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planner.go
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planner.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 kubernetes
import (
"bytes"
"context"
"fmt"
specs "github.com/opencontainers/image-spec/specs-go/v1"
"google.golang.org/protobuf/types/known/anypb"
"namespacelabs.dev/foundation/framework/kubernetes/kubedef"
"namespacelabs.dev/foundation/internal/artifacts/registry"
"namespacelabs.dev/foundation/internal/console/colors"
"namespacelabs.dev/foundation/internal/fnerrors"
"namespacelabs.dev/foundation/internal/runtime"
"namespacelabs.dev/foundation/internal/runtime/rtypes"
fnschema "namespacelabs.dev/foundation/schema"
"namespacelabs.dev/foundation/std/cfg"
"namespacelabs.dev/foundation/std/tasks"
"sigs.k8s.io/yaml"
)
type Planner struct {
Configuration cfg.Configuration
fetchSystemInfo FetchSystemInfoFunc
underlying *Cluster
target clusterTarget
registry registry.Manager
}
var _ runtime.Planner = Planner{}
type FetchSystemInfoFunc func(context.Context) (*kubedef.SystemInfo, error)
func NewPlanner(ctx context.Context, env cfg.Context, fetchSystemInfo FetchSystemInfoFunc) (Planner, error) {
registry, err := registry.GetRegistry(ctx, env)
if err != nil {
return Planner{}, err
}
return NewPlannerWithRegistry(env, registry, fetchSystemInfo), nil
}
func NewPlannerWithRegistry(env cfg.Context, registry registry.Manager, fetchSystemInfo FetchSystemInfoFunc) Planner {
return Planner{Configuration: env.Configuration(), fetchSystemInfo: fetchSystemInfo, target: newTarget(env), registry: registry}
}
func (r Planner) PlanDeployment(ctx context.Context, d runtime.DeploymentSpec) (*runtime.DeploymentPlan, error) {
return planDeployment(ctx, r.target, d)
}
func (r Planner) PlanIngress(ctx context.Context, stack *fnschema.Stack, allFragments []*fnschema.IngressFragment) (*runtime.DeploymentPlan, error) {
return planIngress(ctx, r.target, stack, allFragments)
}
func (r Planner) KubernetesNamespace() string { return r.target.namespace }
func (r Planner) PrepareProvision(ctx context.Context) (*rtypes.ProvisionProps, error) {
systemInfo, err := r.fetchSystemInfo(ctx)
if err != nil {
return nil, err
}
return PrepareProvisionWith(r.target.env, r.target.namespace, systemInfo)
}
func (r Planner) ComputeBaseNaming(*fnschema.Naming) (*fnschema.ComputedNaming, error) {
// The default kubernetes integration has no assumptions regarding how ingress names are allocated.
return nil, nil
}
func (r Planner) TargetPlatforms(ctx context.Context) ([]specs.Platform, error) {
if !UseNodePlatformsForProduction && r.target.env.Purpose == fnschema.Environment_PRODUCTION {
return parsePlatforms(ProductionPlatforms)
}
systemInfo, err := r.fetchSystemInfo(ctx)
if err != nil {
return nil, err
}
return parsePlatforms(systemInfo.NodePlatform)
}
func (r Planner) Registry() registry.Manager {
return r.registry
}
func (r Planner) EnsureClusterNamespace(ctx context.Context) (runtime.ClusterNamespace, error) {
return r.ClusterNamespaceFor(r.underlying, r.underlying), nil
}
func (r Planner) ClusterNamespaceFor(parent runtime.Cluster, underlying *Cluster) *ClusterNamespace {
return &ClusterNamespace{parent: parent, underlying: underlying, target: r.target}
}
func planDeployment(ctx context.Context, target clusterTarget, d runtime.DeploymentSpec) (*runtime.DeploymentPlan, error) {
var state runtime.DeploymentPlan
deployOpts := deployOpts{
secrets: d.Secrets,
}
for _, deployable := range d.Specs {
var singleState serverRunState
if err := prepareDeployment(ctx, target, deployable, deployOpts, &singleState); err != nil {
return nil, err
}
// XXX verify we've consumed all endpoints.
for _, endpoint := range deployable.Endpoints {
if err := deployEndpoint(ctx, target, deployable, endpoint, &singleState); err != nil {
return nil, err
}
}
if at := tasks.Attachments(ctx); deployable.GetPackageRef().GetPackageName() != "" {
output := &bytes.Buffer{}
count := 0
for _, decl := range singleState.operations {
if count > 0 {
fmt.Fprintln(output, "---")
}
resource := decl.AppliedResource()
if resource == nil {
continue
}
count++
b, err := yaml.Marshal(resource)
if err == nil {
fmt.Fprintf(output, "%s\n", b)
// XXX ignoring errors
}
}
at.Attach(tasks.Output(fmt.Sprintf("%s.k8s-decl.yaml", deployable.GetPackageRef().GetPackageName()), "application/yaml"), output.Bytes())
}
for _, apply := range singleState.operations {
def, err := apply.ToDefinition(deployable.GetPackageRef().AsPackageName())
if err != nil {
return nil, err
}
state.Definitions = append(state.Definitions, def)
}
}
if !target.env.GetEphemeral() {
// TODO skip cleanup from CLI when orchestrator does it.
cleanup, err := anypb.New(&kubedef.OpCleanupRuntimeConfig{
Namespace: target.namespace,
CheckPods: deployAsPods(target.env),
})
if err != nil {
return nil, fnerrors.InternalError("failed to serialize cleanup: %w", err)
}
state.Definitions = append(state.Definitions, &fnschema.SerializedInvocation{
Description: "Kubernetes: cleanup unused resources",
Impl: cleanup,
})
}
state.Hints = append(state.Hints, fmt.Sprintf("Inspecting your deployment: %s",
colors.Ctx(ctx).Highlight.Apply(fmt.Sprintf("kubectl -n %s get pods", target.namespace))))
state.NamespaceReference = target.namespace
return &state, nil
}