Default to SQLite rather than Postgres & Redis (#72)
* Initial rough draft switch to sqlite. * Rewrote cache implemenation. * Provide typed tasks. * Task cleanup. * Use same db for tasks. * Provide task queue registration and service container injection. * Added optional delay to tasks. Pool buffers when encoding. * Added tests for the task client and runner. * Added handler examples for caching and tasks. * Cleanup and documentation. * Use make in workflow. * Updated documentation. * Updated documentation.
This commit is contained in:
Mike Stefanello
GitHub
parent
5e9e502b42
commit
a096abd195
29 changed files with 956 additions and 910 deletions
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@ -103,6 +103,8 @@ func (f *Submission) setErrorMessages(err error) {
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message = "Enter a valid email address."
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case "eqfield":
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message = "Does not match."
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case "gte":
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message = fmt.Sprintf("Must be greater than or equal to %v.", ve.Param())
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default:
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message = "Invalid value."
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}
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92
pkg/handlers/cache.go
Normal file
92
pkg/handlers/cache.go
Normal file
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@ -0,0 +1,92 @@
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package handlers
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import (
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"errors"
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"github.com/labstack/echo/v4"
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"github.com/mikestefanello/pagoda/pkg/form"
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"github.com/mikestefanello/pagoda/pkg/page"
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"github.com/mikestefanello/pagoda/pkg/services"
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"github.com/mikestefanello/pagoda/templates"
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"time"
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)
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const (
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routeNameCache = "cache"
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routeNameCacheSubmit = "cache.submit"
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)
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type (
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Cache struct {
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cache *services.CacheClient
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*services.TemplateRenderer
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}
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cacheForm struct {
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Value string `form:"value"`
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form.Submission
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}
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)
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func init() {
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Register(new(Cache))
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}
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func (h *Cache) Init(c *services.Container) error {
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h.TemplateRenderer = c.TemplateRenderer
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h.cache = c.Cache
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return nil
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}
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func (h *Cache) Routes(g *echo.Group) {
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g.GET("/cache", h.Page).Name = routeNameCache
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g.POST("/cache", h.Submit).Name = routeNameCacheSubmit
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}
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func (h *Cache) Page(ctx echo.Context) error {
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p := page.New(ctx)
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p.Layout = templates.LayoutMain
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p.Name = templates.PageCache
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p.Title = "Set a cache entry"
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p.Form = form.Get[cacheForm](ctx)
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// Fetch the value from the cache
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value, err := h.cache.
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Get().
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Key("page_cache_example").
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Fetch(ctx.Request().Context())
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// Store the value in the page, so it can be rendered, if found
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switch {
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case err == nil:
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p.Data = value.(string)
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case errors.Is(err, services.ErrCacheMiss):
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default:
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return fail(err, "failed to fetch from cache")
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}
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return h.RenderPage(ctx, p)
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}
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func (h *Cache) Submit(ctx echo.Context) error {
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var input cacheForm
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if err := form.Submit(ctx, &input); err != nil {
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return err
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}
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// Set the cache
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err := h.cache.
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Set().
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Key("page_cache_example").
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Data(input.Value).
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Expiration(30 * time.Minute).
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Save(ctx.Request().Context())
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if err != nil {
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return fail(err, "unable to set cache")
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}
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form.Clear(ctx)
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return h.Page(ctx)
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}
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@ -2,7 +2,6 @@ package handlers
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import (
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"fmt"
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"github.com/go-playground/validator/v10"
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"github.com/labstack/echo/v4"
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"github.com/mikestefanello/pagoda/pkg/form"
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88
pkg/handlers/task.go
Normal file
88
pkg/handlers/task.go
Normal file
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@ -0,0 +1,88 @@
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package handlers
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import (
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"fmt"
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"github.com/mikestefanello/pagoda/pkg/msg"
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"time"
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"github.com/go-playground/validator/v10"
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"github.com/labstack/echo/v4"
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"github.com/mikestefanello/pagoda/pkg/form"
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"github.com/mikestefanello/pagoda/pkg/page"
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"github.com/mikestefanello/pagoda/pkg/services"
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"github.com/mikestefanello/pagoda/pkg/tasks"
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"github.com/mikestefanello/pagoda/templates"
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)
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const (
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routeNameTask = "task"
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routeNameTaskSubmit = "task.submit"
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)
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type (
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Task struct {
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tasks *services.TaskClient
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*services.TemplateRenderer
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}
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taskForm struct {
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Delay int `form:"delay" validate:"gte=0"`
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Message string `form:"message" validate:"required"`
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form.Submission
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}
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)
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func init() {
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Register(new(Task))
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}
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func (h *Task) Init(c *services.Container) error {
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h.TemplateRenderer = c.TemplateRenderer
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h.tasks = c.Tasks
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return nil
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}
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func (h *Task) Routes(g *echo.Group) {
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g.GET("/task", h.Page).Name = routeNameTask
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g.POST("/task", h.Submit).Name = routeNameTaskSubmit
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}
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func (h *Task) Page(ctx echo.Context) error {
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p := page.New(ctx)
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p.Layout = templates.LayoutMain
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p.Name = templates.PageTask
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p.Title = "Create a task"
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p.Form = form.Get[taskForm](ctx)
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return h.RenderPage(ctx, p)
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}
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func (h *Task) Submit(ctx echo.Context) error {
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var input taskForm
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err := form.Submit(ctx, &input)
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switch err.(type) {
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case nil:
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case validator.ValidationErrors:
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return h.Page(ctx)
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default:
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return err
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}
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// Insert the task
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err = h.tasks.New(tasks.ExampleTask{
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Message: input.Message,
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}).
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Wait(time.Duration(input.Delay) * time.Second).
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Save()
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if err != nil {
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return fail(err, "unable to create a task")
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}
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msg.Success(ctx, fmt.Sprintf("The task has been created. Check the logs in %d seconds.", input.Delay))
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form.Clear(ctx)
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return h.Page(ctx)
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}
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@ -10,7 +10,6 @@ import (
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"github.com/mikestefanello/pagoda/pkg/log"
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"github.com/mikestefanello/pagoda/pkg/services"
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libstore "github.com/eko/gocache/lib/v4/store"
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"github.com/labstack/echo/v4"
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)
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@ -35,7 +34,7 @@ func ServeCachedPage(t *services.TemplateRenderer) echo.MiddlewareFunc {
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if err != nil {
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switch {
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case errors.Is(err, &libstore.NotFound{}):
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case errors.Is(err, services.ErrCacheMiss):
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case context.IsCanceledError(err):
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return nil
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default:
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@ -4,28 +4,39 @@ import (
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"context"
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"errors"
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"fmt"
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"sync"
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"time"
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"github.com/eko/gocache/lib/v4/cache"
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"github.com/eko/gocache/lib/v4/marshaler"
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libstore "github.com/eko/gocache/lib/v4/store"
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redisstore "github.com/eko/gocache/store/redis/v4"
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"github.com/mikestefanello/pagoda/config"
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"github.com/redis/go-redis/v9"
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"github.com/maypok86/otter"
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)
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type (
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// CacheClient is the client that allows you to interact with the cache
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CacheClient struct {
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// Client stores the client to the underlying cache service
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Client *redis.Client
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// ErrCacheMiss indicates that the requested key does not exist in the cache
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var ErrCacheMiss = errors.New("cache miss")
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// cache stores the cache interface
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cache *cache.Cache[any]
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type (
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// CacheStore provides an interface for cache storage
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CacheStore interface {
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// get attempts to get a cached value
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get(context.Context, *CacheGetOp) (any, error)
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// set attempts to set an entry in the cache
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set(context.Context, *CacheSetOp) error
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// flush removes a given key and/or tags from the cache
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flush(context.Context, *CacheFlushOp) error
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// close shuts down the cache storage
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close()
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}
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// cacheSet handles chaining a set operation
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cacheSet struct {
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// CacheClient is the client that allows you to interact with the cache
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CacheClient struct {
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// store holds the Cache storage
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store CacheStore
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}
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// CacheSetOp handles chaining a set operation
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CacheSetOp struct {
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client *CacheClient
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key string
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group string
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@ -34,76 +45,69 @@ type (
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tags []string
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}
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// cacheGet handles chaining a get operation
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cacheGet struct {
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client *CacheClient
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key string
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group string
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dataType any
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// CacheGetOp handles chaining a get operation
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CacheGetOp struct {
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client *CacheClient
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key string
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group string
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}
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// cacheFlush handles chaining a flush operation
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cacheFlush struct {
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// CacheFlushOp handles chaining a flush operation
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CacheFlushOp struct {
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client *CacheClient
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key string
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group string
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tags []string
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}
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// inMemoryCacheStore is a cache store implementation in memory
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inMemoryCacheStore struct {
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store *otter.CacheWithVariableTTL[string, any]
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tagIndex *tagIndex
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}
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// tagIndex maintains an index to support cache tags for in-memory cache stores.
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// There is a performance and memory impact to using cache tags since set and get operations using tags will require
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// locking, and we need to keep track of this index in order to keep everything in sync.
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// If using something like Redis for caching, you can leverage sets to store the index.
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// Cache tags can be useful and convenient, so you should decide if your app benefits enough from this.
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// As it stands here, there is no limiting how much memory this will consume and it will track all keys
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// and tags added and removed from the cache. You could store these in the cache itself but allowing these to
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// be evicted poses challenges.
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tagIndex struct {
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sync.Mutex
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tags map[string]map[string]struct{} // tag->keys
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keys map[string]map[string]struct{} // key->tags
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}
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)
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// NewCacheClient creates a new cache client
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func NewCacheClient(cfg *config.Config) (*CacheClient, error) {
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// Determine the database based on the environment
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db := cfg.Cache.Database
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if cfg.App.Environment == config.EnvTest {
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db = cfg.Cache.TestDatabase
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}
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// Connect to the cache
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c := &CacheClient{}
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c.Client = redis.NewClient(&redis.Options{
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Addr: fmt.Sprintf("%s:%d", cfg.Cache.Hostname, cfg.Cache.Port),
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Password: cfg.Cache.Password,
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DB: db,
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})
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if _, err := c.Client.Ping(context.Background()).Result(); err != nil {
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return c, err
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}
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// Flush the database if this is the test environment
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if cfg.App.Environment == config.EnvTest {
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if err := c.Client.FlushDB(context.Background()).Err(); err != nil {
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return c, err
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}
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}
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cacheStore := redisstore.NewRedis(c.Client)
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c.cache = cache.New[any](cacheStore)
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return c, nil
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func NewCacheClient(store CacheStore) *CacheClient {
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return &CacheClient{store: store}
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}
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// Close closes the connection to the cache
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func (c *CacheClient) Close() error {
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return c.Client.Close()
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func (c *CacheClient) Close() {
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c.store.close()
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}
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// Set creates a cache set operation
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func (c *CacheClient) Set() *cacheSet {
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return &cacheSet{
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func (c *CacheClient) Set() *CacheSetOp {
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return &CacheSetOp{
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client: c,
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}
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}
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// Get creates a cache get operation
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func (c *CacheClient) Get() *cacheGet {
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return &cacheGet{
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func (c *CacheClient) Get() *CacheGetOp {
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return &CacheGetOp{
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client: c,
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}
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}
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// Flush creates a cache flush operation
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func (c *CacheClient) Flush() *cacheFlush {
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return &cacheFlush{
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func (c *CacheClient) Flush() *CacheFlushOp {
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return &CacheFlushOp{
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client: c,
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}
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}
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@ -117,111 +121,231 @@ func (c *CacheClient) cacheKey(group, key string) string {
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}
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// Key sets the cache key
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func (c *cacheSet) Key(key string) *cacheSet {
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func (c *CacheSetOp) Key(key string) *CacheSetOp {
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c.key = key
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return c
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}
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// Group sets the cache group
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func (c *cacheSet) Group(group string) *cacheSet {
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func (c *CacheSetOp) Group(group string) *CacheSetOp {
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c.group = group
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return c
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}
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// Data sets the data to cache
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func (c *cacheSet) Data(data any) *cacheSet {
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func (c *CacheSetOp) Data(data any) *CacheSetOp {
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c.data = data
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return c
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}
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// Expiration sets the expiration duration of the cached data
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func (c *cacheSet) Expiration(expiration time.Duration) *cacheSet {
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func (c *CacheSetOp) Expiration(expiration time.Duration) *CacheSetOp {
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c.expiration = expiration
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return c
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}
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// Tags sets the cache tags
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func (c *cacheSet) Tags(tags ...string) *cacheSet {
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func (c *CacheSetOp) Tags(tags ...string) *CacheSetOp {
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c.tags = tags
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return c
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}
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|
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// Save saves the data in the cache
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func (c *cacheSet) Save(ctx context.Context) error {
|
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if c.key == "" {
|
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func (c *CacheSetOp) Save(ctx context.Context) error {
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switch {
|
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case c.key == "":
|
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return errors.New("no cache key specified")
|
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case c.data == nil:
|
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return errors.New("no cache data specified")
|
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case c.expiration == 0:
|
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return errors.New("no cache expiration specified")
|
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}
|
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|
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opts := []libstore.Option{
|
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libstore.WithExpiration(c.expiration),
|
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libstore.WithTags(c.tags),
|
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}
|
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|
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return marshaler.
|
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New(c.client.cache).
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Set(ctx, c.client.cacheKey(c.group, c.key), c.data, opts...)
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return c.client.store.set(ctx, c)
|
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}
|
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|
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// Key sets the cache key
|
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func (c *cacheGet) Key(key string) *cacheGet {
|
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func (c *CacheGetOp) Key(key string) *CacheGetOp {
|
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c.key = key
|
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return c
|
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}
|
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|
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// Group sets the cache group
|
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func (c *cacheGet) Group(group string) *cacheGet {
|
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func (c *CacheGetOp) Group(group string) *CacheGetOp {
|
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c.group = group
|
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return c
|
||||
}
|
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|
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// Type sets the expected Go type of the data being retrieved from the cache
|
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func (c *cacheGet) Type(expectedType any) *cacheGet {
|
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c.dataType = expectedType
|
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return c
|
||||
}
|
||||
|
||||
// Fetch fetches the data from the cache
|
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func (c *cacheGet) Fetch(ctx context.Context) (any, error) {
|
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func (c *CacheGetOp) Fetch(ctx context.Context) (any, error) {
|
||||
if c.key == "" {
|
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return nil, errors.New("no cache key specified")
|
||||
}
|
||||
|
||||
return marshaler.New(c.client.cache).Get(
|
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ctx,
|
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c.client.cacheKey(c.group, c.key),
|
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c.dataType,
|
||||
)
|
||||
return c.client.store.get(ctx, c)
|
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}
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||||
|
||||
// Key sets the cache key
|
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func (c *cacheFlush) Key(key string) *cacheFlush {
|
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func (c *CacheFlushOp) Key(key string) *CacheFlushOp {
|
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c.key = key
|
||||
return c
|
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}
|
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|
||||
// Group sets the cache group
|
||||
func (c *cacheFlush) Group(group string) *cacheFlush {
|
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func (c *CacheFlushOp) Group(group string) *CacheFlushOp {
|
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c.group = group
|
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return c
|
||||
}
|
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|
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// Tags sets the cache tags
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func (c *cacheFlush) Tags(tags ...string) *cacheFlush {
|
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func (c *CacheFlushOp) Tags(tags ...string) *CacheFlushOp {
|
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c.tags = tags
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return c
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}
|
||||
|
||||
// Execute flushes the data from the cache
|
||||
func (c *cacheFlush) Execute(ctx context.Context) error {
|
||||
if len(c.tags) > 0 {
|
||||
if err := c.client.cache.Invalidate(ctx, libstore.WithInvalidateTags(c.tags)); err != nil {
|
||||
return err
|
||||
}
|
||||
func (c *CacheFlushOp) Execute(ctx context.Context) error {
|
||||
return c.client.store.flush(ctx, c)
|
||||
}
|
||||
|
||||
// newInMemoryCache creates a new in-memory CacheStore
|
||||
func newInMemoryCache(capacity int) (CacheStore, error) {
|
||||
s := &inMemoryCacheStore{
|
||||
tagIndex: newTagIndex(),
|
||||
}
|
||||
|
||||
if c.key != "" {
|
||||
return c.client.cache.Delete(ctx, c.client.cacheKey(c.group, c.key))
|
||||
store, err := otter.MustBuilder[string, any](capacity).
|
||||
WithVariableTTL().
|
||||
DeletionListener(func(key string, value any, cause otter.DeletionCause) {
|
||||
s.tagIndex.purgeKeys(key)
|
||||
}).
|
||||
Build()
|
||||
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
s.store = &store
|
||||
|
||||
return s, nil
|
||||
}
|
||||
|
||||
func (s *inMemoryCacheStore) get(_ context.Context, op *CacheGetOp) (any, error) {
|
||||
v, exists := s.store.Get(op.client.cacheKey(op.group, op.key))
|
||||
|
||||
if !exists {
|
||||
return nil, ErrCacheMiss
|
||||
}
|
||||
|
||||
return v, nil
|
||||
}
|
||||
|
||||
func (s *inMemoryCacheStore) set(_ context.Context, op *CacheSetOp) error {
|
||||
key := op.client.cacheKey(op.group, op.key)
|
||||
|
||||
added := s.store.Set(
|
||||
key,
|
||||
op.data,
|
||||
op.expiration,
|
||||
)
|
||||
|
||||
if len(op.tags) > 0 {
|
||||
s.tagIndex.setTags(key, op.tags...)
|
||||
}
|
||||
|
||||
if !added {
|
||||
return errors.New("cache set failed")
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func (s *inMemoryCacheStore) flush(_ context.Context, op *CacheFlushOp) error {
|
||||
keys := make([]string, 0)
|
||||
|
||||
if key := op.client.cacheKey(op.group, op.key); key != "" {
|
||||
keys = append(keys, key)
|
||||
}
|
||||
|
||||
if len(op.tags) > 0 {
|
||||
keys = append(keys, s.tagIndex.purgeTags(op.tags...)...)
|
||||
}
|
||||
|
||||
for _, key := range keys {
|
||||
s.store.Delete(key)
|
||||
}
|
||||
|
||||
s.tagIndex.purgeKeys(keys...)
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func (s *inMemoryCacheStore) close() {
|
||||
s.store.Close()
|
||||
}
|
||||
|
||||
func newTagIndex() *tagIndex {
|
||||
return &tagIndex{
|
||||
tags: make(map[string]map[string]struct{}),
|
||||
keys: make(map[string]map[string]struct{}),
|
||||
}
|
||||
}
|
||||
|
||||
func (i *tagIndex) setTags(key string, tags ...string) {
|
||||
i.Lock()
|
||||
defer i.Unlock()
|
||||
|
||||
if _, exists := i.keys[key]; !exists {
|
||||
i.keys[key] = make(map[string]struct{})
|
||||
}
|
||||
|
||||
for _, tag := range tags {
|
||||
if _, exists := i.tags[tag]; !exists {
|
||||
i.tags[tag] = make(map[string]struct{})
|
||||
}
|
||||
i.tags[tag][key] = struct{}{}
|
||||
i.keys[key][tag] = struct{}{}
|
||||
}
|
||||
}
|
||||
|
||||
func (i *tagIndex) purgeTags(tags ...string) []string {
|
||||
i.Lock()
|
||||
defer i.Unlock()
|
||||
|
||||
keys := make([]string, 0)
|
||||
|
||||
for _, tag := range tags {
|
||||
if tagKeys, exists := i.tags[tag]; exists {
|
||||
delete(i.tags, tag)
|
||||
|
||||
for key := range tagKeys {
|
||||
delete(i.keys[key], tag)
|
||||
if len(i.keys[key]) == 0 {
|
||||
delete(i.keys, key)
|
||||
}
|
||||
|
||||
keys = append(keys, key)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return keys
|
||||
}
|
||||
|
||||
func (i *tagIndex) purgeKeys(keys ...string) {
|
||||
i.Lock()
|
||||
defer i.Unlock()
|
||||
|
||||
for _, key := range keys {
|
||||
if keyTags, exists := i.keys[key]; exists {
|
||||
delete(i.keys, key)
|
||||
|
||||
for tag := range keyTags {
|
||||
delete(i.tags[tag], key)
|
||||
if len(i.tags[tag]) == 0 {
|
||||
delete(i.tags, tag)
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
|
|||
|
|
@ -2,11 +2,9 @@ package services
|
|||
|
||||
import (
|
||||
"context"
|
||||
"errors"
|
||||
"testing"
|
||||
"time"
|
||||
|
||||
libstore "github.com/eko/gocache/lib/v4/store"
|
||||
"github.com/stretchr/testify/assert"
|
||||
"github.com/stretchr/testify/require"
|
||||
)
|
||||
|
|
@ -15,6 +13,7 @@ func TestCacheClient(t *testing.T) {
|
|||
type cacheTest struct {
|
||||
Value string
|
||||
}
|
||||
|
||||
// Cache some data
|
||||
data := cacheTest{Value: "abcdef"}
|
||||
group := "testgroup"
|
||||
|
|
@ -24,6 +23,7 @@ func TestCacheClient(t *testing.T) {
|
|||
Group(group).
|
||||
Key(key).
|
||||
Data(data).
|
||||
Expiration(500 * time.Millisecond).
|
||||
Save(context.Background())
|
||||
require.NoError(t, err)
|
||||
|
||||
|
|
@ -32,20 +32,18 @@ func TestCacheClient(t *testing.T) {
|
|||
Get().
|
||||
Group(group).
|
||||
Key(key).
|
||||
Type(new(cacheTest)).
|
||||
Fetch(context.Background())
|
||||
require.NoError(t, err)
|
||||
cast, ok := fromCache.(*cacheTest)
|
||||
cast, ok := fromCache.(cacheTest)
|
||||
require.True(t, ok)
|
||||
assert.Equal(t, data, *cast)
|
||||
assert.Equal(t, data, cast)
|
||||
|
||||
// The same key with the wrong group should fail
|
||||
_, err = c.Cache.
|
||||
Get().
|
||||
Key(key).
|
||||
Type(new(cacheTest)).
|
||||
Fetch(context.Background())
|
||||
assert.Error(t, err)
|
||||
assert.Equal(t, ErrCacheMiss, err)
|
||||
|
||||
// Flush the data
|
||||
err = c.Cache.
|
||||
|
|
@ -56,29 +54,42 @@ func TestCacheClient(t *testing.T) {
|
|||
require.NoError(t, err)
|
||||
|
||||
// The data should be gone
|
||||
assertFlushed := func() {
|
||||
assertFlushed := func(key string) {
|
||||
// The data should be gone
|
||||
_, err = c.Cache.
|
||||
Get().
|
||||
Group(group).
|
||||
Key(key).
|
||||
Type(new(cacheTest)).
|
||||
Fetch(context.Background())
|
||||
assert.True(t, errors.Is(err, &libstore.NotFound{}))
|
||||
assert.Equal(t, ErrCacheMiss, err)
|
||||
}
|
||||
assertFlushed()
|
||||
assertFlushed(key)
|
||||
|
||||
// Set with tags
|
||||
key = "testkey2"
|
||||
err = c.Cache.
|
||||
Set().
|
||||
Group(group).
|
||||
Key(key).
|
||||
Data(data).
|
||||
Tags("tag1").
|
||||
Tags("tag1", "tag2").
|
||||
Expiration(time.Hour).
|
||||
Save(context.Background())
|
||||
require.NoError(t, err)
|
||||
|
||||
// Flush the tag
|
||||
// Check the tag index
|
||||
index := c.Cache.store.(*inMemoryCacheStore).tagIndex
|
||||
gk := c.Cache.cacheKey(group, key)
|
||||
_, exists := index.tags["tag1"][gk]
|
||||
assert.True(t, exists)
|
||||
_, exists = index.tags["tag2"][gk]
|
||||
assert.True(t, exists)
|
||||
_, exists = index.keys[gk]["tag1"]
|
||||
assert.True(t, exists)
|
||||
_, exists = index.keys[gk]["tag2"]
|
||||
assert.True(t, exists)
|
||||
|
||||
// Flush one of tags
|
||||
err = c.Cache.
|
||||
Flush().
|
||||
Tags("tag1").
|
||||
|
|
@ -86,21 +97,9 @@ func TestCacheClient(t *testing.T) {
|
|||
require.NoError(t, err)
|
||||
|
||||
// The data should be gone
|
||||
assertFlushed()
|
||||
assertFlushed(key)
|
||||
|
||||
// Set with expiration
|
||||
err = c.Cache.
|
||||
Set().
|
||||
Group(group).
|
||||
Key(key).
|
||||
Data(data).
|
||||
Expiration(time.Millisecond).
|
||||
Save(context.Background())
|
||||
require.NoError(t, err)
|
||||
|
||||
// Wait for expiration
|
||||
time.Sleep(time.Millisecond * 2)
|
||||
|
||||
// The data should be gone
|
||||
assertFlushed()
|
||||
// The index should be empty
|
||||
assert.Empty(t, index.tags)
|
||||
assert.Empty(t, index.keys)
|
||||
}
|
||||
|
|
|
|||
|
|
@ -5,14 +5,13 @@ import (
|
|||
"database/sql"
|
||||
"fmt"
|
||||
"log/slog"
|
||||
"os"
|
||||
"strings"
|
||||
|
||||
"entgo.io/ent/dialect"
|
||||
entsql "entgo.io/ent/dialect/sql"
|
||||
"entgo.io/ent/dialect/sql/schema"
|
||||
_ "github.com/mattn/go-sqlite3"
|
||||
"github.com/mikestefanello/pagoda/pkg/funcmap"
|
||||
|
||||
// Required by ent
|
||||
_ "github.com/jackc/pgx/v4/stdlib"
|
||||
"github.com/labstack/echo/v4"
|
||||
"github.com/mikestefanello/pagoda/config"
|
||||
"github.com/mikestefanello/pagoda/ent"
|
||||
|
|
@ -71,20 +70,16 @@ func NewContainer() *Container {
|
|||
return c
|
||||
}
|
||||
|
||||
// Shutdown shuts the Container down and disconnects all connections
|
||||
// Shutdown shuts the Container down and disconnects all connections.
|
||||
// If the task runner was started, cancel the context to shut it down prior to calling this.
|
||||
func (c *Container) Shutdown() error {
|
||||
if err := c.Tasks.Close(); err != nil {
|
||||
return err
|
||||
}
|
||||
if err := c.Cache.Close(); err != nil {
|
||||
return err
|
||||
}
|
||||
if err := c.ORM.Close(); err != nil {
|
||||
return err
|
||||
}
|
||||
if err := c.Database.Close(); err != nil {
|
||||
return err
|
||||
}
|
||||
c.Cache.Close()
|
||||
|
||||
return nil
|
||||
}
|
||||
|
|
@ -120,59 +115,41 @@ func (c *Container) initWeb() {
|
|||
|
||||
// initCache initializes the cache
|
||||
func (c *Container) initCache() {
|
||||
var err error
|
||||
if c.Cache, err = NewCacheClient(c.Config); err != nil {
|
||||
store, err := newInMemoryCache(c.Config.Cache.Capacity)
|
||||
if err != nil {
|
||||
panic(err)
|
||||
}
|
||||
|
||||
c.Cache = NewCacheClient(store)
|
||||
}
|
||||
|
||||
// initDatabase initializes the database
|
||||
// If the environment is set to test, the test database will be used and will be dropped, recreated and migrated
|
||||
func (c *Container) initDatabase() {
|
||||
var err error
|
||||
var connection string
|
||||
|
||||
getAddr := func(dbName string) string {
|
||||
return fmt.Sprintf("postgresql://%s:%s@%s:%d/%s",
|
||||
c.Config.Database.User,
|
||||
c.Config.Database.Password,
|
||||
c.Config.Database.Hostname,
|
||||
c.Config.Database.Port,
|
||||
dbName,
|
||||
)
|
||||
switch c.Config.App.Environment {
|
||||
case config.EnvTest:
|
||||
// TODO: Drop/recreate the DB, if this isn't in memory?
|
||||
connection = c.Config.Database.TestConnection
|
||||
default:
|
||||
connection = c.Config.Database.Connection
|
||||
}
|
||||
|
||||
c.Database, err = sql.Open("pgx", getAddr(c.Config.Database.Database))
|
||||
c.Database, err = openDB(c.Config.Database.Driver, connection)
|
||||
if err != nil {
|
||||
panic(fmt.Sprintf("failed to connect to database: %v", err))
|
||||
}
|
||||
|
||||
// Check if this is a test environment
|
||||
if c.Config.App.Environment == config.EnvTest {
|
||||
// Drop the test database, ignoring errors in case it doesn't yet exist
|
||||
_, _ = c.Database.Exec("DROP DATABASE " + c.Config.Database.TestDatabase)
|
||||
|
||||
// Create the test database
|
||||
if _, err = c.Database.Exec("CREATE DATABASE " + c.Config.Database.TestDatabase); err != nil {
|
||||
panic(fmt.Sprintf("failed to create test database: %v", err))
|
||||
}
|
||||
|
||||
// Connect to the test database
|
||||
if err = c.Database.Close(); err != nil {
|
||||
panic(fmt.Sprintf("failed to close database connection: %v", err))
|
||||
}
|
||||
c.Database, err = sql.Open("pgx", getAddr(c.Config.Database.TestDatabase))
|
||||
if err != nil {
|
||||
panic(fmt.Sprintf("failed to connect to database: %v", err))
|
||||
}
|
||||
panic(err)
|
||||
}
|
||||
}
|
||||
|
||||
// initORM initializes the ORM
|
||||
func (c *Container) initORM() {
|
||||
drv := entsql.OpenDB(dialect.Postgres, c.Database)
|
||||
drv := entsql.OpenDB(c.Config.Database.Driver, c.Database)
|
||||
c.ORM = ent.NewClient(ent.Driver(drv))
|
||||
if err := c.ORM.Schema.Create(context.Background(), schema.WithAtlas(true)); err != nil {
|
||||
panic(fmt.Sprintf("failed to create database schema: %v", err))
|
||||
|
||||
// Run the auto migration tool.
|
||||
if err := c.ORM.Schema.Create(context.Background()); err != nil {
|
||||
panic(err)
|
||||
}
|
||||
}
|
||||
|
||||
|
|
@ -197,5 +174,30 @@ func (c *Container) initMail() {
|
|||
|
||||
// initTasks initializes the task client
|
||||
func (c *Container) initTasks() {
|
||||
c.Tasks = NewTaskClient(c.Config)
|
||||
var err error
|
||||
// You could use a separate database for tasks, if you'd like. but using one
|
||||
// makes transaction support easier
|
||||
c.Tasks, err = NewTaskClient(c.Config.Tasks, c.Database)
|
||||
if err != nil {
|
||||
panic(fmt.Sprintf("failed to create task client: %v", err))
|
||||
}
|
||||
}
|
||||
|
||||
// openDB opens a database connection
|
||||
func openDB(driver, connection string) (*sql.DB, error) {
|
||||
// Helper to automatically create the directories that the specified sqlite file
|
||||
// should reside in, if one
|
||||
if driver == "sqlite3" {
|
||||
d := strings.Split(connection, "/")
|
||||
|
||||
if len(d) > 1 {
|
||||
path := strings.Join(d[:len(d)-1], "/")
|
||||
|
||||
if err := os.MkdirAll(path, 0755); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return sql.Open(driver, connection)
|
||||
}
|
||||
|
|
|
|||
|
|
@ -1,179 +1,204 @@
|
|||
package services
|
||||
|
||||
import (
|
||||
"encoding/json"
|
||||
"fmt"
|
||||
"bytes"
|
||||
"context"
|
||||
"database/sql"
|
||||
"encoding/gob"
|
||||
"strings"
|
||||
"sync"
|
||||
"time"
|
||||
|
||||
"github.com/hibiken/asynq"
|
||||
"github.com/maragudk/goqite"
|
||||
"github.com/maragudk/goqite/jobs"
|
||||
"github.com/mikestefanello/pagoda/config"
|
||||
"github.com/mikestefanello/pagoda/pkg/log"
|
||||
)
|
||||
|
||||
type (
|
||||
// TaskClient is that client that allows you to queue or schedule task execution
|
||||
// TaskClient is that client that allows you to queue or schedule task execution.
|
||||
// Under the hood we create only a single queue using goqite for all tasks because we do not want more than one
|
||||
// runner to process the tasks. The TaskClient wrapper provides abstractions for separate, type-safe queues.
|
||||
TaskClient struct {
|
||||
// client stores the asynq client
|
||||
client *asynq.Client
|
||||
|
||||
// scheduler stores the asynq scheduler
|
||||
scheduler *asynq.Scheduler
|
||||
queue *goqite.Queue
|
||||
runner *jobs.Runner
|
||||
buffers sync.Pool
|
||||
}
|
||||
|
||||
// task handles task creation operations
|
||||
task struct {
|
||||
client *TaskClient
|
||||
typ string
|
||||
payload any
|
||||
periodic *string
|
||||
queue *string
|
||||
maxRetries *int
|
||||
timeout *time.Duration
|
||||
deadline *time.Time
|
||||
at *time.Time
|
||||
wait *time.Duration
|
||||
retain *time.Duration
|
||||
// Task is a job that can be added to a queue and later passed to and executed by a QueueSubscriber.
|
||||
// See pkg/tasks for an example of how this can be used with a queue.
|
||||
Task interface {
|
||||
Name() string
|
||||
}
|
||||
|
||||
// TaskSaveOp handles task save operations
|
||||
TaskSaveOp struct {
|
||||
client *TaskClient
|
||||
task Task
|
||||
tx *sql.Tx
|
||||
at *time.Time
|
||||
wait *time.Duration
|
||||
}
|
||||
|
||||
// Queue is a queue that a Task can be pushed to for execution.
|
||||
// While this can be implemented directly, it's recommended to use NewQueue() which uses generics in
|
||||
// order to provide type-safe queues and queue subscriber callbacks for task execution.
|
||||
Queue interface {
|
||||
// Name returns the name of the task this queue processes
|
||||
Name() string
|
||||
|
||||
// Receive receives the Task payload to be processed
|
||||
Receive(ctx context.Context, payload []byte) error
|
||||
}
|
||||
|
||||
// queue provides a type-safe implementation of Queue
|
||||
queue[T Task] struct {
|
||||
name string
|
||||
subscriber QueueSubscriber[T]
|
||||
}
|
||||
|
||||
// QueueSubscriber is a generic subscriber callback for a given queue to process Tasks
|
||||
QueueSubscriber[T Task] func(context.Context, T) error
|
||||
)
|
||||
|
||||
// NewTaskClient creates a new task client
|
||||
func NewTaskClient(cfg *config.Config) *TaskClient {
|
||||
// Determine the database based on the environment
|
||||
db := cfg.Cache.Database
|
||||
if cfg.App.Environment == config.EnvTest {
|
||||
db = cfg.Cache.TestDatabase
|
||||
func NewTaskClient(cfg config.TasksConfig, db *sql.DB) (*TaskClient, error) {
|
||||
// Install the schema
|
||||
if err := goqite.Setup(context.Background(), db); err != nil {
|
||||
// An error is returned if we already ran this and there's no better way to check.
|
||||
// You can and probably should handle this via migrations
|
||||
if !strings.Contains(err.Error(), "already exists") {
|
||||
return nil, err
|
||||
}
|
||||
}
|
||||
|
||||
conn := asynq.RedisClientOpt{
|
||||
Addr: fmt.Sprintf("%s:%d", cfg.Cache.Hostname, cfg.Cache.Port),
|
||||
Password: cfg.Cache.Password,
|
||||
DB: db,
|
||||
t := &TaskClient{
|
||||
queue: goqite.New(goqite.NewOpts{
|
||||
DB: db,
|
||||
Name: "tasks",
|
||||
MaxReceive: cfg.MaxRetries,
|
||||
}),
|
||||
buffers: sync.Pool{
|
||||
New: func() interface{} {
|
||||
return bytes.NewBuffer(nil)
|
||||
},
|
||||
},
|
||||
}
|
||||
|
||||
return &TaskClient{
|
||||
client: asynq.NewClient(conn),
|
||||
scheduler: asynq.NewScheduler(conn, nil),
|
||||
}
|
||||
t.runner = jobs.NewRunner(jobs.NewRunnerOpts{
|
||||
Limit: cfg.Goroutines,
|
||||
Log: log.Default(),
|
||||
PollInterval: cfg.PollInterval,
|
||||
Queue: t.queue,
|
||||
})
|
||||
|
||||
return t, nil
|
||||
}
|
||||
|
||||
// Close closes the connection to the task service
|
||||
func (t *TaskClient) Close() error {
|
||||
return t.client.Close()
|
||||
// StartRunner starts the scheduler service which adds scheduled tasks to the queue.
|
||||
// This must be running in order to execute queued tasked.
|
||||
// To stop the runner, cancel the context.
|
||||
// This is a blocking call.
|
||||
func (t *TaskClient) StartRunner(ctx context.Context) {
|
||||
t.runner.Start(ctx)
|
||||
}
|
||||
|
||||
// StartScheduler starts the scheduler service which adds scheduled tasks to the queue
|
||||
// This must be running in order to queue tasks set for periodic execution
|
||||
func (t *TaskClient) StartScheduler() error {
|
||||
return t.scheduler.Run()
|
||||
// Register registers a queue so tasks can be added to it and processed
|
||||
func (t *TaskClient) Register(queue Queue) {
|
||||
t.runner.Register(queue.Name(), queue.Receive)
|
||||
}
|
||||
|
||||
// New starts a task creation operation
|
||||
func (t *TaskClient) New(typ string) *task {
|
||||
return &task{
|
||||
// New starts a task save operation
|
||||
func (t *TaskClient) New(task Task) *TaskSaveOp {
|
||||
return &TaskSaveOp{
|
||||
client: t,
|
||||
typ: typ,
|
||||
task: task,
|
||||
}
|
||||
}
|
||||
|
||||
// Payload sets the task payload data which will be sent to the task handler
|
||||
func (t *task) Payload(payload any) *task {
|
||||
t.payload = payload
|
||||
return t
|
||||
}
|
||||
|
||||
// Periodic sets the task to execute periodically according to a given interval
|
||||
// The interval can be either in cron form ("*/5 * * * *") or "@every 30s"
|
||||
func (t *task) Periodic(interval string) *task {
|
||||
t.periodic = &interval
|
||||
return t
|
||||
}
|
||||
|
||||
// Queue specifies the name of the queue to add the task to
|
||||
// The default queue will be used if this is not set
|
||||
func (t *task) Queue(queue string) *task {
|
||||
t.queue = &queue
|
||||
return t
|
||||
}
|
||||
|
||||
// Timeout sets the task timeout, meaning the task must execute within a given duration
|
||||
func (t *task) Timeout(timeout time.Duration) *task {
|
||||
t.timeout = &timeout
|
||||
return t
|
||||
}
|
||||
|
||||
// Deadline sets the task execution deadline to a specific date and time
|
||||
func (t *task) Deadline(deadline time.Time) *task {
|
||||
t.deadline = &deadline
|
||||
return t
|
||||
}
|
||||
|
||||
// At sets the exact date and time the task should be executed
|
||||
func (t *task) At(processAt time.Time) *task {
|
||||
t.at = &processAt
|
||||
func (t *TaskSaveOp) At(processAt time.Time) *TaskSaveOp {
|
||||
t.Wait(time.Until(processAt))
|
||||
return t
|
||||
}
|
||||
|
||||
// Wait instructs the task to wait a given duration before it is executed
|
||||
func (t *task) Wait(duration time.Duration) *task {
|
||||
func (t *TaskSaveOp) Wait(duration time.Duration) *TaskSaveOp {
|
||||
t.wait = &duration
|
||||
return t
|
||||
}
|
||||
|
||||
// Retain instructs the task service to retain the task data for a given duration after execution is complete
|
||||
func (t *task) Retain(duration time.Duration) *task {
|
||||
t.retain = &duration
|
||||
// Tx will include the task as part of a given database transaction
|
||||
func (t *TaskSaveOp) Tx(tx *sql.Tx) *TaskSaveOp {
|
||||
t.tx = tx
|
||||
return t
|
||||
}
|
||||
|
||||
// MaxRetries sets the maximum amount of times to retry executing the task in the event of a failure
|
||||
func (t *task) MaxRetries(retries int) *task {
|
||||
t.maxRetries = &retries
|
||||
return t
|
||||
}
|
||||
|
||||
// Save saves the task so it can be executed
|
||||
func (t *task) Save() error {
|
||||
var err error
|
||||
|
||||
// Build the payload
|
||||
var payload []byte
|
||||
if t.payload != nil {
|
||||
if payload, err = json.Marshal(t.payload); err != nil {
|
||||
return err
|
||||
}
|
||||
// Save saves the task, so it can be queued for execution
|
||||
func (t *TaskSaveOp) Save() error {
|
||||
type message struct {
|
||||
Name string
|
||||
Message []byte
|
||||
}
|
||||
|
||||
// Build the task options
|
||||
opts := make([]asynq.Option, 0)
|
||||
if t.queue != nil {
|
||||
opts = append(opts, asynq.Queue(*t.queue))
|
||||
// Encode the task
|
||||
taskBuf := t.client.buffers.Get().(*bytes.Buffer)
|
||||
if err := gob.NewEncoder(taskBuf).Encode(t.task); err != nil {
|
||||
return err
|
||||
}
|
||||
if t.maxRetries != nil {
|
||||
opts = append(opts, asynq.MaxRetry(*t.maxRetries))
|
||||
|
||||
// Wrap and encode the message
|
||||
// This is needed as a workaround because goqite doesn't support delays using the jobs package,
|
||||
// so we format the message the way it expects but use the queue to supply the delay
|
||||
msgBuf := t.client.buffers.Get().(*bytes.Buffer)
|
||||
wrapper := message{Name: t.task.Name(), Message: taskBuf.Bytes()}
|
||||
if err := gob.NewEncoder(msgBuf).Encode(wrapper); err != nil {
|
||||
return err
|
||||
}
|
||||
if t.timeout != nil {
|
||||
opts = append(opts, asynq.Timeout(*t.timeout))
|
||||
}
|
||||
if t.deadline != nil {
|
||||
opts = append(opts, asynq.Deadline(*t.deadline))
|
||||
|
||||
msg := goqite.Message{
|
||||
Body: msgBuf.Bytes(),
|
||||
}
|
||||
|
||||
if t.wait != nil {
|
||||
opts = append(opts, asynq.ProcessIn(*t.wait))
|
||||
}
|
||||
if t.retain != nil {
|
||||
opts = append(opts, asynq.Retention(*t.retain))
|
||||
}
|
||||
if t.at != nil {
|
||||
opts = append(opts, asynq.ProcessAt(*t.at))
|
||||
msg.Delay = *t.wait
|
||||
}
|
||||
|
||||
// Build the task
|
||||
task := asynq.NewTask(t.typ, payload, opts...)
|
||||
// Put the buffers back in the pool for re-use
|
||||
taskBuf.Reset()
|
||||
msgBuf.Reset()
|
||||
t.client.buffers.Put(taskBuf)
|
||||
t.client.buffers.Put(msgBuf)
|
||||
|
||||
// Schedule, if needed
|
||||
if t.periodic != nil {
|
||||
_, err = t.client.scheduler.Register(*t.periodic, task)
|
||||
if t.tx == nil {
|
||||
return t.client.queue.Send(context.Background(), msg)
|
||||
} else {
|
||||
_, err = t.client.client.Enqueue(task)
|
||||
return t.client.queue.SendTx(context.Background(), t.tx, msg)
|
||||
}
|
||||
return err
|
||||
}
|
||||
|
||||
// NewQueue queues a new type-safe Queue of a given Task type
|
||||
func NewQueue[T Task](subscriber QueueSubscriber[T]) Queue {
|
||||
var task T
|
||||
|
||||
q := &queue[T]{
|
||||
name: task.Name(),
|
||||
subscriber: subscriber,
|
||||
}
|
||||
|
||||
return q
|
||||
}
|
||||
|
||||
func (q *queue[T]) Name() string {
|
||||
return q.name
|
||||
}
|
||||
|
||||
func (q *queue[T]) Receive(ctx context.Context, payload []byte) error {
|
||||
var obj T
|
||||
err := gob.NewDecoder(bytes.NewReader(payload)).Decode(&obj)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
return q.subscriber(ctx, obj)
|
||||
}
|
||||
|
|
|
|||
|
|
@ -1,35 +1,69 @@
|
|||
package services
|
||||
|
||||
import (
|
||||
"context"
|
||||
"database/sql"
|
||||
"github.com/stretchr/testify/assert"
|
||||
"github.com/stretchr/testify/require"
|
||||
"testing"
|
||||
"time"
|
||||
|
||||
"github.com/stretchr/testify/assert"
|
||||
)
|
||||
|
||||
func TestTaskClient_New(t *testing.T) {
|
||||
now := time.Now()
|
||||
tk := c.Tasks.
|
||||
New("task1").
|
||||
Payload("payload").
|
||||
Queue("queue").
|
||||
Periodic("@every 5s").
|
||||
MaxRetries(5).
|
||||
Timeout(5 * time.Second).
|
||||
Deadline(now).
|
||||
At(now).
|
||||
Wait(6 * time.Second).
|
||||
Retain(7 * time.Second)
|
||||
|
||||
assert.Equal(t, "task1", tk.typ)
|
||||
assert.Equal(t, "payload", tk.payload.(string))
|
||||
assert.Equal(t, "queue", *tk.queue)
|
||||
assert.Equal(t, "@every 5s", *tk.periodic)
|
||||
assert.Equal(t, 5, *tk.maxRetries)
|
||||
assert.Equal(t, 5*time.Second, *tk.timeout)
|
||||
assert.Equal(t, now, *tk.deadline)
|
||||
assert.Equal(t, now, *tk.at)
|
||||
assert.Equal(t, 6*time.Second, *tk.wait)
|
||||
assert.Equal(t, 7*time.Second, *tk.retain)
|
||||
assert.NoError(t, tk.Save())
|
||||
type testTask struct {
|
||||
Val int
|
||||
}
|
||||
|
||||
func (t testTask) Name() string {
|
||||
return "test_task"
|
||||
}
|
||||
|
||||
func TestTaskClient_New(t *testing.T) {
|
||||
var subCalled bool
|
||||
|
||||
queue := NewQueue[testTask](func(ctx context.Context, task testTask) error {
|
||||
subCalled = true
|
||||
assert.Equal(t, 123, task.Val)
|
||||
return nil
|
||||
})
|
||||
c.Tasks.Register(queue)
|
||||
|
||||
task := testTask{Val: 123}
|
||||
|
||||
tx := &sql.Tx{}
|
||||
|
||||
op := c.Tasks.
|
||||
New(task).
|
||||
Wait(5 * time.Second).
|
||||
Tx(tx)
|
||||
|
||||
// Check that the task op was built correctly
|
||||
assert.Equal(t, task, op.task)
|
||||
assert.Equal(t, tx, op.tx)
|
||||
assert.Equal(t, 5*time.Second, *op.wait)
|
||||
|
||||
// Remove the transaction and delay so we can process the task immediately
|
||||
op.tx, op.wait = nil, nil
|
||||
err := op.Save()
|
||||
require.NoError(t, err)
|
||||
|
||||
// Start the runner
|
||||
ctx, cancel := context.WithCancel(context.Background())
|
||||
go c.Tasks.StartRunner(ctx)
|
||||
defer cancel()
|
||||
|
||||
// Check for up to 5 seconds if the task executed
|
||||
start := time.Now()
|
||||
waitLoop:
|
||||
for {
|
||||
switch {
|
||||
case subCalled:
|
||||
break waitLoop
|
||||
case time.Since(start) > (5 * time.Second):
|
||||
break waitLoop
|
||||
default:
|
||||
time.Sleep(10 * time.Millisecond)
|
||||
}
|
||||
}
|
||||
|
||||
assert.True(t, subCalled)
|
||||
}
|
||||
|
|
|
|||
|
|
@ -185,7 +185,7 @@ func (t *TemplateRenderer) cachePage(ctx echo.Context, page page.Page, html *byt
|
|||
// The request URL is used as the cache key so the middleware can serve the
|
||||
// cached page on matching requests
|
||||
key := ctx.Request().URL.String()
|
||||
cp := CachedPage{
|
||||
cp := &CachedPage{
|
||||
URL: key,
|
||||
HTML: html.Bytes(),
|
||||
Headers: headers,
|
||||
|
|
@ -217,7 +217,6 @@ func (t *TemplateRenderer) GetCachedPage(ctx echo.Context, url string) (*CachedP
|
|||
Get().
|
||||
Group(cachedPageGroup).
|
||||
Key(url).
|
||||
Type(new(CachedPage)).
|
||||
Fetch(ctx.Request().Context())
|
||||
|
||||
if err != nil {
|
||||
|
|
|
|||
|
|
@ -2,21 +2,35 @@ package tasks
|
|||
|
||||
import (
|
||||
"context"
|
||||
"log"
|
||||
|
||||
"github.com/hibiken/asynq"
|
||||
"github.com/mikestefanello/pagoda/pkg/log"
|
||||
"github.com/mikestefanello/pagoda/pkg/services"
|
||||
)
|
||||
|
||||
// TypeExample is the type for the example task.
|
||||
// This is what is passed in to TaskClient.New() when creating a new task
|
||||
const TypeExample = "example_task"
|
||||
|
||||
// ExampleProcessor processes example tasks
|
||||
type ExampleProcessor struct {
|
||||
// ExampleTask is an example implementation of services.Task
|
||||
// This represents the task that can be queued for execution via the task client and should contain everything
|
||||
// that your queue subscriber needs to process the task.
|
||||
type ExampleTask struct {
|
||||
Message string
|
||||
}
|
||||
|
||||
// ProcessTask handles the processing of the task
|
||||
func (p *ExampleProcessor) ProcessTask(ctx context.Context, t *asynq.Task) error {
|
||||
log.Printf("executing task: %s", t.Type())
|
||||
return nil
|
||||
// Name satisfies the services.Task interface by proviing a unique name for this Task type
|
||||
func (t ExampleTask) Name() string {
|
||||
return "example_task"
|
||||
}
|
||||
|
||||
// NewExampleTaskQueue provides a Queue that can process ExampleTask tasks
|
||||
// The service container is provided so the subscriber can have access to the app dependencies.
|
||||
// All queues must be registered in the Register() function.
|
||||
// Whenever an ExampleTask is added to the task client, it will be queued and eventually sent here for execution.
|
||||
func NewExampleTaskQueue(c *services.Container) services.Queue {
|
||||
return services.NewQueue[ExampleTask](func(ctx context.Context, task ExampleTask) error {
|
||||
log.Default().Info("Example task received",
|
||||
"message", task.Message,
|
||||
)
|
||||
log.Default().Info("This can access the container for dependencies",
|
||||
"echo", c.Web.Reverse("home"),
|
||||
)
|
||||
return nil
|
||||
})
|
||||
}
|
||||
|
|
|
|||
10
pkg/tasks/register.go
Normal file
10
pkg/tasks/register.go
Normal file
|
|
@ -0,0 +1,10 @@
|
|||
package tasks
|
||||
|
||||
import (
|
||||
"github.com/mikestefanello/pagoda/pkg/services"
|
||||
)
|
||||
|
||||
// Register registers all task queues with the task client
|
||||
func Register(c *services.Container) {
|
||||
c.Tasks.Register(NewExampleTaskQueue(c))
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue