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appnetconfig_controller.go
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/
appnetconfig_controller.go
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/*
Copyright 2024.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package controller
import (
"context"
"os"
"os/exec"
"path/filepath"
"strings"
"k8s.io/apimachinery/pkg/runtime"
ctrl "sigs.k8s.io/controller-runtime"
"sigs.k8s.io/controller-runtime/pkg/client"
"sigs.k8s.io/controller-runtime/pkg/log"
apiv1 "github.com/appnet-org/appnet/api/v1"
)
// AppNetConfigReconciler reconciles a AppNetConfig object
type AppNetConfigReconciler struct {
client.Client
Scheme *runtime.Scheme
}
//+kubebuilder:rbac:groups=api.core.appnet.io,resources=appnetconfigs,verbs=get;list;watch;create;update;patch;delete
//+kubebuilder:rbac:groups=api.core.appnet.io,resources=appnetconfigs/status,verbs=get;update;patch
//+kubebuilder:rbac:groups=api.core.appnet.io,resources=appnetconfigs/finalizers,verbs=update
// Reconcile is part of the main kubernetes reconciliation loop which aims to
// move the current state of the cluster closer to the desired state.
// TODO(user): Modify the Reconcile function to compare the state specified by
// the AppNetConfig object against the actual cluster state, and then
// perform operations to make the cluster state reflect the state specified by
// the user.
//
// For more details, check Reconcile and its Result here:
// - https://pkg.go.dev/sigs.k8s.io/controller-runtime@v0.17.0/pkg/reconcile
func (r *AppNetConfigReconciler) Reconcile(ctx context.Context, req ctrl.Request) (ctrl.Result, error) {
_ = log.FromContext(ctx)
l := log.FromContext(ctx)
// TODO: add logic here
config := &apiv1.AppNetConfig{}
err := r.Get(ctx, req.NamespacedName, config)
if err != nil {
// For AppNet resource deletion
l.Info("Deleting AppNetConfig...")
// TODO: Only delete the envoy filters that are associated with this AppNetConfig
exec.Command("kubectl", "delete", "envoyfilters", "--all").CombinedOutput()
return ctrl.Result{}, client.IgnoreNotFound(err)
}
backend := config.Spec.Backend
// temporary fix for sidecar backend
if backend == "sidecar" {
backend = "envoy"
}
client_service := config.Spec.ClientService
server_service := config.Spec.ServerService
client_elements := config.Spec.ClientChain
server_elements := config.Spec.ServerChain
any_elements := config.Spec.AnyChain
pair_elements := config.Spec.PairChain
method := config.Spec.Method
proto := config.Spec.Proto
app_name := config.Spec.AppName
app_manifest_file := config.Spec.AppManifestFile
safe := config.Spec.Safe
// Call addonctl
l.Info("Reconciling AppNetConfig", "Safe", safe, "Name", config.Name, "Namespace", config.Namespace, "RPC Method", method,
"Backend:", backend, "Client Service", client_service, "Server Service", server_service, "client-side Elements", client_elements,
"server-side Elements", server_elements, "unconstraint Elements", any_elements, "pair Elements", pair_elements)
ConvertToAppNetSpec(app_name, backend, app_manifest_file, client_service, server_service, method, proto, "config.yaml", client_elements, server_elements,
any_elements, pair_elements)
compilerDir := filepath.Join(os.Getenv("APPNET_DIR"), "compiler/compiler")
compile_cmd := exec.Command("python", filepath.Join(compilerDir, "main.py"), "-s", "config.yaml", "-b", backend)
compile_output, compile_err := compile_cmd.CombinedOutput()
// Check if there was an error running the command
if compile_err != nil {
l.Info("Reconciling AppNetConfig", "Error running compiler: %s\nOutput:\n%s\n", compile_err, string(compile_output))
return ctrl.Result{}, client.IgnoreNotFound(err)
}
l.Info("All elements compiled successfully - deploying to envoy")
kubectl_cmd := exec.Command("kubectl", "apply", "-Rf", strings.ReplaceAll(filepath.Join(compilerDir, "graph/generated/APP-deploy"), "APP", app_name))
kubectl_output, kubectl_err := kubectl_cmd.CombinedOutput()
// Check if there was an error running the command
if kubectl_err != nil {
l.Info("Reconciling AppNetConfig", "Error running kubectl: %s\nOutput:\n%s\n", kubectl_err, string(kubectl_output))
return ctrl.Result{}, client.IgnoreNotFound(err)
}
// Deploy waypoint proxies
if backend == "ambient" {
waypoint_cmd := exec.Command("bash", strings.ReplaceAll(filepath.Join(compilerDir, "graph/generated/APP-deploy/waypoint_create.sh"), "APP", app_name))
waypoint_output, waypoint_err := waypoint_cmd.CombinedOutput()
// Check if there was an error running the command
if waypoint_err != nil {
l.Info("Reconciling AppNetConfig", "Error running istioctl waypoint: %s\nOutput:\n%s\n", waypoint_err, string(waypoint_output))
return ctrl.Result{}, client.IgnoreNotFound(err)
}
// Attach volume to waypoint
service_account := find_service_account(strings.ReplaceAll(filepath.Join(compilerDir, "graph/generated/APP-deploy/waypoint_create.sh"), "APP", app_name))
l.Info("Reconciling AppNetConfig", server_service, service_account)
attach_volume_to_waypoint(server_service, service_account)
}
l.Info("All elemenets deployed - Reconciliation finished!")
return ctrl.Result{}, nil
}
// SetupWithManager sets up the controller with the Manager.
func (r *AppNetConfigReconciler) SetupWithManager(mgr ctrl.Manager) error {
return ctrl.NewControllerManagedBy(mgr).
For(&apiv1.AppNetConfig{}).
Complete(r)
}