s3browser-backend/internal/s3Broswer.go

package s3browser

import (
	"context"
	"fmt"

	"github.com/minio/minio-go/v7"
	"github.com/minio/minio-go/v7/pkg/credentials"
	log "github.com/sirupsen/logrus"

	gql "git.kapelle.org/niklas/s3browser/internal/gql"
	httpserver "git.kapelle.org/niklas/s3browser/internal/httpserver"
	types "git.kapelle.org/niklas/s3browser/internal/types"
)

var bucketName string

// setupS3Client connect the s3Client
func setupS3Client(config types.AppConfig) (*minio.Client, error) {
	minioClient, err := minio.New(config.S3Endoint, &minio.Options{
		Creds:  credentials.NewStaticV4(config.S3AccessKey, config.S3SecretKey, ""),
		Secure: config.S3SSL,
	})

	if err != nil {
		return nil, err
	}

	exists, err := minioClient.BucketExists(context.Background(), config.S3Bucket)

	if err != nil {
		return nil, err
	}

	if !exists {
		return nil, fmt.Errorf("Bucket '%s' does not exist", config.S3Bucket)
	}

	bucketName = config.S3Bucket

	return minioClient, nil
}

// Start starts the app
func Start(config types.AppConfig) {

	if config.LogDebug {
		log.SetLevel(log.DebugLevel)
	}

	log.Info("Starting")
	log.Debug("Setting up s3 client")
	s3Client, err := setupS3Client(config)

	if err != nil {
		log.Error("Failed to setup s3 client: ", err.Error())
		return
	}
	log.Info("s3 client connected")

	log.Debug("Creating dataloader")
	loaderMap := createDataloader(config)

	log.Debug("Generating graphq schema")
	gql.GraphqlTypes()
	schema, err := gql.GraphqlSchema()

	if err != nil {
		log.Error("Failed to generate graphq schemas: ", err.Error())
		return
	}

	resolveContext := context.WithValue(context.Background(), "s3Client", s3Client)
	resolveContext = context.WithValue(resolveContext, "loader", loaderMap)

	log.Debug("Starting HTTP server")
	err = httpserver.InitHttp(resolveContext, schema, config.Address)

	if err != nil {
		log.Error("Failed to start webserver: ", err.Error())
		return
	}
}