a164e05aa207389917b540add39b51","container_config": { "AttachStdin":false,"AttachStdout":false,"AttachStderr":false,"Cmd":["/bin/sh","-c","#(nop) CMD [\"sh\"]"],"Entrypoint":null,"Env":null,"Hostname":"23304fc829f9","Image":"d1592a710ac323612bd786fa8ac20727c58d8a67847e5a65177c594f43919498","Labels":null,"OnBuild":null,"OpenStdin":false,"StdinOnce":false,"Tty":false,"Volumes":null,"WorkingDir":"","Domainname":"","User":""},"created":"2015-10-31T22:22:55.613815829Z","docker_version":"1.8.2","history":[ { "created":"2015-10-31T22:22:54.690851953Z","created_by":"/bin/sh -c #(nop) ADD file:a3bc1e842b69636f9df5256c49c5374fb4eef1e281fe3f282c65fb853ee171c5 in /"}, { "created":"2015-10-31T22:22:55.613815829Z","created_by":"/bin/sh -c #(nop) CMD [\"sh\"]"}],"os":"linux","rootfs": { "type":"layers","diff_ids":["sha256:c6f988f4874bb0add23a778f753c65efe992244e148a1d2ec2a8b664fb66bbd1","sha256:5f70bf18a086007016e948b04aed3b82103a36bea41755b6cddfaf10ace3c6ef"]}} ` ) )
if err != nil {
t . Fatal ( err )
}
err = migrateContainers ( tmpdir , ls , is , map [ string ] image . ID {
"2c5ac3f849df8627fcf2822727f87c57f38b7129d3604fbc11d861fe856ff093" : imgID ,
} )
if err != nil {
t . Fatal ( err )
}
expected := [ ] mountInfo { {
"f780ee3f80e66e9b432a57049597118a66aab8932be88e5628d4c824edbee37c" ,
"f780ee3f80e66e9b432a57049597118a66aab8932be88e5628d4c824edbee37c" ,
"sha256:c3191d32a37d7159b2e30830937d2e30268ad6c375a773a8994911a3aba9b93f" ,
} }
if ! reflect . DeepEqual ( expected , ls . mounts ) {
t . Fatalf ( "invalid mounts: expected %q, got %q" , expected , ls . mounts )
}
if actual , expected := ls . count , 0 ; actual != expected {
t . Fatalf ( "invalid active mounts: expected %d, got %d" , expected , actual )
}
config2 , err := ioutil . ReadFile ( filepath . Join ( tmpdir , "containers" , "f780ee3f80e66e9b432a57049597118a66aab8932be88e5628d4c824edbee37c" , "config.v2.json" ) )
if err != nil {
t . Fatal ( err )
}
var config struct { Image string }
err = json . Unmarshal ( config2 , & config )
if err != nil {
t . Fatal ( err )
}
if actual , expected := config . Image , string ( imgID ) ; actual != expected {
t . Fatalf ( "invalid image pointer in migrated config: expected %q, got %q" , expected , actual )
}
}
func TestMigrateImages ( t * testing . T ) {
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// TODO Windows: Figure out why this is failing
if runtime . GOOS == "windows" {
t . Skip ( "Failing on Windows" )
}
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if runtime . GOARCH != "amd64" {
t . Skip ( "Test tailored to amd64 architecture" )
}
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tmpdir , err := ioutil . TempDir ( "" , "migrate-images" )
if err != nil {
t . Fatal ( err )
}
defer os . RemoveAll ( tmpdir )
// busybox from 1.9
id1 , err := addImage ( tmpdir , ` { "architecture":"amd64","config": { "Hostname":"23304fc829f9","Domainname":"","User":"","AttachStdin":false,"AttachStdout":false,"AttachStderr":false,"Tty":false,"OpenStdin":false,"StdinOnce":false,"Env":null,"Cmd":null,"Image":"","Volumes":null,"WorkingDir":"","Entrypoint":null,"OnBuild":null,"Labels":null},"container":"23304fc829f9b9349416f6eb1afec162907eba3a328f51d53a17f8986f865d65","container_config": { "Hostname":"23304fc829f9","Domainname":"","User":"","AttachStdin":false,"AttachStdout":false,"AttachStderr":false,"Tty":false,"OpenStdin":false,"StdinOnce":false,"Env":null,"Cmd":["/bin/sh","-c","#(nop) ADD file:a3bc1e842b69636f9df5256c49c5374fb4eef1e281fe3f282c65fb853ee171c5 in /"],"Image":"","Volumes":null,"WorkingDir":"","Entrypoint":null,"OnBuild":null,"Labels":null},"created":"2015-10-31T22:22:54.690851953Z","docker_version":"1.8.2","layer_id":"sha256:55dc925c23d1ed82551fd018c27ac3ee731377b6bad3963a2a4e76e753d70e57","os":"linux"} ` , "" , "" )
if err != nil {
t . Fatal ( err )
}
id2 , err := addImage ( tmpdir , ` { "architecture":"amd64","config": { "Hostname":"23304fc829f9","Domainname":"","User":"","AttachStdin":false,"AttachStdout":false,"AttachStderr":false,"Tty":false,"OpenStdin":false,"StdinOnce":false,"Env":null,"Cmd":["sh"],"Image":"d1592a710ac323612bd786fa8ac20727c58d8a67847e5a65177c594f43919498","Volumes":null,"WorkingDir":"","Entrypoint":null,"OnBuild":null,"Labels":null},"container":"349b014153779e30093d94f6df2a43c7a0a164e05aa207389917b540add39b51","container_config": { "Hostname":"23304fc829f9","Domainname":"","User":"","AttachStdin":false,"AttachStdout":false,"AttachStderr":false,"Tty":false,"OpenStdin":false,"StdinOnce":false,"Env":null,"Cmd":["/bin/sh","-c","#(nop) CMD [\"sh\"]"],"Image":"d1592a710ac323612bd786fa8ac20727c58d8a67847e5a65177c594f43919498","Volumes":null,"WorkingDir":"","Entrypoint":null,"OnBuild":null,"Labels":null},"created":"2015-10-31T22:22:55.613815829Z","docker_version":"1.8.2","layer_id":"sha256:a3ed95caeb02ffe68cdd9fd84406680ae93d633cb16422d00e8a7c22955b46d4","os":"linux","parent_id":"sha256:039b63dd2cbaa10d6015ea574392530571ed8d7b174090f032211285a71881d0"} ` , id1 , "" )
if err != nil {
t . Fatal ( err )
}
ifs , err := image . NewFSStoreBackend ( filepath . Join ( tmpdir , "imagedb" ) )
if err != nil {
t . Fatal ( err )
}
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ls := & mockRegistrar { }
mrMap := make ( map [ string ] image . LayerGetReleaser )
mrMap [ runtime . GOOS ] = ls
is , err := image . NewImageStore ( ifs , mrMap )
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if err != nil {
t . Fatal ( err )
}
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ms , err := metadata . NewFSMetadataStore ( filepath . Join ( tmpdir , "distribution" ) )
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if err != nil {
t . Fatal ( err )
}
mappings := make ( map [ string ] image . ID )
err = migrateImages ( tmpdir , ls , is , ms , mappings )
if err != nil {
t . Fatal ( err )
}
expected := map [ string ] image . ID {
id1 : image . ID ( "sha256:ca406eaf9c26898414ff5b7b3a023c33310759d6203be0663dbf1b3a712f432d" ) ,
id2 : image . ID ( "sha256:a488bec94bb96b26a968f913d25ef7d8d204d727ca328b52b4b059c7d03260b6" ) ,
}
if ! reflect . DeepEqual ( mappings , expected ) {
t . Fatalf ( "invalid image mappings: expected %q, got %q" , expected , mappings )
}
if actual , expected := ls . count , 2 ; actual != expected {
t . Fatalf ( "invalid register count: expected %q, got %q" , expected , actual )
}
ls . count = 0
// next images are busybox from 1.8.2
_ , err = addImage ( tmpdir , ` { "id":"17583c7dd0dae6244203b8029733bdb7d17fccbb2b5d93e2b24cf48b8bfd06e2","parent":"d1592a710ac323612bd786fa8ac20727c58d8a67847e5a65177c594f43919498","created":"2015-10-31T22:22:55.613815829Z","container":"349b014153779e30093d94f6df2a43c7a0a164e05aa207389917b540add39b51","container_config": { "Hostname":"23304fc829f9","Domainname":"","User":"","AttachStdin":false,"AttachStdout":false,"AttachStderr":false,"ExposedPorts":null,"PublishService":"","Tty":false,"OpenStdin":false,"StdinOnce":false,"Env":null,"Cmd":["/bin/sh","-c","#(nop) CMD [\"sh\"]"],"Image":"d1592a710ac323612bd786fa8ac20727c58d8a67847e5a65177c594f43919498","Volumes":null,"VolumeDriver":"","WorkingDir":"","Entrypoint":null,"NetworkDisabled":false,"MacAddress":"","OnBuild":null,"Labels":null},"docker_version":"1.8.2","config": { "Hostname":"23304fc829f9","Domainname":"","User":"","AttachStdin":false,"AttachStdout":false,"AttachStderr":false,"ExposedPorts":null,"PublishService":"","Tty":false,"OpenStdin":false,"StdinOnce":false,"Env":null,"Cmd":["sh"],"Image":"d1592a710ac323612bd786fa8ac20727c58d8a67847e5a65177c594f43919498","Volumes":null,"VolumeDriver":"","WorkingDir":"","Entrypoint":null,"NetworkDisabled":false,"MacAddress":"","OnBuild":null,"Labels":null},"architecture":"amd64","os":"linux","Size":0} ` , "" , "sha256:a3ed95caeb02ffe68cdd9fd84406680ae93d633cb16422d00e8a7c22955b46d4" )
if err != nil {
t . Fatal ( err )
}
_ , err = addImage ( tmpdir , ` { "id":"d1592a710ac323612bd786fa8ac20727c58d8a67847e5a65177c594f43919498","created":"2015-10-31T22:22:54.690851953Z","container":"23304fc829f9b9349416f6eb1afec162907eba3a328f51d53a17f8986f865d65","container_config": { "Hostname":"23304fc829f9","Domainname":"","User":"","AttachStdin":false,"AttachStdout":false,"AttachStderr":false,"ExposedPorts":null,"PublishService":"","Tty":false,"OpenStdin":false,"StdinOnce":false,"Env":null,"Cmd":["/bin/sh","-c","#(nop) ADD file:a3bc1e842b69636f9df5256c49c5374fb4eef1e281fe3f282c65fb853ee171c5 in /"],"Image":"","Volumes":null,"VolumeDriver":"","WorkingDir":"","Entrypoint":null,"NetworkDisabled":false,"MacAddress":"","OnBuild":null,"Labels":null},"docker_version":"1.8.2","config": { "Hostname":"23304fc829f9","Domainname":"","User":"","AttachStdin":false,"AttachStdout":false,"AttachStderr":false,"ExposedPorts":null,"PublishService":"","Tty":false,"OpenStdin":false,"StdinOnce":false,"Env":null,"Cmd":null,"Image":"","Volumes":null,"VolumeDriver":"","WorkingDir":"","Entrypoint":null,"NetworkDisabled":false,"MacAddress":"","OnBuild":null,"Labels":null},"architecture":"amd64","os":"linux","Size":1108935} ` , "" , "sha256:55dc925c23d1ed82551fd018c27ac3ee731377b6bad3963a2a4e76e753d70e57" )
if err != nil {
t . Fatal ( err )
}
err = migrateImages ( tmpdir , ls , is , ms , mappings )
if err != nil {
t . Fatal ( err )
}
expected [ "d1592a710ac323612bd786fa8ac20727c58d8a67847e5a65177c594f43919498" ] = image . ID ( "sha256:c091bb33854e57e6902b74c08719856d30b5593c7db6143b2b48376b8a588395" )
expected [ "17583c7dd0dae6244203b8029733bdb7d17fccbb2b5d93e2b24cf48b8bfd06e2" ] = image . ID ( "sha256:d963020e755ff2715b936065949472c1f8a6300144b922992a1a421999e71f07" )
if actual , expected := ls . count , 2 ; actual != expected {
t . Fatalf ( "invalid register count: expected %q, got %q" , expected , actual )
}
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v2MetadataService := metadata . NewV2MetadataService ( ms )
receivedMetadata , err := v2MetadataService . GetMetadata ( layer . EmptyLayer . DiffID ( ) )
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if err != nil {
t . Fatal ( err )
}
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expectedMetadata := [ ] metadata . V2Metadata {
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{ Digest : digest . Digest ( "sha256:55dc925c23d1ed82551fd018c27ac3ee731377b6bad3963a2a4e76e753d70e57" ) } ,
{ Digest : digest . Digest ( "sha256:a3ed95caeb02ffe68cdd9fd84406680ae93d633cb16422d00e8a7c22955b46d4" ) } ,
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}
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if ! reflect . DeepEqual ( expectedMetadata , receivedMetadata ) {
t . Fatalf ( "invalid metadata: expected %q, got %q" , expectedMetadata , receivedMetadata )
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}
}
func TestMigrateUnsupported ( t * testing . T ) {
tmpdir , err := ioutil . TempDir ( "" , "migrate-empty" )
if err != nil {
t . Fatal ( err )
}
defer os . RemoveAll ( tmpdir )
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err = os . MkdirAll ( filepath . Join ( tmpdir , "graph" ) , 0700 )
if err != nil {
t . Fatal ( err )
}
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err = Migrate ( tmpdir , "generic" , nil , nil , nil , nil )
if err != errUnsupported {
t . Fatalf ( "expected unsupported error, got %q" , err )
}
}
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func TestMigrateEmptyDir ( t * testing . T ) {
tmpdir , err := ioutil . TempDir ( "" , "migrate-empty" )
if err != nil {
t . Fatal ( err )
}
defer os . RemoveAll ( tmpdir )
err = Migrate ( tmpdir , "generic" , nil , nil , nil , nil )
if err != nil {
t . Fatal ( err )
}
}
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func addImage ( dest , jsonConfig , parent , checksum string ) ( string , error ) {
var config struct { ID string }
if err := json . Unmarshal ( [ ] byte ( jsonConfig ) , & config ) ; err != nil {
return "" , err
}
if config . ID == "" {
b := make ( [ ] byte , 32 )
rand . Read ( b )
config . ID = hex . EncodeToString ( b )
}
contDir := filepath . Join ( dest , "graph" , config . ID )
if err := os . MkdirAll ( contDir , 0700 ) ; err != nil {
return "" , err
}
if err := ioutil . WriteFile ( filepath . Join ( contDir , "json" ) , [ ] byte ( jsonConfig ) , 0600 ) ; err != nil {
return "" , err
}
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if checksum != "" {
if err := ioutil . WriteFile ( filepath . Join ( contDir , "checksum" ) , [ ] byte ( checksum ) , 0600 ) ; err != nil {
return "" , err
}
}
if err := ioutil . WriteFile ( filepath . Join ( contDir , ".migration-diffid" ) , [ ] byte ( layer . EmptyLayer . DiffID ( ) ) , 0600 ) ; err != nil {
return "" , err
}
if err := ioutil . WriteFile ( filepath . Join ( contDir , ".migration-size" ) , [ ] byte ( "0" ) , 0600 ) ; err != nil {
return "" , err
}
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if parent != "" {
if err := ioutil . WriteFile ( filepath . Join ( contDir , "parent" ) , [ ] byte ( parent ) , 0600 ) ; err != nil {
return "" , err
}
}
if checksum != "" {
if err := ioutil . WriteFile ( filepath . Join ( contDir , "checksum" ) , [ ] byte ( checksum ) , 0600 ) ; err != nil {
return "" , err
}
}
return config . ID , nil
}
func addContainer ( dest , jsonConfig string ) error {
var config struct { ID string }
if err := json . Unmarshal ( [ ] byte ( jsonConfig ) , & config ) ; err != nil {
return err
}
contDir := filepath . Join ( dest , "containers" , config . ID )
if err := os . MkdirAll ( contDir , 0700 ) ; err != nil {
return err
}
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return ioutil . WriteFile ( filepath . Join ( contDir , "config.json" ) , [ ] byte ( jsonConfig ) , 0600 )
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}
type mockTagAdder struct {
refs map [ string ] string
}
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func ( t * mockTagAdder ) AddTag ( ref reference . Named , id digest . Digest , force bool ) error {
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if t . refs == nil {
t . refs = make ( map [ string ] string )
}
t . refs [ ref . String ( ) ] = id . String ( )
return nil
}
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func ( t * mockTagAdder ) AddDigest ( ref reference . Canonical , id digest . Digest , force bool ) error {
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return t . AddTag ( ref , id , force )
}
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type mockRegistrar struct {
layers map [ layer . ChainID ] * mockLayer
count int
}
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func ( r * mockRegistrar ) RegisterByGraphID ( graphID string , parent layer . ChainID , diffID layer . DiffID , tarDataFile string , size int64 ) ( layer . Layer , error ) {
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r . count ++
l := & mockLayer { }
if parent != "" {
p , exists := r . layers [ parent ]
if ! exists {
return nil , fmt . Errorf ( "invalid parent %q" , parent )
}
l . parent = p
l . diffIDs = append ( l . diffIDs , p . diffIDs ... )
}
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l . diffIDs = append ( l . diffIDs , diffID )
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if r . layers == nil {
r . layers = make ( map [ layer . ChainID ] * mockLayer )
}
r . layers [ l . ChainID ( ) ] = l
return l , nil
}
func ( r * mockRegistrar ) Release ( l layer . Layer ) ( [ ] layer . Metadata , error ) {
return nil , nil
}
func ( r * mockRegistrar ) Get ( layer . ChainID ) ( layer . Layer , error ) {
return nil , nil
}
type mountInfo struct {
name , graphID , parent string
}
type mockMounter struct {
mounts [ ] mountInfo
count int
}
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func ( r * mockMounter ) CreateRWLayerByGraphID ( name string , graphID string , parent layer . ChainID ) error {
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r . mounts = append ( r . mounts , mountInfo { name , graphID , string ( parent ) } )
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return nil
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}
func ( r * mockMounter ) Unmount ( string ) error {
r . count --
return nil
}
func ( r * mockMounter ) Get ( layer . ChainID ) ( layer . Layer , error ) {
return nil , nil
}
func ( r * mockMounter ) Release ( layer . Layer ) ( [ ] layer . Metadata , error ) {
return nil , nil
}
type mockLayer struct {
diffIDs [ ] layer . DiffID
parent * mockLayer
}
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func ( l * mockLayer ) TarStream ( ) ( io . ReadCloser , error ) {
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return nil , nil
}
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func ( l * mockLayer ) TarStreamFrom ( layer . ChainID ) ( io . ReadCloser , error ) {
return nil , nil
}
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func ( l * mockLayer ) ChainID ( ) layer . ChainID {
return layer . CreateChainID ( l . diffIDs )
}
func ( l * mockLayer ) DiffID ( ) layer . DiffID {
return l . diffIDs [ len ( l . diffIDs ) - 1 ]
}
func ( l * mockLayer ) Parent ( ) layer . Layer {
if l . parent == nil {
return nil
}
return l . parent
}
func ( l * mockLayer ) Size ( ) ( int64 , error ) {
return 0 , nil
}
func ( l * mockLayer ) DiffSize ( ) ( int64 , error ) {
return 0 , nil
}
func ( l * mockLayer ) Metadata ( ) ( map [ string ] string , error ) {
return nil , nil
}