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server.go
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server.go
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package main
import (
"context"
"fmt"
"log/slog"
"net/http"
"pkbldr/activities"
"pkbldr/auth"
"pkbldr/config"
"pkbldr/packages"
"pkbldr/starters"
"pkbldr/workflows"
"strconv"
"time"
"github.com/gofiber/fiber/v2"
"github.com/gofiber/fiber/v2/middleware/logger"
"github.com/gofiber/template/html/v2"
"go.temporal.io/sdk/client"
"go.temporal.io/sdk/worker"
gowebly "github.com/gowebly/helpers"
)
// runServer runs a new HTTP server with the loaded environment variables.
func runServer(ctx context.Context) error {
// Validate environment variables.
port, err := strconv.Atoi(gowebly.Getenv("BACKEND_PORT", "7555"))
if err != nil {
slog.Error(fmt.Sprintf("invalid backend port: %d %s", port, err.Error()))
return err
}
// Load configuration.
err = config.Init()
if err != nil {
slog.Error("unable to load configuration: " + err.Error())
return err
}
// Init session cache.
err = auth.Init()
if err != nil {
slog.Error("unable to init session cache: " + err.Error())
return err
}
err = packages.LoadFromDb()
if err != nil {
slog.Error("unable to load packages from db: " + err.Error())
return err
}
c, err := client.Dial(client.Options{
HostPort: config.Configs.TemporalUrl,
})
if err != nil {
fmt.Println("unable to create Temporal client: " + err.Error())
}
defer c.Close()
go startTemporalFetchWorker(c)
go startTemporalBuildWorker(c)
//go starters.FetchPackagesNow(c, ctx)
go starters.ScheduleFetchPackages(c, ctx)
//go starters.BuildPackagesNow(c, ctx)
go starters.ScheduleBuildPackages(c, ctx)
// Create a new server instance with options from environment variables.
// For more information, see https://blog.cloudflare.com/the-complete-guide-to-golang-net-http-timeouts/
config := fiber.Config{
Views: html.NewFileSystem(http.Dir("./templates"), ".html"),
ViewsLayout: "main",
ReadTimeout: 5 * time.Second,
WriteTimeout: 10 * time.Second,
}
// Create a new Fiber server.
server := fiber.New(config)
// Add Fiber middlewares.
server.Use(logger.New())
// Handle static files.
server.Static("/static", "./static")
// Handle index page view.
server.Get("/", indexViewHandler)
server.Get("/packages", packagesPageHandler)
return server.Listen(fmt.Sprintf(":%d", port))
}
func startTemporalFetchWorker(c client.Client) {
// This worker hosts both Workflow and Activity functions
w := worker.New(c, workflows.PACKAGE_FETCH_TASK_QUEUE, worker.Options{})
w.RegisterWorkflow(workflows.FetchPackages)
w.RegisterActivity(activities.FetchPackages)
// Start listening to the Task Queue
err := w.Run(worker.InterruptCh())
if err != nil {
slog.Error("unable to start temporal fetch Worker: " + err.Error())
}
}
func startTemporalBuildWorker(c client.Client) {
// This worker hosts both Workflow and Activity functions
w := worker.New(c, workflows.PACKAGE_BUILD_TASK_QUEUE, worker.Options{})
w.RegisterWorkflow(workflows.BuildPackages)
w.RegisterActivity(activities.StartBuildLoop)
w.RegisterActivity(activities.UpdateDockerContainer)
w.RegisterActivity(activities.FetchPackages)
// Start listening to the Task Queue
err := w.Run(worker.InterruptCh())
if err != nil {
slog.Error("unable to start temporal build Worker: " + err.Error())
}
}