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implement task for configuring the nodes
Signed-off-by: Dmitry Shmulevich <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,176 @@ | ||
| /* | ||
| * Copyright (c) 2024, NVIDIA CORPORATION. All rights reserved. | ||
| * | ||
| * 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 engine | ||
|
|
||
| import ( | ||
| "bytes" | ||
| "context" | ||
| "encoding/json" | ||
| "fmt" | ||
| "os/exec" | ||
| "sync" | ||
| "time" | ||
|
|
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| "github.com/go-logr/logr" | ||
| "gopkg.in/yaml.v3" | ||
| "k8s.io/client-go/kubernetes" | ||
|
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| "github.com/NVIDIA/knavigator/pkg/config" | ||
| ) | ||
|
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| type ConfigureTask struct { | ||
| BaseTask | ||
| configureTaskParams | ||
|
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| client *kubernetes.Clientset | ||
| } | ||
|
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| type configureTaskParams struct { | ||
| Nodes []virtualNode `yaml:"nodes"` | ||
| Timeout time.Duration `yaml:"timeout"` | ||
| } | ||
|
|
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| type virtualNode struct { | ||
| Type string `yaml:"type" json:"type"` | ||
| Count int `yaml:"count" json:"count"` | ||
| Annotations map[string]string `yaml:"annotations,omitempty" json:"annotations,omitempty"` | ||
| Labels map[string]string `yaml:"labels,omitempty" json:"labels,omitempty"` | ||
| Conditions []map[string]string `yaml:"conditions,omitempty" json:"conditions,omitempty"` | ||
| } | ||
|
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| func newConfigureTask(log logr.Logger, client *kubernetes.Clientset, cfg *config.Task) (*ConfigureTask, error) { | ||
| if client == nil { | ||
| return nil, fmt.Errorf("%s/%s: Kubernetes client is not set", cfg.Type, cfg.ID) | ||
| } | ||
|
|
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| task := &ConfigureTask{ | ||
| BaseTask: BaseTask{ | ||
| log: log, | ||
| taskType: TaskConfigure, | ||
| taskID: cfg.ID, | ||
| }, | ||
| client: client, | ||
| } | ||
|
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| if err := task.validate(cfg.Params); err != nil { | ||
| return nil, err | ||
| } | ||
|
|
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| return task, nil | ||
| } | ||
|
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| // validate initializes and validates parameters for ConfigureTask | ||
| func (task *ConfigureTask) validate(params map[string]interface{}) error { | ||
| data, err := yaml.Marshal(params) | ||
| if err != nil { | ||
| return fmt.Errorf("failed to parse parameters in %s task %s: %v", task.taskType, task.taskID, err) | ||
| } | ||
| if err = yaml.Unmarshal(data, &task.configureTaskParams); err != nil { | ||
| return fmt.Errorf("failed to parse parameters in %s task %s: %v", task.taskType, task.taskID, err) | ||
| } | ||
|
|
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| if task.Timeout == 0 { | ||
| return fmt.Errorf("%s: missing parameter 'timeout'", task.ID()) | ||
| } | ||
|
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| return nil | ||
| } | ||
|
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| // Exec implements Runnable interface | ||
| func (task *ConfigureTask) Exec(ctx context.Context) (err error) { | ||
| ctx, cancel := context.WithTimeout(ctx, task.Timeout) | ||
| defer cancel() | ||
|
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| errs := make(chan error) | ||
| var wg sync.WaitGroup | ||
| wg.Add(1) | ||
|
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| go func() { | ||
| wg.Wait() | ||
| close(errs) | ||
| }() | ||
|
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| go func() { | ||
| defer wg.Done() | ||
| if err := task.updateVirtualNodes(ctx); err != nil { | ||
| errs <- err | ||
| } | ||
| }() | ||
|
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| for e := range errs { | ||
| if e != nil { | ||
| task.log.Error(e, "configuration error") | ||
| err = e | ||
| } | ||
| } | ||
|
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| return | ||
| } | ||
|
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| func (task *ConfigureTask) updateVirtualNodes(ctx context.Context) error { | ||
| if len(task.Nodes) == 0 { | ||
| return nil | ||
| } | ||
|
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| nodeExpr, err := nodes2json(task.Nodes) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
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| // update helm repo | ||
| args := []string{"repo", "add", "--force-update", "knavigator", "https://nvidia.github.io/knavigator/helm-charts"} | ||
|
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| task.log.V(4).Info("Updating helm repo") | ||
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| if err = runCommand(ctx, task.log, "helm", args); err != nil { | ||
| return err | ||
| } | ||
|
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| // upgrade helm chart | ||
| args = []string{"upgrade", "--install", "virtual-nodes", "knavigator/virtual-nodes", | ||
| "--wait", "--set-json", nodeExpr} | ||
|
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| task.log.V(4).Info("Updating nodes", "cmd", append([]string{"helm"}, args...)) | ||
|
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| return runCommand(ctx, task.log, "helm", args) | ||
| } | ||
|
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| func nodes2json(nodes []virtualNode) (string, error) { | ||
| data, err := json.Marshal(nodes) | ||
| if err != nil { | ||
| return "", err | ||
| } | ||
| return fmt.Sprintf("nodes=%s", string(data)), nil | ||
| } | ||
|
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| func runCommand(ctx context.Context, log logr.Logger, exe string, args []string) error { | ||
| command := exec.CommandContext(ctx, exe, args...) | ||
|
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| var stdout, stderr bytes.Buffer | ||
| command.Stdout = &stdout | ||
| command.Stderr = &stderr | ||
|
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| if err := command.Run(); err != nil { | ||
| log.Error(err, "failed to run command", | ||
| "stdout", stdout.String(), "stderr", stderr.String()) | ||
| return err | ||
| } | ||
|
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| log.V(4).Info(stdout.String()) | ||
|
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| return nil | ||
| } |
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