306 lines
11 KiB
Go
306 lines
11 KiB
Go
// A class that translates the informations held in the graph object
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// via its lists of components into an argo file, using the a list of
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// link ID to build the dag
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package workflow_builder
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import (
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"fmt"
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. "oc-monitord/models"
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"os"
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"regexp"
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"strings"
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"time"
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oclib "cloud.o-forge.io/core/oc-lib"
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"cloud.o-forge.io/core/oc-lib/models/resources/processing"
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"cloud.o-forge.io/core/oc-lib/models/resources/workflow/graph"
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w "cloud.o-forge.io/core/oc-lib/models/workflow"
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"github.com/nwtgck/go-fakelish"
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"github.com/rs/zerolog"
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"gopkg.in/yaml.v3"
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)
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var logger zerolog.Logger
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type ArgoBuilder struct {
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OriginWorkflow *w.Workflow
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Workflow Workflow
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Services []*Service
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Timeout int
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}
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type Workflow struct {
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ApiVersion string `yaml:"apiVersion"`
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Kind string `yaml:"kind"`
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Metadata struct {
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Name string `yaml:"name"`
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} `yaml:"metadata"`
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Spec Spec `yaml:"spec,omitempty"`
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}
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func (b *Workflow) setDag(dag *Dag) {
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for _, t := range b.Spec.Templates {
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if t.Name == "dag" {
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t.Dag = dag
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}
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}
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}
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func (b *Workflow) getDag() *Dag {
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for _, t := range b.Spec.Templates {
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if t.Name == "dag" {
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return t.Dag
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}
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}
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b.Spec.Templates = append(b.Spec.Templates, Template{Name: "dag", Dag: &Dag{}})
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return b.Spec.Templates[len(b.Spec.Templates)-1].Dag
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}
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type Spec struct {
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Entrypoint string `yaml:"entrypoint"`
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Arguments []Parameter `yaml:"arguments,omitempty"`
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Volumes []VolumeClaimTemplate `yaml:"volumeClaimTemplates,omitempty"`
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Templates []Template `yaml:"templates"`
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Timeout int `yaml:"activeDeadlineSeconds,omitempty"`
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}
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func (b *ArgoBuilder) CreateDAG(write bool) (string, int, []string, []string, error) {
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// handle services by checking if there is only one processing with hostname and port
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firstItems, lastItems, volumes := b.createTemplates()
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b.createVolumes(volumes)
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if b.Timeout > 0 {
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b.Workflow.Spec.Timeout = b.Timeout
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}
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b.Workflow.Spec.Entrypoint = "dag"
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b.Workflow.ApiVersion = "argoproj.io/v1alpha1"
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b.Workflow.Kind = "Workflow"
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if !write {
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return "", len(b.Workflow.getDag().Tasks), firstItems, lastItems, nil
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}
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random_name := fakelish.GenerateFakeWord(5, 8) + "-" + fakelish.GenerateFakeWord(5, 8)
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b.Workflow.Metadata.Name = "oc-monitor-" + random_name
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logger = oclib.GetLogger()
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yamlified, err := yaml.Marshal(b.Workflow)
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if err != nil {
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logger.Error().Msg("Could not transform object to yaml file")
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return "", 0, firstItems, lastItems, err
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}
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// Give a unique name to each argo file with its timestamp DD:MM:YYYY_hhmmss
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current_timestamp := time.Now().Format("02_01_2006_150405")
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file_name := random_name + "_" + current_timestamp + ".yml"
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workflows_dir := "./argo_workflows/"
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err = os.WriteFile(workflows_dir+file_name, []byte(yamlified), 0660)
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if err != nil {
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logger.Error().Msg("Could not write the yaml file")
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return "", 0, firstItems, lastItems, err
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}
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return file_name, len(b.Workflow.getDag().Tasks), firstItems, lastItems, nil
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}
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func (b *ArgoBuilder) createTemplates() ([]string, []string, []VolumeMount) {
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volumes := []VolumeMount{}
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firstItems := []string{}
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lastItems := []string{}
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for _, comp := range b.OriginWorkflow.GetProcessings() {
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if comp.Processing.Container != nil {
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volumes, firstItems, lastItems = b.createArgoTemplates(
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comp.ID, comp.Processing, volumes, firstItems, lastItems)
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} else {
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logger.Error().Msg("Not enough configuration setup, template can't be created : " + comp.Processing.GetName())
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return firstItems, lastItems, volumes
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}
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}
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firstWfTasks := map[string][]string{}
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latestWfTasks := map[string][]string{}
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relatedWfTasks := map[string][]string{}
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for _, wf := range b.OriginWorkflow.GetWorkflows() {
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realWorkflow, code, err := w.New().LoadOne(wf.Workflow.WorkflowID)
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if code != 200 {
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logger.Error().Msg("Error loading the workflow : " + err.Error())
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continue
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}
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subBuilder := ArgoBuilder{OriginWorkflow: realWorkflow.(*w.Workflow), Timeout: b.Timeout}
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_, _, fi, li, err := subBuilder.CreateDAG(false)
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if err != nil {
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logger.Error().Msg("Error creating the subworkflow : " + err.Error())
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continue
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}
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firstWfTasks[wf.ID] = fi
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if ok, depsOfIds := subBuilder.isArgoDependancy(wf.ID); ok { // IS BEFORE
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latestWfTasks[wf.ID] = li
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relatedWfTasks[wf.ID] = depsOfIds
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}
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subDag := subBuilder.Workflow.getDag()
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d := b.Workflow.getDag()
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d.Tasks = append(d.Tasks, subDag.Tasks...) // add the tasks of the subworkflow to the main workflow
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b.Workflow.Spec.Templates = append(b.Workflow.Spec.Templates, subBuilder.Workflow.Spec.Templates...)
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b.Workflow.Spec.Volumes = append(b.Workflow.Spec.Volumes, subBuilder.Workflow.Spec.Volumes...)
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b.Workflow.Spec.Arguments = append(b.Workflow.Spec.Arguments, subBuilder.Workflow.Spec.Arguments...)
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b.Services = append(b.Services, subBuilder.Services...)
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}
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for wfID, depsOfIds := range relatedWfTasks {
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for _, dep := range depsOfIds {
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for _, task := range b.Workflow.getDag().Tasks {
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if strings.Contains(task.Name, dep) {
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index := -1
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for i, depp := range task.Dependencies {
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if strings.Contains(depp, wfID) {
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index = i
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break
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}
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}
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if index != -1 {
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task.Dependencies = append(task.Dependencies[:index], task.Dependencies[index+1:]...)
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}
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task.Dependencies = append(task.Dependencies, latestWfTasks[wfID]...)
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}
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}
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}
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}
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for wfID, fi := range firstWfTasks {
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deps := b.getArgoDependencies(wfID)
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if len(deps) > 0 {
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for _, dep := range fi {
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for _, task := range b.Workflow.getDag().Tasks {
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if strings.Contains(task.Name, dep) {
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task.Dependencies = append(task.Dependencies, deps...)
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}
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}
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}
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}
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}
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if b.Services != nil {
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dag := b.Workflow.getDag()
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dag.Tasks = append(dag.Tasks, Task{Name: "workflow-service-pod", Template: "workflow-service-pod"})
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b.addServiceToArgo()
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}
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return firstItems, lastItems, volumes
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}
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func (b *ArgoBuilder) createArgoTemplates(id string,
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processing *processing.ProcessingResource,
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volumes []VolumeMount,
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firstItems []string,
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lastItems []string) ([]VolumeMount, []string, []string) {
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_, firstItems, lastItems = b.addTaskToArgo(b.Workflow.getDag(), id, processing, firstItems, lastItems)
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template := &Template{Name: getArgoName(processing.GetName(), id)}
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template.CreateContainer(processing, b.Workflow.getDag())
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// get datacenter from the processing
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if processing.IsService {
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b.CreateService(id, processing)
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template.Metadata.Labels = make(map[string]string)
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template.Metadata.Labels["app"] = "oc-service-" + processing.GetName() // Construct the template for the k8s service and add a link in graph between k8s service and processing
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}
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storages := b.OriginWorkflow.GetStoragesByRelatedProcessing(id)
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for _, storage := range storages {
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if storage.Local {
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volumes = template.Container.AddVolumeMount(VolumeMount{
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Name: strings.ReplaceAll(strings.ToLower(storage.GetName()), " ", "-"),
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MountPath: storage.Path,
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Storage: storage,
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}, volumes)
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}
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}
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b.Workflow.Spec.Templates = append(b.Workflow.Spec.Templates, *template)
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return volumes, firstItems, lastItems
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}
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func (b *ArgoBuilder) addTaskToArgo(dag *Dag, graphItemID string, processing *processing.ProcessingResource,
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firstItems []string, lastItems []string) (*Dag, []string, []string) {
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unique_name := getArgoName(processing.GetName(), graphItemID)
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step := Task{Name: unique_name, Template: unique_name}
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if processing.Container != nil {
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for name, value := range processing.Container.Env {
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step.Arguments.Parameters = append(step.Arguments.Parameters, Parameter{
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Name: name,
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Value: b.affectVariableEnv(value, b.OriginWorkflow.Graph),
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})
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}
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}
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step.Dependencies = b.getArgoDependencies(graphItemID)
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name := ""
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if b.OriginWorkflow.Graph.Items[graphItemID].Processing != nil {
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name = b.OriginWorkflow.Graph.Items[graphItemID].Processing.GetName()
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}
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if b.OriginWorkflow.Graph.Items[graphItemID].Workflow != nil {
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name = b.OriginWorkflow.Graph.Items[graphItemID].Workflow.GetName()
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}
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if len(step.Dependencies) == 0 && name != "" {
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firstItems = append(firstItems, getArgoName(name, graphItemID))
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}
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if ok, _ := b.isArgoDependancy(graphItemID); !ok && name != "" {
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lastItems = append(lastItems, getArgoName(name, graphItemID))
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}
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dag.Tasks = append(dag.Tasks, step)
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return dag, firstItems, lastItems
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}
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func (b *ArgoBuilder) affectVariableEnv(envVar string, graph *graph.Graph) string {
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var myExp = regexp.MustCompile(`(\{\{.*\}\})`) // regex to find all the variables in the command
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matches := myExp.FindAllString(envVar, -1) // find all the variables in the command
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for _, match := range matches { // for each variable in the command
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splitted := strings.Split( // split the variable to get the inout and the vars only
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strings.ReplaceAll(strings.ReplaceAll(strings.ReplaceAll(match, "{{", ""), "}}", ""), " ", ""), "_")
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if len(splitted) < 3 { // if the variable is not well formatted, we skip it
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logger.Error().Msgf("The variable %v is not well formatted", match)
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continue
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}
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graphItemID := splitted[1] // graphitemid is the id of the object
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vars := splitted[2] // vars is the name of the variable of the object
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_, obj := graph.GetResource(graphItemID)
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if obj != nil {
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envVar = strings.ReplaceAll(envVar, match, fmt.Sprintf("%v", obj.Serialize()[vars]))
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}
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}
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return envVar
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}
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func (b *ArgoBuilder) createVolumes(volumes []VolumeMount) { // TODO : one think about remote volume but TG
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for _, volume := range volumes {
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new_volume := VolumeClaimTemplate{}
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new_volume.Metadata.Name = strings.ReplaceAll(strings.ToLower(volume.Name), " ", "-")
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new_volume.Spec.AccessModes = []string{"ReadWriteOnce"}
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new_volume.Spec.Resources.Requests.Storage = fmt.Sprintf("%v", volume.Storage.Size) + volume.Storage.SizeType.ToArgo()
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b.Workflow.Spec.Volumes = append(b.Workflow.Spec.Volumes, new_volume)
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}
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}
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func (b *ArgoBuilder) isArgoDependancy(id string) (bool, []string) {
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dependancyOfIDs := []string{}
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isDeps := false
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for _, link := range b.OriginWorkflow.Graph.Links {
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source := b.OriginWorkflow.Graph.Items[link.Destination.ID].Processing
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if id == link.Source.ID && source != nil {
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isDeps = true
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dependancyOfIDs = append(dependancyOfIDs, getArgoName(source.GetName(), link.Destination.ID))
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}
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wourceWF := b.OriginWorkflow.Graph.Items[link.Destination.ID].Workflow
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if id == link.Source.ID && wourceWF != nil {
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isDeps = true
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dependancyOfIDs = append(dependancyOfIDs, getArgoName(wourceWF.GetName(), link.Destination.ID))
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}
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}
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return isDeps, dependancyOfIDs
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}
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func (b *ArgoBuilder) getArgoDependencies(id string) (dependencies []string) {
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for _, link := range b.OriginWorkflow.Graph.Links {
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source := b.OriginWorkflow.Graph.Items[link.Source.ID].Processing
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if id == link.Destination.ID && source != nil {
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dependency_name := getArgoName(source.GetName(), link.Source.ID)
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dependencies = append(dependencies, dependency_name)
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continue
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}
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}
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return
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}
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func getArgoName(raw_name string, component_id string) (formatedName string) {
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formatedName = strings.ReplaceAll(raw_name, " ", "-")
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formatedName += "-" + component_id
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formatedName = strings.ToLower(formatedName)
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return
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}
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