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op_ensureruntimeconfig.go
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op_ensureruntimeconfig.go
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// Copyright 2022 Namespace Labs Inc; 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.
package kubeops
import (
"context"
"encoding/json"
applycorev1 "k8s.io/client-go/applyconfigurations/core/v1"
"namespacelabs.dev/foundation/framework/kubernetes/kubedef"
"namespacelabs.dev/foundation/framework/rpcerrors/multierr"
"namespacelabs.dev/foundation/internal/fnerrors"
"namespacelabs.dev/foundation/internal/planning/deploy"
"namespacelabs.dev/foundation/schema"
"namespacelabs.dev/foundation/std/execution"
"namespacelabs.dev/foundation/std/tasks"
)
const runtimeConfigVersion = 0
func registerEnsureRuntimeConfig() {
execution.RegisterFuncs(execution.Funcs[*kubedef.OpEnsureRuntimeConfig]{
Handle: func(ctx context.Context, inv *schema.SerializedInvocation, ensure *kubedef.OpEnsureRuntimeConfig) (*execution.HandleResult, error) {
action := tasks.Action("kubernetes.ensure-runtime-config").
Scope(ensure.Deployable.GetPackageRef().AsPackageName()).
Arg("deployable", ensure.Deployable.GetPackageRef().Canonical()).
HumanReadablef(inv.Description)
return tasks.Return(ctx, action, func(ctx context.Context) (*execution.HandleResult, error) {
data := map[string]string{}
output := &kubedef.EnsureRuntimeConfigOutput{}
// We here generate the runtime and resource configuration which
// is injected to servers. Ideally this configmap would be
// immutable, but in order to minimize churn we update buildvcs
// in place, if one is available.
//
// The name of the configmap is derived from the contents of the
// runtime and resource configurations. If these don't change,
// then the resulting configmap will be the same (albeit with an
// updated buildvcs).
hashInputs := map[string]any{
"version": runtimeConfigVersion,
}
if ensure.RuntimeConfig != nil {
serializedConfig, err := json.Marshal(ensure.RuntimeConfig)
if err != nil {
return nil, fnerrors.InternalError("failed to serialize runtime configuration: %w", err)
}
data["runtime.json"] = string(serializedConfig)
hashInputs["runtime.json"] = string(serializedConfig)
output.SerializedRuntimeJson = string(serializedConfig)
}
if ensure.BuildVcs != nil {
serializedConfig, err := json.Marshal(ensure.BuildVcs)
if err != nil {
return nil, fnerrors.InternalError("failed to serialize runtime configuration: %w", err)
}
// Deliberately not an hash input.
data["buildvcs.json"] = string(serializedConfig)
}
resourceData, err := deploy.BuildResourceMap(ctx, ensure.Dependency)
if err != nil {
return nil, err
}
if len(ensure.InjectResource) > 0 {
if resourceData == nil {
resourceData = map[string]deploy.RawJSONObject{}
}
var errs []error
for _, injected := range ensure.InjectResource {
var m deploy.RawJSONObject
if err := json.Unmarshal(injected.SerializedJson, &m); err != nil {
errs = append(errs, err)
} else {
resourceData[injected.GetResourceRef().Canonical()] = m
}
}
if err := multierr.New(errs...); err != nil {
return nil, fnerrors.InternalError("failed to handle injected resources: %w", err)
}
}
if len(resourceData) > 0 {
serializedConfig, err := json.Marshal(resourceData)
if err != nil {
return nil, fnerrors.InternalError("failed to serialize resource configuration: %w", err)
}
data["resources.json"] = string(serializedConfig)
hashInputs["resources.json"] = string(serializedConfig)
output.SerializedResourceJson = string(serializedConfig)
}
if len(data) > 0 && ensure.PersistConfiguration {
configDigest, err := schema.DigestOf(hashInputs)
if err != nil {
return nil, fnerrors.InternalError("failed to digest runtime configuration: %w", err)
}
deploymentId := kubedef.MakeDeploymentId(ensure.Deployable)
configId := kubedef.MakeResourceName(deploymentId, configDigest.Hex[:8], "runtimecfg", "namespace", "so")
cluster, err := kubedef.InjectedKubeClusterNamespace(ctx)
if err != nil {
return nil, err
}
annotations := kubedef.MakeAnnotations(cluster.KubeConfig().Environment)
labels := kubedef.MakeLabels(cluster.KubeConfig().Environment, ensure.Deployable)
if _, err := cluster.Cluster().(kubedef.KubeCluster).PreparedClient().Clientset.CoreV1().
ConfigMaps(cluster.KubeConfig().Namespace).
Apply(ctx,
applycorev1.ConfigMap(configId, cluster.KubeConfig().Namespace).
WithAnnotations(annotations).
WithLabels(labels).
WithLabels(map[string]string{
kubedef.K8sKind: kubedef.K8sRuntimeConfigKind,
}).
WithData(data), kubedef.Ego()); err != nil {
return nil, err
}
output.ConfigId = configId
}
return &execution.HandleResult{
Outputs: []execution.Output{
{InstanceID: kubedef.RuntimeConfigOutput(ensure.Deployable), Message: output},
},
}, nil
})
},
PlanOrder: func(ctx context.Context, ensure *kubedef.OpEnsureRuntimeConfig) (*schema.ScheduleOrder, error) {
cluster, err := kubedef.InjectedKubeClusterNamespace(ctx)
if err != nil {
return nil, err
}
return &schema.ScheduleOrder{
SchedAfterCategory: []string{kubedef.MakeNamespaceCat(cluster.KubeConfig().Namespace)},
}, nil
},
})
}