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main.go
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main.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 main
import (
"context"
"encoding/json"
"fmt"
"google.golang.org/protobuf/proto"
"namespacelabs.dev/foundation/framework/kubernetes/kubedef"
"namespacelabs.dev/foundation/framework/provisioning"
"namespacelabs.dev/foundation/schema"
"namespacelabs.dev/foundation/std/secrets"
"namespacelabs.dev/foundation/universe/db/maria"
"namespacelabs.dev/foundation/universe/db/maria/incluster"
"namespacelabs.dev/foundation/universe/db/maria/internal/toolcommon"
)
type tool struct{}
func main() {
h := provisioning.NewHandlers()
henv := h.MatchEnv(&schema.Environment{Runtime: "kubernetes"})
henv.HandleStack(tool{})
provisioning.Handle(h)
}
func collectDatabases(server *schema.Server, owner string, internalEndpoint *schema.Endpoint) (map[schema.PackageName][]*maria.Database, error) {
dbs := map[schema.PackageName][]*maria.Database{}
for _, alloc := range server.Allocation {
for _, instance := range alloc.Instance {
for _, instantiate := range instance.Instantiated {
if instantiate.GetPackageName() == owner && instantiate.GetType() == "Database" {
in := &incluster.Database{}
if err := proto.Unmarshal(instantiate.Constructor.Value, in); err != nil {
return nil, err
}
db := &maria.Database{
Name: in.Name,
SchemaFile: in.SchemaFile,
HostedAt: &maria.Endpoint{
Address: internalEndpoint.AllocatedName,
Port: uint32(internalEndpoint.Port.ContainerPort),
},
}
dbs[schema.PackageName(instance.InstanceOwner)] = append(dbs[schema.PackageName(instance.InstanceOwner)], db)
}
}
}
}
return dbs, nil
}
func internalEndpoint(s *schema.Stack) *schema.Endpoint {
for _, e := range s.Endpoint {
if e.ServiceName == "mariadb" && e.ServerOwner == "namespacelabs.dev/foundation/universe/db/maria/server" {
return e
}
}
return nil
}
func (tool) Apply(ctx context.Context, r provisioning.StackRequest, out *provisioning.ApplyOutput) error {
initArgs := []string{}
col, err := secrets.Collect(r.Focus.Server)
if err != nil {
return err
}
// TODO: creds should be definable per db instance #217
for _, secret := range col.SecretsOf("namespacelabs.dev/foundation/universe/db/maria/incluster/creds") {
switch secret.Name {
case "mariadb-password-file":
initArgs = append(initArgs, fmt.Sprintf("--mariadb_password_file=%s", secret.FromPath))
default:
}
}
endpoint := internalEndpoint(r.Stack)
value, err := json.Marshal(endpoint)
if err != nil {
return err
}
out.Extensions = append(out.Extensions, kubedef.ExtendContainer{
With: &kubedef.ContainerExtension{
Args: []string{fmt.Sprintf("--mariadb_endpoint=%s", value)},
// XXX remove when backwards compat no longer necessary.
ArgTuple: []*kubedef.ContainerExtension_ArgTuple{{
Name: "mariadb_endpoint",
Value: string(value),
}},
}})
dbs, err := collectDatabases(r.Focus.Server, r.PackageOwner(), endpoint)
if err != nil {
return err
}
return toolcommon.Apply(ctx, r, dbs, "incluster", initArgs, out)
}
func (tool) Delete(ctx context.Context, r provisioning.StackRequest, out *provisioning.DeleteOutput) error {
return toolcommon.Delete(r, "incluster", out)
}