kubernetes

type CNPGClusterStatus struct {
	// Current primary pod name (e.g., "postgres-1")
	CurrentPrimary string
	// Target primary pod name during failover/switchover (e.g., "postgres-2")
	TargetPrimary string
	// Cluster phase (e.g., "Cluster in healthy state", "Failing over", "Switchover in progress")
	Phase string
	// Number of ready instances
	ReadyInstances int64
	// Total number of instances
	Instances int64
}

type CRDPatchRequest struct {
	// Context for the operation
	Ctx context.Context

	// Kubernetes client with configuration
	Client Client

	// GroupVersionResource identifying the CRD (e.g., CNPG Cluster, Percona XtraDB Cluster)
	GVR schema.GroupVersionResource

	// Name of the specific resource to patch
	ResourceName string

	// JSON path where parameters should be set (e.g., "spec.postgresql.parameters")
	ParametersPath string

	// Map of parameter names to values (all values must be strings)
	Parameters map[string]string

	// Maximum number of retry attempts for concurrent operations
	MaxRetries int

	// Delay between retry attempts
	RetryDelay time.Duration

	// Logger for operation messages
	Logger *log.Logger
}

type Client struct {
	Namespace     string
	Config        *rest.Config
	Clientset     *kubernetes.Clientset
	MetricsClient *metricsv1.Clientset
}

type ContainerClient struct {
	Namespace     string
	PodName       string
	ContainerName string
	Clientset     *kubernetes.Clientset
	MetricsClient *metricsv1.Clientset
}

type ContainerIOStats struct {
	// Cumulative count of read operations completed
	ReadsTotal uint64
	// Cumulative count of write operations completed
	WritesTotal uint64
	// Cumulative bytes read
	ReadBytesTotal uint64
	// Cumulative bytes written
	WriteBytesTotal uint64
	// Timestamp from cAdvisor in milliseconds (used to detect stale metrics)
	Timestamp int64
}

type ContainerMetricsCache struct {
	PreviousCPUMillicores       int64
	PreviousMemoryBytes         int64
	PreviousReadBytesTotal      uint64
	PreviousWriteBytesTotal     uint64
	PreviousReadsTotal          uint64
	PreviousWritesTotal         uint64
	PreviousNetworkReceiveBytes uint64
	PreviousNetworkSendBytes    uint64
	PreviousTimestamp           time.Time
	PreviousCAdvisorTimestamp   int64 // Timestamp from cAdvisor metrics to detect stale data
	Initialized                 bool
}

type ContainerMetricsConfig struct {
	Client    *Client
	Namespace string
}

type DiskInfo struct {
	// Total disk space in bytes
	TotalBytes uint64
	// Used disk space in bytes
	UsedBytes uint64
	// Usage percentage (0-100)
	UsedPercent float64
	// Filesystem type (e.g., "ext4", "xfs", "overlay")
	FilesystemType string
	// Storage class name (e.g., "standard", "fast-ssd")
	StorageClassName string
}

type NetworkStats struct {
	// Cumulative bytes received
	ReceiveBytesTotal uint64
	// Cumulative bytes transmitted
	TransmitBytesTotal uint64
	// Cumulative packets received
	ReceivePacketsTotal uint64
	// Cumulative packets transmitted
	TransmitPacketsTotal uint64
}

type NodeOSInfo struct {
	OSImage          string // e.g., "Ubuntu 22.04.3 LTS"
	KernelVersion    string // e.g., "5.15.0-1048-gke"
	OperatingSystem  string // e.g., "linux"
	Architecture     string // e.g., "amd64"
	ContainerRuntime string // e.g., "containerd://1.6.24"
	KubeletVersion   string // e.g., "v1.27.3-gke.100"
}

type PodClient struct {
	Namespace     string
	PodName       string
	Clientset     *kubernetes.Clientset
	MetricsClient *metricsv1.Clientset
}