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context.go
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context.go
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/*
* Copyright (C) 2023 Appvia Ltd <info@appvia.io>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package preload
import (
"bytes"
"context"
"encoding/json"
"k8s.io/apimachinery/pkg/runtime"
"sigs.k8s.io/controller-runtime/pkg/client"
terraformv1alpha1 "github.com/appvia/terranetes-controller/pkg/apis/terraform/v1alpha1"
"github.com/appvia/terranetes-controller/pkg/schema"
"github.com/appvia/terranetes-controller/pkg/utils/kubernetes"
"github.com/appvia/terranetes-controller/pkg/utils/preload"
)
// makeContext is responsible for creating a context for the preload command
func (c *Command) makeContext(ctx context.Context, data preload.Data) error {
c.logger.Info("attempting to provision the preload context in the cluster")
// @step: we need to create a runtime client
cc, err := kubernetes.NewRuntimeClient(schema.GetScheme())
if err != nil {
return err
}
// @step: create the new context resource
encoded := &bytes.Buffer{}
if err := data.MarshalTo(encoded); err != nil {
return err
}
txt := &terraformv1alpha1.Context{}
if err := json.NewDecoder(encoded).Decode(&txt.Spec.Variables); err != nil {
return err
}
txt.Name = c.Context
txt.Labels = map[string]string{
terraformv1alpha1.PreloadProviderLabel: c.Provider,
}
// @step: next we need to grab the current context if any
current := &terraformv1alpha1.Context{}
current.Name = txt.Name
// @step: check if the context exists
found, err := kubernetes.GetIfExists(ctx, cc, current)
if err != nil {
return err
}
if !found {
c.logger.Info("no existing context found, creating a new one")
return cc.Create(ctx, txt)
}
// @step: update the values in the context
original := current.DeepCopy()
for _, key := range data.Keys() {
encoded, err := data.Get(key).Marshal()
if err != nil {
return err
}
current.Spec.Variables[key] = runtime.RawExtension{Raw: encoded}
}
if err := cc.Patch(ctx, current, client.MergeFrom(original)); err != nil {
return err
}
c.logger.Info("successfully the updated context")
return nil
}