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package client // import "github.com/docker/docker/client"
import (
"bytes"
"context"
"encoding/json"
"fmt"
"io"
"net/http"
"strings"
"testing"
"github.com/docker/docker/api/types"
registrytypes "github.com/docker/docker/api/types/registry"
"github.com/docker/docker/api/types/swarm"
"github.com/docker/docker/errdefs"
digest "github.com/opencontainers/go-digest"
v1 "github.com/opencontainers/image-spec/specs-go/v1"
"gotest.tools/v3/assert"
is "gotest.tools/v3/assert/cmp"
)
func TestServiceCreateError(t *testing.T) {
client := &Client{
client: newMockClient(errorMock(http.StatusInternalServerError, "Server error")),
}
_, err := client.ServiceCreate(context.Background(), swarm.ServiceSpec{}, types.ServiceCreateOptions{})
if !errdefs.IsSystem(err) {
t.Fatalf("expected a Server Error, got %[1]T: %[1]v", err)
}
}
func TestServiceCreate(t *testing.T) {
expectedURL := "/services/create"
client := &Client{
client: newMockClient(func(req *http.Request) (*http.Response, error) {
if !strings.HasPrefix(req.URL.Path, expectedURL) {
return nil, fmt.Errorf("Expected URL '%s', got '%s'", expectedURL, req.URL)
}
if req.Method != http.MethodPost {
return nil, fmt.Errorf("expected POST method, got %s", req.Method)
}
b, err := json.Marshal(types.ServiceCreateResponse{
ID: "service_id",
})
if err != nil {
return nil, err
}
return &http.Response{
StatusCode: http.StatusOK,
Body: io.NopCloser(bytes.NewReader(b)),
}, nil
}),
}
r, err := client.ServiceCreate(context.Background(), swarm.ServiceSpec{}, types.ServiceCreateOptions{})
if err != nil {
t.Fatal(err)
}
if r.ID != "service_id" {
t.Fatalf("expected `service_id`, got %s", r.ID)
}
}
func TestServiceCreateCompatiblePlatforms(t *testing.T) {
client := &Client{
version: "1.30",
client: newMockClient(func(req *http.Request) (*http.Response, error) {
if strings.HasPrefix(req.URL.Path, "/v1.30/services/create") {
var serviceSpec swarm.ServiceSpec
// check if the /distribution endpoint returned correct output
err := json.NewDecoder(req.Body).Decode(&serviceSpec)
if err != nil {
return nil, err
}
assert.Check(t, is.Equal("foobar:1.0@sha256:c0537ff6a5218ef531ece93d4984efc99bbf3f7497c0a7726c88e2bb7584dc96", serviceSpec.TaskTemplate.ContainerSpec.Image))
assert.Check(t, is.Len(serviceSpec.TaskTemplate.Placement.Platforms, 1))
p := serviceSpec.TaskTemplate.Placement.Platforms[0]
b, err := json.Marshal(types.ServiceCreateResponse{
ID: "service_" + p.OS + "_" + p.Architecture,
})
if err != nil {
return nil, err
}
return &http.Response{
StatusCode: http.StatusOK,
Body: io.NopCloser(bytes.NewReader(b)),
}, nil
} else if strings.HasPrefix(req.URL.Path, "/v1.30/distribution/") {
b, err := json.Marshal(registrytypes.DistributionInspect{
Descriptor: v1.Descriptor{
Digest: "sha256:c0537ff6a5218ef531ece93d4984efc99bbf3f7497c0a7726c88e2bb7584dc96",
},
Platforms: []v1.Platform{
{
Architecture: "amd64",
OS: "linux",
},
},
})
if err != nil {
return nil, err
}
return &http.Response{
StatusCode: http.StatusOK,
Body: io.NopCloser(bytes.NewReader(b)),
}, nil
} else {
return nil, fmt.Errorf("unexpected URL '%s'", req.URL.Path)
}
}),
}
spec := swarm.ServiceSpec{TaskTemplate: swarm.TaskSpec{ContainerSpec: &swarm.ContainerSpec{Image: "foobar:1.0"}}}
r, err := client.ServiceCreate(context.Background(), spec, types.ServiceCreateOptions{QueryRegistry: true})
assert.Check(t, err)
assert.Check(t, is.Equal("service_linux_amd64", r.ID))
}
func TestServiceCreateDigestPinning(t *testing.T) {
dgst := "sha256:c0537ff6a5218ef531ece93d4984efc99bbf3f7497c0a7726c88e2bb7584dc96"
dgstAlt := "sha256:37ffbf3f7497c07584dc9637ffbf3f7497c0758c0537ffbf3f7497c0c88e2bb7"
serviceCreateImage := ""
pinByDigestTests := []struct {
img string // input image provided by the user
expected string // expected image after digest pinning
}{
// default registry returns familiar string
{"docker.io/library/alpine", "alpine:latest@" + dgst},
// provided tag is preserved and digest added
{"alpine:edge", "alpine:edge@" + dgst},
// image with provided alternative digest remains unchanged
{"alpine@" + dgstAlt, "alpine@" + dgstAlt},
// image with provided tag and alternative digest remains unchanged
{"alpine:edge@" + dgstAlt, "alpine:edge@" + dgstAlt},
// image on alternative registry does not result in familiar string
{"alternate.registry/library/alpine", "alternate.registry/library/alpine:latest@" + dgst},
// unresolvable image does not get a digest
{"cannotresolve", "cannotresolve:latest"},
}
client := &Client{
version: "1.30",
client: newMockClient(func(req *http.Request) (*http.Response, error) {
if strings.HasPrefix(req.URL.Path, "/v1.30/services/create") {
// reset and set image received by the service create endpoint
serviceCreateImage = ""
var service swarm.ServiceSpec
if err := json.NewDecoder(req.Body).Decode(&service); err != nil {
return nil, fmt.Errorf("could not parse service create request")
}
serviceCreateImage = service.TaskTemplate.ContainerSpec.Image
b, err := json.Marshal(types.ServiceCreateResponse{
ID: "service_id",
})
if err != nil {
return nil, err
}
return &http.Response{
StatusCode: http.StatusOK,
Body: io.NopCloser(bytes.NewReader(b)),
}, nil
} else if strings.HasPrefix(req.URL.Path, "/v1.30/distribution/cannotresolve") {
// unresolvable image
return nil, fmt.Errorf("cannot resolve image")
} else if strings.HasPrefix(req.URL.Path, "/v1.30/distribution/") {
// resolvable images
b, err := json.Marshal(registrytypes.DistributionInspect{
Descriptor: v1.Descriptor{
Digest: digest.Digest(dgst),
},
})
if err != nil {
return nil, err
}
return &http.Response{
StatusCode: http.StatusOK,
Body: io.NopCloser(bytes.NewReader(b)),
}, nil
}
return nil, fmt.Errorf("unexpected URL '%s'", req.URL.Path)
}),
}
// run pin by digest tests
for _, p := range pinByDigestTests {
r, err := client.ServiceCreate(context.Background(), swarm.ServiceSpec{
TaskTemplate: swarm.TaskSpec{
ContainerSpec: &swarm.ContainerSpec{
Image: p.img,
},
},
}, types.ServiceCreateOptions{QueryRegistry: true})
if err != nil {
t.Fatal(err)
}
if r.ID != "service_id" {
t.Fatalf("expected `service_id`, got %s", r.ID)
}
if p.expected != serviceCreateImage {
t.Fatalf("expected image %s, got %s", p.expected, serviceCreateImage)
}
}
}
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