detached 4790f72

fix(container): skip redundant deploy when container already runs the same image

commit
4790f72d61e4be33ee4b19596e974a2fa4ef52c9
author
bnema · · 2026-02-09 20:41 UTC
parent
e057b28
signature
GPG VerifiedCD88F9E564E0102646FB6077A1A07C7C7C3E349D · arch-gpg Verified for the committer email
2 files · +270 -4
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M internal/usecase/container/service.go +42 -0
@@ -239,6 +239,16 @@ func (s *Service) Deploy(ctx context.Context, route domain.Route) (*domain.Conta
239239 return nil, err
240240 }
241241
242+ // Skip redundant deploy: if the existing container is already running
243+ // the exact same image (by Docker image ID), return it immediately.
244+ // This prevents the double-deploy caused by the event-based deploy
245+ // (triggered by image.pushed) racing with the explicit CLI deploy call.
246+ if hasExisting && existing.ImageID != "" {
247+ if skip, container := s.skipRedundantDeploy(ctx, existing, resources.actualImageRef); skip {
248+ return container, nil
249+ }
250+ }
251+
242252 newContainer, err := s.createStartedContainer(ctx, route, existing, resources)
243253 if err != nil {
244254 return nil, err
@@ -261,6 +271,38 @@ func (s *Service) Deploy(ctx context.Context, route domain.Route) (*domain.Conta
261271 return newContainer, nil
262272 }
263273
274+// skipRedundantDeploy checks whether the existing container is already running
275+// the same image (by Docker image ID) as the one we are about to deploy.
276+// When a push triggers both an event-based deploy and an explicit CLI deploy,
277+// the second one arrives after the first has already completed; this avoids
278+// a full redundant create-start-readiness cycle.
279+func (s *Service) skipRedundantDeploy(ctx context.Context, existing *domain.Container, actualImageRef string) (bool, *domain.Container) {
280+ log := zerowrap.FromCtx(ctx)
281+
282+ newImageID, err := s.runtime.GetImageID(ctx, actualImageRef)
283+ if err != nil {
284+ log.Debug().Err(err).Msg("cannot resolve image ID for redundancy check, proceeding with deploy")
285+ return false, nil
286+ }
287+
288+ if existing.ImageID != newImageID {
289+ return false, nil
290+ }
291+
292+ // Verify the container is actually still running before skipping.
293+ running, err := s.runtime.IsContainerRunning(ctx, existing.ID)
294+ if err != nil || !running {
295+ return false, nil
296+ }
297+
298+ log.Info().
299+ Str("container_id", existing.ID).
300+ Str("image_id", newImageID).
301+ Msg("skipping redundant deploy: container already running this image")
302+
303+ return true, existing
304+}
305+
264306 type deployResources struct {
265307 networkName string
266308 actualImageRef string
@@ -239,6 +239,16 @@ func (s *Service) Deploy(ctx context.Context, route domain.Route) (*domain.Conta
239 return nil, err239 return nil, err
240 }240 }
241 241
242+ // Skip redundant deploy: if the existing container is already running
243+ // the exact same image (by Docker image ID), return it immediately.
244+ // This prevents the double-deploy caused by the event-based deploy
245+ // (triggered by image.pushed) racing with the explicit CLI deploy call.
246+ if hasExisting && existing.ImageID != "" {
247+ if skip, container := s.skipRedundantDeploy(ctx, existing, resources.actualImageRef); skip {
248+ return container, nil
249+ }
250+ }
251+
242 newContainer, err := s.createStartedContainer(ctx, route, existing, resources)252 newContainer, err := s.createStartedContainer(ctx, route, existing, resources)
243 if err != nil {253 if err != nil {
244 return nil, err254 return nil, err
@@ -261,6 +271,38 @@ func (s *Service) Deploy(ctx context.Context, route domain.Route) (*domain.Conta
261 return newContainer, nil271 return newContainer, nil
262 }272 }
263 273
274+// skipRedundantDeploy checks whether the existing container is already running
275+// the same image (by Docker image ID) as the one we are about to deploy.
276+// When a push triggers both an event-based deploy and an explicit CLI deploy,
277+// the second one arrives after the first has already completed; this avoids
278+// a full redundant create-start-readiness cycle.
279+func (s *Service) skipRedundantDeploy(ctx context.Context, existing *domain.Container, actualImageRef string) (bool, *domain.Container) {
280+ log := zerowrap.FromCtx(ctx)
281+
282+ newImageID, err := s.runtime.GetImageID(ctx, actualImageRef)
283+ if err != nil {
284+ log.Debug().Err(err).Msg("cannot resolve image ID for redundancy check, proceeding with deploy")
285+ return false, nil
286+ }
287+
288+ if existing.ImageID != newImageID {
289+ return false, nil
290+ }
291+
292+ // Verify the container is actually still running before skipping.
293+ running, err := s.runtime.IsContainerRunning(ctx, existing.ID)
294+ if err != nil || !running {
295+ return false, nil
296+ }
297+
298+ log.Info().
299+ Str("container_id", existing.ID).
300+ Str("image_id", newImageID).
301+ Msg("skipping redundant deploy: container already running this image")
302+
303+ return true, existing
304+}
305+
264 type deployResources struct {306 type deployResources struct {
265 networkName string307 networkName string
266 actualImageRef string308 actualImageRef string
M internal/usecase/container/service_test.go +228 -4
@@ -313,11 +313,64 @@ func TestService_Deploy_ReplacesExistingContainer(t *testing.T) {
313313
314314 assert.NoError(t, err)
315315 assert.Equal(t, "new-container", result.ID)
316+}
316317
317- // Old container should be replaced
318- tracked, exists := svc.Get(ctx, "test.example.com")
319- assert.True(t, exists)
320- assert.Equal(t, "new-container", tracked.ID)
318+func TestService_Deploy_SkipRedundantDeploy_GetImageIDError(t *testing.T) {
319+ runtime := mocks.NewMockContainerRuntime(t)
320+ envLoader := mocks.NewMockEnvLoader(t)
321+ eventBus := mocks.NewMockEventPublisher(t)
322+
323+ config := Config{
324+ ReadinessDelay: time.Millisecond,
325+ DrainDelay: time.Millisecond,
326+ }
327+ svc := NewService(runtime, envLoader, eventBus, nil, config)
328+ ctx := testContext()
329+
330+ // Existing container has ImageID, but GetImageID will fail
331+ existingContainer := &domain.Container{
332+ ID: "existing-container",
333+ Name: "gordon-test.example.com",
334+ Image: "myapp:latest",
335+ ImageID: "sha256:abc123",
336+ Status: "running",
337+ }
338+ svc.containers["test.example.com"] = existingContainer
339+
340+ route := domain.Route{
341+ Domain: "test.example.com",
342+ Image: "myapp:latest",
343+ }
344+
345+ // prepareDeployResources
346+ runtime.EXPECT().ListContainers(mock.Anything, true).Return([]*domain.Container{}, nil)
347+ runtime.EXPECT().ListImages(mock.Anything).Return([]string{"myapp:latest"}, nil)
348+ runtime.EXPECT().GetImageExposedPorts(mock.Anything, "myapp:latest").Return([]int{8080}, nil)
349+ envLoader.EXPECT().LoadEnv(mock.Anything, "test.example.com").Return([]string{}, nil)
350+ runtime.EXPECT().InspectImageEnv(mock.Anything, "myapp:latest").Return([]string{}, nil)
351+
352+ // GetImageID fails => deploy proceeds normally (graceful degradation)
353+ runtime.EXPECT().GetImageID(mock.Anything, "myapp:latest").Return("", errors.New("image inspect failed"))
354+
355+ // Full deploy proceeds despite the error
356+ newContainer := &domain.Container{ID: "new-container", Name: "gordon-test.example.com-new", Status: "created"}
357+ runtime.EXPECT().CreateContainer(mock.Anything, mock.AnythingOfType("*domain.ContainerConfig")).Return(newContainer, nil)
358+ runtime.EXPECT().StartContainer(mock.Anything, "new-container").Return(nil)
359+ runtime.EXPECT().IsContainerRunning(mock.Anything, "new-container").Return(true, nil).Times(2)
360+ runtime.EXPECT().InspectContainer(mock.Anything, "new-container").Return(&domain.Container{
361+ ID: "new-container", Status: "running",
362+ }, nil)
363+ eventBus.EXPECT().Publish(domain.EventContainerDeployed, mock.AnythingOfType("*domain.ContainerEventPayload")).Return(nil)
364+
365+ // Old container is finalized
366+ runtime.EXPECT().StopContainer(mock.Anything, "existing-container").Return(nil)
367+ runtime.EXPECT().RemoveContainer(mock.Anything, "existing-container", true).Return(nil)
368+ runtime.EXPECT().RenameContainer(mock.Anything, "new-container", "gordon-test.example.com").Return(nil)
369+
370+ result, err := svc.Deploy(ctx, route)
371+
372+ assert.NoError(t, err)
373+ assert.Equal(t, "new-container", result.ID)
321374 }
322375
323376 func TestService_Deploy_WithNetworkIsolation(t *testing.T) {
@@ -2003,3 +2056,174 @@ func TestService_Deploy_NilCacheInvalidator(t *testing.T) {
20032056 assert.NoError(t, err)
20042057 assert.Equal(t, "new-container", result.ID)
20052058 }
2059+
2060+func TestService_Deploy_SkipsRedundantDeploy(t *testing.T) {
2061+ runtime := mocks.NewMockContainerRuntime(t)
2062+ envLoader := mocks.NewMockEnvLoader(t)
2063+ eventBus := mocks.NewMockEventPublisher(t)
2064+
2065+ config := Config{
2066+ ReadinessDelay: time.Millisecond,
2067+ DrainDelay: time.Millisecond,
2068+ }
2069+ svc := NewService(runtime, envLoader, eventBus, nil, config)
2070+ ctx := testContext()
2071+
2072+ // Pre-populate with existing container that has an ImageID (set by InspectContainer).
2073+ // This simulates the first deploy (from image.pushed event) having already completed.
2074+ existingContainer := &domain.Container{
2075+ ID: "existing-container",
2076+ Name: "gordon-test.example.com",
2077+ Image: "myapp:latest",
2078+ ImageID: "sha256:abc123",
2079+ Status: "running",
2080+ }
2081+ svc.containers["test.example.com"] = existingContainer
2082+
2083+ route := domain.Route{
2084+ Domain: "test.example.com",
2085+ Image: "myapp:latest",
2086+ }
2087+
2088+ // prepareDeployResources will run: orphan cleanup, image pull, etc.
2089+ runtime.EXPECT().ListContainers(mock.Anything, true).Return([]*domain.Container{}, nil)
2090+ runtime.EXPECT().ListImages(mock.Anything).Return([]string{"myapp:latest"}, nil)
2091+ runtime.EXPECT().GetImageExposedPorts(mock.Anything, "myapp:latest").Return([]int{8080}, nil)
2092+ envLoader.EXPECT().LoadEnv(mock.Anything, "test.example.com").Return([]string{}, nil)
2093+ runtime.EXPECT().InspectImageEnv(mock.Anything, "myapp:latest").Return([]string{}, nil)
2094+
2095+ // skipRedundantDeploy: resolve image ID and compare with existing container
2096+ runtime.EXPECT().GetImageID(mock.Anything, "myapp:latest").Return("sha256:abc123", nil)
2097+ runtime.EXPECT().IsContainerRunning(mock.Anything, "existing-container").Return(true, nil)
2098+
2099+ // No CreateContainer, StartContainer, or readiness calls should happen
2100+
2101+ result, err := svc.Deploy(ctx, route)
2102+
2103+ assert.NoError(t, err)
2104+ assert.NotNil(t, result)
2105+ assert.Equal(t, "existing-container", result.ID)
2106+
2107+ // Container should still be tracked
2108+ tracked, exists := svc.Get(ctx, "test.example.com")
2109+ assert.True(t, exists)
2110+ assert.Equal(t, "existing-container", tracked.ID)
2111+}
2112+
2113+func TestService_Deploy_DoesNotSkipWhenImageIDDiffers(t *testing.T) {
2114+ runtime := mocks.NewMockContainerRuntime(t)
2115+ envLoader := mocks.NewMockEnvLoader(t)
2116+ eventBus := mocks.NewMockEventPublisher(t)
2117+ cacheInvalidator := mocks.NewMockProxyCacheInvalidator(t)
2118+
2119+ config := Config{
2120+ ReadinessDelay: time.Millisecond,
2121+ DrainDelay: time.Millisecond,
2122+ }
2123+ svc := NewService(runtime, envLoader, eventBus, nil, config)
2124+ svc.SetProxyCacheInvalidator(cacheInvalidator)
2125+ ctx := testContext()
2126+
2127+ // Existing container with a DIFFERENT image ID than what's being deployed
2128+ existingContainer := &domain.Container{
2129+ ID: "old-container",
2130+ Name: "gordon-test.example.com",
2131+ Image: "myapp:latest",
2132+ ImageID: "sha256:old-image",
2133+ Status: "running",
2134+ }
2135+ svc.containers["test.example.com"] = existingContainer
2136+
2137+ route := domain.Route{
2138+ Domain: "test.example.com",
2139+ Image: "myapp:latest",
2140+ }
2141+
2142+ // prepareDeployResources
2143+ runtime.EXPECT().ListContainers(mock.Anything, true).Return([]*domain.Container{}, nil)
2144+ runtime.EXPECT().ListImages(mock.Anything).Return([]string{"myapp:latest"}, nil)
2145+ runtime.EXPECT().GetImageExposedPorts(mock.Anything, "myapp:latest").Return([]int{8080}, nil)
2146+ envLoader.EXPECT().LoadEnv(mock.Anything, "test.example.com").Return([]string{}, nil)
2147+ runtime.EXPECT().InspectImageEnv(mock.Anything, "myapp:latest").Return([]string{}, nil)
2148+
2149+ // skipRedundantDeploy: image IDs differ, so deploy proceeds
2150+ runtime.EXPECT().GetImageID(mock.Anything, "myapp:latest").Return("sha256:new-image", nil)
2151+
2152+ // Full deploy proceeds
2153+ newContainer := &domain.Container{ID: "new-container", Name: "gordon-test.example.com-new", Status: "created"}
2154+ runtime.EXPECT().CreateContainer(mock.Anything, mock.AnythingOfType("*domain.ContainerConfig")).Return(newContainer, nil)
2155+ runtime.EXPECT().StartContainer(mock.Anything, "new-container").Return(nil)
2156+ runtime.EXPECT().IsContainerRunning(mock.Anything, "new-container").Return(true, nil).Times(2)
2157+ runtime.EXPECT().InspectContainer(mock.Anything, "new-container").Return(&domain.Container{
2158+ ID: "new-container", Status: "running",
2159+ }, nil)
2160+ eventBus.EXPECT().Publish(domain.EventContainerDeployed, mock.AnythingOfType("*domain.ContainerEventPayload")).Return(nil)
2161+ cacheInvalidator.EXPECT().InvalidateTarget(mock.Anything, "test.example.com").Return()
2162+ runtime.EXPECT().StopContainer(mock.Anything, "old-container").Return(nil)
2163+ runtime.EXPECT().RemoveContainer(mock.Anything, "old-container", true).Return(nil)
2164+ runtime.EXPECT().RenameContainer(mock.Anything, "new-container", "gordon-test.example.com").Return(nil)
2165+
2166+ result, err := svc.Deploy(ctx, route)
2167+
2168+ assert.NoError(t, err)
2169+ assert.Equal(t, "new-container", result.ID)
2170+}
2171+
2172+func TestService_Deploy_SkipRedundantDeploy_ContainerNotRunning(t *testing.T) {
2173+ runtime := mocks.NewMockContainerRuntime(t)
2174+ envLoader := mocks.NewMockEnvLoader(t)
2175+ eventBus := mocks.NewMockEventPublisher(t)
2176+
2177+ config := Config{
2178+ ReadinessDelay: time.Millisecond,
2179+ DrainDelay: time.Millisecond,
2180+ }
2181+ svc := NewService(runtime, envLoader, eventBus, nil, config)
2182+ ctx := testContext()
2183+
2184+ // Existing container has same image ID but is NOT running (crashed)
2185+ existingContainer := &domain.Container{
2186+ ID: "existing-container",
2187+ Name: "gordon-test.example.com",
2188+ Image: "myapp:latest",
2189+ ImageID: "sha256:abc123",
2190+ Status: "exited",
2191+ }
2192+ svc.containers["test.example.com"] = existingContainer
2193+
2194+ route := domain.Route{
2195+ Domain: "test.example.com",
2196+ Image: "myapp:latest",
2197+ }
2198+
2199+ // prepareDeployResources
2200+ runtime.EXPECT().ListContainers(mock.Anything, true).Return([]*domain.Container{}, nil)
2201+ runtime.EXPECT().ListImages(mock.Anything).Return([]string{"myapp:latest"}, nil)
2202+ runtime.EXPECT().GetImageExposedPorts(mock.Anything, "myapp:latest").Return([]int{8080}, nil)
2203+ envLoader.EXPECT().LoadEnv(mock.Anything, "test.example.com").Return([]string{}, nil)
2204+ runtime.EXPECT().InspectImageEnv(mock.Anything, "myapp:latest").Return([]string{}, nil)
2205+
2206+ // skipRedundantDeploy: same image ID but container not running => proceed with deploy
2207+ runtime.EXPECT().GetImageID(mock.Anything, "myapp:latest").Return("sha256:abc123", nil)
2208+ runtime.EXPECT().IsContainerRunning(mock.Anything, "existing-container").Return(false, nil)
2209+
2210+ // Full deploy proceeds (replaces crashed container)
2211+ newContainer := &domain.Container{ID: "new-container", Name: "gordon-test.example.com-new", Status: "created"}
2212+ runtime.EXPECT().CreateContainer(mock.Anything, mock.AnythingOfType("*domain.ContainerConfig")).Return(newContainer, nil)
2213+ runtime.EXPECT().StartContainer(mock.Anything, "new-container").Return(nil)
2214+ runtime.EXPECT().IsContainerRunning(mock.Anything, "new-container").Return(true, nil).Times(2)
2215+ runtime.EXPECT().InspectContainer(mock.Anything, "new-container").Return(&domain.Container{
2216+ ID: "new-container", Status: "running",
2217+ }, nil)
2218+ eventBus.EXPECT().Publish(domain.EventContainerDeployed, mock.AnythingOfType("*domain.ContainerEventPayload")).Return(nil)
2219+
2220+ // Old (exited) container is still finalized
2221+ runtime.EXPECT().StopContainer(mock.Anything, "existing-container").Return(nil)
2222+ runtime.EXPECT().RemoveContainer(mock.Anything, "existing-container", true).Return(nil)
2223+ runtime.EXPECT().RenameContainer(mock.Anything, "new-container", "gordon-test.example.com").Return(nil)
2224+
2225+ result, err := svc.Deploy(ctx, route)
2226+
2227+ assert.NoError(t, err)
2228+ assert.Equal(t, "new-container", result.ID)
2229+}
@@ -313,11 +313,64 @@ func TestService_Deploy_ReplacesExistingContainer(t *testing.T) {
313 313
314 assert.NoError(t, err)314 assert.NoError(t, err)
315 assert.Equal(t, "new-container", result.ID)315 assert.Equal(t, "new-container", result.ID)
316+}
316 317
317- // Old container should be replaced318+func TestService_Deploy_SkipRedundantDeploy_GetImageIDError(t *testing.T) {
318- tracked, exists := svc.Get(ctx, "test.example.com")319+ runtime := mocks.NewMockContainerRuntime(t)
319- assert.True(t, exists)320+ envLoader := mocks.NewMockEnvLoader(t)
320- assert.Equal(t, "new-container", tracked.ID)321+ eventBus := mocks.NewMockEventPublisher(t)
322+
323+ config := Config{
324+ ReadinessDelay: time.Millisecond,
325+ DrainDelay: time.Millisecond,
326+ }
327+ svc := NewService(runtime, envLoader, eventBus, nil, config)
328+ ctx := testContext()
329+
330+ // Existing container has ImageID, but GetImageID will fail
331+ existingContainer := &domain.Container{
332+ ID: "existing-container",
333+ Name: "gordon-test.example.com",
334+ Image: "myapp:latest",
335+ ImageID: "sha256:abc123",
336+ Status: "running",
337+ }
338+ svc.containers["test.example.com"] = existingContainer
339+
340+ route := domain.Route{
341+ Domain: "test.example.com",
342+ Image: "myapp:latest",
343+ }
344+
345+ // prepareDeployResources
346+ runtime.EXPECT().ListContainers(mock.Anything, true).Return([]*domain.Container{}, nil)
347+ runtime.EXPECT().ListImages(mock.Anything).Return([]string{"myapp:latest"}, nil)
348+ runtime.EXPECT().GetImageExposedPorts(mock.Anything, "myapp:latest").Return([]int{8080}, nil)
349+ envLoader.EXPECT().LoadEnv(mock.Anything, "test.example.com").Return([]string{}, nil)
350+ runtime.EXPECT().InspectImageEnv(mock.Anything, "myapp:latest").Return([]string{}, nil)
351+
352+ // GetImageID fails => deploy proceeds normally (graceful degradation)
353+ runtime.EXPECT().GetImageID(mock.Anything, "myapp:latest").Return("", errors.New("image inspect failed"))
354+
355+ // Full deploy proceeds despite the error
356+ newContainer := &domain.Container{ID: "new-container", Name: "gordon-test.example.com-new", Status: "created"}
357+ runtime.EXPECT().CreateContainer(mock.Anything, mock.AnythingOfType("*domain.ContainerConfig")).Return(newContainer, nil)
358+ runtime.EXPECT().StartContainer(mock.Anything, "new-container").Return(nil)
359+ runtime.EXPECT().IsContainerRunning(mock.Anything, "new-container").Return(true, nil).Times(2)
360+ runtime.EXPECT().InspectContainer(mock.Anything, "new-container").Return(&domain.Container{
361+ ID: "new-container", Status: "running",
362+ }, nil)
363+ eventBus.EXPECT().Publish(domain.EventContainerDeployed, mock.AnythingOfType("*domain.ContainerEventPayload")).Return(nil)
364+
365+ // Old container is finalized
366+ runtime.EXPECT().StopContainer(mock.Anything, "existing-container").Return(nil)
367+ runtime.EXPECT().RemoveContainer(mock.Anything, "existing-container", true).Return(nil)
368+ runtime.EXPECT().RenameContainer(mock.Anything, "new-container", "gordon-test.example.com").Return(nil)
369+
370+ result, err := svc.Deploy(ctx, route)
371+
372+ assert.NoError(t, err)
373+ assert.Equal(t, "new-container", result.ID)
321 }374 }
322 375
323 func TestService_Deploy_WithNetworkIsolation(t *testing.T) {376 func TestService_Deploy_WithNetworkIsolation(t *testing.T) {
@@ -2003,3 +2056,174 @@ func TestService_Deploy_NilCacheInvalidator(t *testing.T) {
2003 assert.NoError(t, err)2056 assert.NoError(t, err)
2004 assert.Equal(t, "new-container", result.ID)2057 assert.Equal(t, "new-container", result.ID)
2005 }2058 }
2059+
2060+func TestService_Deploy_SkipsRedundantDeploy(t *testing.T) {
2061+ runtime := mocks.NewMockContainerRuntime(t)
2062+ envLoader := mocks.NewMockEnvLoader(t)
2063+ eventBus := mocks.NewMockEventPublisher(t)
2064+
2065+ config := Config{
2066+ ReadinessDelay: time.Millisecond,
2067+ DrainDelay: time.Millisecond,
2068+ }
2069+ svc := NewService(runtime, envLoader, eventBus, nil, config)
2070+ ctx := testContext()
2071+
2072+ // Pre-populate with existing container that has an ImageID (set by InspectContainer).
2073+ // This simulates the first deploy (from image.pushed event) having already completed.
2074+ existingContainer := &domain.Container{
2075+ ID: "existing-container",
2076+ Name: "gordon-test.example.com",
2077+ Image: "myapp:latest",
2078+ ImageID: "sha256:abc123",
2079+ Status: "running",
2080+ }
2081+ svc.containers["test.example.com"] = existingContainer
2082+
2083+ route := domain.Route{
2084+ Domain: "test.example.com",
2085+ Image: "myapp:latest",
2086+ }
2087+
2088+ // prepareDeployResources will run: orphan cleanup, image pull, etc.
2089+ runtime.EXPECT().ListContainers(mock.Anything, true).Return([]*domain.Container{}, nil)
2090+ runtime.EXPECT().ListImages(mock.Anything).Return([]string{"myapp:latest"}, nil)
2091+ runtime.EXPECT().GetImageExposedPorts(mock.Anything, "myapp:latest").Return([]int{8080}, nil)
2092+ envLoader.EXPECT().LoadEnv(mock.Anything, "test.example.com").Return([]string{}, nil)
2093+ runtime.EXPECT().InspectImageEnv(mock.Anything, "myapp:latest").Return([]string{}, nil)
2094+
2095+ // skipRedundantDeploy: resolve image ID and compare with existing container
2096+ runtime.EXPECT().GetImageID(mock.Anything, "myapp:latest").Return("sha256:abc123", nil)
2097+ runtime.EXPECT().IsContainerRunning(mock.Anything, "existing-container").Return(true, nil)
2098+
2099+ // No CreateContainer, StartContainer, or readiness calls should happen
2100+
2101+ result, err := svc.Deploy(ctx, route)
2102+
2103+ assert.NoError(t, err)
2104+ assert.NotNil(t, result)
2105+ assert.Equal(t, "existing-container", result.ID)
2106+
2107+ // Container should still be tracked
2108+ tracked, exists := svc.Get(ctx, "test.example.com")
2109+ assert.True(t, exists)
2110+ assert.Equal(t, "existing-container", tracked.ID)
2111+}
2112+
2113+func TestService_Deploy_DoesNotSkipWhenImageIDDiffers(t *testing.T) {
2114+ runtime := mocks.NewMockContainerRuntime(t)
2115+ envLoader := mocks.NewMockEnvLoader(t)
2116+ eventBus := mocks.NewMockEventPublisher(t)
2117+ cacheInvalidator := mocks.NewMockProxyCacheInvalidator(t)
2118+
2119+ config := Config{
2120+ ReadinessDelay: time.Millisecond,
2121+ DrainDelay: time.Millisecond,
2122+ }
2123+ svc := NewService(runtime, envLoader, eventBus, nil, config)
2124+ svc.SetProxyCacheInvalidator(cacheInvalidator)
2125+ ctx := testContext()
2126+
2127+ // Existing container with a DIFFERENT image ID than what's being deployed
2128+ existingContainer := &domain.Container{
2129+ ID: "old-container",
2130+ Name: "gordon-test.example.com",
2131+ Image: "myapp:latest",
2132+ ImageID: "sha256:old-image",
2133+ Status: "running",
2134+ }
2135+ svc.containers["test.example.com"] = existingContainer
2136+
2137+ route := domain.Route{
2138+ Domain: "test.example.com",
2139+ Image: "myapp:latest",
2140+ }
2141+
2142+ // prepareDeployResources
2143+ runtime.EXPECT().ListContainers(mock.Anything, true).Return([]*domain.Container{}, nil)
2144+ runtime.EXPECT().ListImages(mock.Anything).Return([]string{"myapp:latest"}, nil)
2145+ runtime.EXPECT().GetImageExposedPorts(mock.Anything, "myapp:latest").Return([]int{8080}, nil)
2146+ envLoader.EXPECT().LoadEnv(mock.Anything, "test.example.com").Return([]string{}, nil)
2147+ runtime.EXPECT().InspectImageEnv(mock.Anything, "myapp:latest").Return([]string{}, nil)
2148+
2149+ // skipRedundantDeploy: image IDs differ, so deploy proceeds
2150+ runtime.EXPECT().GetImageID(mock.Anything, "myapp:latest").Return("sha256:new-image", nil)
2151+
2152+ // Full deploy proceeds
2153+ newContainer := &domain.Container{ID: "new-container", Name: "gordon-test.example.com-new", Status: "created"}
2154+ runtime.EXPECT().CreateContainer(mock.Anything, mock.AnythingOfType("*domain.ContainerConfig")).Return(newContainer, nil)
2155+ runtime.EXPECT().StartContainer(mock.Anything, "new-container").Return(nil)
2156+ runtime.EXPECT().IsContainerRunning(mock.Anything, "new-container").Return(true, nil).Times(2)
2157+ runtime.EXPECT().InspectContainer(mock.Anything, "new-container").Return(&domain.Container{
2158+ ID: "new-container", Status: "running",
2159+ }, nil)
2160+ eventBus.EXPECT().Publish(domain.EventContainerDeployed, mock.AnythingOfType("*domain.ContainerEventPayload")).Return(nil)
2161+ cacheInvalidator.EXPECT().InvalidateTarget(mock.Anything, "test.example.com").Return()
2162+ runtime.EXPECT().StopContainer(mock.Anything, "old-container").Return(nil)
2163+ runtime.EXPECT().RemoveContainer(mock.Anything, "old-container", true).Return(nil)
2164+ runtime.EXPECT().RenameContainer(mock.Anything, "new-container", "gordon-test.example.com").Return(nil)
2165+
2166+ result, err := svc.Deploy(ctx, route)
2167+
2168+ assert.NoError(t, err)
2169+ assert.Equal(t, "new-container", result.ID)
2170+}
2171+
2172+func TestService_Deploy_SkipRedundantDeploy_ContainerNotRunning(t *testing.T) {
2173+ runtime := mocks.NewMockContainerRuntime(t)
2174+ envLoader := mocks.NewMockEnvLoader(t)
2175+ eventBus := mocks.NewMockEventPublisher(t)
2176+
2177+ config := Config{
2178+ ReadinessDelay: time.Millisecond,
2179+ DrainDelay: time.Millisecond,
2180+ }
2181+ svc := NewService(runtime, envLoader, eventBus, nil, config)
2182+ ctx := testContext()
2183+
2184+ // Existing container has same image ID but is NOT running (crashed)
2185+ existingContainer := &domain.Container{
2186+ ID: "existing-container",
2187+ Name: "gordon-test.example.com",
2188+ Image: "myapp:latest",
2189+ ImageID: "sha256:abc123",
2190+ Status: "exited",
2191+ }
2192+ svc.containers["test.example.com"] = existingContainer
2193+
2194+ route := domain.Route{
2195+ Domain: "test.example.com",
2196+ Image: "myapp:latest",
2197+ }
2198+
2199+ // prepareDeployResources
2200+ runtime.EXPECT().ListContainers(mock.Anything, true).Return([]*domain.Container{}, nil)
2201+ runtime.EXPECT().ListImages(mock.Anything).Return([]string{"myapp:latest"}, nil)
2202+ runtime.EXPECT().GetImageExposedPorts(mock.Anything, "myapp:latest").Return([]int{8080}, nil)
2203+ envLoader.EXPECT().LoadEnv(mock.Anything, "test.example.com").Return([]string{}, nil)
2204+ runtime.EXPECT().InspectImageEnv(mock.Anything, "myapp:latest").Return([]string{}, nil)
2205+
2206+ // skipRedundantDeploy: same image ID but container not running => proceed with deploy
2207+ runtime.EXPECT().GetImageID(mock.Anything, "myapp:latest").Return("sha256:abc123", nil)
2208+ runtime.EXPECT().IsContainerRunning(mock.Anything, "existing-container").Return(false, nil)
2209+
2210+ // Full deploy proceeds (replaces crashed container)
2211+ newContainer := &domain.Container{ID: "new-container", Name: "gordon-test.example.com-new", Status: "created"}
2212+ runtime.EXPECT().CreateContainer(mock.Anything, mock.AnythingOfType("*domain.ContainerConfig")).Return(newContainer, nil)
2213+ runtime.EXPECT().StartContainer(mock.Anything, "new-container").Return(nil)
2214+ runtime.EXPECT().IsContainerRunning(mock.Anything, "new-container").Return(true, nil).Times(2)
2215+ runtime.EXPECT().InspectContainer(mock.Anything, "new-container").Return(&domain.Container{
2216+ ID: "new-container", Status: "running",
2217+ }, nil)
2218+ eventBus.EXPECT().Publish(domain.EventContainerDeployed, mock.AnythingOfType("*domain.ContainerEventPayload")).Return(nil)
2219+
2220+ // Old (exited) container is still finalized
2221+ runtime.EXPECT().StopContainer(mock.Anything, "existing-container").Return(nil)
2222+ runtime.EXPECT().RemoveContainer(mock.Anything, "existing-container", true).Return(nil)
2223+ runtime.EXPECT().RenameContainer(mock.Anything, "new-container", "gordon-test.example.com").Return(nil)
2224+
2225+ result, err := svc.Deploy(ctx, route)
2226+
2227+ assert.NoError(t, err)
2228+ assert.Equal(t, "new-container", result.ID)
2229+}

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