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package main
import (
"fmt"
"os"
"os/exec"
"strconv"
"github.com/pkg/errors"
"github.com/urfave/cli"
)
var (
buildFlags = []cli.Flag{
// The following flags are emulated from:
// src/github.com/projectatomic/buildah/cmd/bud.go
cli.StringFlag{
Name: "authfile",
Usage: "path of the authentication file. Default is ${XDG_RUNTIME_DIR}/containers/auth.json",
},
cli.StringSliceFlag{
Name: "build-arg",
Usage: "`argument=value` to supply to the builder",
},
cli.StringFlag{
Name: "cert-dir",
Value: "",
Usage: "use certificates at the specified path to access the registry",
},
cli.StringFlag{
Name: "creds",
Value: "",
Usage: "use `[username[:password]]` for accessing the registry",
},
cli.StringSliceFlag{
Name: "file, f",
Usage: "`pathname or URL` of a Dockerfile",
},
cli.StringFlag{
Name: "format",
Usage: "`format` of the built image's manifest and metadata",
},
cli.BoolFlag{
Name: "pull-always",
Usage: "pull the image, even if a version is present",
},
cli.BoolFlag{
Name: "quiet, q",
Usage: "refrain from announcing build instructions and image read/write progress",
},
cli.StringFlag{
Name: "runtime",
Usage: "`path` to an alternate runtime",
},
cli.StringSliceFlag{
Name: "runtime-flag",
Usage: "add global flags for the container runtime",
},
cli.StringFlag{
Name: "signature-policy",
Usage: "`pathname` of signature policy file (not usually used)",
},
cli.StringSliceFlag{
Name: "tag, t",
Usage: "`tag` to apply to the built image",
},
cli.BoolFlag{
Name: "tls-verify",
Usage: "require HTTPS and verify certificates when accessing the registry",
},
// The following flags are emulated from:
// src/github.com/projectatomic/buildah/cmd/common.go fromAndBudFlags
cli.StringSliceFlag{
Name: "add-host",
Usage: "add a custom host-to-IP mapping (host:ip) (default [])",
},
cli.StringFlag{
Name: "cgroup-parent",
Usage: "optional parent cgroup for the container",
},
cli.Uint64Flag{
Name: "cpu-period",
Usage: "limit the CPU CFS (Completely Fair Scheduler) period",
},
cli.Int64Flag{
Name: "cpu-quota",
Usage: "limit the CPU CFS (Completely Fair Scheduler) quota",
},
cli.Uint64Flag{
Name: "cpu-shares",
Usage: "CPU shares (relative weight)",
},
cli.StringFlag{
Name: "cpuset-cpus",
Usage: "CPUs in which to allow execution (0-3, 0,1)",
},
cli.StringFlag{
Name: "cpuset-mems",
Usage: "memory nodes (MEMs) in which to allow execution (0-3, 0,1). Only effective on NUMA systems.",
},
cli.StringFlag{
Name: "memory, m",
Usage: "memory limit (format: <number>[<unit>], where unit = b, k, m or g)",
},
cli.StringFlag{
Name: "memory-swap",
Usage: "swap limit equal to memory plus swap: '-1' to enable unlimited swap",
},
cli.StringSliceFlag{
Name: "security-opt",
Usage: "security Options (default [])",
},
cli.StringFlag{
Name: "shm-size",
Usage: "size of `/dev/shm`. The format is `<number><unit>`.",
Value: "65536k",
},
cli.StringSliceFlag{
Name: "ulimit",
Usage: "ulimit options (default [])",
},
cli.StringSliceFlag{
Name: "volume, v",
Usage: "bind mount a volume into the container (default [])",
},
}
buildDescription = "podman build launches the Buildah command to build an OCI Image. Buildah must be installed for this command to work."
buildCommand = cli.Command{
Name: "build",
Usage: "Build an image using instructions in a Dockerfile",
Description: buildDescription,
Flags: buildFlags,
Action: buildCmd,
ArgsUsage: "CONTEXT-DIRECTORY | URL",
}
)
func buildCmd(c *cli.Context) error {
budCmdArgs := []string{}
// Handle Global Options
logLevel := c.GlobalString("log-level")
if logLevel == "debug" {
budCmdArgs = append(budCmdArgs, "--debug")
}
if c.GlobalIsSet("root") {
budCmdArgs = append(budCmdArgs, "--root", c.GlobalString("root"))
}
if c.GlobalIsSet("runroot") {
budCmdArgs = append(budCmdArgs, "--runroot", c.GlobalString("runroot"))
}
if c.GlobalIsSet("storage-driver") {
budCmdArgs = append(budCmdArgs, "--storage-driver", c.GlobalString("storage-driver"))
}
for _, storageOpt := range c.GlobalStringSlice("storage-opt") {
budCmdArgs = append(budCmdArgs, "--storage-opt", storageOpt)
}
budCmdArgs = append(budCmdArgs, "bud")
// Buildah bud specific options
if c.IsSet("authfile") {
budCmdArgs = append(budCmdArgs, "--authfile", c.String("authfile"))
}
for _, buildArg := range c.StringSlice("build-arg") {
budCmdArgs = append(budCmdArgs, "--build-arg", buildArg)
}
if c.IsSet("cert-dir") {
budCmdArgs = append(budCmdArgs, "--cert-dir", c.String("cert-dir"))
}
if c.IsSet("creds") {
budCmdArgs = append(budCmdArgs, "--creds", c.String("creds"))
}
for _, fileName := range c.StringSlice("file") {
budCmdArgs = append(budCmdArgs, "--file", fileName)
}
if c.IsSet("format") {
budCmdArgs = append(budCmdArgs, "--format", c.String("format"))
}
if c.IsSet("pull-always") {
budCmdArgs = append(budCmdArgs, "--pull-always")
}
if c.IsSet("quiet") {
quietParam := "--quiet=" + strconv.FormatBool(c.Bool("quiet"))
budCmdArgs = append(budCmdArgs, quietParam)
}
if c.IsSet("runtime") {
budCmdArgs = append(budCmdArgs, "--runtime", c.String("runtime"))
}
for _, runtimeArg := range c.StringSlice("runtime-flag") {
budCmdArgs = append(budCmdArgs, "--runtime-flag", runtimeArg)
}
if c.IsSet("signature-policy") {
budCmdArgs = append(budCmdArgs, "--signature-policy", c.String("signature-policy"))
}
for _, tagArg := range c.StringSlice("tag") {
budCmdArgs = append(budCmdArgs, "--tag", tagArg)
}
if c.IsSet("tls-verify") {
tlsParam := "--tls-verify=" + strconv.FormatBool(c.Bool("tls-verify"))
budCmdArgs = append(budCmdArgs, tlsParam)
}
// Buildah bud and from options from cmd/buildah/common.go
for _, addHostArg := range c.StringSlice("add-host") {
budCmdArgs = append(budCmdArgs, "--add-host", addHostArg)
}
if c.IsSet("cgroup-parent") {
budCmdArgs = append(budCmdArgs, "--cgroup-parent", c.String("cgroup-parent"))
}
if c.IsSet("cpu-period") {
budCmdArgs = append(budCmdArgs, "--cpu-period", fmt.Sprintf("%v", c.Int64("cpu-period")))
}
if c.IsSet("cpu-quota") {
budCmdArgs = append(budCmdArgs, "--cpu-quota", fmt.Sprintf("%v", c.Uint64("cpu-quota")))
}
if c.IsSet("cpu-shares") {
budCmdArgs = append(budCmdArgs, "--cpu-shares", fmt.Sprintf("%v", c.Uint64("cpu-shares")))
}
if c.IsSet("cpuset-cpus") {
budCmdArgs = append(budCmdArgs, "--cpuset-cpus", c.String("cpuset-cpus"))
}
if c.IsSet("cpuset-mems") {
budCmdArgs = append(budCmdArgs, "--cpuset-mems", c.String("cpuset-mems"))
}
if c.IsSet("memory") {
budCmdArgs = append(budCmdArgs, "--memory", c.String("memory"))
}
if c.IsSet("memory-swap") {
budCmdArgs = append(budCmdArgs, "--memory-swap", c.String("memory-swap"))
}
for _, securityOptArg := range c.StringSlice("security-opt") {
budCmdArgs = append(budCmdArgs, "--security-opt", securityOptArg)
}
if c.IsSet("shm-size") {
budCmdArgs = append(budCmdArgs, "--shm-size", c.String("shm-size"))
}
for _, ulimitArg := range c.StringSlice("ulimit") {
budCmdArgs = append(budCmdArgs, "--ulimit", ulimitArg)
}
for _, volumeArg := range c.StringSlice("volume") {
budCmdArgs = append(budCmdArgs, "--volume", volumeArg)
}
if len(c.Args()) > 0 {
budCmdArgs = append(budCmdArgs, c.Args()...)
}
buildah := "buildah"
if _, err := exec.LookPath(buildah); err != nil {
return errors.Wrapf(err, "buildah not found in PATH")
}
if _, err := exec.Command(buildah).Output(); err != nil {
return errors.Wrapf(err, "buildah is not operational on this server")
}
cmd := exec.Command(buildah, budCmdArgs...)
cmd.Stdin = os.Stdin
cmd.Stdout = os.Stdout
cmd.Stderr = os.Stderr
if err := cmd.Run(); err != nil {
return errors.Wrapf(err, "error running the buildah build-using-dockerfile (bud) command")
}
return nil
}
|
