v1alpha1

type Assignment struct {
	// Name of the parameter being assigned
	Name string `json:"name"`
	// Value of the assignment
	Value intstr.IntOrString `json:"value"`
}

type ConfigMapHelmValuesFromSource struct {
	corev1.LocalObjectReference `json:",inline"`
}

type Constraint struct {
	// The optional name of the constraint
	Name string `json:"name,omitempty"`
	// The ordering constraint to impose
	Order *OrderConstraint `json:"order,omitempty"`
	// The sum constraint to impose
	Sum *SumConstraint `json:"sum,omitempty"`
}

type Experiment struct {
	metav1.TypeMeta `json:",inline"`
	// Standard object metadata
	metav1.ObjectMeta `json:"metadata,omitempty"`
	// Specification of the desired behavior for an experiment
	Spec ExperimentSpec `json:"spec,omitempty"`
	// Current status of an experiment
	Status ExperimentStatus `json:"status,omitempty"`
}

type ExperimentCondition struct {
	// The condition type
	Type ExperimentConditionType `json:"type"`
	// The status of the condition, one of "True", "False", or "Unknown
	Status corev1.ConditionStatus `json:"status"`
	// The last known time the condition was checked
	LastProbeTime metav1.Time `json:"lastProbeTime"`
	// The time at which the condition last changed status
	LastTransitionTime metav1.Time `json:"lastTransitionTime"`
	// A reason code describing the why the condition occurred
	Reason string `json:"reason,omitempty"`
	// A human readable message describing the transition
	Message string `json:"message,omitempty"`
}

type ExperimentConditionType string

type ExperimentList struct {
	metav1.TypeMeta `json:",inline"`
	// Standard list metadata
	metav1.ListMeta `json:"metadata,omitempty"`
	// The list of experiments
	Items []Experiment `json:"items"`
}

type ExperimentSpec struct {
	// Replicas is the number of trials to execute concurrently, defaults to 1
	Replicas *int32 `json:"replicas,omitempty"`
	// Optimization defines additional configuration for the optimization
	Optimization []Optimization `json:"optimization,omitempty"`
	// Parameters defines the search space for the experiment
	Parameters []Parameter `json:"parameters"`
	// Constraints defines restrictions on the parameter domain for the experiment
	Constraints []Constraint `json:"constraints,omitempty"`
	// Metrics defines the outcomes for the experiment
	Metrics []Metric `json:"metrics"`
	// Patches is a sequence of templates written against the experiment parameters that will be used to put the
	// cluster into the desired state
	Patches []PatchTemplate `json:"patches,omitempty"`
	// NamespaceSelector is used to locate existing namespaces for trials
	NamespaceSelector *metav1.LabelSelector `json:"namespaceSelector,omitempty"`
	// NamespaceTemplate can be specified to create new namespaces for trials; if specified created namespaces must be
	// matched by the namespace selector
	NamespaceTemplate *NamespaceTemplateSpec `json:"namespaceTemplate,omitempty"`
	// Selector locates trial resources that are part of this experiment
	Selector *metav1.LabelSelector `json:"selector,omitempty"`
	// Template for creating a new trial. The resulting trial must be matched by Selector. The template can provide an
	// initial namespace, however other namespaces (matched by NamespaceSelector) will be used if the effective
	// replica count is more then one
	Template TrialTemplateSpec `json:"template,omitempty"`
}

type ExperimentStatus struct {
	// Phase is a brief human readable description of the experiment status
	Phase string `json:"phase"`
	// ActiveTrials is the observed number of running trials
	ActiveTrials int32 `json:"activeTrials"`
	// Conditions is the current state of the experiment
	Conditions []ExperimentCondition `json:"conditions,omitempty"`
}

type HelmValue struct {
	// The name of Helm value as passed to one of the set options
	Name string `json:"name"`
	// Force the value to be treated as a string
	ForceString bool `json:"forceString,omitempty"`
	// Set a Helm value using the evaluated template. Templates are evaluated using the same rules as patches
	Value intstr.IntOrString `json:"value,omitempty"`
	// Source for a Helm value
	ValueFrom *HelmValueSource `json:"valueFrom,omitempty"`
}

type HelmValueSource struct {
	// Selects a trial parameter assignment as a Helm value
	ParameterRef *ParameterSelector `json:"parameterRef,omitempty"`
}

type HelmValuesFromSource struct {
	// The ConfigMap to select from
	ConfigMap *ConfigMapHelmValuesFromSource `json:"configMap,omitempty"`
}

type Metric struct {
	// The name of the metric
	Name string `json:"name"`
	// Indicator that the goal of the experiment is to minimize the value of this metric
	Minimize bool `json:"minimize,omitempty"`
	// The inclusive minimum allowed value for the metric
	Min *resource.Quantity `json:"min,omitempty"`
	// The inclusive maximum allowed value for the metric
	Max *resource.Quantity `json:"max,omitempty"`
	// Indicator that this metric should be optimized (default: true)
	Optimize *bool `json:"optimize,omitempty"`

	// The metric collection type, one of: local|pods|prometheus|datadog|jsonpath, default: local
	Type MetricType `json:"type,omitempty"`
	// Collection type specific query, e.g. Go template for "local", PromQL for "prometheus" or a JSON pointer expression (with curly braces) for "jsonpath"
	Query string `json:"query"`
	// Collection type specific query for the error associated with collected metric value
	ErrorQuery string `json:"errorQuery,omitempty"`

	// The scheme to use when collecting metrics
	Scheme string `json:"scheme,omitempty"`
	// Selector matching services to collect this metric from, only the first matched service to provide a value is used
	Selector *metav1.LabelSelector `json:"selector,omitempty"`
	// The port number or name on the matched service to collect the metric value from
	Port intstr.IntOrString `json:"port,omitempty"`
	// URL path component used to collect the metric value from an endpoint (used as a prefix for the Prometheus API)
	Path string `json:"path,omitempty"`
}

type MetricType string

type NamespaceTemplateSpec struct {
	// Standard object metadata
	metav1.ObjectMeta `json:"metadata,omitempty"`
	// Specification of the namespace
	Spec corev1.NamespaceSpec `json:"spec,omitempty"`
}

type Optimization struct {
	// Name is the name of the optimization configuration to set
	Name string `json:"name"`
	// Value is string representation of the optimization configuration
	Value string `json:"value"`
}

type OrderConstraint struct {
	// LowerParameter is the name of the parameter that must be the smaller of two parameters
	LowerParameter string `json:"lowerParameter"`
	// UpperParameter is the name of the parameter that must be the larger of two parameters
	UpperParameter string `json:"upperParameter"`
}

type Parameter struct {
	// The name of the parameter
	Name string `json:"name"`
	// The baseline value for this parameter.
	Baseline *intstr.IntOrString `json:"baseline,omitempty"`
	// The inclusive minimum value of the parameter
	Min int32 `json:"min,omitempty"`
	// The inclusive maximum value of the parameter
	Max int32 `json:"max,omitempty"`
	// Internal use only
	Values []string `json:"values,omitempty"`
}

type ParameterSelector struct {
	// The name of the trial parameter to use
	Name string `json:"name"`
}

type PatchOperation struct {
	// The reference to the object that the patched should be applied to
	TargetRef corev1.ObjectReference `json:"targetRef"`
	// The patch content type, must be a type supported by the Kubernetes API server
	PatchType types.PatchType `json:"patchType"`
	// The raw data representing the patch to be applied
	Data []byte `json:"data"`
	// The number of remaining attempts to apply the patch, will be automatically set
	// to zero if the patch is successfully applied
	AttemptsRemaining int `json:"attemptsRemaining,omitempty"`
}

type PatchReadinessGate struct {
	// ConditionType refers to a condition in the patched target's condition list
	ConditionType string `json:"conditionType"`
}

type PatchTemplate struct {
	// The patch type, one of: strategic|merge|json, default: strategic
	Type PatchType `json:"type,omitempty"`
	// A Go Template that evaluates to valid patch
	Patch string `json:"patch"`
	// Direct reference to the object the patch should be applied to
	TargetRef *corev1.ObjectReference `json:"targetRef,omitempty"`
	// ReadinessGates will be evaluated for patch target readiness. A patch target is ready if all conditions specified
	// in the readiness gates have a status equal to "True". If no readiness gates are specified, some target types may
	// have default gates assigned to them. Some condition checks may result in errors, e.g. a condition type of "Ready"
	// is not allowed for a ConfigMap. Condition types starting with "redskyops.dev/" may not appear in the patched
	// target's condition list, but are still evaluated against the resource's state.
	ReadinessGates []PatchReadinessGate `json:"readinessGates,omitempty"`
}

type PatchType string

type ReadinessCheck struct {
	// TargetRef is the reference to the object to test the readiness of
	TargetRef corev1.ObjectReference `json:"targetRef"`
	// Selector may be used to trigger a search for multiple related objects to search; this may have RBAC implications,
	// in particular "list" permissions are required
	Selector *metav1.LabelSelector `json:"selector,omitempty"`
	// ConditionTypes are the status conditions that must be "True"; in addition to conditions that appear in the
	// status of the target object, additional special conditions starting with "redskyops.dev/" can be tested
	ConditionTypes []string `json:"conditionTypes,omitempty"`
	// InitialDelaySeconds is the approximate number of seconds after all of the patches have been applied to start
	// evaluating this check
	InitialDelaySeconds int32 `json:"initialDelaySeconds,omitempty"`
	// PeriodSeconds is the approximate amount of time in between evaluation attempts of this check
	PeriodSeconds int32 `json:"periodSeconds,omitempty"`
	// AttemptsRemaining is the number of failed attempts to allow before marking the entire trial as failed, will be
	// automatically set to zero if the check has been successfully evaluated
	AttemptsRemaining int32 `json:"attemptsRemaining,omitempty"`
	// LastCheckTime is the timestamp of the last evaluation attempt
	LastCheckTime *metav1.Time `json:"lastCheckTime,omitempty"`
}

type SetupTask struct {
	// The name that uniquely identifies the setup task
	Name string `json:"name"`
	// Override the default image used for performing setup tasks
	Image string `json:"image,omitempty"`
	// Override the default command for the container
	Command []string `json:"command,omitempty"`
	// Override the default args for the container
	Args []string `json:"args,omitempty"`
	// Flag to indicate the creation part of the task can be skipped
	SkipCreate bool `json:"skipCreate,omitempty"`
	// Flag to indicate the deletion part of the task can be skipped
	SkipDelete bool `json:"skipDelete,omitempty"`
	// Volume mounts for the setup task
	VolumeMounts []corev1.VolumeMount `json:"volumeMounts,omitempty"`
	// The Helm chart reference to release as part of this task
	HelmChart string `json:"helmChart,omitempty"`
	// The Helm chart version, empty means use the latest
	HelmChartVersion string `json:"helmChartVersion,omitempty"`
	// The Helm values to set, ignored unless helmChart is also set
	HelmValues []HelmValue `json:"helmValues,omitempty"`
	// The Helm values, ignored unless helmChart is also set
	HelmValuesFrom []HelmValuesFromSource `json:"helmValuesFrom,omitempty"`
	// The Helm repository to fetch the chart from
	HelmRepository string `json:"helmRepository,omitempty"`
}

type SumConstraint struct {
	// Bound for the sum of the listed parameters
	Bound resource.Quantity `json:"bound"`
	// IsUpperBound determines if the bound values is an upper or lower bound on the sum
	IsUpperBound bool `json:"isUpperBound,omitempty"`
	// Parameters that should be summed
	Parameters []SumConstraintParameter `json:"parameters"`
}

type SumConstraintParameter struct {
	// Name of the parameter
	Name string `json:"name"`
	// Weight of the parameter
	Weight resource.Quantity `json:"weight"`
}

type Trial struct {
	metav1.TypeMeta `json:",inline"`
	// Standard object metadata
	metav1.ObjectMeta `json:"metadata,omitempty"`
	// Specification of the desired behavior for a trial
	Spec TrialSpec `json:"spec,omitempty"`
	// Current status of a trial
	Status TrialStatus `json:"status,omitempty"`
}

type TrialCondition struct {
	// The condition type, e.g. "redskyops.dev/trial-complete"
	Type TrialConditionType `json:"type"`
	// The status of the condition, one of "True", "False", or "Unknown
	Status corev1.ConditionStatus `json:"status"`
	// The last known time the condition was checked
	LastProbeTime metav1.Time `json:"lastProbeTime"`
	// The time at which the condition last changed status
	LastTransitionTime metav1.Time `json:"lastTransitionTime"`
	// A reason code describing the why the condition occurred
	Reason string `json:"reason,omitempty"`
	// A human readable message describing the transition
	Message string `json:"message,omitempty"`
}

type TrialConditionType string

type TrialList struct {
	metav1.TypeMeta `json:",inline"`
	// Standard list metadata
	metav1.ListMeta `json:"metadata,omitempty"`
	// The list of trials
	Items []Trial `json:"items"`
}

type TrialReadinessGate struct {
	// Kind of the readiness target
	Kind string `json:"kind,omitempty"`
	// Name of the readiness target, mutually exclusive with "Selector"
	Name string `json:"name,omitempty"`
	// APIVersion of the readiness target
	APIVersion string `json:"apiVersion,omitempty"`
	// Selector matches the resources whose condition must be checked, mutually exclusive with "Name"
	Selector *metav1.LabelSelector `json:"selector,omitempty"`
	// ConditionTypes are the status conditions that must be "True"
	ConditionTypes []string `json:"conditionTypes,omitempty"`
	// InitialDelaySeconds is the approximate number of seconds after all of the patches have been applied to start
	// evaluating this check
	InitialDelaySeconds int32 `json:"initialDelaySeconds,omitempty"`
	// PeriodSeconds is the approximate amount of time in between evaluation attempts of this check;
	// defaults to 10 seconds, minimum value is 1 second
	PeriodSeconds int32 `json:"periodSeconds,omitempty"`
	// FailureThreshold is number of times that any of the specified ready conditions may be "False";
	// defaults to 3, minimum value is 1
	FailureThreshold int32 `json:"failureThreshold,omitempty"`
}

type TrialSpec struct {
	// ExperimentRef is the reference to the experiment that contains the definitions to use for this trial,
	// defaults to an experiment in the same namespace with the same name
	ExperimentRef *corev1.ObjectReference `json:"experimentRef,omitempty"`
	// Assignments are used to patch the cluster state prior to the trial run
	Assignments []Assignment `json:"assignments,omitempty"`
	// Selector matches the job representing the trial run
	Selector *metav1.LabelSelector `json:"selector,omitempty"`
	// Template is the job template used to create trial run jobs
	Template *batchv1beta1.JobTemplateSpec `json:"template,omitempty"`
	// InitialDelaySeconds is number of seconds to wait after a trial becomes ready before starting the trial run job
	InitialDelaySeconds int32 `json:"initialDelaySeconds,omitempty"`
	// The offset used to adjust the start time to account for spin up of the trial run
	StartTimeOffset *metav1.Duration `json:"startTimeOffset,omitempty"`
	// The approximate amount of time the trial run should execute (not inclusive of the start time offset)
	ApproximateRuntime *metav1.Duration `json:"approximateRuntime,omitempty"`
	// The minimum number of seconds before an attempt should be made to clean up the trial, if unset or negative no attempt is made to clean up the trial
	TTLSecondsAfterFinished *int32 `json:"ttlSecondsAfterFinished,omitempty"`
	// The minimum number of seconds before an attempt should be made to clean up a failed trial, defaults to TTLSecondsAfterFinished
	TTLSecondsAfterFailure *int32 `json:"ttlSecondsAfterFailure,omitempty"`
	// The readiness gates to check before running the trial job
	ReadinessGates []TrialReadinessGate `json:"readinessGates,omitempty"`

	// PatchOperations are the patches from the experiment evaluated in the context of this trial
	PatchOperations []PatchOperation `json:"patchOperations,omitempty"`
	// ReadinessChecks are the all of the objects whose conditions need to be inspected for this trial
	ReadinessChecks []ReadinessCheck `json:"readinessChecks,omitempty"`
	// Values are the collected metrics at the end of the trial run
	Values []Value `json:"values,omitempty"`

	// Setup tasks that must run before the trial starts (and possibly after it ends)
	SetupTasks []SetupTask `json:"setupTasks,omitempty"`
	// Volumes to make available to setup tasks, typically ConfigMap backed volumes
	SetupVolumes []corev1.Volume `json:"setupVolumes,omitempty"`
	// Service account name for running setup tasks, needs enough permissions to add and remove software
	SetupServiceAccountName string `json:"setupServiceAccountName,omitempty"`
	// Cluster role name to be assigned to the setup service account when creating namespaces
	SetupDefaultClusterRole string `json:"setupDefaultClusterRole,omitempty"`
	// Policy rules to be assigned to the setup service account when creating namespaces
	SetupDefaultRules []rbacv1.PolicyRule `json:"setupDefaultRules,omitempty"`
}

type TrialStatus struct {
	// Phase is a brief human readable description of the trial status
	Phase string `json:"phase"`
	// Assignments is a string representation of the trial assignments for reporting purposes
	Assignments string `json:"assignments"`
	// Values is a string representation of the trial values for reporting purposes
	Values string `json:"values"`
	// StartTime is the effective (possibly adjusted) time the trial run job started
	StartTime *metav1.Time `json:"startTime,omitempty"`
	// CompletionTime is the effective (possibly adjusted) time the trial run job completed
	CompletionTime *metav1.Time `json:"completionTime,omitempty"`
	// Condition is the current state of the trial
	Conditions []TrialCondition `json:"conditions,omitempty"`
}

type TrialTemplateSpec struct {
	// Standard object metadata
	metav1.ObjectMeta `json:"metadata,omitempty"`
	// Specification of the desired behavior for the trial
	Spec TrialSpec `json:"spec,omitempty"`
}

type Value struct {
	// The metric name the value corresponds to
	Name string `json:"name"`
	// The observed float64 value, formatted as a string
	Value string `json:"value"`
	// The observed float64 error (standard deviation), formatted as a string
	Error string `json:"error,omitempty"`
	// The number of remaining attempts to observer the value, will be automatically set
	// to zero if the metric is successfully collected
	AttemptsRemaining int `json:"attemptsRemaining,omitempty"`
}