prometheus

type ClusterOption struct{}

type ComponentOption struct{}

type ContainerOption struct {
	ResourceFilter string
	NamespaceName  string
	PodName        string
	ContainerName  string
}

type Interface interface {
	GetMetric(expr string, time time.Time) Metric
	GetMetricOverTime(expr string, start, end time.Time, step time.Duration) Metric
	GetMetadata(namespace string) []Metadata
	//TODO Query dimensions to be improved
	GetAppMetadata(namespace, appID string) []Metadata
	GetComponentMetadata(namespace, componentID string) []Metadata
	GetMetricLabelSet(expr string, start, end time.Time) []map[string]string
}

type Level int

type Metadata struct {
	Metric string `json:"metric,omitempty" description:"metric name"`
	Type   string `json:"type,omitempty" description:"metric type"`
	Help   string `json:"help,omitempty" description:"metric description"`
}

type Metric struct {
	MetricName string `json:"metric_name,omitempty" description:"metric name, eg. scheduler_up_sum"`
	MetricData `json:"data,omitempty" description:"actual metric result"`
	Error      string `json:"error,omitempty"`
}

type MetricData struct {
	MetricType   string        `json:"resultType,omitempty" description:"result type, one of matrix, vector"`
	MetricValues []MetricValue `json:"result,omitempty" description:"metric data including labels, time series and values"`
}

type MetricValue struct {
	Metadata map[string]string `json:"metric,omitempty" description:"time series labels"`
	// The type of Point is a float64 array with fixed length of 2.
	// So Point will always be initialized as [0, 0], rather than nil.
	// To allow empty Sample, we should declare Sample to type *Point
	Sample *Point  `json:"value,omitempty" description:"time series, values of vector type"`
	Series []Point `json:"values,omitempty" description:"time series, values of matrix type"`
}

type NamespaceOption struct {
	ResourceFilter string
	WorkspaceName  string
	NamespaceName  string
}

type NodeOption struct {
	ResourceFilter string
	NodeName       string
}

type Options struct {
	Endpoint string `json:"endpoint,omitempty" yaml:"endpoint"`
}

type PVCOption struct {
	ResourceFilter            string
	NamespaceName             string
	StorageClassName          string
	PersistentVolumeClaimName string
}

type PodOption struct {
	ResourceFilter string
	NodeName       string
	NamespaceName  string
	WorkloadKind   string
	WorkloadName   string
	PodName        string
}

type Point [2]float64

type QueryOption interface {
	Apply(*QueryOptions)
}

type QueryOptions struct {
	Level Level

	ResourceFilter            string
	NodeName                  string
	WorkspaceName             string
	NamespaceName             string
	WorkloadKind              string
	WorkloadName              string
	PodName                   string
	ContainerName             string
	StorageClassName          string
	PersistentVolumeClaimName string
}

type WorkloadOption struct {
	ResourceFilter string
	NamespaceName  string
	WorkloadKind   string
}

type WorkspaceOption struct {
	ResourceFilter string
	WorkspaceName  string
}