/
docker_kurtosis_backend.go
589 lines (519 loc) · 26.1 KB
/
docker_kurtosis_backend.go
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package docker_kurtosis_backend
import (
"context"
"github.com/kurtosis-tech/kurtosis/container-engine-lib/lib/backend_interface/objects/image_build_spec"
"io"
"sync"
"github.com/sirupsen/logrus"
"github.com/kurtosis-tech/kurtosis/container-engine-lib/lib/backend_impls/docker/docker_kurtosis_backend/engine_functions"
"github.com/kurtosis-tech/kurtosis/container-engine-lib/lib/backend_impls/docker/docker_kurtosis_backend/logs_aggregator_functions"
"github.com/kurtosis-tech/kurtosis/container-engine-lib/lib/backend_impls/docker/docker_kurtosis_backend/logs_aggregator_functions/implementations/vector"
"github.com/kurtosis-tech/kurtosis/container-engine-lib/lib/backend_impls/docker/docker_kurtosis_backend/logs_collector_functions"
"github.com/kurtosis-tech/kurtosis/container-engine-lib/lib/backend_impls/docker/docker_kurtosis_backend/logs_collector_functions/implementations/fluentbit"
"github.com/kurtosis-tech/kurtosis/container-engine-lib/lib/backend_impls/docker/docker_kurtosis_backend/reverse_proxy_functions"
"github.com/kurtosis-tech/kurtosis/container-engine-lib/lib/backend_impls/docker/docker_kurtosis_backend/reverse_proxy_functions/implementations/traefik"
user_service_functions "github.com/kurtosis-tech/kurtosis/container-engine-lib/lib/backend_impls/docker/docker_kurtosis_backend/user_services_functions"
"github.com/kurtosis-tech/kurtosis/container-engine-lib/lib/backend_impls/docker/docker_manager"
"github.com/kurtosis-tech/kurtosis/container-engine-lib/lib/backend_impls/docker/docker_manager/types"
"github.com/kurtosis-tech/kurtosis/container-engine-lib/lib/backend_impls/docker/docker_network_allocator"
"github.com/kurtosis-tech/kurtosis/container-engine-lib/lib/backend_impls/docker/object_attributes_provider"
"github.com/kurtosis-tech/kurtosis/container-engine-lib/lib/backend_impls/docker/object_attributes_provider/docker_label_key"
"github.com/kurtosis-tech/kurtosis/container-engine-lib/lib/backend_impls/docker/object_attributes_provider/label_value_consts"
"github.com/kurtosis-tech/kurtosis/container-engine-lib/lib/backend_interface/objects/compute_resources"
"github.com/kurtosis-tech/kurtosis/container-engine-lib/lib/backend_interface/objects/container"
"github.com/kurtosis-tech/kurtosis/container-engine-lib/lib/backend_interface/objects/enclave"
"github.com/kurtosis-tech/kurtosis/container-engine-lib/lib/backend_interface/objects/engine"
"github.com/kurtosis-tech/kurtosis/container-engine-lib/lib/backend_interface/objects/exec_result"
"github.com/kurtosis-tech/kurtosis/container-engine-lib/lib/backend_interface/objects/image_download_mode"
"github.com/kurtosis-tech/kurtosis/container-engine-lib/lib/backend_interface/objects/logs_aggregator"
"github.com/kurtosis-tech/kurtosis/container-engine-lib/lib/backend_interface/objects/logs_collector"
"github.com/kurtosis-tech/kurtosis/container-engine-lib/lib/backend_interface/objects/reverse_proxy"
"github.com/kurtosis-tech/kurtosis/container-engine-lib/lib/backend_interface/objects/service"
"github.com/kurtosis-tech/kurtosis/container-engine-lib/lib/database_accessors/enclave_db/free_ip_addr_tracker"
"github.com/kurtosis-tech/kurtosis/container-engine-lib/lib/database_accessors/enclave_db/service_registration"
"github.com/kurtosis-tech/stacktrace"
)
const (
isResourceInformationComplete = true
)
type DockerKurtosisBackend struct {
dockerManager *docker_manager.DockerManager
dockerNetworkAllocator *docker_network_allocator.DockerNetworkAllocator
objAttrsProvider object_attributes_provider.DockerObjectAttributesProvider
// TODO This is ONLY relevant to internal-to-enclave functions, meaning that we now have a *DockerKurtosisBackend
// which takes in some values which are only useful for certain functions. What we should really do is split all
// KurtosisBackend functions into API container, engine server, and CLI functions, and move the functionality there
// (in essence creating APIContainerKurtosisBackend, EngineKurtosisBackend, CLIKurtosisBackend). That way, everything
// will be cleaner. HOWEVER, the reason it's not done this way as of 2022-05-12 is because the CLI still uses some
// KurtosisBackend functionality that it shouldn't (e.g. GetUserServiceLogs). This should all flow through the API
// container API instead.
// This map is set exactly once, upon creation of the DockerKubernetesBackend, and never modified afterwards. Therefore, it doesn't need to be protected with a mutex (because the FreeIPProviders are themselves threadsafe)
enclaveFreeIpProviders map[enclave.EnclaveUUID]*free_ip_addr_tracker.FreeIpAddrTracker
serviceRegistrationRepository *service_registration.ServiceRegistrationRepository
productionMode bool
// Control concurrent access to serviceRegistrations
serviceRegistrationMutex *sync.Mutex
}
func NewDockerKurtosisBackend(
dockerManager *docker_manager.DockerManager,
enclaveFreeIpProviders map[enclave.EnclaveUUID]*free_ip_addr_tracker.FreeIpAddrTracker,
serviceRegistrationRepository *service_registration.ServiceRegistrationRepository,
productionMode bool,
) *DockerKurtosisBackend {
dockerNetworkAllocator := docker_network_allocator.NewDockerNetworkAllocator(dockerManager)
return &DockerKurtosisBackend{
dockerManager: dockerManager,
dockerNetworkAllocator: dockerNetworkAllocator,
objAttrsProvider: object_attributes_provider.GetDockerObjectAttributesProvider(),
enclaveFreeIpProviders: enclaveFreeIpProviders,
serviceRegistrationRepository: serviceRegistrationRepository,
productionMode: productionMode,
serviceRegistrationMutex: &sync.Mutex{},
}
}
func (backend *DockerKurtosisBackend) FetchImage(ctx context.Context, image string, downloadMode image_download_mode.ImageDownloadMode) (bool, string, error) {
return backend.dockerManager.FetchImage(ctx, image, downloadMode)
}
func (backend *DockerKurtosisBackend) PruneUnusedImages(ctx context.Context) ([]string, error) {
prunedImages, err := backend.dockerManager.PruneUnusedImages(ctx)
prunedImageNames := []string{}
for _, prunedImage := range prunedImages {
if lenPrunedImageTags := len(prunedImage.RepoTags); lenPrunedImageTags != 1 {
return nil, stacktrace.NewError("Expected exactly one repo tag, but found %d (%v). This is a bug in Kurtosis.", lenPrunedImageTags, prunedImage.RepoTags)
}
prunedImageNames = append(prunedImageNames, prunedImage.RepoTags[0])
}
if err != nil {
return prunedImageNames, stacktrace.Propagate(err, "An error occurred pruning image from kurtosis backend")
}
return prunedImageNames, nil
}
func (backend *DockerKurtosisBackend) CreateEngine(
ctx context.Context,
imageOrgAndRepo string,
imageVersionTag string,
grpcPortNum uint16,
envVars map[string]string,
) (
*engine.Engine,
error,
) {
return engine_functions.CreateEngine(
ctx,
imageOrgAndRepo,
imageVersionTag,
grpcPortNum,
envVars,
backend.dockerManager,
backend.objAttrsProvider,
)
}
func (backend *DockerKurtosisBackend) GetEngines(
ctx context.Context,
filters *engine.EngineFilters,
) (
map[engine.EngineGUID]*engine.Engine,
error,
) {
return engine_functions.GetEngines(ctx, filters, backend.dockerManager)
}
func (backend *DockerKurtosisBackend) StopEngines(
ctx context.Context,
filters *engine.EngineFilters,
) (
resultSuccessfulEngineUuids map[engine.EngineGUID]bool,
resultErroredEngineUuids map[engine.EngineGUID]error,
resultErr error,
) {
return engine_functions.StopEngines(ctx, filters, backend.dockerManager)
}
func (backend *DockerKurtosisBackend) DestroyEngines(
ctx context.Context,
filters *engine.EngineFilters,
) (
resultSuccessfulEngineUuids map[engine.EngineGUID]bool,
resultErroredEngineUuids map[engine.EngineGUID]error,
resultErr error,
) {
return engine_functions.DestroyEngines(ctx, filters, backend.dockerManager)
}
func (backend *DockerKurtosisBackend) GetEngineLogs(ctx context.Context, outputDirpath string) error {
return engine_functions.GetEngineLogs(ctx, outputDirpath, backend.dockerManager)
}
func (backend *DockerKurtosisBackend) DumpKurtosis(ctx context.Context, outputDirpath string) error {
return engine_functions.DumpKurtosis(ctx, outputDirpath, backend)
}
func (backend *DockerKurtosisBackend) RegisterUserServices(_ context.Context, enclaveUuid enclave.EnclaveUUID, services map[service.ServiceName]bool) (map[service.ServiceName]*service.ServiceRegistration, map[service.ServiceName]error, error) {
freeIpAddrProviderForEnclave, found := backend.enclaveFreeIpProviders[enclaveUuid]
if !found {
return nil, nil, stacktrace.NewError(
"Received a request to register services in enclave '%v', but no free IP address provider was "+
"defined for this enclave; this likely means that the start request is being called where it shouldn't "+
"be (i.e. outside the API container)",
enclaveUuid,
)
}
registeredService, failedServices, err := user_service_functions.RegisterUserServices(enclaveUuid, services, backend.serviceRegistrationRepository, freeIpAddrProviderForEnclave, backend.serviceRegistrationMutex)
if err != nil {
return nil, nil, stacktrace.Propagate(err, "Unexpected error registering services to enclave '%s'", enclaveUuid)
}
return registeredService, failedServices, nil
}
func (backend *DockerKurtosisBackend) UnregisterUserServices(_ context.Context, enclaveUuid enclave.EnclaveUUID, services map[service.ServiceUUID]bool) (map[service.ServiceUUID]bool, map[service.ServiceUUID]error, error) {
freeIpAddrProviderForEnclave, found := backend.enclaveFreeIpProviders[enclaveUuid]
if !found {
return nil, nil, stacktrace.NewError(
"Received a request to unregister services in enclave '%v', but no free IP address provider was "+
"defined for this enclave; this likely means that the start request is being called where it shouldn't "+
"be (i.e. outside the API container)",
enclaveUuid,
)
}
servicesSuccessfullyUnregistered, failedServices, err := user_service_functions.UnregisterUserServices(enclaveUuid, services, backend.serviceRegistrationRepository, freeIpAddrProviderForEnclave, backend.serviceRegistrationMutex)
if err != nil {
return nil, nil, stacktrace.Propagate(err, "An error occurred unregistering services '%+v' for enclave with UUID '%v'", services, enclaveUuid)
}
return servicesSuccessfullyUnregistered, failedServices, nil
}
func (backend *DockerKurtosisBackend) StartRegisteredUserServices(ctx context.Context, enclaveUuid enclave.EnclaveUUID, services map[service.ServiceUUID]*service.ServiceConfig) (map[service.ServiceUUID]*service.Service, map[service.ServiceUUID]error, error) {
freeIpAddrProviderForEnclave, found := backend.enclaveFreeIpProviders[enclaveUuid]
if !found {
return nil, nil, stacktrace.NewError(
"Received a request to start services in enclave '%v', but no free IP address provider was "+
"defined for this enclave; this likely means that the start request is being called where it shouldn't "+
"be (i.e. outside the API container)",
enclaveUuid,
)
}
logsCollector, err := backend.GetLogsCollectorForEnclave(ctx, enclaveUuid)
if err != nil {
return nil, nil, stacktrace.Propagate(err, "An error occurred getting the logs collector")
}
if logsCollector == nil || logsCollector.GetStatus() != container.ContainerStatus_Running {
return nil, nil, stacktrace.NewError("The user services can't be started because no logs collector is running for it to send logs to.")
}
logsCollectorIpAddressInEnclaveNetwork := logsCollector.GetEnclaveNetworkIpAddress()
if logsCollectorIpAddressInEnclaveNetwork == nil {
return nil, nil, stacktrace.NewError("Expected the logs collector to have an ip address in the enclave network but it does not.")
}
logsCollectorAvailabilityChecker := fluentbit.NewFluentbitAvailabilityChecker(logsCollectorIpAddressInEnclaveNetwork, logsCollector.GetPrivateHttpPort().GetNumber())
var restartPolicy docker_manager.RestartPolicy = docker_manager.NoRestart
if backend.productionMode {
restartPolicy = docker_manager.RestartOnFailure
}
successfullyStartedService, failedService, err := user_service_functions.StartRegisteredUserServices(
ctx,
enclaveUuid,
services,
backend.serviceRegistrationRepository,
logsCollector,
logsCollectorAvailabilityChecker,
backend.objAttrsProvider,
freeIpAddrProviderForEnclave,
backend.dockerManager,
restartPolicy)
if err != nil {
return nil, nil, stacktrace.Propagate(err, "Unexpected error while starting user service")
}
return successfullyStartedService, failedService, nil
}
func (backend *DockerKurtosisBackend) RemoveRegisteredUserServiceProcesses(ctx context.Context, enclaveUuid enclave.EnclaveUUID, services map[service.ServiceUUID]bool) (map[service.ServiceUUID]bool, map[service.ServiceUUID]error, error) {
successfullyStartedService, failedService, err := user_service_functions.RemoveRegisteredUserServiceProcesses(
ctx,
enclaveUuid,
services,
backend.serviceRegistrationRepository,
backend.dockerManager)
if err != nil {
return nil, nil, stacktrace.Propagate(err, "Unexpected error while updating user services")
}
return successfullyStartedService, failedService, nil
}
func (backend *DockerKurtosisBackend) GetUserServices(
ctx context.Context,
enclaveUuid enclave.EnclaveUUID,
filters *service.ServiceFilters,
) (
map[service.ServiceUUID]*service.Service,
error,
) {
return user_service_functions.GetUserServices(ctx, enclaveUuid, filters, backend.dockerManager)
}
func (backend *DockerKurtosisBackend) GetUserServiceLogs(
ctx context.Context,
enclaveUuid enclave.EnclaveUUID,
filters *service.ServiceFilters,
shouldFollowLogs bool,
) (
map[service.ServiceUUID]io.ReadCloser,
map[service.ServiceUUID]error,
error,
) {
return user_service_functions.GetUserServiceLogs(ctx, enclaveUuid, filters, shouldFollowLogs, backend.dockerManager)
}
// NOTE: This function will block while the exec is ongoing; if we need more perf we can make it async
func (backend *DockerKurtosisBackend) RunUserServiceExecCommands(
ctx context.Context,
enclaveUuid enclave.EnclaveUUID,
userServiceCommands map[service.ServiceUUID][]string,
) (
map[service.ServiceUUID]*exec_result.ExecResult,
map[service.ServiceUUID]error,
error,
) {
return user_service_functions.RunUserServiceExecCommands(ctx, enclaveUuid, userServiceCommands, backend.dockerManager)
}
func (backend *DockerKurtosisBackend) RunUserServiceExecCommandWithStreamedOutput(
ctx context.Context,
enclaveUuid enclave.EnclaveUUID,
serviceUuid service.ServiceUUID,
cmd []string,
) (chan string, chan *exec_result.ExecResult, error) {
return user_service_functions.RunUserServiceExecCommandWithStreamedOutput(ctx, enclaveUuid, serviceUuid, cmd, backend.dockerManager)
}
func (backend *DockerKurtosisBackend) GetShellOnUserService(ctx context.Context, enclaveUuid enclave.EnclaveUUID, serviceUuid service.ServiceUUID) error {
return user_service_functions.GetShellOnUserService(ctx, enclaveUuid, serviceUuid, backend.dockerManager)
}
// It returns io.ReadCloser which is a tar stream. It's up to the caller to close the reader.
func (backend *DockerKurtosisBackend) CopyFilesFromUserService(
ctx context.Context,
enclaveUuid enclave.EnclaveUUID,
serviceUuid service.ServiceUUID,
srcPathOnContainer string,
output io.Writer,
) error {
return user_service_functions.CopyFilesFromUserService(ctx, enclaveUuid, serviceUuid, srcPathOnContainer, output, backend.dockerManager)
}
func (backend *DockerKurtosisBackend) StopUserServices(
ctx context.Context,
enclaveUuid enclave.EnclaveUUID,
filters *service.ServiceFilters,
) (
resultSuccessfulServiceUUIDs map[service.ServiceUUID]bool,
resultErroredServiceUUIDs map[service.ServiceUUID]error,
resultErr error,
) {
return user_service_functions.StopUserServices(ctx, enclaveUuid, filters, backend.serviceRegistrationRepository, backend.dockerManager)
}
func (backend *DockerKurtosisBackend) DestroyUserServices(
ctx context.Context,
enclaveUuid enclave.EnclaveUUID,
filters *service.ServiceFilters,
) (
resultSuccessfulUuids map[service.ServiceUUID]bool,
resultErroredUuids map[service.ServiceUUID]error,
resultErr error,
) {
freeIpAddrProviderForEnclave, found := backend.enclaveFreeIpProviders[enclaveUuid]
if !found {
return nil, nil, stacktrace.NewError(
"Received a request to start services in enclave '%v', but no free IP address provider was "+
"defined for this enclave; this likely means that the start request is being called where it shouldn't "+
"be (i.e. outside the API container)",
enclaveUuid,
)
}
successfullyDestroyedServices, failedServices, err := user_service_functions.DestroyUserServices(
ctx,
enclaveUuid,
filters,
backend.serviceRegistrationRepository,
backend.serviceRegistrationMutex,
freeIpAddrProviderForEnclave,
backend.dockerManager)
if err != nil {
return nil, nil, stacktrace.Propagate(err, "Unexpected error destroying services in enclave '%s'", enclaveUuid)
}
return successfullyDestroyedServices, failedServices, nil
}
func (backend *DockerKurtosisBackend) CreateLogsAggregator(ctx context.Context) (*logs_aggregator.LogsAggregator, error) {
logsAggregatorContainer := vector.NewVectorLogsAggregatorContainer() //Declaring the implementation
logsAggregator, _, err := logs_aggregator_functions.CreateLogsAggregator(
ctx,
logsAggregatorContainer,
backend.dockerManager,
backend.objAttrsProvider,
)
if err != nil {
return nil, stacktrace.Propagate(err, "An error occurred creating the logs aggregator using the logs aggregator container '%+v'.", logsAggregatorContainer)
}
return logsAggregator, nil
}
func (backend *DockerKurtosisBackend) GetLogsAggregator(ctx context.Context) (*logs_aggregator.LogsAggregator, error) {
maybeLogsAggregator, err := logs_aggregator_functions.GetLogsAggregator(
ctx,
backend.dockerManager,
)
if err != nil {
return nil, stacktrace.Propagate(err, "An error occurred getting the logs aggregator")
}
return maybeLogsAggregator, nil
}
func (backend *DockerKurtosisBackend) DestroyLogsAggregator(ctx context.Context) error {
if err := logs_aggregator_functions.DestroyLogsAggregator(ctx, backend.dockerManager); err != nil {
return stacktrace.Propagate(err, "An error occurred destroying the logs aggregator")
}
return nil
}
func (backend *DockerKurtosisBackend) CreateLogsCollectorForEnclave(
ctx context.Context,
enclaveUuid enclave.EnclaveUUID,
logsCollectorTcpPortNumber uint16,
logsCollectorHttpPortNumber uint16,
) (
*logs_collector.LogsCollector,
error,
) {
var logsAggregator *logs_aggregator.LogsAggregator
maybeLogsAggregator, err := logs_aggregator_functions.GetLogsAggregator(ctx, backend.dockerManager)
if err != nil {
return nil, stacktrace.Propagate(err, "An error occurred getting the logs aggregator. The logs collector cannot be run without a logs aggregator.")
}
if maybeLogsAggregator == nil {
logrus.Warnf("Logs aggregator container does not exist. This is unexpected as docker should have restarted the container automatically.")
logrus.Warnf("This can be fixed by restarting the engine using `kurtosis engine restart` and attempting to create the enclave again.")
return nil, stacktrace.NewError("No logs aggregator container exists. The logs collector cannot be run without a logs aggregator.")
}
if maybeLogsAggregator.GetStatus() != container.ContainerStatus_Running {
logrus.Warnf("Logs aggregator exists but is not running. Instead container status is '%v'. This is unexpected as docker should have restarted the container automatically.",
maybeLogsAggregator.GetStatus())
logrus.Warnf("This can be fixed by restarting the engine using `kurtosis engine restart` and attempting to create the enclave again.")
return nil, stacktrace.NewError(
"The logs aggregator container exists but is not running. Instead logs aggregator container status is '%v'. The logs collector cannot be run without a logs aggregator.",
maybeLogsAggregator.GetStatus(),
)
}
logsAggregator = maybeLogsAggregator
//Declaring the implementation
logsCollectorContainer := fluentbit.NewFluentbitLogsCollectorContainer()
logsCollector, err := logs_collector_functions.CreateLogsCollectorForEnclave(
ctx,
enclaveUuid,
logsCollectorTcpPortNumber,
logsCollectorHttpPortNumber,
logsCollectorContainer,
logsAggregator,
backend.dockerManager,
backend.objAttrsProvider,
)
if err != nil {
return nil, stacktrace.Propagate(err, "An error occurred creating the logs collector using the '%v' TCP port number, the '%v' HTTP port number and the los collector container '%+v'", logsCollectorTcpPortNumber, logsCollectorHttpPortNumber, logsCollectorContainer)
}
return logsCollector, nil
}
// If nothing is found returns nil
func (backend *DockerKurtosisBackend) GetLogsCollectorForEnclave(ctx context.Context, enclaveUuid enclave.EnclaveUUID) (resultMaybeLogsCollector *logs_collector.LogsCollector, resultErr error) {
maybeLogsCollector, err := logs_collector_functions.GetLogsCollectorForEnclave(
ctx,
enclaveUuid,
backend.dockerManager,
)
if err != nil {
return nil, stacktrace.Propagate(err, "An error occurred getting the logs collector")
}
return maybeLogsCollector, nil
}
func (backend *DockerKurtosisBackend) DestroyLogsCollectorForEnclave(ctx context.Context, enclaveUuid enclave.EnclaveUUID) error {
if err := logs_collector_functions.DestroyLogsCollector(ctx, enclaveUuid, backend.dockerManager); err != nil {
return stacktrace.Propagate(err, "An error occurred destroying the logs collector")
}
return nil
}
func (backend *DockerKurtosisBackend) CreateReverseProxy(ctx context.Context) (*reverse_proxy.ReverseProxy, error) {
reverseProxyContainer := traefik.NewTraefikReverseProxyContainer()
reverseProxy, _, err := reverse_proxy_functions.CreateReverseProxy(
ctx,
reverseProxyContainer,
backend.dockerManager,
backend.objAttrsProvider,
)
if err != nil {
return nil, stacktrace.Propagate(err, "An error occurred creating the reverse proxy using the reverse proxy container '%+v'.", reverseProxyContainer)
}
return reverseProxy, nil
}
func (backend *DockerKurtosisBackend) GetReverseProxy(ctx context.Context) (*reverse_proxy.ReverseProxy, error) {
maybeReverseProxy, err := reverse_proxy_functions.GetReverseProxy(
ctx,
backend.dockerManager,
)
if err != nil {
return nil, stacktrace.Propagate(err, "An error occurred getting the reverse proxy")
}
return maybeReverseProxy, nil
}
func (backend *DockerKurtosisBackend) DestroyReverseProxy(ctx context.Context) error {
if err := reverse_proxy_functions.DestroyReverseProxy(ctx, backend.dockerManager); err != nil {
return stacktrace.Propagate(err, "An error occurred destroying the reverse proxy")
}
return nil
}
func (backend *DockerKurtosisBackend) ConnectReverseProxyToNetwork(ctx context.Context, networkId string) error {
if err := reverse_proxy_functions.ConnectReverseProxyToNetwork(ctx, backend.dockerManager, networkId); err != nil {
return stacktrace.Propagate(err, "An error occurred connecting the reverse proxy to the network with ID '%v'", networkId)
}
return nil
}
func (backend *DockerKurtosisBackend) DisconnectReverseProxyFromNetwork(ctx context.Context, networkId string) error {
if err := reverse_proxy_functions.DisconnectReverseProxyFromNetwork(ctx, backend.dockerManager, networkId); err != nil {
return stacktrace.Propagate(err, "An error occurred disconnecting the reverse proxy from the network with ID '%v'", networkId)
}
return nil
}
func (backend *DockerKurtosisBackend) GetAvailableCPUAndMemory(ctx context.Context) (compute_resources.MemoryInMegaBytes, compute_resources.CpuMilliCores, bool, error) {
availableMemory, availableCpu, err := backend.dockerManager.GetAvailableCPUAndMemory(ctx)
if err != nil {
return 0, 0, false, stacktrace.Propagate(err, "an error occurred fetching resource information from the docker backend")
}
return availableMemory, availableCpu, isResourceInformationComplete, nil
}
func (backend *DockerKurtosisBackend) BuildImage(ctx context.Context, imageName string, imageBuildSpec *image_build_spec.ImageBuildSpec) error {
return backend.dockerManager.BuildImage(ctx, imageName, imageBuildSpec)
}
// ====================================================================================================
//
// Private helper functions shared by multiple subfunctions files
//
// ====================================================================================================
func (backend *DockerKurtosisBackend) getEnclaveNetworkByEnclaveUuid(ctx context.Context, enclaveUuid enclave.EnclaveUUID) (*types.Network, error) {
networkSearchLabels := map[string]string{
docker_label_key.AppIDDockerLabelKey.GetString(): label_value_consts.AppIDDockerLabelValue.GetString(),
docker_label_key.EnclaveUUIDDockerLabelKey.GetString(): string(enclaveUuid),
}
enclaveNetworksFound, err := backend.dockerManager.GetNetworksByLabels(ctx, networkSearchLabels)
if err != nil {
return nil, stacktrace.Propagate(err, "An error occurred getting Docker networks by enclave ID '%v'", enclaveUuid)
}
numMatchingNetworks := len(enclaveNetworksFound)
if numMatchingNetworks == 0 {
return nil, stacktrace.NewError("No network was found for enclave with ID '%v'", enclaveUuid)
}
if numMatchingNetworks > 1 {
return nil, stacktrace.NewError(
"Expected exactly one network matching enclave ID '%v', but got %v",
enclaveUuid,
numMatchingNetworks,
)
}
return enclaveNetworksFound[0], nil
}
// Guaranteed to either return an enclave data volume name or throw an error
func (backend *DockerKurtosisBackend) getEnclaveDataVolumeByEnclaveUuid(ctx context.Context, enclaveUuid enclave.EnclaveUUID) (string, error) {
volumeSearchLabels := map[string]string{
docker_label_key.AppIDDockerLabelKey.GetString(): label_value_consts.AppIDDockerLabelValue.GetString(),
docker_label_key.EnclaveUUIDDockerLabelKey.GetString(): string(enclaveUuid),
docker_label_key.VolumeTypeDockerLabelKey.GetString(): label_value_consts.EnclaveDataVolumeTypeDockerLabelValue.GetString(),
}
foundVolumes, err := backend.dockerManager.GetVolumesByLabels(ctx, volumeSearchLabels)
if err != nil {
return "", stacktrace.Propagate(err, "An error occurred getting enclave data volumes matching labels '%+v'", volumeSearchLabels)
}
if len(foundVolumes) > 1 {
return "", stacktrace.NewError("Found multiple enclave data volumes matching enclave ID '%v'; this should never happen", enclaveUuid)
}
if len(foundVolumes) == 0 {
return "", stacktrace.NewError("No enclave data volume found for enclave '%v'", enclaveUuid)
}
volume := foundVolumes[0]
return volume.Name, nil
}