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step_wait_for_artifact.go
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step_wait_for_artifact.go
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package cmd
import (
"fmt"
"io"
"net/http"
"strings"
"time"
"github.com/jenkins-x/jx/pkg/jx/cmd/templates"
"github.com/jenkins-x/jx/pkg/log"
"github.com/jenkins-x/jx/pkg/util"
"github.com/spf13/cobra"
)
const (
optionRepo = "repo"
optionGroup = "group"
optionArtifact = "artifact"
optionVersion = "version"
optionPollTime = "poll-time"
DefaultMavenCentralRepo = "http://central.maven.org/maven2/"
)
// StepWaitForArtifactOptions contains the command line flags
type StepWaitForArtifactOptions struct {
StepOptions
ArtifactURL string
RepoURL string
GroupId string
ArtifactId string
Version string
Extension string
Timeout string
PollTime string
// calculated fields
TimeoutDuration time.Duration
PollDuration time.Duration
}
var (
StepWaitForArtifactLong = templates.LongDesc(`
Waits for the given artifact to be available in a maven style repository
`)
StepWaitForArtifactExample = templates.Examples(`
# wait for a
jx step gpg credentials
# generate the git credentials to a output file
jx step gpg credentials -o /tmp/mycreds
`)
)
func NewCmdStepWaitForArtifact(f Factory, out io.Writer, errOut io.Writer) *cobra.Command {
options := StepWaitForArtifactOptions{
StepOptions: StepOptions{
CommonOptions: CommonOptions{
Factory: f,
Out: out,
Err: errOut,
},
},
}
cmd := &cobra.Command{
Use: "wait for artifact",
Short: "Waits for the given artifact to be available in a maven style repository",
Long: StepWaitForArtifactLong,
Example: StepWaitForArtifactExample,
Run: func(cmd *cobra.Command, args []string) {
options.Cmd = cmd
options.Args = args
err := options.Run()
CheckErr(err)
},
}
cmd.Flags().StringVarP(&options.ArtifactURL, "artifact-url", "", "", "The full URL of the artifact to wait for. If not specified it is calculated from the repository URL, group, artifact and version")
cmd.Flags().StringVarP(&options.RepoURL, optionRepo, "r", DefaultMavenCentralRepo, "The URL of the maven style repository to query for the artifact")
cmd.Flags().StringVarP(&options.GroupId, optionGroup, "g", "", "The group ID of the artifact to search for")
cmd.Flags().StringVarP(&options.ArtifactId, optionArtifact, "a", "", "The artifact ID of the artifact to search for")
cmd.Flags().StringVarP(&options.Version, optionVersion, "v", "", "The version of the artifact to search for")
cmd.Flags().StringVarP(&options.Extension, "ext", "x", "pom", "The file extension to search for")
cmd.Flags().StringVarP(&options.Timeout, optionTimeout, "t", "1h", "The duration before we consider this operation failed")
cmd.Flags().StringVarP(&options.PollTime, optionPollTime, "", "10s", "The amount of time between polls for the artifact URL being present")
return cmd
}
func (o *StepWaitForArtifactOptions) getUrlStatusOK(u string) error {
client := http.Client{}
req, err := http.NewRequest(http.MethodGet, u, nil)
if err != nil {
return err
}
res, err := client.Do(req)
if err != nil {
return err
}
if res.StatusCode < 200 || res.StatusCode >= 300 {
return fmt.Errorf("Failed in request for %s as got status %d %s", u, res.StatusCode, res.Status)
}
return nil
}
func (o *StepWaitForArtifactOptions) Run() error {
var err error
if o.PollTime != "" {
o.PollDuration, err = time.ParseDuration(o.PollTime)
if err != nil {
return fmt.Errorf("Invalid duration format %s for option --%s: %s", o.PollTime, optionPollTime, err)
}
}
if o.Timeout != "" {
o.TimeoutDuration, err = time.ParseDuration(o.Timeout)
if err != nil {
return fmt.Errorf("Invalid duration format %s for option --%s: %s", o.Timeout, optionTimeout, err)
}
}
if o.ArtifactURL == "" {
// lets create it from the various parts
if o.RepoURL == "" {
return util.MissingOption(optionRepo)
}
group := o.GroupId
if group == "" {
return util.MissingOption(optionGroup)
}
group = strings.Replace(group, ".", "/", -1)
artifact := o.ArtifactId
if artifact == "" {
return util.MissingOption(optionArtifact)
}
version := o.Version
if version == "" {
return util.MissingOption(optionVersion)
}
o.ArtifactURL = util.UrlJoin(o.RepoURL, group, artifact, version, artifact+"-"+version+"."+o.Extension)
}
log.Infof("Waiting for artifact at %s\n", util.ColorInfo(o.ArtifactURL))
fn := func() error {
return o.getUrlStatusOK(o.ArtifactURL)
}
err = o.retryQuietlyUntilTimeout(o.TimeoutDuration, o.PollDuration, fn)
if err == nil {
log.Infof("Found artifact at %s\n", util.ColorInfo(o.ArtifactURL))
return nil
}
log.Warnf("Failed to find artifact at %s due to %s", o.ArtifactURL, err)
return err
}