forked from TrueCloudLab/distribution
615 lines
18 KiB
Go
615 lines
18 KiB
Go
package handlers
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import (
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"bytes"
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"encoding/json"
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"fmt"
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"io"
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"io/ioutil"
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"net/http"
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"net/http/httptest"
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"net/http/httputil"
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"net/url"
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"os"
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"reflect"
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"strings"
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"testing"
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"github.com/docker/distribution/configuration"
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"github.com/docker/distribution/digest"
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"github.com/docker/distribution/manifest"
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"github.com/docker/distribution/registry/api/v2"
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_ "github.com/docker/distribution/registry/storage/driver/inmemory"
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"github.com/docker/distribution/testutil"
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"github.com/docker/libtrust"
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"github.com/gorilla/handlers"
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"golang.org/x/net/context"
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)
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// TestCheckAPI hits the base endpoint (/v2/) ensures we return the specified
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// 200 OK response.
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func TestCheckAPI(t *testing.T) {
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env := newTestEnv(t)
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baseURL, err := env.builder.BuildBaseURL()
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if err != nil {
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t.Fatalf("unexpected error building base url: %v", err)
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}
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resp, err := http.Get(baseURL)
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if err != nil {
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t.Fatalf("unexpected error issuing request: %v", err)
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}
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defer resp.Body.Close()
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checkResponse(t, "issuing api base check", resp, http.StatusOK)
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checkHeaders(t, resp, http.Header{
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"Content-Type": []string{"application/json; charset=utf-8"},
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"Content-Length": []string{"2"},
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})
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p, err := ioutil.ReadAll(resp.Body)
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if err != nil {
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t.Fatalf("unexpected error reading response body: %v", err)
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}
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if string(p) != "{}" {
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t.Fatalf("unexpected response body: %v", string(p))
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}
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}
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func TestURLPrefix(t *testing.T) {
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config := configuration.Configuration{
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Storage: configuration.Storage{
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"inmemory": configuration.Parameters{},
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},
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}
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config.HTTP.Prefix = "/test/"
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env := newTestEnvWithConfig(t, &config)
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baseURL, err := env.builder.BuildBaseURL()
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if err != nil {
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t.Fatalf("unexpected error building base url: %v", err)
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}
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parsed, _ := url.Parse(baseURL)
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if !strings.HasPrefix(parsed.Path, config.HTTP.Prefix) {
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t.Fatalf("Prefix %v not included in test url %v", config.HTTP.Prefix, baseURL)
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}
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resp, err := http.Get(baseURL)
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if err != nil {
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t.Fatalf("unexpected error issuing request: %v", err)
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}
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defer resp.Body.Close()
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checkResponse(t, "issuing api base check", resp, http.StatusOK)
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checkHeaders(t, resp, http.Header{
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"Content-Type": []string{"application/json; charset=utf-8"},
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"Content-Length": []string{"2"},
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})
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}
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// TestLayerAPI conducts a full of the of the layer api.
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func TestLayerAPI(t *testing.T) {
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// TODO(stevvooe): This test code is complete junk but it should cover the
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// complete flow. This must be broken down and checked against the
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// specification *before* we submit the final to docker core.
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env := newTestEnv(t)
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imageName := "foo/bar"
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// "build" our layer file
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layerFile, tarSumStr, err := testutil.CreateRandomTarFile()
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if err != nil {
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t.Fatalf("error creating random layer file: %v", err)
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}
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layerDigest := digest.Digest(tarSumStr)
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// -----------------------------------
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// Test fetch for non-existent content
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layerURL, err := env.builder.BuildBlobURL(imageName, layerDigest)
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if err != nil {
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t.Fatalf("error building url: %v", err)
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}
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resp, err := http.Get(layerURL)
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if err != nil {
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t.Fatalf("unexpected error fetching non-existent layer: %v", err)
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}
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checkResponse(t, "fetching non-existent content", resp, http.StatusNotFound)
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// ------------------------------------------
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// Test head request for non-existent content
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resp, err = http.Head(layerURL)
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if err != nil {
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t.Fatalf("unexpected error checking head on non-existent layer: %v", err)
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}
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checkResponse(t, "checking head on non-existent layer", resp, http.StatusNotFound)
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// ------------------------------------------
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// Start an upload and cancel
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uploadURLBase := startPushLayer(t, env.builder, imageName)
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req, err := http.NewRequest("DELETE", uploadURLBase, nil)
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if err != nil {
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t.Fatalf("unexpected error creating delete request: %v", err)
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}
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resp, err = http.DefaultClient.Do(req)
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if err != nil {
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t.Fatalf("unexpected error sending delete request: %v", err)
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}
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checkResponse(t, "deleting upload", resp, http.StatusNoContent)
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// A status check should result in 404
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resp, err = http.Get(uploadURLBase)
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if err != nil {
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t.Fatalf("unexpected error getting upload status: %v", err)
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}
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checkResponse(t, "status of deleted upload", resp, http.StatusNotFound)
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// -----------------------------------------
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// Do layer push with an empty body and different digest
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uploadURLBase = startPushLayer(t, env.builder, imageName)
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resp, err = doPushLayer(t, env.builder, imageName, layerDigest, uploadURLBase, bytes.NewReader([]byte{}))
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if err != nil {
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t.Fatalf("unexpected error doing bad layer push: %v", err)
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}
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checkResponse(t, "bad layer push", resp, http.StatusBadRequest)
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checkBodyHasErrorCodes(t, "bad layer push", resp, v2.ErrorCodeDigestInvalid)
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// -----------------------------------------
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// Do layer push with an empty body and correct digest
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zeroDigest, err := digest.FromTarArchive(bytes.NewReader([]byte{}))
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if err != nil {
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t.Fatalf("unexpected error digesting empty buffer: %v", err)
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}
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uploadURLBase = startPushLayer(t, env.builder, imageName)
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pushLayer(t, env.builder, imageName, zeroDigest, uploadURLBase, bytes.NewReader([]byte{}))
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// -----------------------------------------
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// Do layer push with an empty body and correct digest
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// This is a valid but empty tarfile!
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emptyTar := bytes.Repeat([]byte("\x00"), 1024)
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emptyDigest, err := digest.FromTarArchive(bytes.NewReader(emptyTar))
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if err != nil {
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t.Fatalf("unexpected error digesting empty tar: %v", err)
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}
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uploadURLBase = startPushLayer(t, env.builder, imageName)
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pushLayer(t, env.builder, imageName, emptyDigest, uploadURLBase, bytes.NewReader(emptyTar))
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// ------------------------------------------
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// Now, actually do successful upload.
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layerLength, _ := layerFile.Seek(0, os.SEEK_END)
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layerFile.Seek(0, os.SEEK_SET)
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uploadURLBase = startPushLayer(t, env.builder, imageName)
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pushLayer(t, env.builder, imageName, layerDigest, uploadURLBase, layerFile)
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// ------------------------
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// Use a head request to see if the layer exists.
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resp, err = http.Head(layerURL)
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if err != nil {
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t.Fatalf("unexpected error checking head on existing layer: %v", err)
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}
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checkResponse(t, "checking head on existing layer", resp, http.StatusOK)
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checkHeaders(t, resp, http.Header{
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"Content-Length": []string{fmt.Sprint(layerLength)},
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})
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// ----------------
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// Fetch the layer!
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resp, err = http.Get(layerURL)
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if err != nil {
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t.Fatalf("unexpected error fetching layer: %v", err)
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}
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checkResponse(t, "fetching layer", resp, http.StatusOK)
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checkHeaders(t, resp, http.Header{
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"Content-Length": []string{fmt.Sprint(layerLength)},
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})
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// Verify the body
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verifier := digest.NewDigestVerifier(layerDigest)
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io.Copy(verifier, resp.Body)
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if !verifier.Verified() {
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t.Fatalf("response body did not pass verification")
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}
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// Missing tests:
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// - Upload the same tarsum file under and different repository and
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// ensure the content remains uncorrupted.
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}
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func TestManifestAPI(t *testing.T) {
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env := newTestEnv(t)
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imageName := "foo/bar"
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tag := "thetag"
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manifestURL, err := env.builder.BuildManifestURL(imageName, tag)
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if err != nil {
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t.Fatalf("unexpected error getting manifest url: %v", err)
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}
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// -----------------------------
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// Attempt to fetch the manifest
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resp, err := http.Get(manifestURL)
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if err != nil {
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t.Fatalf("unexpected error getting manifest: %v", err)
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}
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defer resp.Body.Close()
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checkResponse(t, "getting non-existent manifest", resp, http.StatusNotFound)
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checkBodyHasErrorCodes(t, "getting non-existent manifest", resp, v2.ErrorCodeManifestUnknown)
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tagsURL, err := env.builder.BuildTagsURL(imageName)
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if err != nil {
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t.Fatalf("unexpected error building tags url: %v", err)
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}
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resp, err = http.Get(tagsURL)
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if err != nil {
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t.Fatalf("unexpected error getting unknown tags: %v", err)
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}
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defer resp.Body.Close()
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// Check that we get an unknown repository error when asking for tags
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checkResponse(t, "getting unknown manifest tags", resp, http.StatusNotFound)
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checkBodyHasErrorCodes(t, "getting unknown manifest tags", resp, v2.ErrorCodeNameUnknown)
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// --------------------------------
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// Attempt to push unsigned manifest with missing layers
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unsignedManifest := &manifest.Manifest{
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Name: imageName,
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Tag: tag,
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FSLayers: []manifest.FSLayer{
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{
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BlobSum: "asdf",
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},
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{
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BlobSum: "qwer",
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},
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},
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}
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resp = putManifest(t, "putting unsigned manifest", manifestURL, unsignedManifest)
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defer resp.Body.Close()
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checkResponse(t, "posting unsigned manifest", resp, http.StatusBadRequest)
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_, p, counts := checkBodyHasErrorCodes(t, "getting unknown manifest tags", resp,
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v2.ErrorCodeManifestUnverified, v2.ErrorCodeBlobUnknown, v2.ErrorCodeDigestInvalid)
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expectedCounts := map[v2.ErrorCode]int{
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v2.ErrorCodeManifestUnverified: 1,
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v2.ErrorCodeBlobUnknown: 2,
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v2.ErrorCodeDigestInvalid: 2,
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}
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if !reflect.DeepEqual(counts, expectedCounts) {
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t.Fatalf("unexpected number of error codes encountered: %v\n!=\n%v\n---\n%s", counts, expectedCounts, string(p))
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}
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// TODO(stevvooe): Add a test case where we take a mostly valid registry,
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// tamper with the content and ensure that we get a unverified manifest
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// error.
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// Push 2 random layers
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expectedLayers := make(map[digest.Digest]io.ReadSeeker)
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for i := range unsignedManifest.FSLayers {
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rs, dgstStr, err := testutil.CreateRandomTarFile()
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if err != nil {
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t.Fatalf("error creating random layer %d: %v", i, err)
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}
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dgst := digest.Digest(dgstStr)
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expectedLayers[dgst] = rs
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unsignedManifest.FSLayers[i].BlobSum = dgst
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uploadURLBase := startPushLayer(t, env.builder, imageName)
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pushLayer(t, env.builder, imageName, dgst, uploadURLBase, rs)
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}
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// -------------------
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// Push the signed manifest with all layers pushed.
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signedManifest, err := manifest.Sign(unsignedManifest, env.pk)
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if err != nil {
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t.Fatalf("unexpected error signing manifest: %v", err)
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}
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resp = putManifest(t, "putting signed manifest", manifestURL, signedManifest)
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checkResponse(t, "putting signed manifest", resp, http.StatusAccepted)
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resp, err = http.Get(manifestURL)
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if err != nil {
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t.Fatalf("unexpected error fetching manifest: %v", err)
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}
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defer resp.Body.Close()
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checkResponse(t, "fetching uploaded manifest", resp, http.StatusOK)
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var fetchedManifest manifest.SignedManifest
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dec := json.NewDecoder(resp.Body)
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if err := dec.Decode(&fetchedManifest); err != nil {
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t.Fatalf("error decoding fetched manifest: %v", err)
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}
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if !bytes.Equal(fetchedManifest.Raw, signedManifest.Raw) {
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t.Fatalf("manifests do not match")
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}
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// Ensure that the tag is listed.
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resp, err = http.Get(tagsURL)
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if err != nil {
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t.Fatalf("unexpected error getting unknown tags: %v", err)
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}
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defer resp.Body.Close()
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// Check that we get an unknown repository error when asking for tags
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checkResponse(t, "getting unknown manifest tags", resp, http.StatusOK)
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dec = json.NewDecoder(resp.Body)
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var tagsResponse tagsAPIResponse
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if err := dec.Decode(&tagsResponse); err != nil {
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t.Fatalf("unexpected error decoding error response: %v", err)
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}
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if tagsResponse.Name != imageName {
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t.Fatalf("tags name should match image name: %v != %v", tagsResponse.Name, imageName)
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}
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if len(tagsResponse.Tags) != 1 {
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t.Fatalf("expected some tags in response: %v", tagsResponse.Tags)
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}
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if tagsResponse.Tags[0] != tag {
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t.Fatalf("tag not as expected: %q != %q", tagsResponse.Tags[0], tag)
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}
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}
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type testEnv struct {
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pk libtrust.PrivateKey
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ctx context.Context
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config configuration.Configuration
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app *App
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server *httptest.Server
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builder *v2.URLBuilder
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}
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func newTestEnv(t *testing.T) *testEnv {
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config := configuration.Configuration{
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Storage: configuration.Storage{
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"inmemory": configuration.Parameters{},
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},
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}
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return newTestEnvWithConfig(t, &config)
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}
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func newTestEnvWithConfig(t *testing.T, config *configuration.Configuration) *testEnv {
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ctx := context.Background()
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app := NewApp(ctx, *config)
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server := httptest.NewServer(handlers.CombinedLoggingHandler(os.Stderr, app))
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builder, err := v2.NewURLBuilderFromString(server.URL + config.HTTP.Prefix)
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if err != nil {
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t.Fatalf("error creating url builder: %v", err)
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}
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pk, err := libtrust.GenerateECP256PrivateKey()
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if err != nil {
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t.Fatalf("unexpected error generating private key: %v", err)
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}
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return &testEnv{
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pk: pk,
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ctx: ctx,
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config: *config,
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app: app,
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server: server,
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builder: builder,
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}
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}
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func putManifest(t *testing.T, msg, url string, v interface{}) *http.Response {
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var body []byte
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if sm, ok := v.(*manifest.SignedManifest); ok {
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body = sm.Raw
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} else {
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var err error
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body, err = json.MarshalIndent(v, "", " ")
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if err != nil {
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t.Fatalf("unexpected error marshaling %v: %v", v, err)
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}
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}
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req, err := http.NewRequest("PUT", url, bytes.NewReader(body))
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if err != nil {
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t.Fatalf("error creating request for %s: %v", msg, err)
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}
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resp, err := http.DefaultClient.Do(req)
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if err != nil {
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t.Fatalf("error doing put request while %s: %v", msg, err)
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}
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return resp
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}
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func startPushLayer(t *testing.T, ub *v2.URLBuilder, name string) string {
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layerUploadURL, err := ub.BuildBlobUploadURL(name)
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if err != nil {
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t.Fatalf("unexpected error building layer upload url: %v", err)
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}
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resp, err := http.Post(layerUploadURL, "", nil)
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if err != nil {
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t.Fatalf("unexpected error starting layer push: %v", err)
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}
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defer resp.Body.Close()
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checkResponse(t, fmt.Sprintf("pushing starting layer push %v", name), resp, http.StatusAccepted)
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checkHeaders(t, resp, http.Header{
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"Location": []string{"*"},
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"Content-Length": []string{"0"},
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})
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return resp.Header.Get("Location")
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}
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// doPushLayer pushes the layer content returning the url on success returning
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// the response. If you're only expecting a successful response, use pushLayer.
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func doPushLayer(t *testing.T, ub *v2.URLBuilder, name string, dgst digest.Digest, uploadURLBase string, body io.Reader) (*http.Response, error) {
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u, err := url.Parse(uploadURLBase)
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if err != nil {
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t.Fatalf("unexpected error parsing pushLayer url: %v", err)
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}
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u.RawQuery = url.Values{
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"_state": u.Query()["_state"],
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"digest": []string{dgst.String()},
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}.Encode()
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uploadURL := u.String()
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// Just do a monolithic upload
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req, err := http.NewRequest("PUT", uploadURL, body)
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if err != nil {
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t.Fatalf("unexpected error creating new request: %v", err)
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}
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return http.DefaultClient.Do(req)
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}
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// pushLayer pushes the layer content returning the url on success.
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func pushLayer(t *testing.T, ub *v2.URLBuilder, name string, dgst digest.Digest, uploadURLBase string, body io.Reader) string {
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resp, err := doPushLayer(t, ub, name, dgst, uploadURLBase, body)
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if err != nil {
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t.Fatalf("unexpected error doing push layer request: %v", err)
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}
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defer resp.Body.Close()
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checkResponse(t, "putting monolithic chunk", resp, http.StatusCreated)
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expectedLayerURL, err := ub.BuildBlobURL(name, dgst)
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if err != nil {
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t.Fatalf("error building expected layer url: %v", err)
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}
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checkHeaders(t, resp, http.Header{
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"Location": []string{expectedLayerURL},
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"Content-Length": []string{"0"},
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})
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return resp.Header.Get("Location")
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}
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func checkResponse(t *testing.T, msg string, resp *http.Response, expectedStatus int) {
|
|
if resp.StatusCode != expectedStatus {
|
|
t.Logf("unexpected status %s: %v != %v", msg, resp.StatusCode, expectedStatus)
|
|
maybeDumpResponse(t, resp)
|
|
|
|
t.FailNow()
|
|
}
|
|
}
|
|
|
|
// checkBodyHasErrorCodes ensures the body is an error body and has the
|
|
// expected error codes, returning the error structure, the json slice and a
|
|
// count of the errors by code.
|
|
func checkBodyHasErrorCodes(t *testing.T, msg string, resp *http.Response, errorCodes ...v2.ErrorCode) (v2.Errors, []byte, map[v2.ErrorCode]int) {
|
|
p, err := ioutil.ReadAll(resp.Body)
|
|
if err != nil {
|
|
t.Fatalf("unexpected error reading body %s: %v", msg, err)
|
|
}
|
|
|
|
var errs v2.Errors
|
|
if err := json.Unmarshal(p, &errs); err != nil {
|
|
t.Fatalf("unexpected error decoding error response: %v", err)
|
|
}
|
|
|
|
if len(errs.Errors) == 0 {
|
|
t.Fatalf("expected errors in response")
|
|
}
|
|
|
|
// TODO(stevvooe): Shoot. The error setup is not working out. The content-
|
|
// type headers are being set after writing the status code.
|
|
// if resp.Header.Get("Content-Type") != "application/json; charset=utf-8" {
|
|
// t.Fatalf("unexpected content type: %v != 'application/json'",
|
|
// resp.Header.Get("Content-Type"))
|
|
// }
|
|
|
|
expected := map[v2.ErrorCode]struct{}{}
|
|
counts := map[v2.ErrorCode]int{}
|
|
|
|
// Initialize map with zeros for expected
|
|
for _, code := range errorCodes {
|
|
expected[code] = struct{}{}
|
|
counts[code] = 0
|
|
}
|
|
|
|
for _, err := range errs.Errors {
|
|
if _, ok := expected[err.Code]; !ok {
|
|
t.Fatalf("unexpected error code %v encountered during %s: %s ", err.Code, msg, string(p))
|
|
}
|
|
counts[err.Code]++
|
|
}
|
|
|
|
// Ensure that counts of expected errors were all non-zero
|
|
for code := range expected {
|
|
if counts[code] == 0 {
|
|
t.Fatalf("expected error code %v not encounterd during %s: %s", code, msg, string(p))
|
|
}
|
|
}
|
|
|
|
return errs, p, counts
|
|
}
|
|
|
|
func maybeDumpResponse(t *testing.T, resp *http.Response) {
|
|
if d, err := httputil.DumpResponse(resp, true); err != nil {
|
|
t.Logf("error dumping response: %v", err)
|
|
} else {
|
|
t.Logf("response:\n%s", string(d))
|
|
}
|
|
}
|
|
|
|
// matchHeaders checks that the response has at least the headers. If not, the
|
|
// test will fail. If a passed in header value is "*", any non-zero value will
|
|
// suffice as a match.
|
|
func checkHeaders(t *testing.T, resp *http.Response, headers http.Header) {
|
|
for k, vs := range headers {
|
|
if resp.Header.Get(k) == "" {
|
|
t.Fatalf("response missing header %q", k)
|
|
}
|
|
|
|
for _, v := range vs {
|
|
if v == "*" {
|
|
// Just ensure there is some value.
|
|
if len(resp.Header[k]) > 0 {
|
|
continue
|
|
}
|
|
}
|
|
|
|
for _, hv := range resp.Header[k] {
|
|
if hv != v {
|
|
t.Fatalf("header value not matched in response: %q != %q", hv, v)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|