act/container/docker_build.go
Dan Sosedoff 5330599c93 Capture errors from docker log output
- Refactored logDockerResponse function to remove extra if-else nesting
- logDockerResponse func now returns an error if error was detected from the log stream
- logDockerResponse will check for msg.ErrorDetail.Message and bail if there's an error
2019-03-01 21:16:43 -06:00

108 lines
3 KiB
Go

package container
import (
"io"
"os"
"path/filepath"
"github.com/docker/docker/api/types"
"github.com/docker/docker/builder/dockerignore"
"github.com/docker/docker/client"
"github.com/docker/docker/pkg/archive"
"github.com/docker/docker/pkg/fileutils"
"github.com/nektos/act/common"
log "github.com/sirupsen/logrus"
)
// NewDockerBuildExecutorInput the input for the NewDockerBuildExecutor function
type NewDockerBuildExecutorInput struct {
DockerExecutorInput
ContextDir string
ImageTag string
}
// NewDockerBuildExecutor function to create a run executor for the container
func NewDockerBuildExecutor(input NewDockerBuildExecutorInput) common.Executor {
return func() error {
input.Logger.Infof("docker build -t %s %s", input.ImageTag, input.ContextDir)
if input.Dryrun {
return nil
}
cli, err := client.NewClientWithOpts(client.FromEnv)
if err != nil {
return err
}
cli.NegotiateAPIVersion(input.Ctx)
input.Logger.Debugf("Building image from '%v'", input.ContextDir)
tags := []string{input.ImageTag}
options := types.ImageBuildOptions{
Tags: tags,
}
buildContext, err := createBuildContext(input.ContextDir, "Dockerfile")
if err != nil {
return err
}
defer buildContext.Close()
input.Logger.Debugf("Creating image from context dir '%s' with tag '%s'", input.ContextDir, input.ImageTag)
resp, err := cli.ImageBuild(input.Ctx, buildContext, options)
err = input.logDockerResponse(resp.Body, err != nil)
if err != nil {
return err
}
return nil
}
}
func createBuildContext(contextDir string, relDockerfile string) (io.ReadCloser, error) {
log.Debugf("Creating archive for build context dir '%s' with relative dockerfile '%s'", contextDir, relDockerfile)
// And canonicalize dockerfile name to a platform-independent one
relDockerfile = archive.CanonicalTarNameForPath(relDockerfile)
f, err := os.Open(filepath.Join(contextDir, ".dockerignore"))
if err != nil && !os.IsNotExist(err) {
return nil, err
}
defer f.Close()
var excludes []string
if err == nil {
excludes, err = dockerignore.ReadAll(f)
if err != nil {
return nil, err
}
}
// If .dockerignore mentions .dockerignore or the Dockerfile
// then make sure we send both files over to the daemon
// because Dockerfile is, obviously, needed no matter what, and
// .dockerignore is needed to know if either one needs to be
// removed. The daemon will remove them for us, if needed, after it
// parses the Dockerfile. Ignore errors here, as they will have been
// caught by validateContextDirectory above.
var includes = []string{"."}
keepThem1, _ := fileutils.Matches(".dockerignore", excludes)
keepThem2, _ := fileutils.Matches(relDockerfile, excludes)
if keepThem1 || keepThem2 {
includes = append(includes, ".dockerignore", relDockerfile)
}
compression := archive.Uncompressed
buildCtx, err := archive.TarWithOptions(contextDir, &archive.TarOptions{
Compression: compression,
ExcludePatterns: excludes,
IncludeFiles: includes,
})
if err != nil {
return nil, err
}
return buildCtx, nil
}