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|
package handlers
import (
"bytes"
"encoding/base64"
"encoding/json"
"fmt"
"io"
"io/ioutil"
"net/http"
"os"
"path/filepath"
"strconv"
"strings"
"github.com/containers/buildah"
"github.com/containers/buildah/imagebuildah"
"github.com/containers/libpod/pkg/api/handlers/utils"
"github.com/containers/storage/pkg/archive"
)
func BuildImage(w http.ResponseWriter, r *http.Request) {
authConfigs := map[string]AuthConfig{}
if hdr, found := r.Header["X-Registry-Config"]; found && len(hdr) > 0 {
authConfigsJSON := base64.NewDecoder(base64.URLEncoding, strings.NewReader(hdr[0]))
if json.NewDecoder(authConfigsJSON).Decode(&authConfigs) != nil {
utils.BadRequest(w, "X-Registry-Config", hdr[0], json.NewDecoder(authConfigsJSON).Decode(&authConfigs))
return
}
}
if hdr, found := r.Header["Content-Type"]; found && len(hdr) > 0 {
if hdr[0] != "application/x-tar" {
utils.BadRequest(w, "Content-Type", hdr[0],
fmt.Errorf("Content-Type: %s is not supported. Should be \"application/x-tar\"", hdr[0]))
}
}
anchorDir, err := extractTarFile(r, w)
if err != nil {
utils.InternalServerError(w, err)
return
}
defer os.RemoveAll(anchorDir)
query := struct {
Dockerfile string `schema:"dockerfile"`
Tag string `schema:"t"`
ExtraHosts string `schema:"extrahosts"`
Remote string `schema:"remote"`
Quiet bool `schema:"q"`
NoCache bool `schema:"nocache"`
CacheFrom string `schema:"cachefrom"`
Pull bool `schema:"pull"`
Rm bool `schema:"rm"`
ForceRm bool `schema:"forcerm"`
Memory int64 `schema:"memory"`
MemSwap int64 `schema:"memswap"`
CpuShares uint64 `schema:"cpushares"`
CpuSetCpus string `schema:"cpusetcpus"`
CpuPeriod uint64 `schema:"cpuperiod"`
CpuQuota int64 `schema:"cpuquota"`
BuildArgs string `schema:"buildargs"`
ShmSize int `schema:"shmsize"`
Squash bool `schema:"squash"`
Labels string `schema:"labels"`
NetworkMode string `schema:"networkmode"`
Platform string `schema:"platform"`
Target string `schema:"target"`
Outputs string `schema:"outputs"`
Registry string `schema:"registry"`
}{
Dockerfile: "Dockerfile",
Tag: "",
ExtraHosts: "",
Remote: "",
Quiet: false,
NoCache: false,
CacheFrom: "",
Pull: false,
Rm: true,
ForceRm: false,
Memory: 0,
MemSwap: 0,
CpuShares: 0,
CpuSetCpus: "",
CpuPeriod: 0,
CpuQuota: 0,
BuildArgs: "",
ShmSize: 64 * 1024 * 1024,
Squash: false,
Labels: "",
NetworkMode: "",
Platform: "",
Target: "",
Outputs: "",
Registry: "docker.io",
}
if err := decodeQuery(r, &query); err != nil {
utils.Error(w, http.StatusText(http.StatusBadRequest), http.StatusBadRequest, err)
return
}
var (
// Tag is the name with optional tag...
name = query.Tag
tag = "latest"
)
if strings.Contains(query.Tag, ":") {
tokens := strings.SplitN(query.Tag, ":", 2)
name = tokens[0]
tag = tokens[1]
}
if _, found := r.URL.Query()["target"]; found {
name = query.Target
}
var buildArgs = map[string]string{}
if _, found := r.URL.Query()["buildargs"]; found {
if err := json.Unmarshal([]byte(query.BuildArgs), &buildArgs); err != nil {
utils.BadRequest(w, "buildargs", query.BuildArgs, err)
return
}
}
// convert label formats
var labels = []string{}
if _, found := r.URL.Query()["labels"]; found {
var m = map[string]string{}
if err := json.Unmarshal([]byte(query.Labels), &m); err != nil {
utils.BadRequest(w, "labels", query.Labels, err)
return
}
for k, v := range m {
labels = append(labels, k+"="+v)
}
}
pullPolicy := buildah.PullIfMissing
if _, found := r.URL.Query()["pull"]; found {
if query.Pull {
pullPolicy = buildah.PullAlways
}
}
// build events will be recorded here
var (
buildEvents = []string{}
progress = bytes.Buffer{}
)
buildOptions := imagebuildah.BuildOptions{
ContextDirectory: filepath.Join(anchorDir, "build"),
PullPolicy: pullPolicy,
Registry: query.Registry,
IgnoreUnrecognizedInstructions: true,
Quiet: query.Quiet,
Isolation: buildah.IsolationChroot,
Runtime: "",
RuntimeArgs: nil,
TransientMounts: nil,
Compression: archive.Gzip,
Args: buildArgs,
Output: name,
AdditionalTags: []string{tag},
Log: func(format string, args ...interface{}) {
buildEvents = append(buildEvents, fmt.Sprintf(format, args...))
},
In: nil,
Out: &progress,
Err: &progress,
SignaturePolicyPath: "",
ReportWriter: &progress,
OutputFormat: buildah.Dockerv2ImageManifest,
SystemContext: nil,
NamespaceOptions: nil,
ConfigureNetwork: 0,
CNIPluginPath: "",
CNIConfigDir: "",
IDMappingOptions: nil,
AddCapabilities: nil,
DropCapabilities: nil,
CommonBuildOpts: &buildah.CommonBuildOptions{
AddHost: nil,
CgroupParent: "",
CPUPeriod: query.CpuPeriod,
CPUQuota: query.CpuQuota,
CPUShares: query.CpuShares,
CPUSetCPUs: query.CpuSetCpus,
CPUSetMems: "",
HTTPProxy: false,
Memory: query.Memory,
DNSSearch: nil,
DNSServers: nil,
DNSOptions: nil,
MemorySwap: query.MemSwap,
LabelOpts: nil,
SeccompProfilePath: "",
ApparmorProfile: "",
ShmSize: strconv.Itoa(query.ShmSize),
Ulimit: nil,
Volumes: nil,
},
DefaultMountsFilePath: "",
IIDFile: "",
Squash: query.Squash,
Labels: labels,
Annotations: nil,
OnBuild: nil,
Layers: false,
NoCache: query.NoCache,
RemoveIntermediateCtrs: query.Rm,
ForceRmIntermediateCtrs: query.ForceRm,
BlobDirectory: "",
Target: query.Target,
Devices: nil,
}
id, _, err := getRuntime(r).Build(r.Context(), buildOptions, query.Dockerfile)
if err != nil {
utils.InternalServerError(w, err)
}
// Find image ID that was built...
utils.WriteResponse(w, http.StatusOK,
struct {
Stream string `json:"stream"`
}{
Stream: progress.String() + "\n" +
strings.Join(buildEvents, "\n") +
fmt.Sprintf("\nSuccessfully built %s\n", id),
})
}
func extractTarFile(r *http.Request, w http.ResponseWriter) (string, error) {
// build a home for the request body
anchorDir, err := ioutil.TempDir("", "libpod_builder")
if err != nil {
return "", err
}
buildDir := filepath.Join(anchorDir, "build")
path := filepath.Join(anchorDir, "tarBall")
tarBall, err := os.OpenFile(path, os.O_RDWR|os.O_CREATE|os.O_TRUNC, 0666)
if err != nil {
return "", err
}
defer tarBall.Close()
// Content-Length not used as too many existing API clients didn't honor it
_, err = io.Copy(tarBall, r.Body)
r.Body.Close()
if err != nil {
utils.InternalServerError(w,
fmt.Errorf("failed Request: Unable to copy tar file from request body %s", r.RequestURI))
}
_, _ = tarBall.Seek(0, 0)
if err := archive.Untar(tarBall, buildDir, &archive.TarOptions{}); err != nil {
return "", err
}
return anchorDir, nil
}
|
