/
resolver.go
45 lines (36 loc) · 985 Bytes
/
resolver.go
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package cron
import (
"context"
"errors"
"fmt"
"github.com/go-co-op/gocron/v2"
)
var _ Resolver = (*TaskResolver)(nil)
var ErrTaskNotFound = errors.New("task not found")
type Resolver interface {
Resolve(ctx context.Context, job Job) (Task, error)
}
type (
Task = gocron.Task
TaskFunc func(ctx context.Context, job Job) error
MiddlewareFunc func(next TaskFunc) TaskFunc
)
type TaskResolver struct {
tasks map[JobType]TaskFunc
}
func NewTaskResolver(tasks map[JobType]TaskFunc, middleware ...MiddlewareFunc) *TaskResolver {
r := &TaskResolver{tasks: map[JobType]TaskFunc{}}
for jt, task := range tasks {
for i := len(middleware) - 1; i >= 0; i-- {
task = middleware[i](task)
}
r.tasks[jt] = task
}
return r
}
func (r *TaskResolver) Resolve(ctx context.Context, job Job) (Task, error) {
if task, ok := r.tasks[job.Type]; ok {
return gocron.NewTask(task, ctx, job), nil
}
return nil, fmt.Errorf("%w: `%s`", ErrTaskNotFound, job.Type)
}