Implemented the hardware service

+ Started working on web interface

README.md

@@ -1,4 +1,11 @@
 ## About
 
+## Disclaimer
+
+This software is only meant to run on linux, it's something I threw together all at once in one sitting without really thinking about structure or even caring about anything but making it work.
+
+It's actually meant to run on my own server just so I can track the temperature of my harddrives in a live environment, I just want this service to run, record the status of the harddrives, and be able via my VPN to access it in a private manner, it's not meant to be dockerized, it's not meant to be ran in a VM, it's meant to be ran either as a `service` or in a [screen](https://git.savannah.gnu.org/cgit/screen.git) in the background.
+
+It's not really meant to run all the time or anything like that, I just wanted to write this disclaimer, feel free to use the code any way you want to :)
 
 ## How to use

go.mod

@@ -4,5 +4,30 @@ go 1.21.6
 
 require (
 	github.com/anatol/smart.go v0.0.0-20230705044831-c3b27137baa3 // indirect
-	golang.org/x/sys v0.9.0 // indirect
+	github.com/bytedance/sonic v1.10.2 // indirect
+	github.com/chenzhuoyu/base64x v0.0.0-20230717121745-296ad89f973d // indirect
+	github.com/chenzhuoyu/iasm v0.9.1 // indirect
+	github.com/gabriel-vasile/mimetype v1.4.3 // indirect
+	github.com/gin-contrib/sse v0.1.0 // indirect
+	github.com/gin-gonic/gin v1.9.1 // indirect
+	github.com/go-playground/locales v0.14.1 // indirect
+	github.com/go-playground/universal-translator v0.18.1 // indirect
+	github.com/go-playground/validator/v10 v10.17.0 // indirect
+	github.com/goccy/go-json v0.10.2 // indirect
+	github.com/json-iterator/go v1.1.12 // indirect
+	github.com/klauspost/cpuid/v2 v2.2.6 // indirect
+	github.com/leodido/go-urn v1.2.4 // indirect
+	github.com/mattn/go-isatty v0.0.20 // indirect
+	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
+	github.com/modern-go/reflect2 v1.0.2 // indirect
+	github.com/pelletier/go-toml/v2 v2.1.1 // indirect
+	github.com/twitchyliquid64/golang-asm v0.15.1 // indirect
+	github.com/ugorji/go/codec v1.2.12 // indirect
+	golang.org/x/arch v0.7.0 // indirect
+	golang.org/x/crypto v0.18.0 // indirect
+	golang.org/x/net v0.20.0 // indirect
+	golang.org/x/sys v0.16.0 // indirect
+	golang.org/x/text v0.14.0 // indirect
+	google.golang.org/protobuf v1.32.0 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
 )

go.sum

@@ -1,4 +1,88 @@
 github.com/anatol/smart.go v0.0.0-20230705044831-c3b27137baa3 h1:kAF2MWFD8tyDqD74OQizymjj2cnZAURwSzBrEslCDnI=
 github.com/anatol/smart.go v0.0.0-20230705044831-c3b27137baa3/go.mod h1:llkexGSe52bW0OjNva0kvIqGZxfSnVfpKHrnKBI2+pU=
+github.com/bytedance/sonic v1.5.0/go.mod h1:ED5hyg4y6t3/9Ku1R6dU/4KyJ48DZ4jPhfY1O2AihPM=
+github.com/bytedance/sonic v1.10.0-rc/go.mod h1:ElCzW+ufi8qKqNW0FY314xriJhyJhuoJ3gFZdAHF7NM=
+github.com/bytedance/sonic v1.10.2 h1:GQebETVBxYB7JGWJtLBi07OVzWwt+8dWA00gEVW2ZFE=
+github.com/bytedance/sonic v1.10.2/go.mod h1:iZcSUejdk5aukTND/Eu/ivjQuEL0Cu9/rf50Hi0u/g4=
+github.com/chenzhuoyu/base64x v0.0.0-20211019084208-fb5309c8db06/go.mod h1:DH46F32mSOjUmXrMHnKwZdA8wcEefY7UVqBKYGjpdQY=
+github.com/chenzhuoyu/base64x v0.0.0-20221115062448-fe3a3abad311/go.mod h1:b583jCggY9gE99b6G5LEC39OIiVsWj+R97kbl5odCEk=
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lib/config/config.go

@@ -0,0 +1,19 @@
+package config
+
+type DHConfig struct {
+	DiskFetchFrequency  int `json:"diskFetchFrequency" comment:"How often should a snapshot be taken of the current state of the disks"`
+	MemoryDumpFrequency int `json:"memoryDumpFrequency" comment:"How often should we save the snapshots from memory to disk"`
+	MaxHistoryAge       int
+}
+
+func GetConfiguration() DHConfig {
+
+	// TODO: Read from os.environment or simply load the defaults
+
+	return DHConfig{
+		DiskFetchFrequency:  5,
+		MemoryDumpFrequency: 36,
+		MaxHistoryAge:       2592000,
+	}
+
+}

lib/hardware/logic.go

@@ -8,7 +8,7 @@ import (
 	"strings"
 )
 
-func GetSystemHardDrives() ([]HardDrive, error) {
+func GetSystemHardDrives() ([]*HardDrive, error) {
 
 	// Execute the lsblk command to get detailed block device information
 	cmd := exec.Command("lsblk", "-d", "-o", "NAME,TRAN,SIZE,MODEL,SERIAL,TYPE")
@@ -20,7 +20,7 @@ func GetSystemHardDrives() ([]HardDrive, error) {
 		return nil, err
 	}
 
-	var hardDrives []HardDrive
+	var hardDrives []*HardDrive
 
 	// Scan the output line by line
 	scanner := bufio.NewScanner(&out)
@@ -40,7 +40,7 @@ func GetSystemHardDrives() ([]HardDrive, error) {
 
 		// Filter out nvme drives (M.2)
 		if cols[1] != "nvme" {
-			hd := HardDrive{
+			hd := &HardDrive{
 				Name:        cols[0],
 				Transport:   cols[1],
 				Size:        cols[2],

lib/svc/service.go

@@ -0,0 +1,131 @@
+package svc
+
+import (
+	"encoding/gob"
+	"fmt"
+	"io"
+	"os"
+	"time"
+
+	"tea.chunkbyte.com/kato/drive-health/lib/config"
+	"tea.chunkbyte.com/kato/drive-health/lib/hardware"
+)
+
+// The path to where the snapshot database is located
+const SNAPSHOT_LIST_PATH = "./snapshots.dat"
+
+// A simple in-memory buffer for the history of snapshots
+var snapShotBuffer []*HardwareSnapshot
+
+// A snapshot in time of the current state of the harddrives
+type HardwareSnapshot struct {
+	TimeStamp time.Time
+	HDD       []*hardware.HardDrive
+}
+
+type Snapshots struct {
+	List []*HardwareSnapshot
+}
+
+// The function itterates through all hard disks and takes a snapshot of their state,
+// returns a struct which contains metadata as well as the harddrives themselves.
+func TakeHardwareSnapshot() (*HardwareSnapshot, error) {
+	drives, err := hardware.GetSystemHardDrives()
+	if err != nil {
+		return nil, err
+	}
+
+	snapShot := &HardwareSnapshot{
+		TimeStamp: time.Now(),
+		HDD:       []*hardware.HardDrive{},
+	}
+
+	for _, hdd := range drives {
+		hdd.GetTemperature(true)
+		snapShot.HDD = append(snapShot.HDD, hdd)
+	}
+
+	// Append to the in-memory listing
+	snapShotBuffer = append(snapShotBuffer, snapShot)
+
+	// Return the snapshot just in case there is any need to modify it,
+	// any modification to it will also affect the current buffer from memory.
+	return snapShot, nil
+}
+
+// The function wil check if the `.dat` file is present, if it is then it will load it into memory
+func UpdateHardwareSnapshotsFromFile() {
+	file, err := os.Open(SNAPSHOT_LIST_PATH)
+	if err != nil {
+		if os.IsNotExist(err) {
+			return // File does not exist, no snapshots to load
+		}
+		panic(err) // Handle error according to your error handling policy
+	}
+	defer file.Close()
+
+	decoder := gob.NewDecoder(file)
+	var snapshots Snapshots
+	if err := decoder.Decode(&snapshots); err != nil {
+		if err == io.EOF {
+			return // End of file reached
+		}
+		panic(err) // Handle error according to your error handling policy
+	}
+
+	snapShotBuffer = snapshots.List
+
+	fmt.Printf("Loaded %v snapshots from .dat", len(snapShotBuffer))
+}
+
+// Get the list of snapshots that have been buffered in memory
+func GetHardwareSnapshot() []*HardwareSnapshot {
+	return snapShotBuffer
+}
+
+// Dump the current snapshot history from memory to file
+func SaveSnapshotsToFile() error {
+	file, err := os.Create(SNAPSHOT_LIST_PATH)
+	if err != nil {
+		return err
+	}
+	defer file.Close()
+
+	encoder := gob.NewEncoder(file)
+	snapshots := Snapshots{List: snapShotBuffer}
+	if err := encoder.Encode(snapshots); err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func RunService() {
+
+	// Snapshot taking routine
+	go func() {
+		for {
+			time.Sleep(time.Duration(config.GetConfiguration().DiskFetchFrequency) * time.Second)
+			data, err := TakeHardwareSnapshot()
+			if err != nil {
+				fmt.Printf("Hardware Fetch Error: %s", err)
+			} else {
+				fmt.Println("Got Snapshot for " + data.TimeStamp.Format("02/01/2006"))
+				for _, hdd := range data.HDD {
+					fmt.Printf("%s[%s]: %v\n", hdd.Model, hdd.Size, hdd.Temperature)
+				}
+			}
+		}
+	}()
+
+	// Periodic saving routine
+	go func() {
+		for {
+			time.Sleep(time.Duration(config.GetConfiguration().MemoryDumpFrequency) * time.Second)
+			err := SaveSnapshotsToFile()
+			if err != nil {
+				fmt.Printf("Memory Dump Error: %s", err)
+			}
+		}
+	}()
+}

lib/web/api.go

@@ -0,0 +1,34 @@
+package web
+
+import (
+	"fmt"
+	"net/http"
+
+	"github.com/gin-gonic/gin"
+	"tea.chunkbyte.com/kato/drive-health/lib/hardware"
+)
+
+func setupApi(r *gin.Engine) {
+	api := r.Group("/v1/api")
+
+	api.GET("/disks", func(ctx *gin.Context) {
+		// Fetch the disk list
+		disks, err := hardware.GetSystemHardDrives()
+		if err != nil {
+			ctx.Error(err)
+		}
+
+		if ctx.Request.URL.Query().Get("temp") != "" {
+			for _, d := range disks {
+				temp := d.GetTemperature(true)
+				fmt.Printf("Disk Temp: %v", temp)
+			}
+		}
+
+		ctx.JSON(http.StatusOK, gin.H{
+			"message": "Disk List",
+			"disks":   disks,
+		})
+	})
+
+}

lib/web/frontend.go

@@ -0,0 +1,7 @@
+package web
+
+import "github.com/gin-gonic/gin"
+
+func setupFrontend(r *gin.Engine) {
+
+}

lib/web/health.go

@@ -0,0 +1,16 @@
+package web
+
+import (
+	"net/http"
+
+	"github.com/gin-gonic/gin"
+)
+
+func setupHealth(r *gin.Engine) {
+
+	r.GET("/ping", func(c *gin.Context) {
+		c.JSON(http.StatusOK, gin.H{
+			"status": "Pong",
+		})
+	})
+}

lib/web/net.go

@@ -0,0 +1,19 @@
+package web
+
+import (
+	"github.com/gin-gonic/gin"
+)
+
+func SetupRouter() *gin.Engine {
+	// Initialize the Gin engine
+	r := gin.Default()
+
+	// Setup Health Pings
+	setupHealth(r)
+	// Setup Api
+	setupApi(r)
+	// Setup Frontend
+	setupFrontend(r)
+
+	return r
+}

main.go

@@ -1,20 +1,53 @@
 package main
 
 import (
-	"fmt"
+	"context"
+	"log"
+	"net/http"
+	"os"
+	"os/signal"
+	"syscall"
+	"time"
 
-	"tea.chunkbyte.com/kato/drive-health/lib/hardware"
+	"tea.chunkbyte.com/kato/drive-health/lib/svc"
+	"tea.chunkbyte.com/kato/drive-health/lib/web"
 )
 
 func main() {
+	// Load existing snapshots from file
+	svc.UpdateHardwareSnapshotsFromFile()
 
-	hardDrives, err := hardware.GetSystemHardDrives()
+	router := web.SetupRouter()
-	if err != nil {
+
-		panic(err)
+	srv := &http.Server{
+		Addr:    ":8080",
+		Handler: router,
 	}
 
-	for _, hdd := range hardDrives {
+	// Run the server in a goroutine
-		fmt.Printf("%s %s [%s]: %vC\n", hdd.Model, hdd.Serial, hdd.Size, hdd.GetTemperature(true))
+	go func() {
+		if err := srv.ListenAndServe(); err != nil && err != http.ErrServerClosed {
+			log.Fatalf("listen: %s\n", err)
+		}
+	}()
+
+	// Run the hardware service
+	svc.RunService()
+
+	// Setting up signal capturing
+	quit := make(chan os.Signal, 1)
+	signal.Notify(quit, syscall.SIGINT, syscall.SIGTERM)
+
+	// Block until a signal is received
+	<-quit
+	log.Println("Shutting down server...")
+
+	// Graceful shutdown
+	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
+	defer cancel()
+	if err := srv.Shutdown(ctx); err != nil {
+		log.Fatal("Server forced to shutdown:", err)
 	}
 
+	log.Println("Server exiting")
 }

templates/index.html

@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Drive Health</title>
+</head>
+<body>
+    
+</body>
+</html>