142 lines
4.3 KiB
Go
142 lines
4.3 KiB
Go
// Copyright 2024 Matthew Rich <matthewrich.conf@gmail.com>. All rights reserved.
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// The resource package handles CRUD operations on resources and YAML (de)serialization
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package resource
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import (
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"context"
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_ "encoding/json"
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_ "fmt"
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_ "gopkg.in/yaml.v3"
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_ "net/url"
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"gitea.rosskeen.house/rosskeen.house/machine"
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)
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type ResourceSelector func(r *Declaration) bool
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type Resource interface {
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Type() string
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StateMachine() machine.Stater
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URI() string
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SetURI(string) error
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ResolveId(context.Context) string
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ResourceLoader
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StateTransformer
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ResourceReader
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ResourceValidator
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Clone() Resource
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}
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type ResourceValidator interface {
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Validate() error
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}
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type ResourceCreator interface {
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Create(context.Context) error
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}
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type ResourceReader interface {
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Read(context.Context) ([]byte, error)
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}
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type ResourceUpdater interface {
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Update() error
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}
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type ResourceDeleter interface {
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Delete() error
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}
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type ResourceDecoder struct {
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}
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func NewResource(uri string) Resource {
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r, e := ResourceTypes.New(uri)
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if e == nil {
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return r
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}
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return nil
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}
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func StorageMachine(sub machine.Subscriber) machine.Stater {
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// start_destroy -> absent -> start_create -> present -> start_destroy
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stater := machine.New("unknown")
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stater.AddStates("unkonwn", "absent", "start_create", "present", "start_delete", "start_read", "start_update")
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stater.AddTransition("create", machine.States("unknown", "absent"), "start_create")
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if e := stater.AddSubscription("create", sub); e != nil {
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return nil
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}
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stater.AddTransition("created", machine.States("start_create"), "present")
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if e := stater.AddSubscription("created", sub); e != nil {
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return nil
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}
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stater.AddTransition("exists", machine.States("unknown", "absent"), "present")
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if e := stater.AddSubscription("exists", sub); e != nil {
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return nil
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}
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stater.AddTransition("notexists", machine.States("*"), "absent")
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if e := stater.AddSubscription("notexists", sub); e != nil {
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return nil
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}
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stater.AddTransition("read", machine.States("*"), "start_read")
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if e := stater.AddSubscription("read", sub); e != nil {
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return nil
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}
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stater.AddTransition("state_read", machine.States("start_read"), "present")
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stater.AddTransition("update", machine.States("*"), "start_update")
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if e := stater.AddSubscription("update", sub); e != nil {
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return nil
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}
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stater.AddTransition("updated", machine.States("start_update"), "present")
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stater.AddTransition("delete", machine.States("*"), "start_delete")
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if e := stater.AddSubscription("delete", sub); e != nil {
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return nil
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}
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stater.AddTransition("deleted", machine.States("start_delete"), "absent")
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if e := stater.AddSubscription("deleted", sub); e != nil {
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return nil
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}
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return stater
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}
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func ProcessMachine(sub machine.Subscriber) machine.Stater {
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// "enum": [ "created", "restarting", "running", "paused", "exited", "dead" ]
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stater := machine.New("unknown")
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stater.AddStates("unkonwn", "absent", "start_create", "present", "created", "restarting", "running", "paused", "exited", "dead", "start_delete", "start_read", "start_update")
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stater.AddTransition("create", machine.States("unknown", "absent"), "start_create")
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if e := stater.AddSubscription("create", sub); e != nil {
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return nil
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}
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stater.AddTransition("created", machine.States("start_create"), "present")
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if e := stater.AddSubscription("created", sub); e != nil {
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return nil
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}
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stater.AddTransition("exists", machine.States("unknown", "absent"), "present")
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if e := stater.AddSubscription("exists", sub); e != nil {
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return nil
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}
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stater.AddTransition("notexists", machine.States("*"), "absent")
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if e := stater.AddSubscription("notexists", sub); e != nil {
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return nil
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}
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stater.AddTransition("read", machine.States("*"), "start_read")
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if e := stater.AddSubscription("read", sub); e != nil {
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return nil
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}
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stater.AddTransition("state_read", machine.States("start_read"), "present")
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stater.AddTransition("update", machine.States("*"), "start_update")
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if e := stater.AddSubscription("update", sub); e != nil {
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return nil
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}
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stater.AddTransition("updated", machine.States("start_update"), "present")
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stater.AddTransition("delete", machine.States("*"), "start_delete")
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if e := stater.AddSubscription("delete", sub); e != nil {
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return nil
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}
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stater.AddTransition("deleted", machine.States("start_delete"), "absent")
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if e := stater.AddSubscription("deleted", sub); e != nil {
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return nil
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}
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return stater
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}
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