Merge pull request #29 from crunchycookie/emulate-elia-trace

Add renewable emulation

deployment/extensions/gc-emulator-service/Service.go

@@ -4,11 +4,18 @@ import (
 	"fmt"
 	"github.com/gin-gonic/gin"
 	"github.com/openstack-gc/extensions/gc-emulator-service/internal"
+	"log"
 	"os"
 )
 
 func main() {
 
+	err := configureLogFile()
+	if err != nil {
+		fmt.Println("Unable to setup log file", err)
+		return
+	}
+
 	configs, err := internal.NewConfigParser(os.Args[1])
 	if err != nil {
 		fmt.Println("Unable to start the gc-emulator service", err)
@@ -30,3 +37,17 @@ func main() {
 
 	manager.Status = false
 }
+
+func configureLogFile() error {
+	// O_APPEND = Append data to the file when writing.
+	// O_CREATE = Create a new file if none exists.
+	// O_WRONLY = Open the file write-only.
+	flags := os.O_APPEND | os.O_CREATE | os.O_WRONLY
+	file, err := os.OpenFile("gc-emulation-service.log", flags, 0666)
+	if err != nil {
+		log.Fatal(err)
+	}
+	// Redirecting logs to the file
+	log.SetOutput(file)
+	return err
+}

deployment/extensions/gc-emulator-service/internal/actions.go

@@ -2,6 +2,7 @@ package internal
 
 import (
 	"fmt"
+	"log"
 	"slices"
 	"strconv"
 	"strings"
@@ -35,6 +36,7 @@ func (o *GreenCoreMgt) evictVMsOnGreenCores() error {
 					return err
 				}
 				for _, server := range servers {
+					log.Printf("vm evicted: %s\n", server.Name)
 					err := RunThirdPartyClient[any](nil, "openstack-shelve-offload-server.sh", server.Id)
 					if err != nil {
 						return err

deployment/extensions/gc-emulator-service/internal/models.go

@@ -1,7 +1,8 @@
 package internal
 
 type osServerModel struct {
-	Id string `json:"ID"`
+	Id   string `json:"ID"`
+	Name string `json:"Name"`
 }
 
 type domainsVirshModel struct {

experiment/experiment-design.md

@@ -58,4 +58,13 @@ result is reduced trace.
 when pre-process script ran, initially it prits max values. so percentile can be adjusted by guessing for the size of the
 inventory we have.
 
-ex: for 26 cores inventory, maybe 4 requests max at a time suits. then 70th percentile is better.
+ex: for 26 cores inventory, maybe 4 requests max at a time suits. then 70th percentile is better.
+
+#### Integration test
+
+1. run the trace generator file. its responsibility to create vms and delete them after end of life. also, it switches green core status by calling external api.
+2. gc-emulation-service prints a log when a vm is evicted. this entry includes full vm name with regular or evictable type information.
+3. power monitoring screen sessions are active in the physical node. it captures all power metrics throughout.
+4. green score polling script also keeps polling and dumps green score locally.
+
+Once test ends, we can get power information, eviction information, and green score.