reduce profile file collisions

previously, QRYSTAL_PROFILE_PATH would conflict between e.g. mio and
node, and even cs

Author: nyiyui

config/cs.service

@@ -5,7 +5,7 @@ After=network.target network-online.target
 [Service]
 User=qrystal-cs
 ExecStart=qrystal-cs -config /etc/qrystal/cs-config.yml
-Environment=QRYSTAL_PROFILE_PATH=/tmp/qrystal-profile.pprof
+Environment=QRYSTAL_PROFILE=on
 RuntimeDirectory=qrystal-cs
 RuntimeDirectoryMode=0700
 StateDirectory=qrystal-cs

config/runner.service

@@ -4,7 +4,7 @@ After=network.target network-online.target
 
 [Service]
 ExecStart=qrystal-runner
-Environment=QRYSTAL_PROFILE_PATH=/tmp/qrystal-profile.pprof
+Environment=QRYSTAL_PROFILE=on
 Environment=RUNNER_MIO_PATH=/opt/qrystal/runner-mio
 Environment=RUNNER_NODE_PATH=/opt/qrystal/runner-node
 Environment=RUNNER_NODE_CONFIG_PATH=/etc/qrystal/node-config.yml

profile/main.go

@@ -5,17 +5,30 @@ import (
 	"os"
 	"runtime/pprof"
 	"time"
+
+	"github.com/nyiyui/qrystal/util"
 )
 
 func Profile() {
 	log.Print("profiling is enabled")
-	profilePath := os.Getenv("QRYSTAL_PROFILE_PATH")
-	if profilePath != "" {
-		profile(profilePath)
+	enable := os.Getenv("QRYSTAL_PROFILE")
+	if enable == "on" {
+		profile()
 	}
 }
 
-func profile(profilePath string) {
+func profile() {
+	f, err := os.CreateTemp("", "qrystal-profile-*")
+	if err != nil {
+		util.S.Errorf("create temp: %s", err)
+		return
+	}
+	profilePath := f.Name()
+	err = f.Close()
+	if err != nil {
+		util.S.Errorf("close temp: %s", err)
+		return
+	}
 	writeProfile(profilePath)
 	ticker := time.NewTicker(1 * time.Hour)
 	go func() {