feat: Initial OPHION structure

- Go backend with Fiber framework - Agent for metrics collection - Docker Compose for self-hosted - Auth middleware (JWT + API Keys) - Rate limiting - Install script
2026-02-05 21:35:47 -03:00
parent 268ff690df
commit 5b662cf12f
8 changed files with 449 additions and 0 deletions
--- a/cmd/agent/main.go
+++ b/cmd/agent/main.go
@@ -0,0 +1,135 @@
+package main
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"log"
+	"net/http"
+	"os"
+	"runtime"
+	"time"
+
+	"github.com/shirou/gopsutil/v3/cpu"
+	"github.com/shirou/gopsutil/v3/disk"
+	"github.com/shirou/gopsutil/v3/host"
+	"github.com/shirou/gopsutil/v3/mem"
+	"github.com/shirou/gopsutil/v3/net"
+)
+
+type Metrics struct {
+	Hostname  string    `json:"hostname"`
+	Timestamp time.Time `json:"timestamp"`
+	CPU       CPUMetric `json:"cpu"`
+	Memory    MemMetric `json:"memory"`
+	Disk      []DiskMetric `json:"disk"`
+	Network   NetMetric `json:"network"`
+}
+
+type CPUMetric struct {
+	UsagePercent float64 `json:"usage_percent"`
+	Cores        int     `json:"cores"`
+}
+
+type MemMetric struct {
+	Total       uint64  `json:"total"`
+	Used        uint64  `json:"used"`
+	UsedPercent float64 `json:"used_percent"`
+}
+
+type DiskMetric struct {
+	Path        string  `json:"path"`
+	Total       uint64  `json:"total"`
+	Used        uint64  `json:"used"`
+	UsedPercent float64 `json:"used_percent"`
+}
+
+type NetMetric struct {
+	BytesSent uint64 `json:"bytes_sent"`
+	BytesRecv uint64 `json:"bytes_recv"`
+}
+
+func main() {
+	serverURL := os.Getenv("OPHION_SERVER")
+	if serverURL == "" {
+		serverURL = "http://localhost:8080"
+	}
+
+	apiKey := os.Getenv("OPHION_API_KEY")
+	if apiKey == "" {
+		log.Fatal("OPHION_API_KEY is required")
+	}
+
+	interval := 30 * time.Second
+	log.Printf("🐍 OPHION Agent starting - reporting to %s every %s", serverURL, interval)
+
+	ticker := time.NewTicker(interval)
+	for range ticker.C {
+		metrics := collectMetrics()
+		sendMetrics(serverURL, apiKey, metrics)
+	}
+}
+
+func collectMetrics() Metrics {
+	hostname, _ := os.Hostname()
+	
+	cpuPercent, _ := cpu.Percent(time.Second, false)
+	cpuUsage := 0.0
+	if len(cpuPercent) > 0 {
+		cpuUsage = cpuPercent[0]
+	}
+
+	memInfo, _ := mem.VirtualMemory()
+	
+	diskInfo, _ := disk.Usage("/")
+	disks := []DiskMetric{{
+		Path:        "/",
+		Total:       diskInfo.Total,
+		Used:        diskInfo.Used,
+		UsedPercent: diskInfo.UsedPercent,
+	}}
+
+	netIO, _ := net.IOCounters(false)
+	netMetric := NetMetric{}
+	if len(netIO) > 0 {
+		netMetric.BytesSent = netIO[0].BytesSent
+		netMetric.BytesRecv = netIO[0].BytesRecv
+	}
+
+	return Metrics{
+		Hostname:  hostname,
+		Timestamp: time.Now(),
+		CPU: CPUMetric{
+			UsagePercent: cpuUsage,
+			Cores:        runtime.NumCPU(),
+		},
+		Memory: MemMetric{
+			Total:       memInfo.Total,
+			Used:        memInfo.Used,
+			UsedPercent: memInfo.UsedPercent,
+		},
+		Disk:    disks,
+		Network: netMetric,
+	}
+}
+
+func sendMetrics(serverURL, apiKey string, metrics Metrics) {
+	data, _ := json.Marshal(metrics)
+	
+	req, _ := http.NewRequest("POST", serverURL+"/api/v1/metrics", bytes.NewBuffer(data))
+	req.Header.Set("Content-Type", "application/json")
+	req.Header.Set("Authorization", "Bearer "+apiKey)
+
+	client := &http.Client{Timeout: 10 * time.Second}
+	resp, err := client.Do(req)
+	if err != nil {
+		log.Printf("Error sending metrics: %v", err)
+		return
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode == 200 {
+		log.Printf("✓ Metrics sent: CPU=%.1f%% MEM=%.1f%%", 
+			metrics.CPU.UsagePercent, metrics.Memory.UsedPercent)
+	}
+}