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Lay the foundations for the kubernetes provider (#621)
This commit: * Adds the provider struct and the empty functions for discovering and scanning. * Creates a kubernetes client for accessing the kubernetes API * Adds a configuration loader which looks for environment variables prefixed with VMCLARITY_KUBERNETES * Adds the Kubernetes provider type to the api spec * Updates uibackend to handle the kubernetes provider type * Sdds location field to the container asset type which can be used by the provider to keep track of where a container was found * Support kubernetes provider configuration in helm-chart
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,50 @@ | ||
| // Copyright © 2023 Cisco Systems, Inc. and its affiliates. | ||
| // 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 kubernetes | ||
|
|
||
| import ( | ||
| "fmt" | ||
|
|
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| "github.com/spf13/viper" | ||
| ) | ||
|
|
||
| const ( | ||
| DefaultEnvPrefix = "VMCLARITY_KUBERNETES" | ||
| ) | ||
|
|
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| type Config struct { | ||
| // KubeConfig defines a path to a kubeconfig file to use to connect to | ||
| // the Kubernetes API | ||
| KubeConfig string `mapstructure:"kubeconfig"` | ||
| } | ||
|
|
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| func NewConfig() (*Config, error) { | ||
| // Avoid modifying the global instance | ||
| v := viper.New() | ||
|
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| v.SetEnvPrefix(DefaultEnvPrefix) | ||
| v.AllowEmptyEnv(true) | ||
| v.AutomaticEnv() | ||
|
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| _ = v.BindEnv("kubeconfig") | ||
|
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| config := &Config{} | ||
| if err := v.Unmarshal(config); err != nil { | ||
| return nil, fmt.Errorf("failed to parse provider configuration. Provider=Kubernetes: %w", err) | ||
| } | ||
|
|
||
| return config, nil | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,87 @@ | ||
| // Copyright © 2023 Cisco Systems, Inc. and its affiliates. | ||
| // 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. | ||
|
|
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| package kubernetes | ||
|
|
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| import ( | ||
| "context" | ||
| "fmt" | ||
|
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| "k8s.io/client-go/kubernetes" | ||
| "k8s.io/client-go/rest" | ||
| "k8s.io/client-go/tools/clientcmd" | ||
|
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| "github.com/openclarity/vmclarity/api/models" | ||
| "github.com/openclarity/vmclarity/pkg/orchestrator/provider" | ||
| ) | ||
|
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| type Provider struct { | ||
| clientset kubernetes.Interface | ||
| config *Config | ||
| } | ||
|
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| var _ provider.Provider = &Provider{} | ||
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| func New(ctx context.Context) (provider.Provider, error) { | ||
| config, err := NewConfig() | ||
| if err != nil { | ||
| return nil, fmt.Errorf("invalid configuration: %w", err) | ||
| } | ||
|
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| var clientConfig *rest.Config | ||
| if config.KubeConfig == "" { | ||
| // If KubeConfig config option not set, assume we're running | ||
| // incluster. | ||
| clientConfig, err = rest.InClusterConfig() | ||
| if err != nil { | ||
| return nil, fmt.Errorf("unable to load in-cluster client configuration: %w", err) | ||
| } | ||
| } else { | ||
| cc, err := clientcmd.LoadFromFile(config.KubeConfig) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("unable to load kubeconfig from %s: %w", config.KubeConfig, err) | ||
| } | ||
| clientConfig, err = clientcmd.NewNonInteractiveClientConfig(*cc, "", &clientcmd.ConfigOverrides{}, nil).ClientConfig() | ||
| if err != nil { | ||
| return nil, fmt.Errorf("unable to create client configuration from the provided kubeconfig file: %w", err) | ||
| } | ||
| } | ||
|
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| clientset, err := kubernetes.NewForConfig(clientConfig) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("unable to create kubernetes clientset: %w", err) | ||
| } | ||
|
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| return &Provider{ | ||
| clientset: clientset, | ||
| config: config, | ||
| }, nil | ||
| } | ||
|
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| func (p *Provider) Kind() models.CloudProvider { | ||
| return models.Kubernetes | ||
| } | ||
|
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| func (p *Provider) DiscoverAssets(ctx context.Context) ([]models.AssetType, error) { | ||
| return nil, fmt.Errorf("not implemented") | ||
| } | ||
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| func (p *Provider) RunAssetScan(context.Context, *provider.ScanJobConfig) error { | ||
| return fmt.Errorf("not implemented") | ||
| } | ||
|
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| func (p *Provider) RemoveAssetScan(context.Context, *provider.ScanJobConfig) error { | ||
| return fmt.Errorf("not implemented") | ||
| } |
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