improve handling of same port translation

demo_nginx/nginx.conf

@@ -0,0 +1,30 @@
+# nginx.conf
+user  nginx;
+worker_processes  auto;
+error_log  /var/log/nginx/error.log warn;
+pid        /var/run/nginx.pid;
+events {
+  worker_connections  1024;
+}
+http {
+  include       /etc/nginx/mime.types;
+  default_type  application/octet-stream;
+  log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
+  '$status $body_bytes_sent "$http_referer" '
+  '"$http_user_agent" "$http_x_forwarded_for"';
+  access_log  /var/log/nginx/access.log  main;
+  sendfile        on;
+  #tcp_nopush     on;
+  
+  keepalive_timeout  65;
+  #gzip  on;
+  #include /etc/nginx/conf.d/*.conf;
+server {
+  listen 80;
+  location / {
+    root   /usr/share/nginx/html;
+    index  index.html index.htm;
+    try_files $uri $uri/ /index.html;
+  }
+}
+}

main.go

@@ -47,8 +47,6 @@ const localConfigFile = "./conf/local_ocmonitord_conf.json"
 
 func main() {
 
-	os.Setenv("test_service","true") 	// Only for service demo, delete before merging on main
-
 	monitorLocal = false
 	// Test if monitor is launched outside (with parameters) or in a k8s environment (env variables sets)
 	if os.Getenv("KUBERNETES_SERVICE_HOST") == "" {

models/services.go

@@ -17,7 +17,7 @@ type Service struct {
 }
 
 type Metadata struct {
-    Name      string            `yaml:"name"`
+    Name      string            `yaml:"generateName"`
     
 }
 

workflow_builder/argo_builder.go

@@ -5,9 +5,11 @@
 package workflow_builder
 
 import (
+	"oc-monitord/models"
 	. "oc-monitord/models"
 	"os"
 	"slices"
+	"strconv"
 	"strings"
 	"time"
 
@@ -25,7 +27,7 @@ var logger zerolog.Logger
 type ArgoBuilder struct {
 	OriginWorkflow 	w.Workflow
 	Workflow       	Workflow
-	Services		*Service
+	Services		[]Service
 	Timeout        	int
 }
 
@@ -50,9 +52,6 @@ func (b *ArgoBuilder) CreateDAG() (string, error) {
 	
 	// handle services by checking if there is only one processing with hostname and port
 		
-	b.createNginxVolumes()
-	
-	
 	b.createTemplates()
 	b.createDAGstep()
 	b.createVolumes()
@@ -91,6 +90,7 @@ func (b *ArgoBuilder) createTemplates() {
 		var command string
 		var args string
 		var env string
+		var serv models.Service
 
 		comp_res := comp.Processing
 
@@ -114,24 +114,22 @@ func (b *ArgoBuilder) createTemplates() {
 		new_temp := Template{Name: argo_name, Container: temp_container}
 		new_temp.Inputs.Parameters = inputs_container
 		new_temp.Container.VolumeMounts = append(new_temp.Container.VolumeMounts, VolumeMount{Name: "workdir", MountPath: "/mnt/vol"}) // TODO : replace this with a search of the storage / data source name
-		new_temp.Container.VolumeMounts = append(new_temp.Container.VolumeMounts, VolumeMount{Name: "nginx-demo", MountPath: "/usr/share/nginx"}) // Used for processing services' demo with nginx 
 		
 		if (b.isService(comp.ID)){
-			serv := b.CreateService(comp)
-			b.createService(serv, argo_name, comp.ID)
+			serv = b.CreateService(comp)
+			b.addServiceToWorkflow(serv, argo_name, comp.ID)
 			new_temp.Metadata.Labels = make(map[string]string)
-			new_temp.Metadata.Labels["app"] = "oc-service"		// Construct the template for the k8s service and add a link in graph between k8s service and processing
+			new_temp.Metadata.Labels["app"] = serv.Spec.Selector["app"]		// Construct the template for the k8s service and add a link in graph between k8s service and processing
+			b.addServiceToArgo(serv)
 			// if err != nil {
 			// 	// TODO
 			// }
 		}
 		
 		b.Workflow.Spec.Templates = append(b.Workflow.Spec.Templates, new_temp)
+
 	}
 
-	if b.Services != nil {
-		b.addServiceToArgo()
-	}
 
 }
 
@@ -153,8 +151,9 @@ func (b *ArgoBuilder) createDAGstep() {
 		new_dag.Tasks = append(new_dag.Tasks, step)
 	}
 
-	if b.Services != nil {
-		new_dag.Tasks = append(new_dag.Tasks, Task{Name:"workflow-service-pod", Template: "workflow-service-pod"})
+	for i, _ := range b.Services {
+		name := "workflow-service-pod-"+strconv.Itoa(i + 1)
+		new_dag.Tasks = append(new_dag.Tasks, Task{Name: name , Template: name})
 	}
 
 	b.Workflow.Spec.Templates = append(b.Workflow.Spec.Templates, Template{Name: "dag", Dag: new_dag})
@@ -170,15 +169,6 @@ func (b *ArgoBuilder) createVolumes() {
 	b.Workflow.Spec.Volumes = append(b.Workflow.Spec.Volumes, new_volume)
 }
 
-// For demo purposes, until we implement the use of storage ressources
-func (b *ArgoBuilder) createNginxVolumes() {
-	new_volume := VolumeClaimTemplate{}
-	new_volume.Metadata.Name = "nginx-demo"
-	new_volume.Spec.AccessModes = []string{"ReadWriteOnce"}
-	new_volume.Spec.Resources.Requests.Storage = "1Gi"
-
-	b.Workflow.Spec.Volumes = append(b.Workflow.Spec.Volumes, new_volume)
-}
 
 
 func (b *ArgoBuilder) getDependency(current_computing_id string) (dependencies []string) {
@@ -320,13 +310,4 @@ func (b *ArgoBuilder) isService(id string) bool{
 }
 
 
-func (b *ArgoBuilder) addLabel(name string, id string) {
-	argo_name := getArgoName(name,id)
-	for _, template := range b.Workflow.Spec.Templates{
-		if template.Name == argo_name{
-			template.Metadata.Labels["app"] = "service-workflow"			
-			return
-		}
-	}
-}
 

workflow_builder/argo_services.go

@@ -7,6 +7,7 @@ import (
 
 	"cloud.o-forge.io/core/oc-lib/models/resource_model"
 	"cloud.o-forge.io/core/oc-lib/models/resources/workflow/graph"
+	"github.com/nwtgck/go-fakelish"
 	"go.mongodb.org/mongo-driver/bson"
 	"go.mongodb.org/mongo-driver/bson/primitive"
 	"gopkg.in/yaml.v3"
@@ -60,10 +61,10 @@ func (b *ArgoBuilder) CreateService(processing graph.GraphItem) models.Service{
 	new_service := models.Service{APIVersion: "v1", 
 							Kind: "Service", 
 							Metadata: models.Metadata{
-								Name: "workflow-service" ,
+								Name: "workflow-service-" ,
 							}, 
 							Spec: models.ServiceSpec{
-								Selector: map[string]string{"app": "oc-service"},
+								Selector: map[string]string{"app": "service-" + fakelish.GenerateFakeWord(5, 8)},
 								Ports: []models.ServicePort{
 								},
 								Type: "NodePort",
@@ -115,25 +116,28 @@ func completeServicePorts(service *models.Service, processing graph.GraphItem) {
 	return
 }
 
-func (b *ArgoBuilder) createService(service models.Service, processing_name string, processing_id string) {
-	if b.Services != nil{
-		b.Services.Spec.Ports = append(b.Services.Spec.Ports, service.Spec.Ports...)
-		}else {
-			b.Services = &service
+// The k8s service passed as the parameter only expose one port because it is the result of CreateService()
+// we check if this port is already exposed by a service in the workflow and we proceed to the creation of a new service OR 
+// add the port to the list of port exposed by an existing if portAlreadyExposed is false 
+func (b *ArgoBuilder) addServiceToWorkflow(service models.Service, processing_name string, processing_id string) (label string) {
+	if exposed, service_available_port := b.portAlreadyExposed(service.Spec.Ports[0].TargetPort); exposed && service_available_port != nil{
+		// The port you want to expose is already exposed by all the existing services
+		service_available_port.Spec.Ports = append(service_available_port.Spec.Ports, service.Spec.Ports...)
+		return service_available_port.Spec.Selector["app"]
 	} 
 
-	b.addLabel(processing_name,processing_id)
-
+	b.Services = append(b.Services, service)
+	return service.Spec.Selector["app"]	
 }
 
-func (b *ArgoBuilder) addServiceToArgo() error {
-	service_manifest, err := yaml.Marshal(b.Services)
+func (b *ArgoBuilder) addServiceToArgo(service models.Service) error {
+	service_manifest, err := yaml.Marshal(service)
 	if err != nil {
 		logger.Error().Msg("Could not marshal service manifest")
 		return err
 	}
 	
-	service_template := models.Template{Name: "workflow-service-pod", 
+	service_template := models.Template{Name: "workflow-service-pod-" + strconv.Itoa(len(b.Services)), 
 								Resource: models.ServiceResource{
 									Action: "create", 
 									SuccessCondition: "status.succeeded > 0",
@@ -146,3 +150,32 @@ func (b *ArgoBuilder) addServiceToArgo() error {
 
 	return nil
 }
+
+
+func (b *ArgoBuilder) addLabel(name string, id string) {
+	argo_name := getArgoName(name,id)
+	for _, template := range b.Workflow.Spec.Templates{
+		if template.Name == argo_name{
+			template.Metadata.Labels["app"] = "service-workflow"			
+			return
+		}
+	}
+}
+
+func (b *ArgoBuilder) portAlreadyExposed(port int64) (exposed bool, service *models.Service ){
+	// For all already existing k8s services, test if the port in parameter is already exposed and returns the first service that doesn't yet expose this port 
+	for _, s := range b.Services {
+		i := 0
+		port_exposed := false
+		for !port_exposed {
+			if s.Spec.Ports[i].TargetPort == port {
+				port_exposed = true
+			}
+		}
+		if !port_exposed {
+			return false, &s
+		}
+	}
+
+	return true, nil
+}