Allow multiple apps in manifest

Also adjust behaviour to create the web process when applying an manifest
or creating an app via the POST /v3/apps endpoint.

Issue: #1661
Co-authored-by: Giuseppe Capizzi <gcapizzi@vmware.com>

api/actions/manifest.go

@@ -45,20 +45,25 @@ func NewManifest(domainRepo shared.CFDomainRepository, defaultDomainName string,
 	}
 }
 
-func (a *Manifest) Apply(ctx context.Context, authInfo authorization.Info, spaceGUID string, manifest payloads.Manifest) error {
+func (a *Manifest) Apply(ctx context.Context, authInfo authorization.Info, spaceGUID string, manifesto payloads.Manifest) error {
 	err := a.ensureDefaultDomainConfigured(ctx, authInfo)
 	if err != nil {
 		return err
 	}
 
-	appInfo := manifest.Applications[0]
-	appState, err := a.stateCollector.CollectState(ctx, authInfo, appInfo.Name, spaceGUID)
-	if err != nil {
-		return err
+	for _, appInfo := range manifesto.Applications {
+		appState, err := a.stateCollector.CollectState(ctx, authInfo, appInfo.Name, spaceGUID)
+		if err != nil {
+			return err
+		}
+		appInfo = a.normalizer.Normalize(appInfo, appState)
+		err = a.applier.Apply(ctx, authInfo, spaceGUID, appInfo, appState)
+		if err != nil {
+			return err
+		}
 	}
-	appInfo = a.normalizer.Normalize(appInfo, appState)
 
-	return a.applier.Apply(ctx, authInfo, spaceGUID, appInfo, appState)
+	return nil
 }
 
 func (a *Manifest) ensureDefaultDomainConfigured(ctx context.Context, authInfo authorization.Info) error {

api/actions/manifest/normalizer.go

@@ -73,15 +73,14 @@ func (n Normalizer) normalizeProcesses(appInfo payloads.ManifestApplication, app
 			break
 		}
 	}
+	if webProc == nil {
+		processes = append(processes, payloads.ManifestApplicationProcess{Type: korifiv1alpha1.ProcessTypeWeb})
+		webProc = &processes[len(processes)-1]
+	}
 
 	if appInfo.Memory != nil || appInfo.DiskQuota != nil || appInfo.Instances != nil || appInfo.Command != nil ||
 		appInfo.HealthCheckHTTPEndpoint != nil || appInfo.HealthCheckType != nil || appInfo.HealthCheckInvocationTimeout != nil || appInfo.Timeout != nil {
 
-		if webProc == nil {
-			processes = append(processes, payloads.ManifestApplicationProcess{Type: korifiv1alpha1.ProcessTypeWeb})
-			webProc = &processes[len(processes)-1]
-		}
-
 		webProc.Memory = procValIfSet(appInfo.Memory, webProc.Memory)
 		webProc.DiskQuota = procValIfSet(appInfo.DiskQuota, webProc.DiskQuota)
 		webProc.Instances = procValIfSet(appInfo.Instances, webProc.Instances)

api/actions/manifest/normalizer_test.go

@@ -117,8 +117,15 @@ var _ = Describe("Normalizer", func() {
 			}
 		})
 
+		It("always creates a web process", func() {
+			Expect(normalizedAppInfo.Processes).To(ContainElement(payloads.ManifestApplicationProcess{Type: "web"}))
+		})
+
 		It("preserves existing processes", func() {
-			Expect(normalizedAppInfo.Processes).To(ConsistOf(payloads.ManifestApplicationProcess{Type: "bob"}))
+			Expect(normalizedAppInfo.Processes).To(ConsistOf(
+				payloads.ManifestApplicationProcess{Type: "web"},
+				payloads.ManifestApplicationProcess{Type: "bob"},
+			))
 		})
 
 		DescribeTable("when app-level values are provided",
@@ -159,7 +166,7 @@ var _ = Describe("Normalizer", func() {
 				Expect(webProc.Timeout).To(Equal(effective.Timeout))
 			},
 
-			// without an existing web process
+			// without an explicit web process in the manifest
 			Entry("app-level command only",
 				appParams{Command: tools.PtrTo("echo boo")}, prcParams{},
 				expParams{Command: tools.PtrTo("echo boo")}),
@@ -188,7 +195,7 @@ var _ = Describe("Normalizer", func() {
 				appParams{Memory: tools.PtrTo("512M"), DiskQuota: tools.PtrTo("2G")}, prcParams{},
 				expParams{Memory: tools.PtrTo("512M"), DiskQuota: tools.PtrTo("2G")}),
 
-			// with an existing web process without the given value set
+			// with an explicit web process in the manifest, but without the app-level value set
 			Entry("empty proc with app memory",
 				appParams{Memory: tools.PtrTo("512M")},
 				prcParams{Instances: tools.PtrTo(3)},

api/actions/manifest_test.go

@@ -21,12 +21,10 @@ var _ = Describe("ApplyManifest", func() {
 		manifestAction *actions.Manifest
 		applyErr       error
 
-		domainRepository   *reposfake.CFDomainRepository
-		stateCollector     *fake.StateCollector
-		normalizer         *fake.Normalizer
-		applier            *fake.Applier
-		appState           manifest.AppState
-		normalizedManifest payloads.ManifestApplication
+		domainRepository *reposfake.CFDomainRepository
+		stateCollector   *fake.StateCollector
+		normalizer       *fake.Normalizer
+		applier          *fake.Applier
 
 		appManifest payloads.Manifest
 	)
@@ -37,22 +35,31 @@ var _ = Describe("ApplyManifest", func() {
 		normalizer = new(fake.Normalizer)
 		applier = new(fake.Applier)
 
-		appState = manifest.AppState{
+		stateCollector.CollectStateReturnsOnCall(0, manifest.AppState{
 			App: repositories.AppRecord{
-				GUID: "app-guid",
-				Name: "app-name",
+				GUID: "app1-guid",
+				Name: "app1",
 			},
-		}
-		stateCollector.CollectStateReturns(appState, nil)
+		}, nil)
+		stateCollector.CollectStateReturnsOnCall(1, manifest.AppState{
+			App: repositories.AppRecord{
+				GUID: "app2-guid",
+				Name: "app2",
+			},
+		}, nil)
 
-		normalizedManifest = payloads.ManifestApplication{
-			Name: "app-name",
-		}
-		normalizer.NormalizeReturns(normalizedManifest)
+		normalizer.NormalizeReturnsOnCall(0, payloads.ManifestApplication{
+			Name: "normalized-app1",
+		})
+		normalizer.NormalizeReturnsOnCall(1, payloads.ManifestApplication{
+			Name: "normalized-app2",
+		})
 
 		appManifest = payloads.Manifest{
 			Applications: []payloads.ManifestApplication{{
-				Name: "app-name",
+				Name: "app1",
+			}, {
+				Name: "app2",
 			}},
 		}
 
@@ -63,14 +70,38 @@ var _ = Describe("ApplyManifest", func() {
 		applyErr = manifestAction.Apply(context.Background(), authorization.Info{}, "space-guid", appManifest)
 	})
 
-	It("succeeds", func() {
+	It("normalizes the manifest and then applies it", func() {
 		Expect(applyErr).NotTo(HaveOccurred())
-	})
 
-	It("ensures the default domain is configured", func() {
 		Expect(domainRepository.GetDomainByNameCallCount()).To(Equal(1))
 		_, _, actualDomain := domainRepository.GetDomainByNameArgsForCall(0)
 		Expect(actualDomain).To(Equal("my.domain"))
+
+		Expect(stateCollector.CollectStateCallCount()).To(Equal(2))
+		_, _, actualAppName, actualSpaceGUID := stateCollector.CollectStateArgsForCall(0)
+		Expect(actualAppName).To(Equal("app1"))
+		Expect(actualSpaceGUID).To(Equal("space-guid"))
+		_, _, actualAppName, actualSpaceGUID = stateCollector.CollectStateArgsForCall(1)
+		Expect(actualAppName).To(Equal("app2"))
+		Expect(actualSpaceGUID).To(Equal("space-guid"))
+
+		Expect(normalizer.NormalizeCallCount()).To(Equal(2))
+		actualAppInManifest, actualState := normalizer.NormalizeArgsForCall(0)
+		Expect(actualAppInManifest.Name).To(Equal("app1"))
+		Expect(actualState.App.GUID).To(Equal("app1-guid"))
+		actualAppInManifest, actualState = normalizer.NormalizeArgsForCall(1)
+		Expect(actualAppInManifest.Name).To(Equal("app2"))
+		Expect(actualState.App.GUID).To(Equal("app2-guid"))
+
+		Expect(applier.ApplyCallCount()).To(Equal(2))
+		_, _, actualSpaceGUID, actualAppInManifest, actualState = applier.ApplyArgsForCall(0)
+		Expect(actualSpaceGUID).To(Equal("space-guid"))
+		Expect(actualAppInManifest.Name).To(Equal("normalized-app1"))
+		Expect(actualState.App.GUID).To(Equal("app1-guid"))
+		_, _, actualSpaceGUID, actualAppInManifest, actualState = applier.ApplyArgsForCall(1)
+		Expect(actualSpaceGUID).To(Equal("space-guid"))
+		Expect(actualAppInManifest.Name).To(Equal("normalized-app2"))
+		Expect(actualState.App.GUID).To(Equal("app2-guid"))
 	})
 
 	When("the default domain does not exist", func() {
@@ -93,38 +124,16 @@ var _ = Describe("ApplyManifest", func() {
 		})
 	})
 
-	It("collects the app state", func() {
-		Expect(stateCollector.CollectStateCallCount()).To(Equal(1))
-		_, _, actualAppName, actualSpaceGUID := stateCollector.CollectStateArgsForCall(0)
-		Expect(actualAppName).To(Equal("app-name"))
-		Expect(actualSpaceGUID).To(Equal("space-guid"))
-	})
-
 	When("collecting the app state fails", func() {
 		BeforeEach(func() {
-			stateCollector.CollectStateReturns(manifest.AppState{}, errors.New("collect-state-err"))
+			stateCollector.CollectStateReturnsOnCall(0, manifest.AppState{}, errors.New("collect-state-err"))
 		})
 
 		It("returns the error", func() {
 			Expect(applyErr).To(MatchError("collect-state-err"))
 		})
 	})
 
-	It("normalizes the manifest", func() {
-		Expect(normalizer.NormalizeCallCount()).To(Equal(1))
-		actualAppInManifest, actualState := normalizer.NormalizeArgsForCall(0)
-		Expect(actualAppInManifest.Name).To(Equal("app-name"))
-		Expect(actualState.App.GUID).To(Equal("app-guid"))
-	})
-
-	It("applies the normalized manifest", func() {
-		Expect(applier.ApplyCallCount()).To(Equal(1))
-		_, _, actualSpaceGUID, actualAppInManifest, actualState := applier.ApplyArgsForCall(0)
-		Expect(actualSpaceGUID).To(Equal("space-guid"))
-		Expect(actualAppInManifest.Name).To(Equal("app-name"))
-		Expect(actualState.App.GUID).To(Equal("app-guid"))
-	})
-
 	When("applying the normalized manifest fails", func() {
 		BeforeEach(func() {
 			applier.ApplyReturns(errors.New("apply-err"))

api/handlers/app.go

@@ -15,6 +15,7 @@ import (
 	"code.cloudfoundry.org/korifi/api/presenter"
 	"code.cloudfoundry.org/korifi/api/repositories"
 	"code.cloudfoundry.org/korifi/api/routing"
+	korifiv1alpha1 "code.cloudfoundry.org/korifi/controllers/api/v1alpha1"
 	"code.cloudfoundry.org/korifi/tools"
 
 	"github.com/go-logr/logr"
@@ -131,6 +132,15 @@ func (h *App) create(r *http.Request) (*routing.Response, error) {
 		return nil, apierrors.LogAndReturn(logger, err, "Failed to create app", "App Name", payload.Name)
 	}
 
+	err = h.processRepo.CreateProcess(r.Context(), authInfo, repositories.CreateProcessMessage{
+		AppGUID:   appRecord.GUID,
+		SpaceGUID: spaceGUID,
+		Type:      korifiv1alpha1.ProcessTypeWeb,
+	})
+	if err != nil {
+		return nil, apierrors.LogAndReturn(logger, err, "Failed to create web process", "App Name", payload.Name)
+	}
+
 	return routing.NewResponse(http.StatusCreated).WithBody(presenter.ForApp(appRecord, h.serverURL)), nil
 }
 

api/handlers/app_test.go

@@ -316,6 +316,27 @@ var _ = Describe("App", func() {
                 }`, defaultServerURL, appGUID, spaceGUID)), "Response body matches response:")
 		})
 
+		It("creates the `web` process", func() {
+			Expect(processRepo.CreateProcessCallCount()).To(Equal(1))
+			_, actualAuthInfo, actualMsg := processRepo.CreateProcessArgsForCall(0)
+			Expect(actualAuthInfo).To(Equal(authInfo))
+			Expect(actualMsg).To(Equal(repositories.CreateProcessMessage{
+				AppGUID:   appGUID,
+				SpaceGUID: spaceGUID,
+				Type:      "web",
+			}))
+		})
+
+		When("creating the process fails", func() {
+			BeforeEach(func() {
+				processRepo.CreateProcessReturns(errors.New("create-process-err"))
+			})
+
+			It("returns an error", func() {
+				expectUnknownError()
+			})
+		})
+
 		When("creating the app fails", func() {
 			BeforeEach(func() {
 				appRepo.CreateAppReturns(repositories.AppRecord{}, errors.New("create-app-err"))

api/handlers/process.go

@@ -31,6 +31,7 @@ type CFProcessRepository interface {
 	ListProcesses(context.Context, authorization.Info, repositories.ListProcessesMessage) ([]repositories.ProcessRecord, error)
 	GetProcessByAppTypeAndSpace(context.Context, authorization.Info, string, string, string) (repositories.ProcessRecord, error)
 	PatchProcess(context.Context, authorization.Info, repositories.PatchProcessMessage) (repositories.ProcessRecord, error)
+	CreateProcess(context.Context, authorization.Info, repositories.CreateProcessMessage) error
 }
 
 //counterfeiter:generate -o fake -fake-name ProcessScaler . ProcessScaler

api/payloads/manifest.go

@@ -10,7 +10,7 @@ import (
 
 type Manifest struct {
 	Version      int                   `yaml:"version"`
-	Applications []ManifestApplication `yaml:"applications" validate:"max=1,dive"`
+	Applications []ManifestApplication `yaml:"applications"`
 }
 
 type ManifestApplication struct {