werf/werf

package container_backend

import (
    "context"
    "fmt"
    "os"
    "strings"

    "github.com/docker/docker/pkg/stringid"

    "github.com/werf/logboek"
)

var (
    logImageInfoLeftPartWidth = 9
    logImageInfoFormat        = fmt.Sprintf("%%%ds: %%s\n", logImageInfoLeftPartWidth)
)

func Debug() bool {
    return os.Getenv("WERF_CONTAINER_RUNTIME_DEBUG") == "1"
}

func LogImageName(ctx context.Context, name string) {
    logboek.Context(ctx).Default().LogFDetails(logImageInfoFormat, "name", name)
}

func LogImageInfo(ctx context.Context, img LegacyImageInterface, prevStageImageSize int64, withPlatform bool) {
    LogImageName(ctx, img.Name())

    logboek.Context(ctx).Default().LogFDetails(logImageInfoFormat, "id", stringid.TruncateID(img.GetStageDescription().Info.ID))
    logboek.Context(ctx).Default().LogFDetails(logImageInfoFormat, "created", img.GetStageDescription().Info.GetCreatedAt())

    if prevStageImageSize == 0 {
        logboek.Context(ctx).Default().LogFDetails(logImageInfoFormat, "size", byteCountBinary(img.GetStageDescription().Info.Size))
    } else {
        logboek.Context(ctx).Default().LogFDetails(logImageInfoFormat, "size", fmt.Sprintf("%s (+%s)", byteCountBinary(img.GetStageDescription().Info.Size), byteCountBinary(img.GetStageDescription().Info.Size-prevStageImageSize)))
    }

    if withPlatform {
        logboek.Context(ctx).Default().LogFDetails(logImageInfoFormat, "platform", img.GetTargetPlatform())
    }
}

func LogMultiplatformImageInfo(ctx context.Context, platforms []string) {
    logboek.Context(ctx).Default().LogFDetails(logImageInfoFormat, "platform", strings.Join(platforms, ","))
}

func byteCountBinary(b int64) string {
    const unit = 1024
    if b < unit {
        return fmt.Sprintf("%d B", b)
    }
    div, exp := int64(unit), 0
    for n := b / unit; n >= unit; n /= unit {
        div *= unit
        exp++
    }
    return fmt.Sprintf("%.1f %ciB", float64(b)/float64(div), "KMGTPE"[exp])
}