const (
    StartTimeout = 60
    StopTimeout  = 60
)

var DefaultKubeAPIServerFlags = integration.APIServerDefaultArgs

type CRDInstallOptions struct {
    // Paths is a list of paths to the directories or files containing CRDs
    Paths []string

    // CRDs is a list of CRDs to install
    CRDs []runtime.Object

    // ErrorIfPathMissing will cause an error if a Path does not exist
    ErrorIfPathMissing bool

    // MaxTime is the max time to wait
    MaxTime time.Duration

    // PollInterval is the interval to check
    PollInterval time.Duration

    // CleanUpAfterUse will cause the CRDs listed for installation to be
    // uninstalled when terminating the test environment.
    // Defaults to false.
    CleanUpAfterUse bool
}

type Environment struct {
    // ControlPlane is the ControlPlane including the apiserver and etcd
    ControlPlane integration.ControlPlane

    // Config can be used to talk to the apiserver.  It's automatically
    // populated if not set using the standard controller-runtime config
    // loading.
    Config *rest.Config

    // CRDInstallOptions are the options for installing CRDs.
    CRDInstallOptions CRDInstallOptions

    // CRDInstallOptions are the options for installing webhooks.
    WebhookInstallOptions WebhookInstallOptions

    // ErrorIfCRDPathMissing provides an interface for the underlying
    // CRDInstallOptions.ErrorIfPathMissing. It prevents silent failures
    // for missing CRD paths.
    ErrorIfCRDPathMissing bool

    // CRDs is a list of CRDs to install.
    // If both this field and CRDs field in CRDInstallOptions are specified, the
    // values are merged.
    CRDs []runtime.Object

    // CRDDirectoryPaths is a list of paths containing CRD yaml or json configs.
    // If both this field and Paths field in CRDInstallOptions are specified, the
    // values are merged.
    CRDDirectoryPaths []string

    // UseExisting indicates that this environments should use an
    // existing kubeconfig, instead of trying to stand up a new control plane.
    // This is useful in cases that need aggregated API servers and the like.
    UseExistingCluster *bool

    // ControlPlaneStartTimeout is the maximum duration each controlplane component
    // may take to start. It defaults to the KUBEBUILDER_CONTROLPLANE_START_TIMEOUT
    // environment variable or 20 seconds if unspecified
    ControlPlaneStartTimeout time.Duration

    // ControlPlaneStopTimeout is the maximum duration each controlplane component
    // may take to stop. It defaults to the KUBEBUILDER_CONTROLPLANE_STOP_TIMEOUT
    // environment variable or 20 seconds if unspecified
    ControlPlaneStopTimeout time.Duration

    // KubeAPIServerFlags is the set of flags passed while starting the api server.
    KubeAPIServerFlags []string

    // AttachControlPlaneOutput indicates if control plane output will be attached to os.Stdout and os.Stderr.
    // Enable this to get more visibility of the testing control plane.
    // It respect KUBEBUILDER_ATTACH_CONTROL_PLANE_OUTPUT environment variable.
    AttachControlPlaneOutput bool
}

type WebhookInstallOptions struct {
    // Paths is a list of paths to the directories containing the mutating or validating webhooks yaml or json configs.
    DirectoryPaths []string

    // MutatingWebhooks is a list of MutatingWebhookConfigurations to install
    MutatingWebhooks []runtime.Object

    // ValidatingWebhooks is a list of ValidatingWebhookConfigurations to install
    ValidatingWebhooks []runtime.Object

    // IgnoreErrorIfPathMissing will ignore an error if a DirectoryPath does not exist when set to true
    IgnoreErrorIfPathMissing bool

    // LocalServingHost is the host for serving webhooks on.
    // it will be automatically populated
    LocalServingHost string

    // LocalServingPort is the allocated port for serving webhooks on.
    // it will be automatically populated by a random available local port
    LocalServingPort int

    // LocalServingCertDir is the allocated directory for serving certificates.
    // it will be automatically populated by the local temp dir
    LocalServingCertDir string

    // MaxTime is the max time to wait
    MaxTime time.Duration

    // PollInterval is the interval to check
    PollInterval time.Duration
}