query-orchestration/internal/test/container.go

package test

import (
	"bufio"
	"context"
	"fmt"
	"log/slog"
	"queryorchestration/internal/serviceconfig"
	"strconv"
	"testing"

	"github.com/docker/go-connections/nat"
	"github.com/testcontainers/testcontainers-go"
	"github.com/testcontainers/testcontainers-go/wait"
)

type Container struct {
	Container testcontainers.Container
	URI       string
}

type containerConfig struct {
	Name         string
	Cfg          serviceconfig.ConfigProvider
	Network      *testcontainers.DockerNetwork
	Env          map[string]string
	WaitForMsg   string
	ExposedPorts []nat.Port
}

func createContainer(t testing.TB, ctx context.Context, cfg *containerConfig) (testcontainers.Container, func()) {
	env := map[string]string{
		"PGUSER":                cfg.Cfg.GetDBUser(),
		"PGPASSWORD":            cfg.Cfg.GetDBSecret(),
		"PGHOST":                cfg.Cfg.GetDBHost(),
		"PGDATABASE":            cfg.Cfg.GetDBName(),
		"PGPORT":                strconv.Itoa(cfg.Cfg.GetDBPort()),
		"DB_NOSSL":              strconv.FormatBool(cfg.Cfg.IsDBNoSSL()),
		"AWS_ACCESS_KEY_ID":     cfg.Cfg.GetAWSKeyID(),
		"AWS_SECRET_ACCESS_KEY": cfg.Cfg.GetAWSSecretKey(),
		"AWS_REGION":            cfg.Cfg.GetAWSRegion(),
		"AWS_DEFAULT_REGION":    cfg.Cfg.GetAWSRegion(),
		"AWS_ENDPOINT_URL":      cfg.Cfg.GetAWSEndpoint(),
		"AWS_ENDPOINT_URL_SQS":  cfg.Cfg.GetAWSEndpoint(),
		"AWS_ENDPOINT_URL_S3":   cfg.Cfg.GetAWSEndpoint(),
		"AWS_S3_USE_PATH_STYLE": strconv.FormatBool(true),
	}
	if cfg.Env != nil {
		for k, v := range cfg.Env {
			env[k] = v
		}
	}

	req := testcontainers.ContainerRequest{
		Image:      "queryorchestration:latest",
		Env:        env,
		Networks:   []string{cfg.Network.Name},
		WaitingFor: wait.ForLog(cfg.WaitForMsg),
		Entrypoint: []string{fmt.Sprintf("./%s", cfg.Name)},
	}

	if len(cfg.ExposedPorts) > 0 {
		ports := make([]string, len(cfg.ExposedPorts))
		for index, port := range cfg.ExposedPorts {
			ports[index] = port.Port()
		}
		req.ExposedPorts = ports
	}

	container, err := testcontainers.GenericContainer(ctx, testcontainers.GenericContainerRequest{
		ContainerRequest: req,
		Started:          true,
	})
	if err != nil {
		logs, _ := container.Logs(ctx)
		defer logs.Close()

		scanner := bufio.NewScanner(logs)
		for scanner.Scan() {
			line := scanner.Text()
			slog.Error(line)
		}

		t.Fatalf("Failed to start container: %v", err)
	}

	return container, func() {
		err := container.Terminate(ctx)
		if err != nil {
			t.Error(err)
		}
	}
}