// Package model 定义采集模块的领域模型与指标命名规范。
package model

import "time"

// 指标组名称，用于标签 metric_group 与采集调度分组。
const (
	GroupCore     = "core"     // 15s
	GroupDisk     = "disk"     // 30s
	GroupNetwork  = "network"  // 30s
	GroupProcess  = "process"  // 60s
)

// 指标命名规范：<domain>.<metric>。
const (
	MetricCPUUsage       = "cpu.usage"
	MetricMemUsedPercent = "mem.used_percent"
	MetricLoad1m         = "load.1m"

	MetricDiskUsedPercent   = "disk.used_percent"
	MetricDiskIOReadBytes   = "disk.io.read_bytes"
	MetricDiskIOWriteBytes  = "disk.io.write_bytes"

	MetricNetBytesSent = "net.bytes_sent"
	MetricNetBytesRecv = "net.bytes_recv"
	MetricNetPktDrop   = "net.pkt_drop"

	MetricProcessCPU   = "process.cpu"
	MetricProcessMem   = "process.mem"
	MetricProcessCount = "process.count"
)

// 标签键。
const (
	LabelHostID      = "host_id"
	LabelService     = "service"
	LabelMetricGroup = "metric_group"
)

// Sample 是采集模块内部的指标样本表示，与 protobuf MetricSample 保持一一对应。
type Sample struct {
	Name      string
	Value     float64
	Timestamp int64
	Labels    map[string]string
}

// NewSample 构造一个携带基础标签的样本。
func NewSample(name string, value float64, at time.Time, labels map[string]string) Sample {
	if labels == nil {
		labels = map[string]string{}
	}
	return Sample{
		Name:      name,
		Value:     value,
		Timestamp: at.Unix(),
		Labels:    labels,
	}
}

// LogRecord 是采集模块内部的日志记录表示。
type LogRecord struct {
	Timestamp int64
	Level     string
	Source    string
	Message   string
	Fields    map[string]string
	File      string
	Offset    int64
}