package client // import "github.com/docker/docker/client" import ( "bytes" "context" "encoding/json" "fmt" "io/ioutil" "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/opencontainers/go-digest" "github.com/opencontainers/image-spec/specs-go/v1" "gotest.tools/assert" is "gotest.tools/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 err == nil || err.Error() != "Error response from daemon: Server error" { t.Fatalf("expected a Server Error, got %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 != "POST" { 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: ioutil.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: ioutil.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: ioutil.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: ioutil.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: ioutil.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) } } }